net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2022 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 static int validate_he_capa(const struct nlattr *attr,
 289                             struct netlink_ext_ack *extack)
 290 {
 291         if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
 292                 return -EINVAL;
 293
 294         return 0;
 295 }
 296
 297 /* policy for the attributes */
 298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 299
 300 static const struct nla_policy
 301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 302         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 303         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 304                                         .len = U8_MAX },
 305         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 306                                              .len = U8_MAX },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 312         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 313         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 314                 NLA_POLICY_MAX(NLA_U8, 15),
 315         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 316         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 317                 NLA_POLICY_MAX(NLA_U8, 15),
 318         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 319                 NLA_POLICY_MAX(NLA_U8, 31),
 320         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 321         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 322         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 323         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 324         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 325         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 326 };
 327
 328 static const struct nla_policy
 329 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 330         [NL80211_PMSR_TYPE_FTM] =
 331                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 336         [NL80211_PMSR_REQ_ATTR_DATA] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 338         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 344         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 345         [NL80211_PMSR_PEER_ATTR_REQ] =
 346                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 347         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 348 };
 349
 350 static const struct nla_policy
 351 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 352         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 353         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_PEERS] =
 357                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 358 };
 359
 360 static const struct nla_policy
 361 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 362         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 363                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 364         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 365                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 366         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 367                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 368         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 369                 NLA_POLICY_EXACT_LEN(8),
 370         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 371                 NLA_POLICY_EXACT_LEN(8),
 372         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 373 };
 374
 375 static const struct nla_policy
 376 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 377         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 378         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 379         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 380 };
 381
 382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 383         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 384                                     .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 386                                 .len = NL80211_MAX_SUPP_HT_RATES },
 387         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 388         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 389         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 390         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 391                                                    NL80211_RATE_INFO_HE_GI_0_8,
 392                                                    NL80211_RATE_INFO_HE_GI_3_2),
 393         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 394                                                    NL80211_RATE_INFO_HE_1XLTF,
 395                                                    NL80211_RATE_INFO_HE_4XLTF),
 396 };
 397
 398 static const struct nla_policy
 399 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 400         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 401         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 403         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 404         [NL80211_TID_CONFIG_ATTR_NOACK] =
 405                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 406         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 409                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 410         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 411                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 412         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 413                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 414         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 415                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 416         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 417                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 418 };
 419
 420 static const struct nla_policy
 421 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 422         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 425                         NLA_POLICY_RANGE(NLA_BINARY,
 426                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 427                                          IEEE80211_MAX_DATA_LEN),
 428 };
 429
 430 static const struct nla_policy
 431 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 432         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 434                                                        .len = IEEE80211_MAX_DATA_LEN }
 435 };
 436
 437 static const struct nla_policy
 438 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 439         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 440         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 441 };
 442
 443 static const struct nla_policy
 444 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 445         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 446         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 447 };
 448
 449 static const struct nla_policy
 450 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 451         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 453                                                 NLA_POLICY_MIN(NLA_U8, 1),
 454         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 455         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 456         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 457 };
 458
 459 static const struct nla_policy
 460 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 461         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 462         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 463 };
 464
 465 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 466         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 467         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 468         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 469                                       .len = 20-1 },
 470         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 471
 472         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 473         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 475                                                 NL80211_EDMG_CHANNELS_MIN,
 476                                                 NL80211_EDMG_CHANNELS_MAX),
 477         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 478                                                 NL80211_EDMG_BW_CONFIG_MIN,
 479                                                 NL80211_EDMG_BW_CONFIG_MAX),
 480
 481         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 482         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 483         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 484         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 485
 486         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 487         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 488         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 489         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 490         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 491         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 492
 493         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 494         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 495         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 496
 497         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 498         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 499
 500         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 501         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 502                                     .len = WLAN_MAX_KEY_LEN },
 503         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 504         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 505         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 507         [NL80211_ATTR_KEY_TYPE] =
 508                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 509
 510         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 511         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 512         [NL80211_ATTR_BEACON_HEAD] =
 513                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 514                                        IEEE80211_MAX_DATA_LEN),
 515         [NL80211_ATTR_BEACON_TAIL] =
 516                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 517                                        IEEE80211_MAX_DATA_LEN),
 518         [NL80211_ATTR_STA_AID] =
 519                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 520         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 521         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 522         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 523                                                .len = NL80211_MAX_SUPP_RATES },
 524         [NL80211_ATTR_STA_PLINK_ACTION] =
 525                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 526         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 527                 NLA_POLICY_RANGE(NLA_U8,
 528                                  NL80211_TX_POWER_AUTOMATIC,
 529                                  NL80211_TX_POWER_FIXED),
 530         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 531         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 532         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 533         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 534                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 535         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 536
 537         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 538         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 539         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 540
 541         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 542         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 543         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 544         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 545                                            .len = NL80211_MAX_SUPP_RATES },
 546         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 547
 548         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 549         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 550
 551         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 552
 553         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 554         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 555                                                    validate_ie_attr,
 556                                                    IEEE80211_MAX_DATA_LEN),
 557         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 558         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 559
 560         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 561                                 .len = IEEE80211_MAX_SSID_LEN },
 562         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 563         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 564         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 565         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 567                                                   NL80211_MFP_NO,
 568                                                   NL80211_MFP_OPTIONAL),
 569         [NL80211_ATTR_STA_FLAGS2] =
 570                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 571         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 573         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 577         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 578         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 579         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 580         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 581         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 582         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 583         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 584         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 585         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 586                                  .len = IEEE80211_MAX_DATA_LEN },
 587         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 588         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 589                                                    NL80211_PS_DISABLED,
 590                                                    NL80211_PS_ENABLED),
 591         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 592         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 593         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 594         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 595         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 596         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 597         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 598         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 599         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 600         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 601         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 602         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 603         [NL80211_ATTR_STA_PLINK_STATE] =
 604                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 605         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 606         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_MESH_PEER_AID] =
 608                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 609         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 610         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 611         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 612         [NL80211_ATTR_HIDDEN_SSID] =
 613                 NLA_POLICY_RANGE(NLA_U32,
 614                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 615                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 616         [NL80211_ATTR_IE_PROBE_RESP] =
 617                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 618                                        IEEE80211_MAX_DATA_LEN),
 619         [NL80211_ATTR_IE_ASSOC_RESP] =
 620                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 621                                        IEEE80211_MAX_DATA_LEN),
 622         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 623         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 624         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 625         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 626         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 627         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 628         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 629         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 630         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 633         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 634                                       .len = IEEE80211_MAX_DATA_LEN },
 635         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 636         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 638                 .len = NL80211_HT_CAPABILITY_LEN
 639         },
 640         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 641         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 642         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 643         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 644         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 645
 646         /* need to include at least Auth Transaction and Status Code */
 647         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 648
 649         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 650         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 651         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 652         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 653         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 654                 NLA_POLICY_RANGE(NLA_U32,
 655                                  NL80211_MESH_POWER_UNKNOWN + 1,
 656                                  NL80211_MESH_POWER_MAX),
 657         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 658         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 659         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 660         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 661         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 662         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 663         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 664                 .len = NL80211_VHT_CAPABILITY_LEN,
 665         },
 666         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 667         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 668                                   .len = IEEE80211_MAX_DATA_LEN },
 669         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 670         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 671                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 672         [NL80211_ATTR_PEER_AID] =
 673                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 674         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 675         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 676         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 677         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 678         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 679         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 680         /*
 681          * The value of the Length field of the Supported Operating
 682          * Classes element is between 2 and 253.
 683          */
 684         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 685                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 686         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 687         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 688         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 689         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 690         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 691         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 692                                                   IEEE80211_QOS_MAP_LEN_MIN,
 693                                                   IEEE80211_QOS_MAP_LEN_MAX),
 694         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 695         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 696         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 697         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 698         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 699         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 700         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 701         [NL80211_ATTR_USER_PRIO] =
 702                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 703         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 704         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 705         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 706         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 707         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 708         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 709         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 710         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 711         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 712         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 713         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 714                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 715         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 716                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 717         },
 718         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 719         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 720         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 721         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 722         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 723                                     .len = FILS_MAX_KEK_LEN },
 724         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 725         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 726         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 727         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 728         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 729                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 730         },
 731         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 732         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 733                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 734         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 735                                           .len = FILS_ERP_MAX_REALM_LEN },
 736         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 737         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 738                                         .len = FILS_ERP_MAX_RRK_LEN },
 739         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 740         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 741         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 742         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 743         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 744
 745         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 746         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 747         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 748         [NL80211_ATTR_HE_CAPABILITY] =
 749                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 750                                        NL80211_HE_MAX_CAPABILITY_LEN),
 751         [NL80211_ATTR_FTM_RESPONDER] =
 752                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 753         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 754         [NL80211_ATTR_PEER_MEASUREMENTS] =
 755                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 756         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 757         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 758                                         .len = SAE_PASSWORD_MAX_LEN },
 759         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 760         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 761         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 762         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 763         [NL80211_ATTR_TID_CONFIG] =
 764                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 765         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 767         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 768         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 769         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 770         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 771         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 772                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 773         [NL80211_ATTR_FILS_DISCOVERY] =
 774                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 775         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 776                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 777         [NL80211_ATTR_S1G_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 779         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 780                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 781         [NL80211_ATTR_SAE_PWE] =
 782                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 783                                  NL80211_SAE_PWE_BOTH),
 784         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 785         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 786         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 787         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 788         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 789         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 790         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 791         [NL80211_ATTR_MBSSID_CONFIG] =
 792                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 793         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 794         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 795         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 796         [NL80211_ATTR_EHT_CAPABILITY] =
 797                 NLA_POLICY_RANGE(NLA_BINARY,
 798                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 799                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 800         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_MLO_LINKS] =
 802                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 803         [NL80211_ATTR_MLO_LINK_ID] =
 804                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 805         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 806         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 808         [NL80211_ATTR_PUNCT_BITMAP] = NLA_POLICY_RANGE(NLA_U8, 0, 0xffff),
 809 };
 810
 811 /* policy for the key attributes */
 812 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 813         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 814         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 815         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 816         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 817         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 818         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 819         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 820         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 821         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 822 };
 823
 824 /* policy for the key default flags */
 825 static const struct nla_policy
 826 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 827         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 828         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 829 };
 830
 831 #ifdef CONFIG_PM
 832 /* policy for WoWLAN attributes */
 833 static const struct nla_policy
 834 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 835         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 836         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 837         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 838         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 839         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 840         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 841         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 842         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 843         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 844         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 845 };
 846
 847 static const struct nla_policy
 848 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 849         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 850         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 851         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 852         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 853         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 854         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 855         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 856                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 857         },
 858         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 859                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 860         },
 861         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 862         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 863         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 864 };
 865 #endif /* CONFIG_PM */
 866
 867 /* policy for coalesce rule attributes */
 868 static const struct nla_policy
 869 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 870         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 871         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 872                 NLA_POLICY_RANGE(NLA_U32,
 873                                  NL80211_COALESCE_CONDITION_MATCH,
 874                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 875         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 876 };
 877
 878 /* policy for GTK rekey offload attributes */
 879 static const struct nla_policy
 880 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 881         [NL80211_REKEY_DATA_KEK] = {
 882                 .type = NLA_BINARY,
 883                 .len = NL80211_KEK_EXT_LEN
 884         },
 885         [NL80211_REKEY_DATA_KCK] = {
 886                 .type = NLA_BINARY,
 887                 .len = NL80211_KCK_EXT_LEN_32
 888         },
 889         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 890         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 891 };
 892
 893 static const struct nla_policy
 894 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 895         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 896         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 897         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 898         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 899         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 900 };
 901
 902 static const struct nla_policy
 903 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 904         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 905                                                  .len = IEEE80211_MAX_SSID_LEN },
 906         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 907         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 908         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 909                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 910 };
 911
 912 static const struct nla_policy
 913 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 914         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 915         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 916 };
 917
 918 static const struct nla_policy
 919 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 920         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 921         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 922         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 923                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 924         },
 925 };
 926
 927 /* policy for NAN function attributes */
 928 static const struct nla_policy
 929 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 930         [NL80211_NAN_FUNC_TYPE] =
 931                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 932         [NL80211_NAN_FUNC_SERVICE_ID] = {
 933                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 934         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 935         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 936         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 937         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 938         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 939         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 940         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 941         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 942         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 943                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 944         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 945         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 946         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 947         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 948         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 949 };
 950
 951 /* policy for Service Response Filter attributes */
 952 static const struct nla_policy
 953 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 954         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 955         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 956                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 957         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 958         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 959 };
 960
 961 /* policy for packet pattern attributes */
 962 static const struct nla_policy
 963 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 964         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 965         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 966         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 967 };
 968
 969 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 970                                      struct cfg80211_registered_device **rdev,
 971                                      struct wireless_dev **wdev,
 972                                      struct nlattr **attrbuf)
 973 {
 974         int err;
 975
 976         if (!cb->args[0]) {
 977                 struct nlattr **attrbuf_free = NULL;
 978
 979                 if (!attrbuf) {
 980                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 981                                           GFP_KERNEL);
 982                         if (!attrbuf)
 983                                 return -ENOMEM;
 984                         attrbuf_free = attrbuf;
 985                 }
 986
 987                 err = nlmsg_parse_deprecated(cb->nlh,
 988                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 989                                              attrbuf, nl80211_fam.maxattr,
 990                                              nl80211_policy, NULL);
 991                 if (err) {
 992                         kfree(attrbuf_free);
 993                         return err;
 994                 }
 995
 996                 rtnl_lock();
 997                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 998                                                    attrbuf);
 999                 kfree(attrbuf_free);
1000                 if (IS_ERR(*wdev)) {
1001                         rtnl_unlock();
1002                         return PTR_ERR(*wdev);
1003                 }
1004                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1005                 mutex_lock(&(*rdev)->wiphy.mtx);
1006                 rtnl_unlock();
1007                 /* 0 is the first index - add 1 to parse only once */
1008                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1009                 cb->args[1] = (*wdev)->identifier;
1010         } else {
1011                 /* subtract the 1 again here */
1012                 struct wiphy *wiphy;
1013                 struct wireless_dev *tmp;
1014
1015                 rtnl_lock();
1016                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1017                 if (!wiphy) {
1018                         rtnl_unlock();
1019                         return -ENODEV;
1020                 }
1021                 *rdev = wiphy_to_rdev(wiphy);
1022                 *wdev = NULL;
1023
1024                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1025                         if (tmp->identifier == cb->args[1]) {
1026                                 *wdev = tmp;
1027                                 break;
1028                         }
1029                 }
1030
1031                 if (!*wdev) {
1032                         rtnl_unlock();
1033                         return -ENODEV;
1034                 }
1035                 mutex_lock(&(*rdev)->wiphy.mtx);
1036                 rtnl_unlock();
1037         }
1038
1039         return 0;
1040 }
1041
1042 /* message building helper */
1043 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1044                      int flags, u8 cmd)
1045 {
1046         /* since there is no private header just add the generic one */
1047         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1048 }
1049
1050 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1051                                      const struct ieee80211_reg_rule *rule)
1052 {
1053         int j;
1054         struct nlattr *nl_wmm_rules =
1055                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1056
1057         if (!nl_wmm_rules)
1058                 goto nla_put_failure;
1059
1060         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1061                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1062
1063                 if (!nl_wmm_rule)
1064                         goto nla_put_failure;
1065
1066                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1067                                 rule->wmm_rule.client[j].cw_min) ||
1068                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1069                                 rule->wmm_rule.client[j].cw_max) ||
1070                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1071                                rule->wmm_rule.client[j].aifsn) ||
1072                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1073                                 rule->wmm_rule.client[j].cot))
1074                         goto nla_put_failure;
1075
1076                 nla_nest_end(msg, nl_wmm_rule);
1077         }
1078         nla_nest_end(msg, nl_wmm_rules);
1079
1080         return 0;
1081
1082 nla_put_failure:
1083         return -ENOBUFS;
1084 }
1085
1086 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1087                                    struct ieee80211_channel *chan,
1088                                    bool large)
1089 {
1090         /* Some channels must be completely excluded from the
1091          * list to protect old user-space tools from breaking
1092          */
1093         if (!large && chan->flags &
1094             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1095                 return 0;
1096         if (!large && chan->freq_offset)
1097                 return 0;
1098
1099         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1100                         chan->center_freq))
1101                 goto nla_put_failure;
1102
1103         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1104                 goto nla_put_failure;
1105
1106         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1107             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1108                 goto nla_put_failure;
1109         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1110                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1111                         goto nla_put_failure;
1112                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1113                         goto nla_put_failure;
1114         }
1115         if (chan->flags & IEEE80211_CHAN_RADAR) {
1116                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1117                         goto nla_put_failure;
1118                 if (large) {
1119                         u32 time;
1120
1121                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1122
1123                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1124                                         chan->dfs_state))
1125                                 goto nla_put_failure;
1126                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1127                                         time))
1128                                 goto nla_put_failure;
1129                         if (nla_put_u32(msg,
1130                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1131                                         chan->dfs_cac_ms))
1132                                 goto nla_put_failure;
1133                 }
1134         }
1135
1136         if (large) {
1137                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1138                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1139                         goto nla_put_failure;
1140                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1141                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1142                         goto nla_put_failure;
1143                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1144                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1145                         goto nla_put_failure;
1146                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1147                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1148                         goto nla_put_failure;
1149                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1150                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1151                         goto nla_put_failure;
1152                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1153                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1154                         goto nla_put_failure;
1155                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1156                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1157                         goto nla_put_failure;
1158                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1159                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1160                         goto nla_put_failure;
1161                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1162                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1163                         goto nla_put_failure;
1164                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1165                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1166                         goto nla_put_failure;
1167                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1168                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1169                         goto nla_put_failure;
1170                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1171                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1172                         goto nla_put_failure;
1173                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1174                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1175                         goto nla_put_failure;
1176                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1177                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1178                         goto nla_put_failure;
1179                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1180                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1181                         goto nla_put_failure;
1182                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1183                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1184                         goto nla_put_failure;
1185         }
1186
1187         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1188                         DBM_TO_MBM(chan->max_power)))
1189                 goto nla_put_failure;
1190
1191         if (large) {
1192                 const struct ieee80211_reg_rule *rule =
1193                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1194
1195                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1196                         if (nl80211_msg_put_wmm_rules(msg, rule))
1197                                 goto nla_put_failure;
1198                 }
1199         }
1200
1201         return 0;
1202
1203  nla_put_failure:
1204         return -ENOBUFS;
1205 }
1206
1207 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1208                                   struct cfg80211_txq_stats *txqstats,
1209                                   int attrtype)
1210 {
1211         struct nlattr *txqattr;
1212
1213 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1214         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1215             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1216                 return false;                                             \
1217         } while (0)
1218
1219         txqattr = nla_nest_start_noflag(msg, attrtype);
1220         if (!txqattr)
1221                 return false;
1222
1223         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1224         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1225         PUT_TXQVAL_U32(FLOWS, flows);
1226         PUT_TXQVAL_U32(DROPS, drops);
1227         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1228         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1229         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1230         PUT_TXQVAL_U32(COLLISIONS, collisions);
1231         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1232         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1233         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1234         nla_nest_end(msg, txqattr);
1235
1236 #undef PUT_TXQVAL_U32
1237         return true;
1238 }
1239
1240 /* netlink command implementations */
1241
1242 /**
1243  * nl80211_link_id - return link ID
1244  * @attrs: attributes to look at
1245  *
1246  * Returns: the link ID or 0 if not given
1247  *
1248  * Note this function doesn't do any validation of the link
1249  * ID validity wrt. links that were actually added, so it must
1250  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1251  * or if additional validation is done.
1252  */
1253 static unsigned int nl80211_link_id(struct nlattr **attrs)
1254 {
1255         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1256
1257         if (!linkid)
1258                 return 0;
1259
1260         return nla_get_u8(linkid);
1261 }
1262
1263 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1264 {
1265         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1266
1267         if (!linkid)
1268                 return -1;
1269
1270         return nla_get_u8(linkid);
1271 }
1272
1273 struct key_parse {
1274         struct key_params p;
1275         int idx;
1276         int type;
1277         bool def, defmgmt, defbeacon;
1278         bool def_uni, def_multi;
1279 };
1280
1281 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1282                                  struct key_parse *k)
1283 {
1284         struct nlattr *tb[NL80211_KEY_MAX + 1];
1285         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1286                                               nl80211_key_policy,
1287                                               info->extack);
1288         if (err)
1289                 return err;
1290
1291         k->def = !!tb[NL80211_KEY_DEFAULT];
1292         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1293         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1294
1295         if (k->def) {
1296                 k->def_uni = true;
1297                 k->def_multi = true;
1298         }
1299         if (k->defmgmt || k->defbeacon)
1300                 k->def_multi = true;
1301
1302         if (tb[NL80211_KEY_IDX])
1303                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1304
1305         if (tb[NL80211_KEY_DATA]) {
1306                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1307                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1308         }
1309
1310         if (tb[NL80211_KEY_SEQ]) {
1311                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1312                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1313         }
1314
1315         if (tb[NL80211_KEY_CIPHER])
1316                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1317
1318         if (tb[NL80211_KEY_TYPE])
1319                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1320
1321         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1322                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1323
1324                 err = nla_parse_nested_deprecated(kdt,
1325                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1326                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1327                                                   nl80211_key_default_policy,
1328                                                   info->extack);
1329                 if (err)
1330                         return err;
1331
1332                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1333                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1334         }
1335
1336         if (tb[NL80211_KEY_MODE])
1337                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1338
1339         return 0;
1340 }
1341
1342 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1343 {
1344         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1345                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1346                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1347         }
1348
1349         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1350                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1351                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1352         }
1353
1354         if (info->attrs[NL80211_ATTR_KEY_IDX])
1355                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1356
1357         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1358                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1359
1360         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1361         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1362
1363         if (k->def) {
1364                 k->def_uni = true;
1365                 k->def_multi = true;
1366         }
1367         if (k->defmgmt)
1368                 k->def_multi = true;
1369
1370         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1371                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1372
1373         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1374                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1375                 int err = nla_parse_nested_deprecated(kdt,
1376                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1377                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1378                                                       nl80211_key_default_policy,
1379                                                       info->extack);
1380                 if (err)
1381                         return err;
1382
1383                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1384                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1385         }
1386
1387         return 0;
1388 }
1389
1390 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1391 {
1392         int err;
1393
1394         memset(k, 0, sizeof(*k));
1395         k->idx = -1;
1396         k->type = -1;
1397
1398         if (info->attrs[NL80211_ATTR_KEY])
1399                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1400         else
1401                 err = nl80211_parse_key_old(info, k);
1402
1403         if (err)
1404                 return err;
1405
1406         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1407             (k->defbeacon ? 1 : 0) > 1) {
1408                 GENL_SET_ERR_MSG(info,
1409                                  "key with multiple default flags is invalid");
1410                 return -EINVAL;
1411         }
1412
1413         if (k->defmgmt || k->defbeacon) {
1414                 if (k->def_uni || !k->def_multi) {
1415                         GENL_SET_ERR_MSG(info,
1416                                          "defmgmt/defbeacon key must be mcast");
1417                         return -EINVAL;
1418                 }
1419         }
1420
1421         if (k->idx != -1) {
1422                 if (k->defmgmt) {
1423                         if (k->idx < 4 || k->idx > 5) {
1424                                 GENL_SET_ERR_MSG(info,
1425                                                  "defmgmt key idx not 4 or 5");
1426                                 return -EINVAL;
1427                         }
1428                 } else if (k->defbeacon) {
1429                         if (k->idx < 6 || k->idx > 7) {
1430                                 GENL_SET_ERR_MSG(info,
1431                                                  "defbeacon key idx not 6 or 7");
1432                                 return -EINVAL;
1433                         }
1434                 } else if (k->def) {
1435                         if (k->idx < 0 || k->idx > 3) {
1436                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1437                                 return -EINVAL;
1438                         }
1439                 } else {
1440                         if (k->idx < 0 || k->idx > 7) {
1441                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1442                                 return -EINVAL;
1443                         }
1444                 }
1445         }
1446
1447         return 0;
1448 }
1449
1450 static struct cfg80211_cached_keys *
1451 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1452                        struct genl_info *info, bool *no_ht)
1453 {
1454         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1455         struct key_parse parse;
1456         struct nlattr *key;
1457         struct cfg80211_cached_keys *result;
1458         int rem, err, def = 0;
1459         bool have_key = false;
1460
1461         nla_for_each_nested(key, keys, rem) {
1462                 have_key = true;
1463                 break;
1464         }
1465
1466         if (!have_key)
1467                 return NULL;
1468
1469         result = kzalloc(sizeof(*result), GFP_KERNEL);
1470         if (!result)
1471                 return ERR_PTR(-ENOMEM);
1472
1473         result->def = -1;
1474
1475         nla_for_each_nested(key, keys, rem) {
1476                 memset(&parse, 0, sizeof(parse));
1477                 parse.idx = -1;
1478
1479                 err = nl80211_parse_key_new(info, key, &parse);
1480                 if (err)
1481                         goto error;
1482                 err = -EINVAL;
1483                 if (!parse.p.key)
1484                         goto error;
1485                 if (parse.idx < 0 || parse.idx > 3) {
1486                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1487                         goto error;
1488                 }
1489                 if (parse.def) {
1490                         if (def) {
1491                                 GENL_SET_ERR_MSG(info,
1492                                                  "only one key can be default");
1493                                 goto error;
1494                         }
1495                         def = 1;
1496                         result->def = parse.idx;
1497                         if (!parse.def_uni || !parse.def_multi)
1498                                 goto error;
1499                 } else if (parse.defmgmt)
1500                         goto error;
1501                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1502                                                      parse.idx, false, NULL);
1503                 if (err)
1504                         goto error;
1505                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1506                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1507                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1508                         err = -EINVAL;
1509                         goto error;
1510                 }
1511                 result->params[parse.idx].cipher = parse.p.cipher;
1512                 result->params[parse.idx].key_len = parse.p.key_len;
1513                 result->params[parse.idx].key = result->data[parse.idx];
1514                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1515
1516                 /* must be WEP key if we got here */
1517                 if (no_ht)
1518                         *no_ht = true;
1519         }
1520
1521         if (result->def < 0) {
1522                 err = -EINVAL;
1523                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1524                 goto error;
1525         }
1526
1527         return result;
1528  error:
1529         kfree(result);
1530         return ERR_PTR(err);
1531 }
1532
1533 static int nl80211_key_allowed(struct wireless_dev *wdev)
1534 {
1535         ASSERT_WDEV_LOCK(wdev);
1536
1537         switch (wdev->iftype) {
1538         case NL80211_IFTYPE_AP:
1539         case NL80211_IFTYPE_AP_VLAN:
1540         case NL80211_IFTYPE_P2P_GO:
1541         case NL80211_IFTYPE_MESH_POINT:
1542                 break;
1543         case NL80211_IFTYPE_ADHOC:
1544                 if (wdev->u.ibss.current_bss)
1545                         return 0;
1546                 return -ENOLINK;
1547         case NL80211_IFTYPE_STATION:
1548         case NL80211_IFTYPE_P2P_CLIENT:
1549                 if (wdev->connected)
1550                         return 0;
1551                 return -ENOLINK;
1552         case NL80211_IFTYPE_NAN:
1553                 if (wiphy_ext_feature_isset(wdev->wiphy,
1554                                             NL80211_EXT_FEATURE_SECURE_NAN))
1555                         return 0;
1556                 return -EINVAL;
1557         case NL80211_IFTYPE_UNSPECIFIED:
1558         case NL80211_IFTYPE_OCB:
1559         case NL80211_IFTYPE_MONITOR:
1560         case NL80211_IFTYPE_P2P_DEVICE:
1561         case NL80211_IFTYPE_WDS:
1562         case NUM_NL80211_IFTYPES:
1563                 return -EINVAL;
1564         }
1565
1566         return 0;
1567 }
1568
1569 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1570                                                         u32 freq)
1571 {
1572         struct ieee80211_channel *chan;
1573
1574         chan = ieee80211_get_channel_khz(wiphy, freq);
1575         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1576                 return NULL;
1577         return chan;
1578 }
1579
1580 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1581 {
1582         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1583         int i;
1584
1585         if (!nl_modes)
1586                 goto nla_put_failure;
1587
1588         i = 0;
1589         while (ifmodes) {
1590                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1591                         goto nla_put_failure;
1592                 ifmodes >>= 1;
1593                 i++;
1594         }
1595
1596         nla_nest_end(msg, nl_modes);
1597         return 0;
1598
1599 nla_put_failure:
1600         return -ENOBUFS;
1601 }
1602
1603 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1604                                           struct sk_buff *msg,
1605                                           bool large)
1606 {
1607         struct nlattr *nl_combis;
1608         int i, j;
1609
1610         nl_combis = nla_nest_start_noflag(msg,
1611                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1612         if (!nl_combis)
1613                 goto nla_put_failure;
1614
1615         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1616                 const struct ieee80211_iface_combination *c;
1617                 struct nlattr *nl_combi, *nl_limits;
1618
1619                 c = &wiphy->iface_combinations[i];
1620
1621                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1622                 if (!nl_combi)
1623                         goto nla_put_failure;
1624
1625                 nl_limits = nla_nest_start_noflag(msg,
1626                                                   NL80211_IFACE_COMB_LIMITS);
1627                 if (!nl_limits)
1628                         goto nla_put_failure;
1629
1630                 for (j = 0; j < c->n_limits; j++) {
1631                         struct nlattr *nl_limit;
1632
1633                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1634                         if (!nl_limit)
1635                                 goto nla_put_failure;
1636                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1637                                         c->limits[j].max))
1638                                 goto nla_put_failure;
1639                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1640                                                 c->limits[j].types))
1641                                 goto nla_put_failure;
1642                         nla_nest_end(msg, nl_limit);
1643                 }
1644
1645                 nla_nest_end(msg, nl_limits);
1646
1647                 if (c->beacon_int_infra_match &&
1648                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1649                         goto nla_put_failure;
1650                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1651                                 c->num_different_channels) ||
1652                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1653                                 c->max_interfaces))
1654                         goto nla_put_failure;
1655                 if (large &&
1656                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1657                                 c->radar_detect_widths) ||
1658                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1659                                 c->radar_detect_regions)))
1660                         goto nla_put_failure;
1661                 if (c->beacon_int_min_gcd &&
1662                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1663                                 c->beacon_int_min_gcd))
1664                         goto nla_put_failure;
1665
1666                 nla_nest_end(msg, nl_combi);
1667         }
1668
1669         nla_nest_end(msg, nl_combis);
1670
1671         return 0;
1672 nla_put_failure:
1673         return -ENOBUFS;
1674 }
1675
1676 #ifdef CONFIG_PM
1677 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1678                                         struct sk_buff *msg)
1679 {
1680         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1681         struct nlattr *nl_tcp;
1682
1683         if (!tcp)
1684                 return 0;
1685
1686         nl_tcp = nla_nest_start_noflag(msg,
1687                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1688         if (!nl_tcp)
1689                 return -ENOBUFS;
1690
1691         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1692                         tcp->data_payload_max))
1693                 return -ENOBUFS;
1694
1695         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1696                         tcp->data_payload_max))
1697                 return -ENOBUFS;
1698
1699         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1700                 return -ENOBUFS;
1701
1702         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1703                                 sizeof(*tcp->tok), tcp->tok))
1704                 return -ENOBUFS;
1705
1706         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1707                         tcp->data_interval_max))
1708                 return -ENOBUFS;
1709
1710         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1711                         tcp->wake_payload_max))
1712                 return -ENOBUFS;
1713
1714         nla_nest_end(msg, nl_tcp);
1715         return 0;
1716 }
1717
1718 static int nl80211_send_wowlan(struct sk_buff *msg,
1719                                struct cfg80211_registered_device *rdev,
1720                                bool large)
1721 {
1722         struct nlattr *nl_wowlan;
1723
1724         if (!rdev->wiphy.wowlan)
1725                 return 0;
1726
1727         nl_wowlan = nla_nest_start_noflag(msg,
1728                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1729         if (!nl_wowlan)
1730                 return -ENOBUFS;
1731
1732         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1733              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1734             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1735              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1736             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1737              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1738             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1739              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1740             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1741              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1742             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1743              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1744             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1745              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1746             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1747              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1748                 return -ENOBUFS;
1749
1750         if (rdev->wiphy.wowlan->n_patterns) {
1751                 struct nl80211_pattern_support pat = {
1752                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1753                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1754                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1755                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1756                 };
1757
1758                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1759                             sizeof(pat), &pat))
1760                         return -ENOBUFS;
1761         }
1762
1763         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1764             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1765                         rdev->wiphy.wowlan->max_nd_match_sets))
1766                 return -ENOBUFS;
1767
1768         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1769                 return -ENOBUFS;
1770
1771         nla_nest_end(msg, nl_wowlan);
1772
1773         return 0;
1774 }
1775 #endif
1776
1777 static int nl80211_send_coalesce(struct sk_buff *msg,
1778                                  struct cfg80211_registered_device *rdev)
1779 {
1780         struct nl80211_coalesce_rule_support rule;
1781
1782         if (!rdev->wiphy.coalesce)
1783                 return 0;
1784
1785         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1786         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1787         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1788         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1789         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1790         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1791
1792         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1793                 return -ENOBUFS;
1794
1795         return 0;
1796 }
1797
1798 static int
1799 nl80211_send_iftype_data(struct sk_buff *msg,
1800                          const struct ieee80211_supported_band *sband,
1801                          const struct ieee80211_sband_iftype_data *iftdata)
1802 {
1803         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1804         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1805
1806         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1807                                 iftdata->types_mask))
1808                 return -ENOBUFS;
1809
1810         if (he_cap->has_he) {
1811                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1812                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1813                             he_cap->he_cap_elem.mac_cap_info) ||
1814                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1815                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1816                             he_cap->he_cap_elem.phy_cap_info) ||
1817                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1818                             sizeof(he_cap->he_mcs_nss_supp),
1819                             &he_cap->he_mcs_nss_supp) ||
1820                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1821                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1822                         return -ENOBUFS;
1823         }
1824
1825         if (eht_cap->has_eht && he_cap->has_he) {
1826                 u8 mcs_nss_size, ppe_thresh_size;
1827                 u16 ppe_thres_hdr;
1828                 bool is_ap;
1829
1830                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1831                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1832
1833                 mcs_nss_size =
1834                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1835                                                    &eht_cap->eht_cap_elem,
1836                                                    is_ap);
1837
1838                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1839                 ppe_thresh_size =
1840                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1841                                                eht_cap->eht_cap_elem.phy_cap_info);
1842
1843                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1844                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1845                             eht_cap->eht_cap_elem.mac_cap_info) ||
1846                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1847                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1848                             eht_cap->eht_cap_elem.phy_cap_info) ||
1849                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1850                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1851                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1852                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1853                         return -ENOBUFS;
1854         }
1855
1856         if (sband->band == NL80211_BAND_6GHZ &&
1857             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1858                     sizeof(iftdata->he_6ghz_capa),
1859                     &iftdata->he_6ghz_capa))
1860                 return -ENOBUFS;
1861
1862         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1863             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1864                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1865                 return -ENOBUFS;
1866
1867         return 0;
1868 }
1869
1870 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1871                                       struct ieee80211_supported_band *sband,
1872                                       bool large)
1873 {
1874         struct nlattr *nl_rates, *nl_rate;
1875         struct ieee80211_rate *rate;
1876         int i;
1877
1878         /* add HT info */
1879         if (sband->ht_cap.ht_supported &&
1880             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1881                      sizeof(sband->ht_cap.mcs),
1882                      &sband->ht_cap.mcs) ||
1883              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1884                          sband->ht_cap.cap) ||
1885              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1886                         sband->ht_cap.ampdu_factor) ||
1887              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1888                         sband->ht_cap.ampdu_density)))
1889                 return -ENOBUFS;
1890
1891         /* add VHT info */
1892         if (sband->vht_cap.vht_supported &&
1893             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1894                      sizeof(sband->vht_cap.vht_mcs),
1895                      &sband->vht_cap.vht_mcs) ||
1896              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1897                          sband->vht_cap.cap)))
1898                 return -ENOBUFS;
1899
1900         if (large && sband->n_iftype_data) {
1901                 struct nlattr *nl_iftype_data =
1902                         nla_nest_start_noflag(msg,
1903                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1904                 int err;
1905
1906                 if (!nl_iftype_data)
1907                         return -ENOBUFS;
1908
1909                 for (i = 0; i < sband->n_iftype_data; i++) {
1910                         struct nlattr *iftdata;
1911
1912                         iftdata = nla_nest_start_noflag(msg, i + 1);
1913                         if (!iftdata)
1914                                 return -ENOBUFS;
1915
1916                         err = nl80211_send_iftype_data(msg, sband,
1917                                                        &sband->iftype_data[i]);
1918                         if (err)
1919                                 return err;
1920
1921                         nla_nest_end(msg, iftdata);
1922                 }
1923
1924                 nla_nest_end(msg, nl_iftype_data);
1925         }
1926
1927         /* add EDMG info */
1928         if (large && sband->edmg_cap.channels &&
1929             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1930                        sband->edmg_cap.channels) ||
1931             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1932                        sband->edmg_cap.bw_config)))
1933
1934                 return -ENOBUFS;
1935
1936         /* add bitrates */
1937         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1938         if (!nl_rates)
1939                 return -ENOBUFS;
1940
1941         for (i = 0; i < sband->n_bitrates; i++) {
1942                 nl_rate = nla_nest_start_noflag(msg, i);
1943                 if (!nl_rate)
1944                         return -ENOBUFS;
1945
1946                 rate = &sband->bitrates[i];
1947                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1948                                 rate->bitrate))
1949                         return -ENOBUFS;
1950                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1951                     nla_put_flag(msg,
1952                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1953                         return -ENOBUFS;
1954
1955                 nla_nest_end(msg, nl_rate);
1956         }
1957
1958         nla_nest_end(msg, nl_rates);
1959
1960         return 0;
1961 }
1962
1963 static int
1964 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1965                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1966 {
1967         u16 stypes;
1968         struct nlattr *nl_ftypes, *nl_ifs;
1969         enum nl80211_iftype ift;
1970         int i;
1971
1972         if (!mgmt_stypes)
1973                 return 0;
1974
1975         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1976         if (!nl_ifs)
1977                 return -ENOBUFS;
1978
1979         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1980                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1981                 if (!nl_ftypes)
1982                         return -ENOBUFS;
1983                 i = 0;
1984                 stypes = mgmt_stypes[ift].tx;
1985                 while (stypes) {
1986                         if ((stypes & 1) &&
1987                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1988                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1989                                 return -ENOBUFS;
1990                         stypes >>= 1;
1991                         i++;
1992                 }
1993                 nla_nest_end(msg, nl_ftypes);
1994         }
1995
1996         nla_nest_end(msg, nl_ifs);
1997
1998         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1999         if (!nl_ifs)
2000                 return -ENOBUFS;
2001
2002         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2003                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2004                 if (!nl_ftypes)
2005                         return -ENOBUFS;
2006                 i = 0;
2007                 stypes = mgmt_stypes[ift].rx;
2008                 while (stypes) {
2009                         if ((stypes & 1) &&
2010                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2011                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2012                                 return -ENOBUFS;
2013                         stypes >>= 1;
2014                         i++;
2015                 }
2016                 nla_nest_end(msg, nl_ftypes);
2017         }
2018         nla_nest_end(msg, nl_ifs);
2019
2020         return 0;
2021 }
2022
2023 #define CMD(op, n)                                                      \
2024          do {                                                           \
2025                 if (rdev->ops->op) {                                    \
2026                         i++;                                            \
2027                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2028                                 goto nla_put_failure;                   \
2029                 }                                                       \
2030         } while (0)
2031
2032 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2033                                         struct sk_buff *msg)
2034 {
2035         int i = 0;
2036
2037         /*
2038          * do *NOT* add anything into this function, new things need to be
2039          * advertised only to new versions of userspace that can deal with
2040          * the split (and they can't possibly care about new features...
2041          */
2042         CMD(add_virtual_intf, NEW_INTERFACE);
2043         CMD(change_virtual_intf, SET_INTERFACE);
2044         CMD(add_key, NEW_KEY);
2045         CMD(start_ap, START_AP);
2046         CMD(add_station, NEW_STATION);
2047         CMD(add_mpath, NEW_MPATH);
2048         CMD(update_mesh_config, SET_MESH_CONFIG);
2049         CMD(change_bss, SET_BSS);
2050         CMD(auth, AUTHENTICATE);
2051         CMD(assoc, ASSOCIATE);
2052         CMD(deauth, DEAUTHENTICATE);
2053         CMD(disassoc, DISASSOCIATE);
2054         CMD(join_ibss, JOIN_IBSS);
2055         CMD(join_mesh, JOIN_MESH);
2056         CMD(set_pmksa, SET_PMKSA);
2057         CMD(del_pmksa, DEL_PMKSA);
2058         CMD(flush_pmksa, FLUSH_PMKSA);
2059         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2060                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2061         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2062         CMD(mgmt_tx, FRAME);
2063         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2064         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2065                 i++;
2066                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2067                         goto nla_put_failure;
2068         }
2069         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2070             rdev->ops->join_mesh) {
2071                 i++;
2072                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2073                         goto nla_put_failure;
2074         }
2075         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2076                 CMD(tdls_mgmt, TDLS_MGMT);
2077                 CMD(tdls_oper, TDLS_OPER);
2078         }
2079         if (rdev->wiphy.max_sched_scan_reqs)
2080                 CMD(sched_scan_start, START_SCHED_SCAN);
2081         CMD(probe_client, PROBE_CLIENT);
2082         CMD(set_noack_map, SET_NOACK_MAP);
2083         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2084                 i++;
2085                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2086                         goto nla_put_failure;
2087         }
2088         CMD(start_p2p_device, START_P2P_DEVICE);
2089         CMD(set_mcast_rate, SET_MCAST_RATE);
2090 #ifdef CONFIG_NL80211_TESTMODE
2091         CMD(testmode_cmd, TESTMODE);
2092 #endif
2093
2094         if (rdev->ops->connect || rdev->ops->auth) {
2095                 i++;
2096                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2097                         goto nla_put_failure;
2098         }
2099
2100         if (rdev->ops->disconnect || rdev->ops->deauth) {
2101                 i++;
2102                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2103                         goto nla_put_failure;
2104         }
2105
2106         return i;
2107  nla_put_failure:
2108         return -ENOBUFS;
2109 }
2110
2111 static int
2112 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2113                            struct sk_buff *msg)
2114 {
2115         struct nlattr *ftm;
2116
2117         if (!cap->ftm.supported)
2118                 return 0;
2119
2120         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2121         if (!ftm)
2122                 return -ENOBUFS;
2123
2124         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2125                 return -ENOBUFS;
2126         if (cap->ftm.non_asap &&
2127             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2128                 return -ENOBUFS;
2129         if (cap->ftm.request_lci &&
2130             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2131                 return -ENOBUFS;
2132         if (cap->ftm.request_civicloc &&
2133             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2134                 return -ENOBUFS;
2135         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2136                         cap->ftm.preambles))
2137                 return -ENOBUFS;
2138         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2139                         cap->ftm.bandwidths))
2140                 return -ENOBUFS;
2141         if (cap->ftm.max_bursts_exponent >= 0 &&
2142             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2143                         cap->ftm.max_bursts_exponent))
2144                 return -ENOBUFS;
2145         if (cap->ftm.max_ftms_per_burst &&
2146             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2147                         cap->ftm.max_ftms_per_burst))
2148                 return -ENOBUFS;
2149         if (cap->ftm.trigger_based &&
2150             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2151                 return -ENOBUFS;
2152         if (cap->ftm.non_trigger_based &&
2153             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2154                 return -ENOBUFS;
2155
2156         nla_nest_end(msg, ftm);
2157         return 0;
2158 }
2159
2160 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2161                                   struct sk_buff *msg)
2162 {
2163         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2164         struct nlattr *pmsr, *caps;
2165
2166         if (!cap)
2167                 return 0;
2168
2169         /*
2170          * we don't need to clean up anything here since the caller
2171          * will genlmsg_cancel() if we fail
2172          */
2173
2174         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2175         if (!pmsr)
2176                 return -ENOBUFS;
2177
2178         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2179                 return -ENOBUFS;
2180
2181         if (cap->report_ap_tsf &&
2182             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2183                 return -ENOBUFS;
2184
2185         if (cap->randomize_mac_addr &&
2186             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2187                 return -ENOBUFS;
2188
2189         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2190         if (!caps)
2191                 return -ENOBUFS;
2192
2193         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2194                 return -ENOBUFS;
2195
2196         nla_nest_end(msg, caps);
2197         nla_nest_end(msg, pmsr);
2198
2199         return 0;
2200 }
2201
2202 static int
2203 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2204                               struct sk_buff *msg)
2205 {
2206         int i;
2207         struct nlattr *nested, *nested_akms;
2208         const struct wiphy_iftype_akm_suites *iftype_akms;
2209
2210         if (!rdev->wiphy.num_iftype_akm_suites ||
2211             !rdev->wiphy.iftype_akm_suites)
2212                 return 0;
2213
2214         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2215         if (!nested)
2216                 return -ENOBUFS;
2217
2218         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2219                 nested_akms = nla_nest_start(msg, i + 1);
2220                 if (!nested_akms)
2221                         return -ENOBUFS;
2222
2223                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2224
2225                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2226                                         iftype_akms->iftypes_mask))
2227                         return -ENOBUFS;
2228
2229                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2230                             sizeof(u32) * iftype_akms->n_akm_suites,
2231                             iftype_akms->akm_suites)) {
2232                         return -ENOBUFS;
2233                 }
2234                 nla_nest_end(msg, nested_akms);
2235         }
2236
2237         nla_nest_end(msg, nested);
2238
2239         return 0;
2240 }
2241
2242 static int
2243 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2244                                struct sk_buff *msg)
2245 {
2246         struct nlattr *supp;
2247
2248         if (!rdev->wiphy.tid_config_support.vif &&
2249             !rdev->wiphy.tid_config_support.peer)
2250                 return 0;
2251
2252         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2253         if (!supp)
2254                 return -ENOSPC;
2255
2256         if (rdev->wiphy.tid_config_support.vif &&
2257             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2258                               rdev->wiphy.tid_config_support.vif,
2259                               NL80211_TID_CONFIG_ATTR_PAD))
2260                 goto fail;
2261
2262         if (rdev->wiphy.tid_config_support.peer &&
2263             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2264                               rdev->wiphy.tid_config_support.peer,
2265                               NL80211_TID_CONFIG_ATTR_PAD))
2266                 goto fail;
2267
2268         /* for now we just use the same value ... makes more sense */
2269         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2270                        rdev->wiphy.tid_config_support.max_retry))
2271                 goto fail;
2272         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2273                        rdev->wiphy.tid_config_support.max_retry))
2274                 goto fail;
2275
2276         nla_nest_end(msg, supp);
2277
2278         return 0;
2279 fail:
2280         nla_nest_cancel(msg, supp);
2281         return -ENOBUFS;
2282 }
2283
2284 static int
2285 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2286                       struct sk_buff *msg)
2287 {
2288         struct nlattr *sar_capa, *specs, *sub_freq_range;
2289         u8 num_freq_ranges;
2290         int i;
2291
2292         if (!rdev->wiphy.sar_capa)
2293                 return 0;
2294
2295         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2296
2297         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2298         if (!sar_capa)
2299                 return -ENOSPC;
2300
2301         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2302                 goto fail;
2303
2304         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2305         if (!specs)
2306                 goto fail;
2307
2308         /* report supported freq_ranges */
2309         for (i = 0; i < num_freq_ranges; i++) {
2310                 sub_freq_range = nla_nest_start(msg, i + 1);
2311                 if (!sub_freq_range)
2312                         goto fail;
2313
2314                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2315                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2316                         goto fail;
2317
2318                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2319                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2320                         goto fail;
2321
2322                 nla_nest_end(msg, sub_freq_range);
2323         }
2324
2325         nla_nest_end(msg, specs);
2326         nla_nest_end(msg, sar_capa);
2327
2328         return 0;
2329 fail:
2330         nla_nest_cancel(msg, sar_capa);
2331         return -ENOBUFS;
2332 }
2333
2334 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2335 {
2336         struct nlattr *config;
2337
2338         if (!wiphy->mbssid_max_interfaces)
2339                 return 0;
2340
2341         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2342         if (!config)
2343                 return -ENOBUFS;
2344
2345         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2346                        wiphy->mbssid_max_interfaces))
2347                 goto fail;
2348
2349         if (wiphy->ema_max_profile_periodicity &&
2350             nla_put_u8(msg,
2351                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2352                        wiphy->ema_max_profile_periodicity))
2353                 goto fail;
2354
2355         nla_nest_end(msg, config);
2356         return 0;
2357
2358 fail:
2359         nla_nest_cancel(msg, config);
2360         return -ENOBUFS;
2361 }
2362
2363 struct nl80211_dump_wiphy_state {
2364         s64 filter_wiphy;
2365         long start;
2366         long split_start, band_start, chan_start, capa_start;
2367         bool split;
2368 };
2369
2370 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2371                               enum nl80211_commands cmd,
2372                               struct sk_buff *msg, u32 portid, u32 seq,
2373                               int flags, struct nl80211_dump_wiphy_state *state)
2374 {
2375         void *hdr;
2376         struct nlattr *nl_bands, *nl_band;
2377         struct nlattr *nl_freqs, *nl_freq;
2378         struct nlattr *nl_cmds;
2379         enum nl80211_band band;
2380         struct ieee80211_channel *chan;
2381         int i;
2382         const struct ieee80211_txrx_stypes *mgmt_stypes =
2383                                 rdev->wiphy.mgmt_stypes;
2384         u32 features;
2385
2386         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2387         if (!hdr)
2388                 return -ENOBUFS;
2389
2390         if (WARN_ON(!state))
2391                 return -EINVAL;
2392
2393         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2394             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2395                            wiphy_name(&rdev->wiphy)) ||
2396             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2397                         cfg80211_rdev_list_generation))
2398                 goto nla_put_failure;
2399
2400         if (cmd != NL80211_CMD_NEW_WIPHY)
2401                 goto finish;
2402
2403         switch (state->split_start) {
2404         case 0:
2405                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2406                                rdev->wiphy.retry_short) ||
2407                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2408                                rdev->wiphy.retry_long) ||
2409                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2410                                 rdev->wiphy.frag_threshold) ||
2411                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2412                                 rdev->wiphy.rts_threshold) ||
2413                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2414                                rdev->wiphy.coverage_class) ||
2415                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2416                                rdev->wiphy.max_scan_ssids) ||
2417                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2418                                rdev->wiphy.max_sched_scan_ssids) ||
2419                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2420                                 rdev->wiphy.max_scan_ie_len) ||
2421                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2422                                 rdev->wiphy.max_sched_scan_ie_len) ||
2423                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2424                                rdev->wiphy.max_match_sets))
2425                         goto nla_put_failure;
2426
2427                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2428                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2429                         goto nla_put_failure;
2430                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2431                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2432                         goto nla_put_failure;
2433                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2434                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2435                         goto nla_put_failure;
2436                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2437                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2438                         goto nla_put_failure;
2439                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2440                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2441                         goto nla_put_failure;
2442                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2443                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2444                         goto nla_put_failure;
2445                 state->split_start++;
2446                 if (state->split)
2447                         break;
2448                 fallthrough;
2449         case 1:
2450                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2451                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2452                             rdev->wiphy.cipher_suites))
2453                         goto nla_put_failure;
2454
2455                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2456                                rdev->wiphy.max_num_pmkids))
2457                         goto nla_put_failure;
2458
2459                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2460                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2461                         goto nla_put_failure;
2462
2463                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2464                                 rdev->wiphy.available_antennas_tx) ||
2465                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2466                                 rdev->wiphy.available_antennas_rx))
2467                         goto nla_put_failure;
2468
2469                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2470                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2471                                 rdev->wiphy.probe_resp_offload))
2472                         goto nla_put_failure;
2473
2474                 if ((rdev->wiphy.available_antennas_tx ||
2475                      rdev->wiphy.available_antennas_rx) &&
2476                     rdev->ops->get_antenna) {
2477                         u32 tx_ant = 0, rx_ant = 0;
2478                         int res;
2479
2480                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2481                         if (!res) {
2482                                 if (nla_put_u32(msg,
2483                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2484                                                 tx_ant) ||
2485                                     nla_put_u32(msg,
2486                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2487                                                 rx_ant))
2488                                         goto nla_put_failure;
2489                         }
2490                 }
2491
2492                 state->split_start++;
2493                 if (state->split)
2494                         break;
2495                 fallthrough;
2496         case 2:
2497                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2498                                         rdev->wiphy.interface_modes))
2499                                 goto nla_put_failure;
2500                 state->split_start++;
2501                 if (state->split)
2502                         break;
2503                 fallthrough;
2504         case 3:
2505                 nl_bands = nla_nest_start_noflag(msg,
2506                                                  NL80211_ATTR_WIPHY_BANDS);
2507                 if (!nl_bands)
2508                         goto nla_put_failure;
2509
2510                 for (band = state->band_start;
2511                      band < (state->split ?
2512                                 NUM_NL80211_BANDS :
2513                                 NL80211_BAND_60GHZ + 1);
2514                      band++) {
2515                         struct ieee80211_supported_band *sband;
2516
2517                         /* omit higher bands for ancient software */
2518                         if (band > NL80211_BAND_5GHZ && !state->split)
2519                                 break;
2520
2521                         sband = rdev->wiphy.bands[band];
2522
2523                         if (!sband)
2524                                 continue;
2525
2526                         nl_band = nla_nest_start_noflag(msg, band);
2527                         if (!nl_band)
2528                                 goto nla_put_failure;
2529
2530                         switch (state->chan_start) {
2531                         case 0:
2532                                 if (nl80211_send_band_rateinfo(msg, sband,
2533                                                                state->split))
2534                                         goto nla_put_failure;
2535                                 state->chan_start++;
2536                                 if (state->split)
2537                                         break;
2538                                 fallthrough;
2539                         default:
2540                                 /* add frequencies */
2541                                 nl_freqs = nla_nest_start_noflag(msg,
2542                                                                  NL80211_BAND_ATTR_FREQS);
2543                                 if (!nl_freqs)
2544                                         goto nla_put_failure;
2545
2546                                 for (i = state->chan_start - 1;
2547                                      i < sband->n_channels;
2548                                      i++) {
2549                                         nl_freq = nla_nest_start_noflag(msg,
2550                                                                         i);
2551                                         if (!nl_freq)
2552                                                 goto nla_put_failure;
2553
2554                                         chan = &sband->channels[i];
2555
2556                                         if (nl80211_msg_put_channel(
2557                                                         msg, &rdev->wiphy, chan,
2558                                                         state->split))
2559                                                 goto nla_put_failure;
2560
2561                                         nla_nest_end(msg, nl_freq);
2562                                         if (state->split)
2563                                                 break;
2564                                 }
2565                                 if (i < sband->n_channels)
2566                                         state->chan_start = i + 2;
2567                                 else
2568                                         state->chan_start = 0;
2569                                 nla_nest_end(msg, nl_freqs);
2570                         }
2571
2572                         nla_nest_end(msg, nl_band);
2573
2574                         if (state->split) {
2575                                 /* start again here */
2576                                 if (state->chan_start)
2577                                         band--;
2578                                 break;
2579                         }
2580                 }
2581                 nla_nest_end(msg, nl_bands);
2582
2583                 if (band < NUM_NL80211_BANDS)
2584                         state->band_start = band + 1;
2585                 else
2586                         state->band_start = 0;
2587
2588                 /* if bands & channels are done, continue outside */
2589                 if (state->band_start == 0 && state->chan_start == 0)
2590                         state->split_start++;
2591                 if (state->split)
2592                         break;
2593                 fallthrough;
2594         case 4:
2595                 nl_cmds = nla_nest_start_noflag(msg,
2596                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2597                 if (!nl_cmds)
2598                         goto nla_put_failure;
2599
2600                 i = nl80211_add_commands_unsplit(rdev, msg);
2601                 if (i < 0)
2602                         goto nla_put_failure;
2603                 if (state->split) {
2604                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2605                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2606                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2607                                 CMD(channel_switch, CHANNEL_SWITCH);
2608                         CMD(set_qos_map, SET_QOS_MAP);
2609                         if (rdev->wiphy.features &
2610                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2611                                 CMD(add_tx_ts, ADD_TX_TS);
2612                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2613                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2614                         CMD(update_ft_ies, UPDATE_FT_IES);
2615                         if (rdev->wiphy.sar_capa)
2616                                 CMD(set_sar_specs, SET_SAR_SPECS);
2617                 }
2618 #undef CMD
2619
2620                 nla_nest_end(msg, nl_cmds);
2621                 state->split_start++;
2622                 if (state->split)
2623                         break;
2624                 fallthrough;
2625         case 5:
2626                 if (rdev->ops->remain_on_channel &&
2627                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2628                     nla_put_u32(msg,
2629                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2630                                 rdev->wiphy.max_remain_on_channel_duration))
2631                         goto nla_put_failure;
2632
2633                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2634                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2635                         goto nla_put_failure;
2636
2637                 state->split_start++;
2638                 if (state->split)
2639                         break;
2640                 fallthrough;
2641         case 6:
2642 #ifdef CONFIG_PM
2643                 if (nl80211_send_wowlan(msg, rdev, state->split))
2644                         goto nla_put_failure;
2645                 state->split_start++;
2646                 if (state->split)
2647                         break;
2648 #else
2649                 state->split_start++;
2650 #endif
2651                 fallthrough;
2652         case 7:
2653                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2654                                         rdev->wiphy.software_iftypes))
2655                         goto nla_put_failure;
2656
2657                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2658                                                    state->split))
2659                         goto nla_put_failure;
2660
2661                 state->split_start++;
2662                 if (state->split)
2663                         break;
2664                 fallthrough;
2665         case 8:
2666                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2667                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2668                                 rdev->wiphy.ap_sme_capa))
2669                         goto nla_put_failure;
2670
2671                 features = rdev->wiphy.features;
2672                 /*
2673                  * We can only add the per-channel limit information if the
2674                  * dump is split, otherwise it makes it too big. Therefore
2675                  * only advertise it in that case.
2676                  */
2677                 if (state->split)
2678                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2679                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2680                         goto nla_put_failure;
2681
2682                 if (rdev->wiphy.ht_capa_mod_mask &&
2683                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2684                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2685                             rdev->wiphy.ht_capa_mod_mask))
2686                         goto nla_put_failure;
2687
2688                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2689                     rdev->wiphy.max_acl_mac_addrs &&
2690                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2691                                 rdev->wiphy.max_acl_mac_addrs))
2692                         goto nla_put_failure;
2693
2694                 /*
2695                  * Any information below this point is only available to
2696                  * applications that can deal with it being split. This
2697                  * helps ensure that newly added capabilities don't break
2698                  * older tools by overrunning their buffers.
2699                  *
2700                  * We still increment split_start so that in the split
2701                  * case we'll continue with more data in the next round,
2702                  * but break unconditionally so unsplit data stops here.
2703                  */
2704                 if (state->split)
2705                         state->split_start++;
2706                 else
2707                         state->split_start = 0;
2708                 break;
2709         case 9:
2710                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2711                         goto nla_put_failure;
2712
2713                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2714                                 rdev->wiphy.max_sched_scan_plans) ||
2715                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2716                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2717                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2718                                 rdev->wiphy.max_sched_scan_plan_iterations))
2719                         goto nla_put_failure;
2720
2721                 if (rdev->wiphy.extended_capabilities &&
2722                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2723                              rdev->wiphy.extended_capabilities_len,
2724                              rdev->wiphy.extended_capabilities) ||
2725                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2726                              rdev->wiphy.extended_capabilities_len,
2727                              rdev->wiphy.extended_capabilities_mask)))
2728                         goto nla_put_failure;
2729
2730                 if (rdev->wiphy.vht_capa_mod_mask &&
2731                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2732                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2733                             rdev->wiphy.vht_capa_mod_mask))
2734                         goto nla_put_failure;
2735
2736                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2737                             rdev->wiphy.perm_addr))
2738                         goto nla_put_failure;
2739
2740                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2741                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2742                             rdev->wiphy.addr_mask))
2743                         goto nla_put_failure;
2744
2745                 if (rdev->wiphy.n_addresses > 1) {
2746                         void *attr;
2747
2748                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2749                         if (!attr)
2750                                 goto nla_put_failure;
2751
2752                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2753                                 if (nla_put(msg, i + 1, ETH_ALEN,
2754                                             rdev->wiphy.addresses[i].addr))
2755                                         goto nla_put_failure;
2756
2757                         nla_nest_end(msg, attr);
2758                 }
2759
2760                 state->split_start++;
2761                 break;
2762         case 10:
2763                 if (nl80211_send_coalesce(msg, rdev))
2764                         goto nla_put_failure;
2765
2766                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2767                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2768                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2769                         goto nla_put_failure;
2770
2771                 if (rdev->wiphy.max_ap_assoc_sta &&
2772                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2773                                 rdev->wiphy.max_ap_assoc_sta))
2774                         goto nla_put_failure;
2775
2776                 state->split_start++;
2777                 break;
2778         case 11:
2779                 if (rdev->wiphy.n_vendor_commands) {
2780                         const struct nl80211_vendor_cmd_info *info;
2781                         struct nlattr *nested;
2782
2783                         nested = nla_nest_start_noflag(msg,
2784                                                        NL80211_ATTR_VENDOR_DATA);
2785                         if (!nested)
2786                                 goto nla_put_failure;
2787
2788                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2789                                 info = &rdev->wiphy.vendor_commands[i].info;
2790                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2791                                         goto nla_put_failure;
2792                         }
2793                         nla_nest_end(msg, nested);
2794                 }
2795
2796                 if (rdev->wiphy.n_vendor_events) {
2797                         const struct nl80211_vendor_cmd_info *info;
2798                         struct nlattr *nested;
2799
2800                         nested = nla_nest_start_noflag(msg,
2801                                                        NL80211_ATTR_VENDOR_EVENTS);
2802                         if (!nested)
2803                                 goto nla_put_failure;
2804
2805                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2806                                 info = &rdev->wiphy.vendor_events[i];
2807                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2808                                         goto nla_put_failure;
2809                         }
2810                         nla_nest_end(msg, nested);
2811                 }
2812                 state->split_start++;
2813                 break;
2814         case 12:
2815                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2816                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2817                                rdev->wiphy.max_num_csa_counters))
2818                         goto nla_put_failure;
2819
2820                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2821                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2822                         goto nla_put_failure;
2823
2824                 if (rdev->wiphy.max_sched_scan_reqs &&
2825                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2826                                 rdev->wiphy.max_sched_scan_reqs))
2827                         goto nla_put_failure;
2828
2829                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2830                             sizeof(rdev->wiphy.ext_features),
2831                             rdev->wiphy.ext_features))
2832                         goto nla_put_failure;
2833
2834                 if (rdev->wiphy.bss_select_support) {
2835                         struct nlattr *nested;
2836                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2837
2838                         nested = nla_nest_start_noflag(msg,
2839                                                        NL80211_ATTR_BSS_SELECT);
2840                         if (!nested)
2841                                 goto nla_put_failure;
2842
2843                         i = 0;
2844                         while (bss_select_support) {
2845                                 if ((bss_select_support & 1) &&
2846                                     nla_put_flag(msg, i))
2847                                         goto nla_put_failure;
2848                                 i++;
2849                                 bss_select_support >>= 1;
2850                         }
2851                         nla_nest_end(msg, nested);
2852                 }
2853
2854                 state->split_start++;
2855                 break;
2856         case 13:
2857                 if (rdev->wiphy.num_iftype_ext_capab &&
2858                     rdev->wiphy.iftype_ext_capab) {
2859                         struct nlattr *nested_ext_capab, *nested;
2860
2861                         nested = nla_nest_start_noflag(msg,
2862                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2863                         if (!nested)
2864                                 goto nla_put_failure;
2865
2866                         for (i = state->capa_start;
2867                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2868                                 const struct wiphy_iftype_ext_capab *capab;
2869
2870                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2871
2872                                 nested_ext_capab = nla_nest_start_noflag(msg,
2873                                                                          i);
2874                                 if (!nested_ext_capab ||
2875                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2876                                                 capab->iftype) ||
2877                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2878                                             capab->extended_capabilities_len,
2879                                             capab->extended_capabilities) ||
2880                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2881                                             capab->extended_capabilities_len,
2882                                             capab->extended_capabilities_mask))
2883                                         goto nla_put_failure;
2884
2885                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2886                                     (nla_put_u16(msg,
2887                                                  NL80211_ATTR_EML_CAPABILITY,
2888                                                  capab->eml_capabilities) ||
2889                                      nla_put_u16(msg,
2890                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2891                                                  capab->mld_capa_and_ops)))
2892                                         goto nla_put_failure;
2893
2894                                 nla_nest_end(msg, nested_ext_capab);
2895                                 if (state->split)
2896                                         break;
2897                         }
2898                         nla_nest_end(msg, nested);
2899                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2900                                 state->capa_start = i + 1;
2901                                 break;
2902                         }
2903                 }
2904
2905                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2906                                 rdev->wiphy.nan_supported_bands))
2907                         goto nla_put_failure;
2908
2909                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2910                                             NL80211_EXT_FEATURE_TXQS)) {
2911                         struct cfg80211_txq_stats txqstats = {};
2912                         int res;
2913
2914                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2915                         if (!res &&
2916                             !nl80211_put_txq_stats(msg, &txqstats,
2917                                                    NL80211_ATTR_TXQ_STATS))
2918                                 goto nla_put_failure;
2919
2920                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2921                                         rdev->wiphy.txq_limit))
2922                                 goto nla_put_failure;
2923                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2924                                         rdev->wiphy.txq_memory_limit))
2925                                 goto nla_put_failure;
2926                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2927                                         rdev->wiphy.txq_quantum))
2928                                 goto nla_put_failure;
2929                 }
2930
2931                 state->split_start++;
2932                 break;
2933         case 14:
2934                 if (nl80211_send_pmsr_capa(rdev, msg))
2935                         goto nla_put_failure;
2936
2937                 state->split_start++;
2938                 break;
2939         case 15:
2940                 if (rdev->wiphy.akm_suites &&
2941                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2942                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2943                             rdev->wiphy.akm_suites))
2944                         goto nla_put_failure;
2945
2946                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2947                         goto nla_put_failure;
2948
2949                 if (nl80211_put_tid_config_support(rdev, msg))
2950                         goto nla_put_failure;
2951                 state->split_start++;
2952                 break;
2953         case 16:
2954                 if (nl80211_put_sar_specs(rdev, msg))
2955                         goto nla_put_failure;
2956
2957                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2958                         goto nla_put_failure;
2959
2960                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2961                                 rdev->wiphy.max_num_akm_suites))
2962                         goto nla_put_failure;
2963
2964                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2965                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2966
2967                 /* done */
2968                 state->split_start = 0;
2969                 break;
2970         }
2971  finish:
2972         genlmsg_end(msg, hdr);
2973         return 0;
2974
2975  nla_put_failure:
2976         genlmsg_cancel(msg, hdr);
2977         return -EMSGSIZE;
2978 }
2979
2980 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2981                                     struct netlink_callback *cb,
2982                                     struct nl80211_dump_wiphy_state *state)
2983 {
2984         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2985         int ret;
2986
2987         if (!tb)
2988                 return -ENOMEM;
2989
2990         ret = nlmsg_parse_deprecated(cb->nlh,
2991                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2992                                      tb, nl80211_fam.maxattr,
2993                                      nl80211_policy, NULL);
2994         /* ignore parse errors for backward compatibility */
2995         if (ret) {
2996                 ret = 0;
2997                 goto out;
2998         }
2999
3000         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3001         if (tb[NL80211_ATTR_WIPHY])
3002                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3003         if (tb[NL80211_ATTR_WDEV])
3004                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3005         if (tb[NL80211_ATTR_IFINDEX]) {
3006                 struct net_device *netdev;
3007                 struct cfg80211_registered_device *rdev;
3008                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3009
3010                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3011                 if (!netdev) {
3012                         ret = -ENODEV;
3013                         goto out;
3014                 }
3015                 if (netdev->ieee80211_ptr) {
3016                         rdev = wiphy_to_rdev(
3017                                 netdev->ieee80211_ptr->wiphy);
3018                         state->filter_wiphy = rdev->wiphy_idx;
3019                 }
3020         }
3021
3022         ret = 0;
3023 out:
3024         kfree(tb);
3025         return ret;
3026 }
3027
3028 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3029 {
3030         int idx = 0, ret;
3031         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3032         struct cfg80211_registered_device *rdev;
3033
3034         rtnl_lock();
3035         if (!state) {
3036                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3037                 if (!state) {
3038                         rtnl_unlock();
3039                         return -ENOMEM;
3040                 }
3041                 state->filter_wiphy = -1;
3042                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3043                 if (ret) {
3044                         kfree(state);
3045                         rtnl_unlock();
3046                         return ret;
3047                 }
3048                 cb->args[0] = (long)state;
3049         }
3050
3051         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3052                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3053                         continue;
3054                 if (++idx <= state->start)
3055                         continue;
3056                 if (state->filter_wiphy != -1 &&
3057                     state->filter_wiphy != rdev->wiphy_idx)
3058                         continue;
3059                 /* attempt to fit multiple wiphy data chunks into the skb */
3060                 do {
3061                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3062                                                  skb,
3063                                                  NETLINK_CB(cb->skb).portid,
3064                                                  cb->nlh->nlmsg_seq,
3065                                                  NLM_F_MULTI, state);
3066                         if (ret < 0) {
3067                                 /*
3068                                  * If sending the wiphy data didn't fit (ENOBUFS
3069                                  * or EMSGSIZE returned), this SKB is still
3070                                  * empty (so it's not too big because another
3071                                  * wiphy dataset is already in the skb) and
3072                                  * we've not tried to adjust the dump allocation
3073                                  * yet ... then adjust the alloc size to be
3074                                  * bigger, and return 1 but with the empty skb.
3075                                  * This results in an empty message being RX'ed
3076                                  * in userspace, but that is ignored.
3077                                  *
3078                                  * We can then retry with the larger buffer.
3079                                  */
3080                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3081                                     !skb->len && !state->split &&
3082                                     cb->min_dump_alloc < 4096) {
3083                                         cb->min_dump_alloc = 4096;
3084                                         state->split_start = 0;
3085                                         rtnl_unlock();
3086                                         return 1;
3087                                 }
3088                                 idx--;
3089                                 break;
3090                         }
3091                 } while (state->split_start > 0);
3092                 break;
3093         }
3094         rtnl_unlock();
3095
3096         state->start = idx;
3097
3098         return skb->len;
3099 }
3100
3101 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3102 {
3103         kfree((void *)cb->args[0]);
3104         return 0;
3105 }
3106
3107 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3108 {
3109         struct sk_buff *msg;
3110         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3111         struct nl80211_dump_wiphy_state state = {};
3112
3113         msg = nlmsg_new(4096, GFP_KERNEL);
3114         if (!msg)
3115                 return -ENOMEM;
3116
3117         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3118                                info->snd_portid, info->snd_seq, 0,
3119                                &state) < 0) {
3120                 nlmsg_free(msg);
3121                 return -ENOBUFS;
3122         }
3123
3124         return genlmsg_reply(msg, info);
3125 }
3126
3127 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3128         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3129         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3130         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3131         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3132         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3133 };
3134
3135 static int parse_txq_params(struct nlattr *tb[],
3136                             struct ieee80211_txq_params *txq_params)
3137 {
3138         u8 ac;
3139
3140         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3141             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3142             !tb[NL80211_TXQ_ATTR_AIFS])
3143                 return -EINVAL;
3144
3145         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3146         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3147         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3148         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3149         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3150
3151         if (ac >= NL80211_NUM_ACS)
3152                 return -EINVAL;
3153         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3154         return 0;
3155 }
3156
3157 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3158 {
3159         /*
3160          * You can only set the channel explicitly for some interfaces,
3161          * most have their channel managed via their respective
3162          * "establish a connection" command (connect, join, ...)
3163          *
3164          * For AP/GO and mesh mode, the channel can be set with the
3165          * channel userspace API, but is only stored and passed to the
3166          * low-level driver when the AP starts or the mesh is joined.
3167          * This is for backward compatibility, userspace can also give
3168          * the channel in the start-ap or join-mesh commands instead.
3169          *
3170          * Monitors are special as they are normally slaved to
3171          * whatever else is going on, so they have their own special
3172          * operation to set the monitor channel if possible.
3173          */
3174         return !wdev ||
3175                 wdev->iftype == NL80211_IFTYPE_AP ||
3176                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3177                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3178                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3179 }
3180
3181 static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
3182                                       struct genl_info *info,
3183                                       const struct cfg80211_chan_def *chandef,
3184                                       u16 *punct_bitmap)
3185 {
3186         if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
3187                 return -EINVAL;
3188
3189         *punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3190         if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
3191                 return -EINVAL;
3192
3193         return 0;
3194 }
3195
3196 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3197                           struct genl_info *info,
3198                           struct cfg80211_chan_def *chandef)
3199 {
3200         struct netlink_ext_ack *extack = info->extack;
3201         struct nlattr **attrs = info->attrs;
3202         u32 control_freq;
3203
3204         if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3205                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3206                                     "Frequency is missing");
3207                 return -EINVAL;
3208         }
3209
3210         control_freq = MHZ_TO_KHZ(
3211                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3212         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3213                 control_freq +=
3214                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3215
3216         memset(chandef, 0, sizeof(*chandef));
3217         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3218         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3219         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3220         chandef->freq1_offset = control_freq % 1000;
3221         chandef->center_freq2 = 0;
3222
3223         /* Primary channel not allowed */
3224         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3225                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3226                                     "Channel is disabled");
3227                 return -EINVAL;
3228         }
3229
3230         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3231                 enum nl80211_channel_type chantype;
3232
3233                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3234
3235                 switch (chantype) {
3236                 case NL80211_CHAN_NO_HT:
3237                 case NL80211_CHAN_HT20:
3238                 case NL80211_CHAN_HT40PLUS:
3239                 case NL80211_CHAN_HT40MINUS:
3240                         cfg80211_chandef_create(chandef, chandef->chan,
3241                                                 chantype);
3242                         /* user input for center_freq is incorrect */
3243                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3244                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3245                                 NL_SET_ERR_MSG_ATTR(extack,
3246                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3247                                                     "bad center frequency 1");
3248                                 return -EINVAL;
3249                         }
3250                         /* center_freq2 must be zero */
3251                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3252                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3253                                 NL_SET_ERR_MSG_ATTR(extack,
3254                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3255                                                     "center frequency 2 can't be used");
3256                                 return -EINVAL;
3257                         }
3258                         break;
3259                 default:
3260                         NL_SET_ERR_MSG_ATTR(extack,
3261                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3262                                             "invalid channel type");
3263                         return -EINVAL;
3264                 }
3265         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3266                 chandef->width =
3267                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3268                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3269                         /* User input error for channel width doesn't match channel  */
3270                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3271                                 NL_SET_ERR_MSG_ATTR(extack,
3272                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3273                                                     "bad channel width");
3274                                 return -EINVAL;
3275                         }
3276                 }
3277                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3278                         chandef->center_freq1 =
3279                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3280                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3281                                 chandef->freq1_offset = nla_get_u32(
3282                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3283                         else
3284                                 chandef->freq1_offset = 0;
3285                 }
3286                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3287                         chandef->center_freq2 =
3288                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3289         }
3290
3291         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3292                 chandef->edmg.channels =
3293                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3294
3295                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3296                         chandef->edmg.bw_config =
3297                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3298         } else {
3299                 chandef->edmg.bw_config = 0;
3300                 chandef->edmg.channels = 0;
3301         }
3302
3303         if (!cfg80211_chandef_valid(chandef)) {
3304                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3305                 return -EINVAL;
3306         }
3307
3308         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3309                                      IEEE80211_CHAN_DISABLED)) {
3310                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3311                 return -EINVAL;
3312         }
3313
3314         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3315              chandef->width == NL80211_CHAN_WIDTH_10) &&
3316             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3317                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3318                 return -EINVAL;
3319         }
3320
3321         return 0;
3322 }
3323
3324 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3325                                  struct net_device *dev,
3326                                  struct genl_info *info,
3327                                  int _link_id)
3328 {
3329         struct cfg80211_chan_def chandef;
3330         int result;
3331         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3332         struct wireless_dev *wdev = NULL;
3333         int link_id = _link_id;
3334
3335         if (dev)
3336                 wdev = dev->ieee80211_ptr;
3337         if (!nl80211_can_set_dev_channel(wdev))
3338                 return -EOPNOTSUPP;
3339         if (wdev)
3340                 iftype = wdev->iftype;
3341
3342         if (link_id < 0) {
3343                 if (wdev && wdev->valid_links)
3344                         return -EINVAL;
3345                 link_id = 0;
3346         }
3347
3348         result = nl80211_parse_chandef(rdev, info, &chandef);
3349         if (result)
3350                 return result;
3351
3352         switch (iftype) {
3353         case NL80211_IFTYPE_AP:
3354         case NL80211_IFTYPE_P2P_GO:
3355                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3356                                                    iftype))
3357                         return -EINVAL;
3358                 if (wdev->links[link_id].ap.beacon_interval) {
3359                         struct ieee80211_channel *cur_chan;
3360
3361                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3362                             !(rdev->wiphy.features &
3363                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3364                                 return -EBUSY;
3365
3366                         /* Only allow dynamic channel width changes */
3367                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3368                         if (chandef.chan != cur_chan)
3369                                 return -EBUSY;
3370
3371                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3372                                                        &chandef);
3373                         if (result)
3374                                 return result;
3375                         wdev->links[link_id].ap.chandef = chandef;
3376                 } else {
3377                         wdev->u.ap.preset_chandef = chandef;
3378                 }
3379                 return 0;
3380         case NL80211_IFTYPE_MESH_POINT:
3381                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3382         case NL80211_IFTYPE_MONITOR:
3383                 return cfg80211_set_monitor_channel(rdev, &chandef);
3384         default:
3385                 break;
3386         }
3387
3388         return -EINVAL;
3389 }
3390
3391 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3392 {
3393         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3394         int link_id = nl80211_link_id_or_invalid(info->attrs);
3395         struct net_device *netdev = info->user_ptr[1];
3396         int ret;
3397
3398         wdev_lock(netdev->ieee80211_ptr);
3399         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3400         wdev_unlock(netdev->ieee80211_ptr);
3401
3402         return ret;
3403 }
3404
3405 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3406 {
3407         struct cfg80211_registered_device *rdev = NULL;
3408         struct net_device *netdev = NULL;
3409         struct wireless_dev *wdev;
3410         int result = 0, rem_txq_params = 0;
3411         struct nlattr *nl_txq_params;
3412         u32 changed;
3413         u8 retry_short = 0, retry_long = 0;
3414         u32 frag_threshold = 0, rts_threshold = 0;
3415         u8 coverage_class = 0;
3416         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3417
3418         rtnl_lock();
3419         /*
3420          * Try to find the wiphy and netdev. Normally this
3421          * function shouldn't need the netdev, but this is
3422          * done for backward compatibility -- previously
3423          * setting the channel was done per wiphy, but now
3424          * it is per netdev. Previous userland like hostapd
3425          * also passed a netdev to set_wiphy, so that it is
3426          * possible to let that go to the right netdev!
3427          */
3428
3429         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3430                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3431
3432                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3433                 if (netdev && netdev->ieee80211_ptr)
3434                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3435                 else
3436                         netdev = NULL;
3437         }
3438
3439         if (!netdev) {
3440                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3441                                                   info->attrs);
3442                 if (IS_ERR(rdev)) {
3443                         rtnl_unlock();
3444                         return PTR_ERR(rdev);
3445                 }
3446                 wdev = NULL;
3447                 netdev = NULL;
3448                 result = 0;
3449         } else
3450                 wdev = netdev->ieee80211_ptr;
3451
3452         wiphy_lock(&rdev->wiphy);
3453
3454         /*
3455          * end workaround code, by now the rdev is available
3456          * and locked, and wdev may or may not be NULL.
3457          */
3458
3459         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3460                 result = cfg80211_dev_rename(
3461                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3462         rtnl_unlock();
3463
3464         if (result)
3465                 goto out;
3466
3467         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3468                 struct ieee80211_txq_params txq_params;
3469                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3470
3471                 if (!rdev->ops->set_txq_params) {
3472                         result = -EOPNOTSUPP;
3473                         goto out;
3474                 }
3475
3476                 if (!netdev) {
3477                         result = -EINVAL;
3478                         goto out;
3479                 }
3480
3481                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3482                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3483                         result = -EINVAL;
3484                         goto out;
3485                 }
3486
3487                 if (!netif_running(netdev)) {
3488                         result = -ENETDOWN;
3489                         goto out;
3490                 }
3491
3492                 nla_for_each_nested(nl_txq_params,
3493                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3494                                     rem_txq_params) {
3495                         result = nla_parse_nested_deprecated(tb,
3496                                                              NL80211_TXQ_ATTR_MAX,
3497                                                              nl_txq_params,
3498                                                              txq_params_policy,
3499                                                              info->extack);
3500                         if (result)
3501                                 goto out;
3502                         result = parse_txq_params(tb, &txq_params);
3503                         if (result)
3504                                 goto out;
3505
3506                         txq_params.link_id =
3507                                 nl80211_link_id_or_invalid(info->attrs);
3508
3509                         wdev_lock(netdev->ieee80211_ptr);
3510                         if (txq_params.link_id >= 0 &&
3511                             !(netdev->ieee80211_ptr->valid_links &
3512                               BIT(txq_params.link_id)))
3513                                 result = -ENOLINK;
3514                         else if (txq_params.link_id >= 0 &&
3515                                  !netdev->ieee80211_ptr->valid_links)
3516                                 result = -EINVAL;
3517                         else
3518                                 result = rdev_set_txq_params(rdev, netdev,
3519                                                              &txq_params);
3520                         wdev_unlock(netdev->ieee80211_ptr);
3521                         if (result)
3522                                 goto out;
3523                 }
3524         }
3525
3526         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3527                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3528
3529                 if (wdev) {
3530                         wdev_lock(wdev);
3531                         result = __nl80211_set_channel(
3532                                 rdev,
3533                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3534                                 info, link_id);
3535                         wdev_unlock(wdev);
3536                 } else {
3537                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3538                 }
3539
3540                 if (result)
3541                         goto out;
3542         }
3543
3544         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3545                 struct wireless_dev *txp_wdev = wdev;
3546                 enum nl80211_tx_power_setting type;
3547                 int idx, mbm = 0;
3548
3549                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3550                         txp_wdev = NULL;
3551
3552                 if (!rdev->ops->set_tx_power) {
3553                         result = -EOPNOTSUPP;
3554                         goto out;
3555                 }
3556
3557                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3558                 type = nla_get_u32(info->attrs[idx]);
3559
3560                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3561                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3562                         result = -EINVAL;
3563                         goto out;
3564                 }
3565
3566                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3567                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3568                         mbm = nla_get_u32(info->attrs[idx]);
3569                 }
3570
3571                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3572                 if (result)
3573                         goto out;
3574         }
3575
3576         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3577             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3578                 u32 tx_ant, rx_ant;
3579
3580                 if ((!rdev->wiphy.available_antennas_tx &&
3581                      !rdev->wiphy.available_antennas_rx) ||
3582                     !rdev->ops->set_antenna) {
3583                         result = -EOPNOTSUPP;
3584                         goto out;
3585                 }
3586
3587                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3588                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3589
3590                 /* reject antenna configurations which don't match the
3591                  * available antenna masks, except for the "all" mask */
3592                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3593                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3594                         result = -EINVAL;
3595                         goto out;
3596                 }
3597
3598                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3599                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3600
3601                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3602                 if (result)
3603                         goto out;
3604         }
3605
3606         changed = 0;
3607
3608         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3609                 retry_short = nla_get_u8(
3610                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3611
3612                 changed |= WIPHY_PARAM_RETRY_SHORT;
3613         }
3614
3615         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3616                 retry_long = nla_get_u8(
3617                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3618
3619                 changed |= WIPHY_PARAM_RETRY_LONG;
3620         }
3621
3622         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3623                 frag_threshold = nla_get_u32(
3624                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3625                 if (frag_threshold < 256) {
3626                         result = -EINVAL;
3627                         goto out;
3628                 }
3629
3630                 if (frag_threshold != (u32) -1) {
3631                         /*
3632                          * Fragments (apart from the last one) are required to
3633                          * have even length. Make the fragmentation code
3634                          * simpler by stripping LSB should someone try to use
3635                          * odd threshold value.
3636                          */
3637                         frag_threshold &= ~0x1;
3638                 }
3639                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3640         }
3641
3642         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3643                 rts_threshold = nla_get_u32(
3644                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3645                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3646         }
3647
3648         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3649                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3650                         result = -EINVAL;
3651                         goto out;
3652                 }
3653
3654                 coverage_class = nla_get_u8(
3655                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3656                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3657         }
3658
3659         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3660                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3661                         result = -EOPNOTSUPP;
3662                         goto out;
3663                 }
3664
3665                 changed |= WIPHY_PARAM_DYN_ACK;
3666         }
3667
3668         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3669                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3670                                              NL80211_EXT_FEATURE_TXQS)) {
3671                         result = -EOPNOTSUPP;
3672                         goto out;
3673                 }
3674                 txq_limit = nla_get_u32(
3675                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3676                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3677         }
3678
3679         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3680                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3681                                              NL80211_EXT_FEATURE_TXQS)) {
3682                         result = -EOPNOTSUPP;
3683                         goto out;
3684                 }
3685                 txq_memory_limit = nla_get_u32(
3686                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3687                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3688         }
3689
3690         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3691                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3692                                              NL80211_EXT_FEATURE_TXQS)) {
3693                         result = -EOPNOTSUPP;
3694                         goto out;
3695                 }
3696                 txq_quantum = nla_get_u32(
3697                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3698                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3699         }
3700
3701         if (changed) {
3702                 u8 old_retry_short, old_retry_long;
3703                 u32 old_frag_threshold, old_rts_threshold;
3704                 u8 old_coverage_class;
3705                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3706
3707                 if (!rdev->ops->set_wiphy_params) {
3708                         result = -EOPNOTSUPP;
3709                         goto out;
3710                 }
3711
3712                 old_retry_short = rdev->wiphy.retry_short;
3713                 old_retry_long = rdev->wiphy.retry_long;
3714                 old_frag_threshold = rdev->wiphy.frag_threshold;
3715                 old_rts_threshold = rdev->wiphy.rts_threshold;
3716                 old_coverage_class = rdev->wiphy.coverage_class;
3717                 old_txq_limit = rdev->wiphy.txq_limit;
3718                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3719                 old_txq_quantum = rdev->wiphy.txq_quantum;
3720
3721                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3722                         rdev->wiphy.retry_short = retry_short;
3723                 if (changed & WIPHY_PARAM_RETRY_LONG)
3724                         rdev->wiphy.retry_long = retry_long;
3725                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3726                         rdev->wiphy.frag_threshold = frag_threshold;
3727                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3728                         rdev->wiphy.rts_threshold = rts_threshold;
3729                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3730                         rdev->wiphy.coverage_class = coverage_class;
3731                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3732                         rdev->wiphy.txq_limit = txq_limit;
3733                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3734                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3735                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3736                         rdev->wiphy.txq_quantum = txq_quantum;
3737
3738                 result = rdev_set_wiphy_params(rdev, changed);
3739                 if (result) {
3740                         rdev->wiphy.retry_short = old_retry_short;
3741                         rdev->wiphy.retry_long = old_retry_long;
3742                         rdev->wiphy.frag_threshold = old_frag_threshold;
3743                         rdev->wiphy.rts_threshold = old_rts_threshold;
3744                         rdev->wiphy.coverage_class = old_coverage_class;
3745                         rdev->wiphy.txq_limit = old_txq_limit;
3746                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3747                         rdev->wiphy.txq_quantum = old_txq_quantum;
3748                         goto out;
3749                 }
3750         }
3751
3752         result = 0;
3753
3754 out:
3755         wiphy_unlock(&rdev->wiphy);
3756         return result;
3757 }
3758
3759 static int nl80211_send_chandef(struct sk_buff *msg,
3760                                 const struct cfg80211_chan_def *chandef)
3761 {
3762         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3763                 return -EINVAL;
3764
3765         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3766                         chandef->chan->center_freq))
3767                 return -ENOBUFS;
3768         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3769                         chandef->chan->freq_offset))
3770                 return -ENOBUFS;
3771         switch (chandef->width) {
3772         case NL80211_CHAN_WIDTH_20_NOHT:
3773         case NL80211_CHAN_WIDTH_20:
3774         case NL80211_CHAN_WIDTH_40:
3775                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3776                                 cfg80211_get_chandef_type(chandef)))
3777                         return -ENOBUFS;
3778                 break;
3779         default:
3780                 break;
3781         }
3782         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3783                 return -ENOBUFS;
3784         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3785                 return -ENOBUFS;
3786         if (chandef->center_freq2 &&
3787             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3788                 return -ENOBUFS;
3789         return 0;
3790 }
3791
3792 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3793                               struct cfg80211_registered_device *rdev,
3794                               struct wireless_dev *wdev,
3795                               enum nl80211_commands cmd)
3796 {
3797         struct net_device *dev = wdev->netdev;
3798         void *hdr;
3799
3800         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3801                 cmd != NL80211_CMD_DEL_INTERFACE &&
3802                 cmd != NL80211_CMD_SET_INTERFACE);
3803
3804         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3805         if (!hdr)
3806                 return -1;
3807
3808         if (dev &&
3809             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3810              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3811                 goto nla_put_failure;
3812
3813         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3814             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3815             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3816                               NL80211_ATTR_PAD) ||
3817             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3818             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3819                         rdev->devlist_generation ^
3820                         (cfg80211_rdev_list_generation << 2)) ||
3821             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3822                 goto nla_put_failure;
3823
3824         if (rdev->ops->get_channel && !wdev->valid_links) {
3825                 struct cfg80211_chan_def chandef = {};
3826                 int ret;
3827
3828                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3829                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3830                         goto nla_put_failure;
3831         }
3832
3833         if (rdev->ops->get_tx_power) {
3834                 int dbm, ret;
3835
3836                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3837                 if (ret == 0 &&
3838                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3839                                 DBM_TO_MBM(dbm)))
3840                         goto nla_put_failure;
3841         }
3842
3843         wdev_lock(wdev);
3844         switch (wdev->iftype) {
3845         case NL80211_IFTYPE_AP:
3846         case NL80211_IFTYPE_P2P_GO:
3847                 if (wdev->u.ap.ssid_len &&
3848                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3849                             wdev->u.ap.ssid))
3850                         goto nla_put_failure_locked;
3851                 break;
3852         case NL80211_IFTYPE_STATION:
3853         case NL80211_IFTYPE_P2P_CLIENT:
3854                 if (wdev->u.client.ssid_len &&
3855                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3856                             wdev->u.client.ssid))
3857                         goto nla_put_failure_locked;
3858                 break;
3859         case NL80211_IFTYPE_ADHOC:
3860                 if (wdev->u.ibss.ssid_len &&
3861                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3862                             wdev->u.ibss.ssid))
3863                         goto nla_put_failure_locked;
3864                 break;
3865         default:
3866                 /* nothing */
3867                 break;
3868         }
3869         wdev_unlock(wdev);
3870
3871         if (rdev->ops->get_txq_stats) {
3872                 struct cfg80211_txq_stats txqstats = {};
3873                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3874
3875                 if (ret == 0 &&
3876                     !nl80211_put_txq_stats(msg, &txqstats,
3877                                            NL80211_ATTR_TXQ_STATS))
3878                         goto nla_put_failure;
3879         }
3880
3881         if (wdev->valid_links) {
3882                 unsigned int link_id;
3883                 struct nlattr *links = nla_nest_start(msg,
3884                                                       NL80211_ATTR_MLO_LINKS);
3885
3886                 if (!links)
3887                         goto nla_put_failure;
3888
3889                 for_each_valid_link(wdev, link_id) {
3890                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3891                         struct cfg80211_chan_def chandef = {};
3892                         int ret;
3893
3894                         if (!link)
3895                                 goto nla_put_failure;
3896
3897                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3898                                 goto nla_put_failure;
3899                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3900                                     wdev->links[link_id].addr))
3901                                 goto nla_put_failure;
3902
3903                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3904                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3905                                 goto nla_put_failure;
3906
3907                         nla_nest_end(msg, link);
3908                 }
3909
3910                 nla_nest_end(msg, links);
3911         }
3912
3913         genlmsg_end(msg, hdr);
3914         return 0;
3915
3916  nla_put_failure_locked:
3917         wdev_unlock(wdev);
3918  nla_put_failure:
3919         genlmsg_cancel(msg, hdr);
3920         return -EMSGSIZE;
3921 }
3922
3923 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3924 {
3925         int wp_idx = 0;
3926         int if_idx = 0;
3927         int wp_start = cb->args[0];
3928         int if_start = cb->args[1];
3929         int filter_wiphy = -1;
3930         struct cfg80211_registered_device *rdev;
3931         struct wireless_dev *wdev;
3932         int ret;
3933
3934         rtnl_lock();
3935         if (!cb->args[2]) {
3936                 struct nl80211_dump_wiphy_state state = {
3937                         .filter_wiphy = -1,
3938                 };
3939
3940                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3941                 if (ret)
3942                         goto out_unlock;
3943
3944                 filter_wiphy = state.filter_wiphy;
3945
3946                 /*
3947                  * if filtering, set cb->args[2] to +1 since 0 is the default
3948                  * value needed to determine that parsing is necessary.
3949                  */
3950                 if (filter_wiphy >= 0)
3951                         cb->args[2] = filter_wiphy + 1;
3952                 else
3953                         cb->args[2] = -1;
3954         } else if (cb->args[2] > 0) {
3955                 filter_wiphy = cb->args[2] - 1;
3956         }
3957
3958         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3959                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3960                         continue;
3961                 if (wp_idx < wp_start) {
3962                         wp_idx++;
3963                         continue;
3964                 }
3965
3966                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3967                         continue;
3968
3969                 if_idx = 0;
3970
3971                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3972                         if (if_idx < if_start) {
3973                                 if_idx++;
3974                                 continue;
3975                         }
3976                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3977                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3978                                                rdev, wdev,
3979                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3980                                 goto out;
3981                         }
3982                         if_idx++;
3983                 }
3984
3985                 wp_idx++;
3986         }
3987  out:
3988         cb->args[0] = wp_idx;
3989         cb->args[1] = if_idx;
3990
3991         ret = skb->len;
3992  out_unlock:
3993         rtnl_unlock();
3994
3995         return ret;
3996 }
3997
3998 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3999 {
4000         struct sk_buff *msg;
4001         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4002         struct wireless_dev *wdev = info->user_ptr[1];
4003
4004         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4005         if (!msg)
4006                 return -ENOMEM;
4007
4008         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4009                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4010                 nlmsg_free(msg);
4011                 return -ENOBUFS;
4012         }
4013
4014         return genlmsg_reply(msg, info);
4015 }
4016
4017 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4018         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4019         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4020         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4021         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4022         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4023         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4024 };
4025
4026 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4027 {
4028         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4029         int flag;
4030
4031         *mntrflags = 0;
4032
4033         if (!nla)
4034                 return -EINVAL;
4035
4036         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4037                 return -EINVAL;
4038
4039         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4040                 if (flags[flag])
4041                         *mntrflags |= (1<<flag);
4042
4043         *mntrflags |= MONITOR_FLAG_CHANGED;
4044
4045         return 0;
4046 }
4047
4048 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4049                                      enum nl80211_iftype type,
4050                                      struct genl_info *info,
4051                                      struct vif_params *params)
4052 {
4053         bool change = false;
4054         int err;
4055
4056         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4057                 if (type != NL80211_IFTYPE_MONITOR)
4058                         return -EINVAL;
4059
4060                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4061                                           &params->flags);
4062                 if (err)
4063                         return err;
4064
4065                 change = true;
4066         }
4067
4068         if (params->flags & MONITOR_FLAG_ACTIVE &&
4069             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4070                 return -EOPNOTSUPP;
4071
4072         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4073                 const u8 *mumimo_groups;
4074                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4075
4076                 if (type != NL80211_IFTYPE_MONITOR)
4077                         return -EINVAL;
4078
4079                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4080                         return -EOPNOTSUPP;
4081
4082                 mumimo_groups =
4083                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4084
4085                 /* bits 0 and 63 are reserved and must be zero */
4086                 if ((mumimo_groups[0] & BIT(0)) ||
4087                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4088                         return -EINVAL;
4089
4090                 params->vht_mumimo_groups = mumimo_groups;
4091                 change = true;
4092         }
4093
4094         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4095                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4096
4097                 if (type != NL80211_IFTYPE_MONITOR)
4098                         return -EINVAL;
4099
4100                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4101                         return -EOPNOTSUPP;
4102
4103                 params->vht_mumimo_follow_addr =
4104                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4105                 change = true;
4106         }
4107
4108         return change ? 1 : 0;
4109 }
4110
4111 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4112                                struct net_device *netdev, u8 use_4addr,
4113                                enum nl80211_iftype iftype)
4114 {
4115         if (!use_4addr) {
4116                 if (netdev && netif_is_bridge_port(netdev))
4117                         return -EBUSY;
4118                 return 0;
4119         }
4120
4121         switch (iftype) {
4122         case NL80211_IFTYPE_AP_VLAN:
4123                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4124                         return 0;
4125                 break;
4126         case NL80211_IFTYPE_STATION:
4127                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4128                         return 0;
4129                 break;
4130         default:
4131                 break;
4132         }
4133
4134         return -EOPNOTSUPP;
4135 }
4136
4137 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4138 {
4139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4140         struct vif_params params;
4141         int err;
4142         enum nl80211_iftype otype, ntype;
4143         struct net_device *dev = info->user_ptr[1];
4144         bool change = false;
4145
4146         memset(&params, 0, sizeof(params));
4147
4148         otype = ntype = dev->ieee80211_ptr->iftype;
4149
4150         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4151                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4152                 if (otype != ntype)
4153                         change = true;
4154         }
4155
4156         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4157                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4158
4159                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4160                         return -EINVAL;
4161                 if (netif_running(dev))
4162                         return -EBUSY;
4163
4164                 wdev_lock(wdev);
4165                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4166                              IEEE80211_MAX_MESH_ID_LEN);
4167                 wdev->u.mesh.id_up_len =
4168                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4169                 memcpy(wdev->u.mesh.id,
4170                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4171                        wdev->u.mesh.id_up_len);
4172                 wdev_unlock(wdev);
4173         }
4174
4175         if (info->attrs[NL80211_ATTR_4ADDR]) {
4176                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4177                 change = true;
4178                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4179                 if (err)
4180                         return err;
4181         } else {
4182                 params.use_4addr = -1;
4183         }
4184
4185         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4186         if (err < 0)
4187                 return err;
4188         if (err > 0)
4189                 change = true;
4190
4191         if (change)
4192                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4193         else
4194                 err = 0;
4195
4196         if (!err && params.use_4addr != -1)
4197                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4198
4199         if (change && !err) {
4200                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4201
4202                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4203         }
4204
4205         return err;
4206 }
4207
4208 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4209 {
4210         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4211         struct vif_params params;
4212         struct wireless_dev *wdev;
4213         struct sk_buff *msg;
4214         int err;
4215         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4216
4217         memset(&params, 0, sizeof(params));
4218
4219         if (!info->attrs[NL80211_ATTR_IFNAME])
4220                 return -EINVAL;
4221
4222         if (info->attrs[NL80211_ATTR_IFTYPE])
4223                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4224
4225         if (!rdev->ops->add_virtual_intf)
4226                 return -EOPNOTSUPP;
4227
4228         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4229              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4230             info->attrs[NL80211_ATTR_MAC]) {
4231                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4232                            ETH_ALEN);
4233                 if (!is_valid_ether_addr(params.macaddr))
4234                         return -EADDRNOTAVAIL;
4235         }
4236
4237         if (info->attrs[NL80211_ATTR_4ADDR]) {
4238                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4239                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4240                 if (err)
4241                         return err;
4242         }
4243
4244         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4245                 return -EOPNOTSUPP;
4246
4247         err = nl80211_parse_mon_options(rdev, type, info, &params);
4248         if (err < 0)
4249                 return err;
4250
4251         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4252         if (!msg)
4253                 return -ENOMEM;
4254
4255         wdev = rdev_add_virtual_intf(rdev,
4256                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4257                                 NET_NAME_USER, type, &params);
4258         if (WARN_ON(!wdev)) {
4259                 nlmsg_free(msg);
4260                 return -EPROTO;
4261         } else if (IS_ERR(wdev)) {
4262                 nlmsg_free(msg);
4263                 return PTR_ERR(wdev);
4264         }
4265
4266         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4267                 wdev->owner_nlportid = info->snd_portid;
4268
4269         switch (type) {
4270         case NL80211_IFTYPE_MESH_POINT:
4271                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4272                         break;
4273                 wdev_lock(wdev);
4274                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4275                              IEEE80211_MAX_MESH_ID_LEN);
4276                 wdev->u.mesh.id_up_len =
4277                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4278                 memcpy(wdev->u.mesh.id,
4279                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4280                        wdev->u.mesh.id_up_len);
4281                 wdev_unlock(wdev);
4282                 break;
4283         case NL80211_IFTYPE_NAN:
4284         case NL80211_IFTYPE_P2P_DEVICE:
4285                 /*
4286                  * P2P Device and NAN do not have a netdev, so don't go
4287                  * through the netdev notifier and must be added here
4288                  */
4289                 cfg80211_init_wdev(wdev);
4290                 cfg80211_register_wdev(rdev, wdev);
4291                 break;
4292         default:
4293                 break;
4294         }
4295
4296         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4297                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4298                 nlmsg_free(msg);
4299                 return -ENOBUFS;
4300         }
4301
4302         return genlmsg_reply(msg, info);
4303 }
4304
4305 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4306 {
4307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4308         int ret;
4309
4310         /* to avoid failing a new interface creation due to pending removal */
4311         cfg80211_destroy_ifaces(rdev);
4312
4313         wiphy_lock(&rdev->wiphy);
4314         ret = _nl80211_new_interface(skb, info);
4315         wiphy_unlock(&rdev->wiphy);
4316
4317         return ret;
4318 }
4319
4320 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4321 {
4322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4323         struct wireless_dev *wdev = info->user_ptr[1];
4324
4325         if (!rdev->ops->del_virtual_intf)
4326                 return -EOPNOTSUPP;
4327
4328         /*
4329          * We hold RTNL, so this is safe, without RTNL opencount cannot
4330          * reach 0, and thus the rdev cannot be deleted.
4331          *
4332          * We need to do it for the dev_close(), since that will call
4333          * the netdev notifiers, and we need to acquire the mutex there
4334          * but don't know if we get there from here or from some other
4335          * place (e.g. "ip link set ... down").
4336          */
4337         mutex_unlock(&rdev->wiphy.mtx);
4338
4339         /*
4340          * If we remove a wireless device without a netdev then clear
4341          * user_ptr[1] so that nl80211_post_doit won't dereference it
4342          * to check if it needs to do dev_put(). Otherwise it crashes
4343          * since the wdev has been freed, unlike with a netdev where
4344          * we need the dev_put() for the netdev to really be freed.
4345          */
4346         if (!wdev->netdev)
4347                 info->user_ptr[1] = NULL;
4348         else
4349                 dev_close(wdev->netdev);
4350
4351         mutex_lock(&rdev->wiphy.mtx);
4352
4353         return cfg80211_remove_virtual_intf(rdev, wdev);
4354 }
4355
4356 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4357 {
4358         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4359         struct net_device *dev = info->user_ptr[1];
4360         u16 noack_map;
4361
4362         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4363                 return -EINVAL;
4364
4365         if (!rdev->ops->set_noack_map)
4366                 return -EOPNOTSUPP;
4367
4368         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4369
4370         return rdev_set_noack_map(rdev, dev, noack_map);
4371 }
4372
4373 static int nl80211_validate_key_link_id(struct genl_info *info,
4374                                         struct wireless_dev *wdev,
4375                                         int link_id, bool pairwise)
4376 {
4377         if (pairwise) {
4378                 if (link_id != -1) {
4379                         GENL_SET_ERR_MSG(info,
4380                                          "link ID not allowed for pairwise key");
4381                         return -EINVAL;
4382                 }
4383
4384                 return 0;
4385         }
4386
4387         if (wdev->valid_links) {
4388                 if (link_id == -1) {
4389                         GENL_SET_ERR_MSG(info,
4390                                          "link ID must for MLO group key");
4391                         return -EINVAL;
4392                 }
4393                 if (!(wdev->valid_links & BIT(link_id))) {
4394                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4395                         return -EINVAL;
4396                 }
4397         } else if (link_id != -1) {
4398                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4399                 return -EINVAL;
4400         }
4401
4402         return 0;
4403 }
4404
4405 struct get_key_cookie {
4406         struct sk_buff *msg;
4407         int error;
4408         int idx;
4409 };
4410
4411 static void get_key_callback(void *c, struct key_params *params)
4412 {
4413         struct nlattr *key;
4414         struct get_key_cookie *cookie = c;
4415
4416         if ((params->key &&
4417              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4418                      params->key_len, params->key)) ||
4419             (params->seq &&
4420              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4421                      params->seq_len, params->seq)) ||
4422             (params->cipher &&
4423              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4424                          params->cipher)))
4425                 goto nla_put_failure;
4426
4427         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4428         if (!key)
4429                 goto nla_put_failure;
4430
4431         if ((params->key &&
4432              nla_put(cookie->msg, NL80211_KEY_DATA,
4433                      params->key_len, params->key)) ||
4434             (params->seq &&
4435              nla_put(cookie->msg, NL80211_KEY_SEQ,
4436                      params->seq_len, params->seq)) ||
4437             (params->cipher &&
4438              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4439                          params->cipher)))
4440                 goto nla_put_failure;
4441
4442         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4443                 goto nla_put_failure;
4444
4445         nla_nest_end(cookie->msg, key);
4446
4447         return;
4448  nla_put_failure:
4449         cookie->error = 1;
4450 }
4451
4452 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4453 {
4454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4455         int err;
4456         struct net_device *dev = info->user_ptr[1];
4457         u8 key_idx = 0;
4458         const u8 *mac_addr = NULL;
4459         bool pairwise;
4460         struct get_key_cookie cookie = {
4461                 .error = 0,
4462         };
4463         void *hdr;
4464         struct sk_buff *msg;
4465         bool bigtk_support = false;
4466         int link_id = nl80211_link_id_or_invalid(info->attrs);
4467         struct wireless_dev *wdev = dev->ieee80211_ptr;
4468
4469         if (wiphy_ext_feature_isset(&rdev->wiphy,
4470                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4471                 bigtk_support = true;
4472
4473         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4474              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4475             wiphy_ext_feature_isset(&rdev->wiphy,
4476                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4477                 bigtk_support = true;
4478
4479         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4480                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4481
4482                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4483                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4484                         return -EINVAL;
4485                 }
4486         }
4487
4488         if (info->attrs[NL80211_ATTR_MAC])
4489                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4490
4491         pairwise = !!mac_addr;
4492         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4493                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4494
4495                 if (kt != NL80211_KEYTYPE_GROUP &&
4496                     kt != NL80211_KEYTYPE_PAIRWISE)
4497                         return -EINVAL;
4498                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4499         }
4500
4501         if (!rdev->ops->get_key)
4502                 return -EOPNOTSUPP;
4503
4504         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4505                 return -ENOENT;
4506
4507         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4508         if (!msg)
4509                 return -ENOMEM;
4510
4511         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4512                              NL80211_CMD_NEW_KEY);
4513         if (!hdr)
4514                 goto nla_put_failure;
4515
4516         cookie.msg = msg;
4517         cookie.idx = key_idx;
4518
4519         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4520             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4521                 goto nla_put_failure;
4522         if (mac_addr &&
4523             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4524                 goto nla_put_failure;
4525
4526         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4527         if (err)
4528                 goto free_msg;
4529
4530         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4531                            &cookie, get_key_callback);
4532
4533         if (err)
4534                 goto free_msg;
4535
4536         if (cookie.error)
4537                 goto nla_put_failure;
4538
4539         genlmsg_end(msg, hdr);
4540         return genlmsg_reply(msg, info);
4541
4542  nla_put_failure:
4543         err = -ENOBUFS;
4544  free_msg:
4545         nlmsg_free(msg);
4546         return err;
4547 }
4548
4549 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4550 {
4551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4552         struct key_parse key;
4553         int err;
4554         struct net_device *dev = info->user_ptr[1];
4555         int link_id = nl80211_link_id_or_invalid(info->attrs);
4556         struct wireless_dev *wdev = dev->ieee80211_ptr;
4557
4558         err = nl80211_parse_key(info, &key);
4559         if (err)
4560                 return err;
4561
4562         if (key.idx < 0)
4563                 return -EINVAL;
4564
4565         /* Only support setting default key and
4566          * Extended Key ID action NL80211_KEY_SET_TX.
4567          */
4568         if (!key.def && !key.defmgmt && !key.defbeacon &&
4569             !(key.p.mode == NL80211_KEY_SET_TX))
4570                 return -EINVAL;
4571
4572         wdev_lock(wdev);
4573
4574         if (key.def) {
4575                 if (!rdev->ops->set_default_key) {
4576                         err = -EOPNOTSUPP;
4577                         goto out;
4578                 }
4579
4580                 err = nl80211_key_allowed(wdev);
4581                 if (err)
4582                         goto out;
4583
4584                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4585                 if (err)
4586                         goto out;
4587
4588                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4589                                            key.def_uni, key.def_multi);
4590
4591                 if (err)
4592                         goto out;
4593
4594 #ifdef CONFIG_CFG80211_WEXT
4595                 wdev->wext.default_key = key.idx;
4596 #endif
4597         } else if (key.defmgmt) {
4598                 if (key.def_uni || !key.def_multi) {
4599                         err = -EINVAL;
4600                         goto out;
4601                 }
4602
4603                 if (!rdev->ops->set_default_mgmt_key) {
4604                         err = -EOPNOTSUPP;
4605                         goto out;
4606                 }
4607
4608                 err = nl80211_key_allowed(wdev);
4609                 if (err)
4610                         goto out;
4611
4612                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4613                 if (err)
4614                         goto out;
4615
4616                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4617                 if (err)
4618                         goto out;
4619
4620 #ifdef CONFIG_CFG80211_WEXT
4621                 wdev->wext.default_mgmt_key = key.idx;
4622 #endif
4623         } else if (key.defbeacon) {
4624                 if (key.def_uni || !key.def_multi) {
4625                         err = -EINVAL;
4626                         goto out;
4627                 }
4628
4629                 if (!rdev->ops->set_default_beacon_key) {
4630                         err = -EOPNOTSUPP;
4631                         goto out;
4632                 }
4633
4634                 err = nl80211_key_allowed(wdev);
4635                 if (err)
4636                         goto out;
4637
4638                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4639                 if (err)
4640                         goto out;
4641
4642                 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4643                 if (err)
4644                         goto out;
4645         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4646                    wiphy_ext_feature_isset(&rdev->wiphy,
4647                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4648                 u8 *mac_addr = NULL;
4649
4650                 if (info->attrs[NL80211_ATTR_MAC])
4651                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4652
4653                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4654                         err = -EINVAL;
4655                         goto out;
4656                 }
4657
4658                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4659                 if (err)
4660                         goto out;
4661
4662                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4663                                    NL80211_KEYTYPE_PAIRWISE,
4664                                    mac_addr, &key.p);
4665         } else {
4666                 err = -EINVAL;
4667         }
4668  out:
4669         wdev_unlock(wdev);
4670
4671         return err;
4672 }
4673
4674 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4675 {
4676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4677         int err;
4678         struct net_device *dev = info->user_ptr[1];
4679         struct key_parse key;
4680         const u8 *mac_addr = NULL;
4681         int link_id = nl80211_link_id_or_invalid(info->attrs);
4682         struct wireless_dev *wdev = dev->ieee80211_ptr;
4683
4684         err = nl80211_parse_key(info, &key);
4685         if (err)
4686                 return err;
4687
4688         if (!key.p.key) {
4689                 GENL_SET_ERR_MSG(info, "no key");
4690                 return -EINVAL;
4691         }
4692
4693         if (info->attrs[NL80211_ATTR_MAC])
4694                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4695
4696         if (key.type == -1) {
4697                 if (mac_addr)
4698                         key.type = NL80211_KEYTYPE_PAIRWISE;
4699                 else
4700                         key.type = NL80211_KEYTYPE_GROUP;
4701         }
4702
4703         /* for now */
4704         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4705             key.type != NL80211_KEYTYPE_GROUP) {
4706                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4707                 return -EINVAL;
4708         }
4709
4710         if (key.type == NL80211_KEYTYPE_GROUP &&
4711             info->attrs[NL80211_ATTR_VLAN_ID])
4712                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4713
4714         if (!rdev->ops->add_key)
4715                 return -EOPNOTSUPP;
4716
4717         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4718                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4719                                            mac_addr)) {
4720                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4721                 return -EINVAL;
4722         }
4723
4724         wdev_lock(wdev);
4725         err = nl80211_key_allowed(wdev);
4726         if (err)
4727                 GENL_SET_ERR_MSG(info, "key not allowed");
4728
4729         if (!err)
4730                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4731                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4732
4733         if (!err) {
4734                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4735                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4736                                     mac_addr, &key.p);
4737                 if (err)
4738                         GENL_SET_ERR_MSG(info, "key addition failed");
4739         }
4740         wdev_unlock(wdev);
4741
4742         return err;
4743 }
4744
4745 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4746 {
4747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4748         int err;
4749         struct net_device *dev = info->user_ptr[1];
4750         u8 *mac_addr = NULL;
4751         struct key_parse key;
4752         int link_id = nl80211_link_id_or_invalid(info->attrs);
4753         struct wireless_dev *wdev = dev->ieee80211_ptr;
4754
4755         err = nl80211_parse_key(info, &key);
4756         if (err)
4757                 return err;
4758
4759         if (info->attrs[NL80211_ATTR_MAC])
4760                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4761
4762         if (key.type == -1) {
4763                 if (mac_addr)
4764                         key.type = NL80211_KEYTYPE_PAIRWISE;
4765                 else
4766                         key.type = NL80211_KEYTYPE_GROUP;
4767         }
4768
4769         /* for now */
4770         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4771             key.type != NL80211_KEYTYPE_GROUP)
4772                 return -EINVAL;
4773
4774         if (!cfg80211_valid_key_idx(rdev, key.idx,
4775                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4776                 return -EINVAL;
4777
4778         if (!rdev->ops->del_key)
4779                 return -EOPNOTSUPP;
4780
4781         wdev_lock(wdev);
4782         err = nl80211_key_allowed(wdev);
4783
4784         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4785             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4786                 err = -ENOENT;
4787
4788         if (!err)
4789                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4790                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4791
4792         if (!err)
4793                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4794                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4795                                    mac_addr);
4796
4797 #ifdef CONFIG_CFG80211_WEXT
4798         if (!err) {
4799                 if (key.idx == wdev->wext.default_key)
4800                         wdev->wext.default_key = -1;
4801                 else if (key.idx == wdev->wext.default_mgmt_key)
4802                         wdev->wext.default_mgmt_key = -1;
4803         }
4804 #endif
4805         wdev_unlock(wdev);
4806
4807         return err;
4808 }
4809
4810 /* This function returns an error or the number of nested attributes */
4811 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4812 {
4813         struct nlattr *attr;
4814         int n_entries = 0, tmp;
4815
4816         nla_for_each_nested(attr, nl_attr, tmp) {
4817                 if (nla_len(attr) != ETH_ALEN)
4818                         return -EINVAL;
4819
4820                 n_entries++;
4821         }
4822
4823         return n_entries;
4824 }
4825
4826 /*
4827  * This function parses ACL information and allocates memory for ACL data.
4828  * On successful return, the calling function is responsible to free the
4829  * ACL buffer returned by this function.
4830  */
4831 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4832                                                 struct genl_info *info)
4833 {
4834         enum nl80211_acl_policy acl_policy;
4835         struct nlattr *attr;
4836         struct cfg80211_acl_data *acl;
4837         int i = 0, n_entries, tmp;
4838
4839         if (!wiphy->max_acl_mac_addrs)
4840                 return ERR_PTR(-EOPNOTSUPP);
4841
4842         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4843                 return ERR_PTR(-EINVAL);
4844
4845         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4846         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4847             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4848                 return ERR_PTR(-EINVAL);
4849
4850         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4851                 return ERR_PTR(-EINVAL);
4852
4853         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4854         if (n_entries < 0)
4855                 return ERR_PTR(n_entries);
4856
4857         if (n_entries > wiphy->max_acl_mac_addrs)
4858                 return ERR_PTR(-ENOTSUPP);
4859
4860         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4861         if (!acl)
4862                 return ERR_PTR(-ENOMEM);
4863
4864         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4865                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4866                 i++;
4867         }
4868
4869         acl->n_acl_entries = n_entries;
4870         acl->acl_policy = acl_policy;
4871
4872         return acl;
4873 }
4874
4875 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4876 {
4877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4878         struct net_device *dev = info->user_ptr[1];
4879         struct cfg80211_acl_data *acl;
4880         int err;
4881
4882         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4883             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4884                 return -EOPNOTSUPP;
4885
4886         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4887                 return -EINVAL;
4888
4889         acl = parse_acl_data(&rdev->wiphy, info);
4890         if (IS_ERR(acl))
4891                 return PTR_ERR(acl);
4892
4893         err = rdev_set_mac_acl(rdev, dev, acl);
4894
4895         kfree(acl);
4896
4897         return err;
4898 }
4899
4900 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4901                            u8 *rates, u8 rates_len)
4902 {
4903         u8 i;
4904         u32 mask = 0;
4905
4906         for (i = 0; i < rates_len; i++) {
4907                 int rate = (rates[i] & 0x7f) * 5;
4908                 int ridx;
4909
4910                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4911                         struct ieee80211_rate *srate =
4912                                 &sband->bitrates[ridx];
4913                         if (rate == srate->bitrate) {
4914                                 mask |= 1 << ridx;
4915                                 break;
4916                         }
4917                 }
4918                 if (ridx == sband->n_bitrates)
4919                         return 0; /* rate not found */
4920         }
4921
4922         return mask;
4923 }
4924
4925 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4926                                u8 *rates, u8 rates_len,
4927                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4928 {
4929         u8 i;
4930
4931         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4932
4933         for (i = 0; i < rates_len; i++) {
4934                 int ridx, rbit;
4935
4936                 ridx = rates[i] / 8;
4937                 rbit = BIT(rates[i] % 8);
4938
4939                 /* check validity */
4940                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4941                         return false;
4942
4943                 /* check availability */
4944                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4945                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4946                         mcs[ridx] |= rbit;
4947                 else
4948                         return false;
4949         }
4950
4951         return true;
4952 }
4953
4954 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4955 {
4956         u16 mcs_mask = 0;
4957
4958         switch (vht_mcs_map) {
4959         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4960                 break;
4961         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4962                 mcs_mask = 0x00FF;
4963                 break;
4964         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4965                 mcs_mask = 0x01FF;
4966                 break;
4967         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4968                 mcs_mask = 0x03FF;
4969                 break;
4970         default:
4971                 break;
4972         }
4973
4974         return mcs_mask;
4975 }
4976
4977 static void vht_build_mcs_mask(u16 vht_mcs_map,
4978                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4979 {
4980         u8 nss;
4981
4982         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4983                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4984                 vht_mcs_map >>= 2;
4985         }
4986 }
4987
4988 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4989                              struct nl80211_txrate_vht *txrate,
4990                              u16 mcs[NL80211_VHT_NSS_MAX])
4991 {
4992         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4993         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4994         u8 i;
4995
4996         if (!sband->vht_cap.vht_supported)
4997                 return false;
4998
4999         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5000
5001         /* Build vht_mcs_mask from VHT capabilities */
5002         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5003
5004         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5005                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5006                         mcs[i] = txrate->mcs[i];
5007                 else
5008                         return false;
5009         }
5010
5011         return true;
5012 }
5013
5014 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5015 {
5016         switch (he_mcs_map) {
5017         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5018                 return 0;
5019         case IEEE80211_HE_MCS_SUPPORT_0_7:
5020                 return 0x00FF;
5021         case IEEE80211_HE_MCS_SUPPORT_0_9:
5022                 return 0x03FF;
5023         case IEEE80211_HE_MCS_SUPPORT_0_11:
5024                 return 0xFFF;
5025         default:
5026                 break;
5027         }
5028         return 0;
5029 }
5030
5031 static void he_build_mcs_mask(u16 he_mcs_map,
5032                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5033 {
5034         u8 nss;
5035
5036         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5037                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5038                 he_mcs_map >>= 2;
5039         }
5040 }
5041
5042 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5043                            const struct ieee80211_sta_he_cap *he_cap)
5044 {
5045         struct net_device *dev = info->user_ptr[1];
5046         struct wireless_dev *wdev = dev->ieee80211_ptr;
5047         struct cfg80211_chan_def *chandef;
5048         __le16 tx_mcs;
5049
5050         chandef = wdev_chandef(wdev, link_id);
5051         if (!chandef) {
5052                 /*
5053                  * This is probably broken, but we never maintained
5054                  * a chandef in these cases, so it always was.
5055                  */
5056                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5057         }
5058
5059         switch (chandef->width) {
5060         case NL80211_CHAN_WIDTH_80P80:
5061                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5062                 break;
5063         case NL80211_CHAN_WIDTH_160:
5064                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5065                 break;
5066         default:
5067                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5068                 break;
5069         }
5070
5071         return le16_to_cpu(tx_mcs);
5072 }
5073
5074 static bool he_set_mcs_mask(struct genl_info *info,
5075                             struct wireless_dev *wdev,
5076                             struct ieee80211_supported_band *sband,
5077                             struct nl80211_txrate_he *txrate,
5078                             u16 mcs[NL80211_HE_NSS_MAX],
5079                             unsigned int link_id)
5080 {
5081         const struct ieee80211_sta_he_cap *he_cap;
5082         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5083         u16 tx_mcs_map = 0;
5084         u8 i;
5085
5086         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5087         if (!he_cap)
5088                 return false;
5089
5090         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5091
5092         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5093
5094         /* Build he_mcs_mask from HE capabilities */
5095         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5096
5097         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5098                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5099                         mcs[i] = txrate->mcs[i];
5100                 else
5101                         return false;
5102         }
5103
5104         return true;
5105 }
5106
5107 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5108                                          struct nlattr *attrs[],
5109                                          enum nl80211_attrs attr,
5110                                          struct cfg80211_bitrate_mask *mask,
5111                                          struct net_device *dev,
5112                                          bool default_all_enabled,
5113                                          unsigned int link_id)
5114 {
5115         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5117         struct wireless_dev *wdev = dev->ieee80211_ptr;
5118         int rem, i;
5119         struct nlattr *tx_rates;
5120         struct ieee80211_supported_band *sband;
5121         u16 vht_tx_mcs_map, he_tx_mcs_map;
5122
5123         memset(mask, 0, sizeof(*mask));
5124         /* Default to all rates enabled */
5125         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5126                 const struct ieee80211_sta_he_cap *he_cap;
5127
5128                 if (!default_all_enabled)
5129                         break;
5130
5131                 sband = rdev->wiphy.bands[i];
5132
5133                 if (!sband)
5134                         continue;
5135
5136                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5137                 memcpy(mask->control[i].ht_mcs,
5138                        sband->ht_cap.mcs.rx_mask,
5139                        sizeof(mask->control[i].ht_mcs));
5140
5141                 if (sband->vht_cap.vht_supported) {
5142                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5143                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5144                 }
5145
5146                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5147                 if (!he_cap)
5148                         continue;
5149
5150                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5151                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5152
5153                 mask->control[i].he_gi = 0xFF;
5154                 mask->control[i].he_ltf = 0xFF;
5155         }
5156
5157         /* if no rates are given set it back to the defaults */
5158         if (!attrs[attr])
5159                 goto out;
5160
5161         /* The nested attribute uses enum nl80211_band as the index. This maps
5162          * directly to the enum nl80211_band values used in cfg80211.
5163          */
5164         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5165         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5166                 enum nl80211_band band = nla_type(tx_rates);
5167                 int err;
5168
5169                 if (band < 0 || band >= NUM_NL80211_BANDS)
5170                         return -EINVAL;
5171                 sband = rdev->wiphy.bands[band];
5172                 if (sband == NULL)
5173                         return -EINVAL;
5174                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5175                                                   tx_rates,
5176                                                   nl80211_txattr_policy,
5177                                                   info->extack);
5178                 if (err)
5179                         return err;
5180                 if (tb[NL80211_TXRATE_LEGACY]) {
5181                         mask->control[band].legacy = rateset_to_mask(
5182                                 sband,
5183                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5184                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5185                         if ((mask->control[band].legacy == 0) &&
5186                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5187                                 return -EINVAL;
5188                 }
5189                 if (tb[NL80211_TXRATE_HT]) {
5190                         if (!ht_rateset_to_mask(
5191                                         sband,
5192                                         nla_data(tb[NL80211_TXRATE_HT]),
5193                                         nla_len(tb[NL80211_TXRATE_HT]),
5194                                         mask->control[band].ht_mcs))
5195                                 return -EINVAL;
5196                 }
5197
5198                 if (tb[NL80211_TXRATE_VHT]) {
5199                         if (!vht_set_mcs_mask(
5200                                         sband,
5201                                         nla_data(tb[NL80211_TXRATE_VHT]),
5202                                         mask->control[band].vht_mcs))
5203                                 return -EINVAL;
5204                 }
5205
5206                 if (tb[NL80211_TXRATE_GI]) {
5207                         mask->control[band].gi =
5208                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5209                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5210                                 return -EINVAL;
5211                 }
5212                 if (tb[NL80211_TXRATE_HE] &&
5213                     !he_set_mcs_mask(info, wdev, sband,
5214                                      nla_data(tb[NL80211_TXRATE_HE]),
5215                                      mask->control[band].he_mcs,
5216                                      link_id))
5217                         return -EINVAL;
5218
5219                 if (tb[NL80211_TXRATE_HE_GI])
5220                         mask->control[band].he_gi =
5221                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5222                 if (tb[NL80211_TXRATE_HE_LTF])
5223                         mask->control[band].he_ltf =
5224                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5225
5226                 if (mask->control[band].legacy == 0) {
5227                         /* don't allow empty legacy rates if HT, VHT or HE
5228                          * are not even supported.
5229                          */
5230                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5231                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5232                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5233                                 return -EINVAL;
5234
5235                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5236                                 if (mask->control[band].ht_mcs[i])
5237                                         goto out;
5238
5239                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5240                                 if (mask->control[band].vht_mcs[i])
5241                                         goto out;
5242
5243                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5244                                 if (mask->control[band].he_mcs[i])
5245                                         goto out;
5246
5247                         /* legacy and mcs rates may not be both empty */
5248                         return -EINVAL;
5249                 }
5250         }
5251
5252 out:
5253         return 0;
5254 }
5255
5256 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5257                                    enum nl80211_band band,
5258                                    struct cfg80211_bitrate_mask *beacon_rate)
5259 {
5260         u32 count_ht, count_vht, count_he, i;
5261         u32 rate = beacon_rate->control[band].legacy;
5262
5263         /* Allow only one rate */
5264         if (hweight32(rate) > 1)
5265                 return -EINVAL;
5266
5267         count_ht = 0;
5268         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5269                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5270                         return -EINVAL;
5271                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5272                         count_ht++;
5273                         if (count_ht > 1)
5274                                 return -EINVAL;
5275                 }
5276                 if (count_ht && rate)
5277                         return -EINVAL;
5278         }
5279
5280         count_vht = 0;
5281         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5282                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5283                         return -EINVAL;
5284                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5285                         count_vht++;
5286                         if (count_vht > 1)
5287                                 return -EINVAL;
5288                 }
5289                 if (count_vht && rate)
5290                         return -EINVAL;
5291         }
5292
5293         count_he = 0;
5294         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5295                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5296                         return -EINVAL;
5297                 } else if (beacon_rate->control[band].he_mcs[i]) {
5298                         count_he++;
5299                         if (count_he > 1)
5300                                 return -EINVAL;
5301                 }
5302                 if (count_he && rate)
5303                         return -EINVAL;
5304         }
5305
5306         if ((count_ht && count_vht && count_he) ||
5307             (!rate && !count_ht && !count_vht && !count_he))
5308                 return -EINVAL;
5309
5310         if (rate &&
5311             !wiphy_ext_feature_isset(&rdev->wiphy,
5312                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5313                 return -EINVAL;
5314         if (count_ht &&
5315             !wiphy_ext_feature_isset(&rdev->wiphy,
5316                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5317                 return -EINVAL;
5318         if (count_vht &&
5319             !wiphy_ext_feature_isset(&rdev->wiphy,
5320                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5321                 return -EINVAL;
5322         if (count_he &&
5323             !wiphy_ext_feature_isset(&rdev->wiphy,
5324                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5325                 return -EINVAL;
5326
5327         return 0;
5328 }
5329
5330 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5331                                        struct net_device *dev,
5332                                        struct nlattr *attrs,
5333                                        struct cfg80211_mbssid_config *config,
5334                                        u8 num_elems)
5335 {
5336         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5337
5338         if (!wiphy->mbssid_max_interfaces)
5339                 return -EOPNOTSUPP;
5340
5341         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5342                              NULL) ||
5343             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5344                 return -EINVAL;
5345
5346         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5347         if (config->ema) {
5348                 if (!wiphy->ema_max_profile_periodicity)
5349                         return -EOPNOTSUPP;
5350
5351                 if (num_elems > wiphy->ema_max_profile_periodicity)
5352                         return -EINVAL;
5353         }
5354
5355         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5356         if (config->index >= wiphy->mbssid_max_interfaces ||
5357             (!config->index && !num_elems))
5358                 return -EINVAL;
5359
5360         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5361                 u32 tx_ifindex =
5362                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5363
5364                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5365                     (config->index && tx_ifindex == dev->ifindex))
5366                         return -EINVAL;
5367
5368                 if (tx_ifindex != dev->ifindex) {
5369                         struct net_device *tx_netdev =
5370                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5371
5372                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5373                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5374                             tx_netdev->ieee80211_ptr->iftype !=
5375                                                         NL80211_IFTYPE_AP) {
5376                                 dev_put(tx_netdev);
5377                                 return -EINVAL;
5378                         }
5379
5380                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5381                 } else {
5382                         config->tx_wdev = dev->ieee80211_ptr;
5383                 }
5384         } else if (!config->index) {
5385                 config->tx_wdev = dev->ieee80211_ptr;
5386         } else {
5387                 return -EINVAL;
5388         }
5389
5390         return 0;
5391 }
5392
5393 static struct cfg80211_mbssid_elems *
5394 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5395 {
5396         struct nlattr *nl_elems;
5397         struct cfg80211_mbssid_elems *elems;
5398         int rem_elems;
5399         u8 i = 0, num_elems = 0;
5400
5401         if (!wiphy->mbssid_max_interfaces)
5402                 return ERR_PTR(-EINVAL);
5403
5404         nla_for_each_nested(nl_elems, attrs, rem_elems)
5405                 num_elems++;
5406
5407         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5408         if (!elems)
5409                 return ERR_PTR(-ENOMEM);
5410
5411         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5412                 elems->elem[i].data = nla_data(nl_elems);
5413                 elems->elem[i].len = nla_len(nl_elems);
5414                 i++;
5415         }
5416         elems->cnt = num_elems;
5417         return elems;
5418 }
5419
5420 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5421                                       struct cfg80211_he_bss_color *he_bss_color)
5422 {
5423         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5424         int err;
5425
5426         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5427                                he_bss_color_policy, NULL);
5428         if (err)
5429                 return err;
5430
5431         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5432                 return -EINVAL;
5433
5434         he_bss_color->color =
5435                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5436         he_bss_color->enabled =
5437                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5438         he_bss_color->partial =
5439                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5440
5441         return 0;
5442 }
5443
5444 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5445                                 struct nlattr *attrs[],
5446                                 struct cfg80211_beacon_data *bcn)
5447 {
5448         bool haveinfo = false;
5449         int err;
5450
5451         memset(bcn, 0, sizeof(*bcn));
5452
5453         bcn->link_id = nl80211_link_id(attrs);
5454
5455         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5456                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5457                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5458                 if (!bcn->head_len)
5459                         return -EINVAL;
5460                 haveinfo = true;
5461         }
5462
5463         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5464                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5465                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5466                 haveinfo = true;
5467         }
5468
5469         if (!haveinfo)
5470                 return -EINVAL;
5471
5472         if (attrs[NL80211_ATTR_IE]) {
5473                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5474                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5475         }
5476
5477         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5478                 bcn->proberesp_ies =
5479                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5480                 bcn->proberesp_ies_len =
5481                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5482         }
5483
5484         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5485                 bcn->assocresp_ies =
5486                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5487                 bcn->assocresp_ies_len =
5488                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5489         }
5490
5491         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5492                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5493                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5494         }
5495
5496         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5497                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5498
5499                 err = nla_parse_nested_deprecated(tb,
5500                                                   NL80211_FTM_RESP_ATTR_MAX,
5501                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5502                                                   NULL, NULL);
5503                 if (err)
5504                         return err;
5505
5506                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5507                     wiphy_ext_feature_isset(&rdev->wiphy,
5508                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5509                         bcn->ftm_responder = 1;
5510                 else
5511                         return -EOPNOTSUPP;
5512
5513                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5514                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5515                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5516                 }
5517
5518                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5519                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5520                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5521                 }
5522         } else {
5523                 bcn->ftm_responder = -1;
5524         }
5525
5526         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5527                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5528                                                  &bcn->he_bss_color);
5529                 if (err)
5530                         return err;
5531                 bcn->he_bss_color_valid = true;
5532         }
5533
5534         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5535                 struct cfg80211_mbssid_elems *mbssid =
5536                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5537                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5538
5539                 if (IS_ERR(mbssid))
5540                         return PTR_ERR(mbssid);
5541
5542                 bcn->mbssid_ies = mbssid;
5543         }
5544
5545         return 0;
5546 }
5547
5548 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5549                                     struct ieee80211_he_obss_pd *he_obss_pd)
5550 {
5551         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5552         int err;
5553
5554         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5555                                he_obss_pd_policy, NULL);
5556         if (err)
5557                 return err;
5558
5559         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5560                 return -EINVAL;
5561
5562         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5563
5564         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5565                 he_obss_pd->min_offset =
5566                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5567         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5568                 he_obss_pd->max_offset =
5569                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5570         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5571                 he_obss_pd->non_srg_max_offset =
5572                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5573
5574         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5575                 return -EINVAL;
5576
5577         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5578                 memcpy(he_obss_pd->bss_color_bitmap,
5579                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5580                        sizeof(he_obss_pd->bss_color_bitmap));
5581
5582         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5583                 memcpy(he_obss_pd->partial_bssid_bitmap,
5584                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5585                        sizeof(he_obss_pd->partial_bssid_bitmap));
5586
5587         he_obss_pd->enable = true;
5588
5589         return 0;
5590 }
5591
5592 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5593                                         struct nlattr *attrs,
5594                                         struct cfg80211_ap_settings *params)
5595 {
5596         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5597         int ret;
5598         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5599
5600         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5601                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5602                 return -EINVAL;
5603
5604         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5605                                NULL, NULL);
5606         if (ret)
5607                 return ret;
5608
5609         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5610             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5611             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5612                 return -EINVAL;
5613
5614         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5615         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5616         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5617         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5618
5619         return 0;
5620 }
5621
5622 static int
5623 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5624                                      struct nlattr *attrs,
5625                                      struct cfg80211_ap_settings *params)
5626 {
5627         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5628         int ret;
5629         struct cfg80211_unsol_bcast_probe_resp *presp =
5630                                         &params->unsol_bcast_probe_resp;
5631
5632         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5633                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5634                 return -EINVAL;
5635
5636         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5637                                attrs, NULL, NULL);
5638         if (ret)
5639                 return ret;
5640
5641         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5642             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5643                 return -EINVAL;
5644
5645         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5646         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5647         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5648         return 0;
5649 }
5650
5651 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5652                                             const struct element *rates)
5653 {
5654         int i;
5655
5656         if (!rates)
5657                 return;
5658
5659         for (i = 0; i < rates->datalen; i++) {
5660                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5661                         params->ht_required = true;
5662                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5663                         params->vht_required = true;
5664                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5665                         params->he_required = true;
5666                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5667                         params->sae_h2e_required = true;
5668         }
5669 }
5670
5671 /*
5672  * Since the nl80211 API didn't include, from the beginning, attributes about
5673  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5674  * benefit of drivers that rebuild IEs in the firmware.
5675  */
5676 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5677 {
5678         const struct cfg80211_beacon_data *bcn = &params->beacon;
5679         size_t ies_len = bcn->tail_len;
5680         const u8 *ies = bcn->tail;
5681         const struct element *rates;
5682         const struct element *cap;
5683
5684         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5685         nl80211_check_ap_rate_selectors(params, rates);
5686
5687         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5688         nl80211_check_ap_rate_selectors(params, rates);
5689
5690         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5691         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5692                 params->ht_cap = (void *)cap->data;
5693         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5694         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5695                 params->vht_cap = (void *)cap->data;
5696         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5697         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5698                 params->he_cap = (void *)(cap->data + 1);
5699         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5700         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5701                 params->he_oper = (void *)(cap->data + 1);
5702         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5703         if (cap) {
5704                 if (!cap->datalen)
5705                         return -EINVAL;
5706                 params->eht_cap = (void *)(cap->data + 1);
5707                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5708                                                 (const u8 *)params->eht_cap,
5709                                                 cap->datalen - 1, true))
5710                         return -EINVAL;
5711         }
5712         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5713         if (cap) {
5714                 if (!cap->datalen)
5715                         return -EINVAL;
5716                 params->eht_oper = (void *)(cap->data + 1);
5717                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5718                                                 cap->datalen - 1))
5719                         return -EINVAL;
5720         }
5721         return 0;
5722 }
5723
5724 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5725                                    struct cfg80211_ap_settings *params)
5726 {
5727         struct wireless_dev *wdev;
5728
5729         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5730                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5731                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5732                         continue;
5733
5734                 if (!wdev->u.ap.preset_chandef.chan)
5735                         continue;
5736
5737                 params->chandef = wdev->u.ap.preset_chandef;
5738                 return true;
5739         }
5740
5741         return false;
5742 }
5743
5744 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5745                                     enum nl80211_auth_type auth_type,
5746                                     enum nl80211_commands cmd)
5747 {
5748         if (auth_type > NL80211_AUTHTYPE_MAX)
5749                 return false;
5750
5751         switch (cmd) {
5752         case NL80211_CMD_AUTHENTICATE:
5753                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5754                     auth_type == NL80211_AUTHTYPE_SAE)
5755                         return false;
5756                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5757                                              NL80211_EXT_FEATURE_FILS_STA) &&
5758                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5759                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5760                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5761                         return false;
5762                 return true;
5763         case NL80211_CMD_CONNECT:
5764                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5765                     !wiphy_ext_feature_isset(&rdev->wiphy,
5766                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5767                     auth_type == NL80211_AUTHTYPE_SAE)
5768                         return false;
5769
5770                 /* FILS with SK PFS or PK not supported yet */
5771                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5772                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5773                         return false;
5774                 if (!wiphy_ext_feature_isset(
5775                             &rdev->wiphy,
5776                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5777                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5778                         return false;
5779                 return true;
5780         case NL80211_CMD_START_AP:
5781                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5782                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5783                     auth_type == NL80211_AUTHTYPE_SAE)
5784                         return false;
5785                 /* FILS not supported yet */
5786                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5787                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5788                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5789                         return false;
5790                 return true;
5791         default:
5792                 return false;
5793         }
5794 }
5795
5796 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5797                                     unsigned int link_id)
5798 {
5799         struct wiphy *wiphy = wdev->wiphy;
5800         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5801         struct sk_buff *msg;
5802         void *hdr;
5803
5804         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5805         if (!msg)
5806                 return;
5807
5808         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5809         if (!hdr)
5810                 goto out;
5811
5812         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5813             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5814             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5815                               NL80211_ATTR_PAD) ||
5816             (wdev->u.ap.ssid_len &&
5817              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5818                      wdev->u.ap.ssid)) ||
5819             (wdev->valid_links &&
5820              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5821                 goto out;
5822
5823         genlmsg_end(msg, hdr);
5824
5825         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5826                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5827         return;
5828 out:
5829         nlmsg_free(msg);
5830 }
5831
5832 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5833 {
5834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5835         unsigned int link_id = nl80211_link_id(info->attrs);
5836         struct net_device *dev = info->user_ptr[1];
5837         struct wireless_dev *wdev = dev->ieee80211_ptr;
5838         struct cfg80211_ap_settings *params;
5839         int err;
5840
5841         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5842             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5843                 return -EOPNOTSUPP;
5844
5845         if (!rdev->ops->start_ap)
5846                 return -EOPNOTSUPP;
5847
5848         if (wdev->links[link_id].ap.beacon_interval)
5849                 return -EALREADY;
5850
5851         /* these are required for START_AP */
5852         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5853             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5854             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5855                 return -EINVAL;
5856
5857         params = kzalloc(sizeof(*params), GFP_KERNEL);
5858         if (!params)
5859                 return -ENOMEM;
5860
5861         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon);
5862         if (err)
5863                 goto out;
5864
5865         params->beacon_interval =
5866                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5867         params->dtim_period =
5868                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5869
5870         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5871                                            params->beacon_interval);
5872         if (err)
5873                 goto out;
5874
5875         /*
5876          * In theory, some of these attributes should be required here
5877          * but since they were not used when the command was originally
5878          * added, keep them optional for old user space programs to let
5879          * them continue to work with drivers that do not need the
5880          * additional information -- drivers must check!
5881          */
5882         if (info->attrs[NL80211_ATTR_SSID]) {
5883                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5884                 params->ssid_len =
5885                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5886                 if (params->ssid_len == 0) {
5887                         err = -EINVAL;
5888                         goto out;
5889                 }
5890
5891                 if (wdev->u.ap.ssid_len &&
5892                     (wdev->u.ap.ssid_len != params->ssid_len ||
5893                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5894                         /* require identical SSID for MLO */
5895                         err = -EINVAL;
5896                         goto out;
5897                 }
5898         } else if (wdev->valid_links) {
5899                 /* require SSID for MLO */
5900                 err = -EINVAL;
5901                 goto out;
5902         }
5903
5904         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5905                 params->hidden_ssid = nla_get_u32(
5906                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5907
5908         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5909
5910         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5911                 params->auth_type = nla_get_u32(
5912                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5913                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5914                                              NL80211_CMD_START_AP)) {
5915                         err = -EINVAL;
5916                         goto out;
5917                 }
5918         } else
5919                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5920
5921         err = nl80211_crypto_settings(rdev, info, &params->crypto,
5922                                       NL80211_MAX_NR_CIPHER_SUITES);
5923         if (err)
5924                 goto out;
5925
5926         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5927                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
5928                         err = -EOPNOTSUPP;
5929                         goto out;
5930                 }
5931                 params->inactivity_timeout = nla_get_u16(
5932                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5933         }
5934
5935         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5936                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5937                         err = -EINVAL;
5938                         goto out;
5939                 }
5940                 params->p2p_ctwindow =
5941                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5942                 if (params->p2p_ctwindow != 0 &&
5943                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
5944                         err = -EINVAL;
5945                         goto out;
5946                 }
5947         }
5948
5949         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5950                 u8 tmp;
5951
5952                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5953                         err = -EINVAL;
5954                         goto out;
5955                 }
5956                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5957                 params->p2p_opp_ps = tmp;
5958                 if (params->p2p_opp_ps != 0 &&
5959                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
5960                         err = -EINVAL;
5961                         goto out;
5962                 }
5963         }
5964
5965         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5966                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
5967                 if (err)
5968                         goto out;
5969         } else if (wdev->valid_links) {
5970                 /* with MLD need to specify the channel configuration */
5971                 err = -EINVAL;
5972                 goto out;
5973         } else if (wdev->u.ap.preset_chandef.chan) {
5974                 params->chandef = wdev->u.ap.preset_chandef;
5975         } else if (!nl80211_get_ap_channel(rdev, params)) {
5976                 err = -EINVAL;
5977                 goto out;
5978         }
5979
5980         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
5981                 err = nl80211_parse_punct_bitmap(rdev, info,
5982                                                  &params->chandef,
5983                                                  &params->punct_bitmap);
5984                 if (err)
5985                         goto out;
5986         }
5987
5988         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
5989                                            wdev->iftype)) {
5990                 err = -EINVAL;
5991                 goto out;
5992         }
5993
5994         wdev_lock(wdev);
5995
5996         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5997                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5998                                                     NL80211_ATTR_TX_RATES,
5999                                                     &params->beacon_rate,
6000                                                     dev, false, link_id);
6001                 if (err)
6002                         goto out_unlock;
6003
6004                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6005                                               &params->beacon_rate);
6006                 if (err)
6007                         goto out_unlock;
6008         }
6009
6010         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6011                 params->smps_mode =
6012                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6013                 switch (params->smps_mode) {
6014                 case NL80211_SMPS_OFF:
6015                         break;
6016                 case NL80211_SMPS_STATIC:
6017                         if (!(rdev->wiphy.features &
6018                               NL80211_FEATURE_STATIC_SMPS)) {
6019                                 err = -EINVAL;
6020                                 goto out_unlock;
6021                         }
6022                         break;
6023                 case NL80211_SMPS_DYNAMIC:
6024                         if (!(rdev->wiphy.features &
6025                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6026                                 err = -EINVAL;
6027                                 goto out_unlock;
6028                         }
6029                         break;
6030                 default:
6031                         err = -EINVAL;
6032                         goto out_unlock;
6033                 }
6034         } else {
6035                 params->smps_mode = NL80211_SMPS_OFF;
6036         }
6037
6038         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6039         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6040                 err = -EOPNOTSUPP;
6041                 goto out_unlock;
6042         }
6043
6044         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6045                 params->acl = parse_acl_data(&rdev->wiphy, info);
6046                 if (IS_ERR(params->acl)) {
6047                         err = PTR_ERR(params->acl);
6048                         params->acl = NULL;
6049                         goto out_unlock;
6050                 }
6051         }
6052
6053         params->twt_responder =
6054                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6055
6056         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6057                 err = nl80211_parse_he_obss_pd(
6058                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6059                                         &params->he_obss_pd);
6060                 if (err)
6061                         goto out_unlock;
6062         }
6063
6064         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6065                 err = nl80211_parse_fils_discovery(rdev,
6066                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6067                                                    params);
6068                 if (err)
6069                         goto out_unlock;
6070         }
6071
6072         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6073                 err = nl80211_parse_unsol_bcast_probe_resp(
6074                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6075                         params);
6076                 if (err)
6077                         goto out_unlock;
6078         }
6079
6080         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6081                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6082                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6083                                                   &params->mbssid_config,
6084                                                   params->beacon.mbssid_ies ?
6085                                                         params->beacon.mbssid_ies->cnt :
6086                                                         0);
6087                 if (err)
6088                         goto out_unlock;
6089         }
6090
6091         err = nl80211_calculate_ap_params(params);
6092         if (err)
6093                 goto out_unlock;
6094
6095         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6096                 params->flags = nla_get_u32(
6097                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6098         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6099                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6100
6101         if (wdev->conn_owner_nlportid &&
6102             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6103             wdev->conn_owner_nlportid != info->snd_portid) {
6104                 err = -EINVAL;
6105                 goto out_unlock;
6106         }
6107
6108         /* FIXME: validate MLO/link-id against driver capabilities */
6109
6110         err = rdev_start_ap(rdev, dev, params);
6111         if (!err) {
6112                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6113                 wdev->links[link_id].ap.chandef = params->chandef;
6114                 wdev->u.ap.ssid_len = params->ssid_len;
6115                 memcpy(wdev->u.ap.ssid, params->ssid,
6116                        params->ssid_len);
6117
6118                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6119                         wdev->conn_owner_nlportid = info->snd_portid;
6120
6121                 nl80211_send_ap_started(wdev, link_id);
6122         }
6123 out_unlock:
6124         wdev_unlock(wdev);
6125 out:
6126         kfree(params->acl);
6127         kfree(params->beacon.mbssid_ies);
6128         if (params->mbssid_config.tx_wdev &&
6129             params->mbssid_config.tx_wdev->netdev &&
6130             params->mbssid_config.tx_wdev->netdev != dev)
6131                 dev_put(params->mbssid_config.tx_wdev->netdev);
6132         kfree(params);
6133
6134         return err;
6135 }
6136
6137 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6138 {
6139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6140         unsigned int link_id = nl80211_link_id(info->attrs);
6141         struct net_device *dev = info->user_ptr[1];
6142         struct wireless_dev *wdev = dev->ieee80211_ptr;
6143         struct cfg80211_beacon_data params;
6144         int err;
6145
6146         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6147             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6148                 return -EOPNOTSUPP;
6149
6150         if (!rdev->ops->change_beacon)
6151                 return -EOPNOTSUPP;
6152
6153         if (!wdev->links[link_id].ap.beacon_interval)
6154                 return -EINVAL;
6155
6156         err = nl80211_parse_beacon(rdev, info->attrs, &params);
6157         if (err)
6158                 goto out;
6159
6160         wdev_lock(wdev);
6161         err = rdev_change_beacon(rdev, dev, &params);
6162         wdev_unlock(wdev);
6163
6164 out:
6165         kfree(params.mbssid_ies);
6166         return err;
6167 }
6168
6169 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6170 {
6171         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6172         unsigned int link_id = nl80211_link_id(info->attrs);
6173         struct net_device *dev = info->user_ptr[1];
6174
6175         return cfg80211_stop_ap(rdev, dev, link_id, false);
6176 }
6177
6178 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6179         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6180         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6181         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6182         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6183         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6184         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6185 };
6186
6187 static int parse_station_flags(struct genl_info *info,
6188                                enum nl80211_iftype iftype,
6189                                struct station_parameters *params)
6190 {
6191         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6192         struct nlattr *nla;
6193         int flag;
6194
6195         /*
6196          * Try parsing the new attribute first so userspace
6197          * can specify both for older kernels.
6198          */
6199         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6200         if (nla) {
6201                 struct nl80211_sta_flag_update *sta_flags;
6202
6203                 sta_flags = nla_data(nla);
6204                 params->sta_flags_mask = sta_flags->mask;
6205                 params->sta_flags_set = sta_flags->set;
6206                 params->sta_flags_set &= params->sta_flags_mask;
6207                 if ((params->sta_flags_mask |
6208                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6209                         return -EINVAL;
6210                 return 0;
6211         }
6212
6213         /* if present, parse the old attribute */
6214
6215         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6216         if (!nla)
6217                 return 0;
6218
6219         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6220                 return -EINVAL;
6221
6222         /*
6223          * Only allow certain flags for interface types so that
6224          * other attributes are silently ignored. Remember that
6225          * this is backward compatibility code with old userspace
6226          * and shouldn't be hit in other cases anyway.
6227          */
6228         switch (iftype) {
6229         case NL80211_IFTYPE_AP:
6230         case NL80211_IFTYPE_AP_VLAN:
6231         case NL80211_IFTYPE_P2P_GO:
6232                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6233                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6234                                          BIT(NL80211_STA_FLAG_WME) |
6235                                          BIT(NL80211_STA_FLAG_MFP);
6236                 break;
6237         case NL80211_IFTYPE_P2P_CLIENT:
6238         case NL80211_IFTYPE_STATION:
6239                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6240                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6241                 break;
6242         case NL80211_IFTYPE_MESH_POINT:
6243                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6244                                          BIT(NL80211_STA_FLAG_MFP) |
6245                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6246                 break;
6247         default:
6248                 return -EINVAL;
6249         }
6250
6251         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6252                 if (flags[flag]) {
6253                         params->sta_flags_set |= (1<<flag);
6254
6255                         /* no longer support new API additions in old API */
6256                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6257                                 return -EINVAL;
6258                 }
6259         }
6260
6261         return 0;
6262 }
6263
6264 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6265 {
6266         struct nlattr *rate;
6267         u32 bitrate;
6268         u16 bitrate_compat;
6269         enum nl80211_rate_info rate_flg;
6270
6271         rate = nla_nest_start_noflag(msg, attr);
6272         if (!rate)
6273                 return false;
6274
6275         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6276         bitrate = cfg80211_calculate_bitrate(info);
6277         /* report 16-bit bitrate only if we can */
6278         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6279         if (bitrate > 0 &&
6280             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6281                 return false;
6282         if (bitrate_compat > 0 &&
6283             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6284                 return false;
6285
6286         switch (info->bw) {
6287         case RATE_INFO_BW_5:
6288                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6289                 break;
6290         case RATE_INFO_BW_10:
6291                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6292                 break;
6293         default:
6294                 WARN_ON(1);
6295                 fallthrough;
6296         case RATE_INFO_BW_20:
6297                 rate_flg = 0;
6298                 break;
6299         case RATE_INFO_BW_40:
6300                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6301                 break;
6302         case RATE_INFO_BW_80:
6303                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6304                 break;
6305         case RATE_INFO_BW_160:
6306                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6307                 break;
6308         case RATE_INFO_BW_HE_RU:
6309                 rate_flg = 0;
6310                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6311                 break;
6312         case RATE_INFO_BW_320:
6313                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6314                 break;
6315         case RATE_INFO_BW_EHT_RU:
6316                 rate_flg = 0;
6317                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6318                 break;
6319         }
6320
6321         if (rate_flg && nla_put_flag(msg, rate_flg))
6322                 return false;
6323
6324         if (info->flags & RATE_INFO_FLAGS_MCS) {
6325                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6326                         return false;
6327                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6328                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6329                         return false;
6330         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6331                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6332                         return false;
6333                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6334                         return false;
6335                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6336                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6337                         return false;
6338         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6339                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6340                         return false;
6341                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6342                         return false;
6343                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6344                         return false;
6345                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6346                         return false;
6347                 if (info->bw == RATE_INFO_BW_HE_RU &&
6348                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6349                                info->he_ru_alloc))
6350                         return false;
6351         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6352                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6353                         return false;
6354                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6355                         return false;
6356                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6357                         return false;
6358                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6359                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6360                                info->eht_ru_alloc))
6361                         return false;
6362         }
6363
6364         nla_nest_end(msg, rate);
6365         return true;
6366 }
6367
6368 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6369                                int id)
6370 {
6371         void *attr;
6372         int i = 0;
6373
6374         if (!mask)
6375                 return true;
6376
6377         attr = nla_nest_start_noflag(msg, id);
6378         if (!attr)
6379                 return false;
6380
6381         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6382                 if (!(mask & BIT(i)))
6383                         continue;
6384
6385                 if (nla_put_u8(msg, i, signal[i]))
6386                         return false;
6387         }
6388
6389         nla_nest_end(msg, attr);
6390
6391         return true;
6392 }
6393
6394 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6395                                 u32 seq, int flags,
6396                                 struct cfg80211_registered_device *rdev,
6397                                 struct net_device *dev,
6398                                 const u8 *mac_addr, struct station_info *sinfo)
6399 {
6400         void *hdr;
6401         struct nlattr *sinfoattr, *bss_param;
6402
6403         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6404         if (!hdr) {
6405                 cfg80211_sinfo_release_content(sinfo);
6406                 return -1;
6407         }
6408
6409         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6410             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6411             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6412                 goto nla_put_failure;
6413
6414         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6415         if (!sinfoattr)
6416                 goto nla_put_failure;
6417
6418 #define PUT_SINFO(attr, memb, type) do {                                \
6419         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6420         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6421             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6422                              sinfo->memb))                              \
6423                 goto nla_put_failure;                                   \
6424         } while (0)
6425 #define PUT_SINFO_U64(attr, memb) do {                                  \
6426         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6427             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6428                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6429                 goto nla_put_failure;                                   \
6430         } while (0)
6431
6432         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6433         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6434         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6435
6436         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6437                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6438             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6439                         (u32)sinfo->rx_bytes))
6440                 goto nla_put_failure;
6441
6442         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6443                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6444             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6445                         (u32)sinfo->tx_bytes))
6446                 goto nla_put_failure;
6447
6448         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6449         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6450         PUT_SINFO(LLID, llid, u16);
6451         PUT_SINFO(PLID, plid, u16);
6452         PUT_SINFO(PLINK_STATE, plink_state, u8);
6453         PUT_SINFO_U64(RX_DURATION, rx_duration);
6454         PUT_SINFO_U64(TX_DURATION, tx_duration);
6455
6456         if (wiphy_ext_feature_isset(&rdev->wiphy,
6457                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6458                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6459
6460         switch (rdev->wiphy.signal_type) {
6461         case CFG80211_SIGNAL_TYPE_MBM:
6462                 PUT_SINFO(SIGNAL, signal, u8);
6463                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6464                 break;
6465         default:
6466                 break;
6467         }
6468         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6469                 if (!nl80211_put_signal(msg, sinfo->chains,
6470                                         sinfo->chain_signal,
6471                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6472                         goto nla_put_failure;
6473         }
6474         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6475                 if (!nl80211_put_signal(msg, sinfo->chains,
6476                                         sinfo->chain_signal_avg,
6477                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6478                         goto nla_put_failure;
6479         }
6480         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6481                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6482                                           NL80211_STA_INFO_TX_BITRATE))
6483                         goto nla_put_failure;
6484         }
6485         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6486                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6487                                           NL80211_STA_INFO_RX_BITRATE))
6488                         goto nla_put_failure;
6489         }
6490
6491         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6492         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6493         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6494         PUT_SINFO(TX_FAILED, tx_failed, u32);
6495         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6496         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6497         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6498         PUT_SINFO(LOCAL_PM, local_pm, u32);
6499         PUT_SINFO(PEER_PM, peer_pm, u32);
6500         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6501         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6502         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6503
6504         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6505                 bss_param = nla_nest_start_noflag(msg,
6506                                                   NL80211_STA_INFO_BSS_PARAM);
6507                 if (!bss_param)
6508                         goto nla_put_failure;
6509
6510                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6511                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6512                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6513                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6514                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6515                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6516                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6517                                sinfo->bss_param.dtim_period) ||
6518                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6519                                 sinfo->bss_param.beacon_interval))
6520                         goto nla_put_failure;
6521
6522                 nla_nest_end(msg, bss_param);
6523         }
6524         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6525             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6526                     sizeof(struct nl80211_sta_flag_update),
6527                     &sinfo->sta_flags))
6528                 goto nla_put_failure;
6529
6530         PUT_SINFO_U64(T_OFFSET, t_offset);
6531         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6532         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6533         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6534         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6535         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6536         if (wiphy_ext_feature_isset(&rdev->wiphy,
6537                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6538                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6539                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6540         }
6541
6542 #undef PUT_SINFO
6543 #undef PUT_SINFO_U64
6544
6545         if (sinfo->pertid) {
6546                 struct nlattr *tidsattr;
6547                 int tid;
6548
6549                 tidsattr = nla_nest_start_noflag(msg,
6550                                                  NL80211_STA_INFO_TID_STATS);
6551                 if (!tidsattr)
6552                         goto nla_put_failure;
6553
6554                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6555                         struct cfg80211_tid_stats *tidstats;
6556                         struct nlattr *tidattr;
6557
6558                         tidstats = &sinfo->pertid[tid];
6559
6560                         if (!tidstats->filled)
6561                                 continue;
6562
6563                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6564                         if (!tidattr)
6565                                 goto nla_put_failure;
6566
6567 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6568         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6569             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6570                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6571                 goto nla_put_failure;                                   \
6572         } while (0)
6573
6574                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6575                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6576                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6577                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6578
6579 #undef PUT_TIDVAL_U64
6580                         if ((tidstats->filled &
6581                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6582                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6583                                                    NL80211_TID_STATS_TXQ_STATS))
6584                                 goto nla_put_failure;
6585
6586                         nla_nest_end(msg, tidattr);
6587                 }
6588
6589                 nla_nest_end(msg, tidsattr);
6590         }
6591
6592         nla_nest_end(msg, sinfoattr);
6593
6594         if (sinfo->assoc_req_ies_len &&
6595             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6596                     sinfo->assoc_req_ies))
6597                 goto nla_put_failure;
6598
6599         if (sinfo->assoc_resp_ies_len &&
6600             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6601                     sinfo->assoc_resp_ies))
6602                 goto nla_put_failure;
6603
6604         if (sinfo->mlo_params_valid) {
6605                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6606                                sinfo->assoc_link_id))
6607                         goto nla_put_failure;
6608
6609                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6610                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6611                             sinfo->mld_addr))
6612                         goto nla_put_failure;
6613         }
6614
6615         cfg80211_sinfo_release_content(sinfo);
6616         genlmsg_end(msg, hdr);
6617         return 0;
6618
6619  nla_put_failure:
6620         cfg80211_sinfo_release_content(sinfo);
6621         genlmsg_cancel(msg, hdr);
6622         return -EMSGSIZE;
6623 }
6624
6625 static int nl80211_dump_station(struct sk_buff *skb,
6626                                 struct netlink_callback *cb)
6627 {
6628         struct station_info sinfo;
6629         struct cfg80211_registered_device *rdev;
6630         struct wireless_dev *wdev;
6631         u8 mac_addr[ETH_ALEN];
6632         int sta_idx = cb->args[2];
6633         int err;
6634
6635         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6636         if (err)
6637                 return err;
6638         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6639         __acquire(&rdev->wiphy.mtx);
6640
6641         if (!wdev->netdev) {
6642                 err = -EINVAL;
6643                 goto out_err;
6644         }
6645
6646         if (!rdev->ops->dump_station) {
6647                 err = -EOPNOTSUPP;
6648                 goto out_err;
6649         }
6650
6651         while (1) {
6652                 memset(&sinfo, 0, sizeof(sinfo));
6653                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6654                                         mac_addr, &sinfo);
6655                 if (err == -ENOENT)
6656                         break;
6657                 if (err)
6658                         goto out_err;
6659
6660                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6661                                 NETLINK_CB(cb->skb).portid,
6662                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6663                                 rdev, wdev->netdev, mac_addr,
6664                                 &sinfo) < 0)
6665                         goto out;
6666
6667                 sta_idx++;
6668         }
6669
6670  out:
6671         cb->args[2] = sta_idx;
6672         err = skb->len;
6673  out_err:
6674         wiphy_unlock(&rdev->wiphy);
6675
6676         return err;
6677 }
6678
6679 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6680 {
6681         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6682         struct net_device *dev = info->user_ptr[1];
6683         struct station_info sinfo;
6684         struct sk_buff *msg;
6685         u8 *mac_addr = NULL;
6686         int err;
6687
6688         memset(&sinfo, 0, sizeof(sinfo));
6689
6690         if (!info->attrs[NL80211_ATTR_MAC])
6691                 return -EINVAL;
6692
6693         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6694
6695         if (!rdev->ops->get_station)
6696                 return -EOPNOTSUPP;
6697
6698         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6699         if (err)
6700                 return err;
6701
6702         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6703         if (!msg) {
6704                 cfg80211_sinfo_release_content(&sinfo);
6705                 return -ENOMEM;
6706         }
6707
6708         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6709                                  info->snd_portid, info->snd_seq, 0,
6710                                  rdev, dev, mac_addr, &sinfo) < 0) {
6711                 nlmsg_free(msg);
6712                 return -ENOBUFS;
6713         }
6714
6715         return genlmsg_reply(msg, info);
6716 }
6717
6718 int cfg80211_check_station_change(struct wiphy *wiphy,
6719                                   struct station_parameters *params,
6720                                   enum cfg80211_station_type statype)
6721 {
6722         if (params->listen_interval != -1 &&
6723             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6724                 return -EINVAL;
6725
6726         if (params->support_p2p_ps != -1 &&
6727             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6728                 return -EINVAL;
6729
6730         if (params->aid &&
6731             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6732             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6733                 return -EINVAL;
6734
6735         /* When you run into this, adjust the code below for the new flag */
6736         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6737
6738         switch (statype) {
6739         case CFG80211_STA_MESH_PEER_KERNEL:
6740         case CFG80211_STA_MESH_PEER_USER:
6741                 /*
6742                  * No ignoring the TDLS flag here -- the userspace mesh
6743                  * code doesn't have the bug of including TDLS in the
6744                  * mask everywhere.
6745                  */
6746                 if (params->sta_flags_mask &
6747                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6748                                   BIT(NL80211_STA_FLAG_MFP) |
6749                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6750                         return -EINVAL;
6751                 break;
6752         case CFG80211_STA_TDLS_PEER_SETUP:
6753         case CFG80211_STA_TDLS_PEER_ACTIVE:
6754                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6755                         return -EINVAL;
6756                 /* ignore since it can't change */
6757                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6758                 break;
6759         default:
6760                 /* disallow mesh-specific things */
6761                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6762                         return -EINVAL;
6763                 if (params->local_pm)
6764                         return -EINVAL;
6765                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6766                         return -EINVAL;
6767         }
6768
6769         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6770             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6771                 /* TDLS can't be set, ... */
6772                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6773                         return -EINVAL;
6774                 /*
6775                  * ... but don't bother the driver with it. This works around
6776                  * a hostapd/wpa_supplicant issue -- it always includes the
6777                  * TLDS_PEER flag in the mask even for AP mode.
6778                  */
6779                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6780         }
6781
6782         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6783             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6784                 /* reject other things that can't change */
6785                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6786                         return -EINVAL;
6787                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6788                         return -EINVAL;
6789                 if (params->link_sta_params.supported_rates)
6790                         return -EINVAL;
6791                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6792                     params->link_sta_params.vht_capa ||
6793                     params->link_sta_params.he_capa ||
6794                     params->link_sta_params.eht_capa)
6795                         return -EINVAL;
6796         }
6797
6798         if (statype != CFG80211_STA_AP_CLIENT &&
6799             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6800                 if (params->vlan)
6801                         return -EINVAL;
6802         }
6803
6804         switch (statype) {
6805         case CFG80211_STA_AP_MLME_CLIENT:
6806                 /* Use this only for authorizing/unauthorizing a station */
6807                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6808                         return -EOPNOTSUPP;
6809                 break;
6810         case CFG80211_STA_AP_CLIENT:
6811         case CFG80211_STA_AP_CLIENT_UNASSOC:
6812                 /* accept only the listed bits */
6813                 if (params->sta_flags_mask &
6814                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6815                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6816                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6817                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6818                                   BIT(NL80211_STA_FLAG_WME) |
6819                                   BIT(NL80211_STA_FLAG_MFP)))
6820                         return -EINVAL;
6821
6822                 /* but authenticated/associated only if driver handles it */
6823                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6824                     params->sta_flags_mask &
6825                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6826                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6827                         return -EINVAL;
6828                 break;
6829         case CFG80211_STA_IBSS:
6830         case CFG80211_STA_AP_STA:
6831                 /* reject any changes other than AUTHORIZED */
6832                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6833                         return -EINVAL;
6834                 break;
6835         case CFG80211_STA_TDLS_PEER_SETUP:
6836                 /* reject any changes other than AUTHORIZED or WME */
6837                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6838                                                BIT(NL80211_STA_FLAG_WME)))
6839                         return -EINVAL;
6840                 /* force (at least) rates when authorizing */
6841                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6842                     !params->link_sta_params.supported_rates)
6843                         return -EINVAL;
6844                 break;
6845         case CFG80211_STA_TDLS_PEER_ACTIVE:
6846                 /* reject any changes */
6847                 return -EINVAL;
6848         case CFG80211_STA_MESH_PEER_KERNEL:
6849                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6850                         return -EINVAL;
6851                 break;
6852         case CFG80211_STA_MESH_PEER_USER:
6853                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6854                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6855                         return -EINVAL;
6856                 break;
6857         }
6858
6859         /*
6860          * Older kernel versions ignored this attribute entirely, so don't
6861          * reject attempts to update it but mark it as unused instead so the
6862          * driver won't look at the data.
6863          */
6864         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6865             statype != CFG80211_STA_TDLS_PEER_SETUP)
6866                 params->link_sta_params.opmode_notif_used = false;
6867
6868         return 0;
6869 }
6870 EXPORT_SYMBOL(cfg80211_check_station_change);
6871
6872 /*
6873  * Get vlan interface making sure it is running and on the right wiphy.
6874  */
6875 static struct net_device *get_vlan(struct genl_info *info,
6876                                    struct cfg80211_registered_device *rdev)
6877 {
6878         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6879         struct net_device *v;
6880         int ret;
6881
6882         if (!vlanattr)
6883                 return NULL;
6884
6885         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6886         if (!v)
6887                 return ERR_PTR(-ENODEV);
6888
6889         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6890                 ret = -EINVAL;
6891                 goto error;
6892         }
6893
6894         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6895             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6896             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6897                 ret = -EINVAL;
6898                 goto error;
6899         }
6900
6901         if (!netif_running(v)) {
6902                 ret = -ENETDOWN;
6903                 goto error;
6904         }
6905
6906         return v;
6907  error:
6908         dev_put(v);
6909         return ERR_PTR(ret);
6910 }
6911
6912 static int nl80211_parse_sta_wme(struct genl_info *info,
6913                                  struct station_parameters *params)
6914 {
6915         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6916         struct nlattr *nla;
6917         int err;
6918
6919         /* parse WME attributes if present */
6920         if (!info->attrs[NL80211_ATTR_STA_WME])
6921                 return 0;
6922
6923         nla = info->attrs[NL80211_ATTR_STA_WME];
6924         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6925                                           nl80211_sta_wme_policy,
6926                                           info->extack);
6927         if (err)
6928                 return err;
6929
6930         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6931                 params->uapsd_queues = nla_get_u8(
6932                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6933         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6934                 return -EINVAL;
6935
6936         if (tb[NL80211_STA_WME_MAX_SP])
6937                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6938
6939         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6940                 return -EINVAL;
6941
6942         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6943
6944         return 0;
6945 }
6946
6947 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6948                                       struct station_parameters *params)
6949 {
6950         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6951                 params->supported_channels =
6952                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6953                 params->supported_channels_len =
6954                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6955                 /*
6956                  * Need to include at least one (first channel, number of
6957                  * channels) tuple for each subband (checked in policy),
6958                  * and must have proper tuples for the rest of the data as well.
6959                  */
6960                 if (params->supported_channels_len % 2)
6961                         return -EINVAL;
6962         }
6963
6964         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6965                 params->supported_oper_classes =
6966                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6967                 params->supported_oper_classes_len =
6968                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6969         }
6970         return 0;
6971 }
6972
6973 static int nl80211_set_station_tdls(struct genl_info *info,
6974                                     struct station_parameters *params)
6975 {
6976         int err;
6977         /* Dummy STA entry gets updated once the peer capabilities are known */
6978         if (info->attrs[NL80211_ATTR_PEER_AID])
6979                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6980         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6981                 params->link_sta_params.ht_capa =
6982                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6983         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6984                 params->link_sta_params.vht_capa =
6985                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6986         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6987                 params->link_sta_params.he_capa =
6988                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6989                 params->link_sta_params.he_capa_len =
6990                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6991
6992                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
6993                         params->link_sta_params.eht_capa =
6994                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6995                         params->link_sta_params.eht_capa_len =
6996                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6997
6998                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
6999                                                         (const u8 *)params->link_sta_params.eht_capa,
7000                                                         params->link_sta_params.eht_capa_len,
7001                                                         false))
7002                                 return -EINVAL;
7003                 }
7004         }
7005
7006         err = nl80211_parse_sta_channel_info(info, params);
7007         if (err)
7008                 return err;
7009
7010         return nl80211_parse_sta_wme(info, params);
7011 }
7012
7013 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7014                                              struct sta_txpwr *txpwr,
7015                                              bool *txpwr_set)
7016 {
7017         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7018         int idx;
7019
7020         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7021                 if (!rdev->ops->set_tx_power ||
7022                     !wiphy_ext_feature_isset(&rdev->wiphy,
7023                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7024                         return -EOPNOTSUPP;
7025
7026                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7027                 txpwr->type = nla_get_u8(info->attrs[idx]);
7028
7029                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7030                         idx = NL80211_ATTR_STA_TX_POWER;
7031
7032                         if (info->attrs[idx])
7033                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7034                         else
7035                                 return -EINVAL;
7036                 }
7037
7038                 *txpwr_set = true;
7039         } else {
7040                 *txpwr_set = false;
7041         }
7042
7043         return 0;
7044 }
7045
7046 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7047 {
7048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7049         struct net_device *dev = info->user_ptr[1];
7050         struct station_parameters params;
7051         u8 *mac_addr;
7052         int err;
7053
7054         memset(&params, 0, sizeof(params));
7055
7056         if (!rdev->ops->change_station)
7057                 return -EOPNOTSUPP;
7058
7059         /*
7060          * AID and listen_interval properties can be set only for unassociated
7061          * station. Include these parameters here and will check them in
7062          * cfg80211_check_station_change().
7063          */
7064         if (info->attrs[NL80211_ATTR_STA_AID])
7065                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7066
7067         if (info->attrs[NL80211_ATTR_VLAN_ID])
7068                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7069
7070         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7071                 params.listen_interval =
7072                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7073         else
7074                 params.listen_interval = -1;
7075
7076         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7077                 params.support_p2p_ps =
7078                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7079         else
7080                 params.support_p2p_ps = -1;
7081
7082         if (!info->attrs[NL80211_ATTR_MAC])
7083                 return -EINVAL;
7084
7085         params.link_sta_params.link_id =
7086                 nl80211_link_id_or_invalid(info->attrs);
7087
7088         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7089                 /* If MLD_ADDR attribute is set then this is an MLD station
7090                  * and the MLD_ADDR attribute holds the MLD address and the
7091                  * MAC attribute holds for the LINK address.
7092                  * In that case, the link_id is also expected to be valid.
7093                  */
7094                 if (params.link_sta_params.link_id < 0)
7095                         return -EINVAL;
7096
7097                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7098                 params.link_sta_params.mld_mac = mac_addr;
7099                 params.link_sta_params.link_mac =
7100                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7101                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7102                         return -EINVAL;
7103         } else {
7104                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7105         }
7106
7107
7108         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7109                 params.link_sta_params.supported_rates =
7110                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7111                 params.link_sta_params.supported_rates_len =
7112                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7113         }
7114
7115         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7116                 params.capability =
7117                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7118                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7119         }
7120
7121         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7122                 params.ext_capab =
7123                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7124                 params.ext_capab_len =
7125                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7126         }
7127
7128         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7129                 return -EINVAL;
7130
7131         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7132                 params.plink_action =
7133                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7134
7135         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7136                 params.plink_state =
7137                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7138                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7139                         params.peer_aid = nla_get_u16(
7140                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7141                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7142         }
7143
7144         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7145                 params.local_pm = nla_get_u32(
7146                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7147
7148         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7149                 params.link_sta_params.opmode_notif_used = true;
7150                 params.link_sta_params.opmode_notif =
7151                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7152         }
7153
7154         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7155                 params.link_sta_params.he_6ghz_capa =
7156                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7157
7158         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7159                 params.airtime_weight =
7160                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7161
7162         if (params.airtime_weight &&
7163             !wiphy_ext_feature_isset(&rdev->wiphy,
7164                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7165                 return -EOPNOTSUPP;
7166
7167         err = nl80211_parse_sta_txpower_setting(info,
7168                                                 &params.link_sta_params.txpwr,
7169                                                 &params.link_sta_params.txpwr_set);
7170         if (err)
7171                 return err;
7172
7173         /* Include parameters for TDLS peer (will check later) */
7174         err = nl80211_set_station_tdls(info, &params);
7175         if (err)
7176                 return err;
7177
7178         params.vlan = get_vlan(info, rdev);
7179         if (IS_ERR(params.vlan))
7180                 return PTR_ERR(params.vlan);
7181
7182         switch (dev->ieee80211_ptr->iftype) {
7183         case NL80211_IFTYPE_AP:
7184         case NL80211_IFTYPE_AP_VLAN:
7185         case NL80211_IFTYPE_P2P_GO:
7186         case NL80211_IFTYPE_P2P_CLIENT:
7187         case NL80211_IFTYPE_STATION:
7188         case NL80211_IFTYPE_ADHOC:
7189         case NL80211_IFTYPE_MESH_POINT:
7190                 break;
7191         default:
7192                 err = -EOPNOTSUPP;
7193                 goto out_put_vlan;
7194         }
7195
7196         /* driver will call cfg80211_check_station_change() */
7197         wdev_lock(dev->ieee80211_ptr);
7198         err = rdev_change_station(rdev, dev, mac_addr, &params);
7199         wdev_unlock(dev->ieee80211_ptr);
7200
7201  out_put_vlan:
7202         dev_put(params.vlan);
7203
7204         return err;
7205 }
7206
7207 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7208 {
7209         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7210         int err;
7211         struct net_device *dev = info->user_ptr[1];
7212         struct wireless_dev *wdev = dev->ieee80211_ptr;
7213         struct station_parameters params;
7214         u8 *mac_addr = NULL;
7215         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7216                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7217
7218         memset(&params, 0, sizeof(params));
7219
7220         if (!rdev->ops->add_station)
7221                 return -EOPNOTSUPP;
7222
7223         if (!info->attrs[NL80211_ATTR_MAC])
7224                 return -EINVAL;
7225
7226         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7227                 return -EINVAL;
7228
7229         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7230                 return -EINVAL;
7231
7232         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7233             !info->attrs[NL80211_ATTR_PEER_AID])
7234                 return -EINVAL;
7235
7236         params.link_sta_params.link_id =
7237                 nl80211_link_id_or_invalid(info->attrs);
7238
7239         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7240                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7241                 params.link_sta_params.mld_mac = mac_addr;
7242                 params.link_sta_params.link_mac =
7243                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7244                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7245                         return -EINVAL;
7246         } else {
7247                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7248         }
7249
7250         params.link_sta_params.supported_rates =
7251                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7252         params.link_sta_params.supported_rates_len =
7253                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7254         params.listen_interval =
7255                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7256
7257         if (info->attrs[NL80211_ATTR_VLAN_ID])
7258                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7259
7260         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7261                 params.support_p2p_ps =
7262                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7263         } else {
7264                 /*
7265                  * if not specified, assume it's supported for P2P GO interface,
7266                  * and is NOT supported for AP interface
7267                  */
7268                 params.support_p2p_ps =
7269                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7270         }
7271
7272         if (info->attrs[NL80211_ATTR_PEER_AID])
7273                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7274         else
7275                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7276
7277         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7278                 params.capability =
7279                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7280                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7281         }
7282
7283         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7284                 params.ext_capab =
7285                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7286                 params.ext_capab_len =
7287                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7288         }
7289
7290         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7291                 params.link_sta_params.ht_capa =
7292                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7293
7294         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7295                 params.link_sta_params.vht_capa =
7296                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7297
7298         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7299                 params.link_sta_params.he_capa =
7300                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7301                 params.link_sta_params.he_capa_len =
7302                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7303
7304                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7305                         params.link_sta_params.eht_capa =
7306                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7307                         params.link_sta_params.eht_capa_len =
7308                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7309
7310                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7311                                                         (const u8 *)params.link_sta_params.eht_capa,
7312                                                         params.link_sta_params.eht_capa_len,
7313                                                         false))
7314                                 return -EINVAL;
7315                 }
7316         }
7317
7318         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7319                 params.link_sta_params.he_6ghz_capa =
7320                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7321
7322         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7323                 params.link_sta_params.opmode_notif_used = true;
7324                 params.link_sta_params.opmode_notif =
7325                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7326         }
7327
7328         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7329                 params.plink_action =
7330                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7331
7332         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7333                 params.airtime_weight =
7334                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7335
7336         if (params.airtime_weight &&
7337             !wiphy_ext_feature_isset(&rdev->wiphy,
7338                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7339                 return -EOPNOTSUPP;
7340
7341         err = nl80211_parse_sta_txpower_setting(info,
7342                                                 &params.link_sta_params.txpwr,
7343                                                 &params.link_sta_params.txpwr_set);
7344         if (err)
7345                 return err;
7346
7347         err = nl80211_parse_sta_channel_info(info, &params);
7348         if (err)
7349                 return err;
7350
7351         err = nl80211_parse_sta_wme(info, &params);
7352         if (err)
7353                 return err;
7354
7355         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7356                 return -EINVAL;
7357
7358         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7359          * as userspace might just pass through the capabilities from the IEs
7360          * directly, rather than enforcing this restriction and returning an
7361          * error in this case.
7362          */
7363         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7364                 params.link_sta_params.ht_capa = NULL;
7365                 params.link_sta_params.vht_capa = NULL;
7366
7367                 /* HE and EHT require WME */
7368                 if (params.link_sta_params.he_capa_len ||
7369                     params.link_sta_params.he_6ghz_capa ||
7370                     params.link_sta_params.eht_capa_len)
7371                         return -EINVAL;
7372         }
7373
7374         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7375         if (params.link_sta_params.he_6ghz_capa &&
7376             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7377                 return -EINVAL;
7378
7379         /* When you run into this, adjust the code below for the new flag */
7380         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7381
7382         switch (dev->ieee80211_ptr->iftype) {
7383         case NL80211_IFTYPE_AP:
7384         case NL80211_IFTYPE_AP_VLAN:
7385         case NL80211_IFTYPE_P2P_GO:
7386                 /* ignore WME attributes if iface/sta is not capable */
7387                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7388                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7389                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7390
7391                 /* TDLS peers cannot be added */
7392                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7393                     info->attrs[NL80211_ATTR_PEER_AID])
7394                         return -EINVAL;
7395                 /* but don't bother the driver with it */
7396                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7397
7398                 /* allow authenticated/associated only if driver handles it */
7399                 if (!(rdev->wiphy.features &
7400                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7401                     params.sta_flags_mask & auth_assoc)
7402                         return -EINVAL;
7403
7404                 /* Older userspace, or userspace wanting to be compatible with
7405                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7406                  * and assoc flags in the mask, but assumes the station will be
7407                  * added as associated anyway since this was the required driver
7408                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7409                  * introduced.
7410                  * In order to not bother drivers with this quirk in the API
7411                  * set the flags in both the mask and set for new stations in
7412                  * this case.
7413                  */
7414                 if (!(params.sta_flags_mask & auth_assoc)) {
7415                         params.sta_flags_mask |= auth_assoc;
7416                         params.sta_flags_set |= auth_assoc;
7417                 }
7418
7419                 /* must be last in here for error handling */
7420                 params.vlan = get_vlan(info, rdev);
7421                 if (IS_ERR(params.vlan))
7422                         return PTR_ERR(params.vlan);
7423                 break;
7424         case NL80211_IFTYPE_MESH_POINT:
7425                 /* ignore uAPSD data */
7426                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7427
7428                 /* associated is disallowed */
7429                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7430                         return -EINVAL;
7431                 /* TDLS peers cannot be added */
7432                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7433                     info->attrs[NL80211_ATTR_PEER_AID])
7434                         return -EINVAL;
7435                 break;
7436         case NL80211_IFTYPE_STATION:
7437         case NL80211_IFTYPE_P2P_CLIENT:
7438                 /* ignore uAPSD data */
7439                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7440
7441                 /* these are disallowed */
7442                 if (params.sta_flags_mask &
7443                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7444                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7445                         return -EINVAL;
7446                 /* Only TDLS peers can be added */
7447                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7448                         return -EINVAL;
7449                 /* Can only add if TDLS ... */
7450                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7451                         return -EOPNOTSUPP;
7452                 /* ... with external setup is supported */
7453                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7454                         return -EOPNOTSUPP;
7455                 /*
7456                  * Older wpa_supplicant versions always mark the TDLS peer
7457                  * as authorized, but it shouldn't yet be.
7458                  */
7459                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7460                 break;
7461         default:
7462                 return -EOPNOTSUPP;
7463         }
7464
7465         /* be aware of params.vlan when changing code here */
7466
7467         wdev_lock(dev->ieee80211_ptr);
7468         if (wdev->valid_links) {
7469                 if (params.link_sta_params.link_id < 0) {
7470                         err = -EINVAL;
7471                         goto out;
7472                 }
7473                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7474                         err = -ENOLINK;
7475                         goto out;
7476                 }
7477         } else {
7478                 if (params.link_sta_params.link_id >= 0) {
7479                         err = -EINVAL;
7480                         goto out;
7481                 }
7482         }
7483         err = rdev_add_station(rdev, dev, mac_addr, &params);
7484 out:
7485         wdev_unlock(dev->ieee80211_ptr);
7486         dev_put(params.vlan);
7487         return err;
7488 }
7489
7490 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7491 {
7492         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7493         struct net_device *dev = info->user_ptr[1];
7494         struct station_del_parameters params;
7495         int ret;
7496
7497         memset(&params, 0, sizeof(params));
7498
7499         if (info->attrs[NL80211_ATTR_MAC])
7500                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7501
7502         switch (dev->ieee80211_ptr->iftype) {
7503         case NL80211_IFTYPE_AP:
7504         case NL80211_IFTYPE_AP_VLAN:
7505         case NL80211_IFTYPE_MESH_POINT:
7506         case NL80211_IFTYPE_P2P_GO:
7507                 /* always accept these */
7508                 break;
7509         case NL80211_IFTYPE_ADHOC:
7510                 /* conditionally accept */
7511                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7512                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7513                         break;
7514                 return -EINVAL;
7515         default:
7516                 return -EINVAL;
7517         }
7518
7519         if (!rdev->ops->del_station)
7520                 return -EOPNOTSUPP;
7521
7522         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7523                 params.subtype =
7524                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7525                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7526                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7527                         return -EINVAL;
7528         } else {
7529                 /* Default to Deauthentication frame */
7530                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7531         }
7532
7533         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7534                 params.reason_code =
7535                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7536                 if (params.reason_code == 0)
7537                         return -EINVAL; /* 0 is reserved */
7538         } else {
7539                 /* Default to reason code 2 */
7540                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7541         }
7542
7543         wdev_lock(dev->ieee80211_ptr);
7544         ret = rdev_del_station(rdev, dev, &params);
7545         wdev_unlock(dev->ieee80211_ptr);
7546
7547         return ret;
7548 }
7549
7550 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7551                                 int flags, struct net_device *dev,
7552                                 u8 *dst, u8 *next_hop,
7553                                 struct mpath_info *pinfo)
7554 {
7555         void *hdr;
7556         struct nlattr *pinfoattr;
7557
7558         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7559         if (!hdr)
7560                 return -1;
7561
7562         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7563             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7564             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7565             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7566                 goto nla_put_failure;
7567
7568         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7569         if (!pinfoattr)
7570                 goto nla_put_failure;
7571         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7572             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7573                         pinfo->frame_qlen))
7574                 goto nla_put_failure;
7575         if (((pinfo->filled & MPATH_INFO_SN) &&
7576              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7577             ((pinfo->filled & MPATH_INFO_METRIC) &&
7578              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7579                          pinfo->metric)) ||
7580             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7581              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7582                          pinfo->exptime)) ||
7583             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7584              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7585                         pinfo->flags)) ||
7586             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7587              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7588                          pinfo->discovery_timeout)) ||
7589             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7590              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7591                         pinfo->discovery_retries)) ||
7592             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7593              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7594                         pinfo->hop_count)) ||
7595             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7596              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7597                          pinfo->path_change_count)))
7598                 goto nla_put_failure;
7599
7600         nla_nest_end(msg, pinfoattr);
7601
7602         genlmsg_end(msg, hdr);
7603         return 0;
7604
7605  nla_put_failure:
7606         genlmsg_cancel(msg, hdr);
7607         return -EMSGSIZE;
7608 }
7609
7610 static int nl80211_dump_mpath(struct sk_buff *skb,
7611                               struct netlink_callback *cb)
7612 {
7613         struct mpath_info pinfo;
7614         struct cfg80211_registered_device *rdev;
7615         struct wireless_dev *wdev;
7616         u8 dst[ETH_ALEN];
7617         u8 next_hop[ETH_ALEN];
7618         int path_idx = cb->args[2];
7619         int err;
7620
7621         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7622         if (err)
7623                 return err;
7624         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7625         __acquire(&rdev->wiphy.mtx);
7626
7627         if (!rdev->ops->dump_mpath) {
7628                 err = -EOPNOTSUPP;
7629                 goto out_err;
7630         }
7631
7632         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7633                 err = -EOPNOTSUPP;
7634                 goto out_err;
7635         }
7636
7637         while (1) {
7638                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7639                                       next_hop, &pinfo);
7640                 if (err == -ENOENT)
7641                         break;
7642                 if (err)
7643                         goto out_err;
7644
7645                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7646                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7647                                        wdev->netdev, dst, next_hop,
7648                                        &pinfo) < 0)
7649                         goto out;
7650
7651                 path_idx++;
7652         }
7653
7654  out:
7655         cb->args[2] = path_idx;
7656         err = skb->len;
7657  out_err:
7658         wiphy_unlock(&rdev->wiphy);
7659         return err;
7660 }
7661
7662 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7663 {
7664         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7665         int err;
7666         struct net_device *dev = info->user_ptr[1];
7667         struct mpath_info pinfo;
7668         struct sk_buff *msg;
7669         u8 *dst = NULL;
7670         u8 next_hop[ETH_ALEN];
7671
7672         memset(&pinfo, 0, sizeof(pinfo));
7673
7674         if (!info->attrs[NL80211_ATTR_MAC])
7675                 return -EINVAL;
7676
7677         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7678
7679         if (!rdev->ops->get_mpath)
7680                 return -EOPNOTSUPP;
7681
7682         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7683                 return -EOPNOTSUPP;
7684
7685         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7686         if (err)
7687                 return err;
7688
7689         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7690         if (!msg)
7691                 return -ENOMEM;
7692
7693         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7694                                  dev, dst, next_hop, &pinfo) < 0) {
7695                 nlmsg_free(msg);
7696                 return -ENOBUFS;
7697         }
7698
7699         return genlmsg_reply(msg, info);
7700 }
7701
7702 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7703 {
7704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7705         struct net_device *dev = info->user_ptr[1];
7706         u8 *dst = NULL;
7707         u8 *next_hop = NULL;
7708
7709         if (!info->attrs[NL80211_ATTR_MAC])
7710                 return -EINVAL;
7711
7712         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7713                 return -EINVAL;
7714
7715         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7716         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7717
7718         if (!rdev->ops->change_mpath)
7719                 return -EOPNOTSUPP;
7720
7721         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7722                 return -EOPNOTSUPP;
7723
7724         return rdev_change_mpath(rdev, dev, dst, next_hop);
7725 }
7726
7727 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7728 {
7729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7730         struct net_device *dev = info->user_ptr[1];
7731         u8 *dst = NULL;
7732         u8 *next_hop = NULL;
7733
7734         if (!info->attrs[NL80211_ATTR_MAC])
7735                 return -EINVAL;
7736
7737         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7738                 return -EINVAL;
7739
7740         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7741         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7742
7743         if (!rdev->ops->add_mpath)
7744                 return -EOPNOTSUPP;
7745
7746         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7747                 return -EOPNOTSUPP;
7748
7749         return rdev_add_mpath(rdev, dev, dst, next_hop);
7750 }
7751
7752 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7753 {
7754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7755         struct net_device *dev = info->user_ptr[1];
7756         u8 *dst = NULL;
7757
7758         if (info->attrs[NL80211_ATTR_MAC])
7759                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7760
7761         if (!rdev->ops->del_mpath)
7762                 return -EOPNOTSUPP;
7763
7764         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7765                 return -EOPNOTSUPP;
7766
7767         return rdev_del_mpath(rdev, dev, dst);
7768 }
7769
7770 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7771 {
7772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7773         int err;
7774         struct net_device *dev = info->user_ptr[1];
7775         struct mpath_info pinfo;
7776         struct sk_buff *msg;
7777         u8 *dst = NULL;
7778         u8 mpp[ETH_ALEN];
7779
7780         memset(&pinfo, 0, sizeof(pinfo));
7781
7782         if (!info->attrs[NL80211_ATTR_MAC])
7783                 return -EINVAL;
7784
7785         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7786
7787         if (!rdev->ops->get_mpp)
7788                 return -EOPNOTSUPP;
7789
7790         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7791                 return -EOPNOTSUPP;
7792
7793         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7794         if (err)
7795                 return err;
7796
7797         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7798         if (!msg)
7799                 return -ENOMEM;
7800
7801         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7802                                dev, dst, mpp, &pinfo) < 0) {
7803                 nlmsg_free(msg);
7804                 return -ENOBUFS;
7805         }
7806
7807         return genlmsg_reply(msg, info);
7808 }
7809
7810 static int nl80211_dump_mpp(struct sk_buff *skb,
7811                             struct netlink_callback *cb)
7812 {
7813         struct mpath_info pinfo;
7814         struct cfg80211_registered_device *rdev;
7815         struct wireless_dev *wdev;
7816         u8 dst[ETH_ALEN];
7817         u8 mpp[ETH_ALEN];
7818         int path_idx = cb->args[2];
7819         int err;
7820
7821         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7822         if (err)
7823                 return err;
7824         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7825         __acquire(&rdev->wiphy.mtx);
7826
7827         if (!rdev->ops->dump_mpp) {
7828                 err = -EOPNOTSUPP;
7829                 goto out_err;
7830         }
7831
7832         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7833                 err = -EOPNOTSUPP;
7834                 goto out_err;
7835         }
7836
7837         while (1) {
7838                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7839                                     mpp, &pinfo);
7840                 if (err == -ENOENT)
7841                         break;
7842                 if (err)
7843                         goto out_err;
7844
7845                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7846                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7847                                        wdev->netdev, dst, mpp,
7848                                        &pinfo) < 0)
7849                         goto out;
7850
7851                 path_idx++;
7852         }
7853
7854  out:
7855         cb->args[2] = path_idx;
7856         err = skb->len;
7857  out_err:
7858         wiphy_unlock(&rdev->wiphy);
7859         return err;
7860 }
7861
7862 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7863 {
7864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7865         struct net_device *dev = info->user_ptr[1];
7866         struct wireless_dev *wdev = dev->ieee80211_ptr;
7867         struct bss_parameters params;
7868         int err;
7869
7870         memset(&params, 0, sizeof(params));
7871         params.link_id = nl80211_link_id_or_invalid(info->attrs);
7872         /* default to not changing parameters */
7873         params.use_cts_prot = -1;
7874         params.use_short_preamble = -1;
7875         params.use_short_slot_time = -1;
7876         params.ap_isolate = -1;
7877         params.ht_opmode = -1;
7878         params.p2p_ctwindow = -1;
7879         params.p2p_opp_ps = -1;
7880
7881         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7882                 params.use_cts_prot =
7883                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7884         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7885                 params.use_short_preamble =
7886                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7887         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7888                 params.use_short_slot_time =
7889                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7890         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7891                 params.basic_rates =
7892                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7893                 params.basic_rates_len =
7894                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7895         }
7896         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7897                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7898         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7899                 params.ht_opmode =
7900                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7901
7902         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7903                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7904                         return -EINVAL;
7905                 params.p2p_ctwindow =
7906                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7907                 if (params.p2p_ctwindow != 0 &&
7908                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7909                         return -EINVAL;
7910         }
7911
7912         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7913                 u8 tmp;
7914
7915                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7916                         return -EINVAL;
7917                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7918                 params.p2p_opp_ps = tmp;
7919                 if (params.p2p_opp_ps &&
7920                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7921                         return -EINVAL;
7922         }
7923
7924         if (!rdev->ops->change_bss)
7925                 return -EOPNOTSUPP;
7926
7927         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7928             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7929                 return -EOPNOTSUPP;
7930
7931         wdev_lock(wdev);
7932         err = rdev_change_bss(rdev, dev, &params);
7933         wdev_unlock(wdev);
7934
7935         return err;
7936 }
7937
7938 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7939 {
7940         char *data = NULL;
7941         bool is_indoor;
7942         enum nl80211_user_reg_hint_type user_reg_hint_type;
7943         u32 owner_nlportid;
7944
7945         /*
7946          * You should only get this when cfg80211 hasn't yet initialized
7947          * completely when built-in to the kernel right between the time
7948          * window between nl80211_init() and regulatory_init(), if that is
7949          * even possible.
7950          */
7951         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7952                 return -EINPROGRESS;
7953
7954         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7955                 user_reg_hint_type =
7956                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7957         else
7958                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7959
7960         switch (user_reg_hint_type) {
7961         case NL80211_USER_REG_HINT_USER:
7962         case NL80211_USER_REG_HINT_CELL_BASE:
7963                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7964                         return -EINVAL;
7965
7966                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7967                 return regulatory_hint_user(data, user_reg_hint_type);
7968         case NL80211_USER_REG_HINT_INDOOR:
7969                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7970                         owner_nlportid = info->snd_portid;
7971                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7972                 } else {
7973                         owner_nlportid = 0;
7974                         is_indoor = true;
7975                 }
7976
7977                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7978         default:
7979                 return -EINVAL;
7980         }
7981 }
7982
7983 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7984 {
7985         return reg_reload_regdb();
7986 }
7987
7988 static int nl80211_get_mesh_config(struct sk_buff *skb,
7989                                    struct genl_info *info)
7990 {
7991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7992         struct net_device *dev = info->user_ptr[1];
7993         struct wireless_dev *wdev = dev->ieee80211_ptr;
7994         struct mesh_config cur_params;
7995         int err = 0;
7996         void *hdr;
7997         struct nlattr *pinfoattr;
7998         struct sk_buff *msg;
7999
8000         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8001                 return -EOPNOTSUPP;
8002
8003         if (!rdev->ops->get_mesh_config)
8004                 return -EOPNOTSUPP;
8005
8006         wdev_lock(wdev);
8007         /* If not connected, get default parameters */
8008         if (!wdev->u.mesh.id_len)
8009                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8010         else
8011                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8012         wdev_unlock(wdev);
8013
8014         if (err)
8015                 return err;
8016
8017         /* Draw up a netlink message to send back */
8018         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8019         if (!msg)
8020                 return -ENOMEM;
8021         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8022                              NL80211_CMD_GET_MESH_CONFIG);
8023         if (!hdr)
8024                 goto out;
8025         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8026         if (!pinfoattr)
8027                 goto nla_put_failure;
8028         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8029             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8030                         cur_params.dot11MeshRetryTimeout) ||
8031             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8032                         cur_params.dot11MeshConfirmTimeout) ||
8033             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8034                         cur_params.dot11MeshHoldingTimeout) ||
8035             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8036                         cur_params.dot11MeshMaxPeerLinks) ||
8037             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8038                        cur_params.dot11MeshMaxRetries) ||
8039             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8040                        cur_params.dot11MeshTTL) ||
8041             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8042                        cur_params.element_ttl) ||
8043             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8044                        cur_params.auto_open_plinks) ||
8045             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8046                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8047             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8048                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8049             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8050                         cur_params.path_refresh_time) ||
8051             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8052                         cur_params.min_discovery_timeout) ||
8053             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8054                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8055             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8056                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8057             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8058                         cur_params.dot11MeshHWMPperrMinInterval) ||
8059             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8060                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8061             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8062                        cur_params.dot11MeshHWMPRootMode) ||
8063             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8064                         cur_params.dot11MeshHWMPRannInterval) ||
8065             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8066                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8067             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8068                        cur_params.dot11MeshForwarding) ||
8069             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8070                         cur_params.rssi_threshold) ||
8071             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8072                         cur_params.ht_opmode) ||
8073             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8074                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8075             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8076                         cur_params.dot11MeshHWMProotInterval) ||
8077             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8078                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8079             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8080                         cur_params.power_mode) ||
8081             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8082                         cur_params.dot11MeshAwakeWindowDuration) ||
8083             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8084                         cur_params.plink_timeout) ||
8085             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8086                        cur_params.dot11MeshConnectedToMeshGate) ||
8087             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8088                        cur_params.dot11MeshNolearn) ||
8089             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8090                        cur_params.dot11MeshConnectedToAuthServer))
8091                 goto nla_put_failure;
8092         nla_nest_end(msg, pinfoattr);
8093         genlmsg_end(msg, hdr);
8094         return genlmsg_reply(msg, info);
8095
8096  nla_put_failure:
8097  out:
8098         nlmsg_free(msg);
8099         return -ENOBUFS;
8100 }
8101
8102 static const struct nla_policy
8103 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8104         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8105                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8106         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8107                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8108         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8109                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8110         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8111                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8112         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8113         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8114         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8115         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8116         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8117                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8118         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8119         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8120         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8121         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8122         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8123                 NLA_POLICY_MIN(NLA_U16, 1),
8124         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8125                 NLA_POLICY_MIN(NLA_U16, 1),
8126         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8127                 NLA_POLICY_MIN(NLA_U16, 1),
8128         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8129         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8130                 NLA_POLICY_MIN(NLA_U16, 1),
8131         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8132         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8133         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8134                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8135         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8136         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8137         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8138                 NLA_POLICY_MIN(NLA_U16, 1),
8139         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8140                 NLA_POLICY_MIN(NLA_U16, 1),
8141         [NL80211_MESHCONF_POWER_MODE] =
8142                 NLA_POLICY_RANGE(NLA_U32,
8143                                  NL80211_MESH_POWER_ACTIVE,
8144                                  NL80211_MESH_POWER_MAX),
8145         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8146         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8147         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8148         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8149         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8150 };
8151
8152 static const struct nla_policy
8153         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8154         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8155         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8156         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8157         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8158         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8159         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8160         [NL80211_MESH_SETUP_IE] =
8161                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8162                                        IEEE80211_MAX_DATA_LEN),
8163         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8164 };
8165
8166 static int nl80211_parse_mesh_config(struct genl_info *info,
8167                                      struct mesh_config *cfg,
8168                                      u32 *mask_out)
8169 {
8170         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8171         u32 mask = 0;
8172         u16 ht_opmode;
8173
8174 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8175 do {                                                                    \
8176         if (tb[attr]) {                                                 \
8177                 cfg->param = fn(tb[attr]);                              \
8178                 mask |= BIT((attr) - 1);                                \
8179         }                                                               \
8180 } while (0)
8181
8182         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8183                 return -EINVAL;
8184         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8185                 return -EINVAL;
8186
8187         /* This makes sure that there aren't more than 32 mesh config
8188          * parameters (otherwise our bitfield scheme would not work.) */
8189         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8190
8191         /* Fill in the params struct */
8192         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8193                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8195                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8196                                   nla_get_u16);
8197         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8198                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8199                                   nla_get_u16);
8200         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8201                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8202                                   nla_get_u16);
8203         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8204                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8205         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8206                                   NL80211_MESHCONF_TTL, nla_get_u8);
8207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8208                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8210                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8211                                   nla_get_u8);
8212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8213                                   mask,
8214                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8215                                   nla_get_u32);
8216         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8217                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8218                                   nla_get_u8);
8219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8220                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8221                                   nla_get_u32);
8222         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8223             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8224                 return -EINVAL;
8225         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8226                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8227                                   nla_get_u16);
8228         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8229                                   mask,
8230                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8231                                   nla_get_u32);
8232         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8233             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8234              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8235                 return -EINVAL;
8236         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8237                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8238                                   nla_get_u16);
8239         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8240                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8241                                   nla_get_u16);
8242         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8243                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8244                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8245                                   nla_get_u16);
8246         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8247                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8248         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8249                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8250                                   nla_get_u16);
8251         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8252                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8253                                   nla_get_u8);
8254         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8255                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8256         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8257                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8258                                   nla_get_s32);
8259         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8260                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8261                                   nla_get_u8);
8262         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8263                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8264                                   nla_get_u8);
8265         /*
8266          * Check HT operation mode based on
8267          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8268          */
8269         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8270                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8271
8272                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8273                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8274                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8275                         return -EINVAL;
8276
8277                 /* NON_HT_STA bit is reserved, but some programs set it */
8278                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8279
8280                 cfg->ht_opmode = ht_opmode;
8281                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8282         }
8283         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8284                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8285                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8286                                   nla_get_u32);
8287         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8288             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8289              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8290                 return -EINVAL;
8291         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8292                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8293                                   nla_get_u16);
8294         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8295                                   mask,
8296                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8297                                   nla_get_u16);
8298         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8299                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8300         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8301                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8302         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8303                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8304         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8305                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8306         if (mask_out)
8307                 *mask_out = mask;
8308
8309         return 0;
8310
8311 #undef FILL_IN_MESH_PARAM_IF_SET
8312 }
8313
8314 static int nl80211_parse_mesh_setup(struct genl_info *info,
8315                                      struct mesh_setup *setup)
8316 {
8317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8318         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8319
8320         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8321                 return -EINVAL;
8322         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8323                 return -EINVAL;
8324
8325         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8326                 setup->sync_method =
8327                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8328                  IEEE80211_SYNC_METHOD_VENDOR :
8329                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8330
8331         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8332                 setup->path_sel_proto =
8333                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8334                  IEEE80211_PATH_PROTOCOL_VENDOR :
8335                  IEEE80211_PATH_PROTOCOL_HWMP;
8336
8337         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8338                 setup->path_metric =
8339                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8340                  IEEE80211_PATH_METRIC_VENDOR :
8341                  IEEE80211_PATH_METRIC_AIRTIME;
8342
8343         if (tb[NL80211_MESH_SETUP_IE]) {
8344                 struct nlattr *ieattr =
8345                         tb[NL80211_MESH_SETUP_IE];
8346                 setup->ie = nla_data(ieattr);
8347                 setup->ie_len = nla_len(ieattr);
8348         }
8349         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8350             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8351                 return -EINVAL;
8352         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8353         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8354         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8355         if (setup->is_secure)
8356                 setup->user_mpm = true;
8357
8358         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8359                 if (!setup->user_mpm)
8360                         return -EINVAL;
8361                 setup->auth_id =
8362                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8363         }
8364
8365         return 0;
8366 }
8367
8368 static int nl80211_update_mesh_config(struct sk_buff *skb,
8369                                       struct genl_info *info)
8370 {
8371         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8372         struct net_device *dev = info->user_ptr[1];
8373         struct wireless_dev *wdev = dev->ieee80211_ptr;
8374         struct mesh_config cfg;
8375         u32 mask;
8376         int err;
8377
8378         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8379                 return -EOPNOTSUPP;
8380
8381         if (!rdev->ops->update_mesh_config)
8382                 return -EOPNOTSUPP;
8383
8384         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8385         if (err)
8386                 return err;
8387
8388         wdev_lock(wdev);
8389         if (!wdev->u.mesh.id_len)
8390                 err = -ENOLINK;
8391
8392         if (!err)
8393                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8394
8395         wdev_unlock(wdev);
8396
8397         return err;
8398 }
8399
8400 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8401                               struct sk_buff *msg)
8402 {
8403         struct nlattr *nl_reg_rules;
8404         unsigned int i;
8405
8406         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8407             (regdom->dfs_region &&
8408              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8409                 goto nla_put_failure;
8410
8411         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8412         if (!nl_reg_rules)
8413                 goto nla_put_failure;
8414
8415         for (i = 0; i < regdom->n_reg_rules; i++) {
8416                 struct nlattr *nl_reg_rule;
8417                 const struct ieee80211_reg_rule *reg_rule;
8418                 const struct ieee80211_freq_range *freq_range;
8419                 const struct ieee80211_power_rule *power_rule;
8420                 unsigned int max_bandwidth_khz;
8421
8422                 reg_rule = &regdom->reg_rules[i];
8423                 freq_range = &reg_rule->freq_range;
8424                 power_rule = &reg_rule->power_rule;
8425
8426                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8427                 if (!nl_reg_rule)
8428                         goto nla_put_failure;
8429
8430                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8431                 if (!max_bandwidth_khz)
8432                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8433                                                                   reg_rule);
8434
8435                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8436                                 reg_rule->flags) ||
8437                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8438                                 freq_range->start_freq_khz) ||
8439                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8440                                 freq_range->end_freq_khz) ||
8441                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8442                                 max_bandwidth_khz) ||
8443                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8444                                 power_rule->max_antenna_gain) ||
8445                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8446                                 power_rule->max_eirp) ||
8447                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8448                                 reg_rule->dfs_cac_ms))
8449                         goto nla_put_failure;
8450
8451                 nla_nest_end(msg, nl_reg_rule);
8452         }
8453
8454         nla_nest_end(msg, nl_reg_rules);
8455         return 0;
8456
8457 nla_put_failure:
8458         return -EMSGSIZE;
8459 }
8460
8461 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8462 {
8463         const struct ieee80211_regdomain *regdom = NULL;
8464         struct cfg80211_registered_device *rdev;
8465         struct wiphy *wiphy = NULL;
8466         struct sk_buff *msg;
8467         int err = -EMSGSIZE;
8468         void *hdr;
8469
8470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8471         if (!msg)
8472                 return -ENOBUFS;
8473
8474         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8475                              NL80211_CMD_GET_REG);
8476         if (!hdr)
8477                 goto put_failure;
8478
8479         rtnl_lock();
8480
8481         if (info->attrs[NL80211_ATTR_WIPHY]) {
8482                 bool self_managed;
8483
8484                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8485                 if (IS_ERR(rdev)) {
8486                         err = PTR_ERR(rdev);
8487                         goto nla_put_failure;
8488                 }
8489
8490                 wiphy = &rdev->wiphy;
8491                 self_managed = wiphy->regulatory_flags &
8492                                REGULATORY_WIPHY_SELF_MANAGED;
8493
8494                 rcu_read_lock();
8495
8496                 regdom = get_wiphy_regdom(wiphy);
8497
8498                 /* a self-managed-reg device must have a private regdom */
8499                 if (WARN_ON(!regdom && self_managed)) {
8500                         err = -EINVAL;
8501                         goto nla_put_failure_rcu;
8502                 }
8503
8504                 if (regdom &&
8505                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8506                         goto nla_put_failure_rcu;
8507         } else {
8508                 rcu_read_lock();
8509         }
8510
8511         if (!wiphy && reg_last_request_cell_base() &&
8512             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8513                         NL80211_USER_REG_HINT_CELL_BASE))
8514                 goto nla_put_failure_rcu;
8515
8516         if (!regdom)
8517                 regdom = rcu_dereference(cfg80211_regdomain);
8518
8519         if (nl80211_put_regdom(regdom, msg))
8520                 goto nla_put_failure_rcu;
8521
8522         rcu_read_unlock();
8523
8524         genlmsg_end(msg, hdr);
8525         rtnl_unlock();
8526         return genlmsg_reply(msg, info);
8527
8528 nla_put_failure_rcu:
8529         rcu_read_unlock();
8530 nla_put_failure:
8531         rtnl_unlock();
8532 put_failure:
8533         nlmsg_free(msg);
8534         return err;
8535 }
8536
8537 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8538                                u32 seq, int flags, struct wiphy *wiphy,
8539                                const struct ieee80211_regdomain *regdom)
8540 {
8541         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8542                                    NL80211_CMD_GET_REG);
8543
8544         if (!hdr)
8545                 return -1;
8546
8547         genl_dump_check_consistent(cb, hdr);
8548
8549         if (nl80211_put_regdom(regdom, msg))
8550                 goto nla_put_failure;
8551
8552         if (!wiphy && reg_last_request_cell_base() &&
8553             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8554                         NL80211_USER_REG_HINT_CELL_BASE))
8555                 goto nla_put_failure;
8556
8557         if (wiphy &&
8558             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8559                 goto nla_put_failure;
8560
8561         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8562             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8563                 goto nla_put_failure;
8564
8565         genlmsg_end(msg, hdr);
8566         return 0;
8567
8568 nla_put_failure:
8569         genlmsg_cancel(msg, hdr);
8570         return -EMSGSIZE;
8571 }
8572
8573 static int nl80211_get_reg_dump(struct sk_buff *skb,
8574                                 struct netlink_callback *cb)
8575 {
8576         const struct ieee80211_regdomain *regdom = NULL;
8577         struct cfg80211_registered_device *rdev;
8578         int err, reg_idx, start = cb->args[2];
8579
8580         rcu_read_lock();
8581
8582         if (cfg80211_regdomain && start == 0) {
8583                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8584                                           NLM_F_MULTI, NULL,
8585                                           rcu_dereference(cfg80211_regdomain));
8586                 if (err < 0)
8587                         goto out_err;
8588         }
8589
8590         /* the global regdom is idx 0 */
8591         reg_idx = 1;
8592         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8593                 regdom = get_wiphy_regdom(&rdev->wiphy);
8594                 if (!regdom)
8595                         continue;
8596
8597                 if (++reg_idx <= start)
8598                         continue;
8599
8600                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8601                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8602                 if (err < 0) {
8603                         reg_idx--;
8604                         break;
8605                 }
8606         }
8607
8608         cb->args[2] = reg_idx;
8609         err = skb->len;
8610 out_err:
8611         rcu_read_unlock();
8612         return err;
8613 }
8614
8615 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8616 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8617         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8618         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8619         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8620         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8621         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8622         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8623         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8624 };
8625
8626 static int parse_reg_rule(struct nlattr *tb[],
8627         struct ieee80211_reg_rule *reg_rule)
8628 {
8629         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8630         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8631
8632         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8633                 return -EINVAL;
8634         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8635                 return -EINVAL;
8636         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8637                 return -EINVAL;
8638         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8639                 return -EINVAL;
8640         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8641                 return -EINVAL;
8642
8643         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8644
8645         freq_range->start_freq_khz =
8646                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8647         freq_range->end_freq_khz =
8648                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8649         freq_range->max_bandwidth_khz =
8650                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8651
8652         power_rule->max_eirp =
8653                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8654
8655         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8656                 power_rule->max_antenna_gain =
8657                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8658
8659         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8660                 reg_rule->dfs_cac_ms =
8661                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8662
8663         return 0;
8664 }
8665
8666 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8667 {
8668         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8669         struct nlattr *nl_reg_rule;
8670         char *alpha2;
8671         int rem_reg_rules, r;
8672         u32 num_rules = 0, rule_idx = 0;
8673         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8674         struct ieee80211_regdomain *rd;
8675
8676         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8677                 return -EINVAL;
8678
8679         if (!info->attrs[NL80211_ATTR_REG_RULES])
8680                 return -EINVAL;
8681
8682         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8683
8684         if (info->attrs[NL80211_ATTR_DFS_REGION])
8685                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8686
8687         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8688                             rem_reg_rules) {
8689                 num_rules++;
8690                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8691                         return -EINVAL;
8692         }
8693
8694         rtnl_lock();
8695         if (!reg_is_valid_request(alpha2)) {
8696                 r = -EINVAL;
8697                 goto out;
8698         }
8699
8700         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8701         if (!rd) {
8702                 r = -ENOMEM;
8703                 goto out;
8704         }
8705
8706         rd->n_reg_rules = num_rules;
8707         rd->alpha2[0] = alpha2[0];
8708         rd->alpha2[1] = alpha2[1];
8709
8710         /*
8711          * Disable DFS master mode if the DFS region was
8712          * not supported or known on this kernel.
8713          */
8714         if (reg_supported_dfs_region(dfs_region))
8715                 rd->dfs_region = dfs_region;
8716
8717         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8718                             rem_reg_rules) {
8719                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8720                                                 nl_reg_rule, reg_rule_policy,
8721                                                 info->extack);
8722                 if (r)
8723                         goto bad_reg;
8724                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8725                 if (r)
8726                         goto bad_reg;
8727
8728                 rule_idx++;
8729
8730                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8731                         r = -EINVAL;
8732                         goto bad_reg;
8733                 }
8734         }
8735
8736         r = set_regdom(rd, REGD_SOURCE_CRDA);
8737         /* set_regdom takes ownership of rd */
8738         rd = NULL;
8739  bad_reg:
8740         kfree(rd);
8741  out:
8742         rtnl_unlock();
8743         return r;
8744 }
8745 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8746
8747 static int validate_scan_freqs(struct nlattr *freqs)
8748 {
8749         struct nlattr *attr1, *attr2;
8750         int n_channels = 0, tmp1, tmp2;
8751
8752         nla_for_each_nested(attr1, freqs, tmp1)
8753                 if (nla_len(attr1) != sizeof(u32))
8754                         return 0;
8755
8756         nla_for_each_nested(attr1, freqs, tmp1) {
8757                 n_channels++;
8758                 /*
8759                  * Some hardware has a limited channel list for
8760                  * scanning, and it is pretty much nonsensical
8761                  * to scan for a channel twice, so disallow that
8762                  * and don't require drivers to check that the
8763                  * channel list they get isn't longer than what
8764                  * they can scan, as long as they can scan all
8765                  * the channels they registered at once.
8766                  */
8767                 nla_for_each_nested(attr2, freqs, tmp2)
8768                         if (attr1 != attr2 &&
8769                             nla_get_u32(attr1) == nla_get_u32(attr2))
8770                                 return 0;
8771         }
8772
8773         return n_channels;
8774 }
8775
8776 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8777 {
8778         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8779 }
8780
8781 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8782                             struct cfg80211_bss_selection *bss_select)
8783 {
8784         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8785         struct nlattr *nest;
8786         int err;
8787         bool found = false;
8788         int i;
8789
8790         /* only process one nested attribute */
8791         nest = nla_data(nla);
8792         if (!nla_ok(nest, nla_len(nest)))
8793                 return -EINVAL;
8794
8795         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8796                                           nest, nl80211_bss_select_policy,
8797                                           NULL);
8798         if (err)
8799                 return err;
8800
8801         /* only one attribute may be given */
8802         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8803                 if (attr[i]) {
8804                         if (found)
8805                                 return -EINVAL;
8806                         found = true;
8807                 }
8808         }
8809
8810         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8811
8812         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8813                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8814
8815         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8816                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8817                 bss_select->param.band_pref =
8818                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8819                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8820                         return -EINVAL;
8821         }
8822
8823         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8824                 struct nl80211_bss_select_rssi_adjust *adj_param;
8825
8826                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8827                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8828                 bss_select->param.adjust.band = adj_param->band;
8829                 bss_select->param.adjust.delta = adj_param->delta;
8830                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8831                         return -EINVAL;
8832         }
8833
8834         /* user-space did not provide behaviour attribute */
8835         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8836                 return -EINVAL;
8837
8838         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8839                 return -EINVAL;
8840
8841         return 0;
8842 }
8843
8844 int nl80211_parse_random_mac(struct nlattr **attrs,
8845                              u8 *mac_addr, u8 *mac_addr_mask)
8846 {
8847         int i;
8848
8849         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8850                 eth_zero_addr(mac_addr);
8851                 eth_zero_addr(mac_addr_mask);
8852                 mac_addr[0] = 0x2;
8853                 mac_addr_mask[0] = 0x3;
8854
8855                 return 0;
8856         }
8857
8858         /* need both or none */
8859         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8860                 return -EINVAL;
8861
8862         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8863         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8864
8865         /* don't allow or configure an mcast address */
8866         if (!is_multicast_ether_addr(mac_addr_mask) ||
8867             is_multicast_ether_addr(mac_addr))
8868                 return -EINVAL;
8869
8870         /*
8871          * allow users to pass a MAC address that has bits set outside
8872          * of the mask, but don't bother drivers with having to deal
8873          * with such bits
8874          */
8875         for (i = 0; i < ETH_ALEN; i++)
8876                 mac_addr[i] &= mac_addr_mask[i];
8877
8878         return 0;
8879 }
8880
8881 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8882                                               struct ieee80211_channel *chan)
8883 {
8884         unsigned int link_id;
8885         bool all_ok = true;
8886
8887         ASSERT_WDEV_LOCK(wdev);
8888
8889         if (!cfg80211_beaconing_iface_active(wdev))
8890                 return true;
8891
8892         /*
8893          * FIXME: check if we have a free HW resource/link for chan
8894          *
8895          * This, as well as the FIXME below, requires knowing the link
8896          * capabilities of the hardware.
8897          */
8898
8899         /* we cannot leave radar channels */
8900         for_each_valid_link(wdev, link_id) {
8901                 struct cfg80211_chan_def *chandef;
8902
8903                 chandef = wdev_chandef(wdev, link_id);
8904                 if (!chandef)
8905                         continue;
8906
8907                 /*
8908                  * FIXME: don't require all_ok, but rather check only the
8909                  *        correct HW resource/link onto which 'chan' falls,
8910                  *        as only that link leaves the channel for doing
8911                  *        the off-channel operation.
8912                  */
8913
8914                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
8915                         all_ok = false;
8916         }
8917
8918         if (all_ok)
8919                 return true;
8920
8921         return regulatory_pre_cac_allowed(wdev->wiphy);
8922 }
8923
8924 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8925                                     enum nl80211_ext_feature_index feat)
8926 {
8927         if (!(flags & flag))
8928                 return true;
8929         if (wiphy_ext_feature_isset(wiphy, feat))
8930                 return true;
8931         return false;
8932 }
8933
8934 static int
8935 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8936                          void *request, struct nlattr **attrs,
8937                          bool is_sched_scan)
8938 {
8939         u8 *mac_addr, *mac_addr_mask;
8940         u32 *flags;
8941         enum nl80211_feature_flags randomness_flag;
8942
8943         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8944                 return 0;
8945
8946         if (is_sched_scan) {
8947                 struct cfg80211_sched_scan_request *req = request;
8948
8949                 randomness_flag = wdev ?
8950                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8951                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8952                 flags = &req->flags;
8953                 mac_addr = req->mac_addr;
8954                 mac_addr_mask = req->mac_addr_mask;
8955         } else {
8956                 struct cfg80211_scan_request *req = request;
8957
8958                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8959                 flags = &req->flags;
8960                 mac_addr = req->mac_addr;
8961                 mac_addr_mask = req->mac_addr_mask;
8962         }
8963
8964         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8965
8966         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8967              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8968             !nl80211_check_scan_feat(wiphy, *flags,
8969                                      NL80211_SCAN_FLAG_LOW_SPAN,
8970                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8971             !nl80211_check_scan_feat(wiphy, *flags,
8972                                      NL80211_SCAN_FLAG_LOW_POWER,
8973                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8974             !nl80211_check_scan_feat(wiphy, *flags,
8975                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8976                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8977             !nl80211_check_scan_feat(wiphy, *flags,
8978                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8979                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8980             !nl80211_check_scan_feat(wiphy, *flags,
8981                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8982                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8983             !nl80211_check_scan_feat(wiphy, *flags,
8984                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8985                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8986             !nl80211_check_scan_feat(wiphy, *flags,
8987                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8988                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8989             !nl80211_check_scan_feat(wiphy, *flags,
8990                                      NL80211_SCAN_FLAG_RANDOM_SN,
8991                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8992             !nl80211_check_scan_feat(wiphy, *flags,
8993                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8994                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8995                 return -EOPNOTSUPP;
8996
8997         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8998                 int err;
8999
9000                 if (!(wiphy->features & randomness_flag) ||
9001                     (wdev && wdev->connected))
9002                         return -EOPNOTSUPP;
9003
9004                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9005                 if (err)
9006                         return err;
9007         }
9008
9009         return 0;
9010 }
9011
9012 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9013 {
9014         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9015         struct wireless_dev *wdev = info->user_ptr[1];
9016         struct cfg80211_scan_request *request;
9017         struct nlattr *scan_freqs = NULL;
9018         bool scan_freqs_khz = false;
9019         struct nlattr *attr;
9020         struct wiphy *wiphy;
9021         int err, tmp, n_ssids = 0, n_channels, i;
9022         size_t ie_len;
9023
9024         wiphy = &rdev->wiphy;
9025
9026         if (wdev->iftype == NL80211_IFTYPE_NAN)
9027                 return -EOPNOTSUPP;
9028
9029         if (!rdev->ops->scan)
9030                 return -EOPNOTSUPP;
9031
9032         if (rdev->scan_req || rdev->scan_msg)
9033                 return -EBUSY;
9034
9035         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9036                 if (!wiphy_ext_feature_isset(wiphy,
9037                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9038                         return -EOPNOTSUPP;
9039                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9040                 scan_freqs_khz = true;
9041         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9042                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9043
9044         if (scan_freqs) {
9045                 n_channels = validate_scan_freqs(scan_freqs);
9046                 if (!n_channels)
9047                         return -EINVAL;
9048         } else {
9049                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9050         }
9051
9052         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9053                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9054                         n_ssids++;
9055
9056         if (n_ssids > wiphy->max_scan_ssids)
9057                 return -EINVAL;
9058
9059         if (info->attrs[NL80211_ATTR_IE])
9060                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9061         else
9062                 ie_len = 0;
9063
9064         if (ie_len > wiphy->max_scan_ie_len)
9065                 return -EINVAL;
9066
9067         request = kzalloc(sizeof(*request)
9068                         + sizeof(*request->ssids) * n_ssids
9069                         + sizeof(*request->channels) * n_channels
9070                         + ie_len, GFP_KERNEL);
9071         if (!request)
9072                 return -ENOMEM;
9073
9074         if (n_ssids)
9075                 request->ssids = (void *)&request->channels[n_channels];
9076         request->n_ssids = n_ssids;
9077         if (ie_len) {
9078                 if (n_ssids)
9079                         request->ie = (void *)(request->ssids + n_ssids);
9080                 else
9081                         request->ie = (void *)(request->channels + n_channels);
9082         }
9083
9084         i = 0;
9085         if (scan_freqs) {
9086                 /* user specified, bail out if channel not found */
9087                 nla_for_each_nested(attr, scan_freqs, tmp) {
9088                         struct ieee80211_channel *chan;
9089                         int freq = nla_get_u32(attr);
9090
9091                         if (!scan_freqs_khz)
9092                                 freq = MHZ_TO_KHZ(freq);
9093
9094                         chan = ieee80211_get_channel_khz(wiphy, freq);
9095                         if (!chan) {
9096                                 err = -EINVAL;
9097                                 goto out_free;
9098                         }
9099
9100                         /* ignore disabled channels */
9101                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9102                                 continue;
9103
9104                         request->channels[i] = chan;
9105                         i++;
9106                 }
9107         } else {
9108                 enum nl80211_band band;
9109
9110                 /* all channels */
9111                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9112                         int j;
9113
9114                         if (!wiphy->bands[band])
9115                                 continue;
9116                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9117                                 struct ieee80211_channel *chan;
9118
9119                                 chan = &wiphy->bands[band]->channels[j];
9120
9121                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9122                                         continue;
9123
9124                                 request->channels[i] = chan;
9125                                 i++;
9126                         }
9127                 }
9128         }
9129
9130         if (!i) {
9131                 err = -EINVAL;
9132                 goto out_free;
9133         }
9134
9135         request->n_channels = i;
9136
9137         wdev_lock(wdev);
9138         for (i = 0; i < request->n_channels; i++) {
9139                 struct ieee80211_channel *chan = request->channels[i];
9140
9141                 /* if we can go off-channel to the target channel we're good */
9142                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9143                         continue;
9144
9145                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9146                         wdev_unlock(wdev);
9147                         err = -EBUSY;
9148                         goto out_free;
9149                 }
9150         }
9151         wdev_unlock(wdev);
9152
9153         i = 0;
9154         if (n_ssids) {
9155                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9156                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9157                                 err = -EINVAL;
9158                                 goto out_free;
9159                         }
9160                         request->ssids[i].ssid_len = nla_len(attr);
9161                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9162                         i++;
9163                 }
9164         }
9165
9166         if (info->attrs[NL80211_ATTR_IE]) {
9167                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9168                 memcpy((void *)request->ie,
9169                        nla_data(info->attrs[NL80211_ATTR_IE]),
9170                        request->ie_len);
9171         }
9172
9173         for (i = 0; i < NUM_NL80211_BANDS; i++)
9174                 if (wiphy->bands[i])
9175                         request->rates[i] =
9176                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9177
9178         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9179                 nla_for_each_nested(attr,
9180                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9181                                     tmp) {
9182                         enum nl80211_band band = nla_type(attr);
9183
9184                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9185                                 err = -EINVAL;
9186                                 goto out_free;
9187                         }
9188
9189                         if (!wiphy->bands[band])
9190                                 continue;
9191
9192                         err = ieee80211_get_ratemask(wiphy->bands[band],
9193                                                      nla_data(attr),
9194                                                      nla_len(attr),
9195                                                      &request->rates[band]);
9196                         if (err)
9197                                 goto out_free;
9198                 }
9199         }
9200
9201         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9202                 request->duration =
9203                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9204                 request->duration_mandatory =
9205                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9206         }
9207
9208         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9209                                        false);
9210         if (err)
9211                 goto out_free;
9212
9213         request->no_cck =
9214                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9215
9216         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9217          * BSSID to scan for. This was problematic because that same attribute
9218          * was already used for another purpose (local random MAC address). The
9219          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9220          * compatibility with older userspace components, also use the
9221          * NL80211_ATTR_MAC value here if it can be determined to be used for
9222          * the specific BSSID use case instead of the random MAC address
9223          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9224          */
9225         if (info->attrs[NL80211_ATTR_BSSID])
9226                 memcpy(request->bssid,
9227                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9228         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9229                  info->attrs[NL80211_ATTR_MAC])
9230                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9231                        ETH_ALEN);
9232         else
9233                 eth_broadcast_addr(request->bssid);
9234
9235         request->wdev = wdev;
9236         request->wiphy = &rdev->wiphy;
9237         request->scan_start = jiffies;
9238
9239         rdev->scan_req = request;
9240         err = cfg80211_scan(rdev);
9241
9242         if (err)
9243                 goto out_free;
9244
9245         nl80211_send_scan_start(rdev, wdev);
9246         dev_hold(wdev->netdev);
9247
9248         return 0;
9249
9250  out_free:
9251         rdev->scan_req = NULL;
9252         kfree(request);
9253
9254         return err;
9255 }
9256
9257 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9258 {
9259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9260         struct wireless_dev *wdev = info->user_ptr[1];
9261
9262         if (!rdev->ops->abort_scan)
9263                 return -EOPNOTSUPP;
9264
9265         if (rdev->scan_msg)
9266                 return 0;
9267
9268         if (!rdev->scan_req)
9269                 return -ENOENT;
9270
9271         rdev_abort_scan(rdev, wdev);
9272         return 0;
9273 }
9274
9275 static int
9276 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9277                                struct cfg80211_sched_scan_request *request,
9278                                struct nlattr **attrs)
9279 {
9280         int tmp, err, i = 0;
9281         struct nlattr *attr;
9282
9283         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9284                 u32 interval;
9285
9286                 /*
9287                  * If scan plans are not specified,
9288                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9289                  * case one scan plan will be set with the specified scan
9290                  * interval and infinite number of iterations.
9291                  */
9292                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9293                 if (!interval)
9294                         return -EINVAL;
9295
9296                 request->scan_plans[0].interval =
9297                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9298                 if (!request->scan_plans[0].interval)
9299                         return -EINVAL;
9300
9301                 if (request->scan_plans[0].interval >
9302                     wiphy->max_sched_scan_plan_interval)
9303                         request->scan_plans[0].interval =
9304                                 wiphy->max_sched_scan_plan_interval;
9305
9306                 return 0;
9307         }
9308
9309         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9310                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9311
9312                 if (WARN_ON(i >= n_plans))
9313                         return -EINVAL;
9314
9315                 err = nla_parse_nested_deprecated(plan,
9316                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9317                                                   attr, nl80211_plan_policy,
9318                                                   NULL);
9319                 if (err)
9320                         return err;
9321
9322                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9323                         return -EINVAL;
9324
9325                 request->scan_plans[i].interval =
9326                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9327                 if (!request->scan_plans[i].interval ||
9328                     request->scan_plans[i].interval >
9329                     wiphy->max_sched_scan_plan_interval)
9330                         return -EINVAL;
9331
9332                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9333                         request->scan_plans[i].iterations =
9334                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9335                         if (!request->scan_plans[i].iterations ||
9336                             (request->scan_plans[i].iterations >
9337                              wiphy->max_sched_scan_plan_iterations))
9338                                 return -EINVAL;
9339                 } else if (i < n_plans - 1) {
9340                         /*
9341                          * All scan plans but the last one must specify
9342                          * a finite number of iterations
9343                          */
9344                         return -EINVAL;
9345                 }
9346
9347                 i++;
9348         }
9349
9350         /*
9351          * The last scan plan must not specify the number of
9352          * iterations, it is supposed to run infinitely
9353          */
9354         if (request->scan_plans[n_plans - 1].iterations)
9355                 return  -EINVAL;
9356
9357         return 0;
9358 }
9359
9360 static int
9361 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9362                                        struct cfg80211_match_set *match_sets,
9363                                        struct nlattr *tb_band_rssi,
9364                                        s32 rssi_thold)
9365 {
9366         struct nlattr *attr;
9367         int i, tmp, ret = 0;
9368
9369         if (!wiphy_ext_feature_isset(wiphy,
9370                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9371                 if (tb_band_rssi)
9372                         ret = -EOPNOTSUPP;
9373                 else
9374                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9375                                 match_sets->per_band_rssi_thold[i] =
9376                                         NL80211_SCAN_RSSI_THOLD_OFF;
9377                 return ret;
9378         }
9379
9380         for (i = 0; i < NUM_NL80211_BANDS; i++)
9381                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9382
9383         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9384                 enum nl80211_band band = nla_type(attr);
9385
9386                 if (band < 0 || band >= NUM_NL80211_BANDS)
9387                         return -EINVAL;
9388
9389                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9390         }
9391
9392         return 0;
9393 }
9394
9395 static struct cfg80211_sched_scan_request *
9396 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9397                          struct nlattr **attrs, int max_match_sets)
9398 {
9399         struct cfg80211_sched_scan_request *request;
9400         struct nlattr *attr;
9401         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9402         enum nl80211_band band;
9403         size_t ie_len;
9404         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9405         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9406
9407         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9408                 n_channels = validate_scan_freqs(
9409                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9410                 if (!n_channels)
9411                         return ERR_PTR(-EINVAL);
9412         } else {
9413                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9414         }
9415
9416         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9417                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9418                                     tmp)
9419                         n_ssids++;
9420
9421         if (n_ssids > wiphy->max_sched_scan_ssids)
9422                 return ERR_PTR(-EINVAL);
9423
9424         /*
9425          * First, count the number of 'real' matchsets. Due to an issue with
9426          * the old implementation, matchsets containing only the RSSI attribute
9427          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9428          * RSSI for all matchsets, rather than their own matchset for reporting
9429          * all APs with a strong RSSI. This is needed to be compatible with
9430          * older userspace that treated a matchset with only the RSSI as the
9431          * global RSSI for all other matchsets - if there are other matchsets.
9432          */
9433         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9434                 nla_for_each_nested(attr,
9435                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9436                                     tmp) {
9437                         struct nlattr *rssi;
9438
9439                         err = nla_parse_nested_deprecated(tb,
9440                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9441                                                           attr,
9442                                                           nl80211_match_policy,
9443                                                           NULL);
9444                         if (err)
9445                                 return ERR_PTR(err);
9446
9447                         /* SSID and BSSID are mutually exclusive */
9448                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9449                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9450                                 return ERR_PTR(-EINVAL);
9451
9452                         /* add other standalone attributes here */
9453                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9454                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9455                                 n_match_sets++;
9456                                 continue;
9457                         }
9458                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9459                         if (rssi)
9460                                 default_match_rssi = nla_get_s32(rssi);
9461                 }
9462         }
9463
9464         /* However, if there's no other matchset, add the RSSI one */
9465         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9466                 n_match_sets = 1;
9467
9468         if (n_match_sets > max_match_sets)
9469                 return ERR_PTR(-EINVAL);
9470
9471         if (attrs[NL80211_ATTR_IE])
9472                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9473         else
9474                 ie_len = 0;
9475
9476         if (ie_len > wiphy->max_sched_scan_ie_len)
9477                 return ERR_PTR(-EINVAL);
9478
9479         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9480                 /*
9481                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9482                  * each scan plan already specifies its own interval
9483                  */
9484                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9485                         return ERR_PTR(-EINVAL);
9486
9487                 nla_for_each_nested(attr,
9488                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9489                         n_plans++;
9490         } else {
9491                 /*
9492                  * The scan interval attribute is kept for backward
9493                  * compatibility. If no scan plans are specified and sched scan
9494                  * interval is specified, one scan plan will be set with this
9495                  * scan interval and infinite number of iterations.
9496                  */
9497                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9498                         return ERR_PTR(-EINVAL);
9499
9500                 n_plans = 1;
9501         }
9502
9503         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9504                 return ERR_PTR(-EINVAL);
9505
9506         if (!wiphy_ext_feature_isset(
9507                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9508             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9509              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9510                 return ERR_PTR(-EINVAL);
9511
9512         request = kzalloc(sizeof(*request)
9513                         + sizeof(*request->ssids) * n_ssids
9514                         + sizeof(*request->match_sets) * n_match_sets
9515                         + sizeof(*request->scan_plans) * n_plans
9516                         + sizeof(*request->channels) * n_channels
9517                         + ie_len, GFP_KERNEL);
9518         if (!request)
9519                 return ERR_PTR(-ENOMEM);
9520
9521         if (n_ssids)
9522                 request->ssids = (void *)&request->channels[n_channels];
9523         request->n_ssids = n_ssids;
9524         if (ie_len) {
9525                 if (n_ssids)
9526                         request->ie = (void *)(request->ssids + n_ssids);
9527                 else
9528                         request->ie = (void *)(request->channels + n_channels);
9529         }
9530
9531         if (n_match_sets) {
9532                 if (request->ie)
9533                         request->match_sets = (void *)(request->ie + ie_len);
9534                 else if (n_ssids)
9535                         request->match_sets =
9536                                 (void *)(request->ssids + n_ssids);
9537                 else
9538                         request->match_sets =
9539                                 (void *)(request->channels + n_channels);
9540         }
9541         request->n_match_sets = n_match_sets;
9542
9543         if (n_match_sets)
9544                 request->scan_plans = (void *)(request->match_sets +
9545                                                n_match_sets);
9546         else if (request->ie)
9547                 request->scan_plans = (void *)(request->ie + ie_len);
9548         else if (n_ssids)
9549                 request->scan_plans = (void *)(request->ssids + n_ssids);
9550         else
9551                 request->scan_plans = (void *)(request->channels + n_channels);
9552
9553         request->n_scan_plans = n_plans;
9554
9555         i = 0;
9556         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9557                 /* user specified, bail out if channel not found */
9558                 nla_for_each_nested(attr,
9559                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9560                                     tmp) {
9561                         struct ieee80211_channel *chan;
9562
9563                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9564
9565                         if (!chan) {
9566                                 err = -EINVAL;
9567                                 goto out_free;
9568                         }
9569
9570                         /* ignore disabled channels */
9571                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9572                                 continue;
9573
9574                         request->channels[i] = chan;
9575                         i++;
9576                 }
9577         } else {
9578                 /* all channels */
9579                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9580                         int j;
9581
9582                         if (!wiphy->bands[band])
9583                                 continue;
9584                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9585                                 struct ieee80211_channel *chan;
9586
9587                                 chan = &wiphy->bands[band]->channels[j];
9588
9589                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9590                                         continue;
9591
9592                                 request->channels[i] = chan;
9593                                 i++;
9594                         }
9595                 }
9596         }
9597
9598         if (!i) {
9599                 err = -EINVAL;
9600                 goto out_free;
9601         }
9602
9603         request->n_channels = i;
9604
9605         i = 0;
9606         if (n_ssids) {
9607                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9608                                     tmp) {
9609                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9610                                 err = -EINVAL;
9611                                 goto out_free;
9612                         }
9613                         request->ssids[i].ssid_len = nla_len(attr);
9614                         memcpy(request->ssids[i].ssid, nla_data(attr),
9615                                nla_len(attr));
9616                         i++;
9617                 }
9618         }
9619
9620         i = 0;
9621         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9622                 nla_for_each_nested(attr,
9623                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9624                                     tmp) {
9625                         struct nlattr *ssid, *bssid, *rssi;
9626
9627                         err = nla_parse_nested_deprecated(tb,
9628                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9629                                                           attr,
9630                                                           nl80211_match_policy,
9631                                                           NULL);
9632                         if (err)
9633                                 goto out_free;
9634                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9635                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9636
9637                         if (!ssid && !bssid) {
9638                                 i++;
9639                                 continue;
9640                         }
9641
9642                         if (WARN_ON(i >= n_match_sets)) {
9643                                 /* this indicates a programming error,
9644                                  * the loop above should have verified
9645                                  * things properly
9646                                  */
9647                                 err = -EINVAL;
9648                                 goto out_free;
9649                         }
9650
9651                         if (ssid) {
9652                                 memcpy(request->match_sets[i].ssid.ssid,
9653                                        nla_data(ssid), nla_len(ssid));
9654                                 request->match_sets[i].ssid.ssid_len =
9655                                         nla_len(ssid);
9656                         }
9657                         if (bssid)
9658                                 memcpy(request->match_sets[i].bssid,
9659                                        nla_data(bssid), ETH_ALEN);
9660
9661                         /* special attribute - old implementation w/a */
9662                         request->match_sets[i].rssi_thold = default_match_rssi;
9663                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9664                         if (rssi)
9665                                 request->match_sets[i].rssi_thold =
9666                                         nla_get_s32(rssi);
9667
9668                         /* Parse per band RSSI attribute */
9669                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9670                                 &request->match_sets[i],
9671                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9672                                 request->match_sets[i].rssi_thold);
9673                         if (err)
9674                                 goto out_free;
9675
9676                         i++;
9677                 }
9678
9679                 /* there was no other matchset, so the RSSI one is alone */
9680                 if (i == 0 && n_match_sets)
9681                         request->match_sets[0].rssi_thold = default_match_rssi;
9682
9683                 request->min_rssi_thold = INT_MAX;
9684                 for (i = 0; i < n_match_sets; i++)
9685                         request->min_rssi_thold =
9686                                 min(request->match_sets[i].rssi_thold,
9687                                     request->min_rssi_thold);
9688         } else {
9689                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9690         }
9691
9692         if (ie_len) {
9693                 request->ie_len = ie_len;
9694                 memcpy((void *)request->ie,
9695                        nla_data(attrs[NL80211_ATTR_IE]),
9696                        request->ie_len);
9697         }
9698
9699         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9700         if (err)
9701                 goto out_free;
9702
9703         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9704                 request->delay =
9705                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9706
9707         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9708                 request->relative_rssi = nla_get_s8(
9709                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9710                 request->relative_rssi_set = true;
9711         }
9712
9713         if (request->relative_rssi_set &&
9714             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9715                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9716
9717                 rssi_adjust = nla_data(
9718                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9719                 request->rssi_adjust.band = rssi_adjust->band;
9720                 request->rssi_adjust.delta = rssi_adjust->delta;
9721                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9722                         err = -EINVAL;
9723                         goto out_free;
9724                 }
9725         }
9726
9727         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9728         if (err)
9729                 goto out_free;
9730
9731         request->scan_start = jiffies;
9732
9733         return request;
9734
9735 out_free:
9736         kfree(request);
9737         return ERR_PTR(err);
9738 }
9739
9740 static int nl80211_start_sched_scan(struct sk_buff *skb,
9741                                     struct genl_info *info)
9742 {
9743         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9744         struct net_device *dev = info->user_ptr[1];
9745         struct wireless_dev *wdev = dev->ieee80211_ptr;
9746         struct cfg80211_sched_scan_request *sched_scan_req;
9747         bool want_multi;
9748         int err;
9749
9750         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9751                 return -EOPNOTSUPP;
9752
9753         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9754         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9755         if (err)
9756                 return err;
9757
9758         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9759                                                   info->attrs,
9760                                                   rdev->wiphy.max_match_sets);
9761
9762         err = PTR_ERR_OR_ZERO(sched_scan_req);
9763         if (err)
9764                 goto out_err;
9765
9766         /* leave request id zero for legacy request
9767          * or if driver does not support multi-scheduled scan
9768          */
9769         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9770                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9771
9772         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9773         if (err)
9774                 goto out_free;
9775
9776         sched_scan_req->dev = dev;
9777         sched_scan_req->wiphy = &rdev->wiphy;
9778
9779         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9780                 sched_scan_req->owner_nlportid = info->snd_portid;
9781
9782         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9783
9784         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9785         return 0;
9786
9787 out_free:
9788         kfree(sched_scan_req);
9789 out_err:
9790         return err;
9791 }
9792
9793 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9794                                    struct genl_info *info)
9795 {
9796         struct cfg80211_sched_scan_request *req;
9797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9798         u64 cookie;
9799
9800         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9801                 return -EOPNOTSUPP;
9802
9803         if (info->attrs[NL80211_ATTR_COOKIE]) {
9804                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9805                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9806         }
9807
9808         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9809                                      struct cfg80211_sched_scan_request,
9810                                      list);
9811         if (!req || req->reqid ||
9812             (req->owner_nlportid &&
9813              req->owner_nlportid != info->snd_portid))
9814                 return -ENOENT;
9815
9816         return cfg80211_stop_sched_scan_req(rdev, req, false);
9817 }
9818
9819 static int nl80211_start_radar_detection(struct sk_buff *skb,
9820                                          struct genl_info *info)
9821 {
9822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9823         struct net_device *dev = info->user_ptr[1];
9824         struct wireless_dev *wdev = dev->ieee80211_ptr;
9825         struct wiphy *wiphy = wdev->wiphy;
9826         struct cfg80211_chan_def chandef;
9827         enum nl80211_dfs_regions dfs_region;
9828         unsigned int cac_time_ms;
9829         int err = -EINVAL;
9830
9831         flush_delayed_work(&rdev->dfs_update_channels_wk);
9832
9833         wiphy_lock(wiphy);
9834
9835         dfs_region = reg_get_dfs_region(wiphy);
9836         if (dfs_region == NL80211_DFS_UNSET)
9837                 goto unlock;
9838
9839         err = nl80211_parse_chandef(rdev, info, &chandef);
9840         if (err)
9841                 goto unlock;
9842
9843         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9844         if (err < 0)
9845                 goto unlock;
9846
9847         if (err == 0) {
9848                 err = -EINVAL;
9849                 goto unlock;
9850         }
9851
9852         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9853                 err = -EINVAL;
9854                 goto unlock;
9855         }
9856
9857         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9858                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9859                                                                 &chandef);
9860                 goto unlock;
9861         }
9862
9863         if (netif_carrier_ok(dev)) {
9864                 err = -EBUSY;
9865                 goto unlock;
9866         }
9867
9868         if (wdev->cac_started) {
9869                 err = -EBUSY;
9870                 goto unlock;
9871         }
9872
9873         /* CAC start is offloaded to HW and can't be started manually */
9874         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9875                 err = -EOPNOTSUPP;
9876                 goto unlock;
9877         }
9878
9879         if (!rdev->ops->start_radar_detection) {
9880                 err = -EOPNOTSUPP;
9881                 goto unlock;
9882         }
9883
9884         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9885         if (WARN_ON(!cac_time_ms))
9886                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9887
9888         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9889         if (!err) {
9890                 wdev->links[0].ap.chandef = chandef;
9891                 wdev->cac_started = true;
9892                 wdev->cac_start_time = jiffies;
9893                 wdev->cac_time_ms = cac_time_ms;
9894         }
9895 unlock:
9896         wiphy_unlock(wiphy);
9897
9898         return err;
9899 }
9900
9901 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9902                                           struct genl_info *info)
9903 {
9904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9905         struct net_device *dev = info->user_ptr[1];
9906         struct wireless_dev *wdev = dev->ieee80211_ptr;
9907         struct wiphy *wiphy = wdev->wiphy;
9908         struct cfg80211_chan_def chandef;
9909         enum nl80211_dfs_regions dfs_region;
9910         int err;
9911
9912         dfs_region = reg_get_dfs_region(wiphy);
9913         if (dfs_region == NL80211_DFS_UNSET) {
9914                 GENL_SET_ERR_MSG(info,
9915                                  "DFS Region is not set. Unexpected Radar indication");
9916                 return -EINVAL;
9917         }
9918
9919         err = nl80211_parse_chandef(rdev, info, &chandef);
9920         if (err) {
9921                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9922                 return err;
9923         }
9924
9925         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9926         if (err < 0) {
9927                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9928                 return err;
9929         }
9930
9931         if (err == 0) {
9932                 GENL_SET_ERR_MSG(info,
9933                                  "Unexpected Radar indication for chandef/iftype");
9934                 return -EINVAL;
9935         }
9936
9937         /* Do not process this notification if radar is already detected
9938          * by kernel on this channel, and return success.
9939          */
9940         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9941                 return 0;
9942
9943         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9944
9945         cfg80211_sched_dfs_chan_update(rdev);
9946
9947         rdev->radar_chandef = chandef;
9948
9949         /* Propagate this notification to other radios as well */
9950         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9951
9952         return 0;
9953 }
9954
9955 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9956 {
9957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9958         unsigned int link_id = nl80211_link_id(info->attrs);
9959         struct net_device *dev = info->user_ptr[1];
9960         struct wireless_dev *wdev = dev->ieee80211_ptr;
9961         struct cfg80211_csa_settings params;
9962         struct nlattr **csa_attrs = NULL;
9963         int err;
9964         bool need_new_beacon = false;
9965         bool need_handle_dfs_flag = true;
9966         int len, i;
9967         u32 cs_count;
9968
9969         if (!rdev->ops->channel_switch ||
9970             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9971                 return -EOPNOTSUPP;
9972
9973         switch (dev->ieee80211_ptr->iftype) {
9974         case NL80211_IFTYPE_AP:
9975         case NL80211_IFTYPE_P2P_GO:
9976                 need_new_beacon = true;
9977                 /* For all modes except AP the handle_dfs flag needs to be
9978                  * supplied to tell the kernel that userspace will handle radar
9979                  * events when they happen. Otherwise a switch to a channel
9980                  * requiring DFS will be rejected.
9981                  */
9982                 need_handle_dfs_flag = false;
9983
9984                 /* useless if AP is not running */
9985                 if (!wdev->links[link_id].ap.beacon_interval)
9986                         return -ENOTCONN;
9987                 break;
9988         case NL80211_IFTYPE_ADHOC:
9989                 if (!wdev->u.ibss.ssid_len)
9990                         return -ENOTCONN;
9991                 break;
9992         case NL80211_IFTYPE_MESH_POINT:
9993                 if (!wdev->u.mesh.id_len)
9994                         return -ENOTCONN;
9995                 break;
9996         default:
9997                 return -EOPNOTSUPP;
9998         }
9999
10000         memset(&params, 0, sizeof(params));
10001         params.beacon_csa.ftm_responder = -1;
10002
10003         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10004             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10005                 return -EINVAL;
10006
10007         /* only important for AP, IBSS and mesh create IEs internally */
10008         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10009                 return -EINVAL;
10010
10011         /* Even though the attribute is u32, the specification says
10012          * u8, so let's make sure we don't overflow.
10013          */
10014         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10015         if (cs_count > 255)
10016                 return -EINVAL;
10017
10018         params.count = cs_count;
10019
10020         if (!need_new_beacon)
10021                 goto skip_beacons;
10022
10023         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
10024         if (err)
10025                 goto free;
10026
10027         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10028                             GFP_KERNEL);
10029         if (!csa_attrs) {
10030                 err = -ENOMEM;
10031                 goto free;
10032         }
10033
10034         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10035                                           info->attrs[NL80211_ATTR_CSA_IES],
10036                                           nl80211_policy, info->extack);
10037         if (err)
10038                 goto free;
10039
10040         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
10041         if (err)
10042                 goto free;
10043
10044         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10045                 err = -EINVAL;
10046                 goto free;
10047         }
10048
10049         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10050         if (!len || (len % sizeof(u16))) {
10051                 err = -EINVAL;
10052                 goto free;
10053         }
10054
10055         params.n_counter_offsets_beacon = len / sizeof(u16);
10056         if (rdev->wiphy.max_num_csa_counters &&
10057             (params.n_counter_offsets_beacon >
10058              rdev->wiphy.max_num_csa_counters)) {
10059                 err = -EINVAL;
10060                 goto free;
10061         }
10062
10063         params.counter_offsets_beacon =
10064                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10065
10066         /* sanity checks - counters should fit and be the same */
10067         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10068                 u16 offset = params.counter_offsets_beacon[i];
10069
10070                 if (offset >= params.beacon_csa.tail_len) {
10071                         err = -EINVAL;
10072                         goto free;
10073                 }
10074
10075                 if (params.beacon_csa.tail[offset] != params.count) {
10076                         err = -EINVAL;
10077                         goto free;
10078                 }
10079         }
10080
10081         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10082                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10083                 if (!len || (len % sizeof(u16))) {
10084                         err = -EINVAL;
10085                         goto free;
10086                 }
10087
10088                 params.n_counter_offsets_presp = len / sizeof(u16);
10089                 if (rdev->wiphy.max_num_csa_counters &&
10090                     (params.n_counter_offsets_presp >
10091                      rdev->wiphy.max_num_csa_counters)) {
10092                         err = -EINVAL;
10093                         goto free;
10094                 }
10095
10096                 params.counter_offsets_presp =
10097                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10098
10099                 /* sanity checks - counters should fit and be the same */
10100                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10101                         u16 offset = params.counter_offsets_presp[i];
10102
10103                         if (offset >= params.beacon_csa.probe_resp_len) {
10104                                 err = -EINVAL;
10105                                 goto free;
10106                         }
10107
10108                         if (params.beacon_csa.probe_resp[offset] !=
10109                             params.count) {
10110                                 err = -EINVAL;
10111                                 goto free;
10112                         }
10113                 }
10114         }
10115
10116 skip_beacons:
10117         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10118         if (err)
10119                 goto free;
10120
10121         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10122                                            wdev->iftype)) {
10123                 err = -EINVAL;
10124                 goto free;
10125         }
10126
10127         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10128                                             &params.chandef,
10129                                             wdev->iftype);
10130         if (err < 0)
10131                 goto free;
10132
10133         if (err > 0) {
10134                 params.radar_required = true;
10135                 if (need_handle_dfs_flag &&
10136                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10137                         err = -EINVAL;
10138                         goto free;
10139                 }
10140         }
10141
10142         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10143                 params.block_tx = true;
10144
10145         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10146                 err = nl80211_parse_punct_bitmap(rdev, info,
10147                                                  &params.chandef,
10148                                                  &params.punct_bitmap);
10149                 if (err)
10150                         goto free;
10151         }
10152
10153         wdev_lock(wdev);
10154         err = rdev_channel_switch(rdev, dev, &params);
10155         wdev_unlock(wdev);
10156
10157 free:
10158         kfree(params.beacon_after.mbssid_ies);
10159         kfree(params.beacon_csa.mbssid_ies);
10160         kfree(csa_attrs);
10161         return err;
10162 }
10163
10164 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10165                             u32 seq, int flags,
10166                             struct cfg80211_registered_device *rdev,
10167                             struct wireless_dev *wdev,
10168                             struct cfg80211_internal_bss *intbss)
10169 {
10170         struct cfg80211_bss *res = &intbss->pub;
10171         const struct cfg80211_bss_ies *ies;
10172         unsigned int link_id;
10173         void *hdr;
10174         struct nlattr *bss;
10175
10176         ASSERT_WDEV_LOCK(wdev);
10177
10178         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10179                              NL80211_CMD_NEW_SCAN_RESULTS);
10180         if (!hdr)
10181                 return -1;
10182
10183         genl_dump_check_consistent(cb, hdr);
10184
10185         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10186                 goto nla_put_failure;
10187         if (wdev->netdev &&
10188             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10189                 goto nla_put_failure;
10190         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10191                               NL80211_ATTR_PAD))
10192                 goto nla_put_failure;
10193
10194         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10195         if (!bss)
10196                 goto nla_put_failure;
10197         if ((!is_zero_ether_addr(res->bssid) &&
10198              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10199                 goto nla_put_failure;
10200
10201         rcu_read_lock();
10202         /* indicate whether we have probe response data or not */
10203         if (rcu_access_pointer(res->proberesp_ies) &&
10204             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10205                 goto fail_unlock_rcu;
10206
10207         /* this pointer prefers to be pointed to probe response data
10208          * but is always valid
10209          */
10210         ies = rcu_dereference(res->ies);
10211         if (ies) {
10212                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10213                                       NL80211_BSS_PAD))
10214                         goto fail_unlock_rcu;
10215                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10216                                         ies->len, ies->data))
10217                         goto fail_unlock_rcu;
10218         }
10219
10220         /* and this pointer is always (unless driver didn't know) beacon data */
10221         ies = rcu_dereference(res->beacon_ies);
10222         if (ies && ies->from_beacon) {
10223                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10224                                       NL80211_BSS_PAD))
10225                         goto fail_unlock_rcu;
10226                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10227                                         ies->len, ies->data))
10228                         goto fail_unlock_rcu;
10229         }
10230         rcu_read_unlock();
10231
10232         if (res->beacon_interval &&
10233             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10234                 goto nla_put_failure;
10235         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10236             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10237             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10238                         res->channel->freq_offset) ||
10239             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10240             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10241                         jiffies_to_msecs(jiffies - intbss->ts)))
10242                 goto nla_put_failure;
10243
10244         if (intbss->parent_tsf &&
10245             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10246                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10247              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10248                      intbss->parent_bssid)))
10249                 goto nla_put_failure;
10250
10251         if (intbss->ts_boottime &&
10252             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10253                               intbss->ts_boottime, NL80211_BSS_PAD))
10254                 goto nla_put_failure;
10255
10256         if (!nl80211_put_signal(msg, intbss->pub.chains,
10257                                 intbss->pub.chain_signal,
10258                                 NL80211_BSS_CHAIN_SIGNAL))
10259                 goto nla_put_failure;
10260
10261         switch (rdev->wiphy.signal_type) {
10262         case CFG80211_SIGNAL_TYPE_MBM:
10263                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10264                         goto nla_put_failure;
10265                 break;
10266         case CFG80211_SIGNAL_TYPE_UNSPEC:
10267                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10268                         goto nla_put_failure;
10269                 break;
10270         default:
10271                 break;
10272         }
10273
10274         switch (wdev->iftype) {
10275         case NL80211_IFTYPE_P2P_CLIENT:
10276         case NL80211_IFTYPE_STATION:
10277                 for_each_valid_link(wdev, link_id) {
10278                         if (intbss == wdev->links[link_id].client.current_bss &&
10279                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10280                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10281                              (wdev->valid_links &&
10282                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10283                                           link_id) ||
10284                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10285                                        wdev->u.client.connected_addr)))))
10286                                 goto nla_put_failure;
10287                 }
10288                 break;
10289         case NL80211_IFTYPE_ADHOC:
10290                 if (intbss == wdev->u.ibss.current_bss &&
10291                     nla_put_u32(msg, NL80211_BSS_STATUS,
10292                                 NL80211_BSS_STATUS_IBSS_JOINED))
10293                         goto nla_put_failure;
10294                 break;
10295         default:
10296                 break;
10297         }
10298
10299         nla_nest_end(msg, bss);
10300
10301         genlmsg_end(msg, hdr);
10302         return 0;
10303
10304  fail_unlock_rcu:
10305         rcu_read_unlock();
10306  nla_put_failure:
10307         genlmsg_cancel(msg, hdr);
10308         return -EMSGSIZE;
10309 }
10310
10311 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10312 {
10313         struct cfg80211_registered_device *rdev;
10314         struct cfg80211_internal_bss *scan;
10315         struct wireless_dev *wdev;
10316         int start = cb->args[2], idx = 0;
10317         int err;
10318
10319         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10320         if (err)
10321                 return err;
10322         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10323         __acquire(&rdev->wiphy.mtx);
10324
10325         wdev_lock(wdev);
10326         spin_lock_bh(&rdev->bss_lock);
10327
10328         /*
10329          * dump_scan will be called multiple times to break up the scan results
10330          * into multiple messages.  It is unlikely that any more bss-es will be
10331          * expired after the first call, so only call only call this on the
10332          * first dump_scan invocation.
10333          */
10334         if (start == 0)
10335                 cfg80211_bss_expire(rdev);
10336
10337         cb->seq = rdev->bss_generation;
10338
10339         list_for_each_entry(scan, &rdev->bss_list, list) {
10340                 if (++idx <= start)
10341                         continue;
10342                 if (nl80211_send_bss(skb, cb,
10343                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10344                                 rdev, wdev, scan) < 0) {
10345                         idx--;
10346                         break;
10347                 }
10348         }
10349
10350         spin_unlock_bh(&rdev->bss_lock);
10351         wdev_unlock(wdev);
10352
10353         cb->args[2] = idx;
10354         wiphy_unlock(&rdev->wiphy);
10355
10356         return skb->len;
10357 }
10358
10359 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10360                                int flags, struct net_device *dev,
10361                                bool allow_radio_stats,
10362                                struct survey_info *survey)
10363 {
10364         void *hdr;
10365         struct nlattr *infoattr;
10366
10367         /* skip radio stats if userspace didn't request them */
10368         if (!survey->channel && !allow_radio_stats)
10369                 return 0;
10370
10371         hdr = nl80211hdr_put(msg, portid, seq, flags,
10372                              NL80211_CMD_NEW_SURVEY_RESULTS);
10373         if (!hdr)
10374                 return -ENOMEM;
10375
10376         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10377                 goto nla_put_failure;
10378
10379         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10380         if (!infoattr)
10381                 goto nla_put_failure;
10382
10383         if (survey->channel &&
10384             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10385                         survey->channel->center_freq))
10386                 goto nla_put_failure;
10387
10388         if (survey->channel && survey->channel->freq_offset &&
10389             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10390                         survey->channel->freq_offset))
10391                 goto nla_put_failure;
10392
10393         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10394             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10395                 goto nla_put_failure;
10396         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10397             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10398                 goto nla_put_failure;
10399         if ((survey->filled & SURVEY_INFO_TIME) &&
10400             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10401                         survey->time, NL80211_SURVEY_INFO_PAD))
10402                 goto nla_put_failure;
10403         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10404             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10405                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10406                 goto nla_put_failure;
10407         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10408             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10409                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10410                 goto nla_put_failure;
10411         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10412             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10413                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10414                 goto nla_put_failure;
10415         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10416             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10417                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10418                 goto nla_put_failure;
10419         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10420             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10421                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10422                 goto nla_put_failure;
10423         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10424             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10425                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10426                 goto nla_put_failure;
10427
10428         nla_nest_end(msg, infoattr);
10429
10430         genlmsg_end(msg, hdr);
10431         return 0;
10432
10433  nla_put_failure:
10434         genlmsg_cancel(msg, hdr);
10435         return -EMSGSIZE;
10436 }
10437
10438 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10439 {
10440         struct nlattr **attrbuf;
10441         struct survey_info survey;
10442         struct cfg80211_registered_device *rdev;
10443         struct wireless_dev *wdev;
10444         int survey_idx = cb->args[2];
10445         int res;
10446         bool radio_stats;
10447
10448         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10449         if (!attrbuf)
10450                 return -ENOMEM;
10451
10452         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10453         if (res) {
10454                 kfree(attrbuf);
10455                 return res;
10456         }
10457         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10458         __acquire(&rdev->wiphy.mtx);
10459
10460         /* prepare_wdev_dump parsed the attributes */
10461         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10462
10463         if (!wdev->netdev) {
10464                 res = -EINVAL;
10465                 goto out_err;
10466         }
10467
10468         if (!rdev->ops->dump_survey) {
10469                 res = -EOPNOTSUPP;
10470                 goto out_err;
10471         }
10472
10473         while (1) {
10474                 wdev_lock(wdev);
10475                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10476                 wdev_unlock(wdev);
10477                 if (res == -ENOENT)
10478                         break;
10479                 if (res)
10480                         goto out_err;
10481
10482                 /* don't send disabled channels, but do send non-channel data */
10483                 if (survey.channel &&
10484                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10485                         survey_idx++;
10486                         continue;
10487                 }
10488
10489                 if (nl80211_send_survey(skb,
10490                                 NETLINK_CB(cb->skb).portid,
10491                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10492                                 wdev->netdev, radio_stats, &survey) < 0)
10493                         goto out;
10494                 survey_idx++;
10495         }
10496
10497  out:
10498         cb->args[2] = survey_idx;
10499         res = skb->len;
10500  out_err:
10501         kfree(attrbuf);
10502         wiphy_unlock(&rdev->wiphy);
10503         return res;
10504 }
10505
10506 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10507 {
10508         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10509                                   NL80211_WPA_VERSION_2 |
10510                                   NL80211_WPA_VERSION_3));
10511 }
10512
10513 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10514 {
10515         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10516         struct net_device *dev = info->user_ptr[1];
10517         struct ieee80211_channel *chan;
10518         const u8 *bssid, *ssid;
10519         int err, ssid_len;
10520         enum nl80211_auth_type auth_type;
10521         struct key_parse key;
10522         bool local_state_change;
10523         struct cfg80211_auth_request req = {};
10524         u32 freq;
10525
10526         if (!info->attrs[NL80211_ATTR_MAC])
10527                 return -EINVAL;
10528
10529         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10530                 return -EINVAL;
10531
10532         if (!info->attrs[NL80211_ATTR_SSID])
10533                 return -EINVAL;
10534
10535         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10536                 return -EINVAL;
10537
10538         err = nl80211_parse_key(info, &key);
10539         if (err)
10540                 return err;
10541
10542         if (key.idx >= 0) {
10543                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10544                         return -EINVAL;
10545                 if (!key.p.key || !key.p.key_len)
10546                         return -EINVAL;
10547                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10548                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10549                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10550                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10551                         return -EINVAL;
10552                 if (key.idx > 3)
10553                         return -EINVAL;
10554         } else {
10555                 key.p.key_len = 0;
10556                 key.p.key = NULL;
10557         }
10558
10559         if (key.idx >= 0) {
10560                 int i;
10561                 bool ok = false;
10562
10563                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10564                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10565                                 ok = true;
10566                                 break;
10567                         }
10568                 }
10569                 if (!ok)
10570                         return -EINVAL;
10571         }
10572
10573         if (!rdev->ops->auth)
10574                 return -EOPNOTSUPP;
10575
10576         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10577             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10578                 return -EOPNOTSUPP;
10579
10580         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10581         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10582         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10583                 freq +=
10584                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10585
10586         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10587         if (!chan)
10588                 return -EINVAL;
10589
10590         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10591         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10592
10593         if (info->attrs[NL80211_ATTR_IE]) {
10594                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10595                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10596         }
10597
10598         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10599         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10600                 return -EINVAL;
10601
10602         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10603              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10604              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10605              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10606             !info->attrs[NL80211_ATTR_AUTH_DATA])
10607                 return -EINVAL;
10608
10609         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10610                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10611                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10612                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10613                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10614                         return -EINVAL;
10615                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10616                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10617         }
10618
10619         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10620
10621         /*
10622          * Since we no longer track auth state, ignore
10623          * requests to only change local state.
10624          */
10625         if (local_state_change)
10626                 return 0;
10627
10628         req.auth_type = auth_type;
10629         req.key = key.p.key;
10630         req.key_len = key.p.key_len;
10631         req.key_idx = key.idx;
10632         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10633         if (req.link_id >= 0) {
10634                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10635                         return -EINVAL;
10636                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10637                         return -EINVAL;
10638                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10639         }
10640
10641         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10642                                    IEEE80211_BSS_TYPE_ESS,
10643                                    IEEE80211_PRIVACY_ANY);
10644         if (!req.bss)
10645                 return -ENOENT;
10646
10647         wdev_lock(dev->ieee80211_ptr);
10648         err = cfg80211_mlme_auth(rdev, dev, &req);
10649         wdev_unlock(dev->ieee80211_ptr);
10650
10651         cfg80211_put_bss(&rdev->wiphy, req.bss);
10652
10653         return err;
10654 }
10655
10656 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10657                                      struct genl_info *info)
10658 {
10659         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10660                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10661                 return -EINVAL;
10662         }
10663
10664         if (!rdev->ops->tx_control_port ||
10665             !wiphy_ext_feature_isset(&rdev->wiphy,
10666                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10667                 return -EOPNOTSUPP;
10668
10669         return 0;
10670 }
10671
10672 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10673                                    struct genl_info *info,
10674                                    struct cfg80211_crypto_settings *settings,
10675                                    int cipher_limit)
10676 {
10677         memset(settings, 0, sizeof(*settings));
10678
10679         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10680
10681         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10682                 u16 proto;
10683
10684                 proto = nla_get_u16(
10685                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10686                 settings->control_port_ethertype = cpu_to_be16(proto);
10687                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10688                     proto != ETH_P_PAE)
10689                         return -EINVAL;
10690                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10691                         settings->control_port_no_encrypt = true;
10692         } else
10693                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10694
10695         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10696                 int r = validate_pae_over_nl80211(rdev, info);
10697
10698                 if (r < 0)
10699                         return r;
10700
10701                 settings->control_port_over_nl80211 = true;
10702
10703                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10704                         settings->control_port_no_preauth = true;
10705         }
10706
10707         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10708                 void *data;
10709                 int len, i;
10710
10711                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10712                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10713                 settings->n_ciphers_pairwise = len / sizeof(u32);
10714
10715                 if (len % sizeof(u32))
10716                         return -EINVAL;
10717
10718                 if (settings->n_ciphers_pairwise > cipher_limit)
10719                         return -EINVAL;
10720
10721                 memcpy(settings->ciphers_pairwise, data, len);
10722
10723                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10724                         if (!cfg80211_supported_cipher_suite(
10725                                         &rdev->wiphy,
10726                                         settings->ciphers_pairwise[i]))
10727                                 return -EINVAL;
10728         }
10729
10730         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10731                 settings->cipher_group =
10732                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10733                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10734                                                      settings->cipher_group))
10735                         return -EINVAL;
10736         }
10737
10738         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10739                 settings->wpa_versions =
10740                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10741                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10742                         return -EINVAL;
10743         }
10744
10745         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10746                 void *data;
10747                 int len;
10748
10749                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10750                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10751                 settings->n_akm_suites = len / sizeof(u32);
10752
10753                 if (len % sizeof(u32))
10754                         return -EINVAL;
10755
10756                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10757                         return -EINVAL;
10758
10759                 memcpy(settings->akm_suites, data, len);
10760         }
10761
10762         if (info->attrs[NL80211_ATTR_PMK]) {
10763                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10764                         return -EINVAL;
10765                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10766                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10767                     !wiphy_ext_feature_isset(&rdev->wiphy,
10768                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10769                         return -EINVAL;
10770                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10771         }
10772
10773         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10774                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10775                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10776                     !wiphy_ext_feature_isset(&rdev->wiphy,
10777                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10778                         return -EINVAL;
10779                 settings->sae_pwd =
10780                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10781                 settings->sae_pwd_len =
10782                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10783         }
10784
10785         if (info->attrs[NL80211_ATTR_SAE_PWE])
10786                 settings->sae_pwe =
10787                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10788         else
10789                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10790
10791         return 0;
10792 }
10793
10794 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10795                                               const u8 *ssid, int ssid_len,
10796                                               struct nlattr **attrs,
10797                                               const u8 **bssid_out)
10798 {
10799         struct ieee80211_channel *chan;
10800         struct cfg80211_bss *bss;
10801         const u8 *bssid;
10802         u32 freq;
10803
10804         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10805                 return ERR_PTR(-EINVAL);
10806
10807         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10808
10809         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10810         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10811                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10812
10813         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10814         if (!chan)
10815                 return ERR_PTR(-EINVAL);
10816
10817         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10818                                ssid, ssid_len,
10819                                IEEE80211_BSS_TYPE_ESS,
10820                                IEEE80211_PRIVACY_ANY);
10821         if (!bss)
10822                 return ERR_PTR(-ENOENT);
10823
10824         *bssid_out = bssid;
10825         return bss;
10826 }
10827
10828 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10829 {
10830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10831         struct net_device *dev = info->user_ptr[1];
10832         struct cfg80211_assoc_request req = {};
10833         struct nlattr **attrs = NULL;
10834         const u8 *bssid, *ssid;
10835         unsigned int link_id;
10836         int err, ssid_len;
10837
10838         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10839             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10840                 return -EPERM;
10841
10842         if (!info->attrs[NL80211_ATTR_SSID])
10843                 return -EINVAL;
10844
10845         if (!rdev->ops->assoc)
10846                 return -EOPNOTSUPP;
10847
10848         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10849             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10850                 return -EOPNOTSUPP;
10851
10852         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10853         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10854
10855         if (info->attrs[NL80211_ATTR_IE]) {
10856                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10857                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10858
10859                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10860                                            req.ie, req.ie_len)) {
10861                         GENL_SET_ERR_MSG(info,
10862                                          "non-inheritance makes no sense");
10863                         return -EINVAL;
10864                 }
10865         }
10866
10867         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10868                 enum nl80211_mfp mfp =
10869                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10870                 if (mfp == NL80211_MFP_REQUIRED)
10871                         req.use_mfp = true;
10872                 else if (mfp != NL80211_MFP_NO)
10873                         return -EINVAL;
10874         }
10875
10876         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10877                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10878
10879         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10880                 req.flags |= ASSOC_REQ_DISABLE_HT;
10881
10882         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10883                 memcpy(&req.ht_capa_mask,
10884                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10885                        sizeof(req.ht_capa_mask));
10886
10887         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10888                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10889                         return -EINVAL;
10890                 memcpy(&req.ht_capa,
10891                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10892                        sizeof(req.ht_capa));
10893         }
10894
10895         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10896                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10897
10898         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10899                 req.flags |= ASSOC_REQ_DISABLE_HE;
10900
10901         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10902                 req.flags |= ASSOC_REQ_DISABLE_EHT;
10903
10904         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10905                 memcpy(&req.vht_capa_mask,
10906                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10907                        sizeof(req.vht_capa_mask));
10908
10909         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10910                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10911                         return -EINVAL;
10912                 memcpy(&req.vht_capa,
10913                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10914                        sizeof(req.vht_capa));
10915         }
10916
10917         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10918                 if (!((rdev->wiphy.features &
10919                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10920                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10921                     !wiphy_ext_feature_isset(&rdev->wiphy,
10922                                              NL80211_EXT_FEATURE_RRM))
10923                         return -EINVAL;
10924                 req.flags |= ASSOC_REQ_USE_RRM;
10925         }
10926
10927         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10928                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10929                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10930                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10931                         return -EINVAL;
10932                 req.fils_nonces =
10933                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10934         }
10935
10936         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10937                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10938                         return -EINVAL;
10939                 memcpy(&req.s1g_capa_mask,
10940                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10941                        sizeof(req.s1g_capa_mask));
10942         }
10943
10944         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10945                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10946                         return -EINVAL;
10947                 memcpy(&req.s1g_capa,
10948                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10949                        sizeof(req.s1g_capa));
10950         }
10951
10952         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10953
10954         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
10955                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
10956                 struct nlattr *link;
10957                 int rem = 0;
10958
10959                 if (req.link_id < 0)
10960                         return -EINVAL;
10961
10962                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10963                         return -EINVAL;
10964
10965                 if (info->attrs[NL80211_ATTR_MAC] ||
10966                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10967                     !info->attrs[NL80211_ATTR_MLD_ADDR])
10968                         return -EINVAL;
10969
10970                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10971
10972                 attrs = kzalloc(attrsize, GFP_KERNEL);
10973                 if (!attrs)
10974                         return -ENOMEM;
10975
10976                 nla_for_each_nested(link,
10977                                     info->attrs[NL80211_ATTR_MLO_LINKS],
10978                                     rem) {
10979                         memset(attrs, 0, attrsize);
10980
10981                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
10982                                          link, NULL, NULL);
10983
10984                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
10985                                 err = -EINVAL;
10986                                 goto free;
10987                         }
10988
10989                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
10990                         /* cannot use the same link ID again */
10991                         if (req.links[link_id].bss) {
10992                                 err = -EINVAL;
10993                                 goto free;
10994                         }
10995                         req.links[link_id].bss =
10996                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
10997                                                   &bssid);
10998                         if (IS_ERR(req.links[link_id].bss)) {
10999                                 err = PTR_ERR(req.links[link_id].bss);
11000                                 req.links[link_id].bss = NULL;
11001                                 goto free;
11002                         }
11003
11004                         if (attrs[NL80211_ATTR_IE]) {
11005                                 req.links[link_id].elems =
11006                                         nla_data(attrs[NL80211_ATTR_IE]);
11007                                 req.links[link_id].elems_len =
11008                                         nla_len(attrs[NL80211_ATTR_IE]);
11009
11010                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11011                                                        req.links[link_id].elems,
11012                                                        req.links[link_id].elems_len)) {
11013                                         GENL_SET_ERR_MSG(info,
11014                                                          "cannot deal with fragmentation");
11015                                         err = -EINVAL;
11016                                         goto free;
11017                                 }
11018
11019                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11020                                                            req.links[link_id].elems,
11021                                                            req.links[link_id].elems_len)) {
11022                                         GENL_SET_ERR_MSG(info,
11023                                                          "cannot deal with non-inheritance");
11024                                         err = -EINVAL;
11025                                         goto free;
11026                                 }
11027                         }
11028                 }
11029
11030                 if (!req.links[req.link_id].bss) {
11031                         err = -EINVAL;
11032                         goto free;
11033                 }
11034
11035                 if (req.links[req.link_id].elems_len) {
11036                         GENL_SET_ERR_MSG(info,
11037                                          "cannot have per-link elems on assoc link");
11038                         err = -EINVAL;
11039                         goto free;
11040                 }
11041
11042                 kfree(attrs);
11043                 attrs = NULL;
11044         } else {
11045                 if (req.link_id >= 0)
11046                         return -EINVAL;
11047
11048                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
11049                                             &bssid);
11050                 if (IS_ERR(req.bss))
11051                         return PTR_ERR(req.bss);
11052         }
11053
11054         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11055         if (!err) {
11056                 wdev_lock(dev->ieee80211_ptr);
11057
11058                 err = cfg80211_mlme_assoc(rdev, dev, &req);
11059
11060                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11061                         dev->ieee80211_ptr->conn_owner_nlportid =
11062                                 info->snd_portid;
11063                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11064                                bssid, ETH_ALEN);
11065                 }
11066
11067                 wdev_unlock(dev->ieee80211_ptr);
11068         }
11069
11070 free:
11071         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11072                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11073         cfg80211_put_bss(&rdev->wiphy, req.bss);
11074         kfree(attrs);
11075
11076         return err;
11077 }
11078
11079 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11080 {
11081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11082         struct net_device *dev = info->user_ptr[1];
11083         const u8 *ie = NULL, *bssid;
11084         int ie_len = 0, err;
11085         u16 reason_code;
11086         bool local_state_change;
11087
11088         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11089             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11090                 return -EPERM;
11091
11092         if (!info->attrs[NL80211_ATTR_MAC])
11093                 return -EINVAL;
11094
11095         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11096                 return -EINVAL;
11097
11098         if (!rdev->ops->deauth)
11099                 return -EOPNOTSUPP;
11100
11101         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11102             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11103                 return -EOPNOTSUPP;
11104
11105         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11106
11107         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11108         if (reason_code == 0) {
11109                 /* Reason Code 0 is reserved */
11110                 return -EINVAL;
11111         }
11112
11113         if (info->attrs[NL80211_ATTR_IE]) {
11114                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11115                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11116         }
11117
11118         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11119
11120         wdev_lock(dev->ieee80211_ptr);
11121         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11122                                    local_state_change);
11123         wdev_unlock(dev->ieee80211_ptr);
11124         return err;
11125 }
11126
11127 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11128 {
11129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11130         struct net_device *dev = info->user_ptr[1];
11131         const u8 *ie = NULL, *bssid;
11132         int ie_len = 0, err;
11133         u16 reason_code;
11134         bool local_state_change;
11135
11136         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11137             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11138                 return -EPERM;
11139
11140         if (!info->attrs[NL80211_ATTR_MAC])
11141                 return -EINVAL;
11142
11143         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11144                 return -EINVAL;
11145
11146         if (!rdev->ops->disassoc)
11147                 return -EOPNOTSUPP;
11148
11149         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11150             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11151                 return -EOPNOTSUPP;
11152
11153         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11154
11155         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11156         if (reason_code == 0) {
11157                 /* Reason Code 0 is reserved */
11158                 return -EINVAL;
11159         }
11160
11161         if (info->attrs[NL80211_ATTR_IE]) {
11162                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11163                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11164         }
11165
11166         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11167
11168         wdev_lock(dev->ieee80211_ptr);
11169         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11170                                      local_state_change);
11171         wdev_unlock(dev->ieee80211_ptr);
11172         return err;
11173 }
11174
11175 static bool
11176 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11177                          int mcast_rate[NUM_NL80211_BANDS],
11178                          int rateval)
11179 {
11180         struct wiphy *wiphy = &rdev->wiphy;
11181         bool found = false;
11182         int band, i;
11183
11184         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11185                 struct ieee80211_supported_band *sband;
11186
11187                 sband = wiphy->bands[band];
11188                 if (!sband)
11189                         continue;
11190
11191                 for (i = 0; i < sband->n_bitrates; i++) {
11192                         if (sband->bitrates[i].bitrate == rateval) {
11193                                 mcast_rate[band] = i + 1;
11194                                 found = true;
11195                                 break;
11196                         }
11197                 }
11198         }
11199
11200         return found;
11201 }
11202
11203 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11204 {
11205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11206         struct net_device *dev = info->user_ptr[1];
11207         struct cfg80211_ibss_params ibss;
11208         struct wiphy *wiphy;
11209         struct cfg80211_cached_keys *connkeys = NULL;
11210         int err;
11211
11212         memset(&ibss, 0, sizeof(ibss));
11213
11214         if (!info->attrs[NL80211_ATTR_SSID] ||
11215             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11216                 return -EINVAL;
11217
11218         ibss.beacon_interval = 100;
11219
11220         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11221                 ibss.beacon_interval =
11222                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11223
11224         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11225                                            ibss.beacon_interval);
11226         if (err)
11227                 return err;
11228
11229         if (!rdev->ops->join_ibss)
11230                 return -EOPNOTSUPP;
11231
11232         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11233                 return -EOPNOTSUPP;
11234
11235         wiphy = &rdev->wiphy;
11236
11237         if (info->attrs[NL80211_ATTR_MAC]) {
11238                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11239
11240                 if (!is_valid_ether_addr(ibss.bssid))
11241                         return -EINVAL;
11242         }
11243         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11244         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11245
11246         if (info->attrs[NL80211_ATTR_IE]) {
11247                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11248                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11249         }
11250
11251         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11252         if (err)
11253                 return err;
11254
11255         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11256                                      NL80211_IFTYPE_ADHOC))
11257                 return -EINVAL;
11258
11259         switch (ibss.chandef.width) {
11260         case NL80211_CHAN_WIDTH_5:
11261         case NL80211_CHAN_WIDTH_10:
11262         case NL80211_CHAN_WIDTH_20_NOHT:
11263                 break;
11264         case NL80211_CHAN_WIDTH_20:
11265         case NL80211_CHAN_WIDTH_40:
11266                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11267                         return -EINVAL;
11268                 break;
11269         case NL80211_CHAN_WIDTH_80:
11270         case NL80211_CHAN_WIDTH_80P80:
11271         case NL80211_CHAN_WIDTH_160:
11272                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11273                         return -EINVAL;
11274                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11275                                              NL80211_EXT_FEATURE_VHT_IBSS))
11276                         return -EINVAL;
11277                 break;
11278         case NL80211_CHAN_WIDTH_320:
11279                 return -EINVAL;
11280         default:
11281                 return -EINVAL;
11282         }
11283
11284         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11285         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11286
11287         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11288                 u8 *rates =
11289                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11290                 int n_rates =
11291                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11292                 struct ieee80211_supported_band *sband =
11293                         wiphy->bands[ibss.chandef.chan->band];
11294
11295                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11296                                              &ibss.basic_rates);
11297                 if (err)
11298                         return err;
11299         }
11300
11301         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11302                 memcpy(&ibss.ht_capa_mask,
11303                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11304                        sizeof(ibss.ht_capa_mask));
11305
11306         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11307                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11308                         return -EINVAL;
11309                 memcpy(&ibss.ht_capa,
11310                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11311                        sizeof(ibss.ht_capa));
11312         }
11313
11314         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11315             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11316                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11317                 return -EINVAL;
11318
11319         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11320                 bool no_ht = false;
11321
11322                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11323                 if (IS_ERR(connkeys))
11324                         return PTR_ERR(connkeys);
11325
11326                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11327                     no_ht) {
11328                         kfree_sensitive(connkeys);
11329                         return -EINVAL;
11330                 }
11331         }
11332
11333         ibss.control_port =
11334                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11335
11336         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11337                 int r = validate_pae_over_nl80211(rdev, info);
11338
11339                 if (r < 0) {
11340                         kfree_sensitive(connkeys);
11341                         return r;
11342                 }
11343
11344                 ibss.control_port_over_nl80211 = true;
11345         }
11346
11347         ibss.userspace_handles_dfs =
11348                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11349
11350         wdev_lock(dev->ieee80211_ptr);
11351         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11352         if (err)
11353                 kfree_sensitive(connkeys);
11354         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11355                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11356         wdev_unlock(dev->ieee80211_ptr);
11357
11358         return err;
11359 }
11360
11361 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11362 {
11363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11364         struct net_device *dev = info->user_ptr[1];
11365
11366         if (!rdev->ops->leave_ibss)
11367                 return -EOPNOTSUPP;
11368
11369         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11370                 return -EOPNOTSUPP;
11371
11372         return cfg80211_leave_ibss(rdev, dev, false);
11373 }
11374
11375 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11376 {
11377         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11378         struct net_device *dev = info->user_ptr[1];
11379         int mcast_rate[NUM_NL80211_BANDS];
11380         u32 nla_rate;
11381
11382         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11383             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11384             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11385                 return -EOPNOTSUPP;
11386
11387         if (!rdev->ops->set_mcast_rate)
11388                 return -EOPNOTSUPP;
11389
11390         memset(mcast_rate, 0, sizeof(mcast_rate));
11391
11392         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11393                 return -EINVAL;
11394
11395         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11396         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11397                 return -EINVAL;
11398
11399         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11400 }
11401
11402 static struct sk_buff *
11403 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11404                             struct wireless_dev *wdev, int approxlen,
11405                             u32 portid, u32 seq, enum nl80211_commands cmd,
11406                             enum nl80211_attrs attr,
11407                             const struct nl80211_vendor_cmd_info *info,
11408                             gfp_t gfp)
11409 {
11410         struct sk_buff *skb;
11411         void *hdr;
11412         struct nlattr *data;
11413
11414         skb = nlmsg_new(approxlen + 100, gfp);
11415         if (!skb)
11416                 return NULL;
11417
11418         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11419         if (!hdr) {
11420                 kfree_skb(skb);
11421                 return NULL;
11422         }
11423
11424         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11425                 goto nla_put_failure;
11426
11427         if (info) {
11428                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11429                                 info->vendor_id))
11430                         goto nla_put_failure;
11431                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11432                                 info->subcmd))
11433                         goto nla_put_failure;
11434         }
11435
11436         if (wdev) {
11437                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11438                                       wdev_id(wdev), NL80211_ATTR_PAD))
11439                         goto nla_put_failure;
11440                 if (wdev->netdev &&
11441                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11442                                 wdev->netdev->ifindex))
11443                         goto nla_put_failure;
11444         }
11445
11446         data = nla_nest_start_noflag(skb, attr);
11447         if (!data)
11448                 goto nla_put_failure;
11449
11450         ((void **)skb->cb)[0] = rdev;
11451         ((void **)skb->cb)[1] = hdr;
11452         ((void **)skb->cb)[2] = data;
11453
11454         return skb;
11455
11456  nla_put_failure:
11457         kfree_skb(skb);
11458         return NULL;
11459 }
11460
11461 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11462                                            struct wireless_dev *wdev,
11463                                            enum nl80211_commands cmd,
11464                                            enum nl80211_attrs attr,
11465                                            unsigned int portid,
11466                                            int vendor_event_idx,
11467                                            int approxlen, gfp_t gfp)
11468 {
11469         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11470         const struct nl80211_vendor_cmd_info *info;
11471
11472         switch (cmd) {
11473         case NL80211_CMD_TESTMODE:
11474                 if (WARN_ON(vendor_event_idx != -1))
11475                         return NULL;
11476                 info = NULL;
11477                 break;
11478         case NL80211_CMD_VENDOR:
11479                 if (WARN_ON(vendor_event_idx < 0 ||
11480                             vendor_event_idx >= wiphy->n_vendor_events))
11481                         return NULL;
11482                 info = &wiphy->vendor_events[vendor_event_idx];
11483                 break;
11484         default:
11485                 WARN_ON(1);
11486                 return NULL;
11487         }
11488
11489         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11490                                            cmd, attr, info, gfp);
11491 }
11492 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11493
11494 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11495 {
11496         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11497         void *hdr = ((void **)skb->cb)[1];
11498         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11499         struct nlattr *data = ((void **)skb->cb)[2];
11500         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11501
11502         /* clear CB data for netlink core to own from now on */
11503         memset(skb->cb, 0, sizeof(skb->cb));
11504
11505         nla_nest_end(skb, data);
11506         genlmsg_end(skb, hdr);
11507
11508         if (nlhdr->nlmsg_pid) {
11509                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11510                                 nlhdr->nlmsg_pid);
11511         } else {
11512                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11513                         mcgrp = NL80211_MCGRP_VENDOR;
11514
11515                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11516                                         skb, 0, mcgrp, gfp);
11517         }
11518 }
11519 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11520
11521 #ifdef CONFIG_NL80211_TESTMODE
11522 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11523 {
11524         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11525         struct wireless_dev *wdev;
11526         int err;
11527
11528         lockdep_assert_held(&rdev->wiphy.mtx);
11529
11530         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11531                                           info->attrs);
11532
11533         if (!rdev->ops->testmode_cmd)
11534                 return -EOPNOTSUPP;
11535
11536         if (IS_ERR(wdev)) {
11537                 err = PTR_ERR(wdev);
11538                 if (err != -EINVAL)
11539                         return err;
11540                 wdev = NULL;
11541         } else if (wdev->wiphy != &rdev->wiphy) {
11542                 return -EINVAL;
11543         }
11544
11545         if (!info->attrs[NL80211_ATTR_TESTDATA])
11546                 return -EINVAL;
11547
11548         rdev->cur_cmd_info = info;
11549         err = rdev_testmode_cmd(rdev, wdev,
11550                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11551                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11552         rdev->cur_cmd_info = NULL;
11553
11554         return err;
11555 }
11556
11557 static int nl80211_testmode_dump(struct sk_buff *skb,
11558                                  struct netlink_callback *cb)
11559 {
11560         struct cfg80211_registered_device *rdev;
11561         struct nlattr **attrbuf = NULL;
11562         int err;
11563         long phy_idx;
11564         void *data = NULL;
11565         int data_len = 0;
11566
11567         rtnl_lock();
11568
11569         if (cb->args[0]) {
11570                 /*
11571                  * 0 is a valid index, but not valid for args[0],
11572                  * so we need to offset by 1.
11573                  */
11574                 phy_idx = cb->args[0] - 1;
11575
11576                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11577                 if (!rdev) {
11578                         err = -ENOENT;
11579                         goto out_err;
11580                 }
11581         } else {
11582                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11583                                   GFP_KERNEL);
11584                 if (!attrbuf) {
11585                         err = -ENOMEM;
11586                         goto out_err;
11587                 }
11588
11589                 err = nlmsg_parse_deprecated(cb->nlh,
11590                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11591                                              attrbuf, nl80211_fam.maxattr,
11592                                              nl80211_policy, NULL);
11593                 if (err)
11594                         goto out_err;
11595
11596                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11597                 if (IS_ERR(rdev)) {
11598                         err = PTR_ERR(rdev);
11599                         goto out_err;
11600                 }
11601                 phy_idx = rdev->wiphy_idx;
11602
11603                 if (attrbuf[NL80211_ATTR_TESTDATA])
11604                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11605         }
11606
11607         if (cb->args[1]) {
11608                 data = nla_data((void *)cb->args[1]);
11609                 data_len = nla_len((void *)cb->args[1]);
11610         }
11611
11612         if (!rdev->ops->testmode_dump) {
11613                 err = -EOPNOTSUPP;
11614                 goto out_err;
11615         }
11616
11617         while (1) {
11618                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11619                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11620                                            NL80211_CMD_TESTMODE);
11621                 struct nlattr *tmdata;
11622
11623                 if (!hdr)
11624                         break;
11625
11626                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11627                         genlmsg_cancel(skb, hdr);
11628                         break;
11629                 }
11630
11631                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11632                 if (!tmdata) {
11633                         genlmsg_cancel(skb, hdr);
11634                         break;
11635                 }
11636                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11637                 nla_nest_end(skb, tmdata);
11638
11639                 if (err == -ENOBUFS || err == -ENOENT) {
11640                         genlmsg_cancel(skb, hdr);
11641                         break;
11642                 } else if (err) {
11643                         genlmsg_cancel(skb, hdr);
11644                         goto out_err;
11645                 }
11646
11647                 genlmsg_end(skb, hdr);
11648         }
11649
11650         err = skb->len;
11651         /* see above */
11652         cb->args[0] = phy_idx + 1;
11653  out_err:
11654         kfree(attrbuf);
11655         rtnl_unlock();
11656         return err;
11657 }
11658 #endif
11659
11660 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11661 {
11662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11663         struct net_device *dev = info->user_ptr[1];
11664         struct cfg80211_connect_params connect;
11665         struct wiphy *wiphy;
11666         struct cfg80211_cached_keys *connkeys = NULL;
11667         u32 freq = 0;
11668         int err;
11669
11670         memset(&connect, 0, sizeof(connect));
11671
11672         if (!info->attrs[NL80211_ATTR_SSID] ||
11673             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11674                 return -EINVAL;
11675
11676         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11677                 connect.auth_type =
11678                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11679                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11680                                              NL80211_CMD_CONNECT))
11681                         return -EINVAL;
11682         } else
11683                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11684
11685         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11686
11687         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11688             !wiphy_ext_feature_isset(&rdev->wiphy,
11689                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11690                 return -EINVAL;
11691         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11692
11693         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11694                                       NL80211_MAX_NR_CIPHER_SUITES);
11695         if (err)
11696                 return err;
11697
11698         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11699             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11700                 return -EOPNOTSUPP;
11701
11702         wiphy = &rdev->wiphy;
11703
11704         connect.bg_scan_period = -1;
11705         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11706                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11707                 connect.bg_scan_period =
11708                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11709         }
11710
11711         if (info->attrs[NL80211_ATTR_MAC])
11712                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11713         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11714                 connect.bssid_hint =
11715                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11716         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11717         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11718
11719         if (info->attrs[NL80211_ATTR_IE]) {
11720                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11721                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11722         }
11723
11724         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11725                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11726                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11727                     !wiphy_ext_feature_isset(&rdev->wiphy,
11728                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11729                         return -EOPNOTSUPP;
11730         } else {
11731                 connect.mfp = NL80211_MFP_NO;
11732         }
11733
11734         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11735                 connect.prev_bssid =
11736                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11737
11738         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11739                 freq = MHZ_TO_KHZ(nla_get_u32(
11740                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11741         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11742                 freq +=
11743                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11744
11745         if (freq) {
11746                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11747                 if (!connect.channel)
11748                         return -EINVAL;
11749         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11750                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11751                 freq = MHZ_TO_KHZ(freq);
11752                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11753                 if (!connect.channel_hint)
11754                         return -EINVAL;
11755         }
11756
11757         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11758                 connect.edmg.channels =
11759                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11760
11761                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11762                         connect.edmg.bw_config =
11763                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11764         }
11765
11766         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11767                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11768                 if (IS_ERR(connkeys))
11769                         return PTR_ERR(connkeys);
11770         }
11771
11772         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11773                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11774
11775         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11776                 memcpy(&connect.ht_capa_mask,
11777                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11778                        sizeof(connect.ht_capa_mask));
11779
11780         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11781                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11782                         kfree_sensitive(connkeys);
11783                         return -EINVAL;
11784                 }
11785                 memcpy(&connect.ht_capa,
11786                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11787                        sizeof(connect.ht_capa));
11788         }
11789
11790         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11791                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11792
11793         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11794                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11795
11796         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11797                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11798
11799         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11800                 memcpy(&connect.vht_capa_mask,
11801                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11802                        sizeof(connect.vht_capa_mask));
11803
11804         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11805                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11806                         kfree_sensitive(connkeys);
11807                         return -EINVAL;
11808                 }
11809                 memcpy(&connect.vht_capa,
11810                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11811                        sizeof(connect.vht_capa));
11812         }
11813
11814         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11815                 if (!((rdev->wiphy.features &
11816                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11817                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11818                     !wiphy_ext_feature_isset(&rdev->wiphy,
11819                                              NL80211_EXT_FEATURE_RRM)) {
11820                         kfree_sensitive(connkeys);
11821                         return -EINVAL;
11822                 }
11823                 connect.flags |= ASSOC_REQ_USE_RRM;
11824         }
11825
11826         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11827         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11828                 kfree_sensitive(connkeys);
11829                 return -EOPNOTSUPP;
11830         }
11831
11832         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11833                 /* bss selection makes no sense if bssid is set */
11834                 if (connect.bssid) {
11835                         kfree_sensitive(connkeys);
11836                         return -EINVAL;
11837                 }
11838
11839                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11840                                        wiphy, &connect.bss_select);
11841                 if (err) {
11842                         kfree_sensitive(connkeys);
11843                         return err;
11844                 }
11845         }
11846
11847         if (wiphy_ext_feature_isset(&rdev->wiphy,
11848                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11849             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11850             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11851             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11852             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11853                 connect.fils_erp_username =
11854                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11855                 connect.fils_erp_username_len =
11856                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11857                 connect.fils_erp_realm =
11858                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11859                 connect.fils_erp_realm_len =
11860                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11861                 connect.fils_erp_next_seq_num =
11862                         nla_get_u16(
11863                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11864                 connect.fils_erp_rrk =
11865                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11866                 connect.fils_erp_rrk_len =
11867                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11868         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11869                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11870                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11871                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11872                 kfree_sensitive(connkeys);
11873                 return -EINVAL;
11874         }
11875
11876         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
11877                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11878                         kfree_sensitive(connkeys);
11879                         GENL_SET_ERR_MSG(info,
11880                                          "external auth requires connection ownership");
11881                         return -EINVAL;
11882                 }
11883                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
11884         }
11885
11886         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
11887                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
11888
11889         wdev_lock(dev->ieee80211_ptr);
11890
11891         err = cfg80211_connect(rdev, dev, &connect, connkeys,
11892                                connect.prev_bssid);
11893         if (err)
11894                 kfree_sensitive(connkeys);
11895
11896         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11897                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11898                 if (connect.bssid)
11899                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11900                                connect.bssid, ETH_ALEN);
11901                 else
11902                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
11903         }
11904
11905         wdev_unlock(dev->ieee80211_ptr);
11906
11907         return err;
11908 }
11909
11910 static int nl80211_update_connect_params(struct sk_buff *skb,
11911                                          struct genl_info *info)
11912 {
11913         struct cfg80211_connect_params connect = {};
11914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11915         struct net_device *dev = info->user_ptr[1];
11916         struct wireless_dev *wdev = dev->ieee80211_ptr;
11917         bool fils_sk_offload;
11918         u32 auth_type;
11919         u32 changed = 0;
11920         int ret;
11921
11922         if (!rdev->ops->update_connect_params)
11923                 return -EOPNOTSUPP;
11924
11925         if (info->attrs[NL80211_ATTR_IE]) {
11926                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11927                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11928                 changed |= UPDATE_ASSOC_IES;
11929         }
11930
11931         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
11932                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
11933
11934         /*
11935          * when driver supports fils-sk offload all attributes must be
11936          * provided. So the else covers "fils-sk-not-all" and
11937          * "no-fils-sk-any".
11938          */
11939         if (fils_sk_offload &&
11940             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11941             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11942             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11943             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11944                 connect.fils_erp_username =
11945                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11946                 connect.fils_erp_username_len =
11947                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11948                 connect.fils_erp_realm =
11949                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11950                 connect.fils_erp_realm_len =
11951                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11952                 connect.fils_erp_next_seq_num =
11953                         nla_get_u16(
11954                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11955                 connect.fils_erp_rrk =
11956                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11957                 connect.fils_erp_rrk_len =
11958                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11959                 changed |= UPDATE_FILS_ERP_INFO;
11960         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11961                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11962                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11963                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11964                 return -EINVAL;
11965         }
11966
11967         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11968                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11969                 if (!nl80211_valid_auth_type(rdev, auth_type,
11970                                              NL80211_CMD_CONNECT))
11971                         return -EINVAL;
11972
11973                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11974                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11975                         return -EINVAL;
11976
11977                 connect.auth_type = auth_type;
11978                 changed |= UPDATE_AUTH_TYPE;
11979         }
11980
11981         wdev_lock(dev->ieee80211_ptr);
11982         if (!wdev->connected)
11983                 ret = -ENOLINK;
11984         else
11985                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11986         wdev_unlock(dev->ieee80211_ptr);
11987
11988         return ret;
11989 }
11990
11991 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11992 {
11993         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11994         struct net_device *dev = info->user_ptr[1];
11995         u16 reason;
11996         int ret;
11997
11998         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11999             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12000                 return -EPERM;
12001
12002         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12003                 reason = WLAN_REASON_DEAUTH_LEAVING;
12004         else
12005                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12006
12007         if (reason == 0)
12008                 return -EINVAL;
12009
12010         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12011             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12012                 return -EOPNOTSUPP;
12013
12014         wdev_lock(dev->ieee80211_ptr);
12015         ret = cfg80211_disconnect(rdev, dev, reason, true);
12016         wdev_unlock(dev->ieee80211_ptr);
12017         return ret;
12018 }
12019
12020 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12021 {
12022         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12023         struct net *net;
12024         int err;
12025
12026         if (info->attrs[NL80211_ATTR_PID]) {
12027                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12028
12029                 net = get_net_ns_by_pid(pid);
12030         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12031                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12032
12033                 net = get_net_ns_by_fd(fd);
12034         } else {
12035                 return -EINVAL;
12036         }
12037
12038         if (IS_ERR(net))
12039                 return PTR_ERR(net);
12040
12041         err = 0;
12042
12043         /* check if anything to do */
12044         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12045                 err = cfg80211_switch_netns(rdev, net);
12046
12047         put_net(net);
12048         return err;
12049 }
12050
12051 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
12052 {
12053         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12054         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
12055                         struct cfg80211_pmksa *pmksa) = NULL;
12056         struct net_device *dev = info->user_ptr[1];
12057         struct cfg80211_pmksa pmksa;
12058
12059         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12060
12061         if (!info->attrs[NL80211_ATTR_PMKID])
12062                 return -EINVAL;
12063
12064         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12065
12066         if (info->attrs[NL80211_ATTR_MAC]) {
12067                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12068         } else if (info->attrs[NL80211_ATTR_SSID] &&
12069                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12070                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
12071                     info->attrs[NL80211_ATTR_PMK])) {
12072                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12073                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12074                 pmksa.cache_id =
12075                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12076         } else {
12077                 return -EINVAL;
12078         }
12079         if (info->attrs[NL80211_ATTR_PMK]) {
12080                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12081                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12082         }
12083
12084         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12085                 pmksa.pmk_lifetime =
12086                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12087
12088         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12089                 pmksa.pmk_reauth_threshold =
12090                         nla_get_u8(
12091                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12092
12093         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12094             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12095             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12096               wiphy_ext_feature_isset(&rdev->wiphy,
12097                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12098                 return -EOPNOTSUPP;
12099
12100         switch (info->genlhdr->cmd) {
12101         case NL80211_CMD_SET_PMKSA:
12102                 rdev_ops = rdev->ops->set_pmksa;
12103                 break;
12104         case NL80211_CMD_DEL_PMKSA:
12105                 rdev_ops = rdev->ops->del_pmksa;
12106                 break;
12107         default:
12108                 WARN_ON(1);
12109                 break;
12110         }
12111
12112         if (!rdev_ops)
12113                 return -EOPNOTSUPP;
12114
12115         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12116 }
12117
12118 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12119 {
12120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12121         struct net_device *dev = info->user_ptr[1];
12122
12123         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12124             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12125                 return -EOPNOTSUPP;
12126
12127         if (!rdev->ops->flush_pmksa)
12128                 return -EOPNOTSUPP;
12129
12130         return rdev_flush_pmksa(rdev, dev);
12131 }
12132
12133 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12134 {
12135         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12136         struct net_device *dev = info->user_ptr[1];
12137         u8 action_code, dialog_token;
12138         u32 peer_capability = 0;
12139         u16 status_code;
12140         u8 *peer;
12141         bool initiator;
12142
12143         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12144             !rdev->ops->tdls_mgmt)
12145                 return -EOPNOTSUPP;
12146
12147         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12148             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12149             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12150             !info->attrs[NL80211_ATTR_IE] ||
12151             !info->attrs[NL80211_ATTR_MAC])
12152                 return -EINVAL;
12153
12154         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12155         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12156         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12157         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12158         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12159         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12160                 peer_capability =
12161                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12162
12163         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
12164                               dialog_token, status_code, peer_capability,
12165                               initiator,
12166                               nla_data(info->attrs[NL80211_ATTR_IE]),
12167                               nla_len(info->attrs[NL80211_ATTR_IE]));
12168 }
12169
12170 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12171 {
12172         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12173         struct net_device *dev = info->user_ptr[1];
12174         enum nl80211_tdls_operation operation;
12175         u8 *peer;
12176
12177         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12178             !rdev->ops->tdls_oper)
12179                 return -EOPNOTSUPP;
12180
12181         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12182             !info->attrs[NL80211_ATTR_MAC])
12183                 return -EINVAL;
12184
12185         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12186         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12187
12188         return rdev_tdls_oper(rdev, dev, peer, operation);
12189 }
12190
12191 static int nl80211_remain_on_channel(struct sk_buff *skb,
12192                                      struct genl_info *info)
12193 {
12194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12195         unsigned int link_id = nl80211_link_id(info->attrs);
12196         struct wireless_dev *wdev = info->user_ptr[1];
12197         struct cfg80211_chan_def chandef;
12198         struct sk_buff *msg;
12199         void *hdr;
12200         u64 cookie;
12201         u32 duration;
12202         int err;
12203
12204         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12205             !info->attrs[NL80211_ATTR_DURATION])
12206                 return -EINVAL;
12207
12208         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12209
12210         if (!rdev->ops->remain_on_channel ||
12211             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12212                 return -EOPNOTSUPP;
12213
12214         /*
12215          * We should be on that channel for at least a minimum amount of
12216          * time (10ms) but no longer than the driver supports.
12217          */
12218         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12219             duration > rdev->wiphy.max_remain_on_channel_duration)
12220                 return -EINVAL;
12221
12222         err = nl80211_parse_chandef(rdev, info, &chandef);
12223         if (err)
12224                 return err;
12225
12226         wdev_lock(wdev);
12227         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12228                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12229
12230                 oper_chandef = wdev_chandef(wdev, link_id);
12231
12232                 if (WARN_ON(!oper_chandef)) {
12233                         /* cannot happen since we must beacon to get here */
12234                         WARN_ON(1);
12235                         wdev_unlock(wdev);
12236                         return -EBUSY;
12237                 }
12238
12239                 /* note: returns first one if identical chandefs */
12240                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12241                                                              oper_chandef);
12242
12243                 if (compat_chandef != &chandef) {
12244                         wdev_unlock(wdev);
12245                         return -EBUSY;
12246                 }
12247         }
12248         wdev_unlock(wdev);
12249
12250         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12251         if (!msg)
12252                 return -ENOMEM;
12253
12254         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12255                              NL80211_CMD_REMAIN_ON_CHANNEL);
12256         if (!hdr) {
12257                 err = -ENOBUFS;
12258                 goto free_msg;
12259         }
12260
12261         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12262                                      duration, &cookie);
12263
12264         if (err)
12265                 goto free_msg;
12266
12267         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12268                               NL80211_ATTR_PAD))
12269                 goto nla_put_failure;
12270
12271         genlmsg_end(msg, hdr);
12272
12273         return genlmsg_reply(msg, info);
12274
12275  nla_put_failure:
12276         err = -ENOBUFS;
12277  free_msg:
12278         nlmsg_free(msg);
12279         return err;
12280 }
12281
12282 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12283                                             struct genl_info *info)
12284 {
12285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12286         struct wireless_dev *wdev = info->user_ptr[1];
12287         u64 cookie;
12288
12289         if (!info->attrs[NL80211_ATTR_COOKIE])
12290                 return -EINVAL;
12291
12292         if (!rdev->ops->cancel_remain_on_channel)
12293                 return -EOPNOTSUPP;
12294
12295         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12296
12297         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12298 }
12299
12300 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12301                                        struct genl_info *info)
12302 {
12303         struct cfg80211_bitrate_mask mask;
12304         unsigned int link_id = nl80211_link_id(info->attrs);
12305         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12306         struct net_device *dev = info->user_ptr[1];
12307         struct wireless_dev *wdev = dev->ieee80211_ptr;
12308         int err;
12309
12310         if (!rdev->ops->set_bitrate_mask)
12311                 return -EOPNOTSUPP;
12312
12313         wdev_lock(wdev);
12314         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12315                                             NL80211_ATTR_TX_RATES, &mask,
12316                                             dev, true, link_id);
12317         if (err)
12318                 goto out;
12319
12320         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12321 out:
12322         wdev_unlock(wdev);
12323         return err;
12324 }
12325
12326 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12327 {
12328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12329         struct wireless_dev *wdev = info->user_ptr[1];
12330         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12331
12332         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12333                 return -EINVAL;
12334
12335         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12336                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12337
12338         switch (wdev->iftype) {
12339         case NL80211_IFTYPE_STATION:
12340         case NL80211_IFTYPE_ADHOC:
12341         case NL80211_IFTYPE_P2P_CLIENT:
12342         case NL80211_IFTYPE_AP:
12343         case NL80211_IFTYPE_AP_VLAN:
12344         case NL80211_IFTYPE_MESH_POINT:
12345         case NL80211_IFTYPE_P2P_GO:
12346         case NL80211_IFTYPE_P2P_DEVICE:
12347                 break;
12348         case NL80211_IFTYPE_NAN:
12349                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12350                                              NL80211_EXT_FEATURE_SECURE_NAN))
12351                         return -EOPNOTSUPP;
12352                 break;
12353         default:
12354                 return -EOPNOTSUPP;
12355         }
12356
12357         /* not much point in registering if we can't reply */
12358         if (!rdev->ops->mgmt_tx)
12359                 return -EOPNOTSUPP;
12360
12361         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12362             !wiphy_ext_feature_isset(&rdev->wiphy,
12363                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12364                 GENL_SET_ERR_MSG(info,
12365                                  "multicast RX registrations are not supported");
12366                 return -EOPNOTSUPP;
12367         }
12368
12369         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12370                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12371                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12372                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12373                                            info->extack);
12374 }
12375
12376 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12377 {
12378         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12379         struct wireless_dev *wdev = info->user_ptr[1];
12380         struct cfg80211_chan_def chandef;
12381         int err;
12382         void *hdr = NULL;
12383         u64 cookie;
12384         struct sk_buff *msg = NULL;
12385         struct cfg80211_mgmt_tx_params params = {
12386                 .dont_wait_for_ack =
12387                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12388         };
12389
12390         if (!info->attrs[NL80211_ATTR_FRAME])
12391                 return -EINVAL;
12392
12393         if (!rdev->ops->mgmt_tx)
12394                 return -EOPNOTSUPP;
12395
12396         switch (wdev->iftype) {
12397         case NL80211_IFTYPE_P2P_DEVICE:
12398                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12399                         return -EINVAL;
12400                 break;
12401         case NL80211_IFTYPE_STATION:
12402         case NL80211_IFTYPE_ADHOC:
12403         case NL80211_IFTYPE_P2P_CLIENT:
12404         case NL80211_IFTYPE_AP:
12405         case NL80211_IFTYPE_AP_VLAN:
12406         case NL80211_IFTYPE_MESH_POINT:
12407         case NL80211_IFTYPE_P2P_GO:
12408                 break;
12409         case NL80211_IFTYPE_NAN:
12410                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12411                                              NL80211_EXT_FEATURE_SECURE_NAN))
12412                         return -EOPNOTSUPP;
12413                 break;
12414         default:
12415                 return -EOPNOTSUPP;
12416         }
12417
12418         if (info->attrs[NL80211_ATTR_DURATION]) {
12419                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12420                         return -EINVAL;
12421                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12422
12423                 /*
12424                  * We should wait on the channel for at least a minimum amount
12425                  * of time (10ms) but no longer than the driver supports.
12426                  */
12427                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12428                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12429                         return -EINVAL;
12430         }
12431
12432         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12433
12434         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12435                 return -EINVAL;
12436
12437         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12438
12439         /* get the channel if any has been specified, otherwise pass NULL to
12440          * the driver. The latter will use the current one
12441          */
12442         chandef.chan = NULL;
12443         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12444                 err = nl80211_parse_chandef(rdev, info, &chandef);
12445                 if (err)
12446                         return err;
12447         }
12448
12449         if (!chandef.chan && params.offchan)
12450                 return -EINVAL;
12451
12452         wdev_lock(wdev);
12453         if (params.offchan &&
12454             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12455                 wdev_unlock(wdev);
12456                 return -EBUSY;
12457         }
12458
12459         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12460         /*
12461          * This now races due to the unlock, but we cannot check
12462          * the valid links for the _station_ anyway, so that's up
12463          * to the driver.
12464          */
12465         if (params.link_id >= 0 &&
12466             !(wdev->valid_links & BIT(params.link_id))) {
12467                 wdev_unlock(wdev);
12468                 return -EINVAL;
12469         }
12470         wdev_unlock(wdev);
12471
12472         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12473         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12474
12475         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12476                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12477                 int i;
12478
12479                 if (len % sizeof(u16))
12480                         return -EINVAL;
12481
12482                 params.n_csa_offsets = len / sizeof(u16);
12483                 params.csa_offsets =
12484                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12485
12486                 /* check that all the offsets fit the frame */
12487                 for (i = 0; i < params.n_csa_offsets; i++) {
12488                         if (params.csa_offsets[i] >= params.len)
12489                                 return -EINVAL;
12490                 }
12491         }
12492
12493         if (!params.dont_wait_for_ack) {
12494                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12495                 if (!msg)
12496                         return -ENOMEM;
12497
12498                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12499                                      NL80211_CMD_FRAME);
12500                 if (!hdr) {
12501                         err = -ENOBUFS;
12502                         goto free_msg;
12503                 }
12504         }
12505
12506         params.chan = chandef.chan;
12507         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12508         if (err)
12509                 goto free_msg;
12510
12511         if (msg) {
12512                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12513                                       NL80211_ATTR_PAD))
12514                         goto nla_put_failure;
12515
12516                 genlmsg_end(msg, hdr);
12517                 return genlmsg_reply(msg, info);
12518         }
12519
12520         return 0;
12521
12522  nla_put_failure:
12523         err = -ENOBUFS;
12524  free_msg:
12525         nlmsg_free(msg);
12526         return err;
12527 }
12528
12529 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12530 {
12531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12532         struct wireless_dev *wdev = info->user_ptr[1];
12533         u64 cookie;
12534
12535         if (!info->attrs[NL80211_ATTR_COOKIE])
12536                 return -EINVAL;
12537
12538         if (!rdev->ops->mgmt_tx_cancel_wait)
12539                 return -EOPNOTSUPP;
12540
12541         switch (wdev->iftype) {
12542         case NL80211_IFTYPE_STATION:
12543         case NL80211_IFTYPE_ADHOC:
12544         case NL80211_IFTYPE_P2P_CLIENT:
12545         case NL80211_IFTYPE_AP:
12546         case NL80211_IFTYPE_AP_VLAN:
12547         case NL80211_IFTYPE_P2P_GO:
12548         case NL80211_IFTYPE_P2P_DEVICE:
12549                 break;
12550         case NL80211_IFTYPE_NAN:
12551                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12552                                              NL80211_EXT_FEATURE_SECURE_NAN))
12553                         return -EOPNOTSUPP;
12554                 break;
12555         default:
12556                 return -EOPNOTSUPP;
12557         }
12558
12559         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12560
12561         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12562 }
12563
12564 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12565 {
12566         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12567         struct wireless_dev *wdev;
12568         struct net_device *dev = info->user_ptr[1];
12569         u8 ps_state;
12570         bool state;
12571         int err;
12572
12573         if (!info->attrs[NL80211_ATTR_PS_STATE])
12574                 return -EINVAL;
12575
12576         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12577
12578         wdev = dev->ieee80211_ptr;
12579
12580         if (!rdev->ops->set_power_mgmt)
12581                 return -EOPNOTSUPP;
12582
12583         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12584
12585         if (state == wdev->ps)
12586                 return 0;
12587
12588         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12589         if (!err)
12590                 wdev->ps = state;
12591         return err;
12592 }
12593
12594 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12595 {
12596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12597         enum nl80211_ps_state ps_state;
12598         struct wireless_dev *wdev;
12599         struct net_device *dev = info->user_ptr[1];
12600         struct sk_buff *msg;
12601         void *hdr;
12602         int err;
12603
12604         wdev = dev->ieee80211_ptr;
12605
12606         if (!rdev->ops->set_power_mgmt)
12607                 return -EOPNOTSUPP;
12608
12609         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12610         if (!msg)
12611                 return -ENOMEM;
12612
12613         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12614                              NL80211_CMD_GET_POWER_SAVE);
12615         if (!hdr) {
12616                 err = -ENOBUFS;
12617                 goto free_msg;
12618         }
12619
12620         if (wdev->ps)
12621                 ps_state = NL80211_PS_ENABLED;
12622         else
12623                 ps_state = NL80211_PS_DISABLED;
12624
12625         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12626                 goto nla_put_failure;
12627
12628         genlmsg_end(msg, hdr);
12629         return genlmsg_reply(msg, info);
12630
12631  nla_put_failure:
12632         err = -ENOBUFS;
12633  free_msg:
12634         nlmsg_free(msg);
12635         return err;
12636 }
12637
12638 static const struct nla_policy
12639 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12640         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12641         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12642         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12643         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12644         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12645         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12646         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12647 };
12648
12649 static int nl80211_set_cqm_txe(struct genl_info *info,
12650                                u32 rate, u32 pkts, u32 intvl)
12651 {
12652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12653         struct net_device *dev = info->user_ptr[1];
12654         struct wireless_dev *wdev = dev->ieee80211_ptr;
12655
12656         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12657                 return -EINVAL;
12658
12659         if (!rdev->ops->set_cqm_txe_config)
12660                 return -EOPNOTSUPP;
12661
12662         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12663             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12664                 return -EOPNOTSUPP;
12665
12666         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12667 }
12668
12669 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12670                                     struct net_device *dev)
12671 {
12672         struct wireless_dev *wdev = dev->ieee80211_ptr;
12673         s32 last, low, high;
12674         u32 hyst;
12675         int i, n, low_index;
12676         int err;
12677
12678         /* RSSI reporting disabled? */
12679         if (!wdev->cqm_config)
12680                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12681
12682         /*
12683          * Obtain current RSSI value if possible, if not and no RSSI threshold
12684          * event has been received yet, we should receive an event after a
12685          * connection is established and enough beacons received to calculate
12686          * the average.
12687          */
12688         if (!wdev->cqm_config->last_rssi_event_value &&
12689             wdev->links[0].client.current_bss &&
12690             rdev->ops->get_station) {
12691                 struct station_info sinfo = {};
12692                 u8 *mac_addr;
12693
12694                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12695
12696                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12697                 if (err)
12698                         return err;
12699
12700                 cfg80211_sinfo_release_content(&sinfo);
12701                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12702                         wdev->cqm_config->last_rssi_event_value =
12703                                 (s8) sinfo.rx_beacon_signal_avg;
12704         }
12705
12706         last = wdev->cqm_config->last_rssi_event_value;
12707         hyst = wdev->cqm_config->rssi_hyst;
12708         n = wdev->cqm_config->n_rssi_thresholds;
12709
12710         for (i = 0; i < n; i++) {
12711                 i = array_index_nospec(i, n);
12712                 if (last < wdev->cqm_config->rssi_thresholds[i])
12713                         break;
12714         }
12715
12716         low_index = i - 1;
12717         if (low_index >= 0) {
12718                 low_index = array_index_nospec(low_index, n);
12719                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12720         } else {
12721                 low = S32_MIN;
12722         }
12723         if (i < n) {
12724                 i = array_index_nospec(i, n);
12725                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12726         } else {
12727                 high = S32_MAX;
12728         }
12729
12730         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12731 }
12732
12733 static int nl80211_set_cqm_rssi(struct genl_info *info,
12734                                 const s32 *thresholds, int n_thresholds,
12735                                 u32 hysteresis)
12736 {
12737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12738         struct net_device *dev = info->user_ptr[1];
12739         struct wireless_dev *wdev = dev->ieee80211_ptr;
12740         int i, err;
12741         s32 prev = S32_MIN;
12742
12743         /* Check all values negative and sorted */
12744         for (i = 0; i < n_thresholds; i++) {
12745                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12746                         return -EINVAL;
12747
12748                 prev = thresholds[i];
12749         }
12750
12751         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12752             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12753                 return -EOPNOTSUPP;
12754
12755         wdev_lock(wdev);
12756         cfg80211_cqm_config_free(wdev);
12757         wdev_unlock(wdev);
12758
12759         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12760                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12761                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12762
12763                 return rdev_set_cqm_rssi_config(rdev, dev,
12764                                                 thresholds[0], hysteresis);
12765         }
12766
12767         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12768                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12769                 return -EOPNOTSUPP;
12770
12771         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12772                 n_thresholds = 0;
12773
12774         wdev_lock(wdev);
12775         if (n_thresholds) {
12776                 struct cfg80211_cqm_config *cqm_config;
12777
12778                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12779                                                  n_thresholds),
12780                                      GFP_KERNEL);
12781                 if (!cqm_config) {
12782                         err = -ENOMEM;
12783                         goto unlock;
12784                 }
12785
12786                 cqm_config->rssi_hyst = hysteresis;
12787                 cqm_config->n_rssi_thresholds = n_thresholds;
12788                 memcpy(cqm_config->rssi_thresholds, thresholds,
12789                        flex_array_size(cqm_config, rssi_thresholds,
12790                                        n_thresholds));
12791
12792                 wdev->cqm_config = cqm_config;
12793         }
12794
12795         err = cfg80211_cqm_rssi_update(rdev, dev);
12796
12797 unlock:
12798         wdev_unlock(wdev);
12799
12800         return err;
12801 }
12802
12803 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12804 {
12805         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12806         struct nlattr *cqm;
12807         int err;
12808
12809         cqm = info->attrs[NL80211_ATTR_CQM];
12810         if (!cqm)
12811                 return -EINVAL;
12812
12813         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12814                                           nl80211_attr_cqm_policy,
12815                                           info->extack);
12816         if (err)
12817                 return err;
12818
12819         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12820             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12821                 const s32 *thresholds =
12822                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12823                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12824                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12825
12826                 if (len % 4)
12827                         return -EINVAL;
12828
12829                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12830                                             hysteresis);
12831         }
12832
12833         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12834             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12835             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12836                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12837                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12838                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12839
12840                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12841         }
12842
12843         return -EINVAL;
12844 }
12845
12846 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12847 {
12848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12849         struct net_device *dev = info->user_ptr[1];
12850         struct ocb_setup setup = {};
12851         int err;
12852
12853         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12854         if (err)
12855                 return err;
12856
12857         return cfg80211_join_ocb(rdev, dev, &setup);
12858 }
12859
12860 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12861 {
12862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12863         struct net_device *dev = info->user_ptr[1];
12864
12865         return cfg80211_leave_ocb(rdev, dev);
12866 }
12867
12868 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12869 {
12870         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12871         struct net_device *dev = info->user_ptr[1];
12872         struct mesh_config cfg;
12873         struct mesh_setup setup;
12874         int err;
12875
12876         /* start with default */
12877         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
12878         memcpy(&setup, &default_mesh_setup, sizeof(setup));
12879
12880         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
12881                 /* and parse parameters if given */
12882                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
12883                 if (err)
12884                         return err;
12885         }
12886
12887         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
12888             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
12889                 return -EINVAL;
12890
12891         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
12892         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
12893
12894         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
12895             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
12896                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
12897                         return -EINVAL;
12898
12899         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
12900                 setup.beacon_interval =
12901                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
12902
12903                 err = cfg80211_validate_beacon_int(rdev,
12904                                                    NL80211_IFTYPE_MESH_POINT,
12905                                                    setup.beacon_interval);
12906                 if (err)
12907                         return err;
12908         }
12909
12910         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
12911                 setup.dtim_period =
12912                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
12913                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
12914                         return -EINVAL;
12915         }
12916
12917         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
12918                 /* parse additional setup parameters if given */
12919                 err = nl80211_parse_mesh_setup(info, &setup);
12920                 if (err)
12921                         return err;
12922         }
12923
12924         if (setup.user_mpm)
12925                 cfg.auto_open_plinks = false;
12926
12927         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12928                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12929                 if (err)
12930                         return err;
12931         } else {
12932                 /* __cfg80211_join_mesh() will sort it out */
12933                 setup.chandef.chan = NULL;
12934         }
12935
12936         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
12937                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12938                 int n_rates =
12939                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12940                 struct ieee80211_supported_band *sband;
12941
12942                 if (!setup.chandef.chan)
12943                         return -EINVAL;
12944
12945                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
12946
12947                 err = ieee80211_get_ratemask(sband, rates, n_rates,
12948                                              &setup.basic_rates);
12949                 if (err)
12950                         return err;
12951         }
12952
12953         if (info->attrs[NL80211_ATTR_TX_RATES]) {
12954                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12955                                                     NL80211_ATTR_TX_RATES,
12956                                                     &setup.beacon_rate,
12957                                                     dev, false, 0);
12958                 if (err)
12959                         return err;
12960
12961                 if (!setup.chandef.chan)
12962                         return -EINVAL;
12963
12964                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
12965                                               &setup.beacon_rate);
12966                 if (err)
12967                         return err;
12968         }
12969
12970         setup.userspace_handles_dfs =
12971                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
12972
12973         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
12974                 int r = validate_pae_over_nl80211(rdev, info);
12975
12976                 if (r < 0)
12977                         return r;
12978
12979                 setup.control_port_over_nl80211 = true;
12980         }
12981
12982         wdev_lock(dev->ieee80211_ptr);
12983         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
12984         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
12985                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12986         wdev_unlock(dev->ieee80211_ptr);
12987
12988         return err;
12989 }
12990
12991 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12992 {
12993         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12994         struct net_device *dev = info->user_ptr[1];
12995
12996         return cfg80211_leave_mesh(rdev, dev);
12997 }
12998
12999 #ifdef CONFIG_PM
13000 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13001                                         struct cfg80211_registered_device *rdev)
13002 {
13003         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13004         struct nlattr *nl_pats, *nl_pat;
13005         int i, pat_len;
13006
13007         if (!wowlan->n_patterns)
13008                 return 0;
13009
13010         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13011         if (!nl_pats)
13012                 return -ENOBUFS;
13013
13014         for (i = 0; i < wowlan->n_patterns; i++) {
13015                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13016                 if (!nl_pat)
13017                         return -ENOBUFS;
13018                 pat_len = wowlan->patterns[i].pattern_len;
13019                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13020                             wowlan->patterns[i].mask) ||
13021                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13022                             wowlan->patterns[i].pattern) ||
13023                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13024                                 wowlan->patterns[i].pkt_offset))
13025                         return -ENOBUFS;
13026                 nla_nest_end(msg, nl_pat);
13027         }
13028         nla_nest_end(msg, nl_pats);
13029
13030         return 0;
13031 }
13032
13033 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13034                                    struct cfg80211_wowlan_tcp *tcp)
13035 {
13036         struct nlattr *nl_tcp;
13037
13038         if (!tcp)
13039                 return 0;
13040
13041         nl_tcp = nla_nest_start_noflag(msg,
13042                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13043         if (!nl_tcp)
13044                 return -ENOBUFS;
13045
13046         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13047             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13048             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13049             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13050             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13051             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13052                     tcp->payload_len, tcp->payload) ||
13053             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13054                         tcp->data_interval) ||
13055             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13056                     tcp->wake_len, tcp->wake_data) ||
13057             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13058                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13059                 return -ENOBUFS;
13060
13061         if (tcp->payload_seq.len &&
13062             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13063                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13064                 return -ENOBUFS;
13065
13066         if (tcp->payload_tok.len &&
13067             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13068                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13069                     &tcp->payload_tok))
13070                 return -ENOBUFS;
13071
13072         nla_nest_end(msg, nl_tcp);
13073
13074         return 0;
13075 }
13076
13077 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13078                                   struct cfg80211_sched_scan_request *req)
13079 {
13080         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13081         int i;
13082
13083         if (!req)
13084                 return 0;
13085
13086         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13087         if (!nd)
13088                 return -ENOBUFS;
13089
13090         if (req->n_scan_plans == 1 &&
13091             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13092                         req->scan_plans[0].interval * 1000))
13093                 return -ENOBUFS;
13094
13095         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13096                 return -ENOBUFS;
13097
13098         if (req->relative_rssi_set) {
13099                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13100
13101                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13102                                req->relative_rssi))
13103                         return -ENOBUFS;
13104
13105                 rssi_adjust.band = req->rssi_adjust.band;
13106                 rssi_adjust.delta = req->rssi_adjust.delta;
13107                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13108                             sizeof(rssi_adjust), &rssi_adjust))
13109                         return -ENOBUFS;
13110         }
13111
13112         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13113         if (!freqs)
13114                 return -ENOBUFS;
13115
13116         for (i = 0; i < req->n_channels; i++) {
13117                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13118                         return -ENOBUFS;
13119         }
13120
13121         nla_nest_end(msg, freqs);
13122
13123         if (req->n_match_sets) {
13124                 matches = nla_nest_start_noflag(msg,
13125                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13126                 if (!matches)
13127                         return -ENOBUFS;
13128
13129                 for (i = 0; i < req->n_match_sets; i++) {
13130                         match = nla_nest_start_noflag(msg, i);
13131                         if (!match)
13132                                 return -ENOBUFS;
13133
13134                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13135                                     req->match_sets[i].ssid.ssid_len,
13136                                     req->match_sets[i].ssid.ssid))
13137                                 return -ENOBUFS;
13138                         nla_nest_end(msg, match);
13139                 }
13140                 nla_nest_end(msg, matches);
13141         }
13142
13143         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13144         if (!scan_plans)
13145                 return -ENOBUFS;
13146
13147         for (i = 0; i < req->n_scan_plans; i++) {
13148                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13149                 if (!scan_plan)
13150                         return -ENOBUFS;
13151
13152                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13153                                 req->scan_plans[i].interval) ||
13154                     (req->scan_plans[i].iterations &&
13155                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13156                                  req->scan_plans[i].iterations)))
13157                         return -ENOBUFS;
13158                 nla_nest_end(msg, scan_plan);
13159         }
13160         nla_nest_end(msg, scan_plans);
13161
13162         nla_nest_end(msg, nd);
13163
13164         return 0;
13165 }
13166
13167 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13168 {
13169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13170         struct sk_buff *msg;
13171         void *hdr;
13172         u32 size = NLMSG_DEFAULT_SIZE;
13173
13174         if (!rdev->wiphy.wowlan)
13175                 return -EOPNOTSUPP;
13176
13177         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13178                 /* adjust size to have room for all the data */
13179                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13180                         rdev->wiphy.wowlan_config->tcp->payload_len +
13181                         rdev->wiphy.wowlan_config->tcp->wake_len +
13182                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13183         }
13184
13185         msg = nlmsg_new(size, GFP_KERNEL);
13186         if (!msg)
13187                 return -ENOMEM;
13188
13189         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13190                              NL80211_CMD_GET_WOWLAN);
13191         if (!hdr)
13192                 goto nla_put_failure;
13193
13194         if (rdev->wiphy.wowlan_config) {
13195                 struct nlattr *nl_wowlan;
13196
13197                 nl_wowlan = nla_nest_start_noflag(msg,
13198                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13199                 if (!nl_wowlan)
13200                         goto nla_put_failure;
13201
13202                 if ((rdev->wiphy.wowlan_config->any &&
13203                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13204                     (rdev->wiphy.wowlan_config->disconnect &&
13205                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13206                     (rdev->wiphy.wowlan_config->magic_pkt &&
13207                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13208                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13209                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13210                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13211                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13212                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13213                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13214                     (rdev->wiphy.wowlan_config->rfkill_release &&
13215                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13216                         goto nla_put_failure;
13217
13218                 if (nl80211_send_wowlan_patterns(msg, rdev))
13219                         goto nla_put_failure;
13220
13221                 if (nl80211_send_wowlan_tcp(msg,
13222                                             rdev->wiphy.wowlan_config->tcp))
13223                         goto nla_put_failure;
13224
13225                 if (nl80211_send_wowlan_nd(
13226                             msg,
13227                             rdev->wiphy.wowlan_config->nd_config))
13228                         goto nla_put_failure;
13229
13230                 nla_nest_end(msg, nl_wowlan);
13231         }
13232
13233         genlmsg_end(msg, hdr);
13234         return genlmsg_reply(msg, info);
13235
13236 nla_put_failure:
13237         nlmsg_free(msg);
13238         return -ENOBUFS;
13239 }
13240
13241 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13242                                     struct nlattr *attr,
13243                                     struct cfg80211_wowlan *trig)
13244 {
13245         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13246         struct cfg80211_wowlan_tcp *cfg;
13247         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13248         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13249         u32 size;
13250         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13251         int err, port;
13252
13253         if (!rdev->wiphy.wowlan->tcp)
13254                 return -EINVAL;
13255
13256         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13257                                           nl80211_wowlan_tcp_policy, NULL);
13258         if (err)
13259                 return err;
13260
13261         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13262             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13263             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13264             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13265             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13266             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13267             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13268             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13269                 return -EINVAL;
13270
13271         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13272         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13273                 return -EINVAL;
13274
13275         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13276                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13277             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13278                 return -EINVAL;
13279
13280         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13281         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13282                 return -EINVAL;
13283
13284         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13285         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13286                 return -EINVAL;
13287
13288         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13289                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13290
13291                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13292                 tokens_size = tokln - sizeof(*tok);
13293
13294                 if (!tok->len || tokens_size % tok->len)
13295                         return -EINVAL;
13296                 if (!rdev->wiphy.wowlan->tcp->tok)
13297                         return -EINVAL;
13298                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13299                         return -EINVAL;
13300                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13301                         return -EINVAL;
13302                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13303                         return -EINVAL;
13304                 if (tok->offset + tok->len > data_size)
13305                         return -EINVAL;
13306         }
13307
13308         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13309                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13310                 if (!rdev->wiphy.wowlan->tcp->seq)
13311                         return -EINVAL;
13312                 if (seq->len == 0 || seq->len > 4)
13313                         return -EINVAL;
13314                 if (seq->len + seq->offset > data_size)
13315                         return -EINVAL;
13316         }
13317
13318         size = sizeof(*cfg);
13319         size += data_size;
13320         size += wake_size + wake_mask_size;
13321         size += tokens_size;
13322
13323         cfg = kzalloc(size, GFP_KERNEL);
13324         if (!cfg)
13325                 return -ENOMEM;
13326         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13327         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13328         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13329                ETH_ALEN);
13330         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13331                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13332         else
13333                 port = 0;
13334 #ifdef CONFIG_INET
13335         /* allocate a socket and port for it and use it */
13336         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13337                             IPPROTO_TCP, &cfg->sock, 1);
13338         if (err) {
13339                 kfree(cfg);
13340                 return err;
13341         }
13342         if (inet_csk_get_port(cfg->sock->sk, port)) {
13343                 sock_release(cfg->sock);
13344                 kfree(cfg);
13345                 return -EADDRINUSE;
13346         }
13347         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13348 #else
13349         if (!port) {
13350                 kfree(cfg);
13351                 return -EINVAL;
13352         }
13353         cfg->src_port = port;
13354 #endif
13355
13356         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13357         cfg->payload_len = data_size;
13358         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13359         memcpy((void *)cfg->payload,
13360                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13361                data_size);
13362         if (seq)
13363                 cfg->payload_seq = *seq;
13364         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13365         cfg->wake_len = wake_size;
13366         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13367         memcpy((void *)cfg->wake_data,
13368                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13369                wake_size);
13370         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13371                          data_size + wake_size;
13372         memcpy((void *)cfg->wake_mask,
13373                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13374                wake_mask_size);
13375         if (tok) {
13376                 cfg->tokens_size = tokens_size;
13377                 cfg->payload_tok = *tok;
13378                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13379                        tokens_size);
13380         }
13381
13382         trig->tcp = cfg;
13383
13384         return 0;
13385 }
13386
13387 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13388                                    const struct wiphy_wowlan_support *wowlan,
13389                                    struct nlattr *attr,
13390                                    struct cfg80211_wowlan *trig)
13391 {
13392         struct nlattr **tb;
13393         int err;
13394
13395         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13396         if (!tb)
13397                 return -ENOMEM;
13398
13399         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13400                 err = -EOPNOTSUPP;
13401                 goto out;
13402         }
13403
13404         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13405                                           nl80211_policy, NULL);
13406         if (err)
13407                 goto out;
13408
13409         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13410                                                    wowlan->max_nd_match_sets);
13411         err = PTR_ERR_OR_ZERO(trig->nd_config);
13412         if (err)
13413                 trig->nd_config = NULL;
13414
13415 out:
13416         kfree(tb);
13417         return err;
13418 }
13419
13420 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13421 {
13422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13423         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13424         struct cfg80211_wowlan new_triggers = {};
13425         struct cfg80211_wowlan *ntrig;
13426         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13427         int err, i;
13428         bool prev_enabled = rdev->wiphy.wowlan_config;
13429         bool regular = false;
13430
13431         if (!wowlan)
13432                 return -EOPNOTSUPP;
13433
13434         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13435                 cfg80211_rdev_free_wowlan(rdev);
13436                 rdev->wiphy.wowlan_config = NULL;
13437                 goto set_wakeup;
13438         }
13439
13440         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13441                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13442                                           nl80211_wowlan_policy, info->extack);
13443         if (err)
13444                 return err;
13445
13446         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13447                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13448                         return -EINVAL;
13449                 new_triggers.any = true;
13450         }
13451
13452         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13453                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13454                         return -EINVAL;
13455                 new_triggers.disconnect = true;
13456                 regular = true;
13457         }
13458
13459         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13460                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13461                         return -EINVAL;
13462                 new_triggers.magic_pkt = true;
13463                 regular = true;
13464         }
13465
13466         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13467                 return -EINVAL;
13468
13469         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13470                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13471                         return -EINVAL;
13472                 new_triggers.gtk_rekey_failure = true;
13473                 regular = true;
13474         }
13475
13476         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13477                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13478                         return -EINVAL;
13479                 new_triggers.eap_identity_req = true;
13480                 regular = true;
13481         }
13482
13483         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13484                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13485                         return -EINVAL;
13486                 new_triggers.four_way_handshake = true;
13487                 regular = true;
13488         }
13489
13490         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13491                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13492                         return -EINVAL;
13493                 new_triggers.rfkill_release = true;
13494                 regular = true;
13495         }
13496
13497         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13498                 struct nlattr *pat;
13499                 int n_patterns = 0;
13500                 int rem, pat_len, mask_len, pkt_offset;
13501                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13502
13503                 regular = true;
13504
13505                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13506                                     rem)
13507                         n_patterns++;
13508                 if (n_patterns > wowlan->n_patterns)
13509                         return -EINVAL;
13510
13511                 new_triggers.patterns = kcalloc(n_patterns,
13512                                                 sizeof(new_triggers.patterns[0]),
13513                                                 GFP_KERNEL);
13514                 if (!new_triggers.patterns)
13515                         return -ENOMEM;
13516
13517                 new_triggers.n_patterns = n_patterns;
13518                 i = 0;
13519
13520                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13521                                     rem) {
13522                         u8 *mask_pat;
13523
13524                         err = nla_parse_nested_deprecated(pat_tb,
13525                                                           MAX_NL80211_PKTPAT,
13526                                                           pat,
13527                                                           nl80211_packet_pattern_policy,
13528                                                           info->extack);
13529                         if (err)
13530                                 goto error;
13531
13532                         err = -EINVAL;
13533                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13534                             !pat_tb[NL80211_PKTPAT_PATTERN])
13535                                 goto error;
13536                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13537                         mask_len = DIV_ROUND_UP(pat_len, 8);
13538                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13539                                 goto error;
13540                         if (pat_len > wowlan->pattern_max_len ||
13541                             pat_len < wowlan->pattern_min_len)
13542                                 goto error;
13543
13544                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13545                                 pkt_offset = 0;
13546                         else
13547                                 pkt_offset = nla_get_u32(
13548                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13549                         if (pkt_offset > wowlan->max_pkt_offset)
13550                                 goto error;
13551                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13552
13553                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13554                         if (!mask_pat) {
13555                                 err = -ENOMEM;
13556                                 goto error;
13557                         }
13558                         new_triggers.patterns[i].mask = mask_pat;
13559                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13560                                mask_len);
13561                         mask_pat += mask_len;
13562                         new_triggers.patterns[i].pattern = mask_pat;
13563                         new_triggers.patterns[i].pattern_len = pat_len;
13564                         memcpy(mask_pat,
13565                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13566                                pat_len);
13567                         i++;
13568                 }
13569         }
13570
13571         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13572                 regular = true;
13573                 err = nl80211_parse_wowlan_tcp(
13574                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13575                         &new_triggers);
13576                 if (err)
13577                         goto error;
13578         }
13579
13580         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13581                 regular = true;
13582                 err = nl80211_parse_wowlan_nd(
13583                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13584                         &new_triggers);
13585                 if (err)
13586                         goto error;
13587         }
13588
13589         /* The 'any' trigger means the device continues operating more or less
13590          * as in its normal operation mode and wakes up the host on most of the
13591          * normal interrupts (like packet RX, ...)
13592          * It therefore makes little sense to combine with the more constrained
13593          * wakeup trigger modes.
13594          */
13595         if (new_triggers.any && regular) {
13596                 err = -EINVAL;
13597                 goto error;
13598         }
13599
13600         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13601         if (!ntrig) {
13602                 err = -ENOMEM;
13603                 goto error;
13604         }
13605         cfg80211_rdev_free_wowlan(rdev);
13606         rdev->wiphy.wowlan_config = ntrig;
13607
13608  set_wakeup:
13609         if (rdev->ops->set_wakeup &&
13610             prev_enabled != !!rdev->wiphy.wowlan_config)
13611                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13612
13613         return 0;
13614  error:
13615         for (i = 0; i < new_triggers.n_patterns; i++)
13616                 kfree(new_triggers.patterns[i].mask);
13617         kfree(new_triggers.patterns);
13618         if (new_triggers.tcp && new_triggers.tcp->sock)
13619                 sock_release(new_triggers.tcp->sock);
13620         kfree(new_triggers.tcp);
13621         kfree(new_triggers.nd_config);
13622         return err;
13623 }
13624 #endif
13625
13626 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13627                                        struct cfg80211_registered_device *rdev)
13628 {
13629         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13630         int i, j, pat_len;
13631         struct cfg80211_coalesce_rules *rule;
13632
13633         if (!rdev->coalesce->n_rules)
13634                 return 0;
13635
13636         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13637         if (!nl_rules)
13638                 return -ENOBUFS;
13639
13640         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13641                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13642                 if (!nl_rule)
13643                         return -ENOBUFS;
13644
13645                 rule = &rdev->coalesce->rules[i];
13646                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13647                                 rule->delay))
13648                         return -ENOBUFS;
13649
13650                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13651                                 rule->condition))
13652                         return -ENOBUFS;
13653
13654                 nl_pats = nla_nest_start_noflag(msg,
13655                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13656                 if (!nl_pats)
13657                         return -ENOBUFS;
13658
13659                 for (j = 0; j < rule->n_patterns; j++) {
13660                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13661                         if (!nl_pat)
13662                                 return -ENOBUFS;
13663                         pat_len = rule->patterns[j].pattern_len;
13664                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13665                                     DIV_ROUND_UP(pat_len, 8),
13666                                     rule->patterns[j].mask) ||
13667                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13668                                     rule->patterns[j].pattern) ||
13669                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13670                                         rule->patterns[j].pkt_offset))
13671                                 return -ENOBUFS;
13672                         nla_nest_end(msg, nl_pat);
13673                 }
13674                 nla_nest_end(msg, nl_pats);
13675                 nla_nest_end(msg, nl_rule);
13676         }
13677         nla_nest_end(msg, nl_rules);
13678
13679         return 0;
13680 }
13681
13682 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13683 {
13684         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13685         struct sk_buff *msg;
13686         void *hdr;
13687
13688         if (!rdev->wiphy.coalesce)
13689                 return -EOPNOTSUPP;
13690
13691         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13692         if (!msg)
13693                 return -ENOMEM;
13694
13695         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13696                              NL80211_CMD_GET_COALESCE);
13697         if (!hdr)
13698                 goto nla_put_failure;
13699
13700         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13701                 goto nla_put_failure;
13702
13703         genlmsg_end(msg, hdr);
13704         return genlmsg_reply(msg, info);
13705
13706 nla_put_failure:
13707         nlmsg_free(msg);
13708         return -ENOBUFS;
13709 }
13710
13711 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13712 {
13713         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13714         int i, j;
13715         struct cfg80211_coalesce_rules *rule;
13716
13717         if (!coalesce)
13718                 return;
13719
13720         for (i = 0; i < coalesce->n_rules; i++) {
13721                 rule = &coalesce->rules[i];
13722                 for (j = 0; j < rule->n_patterns; j++)
13723                         kfree(rule->patterns[j].mask);
13724                 kfree(rule->patterns);
13725         }
13726         kfree(coalesce->rules);
13727         kfree(coalesce);
13728         rdev->coalesce = NULL;
13729 }
13730
13731 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13732                                        struct nlattr *rule,
13733                                        struct cfg80211_coalesce_rules *new_rule)
13734 {
13735         int err, i;
13736         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13737         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13738         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13739         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13740
13741         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13742                                           rule, nl80211_coalesce_policy, NULL);
13743         if (err)
13744                 return err;
13745
13746         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13747                 new_rule->delay =
13748                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13749         if (new_rule->delay > coalesce->max_delay)
13750                 return -EINVAL;
13751
13752         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13753                 new_rule->condition =
13754                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13755
13756         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13757                 return -EINVAL;
13758
13759         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13760                             rem)
13761                 n_patterns++;
13762         if (n_patterns > coalesce->n_patterns)
13763                 return -EINVAL;
13764
13765         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13766                                      GFP_KERNEL);
13767         if (!new_rule->patterns)
13768                 return -ENOMEM;
13769
13770         new_rule->n_patterns = n_patterns;
13771         i = 0;
13772
13773         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13774                             rem) {
13775                 u8 *mask_pat;
13776
13777                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13778                                                   pat,
13779                                                   nl80211_packet_pattern_policy,
13780                                                   NULL);
13781                 if (err)
13782                         return err;
13783
13784                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13785                     !pat_tb[NL80211_PKTPAT_PATTERN])
13786                         return -EINVAL;
13787                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13788                 mask_len = DIV_ROUND_UP(pat_len, 8);
13789                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13790                         return -EINVAL;
13791                 if (pat_len > coalesce->pattern_max_len ||
13792                     pat_len < coalesce->pattern_min_len)
13793                         return -EINVAL;
13794
13795                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13796                         pkt_offset = 0;
13797                 else
13798                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13799                 if (pkt_offset > coalesce->max_pkt_offset)
13800                         return -EINVAL;
13801                 new_rule->patterns[i].pkt_offset = pkt_offset;
13802
13803                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13804                 if (!mask_pat)
13805                         return -ENOMEM;
13806
13807                 new_rule->patterns[i].mask = mask_pat;
13808                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13809                        mask_len);
13810
13811                 mask_pat += mask_len;
13812                 new_rule->patterns[i].pattern = mask_pat;
13813                 new_rule->patterns[i].pattern_len = pat_len;
13814                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13815                        pat_len);
13816                 i++;
13817         }
13818
13819         return 0;
13820 }
13821
13822 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13823 {
13824         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13825         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13826         struct cfg80211_coalesce new_coalesce = {};
13827         struct cfg80211_coalesce *n_coalesce;
13828         int err, rem_rule, n_rules = 0, i, j;
13829         struct nlattr *rule;
13830         struct cfg80211_coalesce_rules *tmp_rule;
13831
13832         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13833                 return -EOPNOTSUPP;
13834
13835         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13836                 cfg80211_rdev_free_coalesce(rdev);
13837                 rdev_set_coalesce(rdev, NULL);
13838                 return 0;
13839         }
13840
13841         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13842                             rem_rule)
13843                 n_rules++;
13844         if (n_rules > coalesce->n_rules)
13845                 return -EINVAL;
13846
13847         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13848                                      GFP_KERNEL);
13849         if (!new_coalesce.rules)
13850                 return -ENOMEM;
13851
13852         new_coalesce.n_rules = n_rules;
13853         i = 0;
13854
13855         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13856                             rem_rule) {
13857                 err = nl80211_parse_coalesce_rule(rdev, rule,
13858                                                   &new_coalesce.rules[i]);
13859                 if (err)
13860                         goto error;
13861
13862                 i++;
13863         }
13864
13865         err = rdev_set_coalesce(rdev, &new_coalesce);
13866         if (err)
13867                 goto error;
13868
13869         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13870         if (!n_coalesce) {
13871                 err = -ENOMEM;
13872                 goto error;
13873         }
13874         cfg80211_rdev_free_coalesce(rdev);
13875         rdev->coalesce = n_coalesce;
13876
13877         return 0;
13878 error:
13879         for (i = 0; i < new_coalesce.n_rules; i++) {
13880                 tmp_rule = &new_coalesce.rules[i];
13881                 for (j = 0; j < tmp_rule->n_patterns; j++)
13882                         kfree(tmp_rule->patterns[j].mask);
13883                 kfree(tmp_rule->patterns);
13884         }
13885         kfree(new_coalesce.rules);
13886
13887         return err;
13888 }
13889
13890 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
13891 {
13892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13893         struct net_device *dev = info->user_ptr[1];
13894         struct wireless_dev *wdev = dev->ieee80211_ptr;
13895         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
13896         struct cfg80211_gtk_rekey_data rekey_data = {};
13897         int err;
13898
13899         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
13900                 return -EINVAL;
13901
13902         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
13903                                           info->attrs[NL80211_ATTR_REKEY_DATA],
13904                                           nl80211_rekey_policy, info->extack);
13905         if (err)
13906                 return err;
13907
13908         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
13909             !tb[NL80211_REKEY_DATA_KCK])
13910                 return -EINVAL;
13911         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
13912             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13913               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
13914                 return -ERANGE;
13915         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
13916             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13917               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
13918              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
13919                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
13920                 return -ERANGE;
13921
13922         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
13923         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
13924         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
13925         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
13926         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
13927         if (tb[NL80211_REKEY_DATA_AKM])
13928                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
13929
13930         wdev_lock(wdev);
13931         if (!wdev->connected) {
13932                 err = -ENOTCONN;
13933                 goto out;
13934         }
13935
13936         if (!rdev->ops->set_rekey_data) {
13937                 err = -EOPNOTSUPP;
13938                 goto out;
13939         }
13940
13941         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
13942  out:
13943         wdev_unlock(wdev);
13944         return err;
13945 }
13946
13947 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
13948                                              struct genl_info *info)
13949 {
13950         struct net_device *dev = info->user_ptr[1];
13951         struct wireless_dev *wdev = dev->ieee80211_ptr;
13952
13953         if (wdev->iftype != NL80211_IFTYPE_AP &&
13954             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13955                 return -EINVAL;
13956
13957         if (wdev->ap_unexpected_nlportid)
13958                 return -EBUSY;
13959
13960         wdev->ap_unexpected_nlportid = info->snd_portid;
13961         return 0;
13962 }
13963
13964 static int nl80211_probe_client(struct sk_buff *skb,
13965                                 struct genl_info *info)
13966 {
13967         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13968         struct net_device *dev = info->user_ptr[1];
13969         struct wireless_dev *wdev = dev->ieee80211_ptr;
13970         struct sk_buff *msg;
13971         void *hdr;
13972         const u8 *addr;
13973         u64 cookie;
13974         int err;
13975
13976         if (wdev->iftype != NL80211_IFTYPE_AP &&
13977             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13978                 return -EOPNOTSUPP;
13979
13980         if (!info->attrs[NL80211_ATTR_MAC])
13981                 return -EINVAL;
13982
13983         if (!rdev->ops->probe_client)
13984                 return -EOPNOTSUPP;
13985
13986         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13987         if (!msg)
13988                 return -ENOMEM;
13989
13990         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13991                              NL80211_CMD_PROBE_CLIENT);
13992         if (!hdr) {
13993                 err = -ENOBUFS;
13994                 goto free_msg;
13995         }
13996
13997         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13998
13999         err = rdev_probe_client(rdev, dev, addr, &cookie);
14000         if (err)
14001                 goto free_msg;
14002
14003         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14004                               NL80211_ATTR_PAD))
14005                 goto nla_put_failure;
14006
14007         genlmsg_end(msg, hdr);
14008
14009         return genlmsg_reply(msg, info);
14010
14011  nla_put_failure:
14012         err = -ENOBUFS;
14013  free_msg:
14014         nlmsg_free(msg);
14015         return err;
14016 }
14017
14018 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14019 {
14020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14021         struct cfg80211_beacon_registration *reg, *nreg;
14022         int rv;
14023
14024         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14025                 return -EOPNOTSUPP;
14026
14027         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14028         if (!nreg)
14029                 return -ENOMEM;
14030
14031         /* First, check if already registered. */
14032         spin_lock_bh(&rdev->beacon_registrations_lock);
14033         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14034                 if (reg->nlportid == info->snd_portid) {
14035                         rv = -EALREADY;
14036                         goto out_err;
14037                 }
14038         }
14039         /* Add it to the list */
14040         nreg->nlportid = info->snd_portid;
14041         list_add(&nreg->list, &rdev->beacon_registrations);
14042
14043         spin_unlock_bh(&rdev->beacon_registrations_lock);
14044
14045         return 0;
14046 out_err:
14047         spin_unlock_bh(&rdev->beacon_registrations_lock);
14048         kfree(nreg);
14049         return rv;
14050 }
14051
14052 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14053 {
14054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14055         struct wireless_dev *wdev = info->user_ptr[1];
14056         int err;
14057
14058         if (!rdev->ops->start_p2p_device)
14059                 return -EOPNOTSUPP;
14060
14061         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14062                 return -EOPNOTSUPP;
14063
14064         if (wdev_running(wdev))
14065                 return 0;
14066
14067         if (rfkill_blocked(rdev->wiphy.rfkill))
14068                 return -ERFKILL;
14069
14070         err = rdev_start_p2p_device(rdev, wdev);
14071         if (err)
14072                 return err;
14073
14074         wdev->is_running = true;
14075         rdev->opencount++;
14076
14077         return 0;
14078 }
14079
14080 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14081 {
14082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14083         struct wireless_dev *wdev = info->user_ptr[1];
14084
14085         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14086                 return -EOPNOTSUPP;
14087
14088         if (!rdev->ops->stop_p2p_device)
14089                 return -EOPNOTSUPP;
14090
14091         cfg80211_stop_p2p_device(rdev, wdev);
14092
14093         return 0;
14094 }
14095
14096 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14097 {
14098         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14099         struct wireless_dev *wdev = info->user_ptr[1];
14100         struct cfg80211_nan_conf conf = {};
14101         int err;
14102
14103         if (wdev->iftype != NL80211_IFTYPE_NAN)
14104                 return -EOPNOTSUPP;
14105
14106         if (wdev_running(wdev))
14107                 return -EEXIST;
14108
14109         if (rfkill_blocked(rdev->wiphy.rfkill))
14110                 return -ERFKILL;
14111
14112         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14113                 return -EINVAL;
14114
14115         conf.master_pref =
14116                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14117
14118         if (info->attrs[NL80211_ATTR_BANDS]) {
14119                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14120
14121                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14122                         return -EOPNOTSUPP;
14123
14124                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14125                         return -EINVAL;
14126
14127                 conf.bands = bands;
14128         }
14129
14130         err = rdev_start_nan(rdev, wdev, &conf);
14131         if (err)
14132                 return err;
14133
14134         wdev->is_running = true;
14135         rdev->opencount++;
14136
14137         return 0;
14138 }
14139
14140 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14141 {
14142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14143         struct wireless_dev *wdev = info->user_ptr[1];
14144
14145         if (wdev->iftype != NL80211_IFTYPE_NAN)
14146                 return -EOPNOTSUPP;
14147
14148         cfg80211_stop_nan(rdev, wdev);
14149
14150         return 0;
14151 }
14152
14153 static int validate_nan_filter(struct nlattr *filter_attr)
14154 {
14155         struct nlattr *attr;
14156         int len = 0, n_entries = 0, rem;
14157
14158         nla_for_each_nested(attr, filter_attr, rem) {
14159                 len += nla_len(attr);
14160                 n_entries++;
14161         }
14162
14163         if (len >= U8_MAX)
14164                 return -EINVAL;
14165
14166         return n_entries;
14167 }
14168
14169 static int handle_nan_filter(struct nlattr *attr_filter,
14170                              struct cfg80211_nan_func *func,
14171                              bool tx)
14172 {
14173         struct nlattr *attr;
14174         int n_entries, rem, i;
14175         struct cfg80211_nan_func_filter *filter;
14176
14177         n_entries = validate_nan_filter(attr_filter);
14178         if (n_entries < 0)
14179                 return n_entries;
14180
14181         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14182
14183         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14184         if (!filter)
14185                 return -ENOMEM;
14186
14187         i = 0;
14188         nla_for_each_nested(attr, attr_filter, rem) {
14189                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14190                 if (!filter[i].filter)
14191                         goto err;
14192
14193                 filter[i].len = nla_len(attr);
14194                 i++;
14195         }
14196         if (tx) {
14197                 func->num_tx_filters = n_entries;
14198                 func->tx_filters = filter;
14199         } else {
14200                 func->num_rx_filters = n_entries;
14201                 func->rx_filters = filter;
14202         }
14203
14204         return 0;
14205
14206 err:
14207         i = 0;
14208         nla_for_each_nested(attr, attr_filter, rem) {
14209                 kfree(filter[i].filter);
14210                 i++;
14211         }
14212         kfree(filter);
14213         return -ENOMEM;
14214 }
14215
14216 static int nl80211_nan_add_func(struct sk_buff *skb,
14217                                 struct genl_info *info)
14218 {
14219         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14220         struct wireless_dev *wdev = info->user_ptr[1];
14221         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14222         struct cfg80211_nan_func *func;
14223         struct sk_buff *msg = NULL;
14224         void *hdr = NULL;
14225         int err = 0;
14226
14227         if (wdev->iftype != NL80211_IFTYPE_NAN)
14228                 return -EOPNOTSUPP;
14229
14230         if (!wdev_running(wdev))
14231                 return -ENOTCONN;
14232
14233         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14234                 return -EINVAL;
14235
14236         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14237                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14238                                           nl80211_nan_func_policy,
14239                                           info->extack);
14240         if (err)
14241                 return err;
14242
14243         func = kzalloc(sizeof(*func), GFP_KERNEL);
14244         if (!func)
14245                 return -ENOMEM;
14246
14247         func->cookie = cfg80211_assign_cookie(rdev);
14248
14249         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14250                 err = -EINVAL;
14251                 goto out;
14252         }
14253
14254
14255         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14256
14257         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14258                 err = -EINVAL;
14259                 goto out;
14260         }
14261
14262         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14263                sizeof(func->service_id));
14264
14265         func->close_range =
14266                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14267
14268         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14269                 func->serv_spec_info_len =
14270                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14271                 func->serv_spec_info =
14272                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14273                                 func->serv_spec_info_len,
14274                                 GFP_KERNEL);
14275                 if (!func->serv_spec_info) {
14276                         err = -ENOMEM;
14277                         goto out;
14278                 }
14279         }
14280
14281         if (tb[NL80211_NAN_FUNC_TTL])
14282                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14283
14284         switch (func->type) {
14285         case NL80211_NAN_FUNC_PUBLISH:
14286                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14287                         err = -EINVAL;
14288                         goto out;
14289                 }
14290
14291                 func->publish_type =
14292                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14293                 func->publish_bcast =
14294                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14295
14296                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14297                         func->publish_bcast) {
14298                         err = -EINVAL;
14299                         goto out;
14300                 }
14301                 break;
14302         case NL80211_NAN_FUNC_SUBSCRIBE:
14303                 func->subscribe_active =
14304                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14305                 break;
14306         case NL80211_NAN_FUNC_FOLLOW_UP:
14307                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14308                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14309                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14310                         err = -EINVAL;
14311                         goto out;
14312                 }
14313
14314                 func->followup_id =
14315                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14316                 func->followup_reqid =
14317                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14318                 memcpy(func->followup_dest.addr,
14319                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14320                        sizeof(func->followup_dest.addr));
14321                 if (func->ttl) {
14322                         err = -EINVAL;
14323                         goto out;
14324                 }
14325                 break;
14326         default:
14327                 err = -EINVAL;
14328                 goto out;
14329         }
14330
14331         if (tb[NL80211_NAN_FUNC_SRF]) {
14332                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14333
14334                 err = nla_parse_nested_deprecated(srf_tb,
14335                                                   NL80211_NAN_SRF_ATTR_MAX,
14336                                                   tb[NL80211_NAN_FUNC_SRF],
14337                                                   nl80211_nan_srf_policy,
14338                                                   info->extack);
14339                 if (err)
14340                         goto out;
14341
14342                 func->srf_include =
14343                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14344
14345                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14346                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14347                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14348                                 err = -EINVAL;
14349                                 goto out;
14350                         }
14351
14352                         func->srf_bf_len =
14353                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14354                         func->srf_bf =
14355                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14356                                         func->srf_bf_len, GFP_KERNEL);
14357                         if (!func->srf_bf) {
14358                                 err = -ENOMEM;
14359                                 goto out;
14360                         }
14361
14362                         func->srf_bf_idx =
14363                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14364                 } else {
14365                         struct nlattr *attr, *mac_attr =
14366                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14367                         int n_entries, rem, i = 0;
14368
14369                         if (!mac_attr) {
14370                                 err = -EINVAL;
14371                                 goto out;
14372                         }
14373
14374                         n_entries = validate_acl_mac_addrs(mac_attr);
14375                         if (n_entries <= 0) {
14376                                 err = -EINVAL;
14377                                 goto out;
14378                         }
14379
14380                         func->srf_num_macs = n_entries;
14381                         func->srf_macs =
14382                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14383                                         GFP_KERNEL);
14384                         if (!func->srf_macs) {
14385                                 err = -ENOMEM;
14386                                 goto out;
14387                         }
14388
14389                         nla_for_each_nested(attr, mac_attr, rem)
14390                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14391                                        sizeof(*func->srf_macs));
14392                 }
14393         }
14394
14395         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14396                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14397                                         func, true);
14398                 if (err)
14399                         goto out;
14400         }
14401
14402         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14403                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14404                                         func, false);
14405                 if (err)
14406                         goto out;
14407         }
14408
14409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14410         if (!msg) {
14411                 err = -ENOMEM;
14412                 goto out;
14413         }
14414
14415         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14416                              NL80211_CMD_ADD_NAN_FUNCTION);
14417         /* This can't really happen - we just allocated 4KB */
14418         if (WARN_ON(!hdr)) {
14419                 err = -ENOMEM;
14420                 goto out;
14421         }
14422
14423         err = rdev_add_nan_func(rdev, wdev, func);
14424 out:
14425         if (err < 0) {
14426                 cfg80211_free_nan_func(func);
14427                 nlmsg_free(msg);
14428                 return err;
14429         }
14430
14431         /* propagate the instance id and cookie to userspace  */
14432         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14433                               NL80211_ATTR_PAD))
14434                 goto nla_put_failure;
14435
14436         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14437         if (!func_attr)
14438                 goto nla_put_failure;
14439
14440         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14441                        func->instance_id))
14442                 goto nla_put_failure;
14443
14444         nla_nest_end(msg, func_attr);
14445
14446         genlmsg_end(msg, hdr);
14447         return genlmsg_reply(msg, info);
14448
14449 nla_put_failure:
14450         nlmsg_free(msg);
14451         return -ENOBUFS;
14452 }
14453
14454 static int nl80211_nan_del_func(struct sk_buff *skb,
14455                                struct genl_info *info)
14456 {
14457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14458         struct wireless_dev *wdev = info->user_ptr[1];
14459         u64 cookie;
14460
14461         if (wdev->iftype != NL80211_IFTYPE_NAN)
14462                 return -EOPNOTSUPP;
14463
14464         if (!wdev_running(wdev))
14465                 return -ENOTCONN;
14466
14467         if (!info->attrs[NL80211_ATTR_COOKIE])
14468                 return -EINVAL;
14469
14470         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14471
14472         rdev_del_nan_func(rdev, wdev, cookie);
14473
14474         return 0;
14475 }
14476
14477 static int nl80211_nan_change_config(struct sk_buff *skb,
14478                                      struct genl_info *info)
14479 {
14480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14481         struct wireless_dev *wdev = info->user_ptr[1];
14482         struct cfg80211_nan_conf conf = {};
14483         u32 changed = 0;
14484
14485         if (wdev->iftype != NL80211_IFTYPE_NAN)
14486                 return -EOPNOTSUPP;
14487
14488         if (!wdev_running(wdev))
14489                 return -ENOTCONN;
14490
14491         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14492                 conf.master_pref =
14493                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14494                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14495                         return -EINVAL;
14496
14497                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14498         }
14499
14500         if (info->attrs[NL80211_ATTR_BANDS]) {
14501                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14502
14503                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14504                         return -EOPNOTSUPP;
14505
14506                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14507                         return -EINVAL;
14508
14509                 conf.bands = bands;
14510                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14511         }
14512
14513         if (!changed)
14514                 return -EINVAL;
14515
14516         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14517 }
14518
14519 void cfg80211_nan_match(struct wireless_dev *wdev,
14520                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14521 {
14522         struct wiphy *wiphy = wdev->wiphy;
14523         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14524         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14525         struct sk_buff *msg;
14526         void *hdr;
14527
14528         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14529                 return;
14530
14531         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14532         if (!msg)
14533                 return;
14534
14535         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14536         if (!hdr) {
14537                 nlmsg_free(msg);
14538                 return;
14539         }
14540
14541         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14542             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14543                                          wdev->netdev->ifindex)) ||
14544             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14545                               NL80211_ATTR_PAD))
14546                 goto nla_put_failure;
14547
14548         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14549                               NL80211_ATTR_PAD) ||
14550             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14551                 goto nla_put_failure;
14552
14553         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14554         if (!match_attr)
14555                 goto nla_put_failure;
14556
14557         local_func_attr = nla_nest_start_noflag(msg,
14558                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14559         if (!local_func_attr)
14560                 goto nla_put_failure;
14561
14562         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14563                 goto nla_put_failure;
14564
14565         nla_nest_end(msg, local_func_attr);
14566
14567         peer_func_attr = nla_nest_start_noflag(msg,
14568                                                NL80211_NAN_MATCH_FUNC_PEER);
14569         if (!peer_func_attr)
14570                 goto nla_put_failure;
14571
14572         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14573             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14574                 goto nla_put_failure;
14575
14576         if (match->info && match->info_len &&
14577             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14578                     match->info))
14579                 goto nla_put_failure;
14580
14581         nla_nest_end(msg, peer_func_attr);
14582         nla_nest_end(msg, match_attr);
14583         genlmsg_end(msg, hdr);
14584
14585         if (!wdev->owner_nlportid)
14586                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14587                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14588         else
14589                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14590                                 wdev->owner_nlportid);
14591
14592         return;
14593
14594 nla_put_failure:
14595         nlmsg_free(msg);
14596 }
14597 EXPORT_SYMBOL(cfg80211_nan_match);
14598
14599 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14600                                   u8 inst_id,
14601                                   enum nl80211_nan_func_term_reason reason,
14602                                   u64 cookie, gfp_t gfp)
14603 {
14604         struct wiphy *wiphy = wdev->wiphy;
14605         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14606         struct sk_buff *msg;
14607         struct nlattr *func_attr;
14608         void *hdr;
14609
14610         if (WARN_ON(!inst_id))
14611                 return;
14612
14613         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14614         if (!msg)
14615                 return;
14616
14617         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14618         if (!hdr) {
14619                 nlmsg_free(msg);
14620                 return;
14621         }
14622
14623         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14624             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14625                                          wdev->netdev->ifindex)) ||
14626             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14627                               NL80211_ATTR_PAD))
14628                 goto nla_put_failure;
14629
14630         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14631                               NL80211_ATTR_PAD))
14632                 goto nla_put_failure;
14633
14634         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14635         if (!func_attr)
14636                 goto nla_put_failure;
14637
14638         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14639             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14640                 goto nla_put_failure;
14641
14642         nla_nest_end(msg, func_attr);
14643         genlmsg_end(msg, hdr);
14644
14645         if (!wdev->owner_nlportid)
14646                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14647                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14648         else
14649                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14650                                 wdev->owner_nlportid);
14651
14652         return;
14653
14654 nla_put_failure:
14655         nlmsg_free(msg);
14656 }
14657 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14658
14659 static int nl80211_get_protocol_features(struct sk_buff *skb,
14660                                          struct genl_info *info)
14661 {
14662         void *hdr;
14663         struct sk_buff *msg;
14664
14665         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14666         if (!msg)
14667                 return -ENOMEM;
14668
14669         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14670                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14671         if (!hdr)
14672                 goto nla_put_failure;
14673
14674         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14675                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14676                 goto nla_put_failure;
14677
14678         genlmsg_end(msg, hdr);
14679         return genlmsg_reply(msg, info);
14680
14681  nla_put_failure:
14682         kfree_skb(msg);
14683         return -ENOBUFS;
14684 }
14685
14686 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14687 {
14688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14689         struct cfg80211_update_ft_ies_params ft_params;
14690         struct net_device *dev = info->user_ptr[1];
14691
14692         if (!rdev->ops->update_ft_ies)
14693                 return -EOPNOTSUPP;
14694
14695         if (!info->attrs[NL80211_ATTR_MDID] ||
14696             !info->attrs[NL80211_ATTR_IE])
14697                 return -EINVAL;
14698
14699         memset(&ft_params, 0, sizeof(ft_params));
14700         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14701         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14702         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14703
14704         return rdev_update_ft_ies(rdev, dev, &ft_params);
14705 }
14706
14707 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14708                                        struct genl_info *info)
14709 {
14710         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14711         struct wireless_dev *wdev = info->user_ptr[1];
14712         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14713         u16 duration;
14714         int ret;
14715
14716         if (!rdev->ops->crit_proto_start)
14717                 return -EOPNOTSUPP;
14718
14719         if (WARN_ON(!rdev->ops->crit_proto_stop))
14720                 return -EINVAL;
14721
14722         if (rdev->crit_proto_nlportid)
14723                 return -EBUSY;
14724
14725         /* determine protocol if provided */
14726         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14727                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14728
14729         if (proto >= NUM_NL80211_CRIT_PROTO)
14730                 return -EINVAL;
14731
14732         /* timeout must be provided */
14733         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14734                 return -EINVAL;
14735
14736         duration =
14737                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14738
14739         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14740         if (!ret)
14741                 rdev->crit_proto_nlportid = info->snd_portid;
14742
14743         return ret;
14744 }
14745
14746 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14747                                       struct genl_info *info)
14748 {
14749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14750         struct wireless_dev *wdev = info->user_ptr[1];
14751
14752         if (!rdev->ops->crit_proto_stop)
14753                 return -EOPNOTSUPP;
14754
14755         if (rdev->crit_proto_nlportid) {
14756                 rdev->crit_proto_nlportid = 0;
14757                 rdev_crit_proto_stop(rdev, wdev);
14758         }
14759         return 0;
14760 }
14761
14762 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14763                                        struct nlattr *attr,
14764                                        struct netlink_ext_ack *extack)
14765 {
14766         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14767                 if (attr->nla_type & NLA_F_NESTED) {
14768                         NL_SET_ERR_MSG_ATTR(extack, attr,
14769                                             "unexpected nested data");
14770                         return -EINVAL;
14771                 }
14772
14773                 return 0;
14774         }
14775
14776         if (!(attr->nla_type & NLA_F_NESTED)) {
14777                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14778                 return -EINVAL;
14779         }
14780
14781         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14782 }
14783
14784 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14785 {
14786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14787         struct wireless_dev *wdev =
14788                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14789                                            info->attrs);
14790         int i, err;
14791         u32 vid, subcmd;
14792
14793         if (!rdev->wiphy.vendor_commands)
14794                 return -EOPNOTSUPP;
14795
14796         if (IS_ERR(wdev)) {
14797                 err = PTR_ERR(wdev);
14798                 if (err != -EINVAL)
14799                         return err;
14800                 wdev = NULL;
14801         } else if (wdev->wiphy != &rdev->wiphy) {
14802                 return -EINVAL;
14803         }
14804
14805         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14806             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14807                 return -EINVAL;
14808
14809         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14810         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14811         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14812                 const struct wiphy_vendor_command *vcmd;
14813                 void *data = NULL;
14814                 int len = 0;
14815
14816                 vcmd = &rdev->wiphy.vendor_commands[i];
14817
14818                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14819                         continue;
14820
14821                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14822                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14823                         if (!wdev)
14824                                 return -EINVAL;
14825                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14826                             !wdev->netdev)
14827                                 return -EINVAL;
14828
14829                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14830                                 if (!wdev_running(wdev))
14831                                         return -ENETDOWN;
14832                         }
14833                 } else {
14834                         wdev = NULL;
14835                 }
14836
14837                 if (!vcmd->doit)
14838                         return -EOPNOTSUPP;
14839
14840                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14841                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14842                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14843
14844                         err = nl80211_vendor_check_policy(vcmd,
14845                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14846                                         info->extack);
14847                         if (err)
14848                                 return err;
14849                 }
14850
14851                 rdev->cur_cmd_info = info;
14852                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14853                 rdev->cur_cmd_info = NULL;
14854                 return err;
14855         }
14856
14857         return -EOPNOTSUPP;
14858 }
14859
14860 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14861                                        struct netlink_callback *cb,
14862                                        struct cfg80211_registered_device **rdev,
14863                                        struct wireless_dev **wdev)
14864 {
14865         struct nlattr **attrbuf;
14866         u32 vid, subcmd;
14867         unsigned int i;
14868         int vcmd_idx = -1;
14869         int err;
14870         void *data = NULL;
14871         unsigned int data_len = 0;
14872
14873         if (cb->args[0]) {
14874                 /* subtract the 1 again here */
14875                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
14876                 struct wireless_dev *tmp;
14877
14878                 if (!wiphy)
14879                         return -ENODEV;
14880                 *rdev = wiphy_to_rdev(wiphy);
14881                 *wdev = NULL;
14882
14883                 if (cb->args[1]) {
14884                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
14885                                 if (tmp->identifier == cb->args[1] - 1) {
14886                                         *wdev = tmp;
14887                                         break;
14888                                 }
14889                         }
14890                 }
14891
14892                 /* keep rtnl locked in successful case */
14893                 return 0;
14894         }
14895
14896         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
14897         if (!attrbuf)
14898                 return -ENOMEM;
14899
14900         err = nlmsg_parse_deprecated(cb->nlh,
14901                                      GENL_HDRLEN + nl80211_fam.hdrsize,
14902                                      attrbuf, nl80211_fam.maxattr,
14903                                      nl80211_policy, NULL);
14904         if (err)
14905                 goto out;
14906
14907         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
14908             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
14909                 err = -EINVAL;
14910                 goto out;
14911         }
14912
14913         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
14914         if (IS_ERR(*wdev))
14915                 *wdev = NULL;
14916
14917         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
14918         if (IS_ERR(*rdev)) {
14919                 err = PTR_ERR(*rdev);
14920                 goto out;
14921         }
14922
14923         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
14924         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
14925
14926         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
14927                 const struct wiphy_vendor_command *vcmd;
14928
14929                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
14930
14931                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14932                         continue;
14933
14934                 if (!vcmd->dumpit) {
14935                         err = -EOPNOTSUPP;
14936                         goto out;
14937                 }
14938
14939                 vcmd_idx = i;
14940                 break;
14941         }
14942
14943         if (vcmd_idx < 0) {
14944                 err = -EOPNOTSUPP;
14945                 goto out;
14946         }
14947
14948         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
14949                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14950                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14951
14952                 err = nl80211_vendor_check_policy(
14953                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
14954                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
14955                                 cb->extack);
14956                 if (err)
14957                         goto out;
14958         }
14959
14960         /* 0 is the first index - add 1 to parse only once */
14961         cb->args[0] = (*rdev)->wiphy_idx + 1;
14962         /* add 1 to know if it was NULL */
14963         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
14964         cb->args[2] = vcmd_idx;
14965         cb->args[3] = (unsigned long)data;
14966         cb->args[4] = data_len;
14967
14968         /* keep rtnl locked in successful case */
14969         err = 0;
14970 out:
14971         kfree(attrbuf);
14972         return err;
14973 }
14974
14975 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
14976                                    struct netlink_callback *cb)
14977 {
14978         struct cfg80211_registered_device *rdev;
14979         struct wireless_dev *wdev;
14980         unsigned int vcmd_idx;
14981         const struct wiphy_vendor_command *vcmd;
14982         void *data;
14983         int data_len;
14984         int err;
14985         struct nlattr *vendor_data;
14986
14987         rtnl_lock();
14988         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
14989         if (err)
14990                 goto out;
14991
14992         vcmd_idx = cb->args[2];
14993         data = (void *)cb->args[3];
14994         data_len = cb->args[4];
14995         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14996
14997         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14998                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14999                 if (!wdev) {
15000                         err = -EINVAL;
15001                         goto out;
15002                 }
15003                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15004                     !wdev->netdev) {
15005                         err = -EINVAL;
15006                         goto out;
15007                 }
15008
15009                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15010                         if (!wdev_running(wdev)) {
15011                                 err = -ENETDOWN;
15012                                 goto out;
15013                         }
15014                 }
15015         }
15016
15017         while (1) {
15018                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15019                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15020                                            NL80211_CMD_VENDOR);
15021                 if (!hdr)
15022                         break;
15023
15024                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15025                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15026                                                wdev_id(wdev),
15027                                                NL80211_ATTR_PAD))) {
15028                         genlmsg_cancel(skb, hdr);
15029                         break;
15030                 }
15031
15032                 vendor_data = nla_nest_start_noflag(skb,
15033                                                     NL80211_ATTR_VENDOR_DATA);
15034                 if (!vendor_data) {
15035                         genlmsg_cancel(skb, hdr);
15036                         break;
15037                 }
15038
15039                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15040                                    (unsigned long *)&cb->args[5]);
15041                 nla_nest_end(skb, vendor_data);
15042
15043                 if (err == -ENOBUFS || err == -ENOENT) {
15044                         genlmsg_cancel(skb, hdr);
15045                         break;
15046                 } else if (err <= 0) {
15047                         genlmsg_cancel(skb, hdr);
15048                         goto out;
15049                 }
15050
15051                 genlmsg_end(skb, hdr);
15052         }
15053
15054         err = skb->len;
15055  out:
15056         rtnl_unlock();
15057         return err;
15058 }
15059
15060 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15061                                            enum nl80211_commands cmd,
15062                                            enum nl80211_attrs attr,
15063                                            int approxlen)
15064 {
15065         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15066
15067         if (WARN_ON(!rdev->cur_cmd_info))
15068                 return NULL;
15069
15070         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15071                                            rdev->cur_cmd_info->snd_portid,
15072                                            rdev->cur_cmd_info->snd_seq,
15073                                            cmd, attr, NULL, GFP_KERNEL);
15074 }
15075 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15076
15077 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15078 {
15079         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15080         void *hdr = ((void **)skb->cb)[1];
15081         struct nlattr *data = ((void **)skb->cb)[2];
15082
15083         /* clear CB data for netlink core to own from now on */
15084         memset(skb->cb, 0, sizeof(skb->cb));
15085
15086         if (WARN_ON(!rdev->cur_cmd_info)) {
15087                 kfree_skb(skb);
15088                 return -EINVAL;
15089         }
15090
15091         nla_nest_end(skb, data);
15092         genlmsg_end(skb, hdr);
15093         return genlmsg_reply(skb, rdev->cur_cmd_info);
15094 }
15095 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15096
15097 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15098 {
15099         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15100
15101         if (WARN_ON(!rdev->cur_cmd_info))
15102                 return 0;
15103
15104         return rdev->cur_cmd_info->snd_portid;
15105 }
15106 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15107
15108 static int nl80211_set_qos_map(struct sk_buff *skb,
15109                                struct genl_info *info)
15110 {
15111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15112         struct cfg80211_qos_map *qos_map = NULL;
15113         struct net_device *dev = info->user_ptr[1];
15114         u8 *pos, len, num_des, des_len, des;
15115         int ret;
15116
15117         if (!rdev->ops->set_qos_map)
15118                 return -EOPNOTSUPP;
15119
15120         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15121                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15122                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15123
15124                 if (len % 2)
15125                         return -EINVAL;
15126
15127                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15128                 if (!qos_map)
15129                         return -ENOMEM;
15130
15131                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15132                 if (num_des) {
15133                         des_len = num_des *
15134                                 sizeof(struct cfg80211_dscp_exception);
15135                         memcpy(qos_map->dscp_exception, pos, des_len);
15136                         qos_map->num_des = num_des;
15137                         for (des = 0; des < num_des; des++) {
15138                                 if (qos_map->dscp_exception[des].up > 7) {
15139                                         kfree(qos_map);
15140                                         return -EINVAL;
15141                                 }
15142                         }
15143                         pos += des_len;
15144                 }
15145                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15146         }
15147
15148         wdev_lock(dev->ieee80211_ptr);
15149         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15150         if (!ret)
15151                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15152         wdev_unlock(dev->ieee80211_ptr);
15153
15154         kfree(qos_map);
15155         return ret;
15156 }
15157
15158 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15159 {
15160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15161         struct net_device *dev = info->user_ptr[1];
15162         struct wireless_dev *wdev = dev->ieee80211_ptr;
15163         const u8 *peer;
15164         u8 tsid, up;
15165         u16 admitted_time = 0;
15166         int err;
15167
15168         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15169                 return -EOPNOTSUPP;
15170
15171         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15172             !info->attrs[NL80211_ATTR_USER_PRIO])
15173                 return -EINVAL;
15174
15175         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15176         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15177
15178         /* WMM uses TIDs 0-7 even for TSPEC */
15179         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15180                 /* TODO: handle 802.11 TSPEC/admission control
15181                  * need more attributes for that (e.g. BA session requirement);
15182                  * change the WMM adminssion test above to allow both then
15183                  */
15184                 return -EINVAL;
15185         }
15186
15187         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15188
15189         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15190                 admitted_time =
15191                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15192                 if (!admitted_time)
15193                         return -EINVAL;
15194         }
15195
15196         wdev_lock(wdev);
15197         switch (wdev->iftype) {
15198         case NL80211_IFTYPE_STATION:
15199         case NL80211_IFTYPE_P2P_CLIENT:
15200                 if (wdev->connected)
15201                         break;
15202                 err = -ENOTCONN;
15203                 goto out;
15204         default:
15205                 err = -EOPNOTSUPP;
15206                 goto out;
15207         }
15208
15209         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15210
15211  out:
15212         wdev_unlock(wdev);
15213         return err;
15214 }
15215
15216 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15217 {
15218         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15219         struct net_device *dev = info->user_ptr[1];
15220         struct wireless_dev *wdev = dev->ieee80211_ptr;
15221         const u8 *peer;
15222         u8 tsid;
15223         int err;
15224
15225         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15226                 return -EINVAL;
15227
15228         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15229         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15230
15231         wdev_lock(wdev);
15232         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15233         wdev_unlock(wdev);
15234
15235         return err;
15236 }
15237
15238 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15239                                        struct genl_info *info)
15240 {
15241         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15242         struct net_device *dev = info->user_ptr[1];
15243         struct wireless_dev *wdev = dev->ieee80211_ptr;
15244         struct cfg80211_chan_def chandef = {};
15245         const u8 *addr;
15246         u8 oper_class;
15247         int err;
15248
15249         if (!rdev->ops->tdls_channel_switch ||
15250             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15251                 return -EOPNOTSUPP;
15252
15253         switch (dev->ieee80211_ptr->iftype) {
15254         case NL80211_IFTYPE_STATION:
15255         case NL80211_IFTYPE_P2P_CLIENT:
15256                 break;
15257         default:
15258                 return -EOPNOTSUPP;
15259         }
15260
15261         if (!info->attrs[NL80211_ATTR_MAC] ||
15262             !info->attrs[NL80211_ATTR_OPER_CLASS])
15263                 return -EINVAL;
15264
15265         err = nl80211_parse_chandef(rdev, info, &chandef);
15266         if (err)
15267                 return err;
15268
15269         /*
15270          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15271          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15272          * specification is not defined for them.
15273          */
15274         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15275             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15276             chandef.width != NL80211_CHAN_WIDTH_20)
15277                 return -EINVAL;
15278
15279         /* we will be active on the TDLS link */
15280         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15281                                            wdev->iftype))
15282                 return -EINVAL;
15283
15284         /* don't allow switching to DFS channels */
15285         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15286                 return -EINVAL;
15287
15288         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15289         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15290
15291         wdev_lock(wdev);
15292         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15293         wdev_unlock(wdev);
15294
15295         return err;
15296 }
15297
15298 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15299                                               struct genl_info *info)
15300 {
15301         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15302         struct net_device *dev = info->user_ptr[1];
15303         struct wireless_dev *wdev = dev->ieee80211_ptr;
15304         const u8 *addr;
15305
15306         if (!rdev->ops->tdls_channel_switch ||
15307             !rdev->ops->tdls_cancel_channel_switch ||
15308             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15309                 return -EOPNOTSUPP;
15310
15311         switch (dev->ieee80211_ptr->iftype) {
15312         case NL80211_IFTYPE_STATION:
15313         case NL80211_IFTYPE_P2P_CLIENT:
15314                 break;
15315         default:
15316                 return -EOPNOTSUPP;
15317         }
15318
15319         if (!info->attrs[NL80211_ATTR_MAC])
15320                 return -EINVAL;
15321
15322         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15323
15324         wdev_lock(wdev);
15325         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15326         wdev_unlock(wdev);
15327
15328         return 0;
15329 }
15330
15331 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15332                                             struct genl_info *info)
15333 {
15334         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15335         struct net_device *dev = info->user_ptr[1];
15336         struct wireless_dev *wdev = dev->ieee80211_ptr;
15337         const struct nlattr *nla;
15338         bool enabled;
15339
15340         if (!rdev->ops->set_multicast_to_unicast)
15341                 return -EOPNOTSUPP;
15342
15343         if (wdev->iftype != NL80211_IFTYPE_AP &&
15344             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15345                 return -EOPNOTSUPP;
15346
15347         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15348         enabled = nla_get_flag(nla);
15349
15350         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15351 }
15352
15353 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15354 {
15355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15356         struct net_device *dev = info->user_ptr[1];
15357         struct wireless_dev *wdev = dev->ieee80211_ptr;
15358         struct cfg80211_pmk_conf pmk_conf = {};
15359         int ret;
15360
15361         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15362             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15363                 return -EOPNOTSUPP;
15364
15365         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15366                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15367                 return -EOPNOTSUPP;
15368
15369         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15370                 return -EINVAL;
15371
15372         wdev_lock(wdev);
15373         if (!wdev->connected) {
15374                 ret = -ENOTCONN;
15375                 goto out;
15376         }
15377
15378         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15379         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15380                 ret = -EINVAL;
15381                 goto out;
15382         }
15383
15384         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15385         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15386         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15387             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15388                 ret = -EINVAL;
15389                 goto out;
15390         }
15391
15392         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15393                 pmk_conf.pmk_r0_name =
15394                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15395
15396         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15397 out:
15398         wdev_unlock(wdev);
15399         return ret;
15400 }
15401
15402 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15403 {
15404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15405         struct net_device *dev = info->user_ptr[1];
15406         struct wireless_dev *wdev = dev->ieee80211_ptr;
15407         const u8 *aa;
15408         int ret;
15409
15410         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15411             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15412                 return -EOPNOTSUPP;
15413
15414         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15415                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15416                 return -EOPNOTSUPP;
15417
15418         if (!info->attrs[NL80211_ATTR_MAC])
15419                 return -EINVAL;
15420
15421         wdev_lock(wdev);
15422         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15423         ret = rdev_del_pmk(rdev, dev, aa);
15424         wdev_unlock(wdev);
15425
15426         return ret;
15427 }
15428
15429 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15430 {
15431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15432         struct net_device *dev = info->user_ptr[1];
15433         struct cfg80211_external_auth_params params;
15434
15435         if (!rdev->ops->external_auth)
15436                 return -EOPNOTSUPP;
15437
15438         if (!info->attrs[NL80211_ATTR_SSID] &&
15439             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15440             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15441                 return -EINVAL;
15442
15443         if (!info->attrs[NL80211_ATTR_BSSID])
15444                 return -EINVAL;
15445
15446         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15447                 return -EINVAL;
15448
15449         memset(&params, 0, sizeof(params));
15450
15451         if (info->attrs[NL80211_ATTR_SSID]) {
15452                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15453                 if (params.ssid.ssid_len == 0)
15454                         return -EINVAL;
15455                 memcpy(params.ssid.ssid,
15456                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15457                        params.ssid.ssid_len);
15458         }
15459
15460         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15461                ETH_ALEN);
15462
15463         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15464
15465         if (info->attrs[NL80211_ATTR_PMKID])
15466                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15467
15468         return rdev_external_auth(rdev, dev, &params);
15469 }
15470
15471 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15472 {
15473         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15475         struct net_device *dev = info->user_ptr[1];
15476         struct wireless_dev *wdev = dev->ieee80211_ptr;
15477         const u8 *buf;
15478         size_t len;
15479         u8 *dest;
15480         u16 proto;
15481         bool noencrypt;
15482         u64 cookie = 0;
15483         int link_id;
15484         int err;
15485
15486         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15487                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15488                 return -EOPNOTSUPP;
15489
15490         if (!rdev->ops->tx_control_port)
15491                 return -EOPNOTSUPP;
15492
15493         if (!info->attrs[NL80211_ATTR_FRAME] ||
15494             !info->attrs[NL80211_ATTR_MAC] ||
15495             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15496                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15497                 return -EINVAL;
15498         }
15499
15500         wdev_lock(wdev);
15501
15502         switch (wdev->iftype) {
15503         case NL80211_IFTYPE_AP:
15504         case NL80211_IFTYPE_P2P_GO:
15505         case NL80211_IFTYPE_MESH_POINT:
15506                 break;
15507         case NL80211_IFTYPE_ADHOC:
15508                 if (wdev->u.ibss.current_bss)
15509                         break;
15510                 err = -ENOTCONN;
15511                 goto out;
15512         case NL80211_IFTYPE_STATION:
15513         case NL80211_IFTYPE_P2P_CLIENT:
15514                 if (wdev->connected)
15515                         break;
15516                 err = -ENOTCONN;
15517                 goto out;
15518         default:
15519                 err = -EOPNOTSUPP;
15520                 goto out;
15521         }
15522
15523         wdev_unlock(wdev);
15524
15525         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15526         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15527         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15528         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15529         noencrypt =
15530                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15531
15532         link_id = nl80211_link_id_or_invalid(info->attrs);
15533
15534         err = rdev_tx_control_port(rdev, dev, buf, len,
15535                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15536                                    dont_wait_for_ack ? NULL : &cookie);
15537         if (!err && !dont_wait_for_ack)
15538                 nl_set_extack_cookie_u64(info->extack, cookie);
15539         return err;
15540  out:
15541         wdev_unlock(wdev);
15542         return err;
15543 }
15544
15545 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15546                                            struct genl_info *info)
15547 {
15548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15549         struct net_device *dev = info->user_ptr[1];
15550         struct wireless_dev *wdev = dev->ieee80211_ptr;
15551         struct cfg80211_ftm_responder_stats ftm_stats = {};
15552         unsigned int link_id = nl80211_link_id(info->attrs);
15553         struct sk_buff *msg;
15554         void *hdr;
15555         struct nlattr *ftm_stats_attr;
15556         int err;
15557
15558         if (wdev->iftype != NL80211_IFTYPE_AP ||
15559             !wdev->links[link_id].ap.beacon_interval)
15560                 return -EOPNOTSUPP;
15561
15562         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15563         if (err)
15564                 return err;
15565
15566         if (!ftm_stats.filled)
15567                 return -ENODATA;
15568
15569         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15570         if (!msg)
15571                 return -ENOMEM;
15572
15573         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15574                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15575         if (!hdr)
15576                 goto nla_put_failure;
15577
15578         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15579                 goto nla_put_failure;
15580
15581         ftm_stats_attr = nla_nest_start_noflag(msg,
15582                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15583         if (!ftm_stats_attr)
15584                 goto nla_put_failure;
15585
15586 #define SET_FTM(field, name, type)                                       \
15587         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15588             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15589                              ftm_stats.field))                           \
15590                 goto nla_put_failure; } while (0)
15591 #define SET_FTM_U64(field, name)                                         \
15592         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15593             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15594                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15595                 goto nla_put_failure; } while (0)
15596
15597         SET_FTM(success_num, SUCCESS_NUM, u32);
15598         SET_FTM(partial_num, PARTIAL_NUM, u32);
15599         SET_FTM(failed_num, FAILED_NUM, u32);
15600         SET_FTM(asap_num, ASAP_NUM, u32);
15601         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15602         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15603         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15604         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15605         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15606 #undef SET_FTM
15607
15608         nla_nest_end(msg, ftm_stats_attr);
15609
15610         genlmsg_end(msg, hdr);
15611         return genlmsg_reply(msg, info);
15612
15613 nla_put_failure:
15614         nlmsg_free(msg);
15615         return -ENOBUFS;
15616 }
15617
15618 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15619 {
15620         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15621         struct cfg80211_update_owe_info owe_info;
15622         struct net_device *dev = info->user_ptr[1];
15623
15624         if (!rdev->ops->update_owe_info)
15625                 return -EOPNOTSUPP;
15626
15627         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15628             !info->attrs[NL80211_ATTR_MAC])
15629                 return -EINVAL;
15630
15631         memset(&owe_info, 0, sizeof(owe_info));
15632         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15633         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15634
15635         if (info->attrs[NL80211_ATTR_IE]) {
15636                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15637                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15638         }
15639
15640         return rdev_update_owe_info(rdev, dev, &owe_info);
15641 }
15642
15643 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15644 {
15645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15646         struct net_device *dev = info->user_ptr[1];
15647         struct wireless_dev *wdev = dev->ieee80211_ptr;
15648         struct station_info sinfo = {};
15649         const u8 *buf;
15650         size_t len;
15651         u8 *dest;
15652         int err;
15653
15654         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15655                 return -EOPNOTSUPP;
15656
15657         if (!info->attrs[NL80211_ATTR_MAC] ||
15658             !info->attrs[NL80211_ATTR_FRAME]) {
15659                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15660                 return -EINVAL;
15661         }
15662
15663         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15664                 return -EOPNOTSUPP;
15665
15666         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15667         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15668         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15669
15670         if (len < sizeof(struct ethhdr))
15671                 return -EINVAL;
15672
15673         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15674             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15675                 return -EINVAL;
15676
15677         err = rdev_get_station(rdev, dev, dest, &sinfo);
15678         if (err)
15679                 return err;
15680
15681         cfg80211_sinfo_release_content(&sinfo);
15682
15683         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15684 }
15685
15686 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15687                           struct nlattr *attrs[], struct net_device *dev,
15688                           struct cfg80211_tid_cfg *tid_conf,
15689                           struct genl_info *info, const u8 *peer,
15690                           unsigned int link_id)
15691 {
15692         struct netlink_ext_ack *extack = info->extack;
15693         u64 mask;
15694         int err;
15695
15696         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15697                 return -EINVAL;
15698
15699         tid_conf->config_override =
15700                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15701         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15702
15703         if (tid_conf->config_override) {
15704                 if (rdev->ops->reset_tid_config) {
15705                         err = rdev_reset_tid_config(rdev, dev, peer,
15706                                                     tid_conf->tids);
15707                         if (err)
15708                                 return err;
15709                 } else {
15710                         return -EINVAL;
15711                 }
15712         }
15713
15714         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15715                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15716                 tid_conf->noack =
15717                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15718         }
15719
15720         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15721                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15722                 tid_conf->retry_short =
15723                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15724
15725                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15726                         return -EINVAL;
15727         }
15728
15729         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15730                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15731                 tid_conf->retry_long =
15732                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15733
15734                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15735                         return -EINVAL;
15736         }
15737
15738         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15739                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15740                 tid_conf->ampdu =
15741                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15742         }
15743
15744         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15745                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15746                 tid_conf->rtscts =
15747                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15748         }
15749
15750         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15751                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15752                 tid_conf->amsdu =
15753                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15754         }
15755
15756         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15757                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15758
15759                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15760
15761                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15762                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15763                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15764                                                     &tid_conf->txrate_mask, dev,
15765                                                     true, link_id);
15766                         if (err)
15767                                 return err;
15768
15769                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15770                 }
15771                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15772         }
15773
15774         if (peer)
15775                 mask = rdev->wiphy.tid_config_support.peer;
15776         else
15777                 mask = rdev->wiphy.tid_config_support.vif;
15778
15779         if (tid_conf->mask & ~mask) {
15780                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15781                 return -ENOTSUPP;
15782         }
15783
15784         return 0;
15785 }
15786
15787 static int nl80211_set_tid_config(struct sk_buff *skb,
15788                                   struct genl_info *info)
15789 {
15790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15791         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15792         unsigned int link_id = nl80211_link_id(info->attrs);
15793         struct net_device *dev = info->user_ptr[1];
15794         struct cfg80211_tid_config *tid_config;
15795         struct nlattr *tid;
15796         int conf_idx = 0, rem_conf;
15797         int ret = -EINVAL;
15798         u32 num_conf = 0;
15799
15800         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15801                 return -EINVAL;
15802
15803         if (!rdev->ops->set_tid_config)
15804                 return -EOPNOTSUPP;
15805
15806         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15807                             rem_conf)
15808                 num_conf++;
15809
15810         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15811                              GFP_KERNEL);
15812         if (!tid_config)
15813                 return -ENOMEM;
15814
15815         tid_config->n_tid_conf = num_conf;
15816
15817         if (info->attrs[NL80211_ATTR_MAC])
15818                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15819
15820         wdev_lock(dev->ieee80211_ptr);
15821
15822         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15823                             rem_conf) {
15824                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15825                                        tid, NULL, NULL);
15826
15827                 if (ret)
15828                         goto bad_tid_conf;
15829
15830                 ret = parse_tid_conf(rdev, attrs, dev,
15831                                      &tid_config->tid_conf[conf_idx],
15832                                      info, tid_config->peer, link_id);
15833                 if (ret)
15834                         goto bad_tid_conf;
15835
15836                 conf_idx++;
15837         }
15838
15839         ret = rdev_set_tid_config(rdev, dev, tid_config);
15840
15841 bad_tid_conf:
15842         kfree(tid_config);
15843         wdev_unlock(dev->ieee80211_ptr);
15844         return ret;
15845 }
15846
15847 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15848 {
15849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15850         struct cfg80211_color_change_settings params = {};
15851         struct net_device *dev = info->user_ptr[1];
15852         struct wireless_dev *wdev = dev->ieee80211_ptr;
15853         struct nlattr **tb;
15854         u16 offset;
15855         int err;
15856
15857         if (!rdev->ops->color_change)
15858                 return -EOPNOTSUPP;
15859
15860         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15861                                      NL80211_EXT_FEATURE_BSS_COLOR))
15862                 return -EOPNOTSUPP;
15863
15864         if (wdev->iftype != NL80211_IFTYPE_AP)
15865                 return -EOPNOTSUPP;
15866
15867         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15868             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15869             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15870                 return -EINVAL;
15871
15872         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15873         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15874
15875         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next);
15876         if (err)
15877                 return err;
15878
15879         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15880         if (!tb)
15881                 return -ENOMEM;
15882
15883         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15884                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15885                                nl80211_policy, info->extack);
15886         if (err)
15887                 goto out;
15888
15889         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change);
15890         if (err)
15891                 goto out;
15892
15893         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15894                 err = -EINVAL;
15895                 goto out;
15896         }
15897
15898         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15899                 err = -EINVAL;
15900                 goto out;
15901         }
15902
15903         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15904         if (offset >= params.beacon_color_change.tail_len) {
15905                 err = -EINVAL;
15906                 goto out;
15907         }
15908
15909         if (params.beacon_color_change.tail[offset] != params.count) {
15910                 err = -EINVAL;
15911                 goto out;
15912         }
15913
15914         params.counter_offset_beacon = offset;
15915
15916         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
15917                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
15918                     sizeof(u16)) {
15919                         err = -EINVAL;
15920                         goto out;
15921                 }
15922
15923                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
15924                 if (offset >= params.beacon_color_change.probe_resp_len) {
15925                         err = -EINVAL;
15926                         goto out;
15927                 }
15928
15929                 if (params.beacon_color_change.probe_resp[offset] !=
15930                     params.count) {
15931                         err = -EINVAL;
15932                         goto out;
15933                 }
15934
15935                 params.counter_offset_presp = offset;
15936         }
15937
15938         wdev_lock(wdev);
15939         err = rdev_color_change(rdev, dev, &params);
15940         wdev_unlock(wdev);
15941
15942 out:
15943         kfree(params.beacon_next.mbssid_ies);
15944         kfree(params.beacon_color_change.mbssid_ies);
15945         kfree(tb);
15946         return err;
15947 }
15948
15949 static int nl80211_set_fils_aad(struct sk_buff *skb,
15950                                 struct genl_info *info)
15951 {
15952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15953         struct net_device *dev = info->user_ptr[1];
15954         struct cfg80211_fils_aad fils_aad = {};
15955         u8 *nonces;
15956
15957         if (!info->attrs[NL80211_ATTR_MAC] ||
15958             !info->attrs[NL80211_ATTR_FILS_KEK] ||
15959             !info->attrs[NL80211_ATTR_FILS_NONCES])
15960                 return -EINVAL;
15961
15962         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15963         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
15964         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
15965         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
15966         fils_aad.snonce = nonces;
15967         fils_aad.anonce = nonces + FILS_NONCE_LEN;
15968
15969         return rdev_set_fils_aad(rdev, dev, &fils_aad);
15970 }
15971
15972 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
15973 {
15974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15975         unsigned int link_id = nl80211_link_id(info->attrs);
15976         struct net_device *dev = info->user_ptr[1];
15977         struct wireless_dev *wdev = dev->ieee80211_ptr;
15978         int ret;
15979
15980         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
15981                 return -EINVAL;
15982
15983         switch (wdev->iftype) {
15984         case NL80211_IFTYPE_AP:
15985                 break;
15986         default:
15987                 return -EINVAL;
15988         }
15989
15990         if (!info->attrs[NL80211_ATTR_MAC] ||
15991             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
15992                 return -EINVAL;
15993
15994         wdev_lock(wdev);
15995         wdev->valid_links |= BIT(link_id);
15996         ether_addr_copy(wdev->links[link_id].addr,
15997                         nla_data(info->attrs[NL80211_ATTR_MAC]));
15998
15999         ret = rdev_add_intf_link(rdev, wdev, link_id);
16000         if (ret) {
16001                 wdev->valid_links &= ~BIT(link_id);
16002                 eth_zero_addr(wdev->links[link_id].addr);
16003         }
16004         wdev_unlock(wdev);
16005
16006         return ret;
16007 }
16008
16009 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16010 {
16011         unsigned int link_id = nl80211_link_id(info->attrs);
16012         struct net_device *dev = info->user_ptr[1];
16013         struct wireless_dev *wdev = dev->ieee80211_ptr;
16014
16015         /* cannot remove if there's no link */
16016         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16017                 return -EINVAL;
16018
16019         switch (wdev->iftype) {
16020         case NL80211_IFTYPE_AP:
16021                 break;
16022         default:
16023                 return -EINVAL;
16024         }
16025
16026         wdev_lock(wdev);
16027         cfg80211_remove_link(wdev, link_id);
16028         wdev_unlock(wdev);
16029
16030         return 0;
16031 }
16032
16033 static int
16034 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16035                              bool add)
16036 {
16037         struct link_station_parameters params = {};
16038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16039         struct net_device *dev = info->user_ptr[1];
16040         int err;
16041
16042         if ((add && !rdev->ops->add_link_station) ||
16043             (!add && !rdev->ops->mod_link_station))
16044                 return -EOPNOTSUPP;
16045
16046         if (add && !info->attrs[NL80211_ATTR_MAC])
16047                 return -EINVAL;
16048
16049         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16050                 return -EINVAL;
16051
16052         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16053                 return -EINVAL;
16054
16055         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16056
16057         if (info->attrs[NL80211_ATTR_MAC]) {
16058                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16059                 if (!is_valid_ether_addr(params.link_mac))
16060                         return -EINVAL;
16061         }
16062
16063         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16064                 return -EINVAL;
16065
16066         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16067
16068         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16069                 params.supported_rates =
16070                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16071                 params.supported_rates_len =
16072                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16073         }
16074
16075         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16076                 params.ht_capa =
16077                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16078
16079         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16080                 params.vht_capa =
16081                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16082
16083         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16084                 params.he_capa =
16085                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16086                 params.he_capa_len =
16087                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16088
16089                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16090                         params.eht_capa =
16091                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16092                         params.eht_capa_len =
16093                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16094
16095                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16096                                                         (const u8 *)params.eht_capa,
16097                                                         params.eht_capa_len,
16098                                                         false))
16099                                 return -EINVAL;
16100                 }
16101         }
16102
16103         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16104                 params.he_6ghz_capa =
16105                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16106
16107         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16108                 params.opmode_notif_used = true;
16109                 params.opmode_notif =
16110                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16111         }
16112
16113         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16114                                                 &params.txpwr_set);
16115         if (err)
16116                 return err;
16117
16118         wdev_lock(dev->ieee80211_ptr);
16119         if (add)
16120                 err = rdev_add_link_station(rdev, dev, &params);
16121         else
16122                 err = rdev_mod_link_station(rdev, dev, &params);
16123         wdev_unlock(dev->ieee80211_ptr);
16124
16125         return err;
16126 }
16127
16128 static int
16129 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16130 {
16131         return nl80211_add_mod_link_station(skb, info, true);
16132 }
16133
16134 static int
16135 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16136 {
16137         return nl80211_add_mod_link_station(skb, info, false);
16138 }
16139
16140 static int
16141 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16142 {
16143         struct link_station_del_parameters params = {};
16144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16145         struct net_device *dev = info->user_ptr[1];
16146         int ret;
16147
16148         if (!rdev->ops->del_link_station)
16149                 return -EOPNOTSUPP;
16150
16151         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16152             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16153                 return -EINVAL;
16154
16155         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16156         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16157
16158         wdev_lock(dev->ieee80211_ptr);
16159         ret = rdev_del_link_station(rdev, dev, &params);
16160         wdev_unlock(dev->ieee80211_ptr);
16161
16162         return ret;
16163 }
16164
16165 #define NL80211_FLAG_NEED_WIPHY         0x01
16166 #define NL80211_FLAG_NEED_NETDEV        0x02
16167 #define NL80211_FLAG_NEED_RTNL          0x04
16168 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16169 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16170                                          NL80211_FLAG_CHECK_NETDEV_UP)
16171 #define NL80211_FLAG_NEED_WDEV          0x10
16172 /* If a netdev is associated, it must be UP, P2P must be started */
16173 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16174                                          NL80211_FLAG_CHECK_NETDEV_UP)
16175 #define NL80211_FLAG_CLEAR_SKB          0x20
16176 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16177 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16178 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16179
16180 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16181         SELECTOR(__sel, NONE, 0) /* must be first */    \
16182         SELECTOR(__sel, WIPHY,                          \
16183                  NL80211_FLAG_NEED_WIPHY)               \
16184         SELECTOR(__sel, WDEV,                           \
16185                  NL80211_FLAG_NEED_WDEV)                \
16186         SELECTOR(__sel, NETDEV,                         \
16187                  NL80211_FLAG_NEED_NETDEV)              \
16188         SELECTOR(__sel, NETDEV_LINK,                    \
16189                  NL80211_FLAG_NEED_NETDEV |             \
16190                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16191         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16192                  NL80211_FLAG_NEED_NETDEV |             \
16193                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16194         SELECTOR(__sel, WIPHY_RTNL,                     \
16195                  NL80211_FLAG_NEED_WIPHY |              \
16196                  NL80211_FLAG_NEED_RTNL)                \
16197         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16198                  NL80211_FLAG_NEED_WIPHY |              \
16199                  NL80211_FLAG_NEED_RTNL |               \
16200                  NL80211_FLAG_NO_WIPHY_MTX)             \
16201         SELECTOR(__sel, WDEV_RTNL,                      \
16202                  NL80211_FLAG_NEED_WDEV |               \
16203                  NL80211_FLAG_NEED_RTNL)                \
16204         SELECTOR(__sel, NETDEV_RTNL,                    \
16205                  NL80211_FLAG_NEED_NETDEV |             \
16206                  NL80211_FLAG_NEED_RTNL)                \
16207         SELECTOR(__sel, NETDEV_UP,                      \
16208                  NL80211_FLAG_NEED_NETDEV_UP)           \
16209         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16210                  NL80211_FLAG_NEED_NETDEV_UP |          \
16211                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16212         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16213                  NL80211_FLAG_NEED_NETDEV_UP |          \
16214                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16215         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16216                  NL80211_FLAG_NEED_NETDEV_UP |          \
16217                  NL80211_FLAG_CLEAR_SKB |               \
16218                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16219         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16220                  NL80211_FLAG_NEED_NETDEV_UP |          \
16221                  NL80211_FLAG_NO_WIPHY_MTX)             \
16222         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16223                  NL80211_FLAG_NEED_NETDEV_UP |          \
16224                  NL80211_FLAG_NO_WIPHY_MTX |            \
16225                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16226         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16227                  NL80211_FLAG_NEED_NETDEV_UP |          \
16228                  NL80211_FLAG_CLEAR_SKB)                \
16229         SELECTOR(__sel, WDEV_UP,                        \
16230                  NL80211_FLAG_NEED_WDEV_UP)             \
16231         SELECTOR(__sel, WDEV_UP_LINK,                   \
16232                  NL80211_FLAG_NEED_WDEV_UP |            \
16233                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16234         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16235                  NL80211_FLAG_NEED_WDEV_UP |            \
16236                  NL80211_FLAG_NEED_RTNL)                \
16237         SELECTOR(__sel, WIPHY_CLEAR,                    \
16238                  NL80211_FLAG_NEED_WIPHY |              \
16239                  NL80211_FLAG_CLEAR_SKB)
16240
16241 enum nl80211_internal_flags_selector {
16242 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16243         INTERNAL_FLAG_SELECTORS(_)
16244 #undef SELECTOR
16245 };
16246
16247 static u32 nl80211_internal_flags[] = {
16248 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16249         INTERNAL_FLAG_SELECTORS(_)
16250 #undef SELECTOR
16251 };
16252
16253 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16254                             struct sk_buff *skb,
16255                             struct genl_info *info)
16256 {
16257         struct cfg80211_registered_device *rdev = NULL;
16258         struct wireless_dev *wdev = NULL;
16259         struct net_device *dev = NULL;
16260         u32 internal_flags;
16261         int err;
16262
16263         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16264                 return -EINVAL;
16265
16266         internal_flags = nl80211_internal_flags[ops->internal_flags];
16267
16268         rtnl_lock();
16269         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16270                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16271                 if (IS_ERR(rdev)) {
16272                         err = PTR_ERR(rdev);
16273                         goto out_unlock;
16274                 }
16275                 info->user_ptr[0] = rdev;
16276         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16277                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16278                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16279                                                   info->attrs);
16280                 if (IS_ERR(wdev)) {
16281                         err = PTR_ERR(wdev);
16282                         goto out_unlock;
16283                 }
16284
16285                 dev = wdev->netdev;
16286                 dev_hold(dev);
16287                 rdev = wiphy_to_rdev(wdev->wiphy);
16288
16289                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16290                         if (!dev) {
16291                                 err = -EINVAL;
16292                                 goto out_unlock;
16293                         }
16294
16295                         info->user_ptr[1] = dev;
16296                 } else {
16297                         info->user_ptr[1] = wdev;
16298                 }
16299
16300                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16301                     !wdev_running(wdev)) {
16302                         err = -ENETDOWN;
16303                         goto out_unlock;
16304                 }
16305
16306                 info->user_ptr[0] = rdev;
16307         }
16308
16309         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16310                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16311
16312                 if (!wdev) {
16313                         err = -EINVAL;
16314                         goto out_unlock;
16315                 }
16316
16317                 /* MLO -> require valid link ID */
16318                 if (wdev->valid_links &&
16319                     (!link_id ||
16320                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16321                         err = -EINVAL;
16322                         goto out_unlock;
16323                 }
16324
16325                 /* non-MLO -> no link ID attribute accepted */
16326                 if (!wdev->valid_links && link_id) {
16327                         err = -EINVAL;
16328                         goto out_unlock;
16329                 }
16330         }
16331
16332         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16333                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16334                     (wdev && wdev->valid_links)) {
16335                         err = -EINVAL;
16336                         goto out_unlock;
16337                 }
16338         }
16339
16340         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16341                 wiphy_lock(&rdev->wiphy);
16342                 /* we keep the mutex locked until post_doit */
16343                 __release(&rdev->wiphy.mtx);
16344         }
16345         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16346                 rtnl_unlock();
16347
16348         return 0;
16349 out_unlock:
16350         rtnl_unlock();
16351         dev_put(dev);
16352         return err;
16353 }
16354
16355 static void nl80211_post_doit(const struct genl_split_ops *ops,
16356                               struct sk_buff *skb,
16357                               struct genl_info *info)
16358 {
16359         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16360
16361         if (info->user_ptr[1]) {
16362                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16363                         struct wireless_dev *wdev = info->user_ptr[1];
16364
16365                         dev_put(wdev->netdev);
16366                 } else {
16367                         dev_put(info->user_ptr[1]);
16368                 }
16369         }
16370
16371         if (info->user_ptr[0] &&
16372             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16373                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16374
16375                 /* we kept the mutex locked since pre_doit */
16376                 __acquire(&rdev->wiphy.mtx);
16377                 wiphy_unlock(&rdev->wiphy);
16378         }
16379
16380         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16381                 rtnl_unlock();
16382
16383         /* If needed, clear the netlink message payload from the SKB
16384          * as it might contain key data that shouldn't stick around on
16385          * the heap after the SKB is freed. The netlink message header
16386          * is still needed for further processing, so leave it intact.
16387          */
16388         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16389                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16390
16391                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16392         }
16393 }
16394
16395 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16396                                      struct cfg80211_sar_specs *sar_specs,
16397                                      struct nlattr *spec[], int index)
16398 {
16399         u32 range_index, i;
16400
16401         if (!sar_specs || !spec)
16402                 return -EINVAL;
16403
16404         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16405             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16406                 return -EINVAL;
16407
16408         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16409
16410         /* check if range_index exceeds num_freq_ranges */
16411         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16412                 return -EINVAL;
16413
16414         /* check if range_index duplicates */
16415         for (i = 0; i < index; i++) {
16416                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16417                         return -EINVAL;
16418         }
16419
16420         sar_specs->sub_specs[index].power =
16421                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16422
16423         sar_specs->sub_specs[index].freq_range_index = range_index;
16424
16425         return 0;
16426 }
16427
16428 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16429 {
16430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16431         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16432         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16433         struct cfg80211_sar_specs *sar_spec;
16434         enum nl80211_sar_type type;
16435         struct nlattr *spec_list;
16436         u32 specs;
16437         int rem, err;
16438
16439         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16440                 return -EOPNOTSUPP;
16441
16442         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16443                 return -EINVAL;
16444
16445         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16446                          info->attrs[NL80211_ATTR_SAR_SPEC],
16447                          NULL, NULL);
16448
16449         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16450                 return -EINVAL;
16451
16452         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16453         if (type != rdev->wiphy.sar_capa->type)
16454                 return -EINVAL;
16455
16456         specs = 0;
16457         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16458                 specs++;
16459
16460         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16461                 return -EINVAL;
16462
16463         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16464         if (!sar_spec)
16465                 return -ENOMEM;
16466
16467         sar_spec->type = type;
16468         specs = 0;
16469         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16470                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16471                                  spec_list, NULL, NULL);
16472
16473                 switch (type) {
16474                 case NL80211_SAR_TYPE_POWER:
16475                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16476                                                       spec, specs)) {
16477                                 err = -EINVAL;
16478                                 goto error;
16479                         }
16480                         break;
16481                 default:
16482                         err = -EINVAL;
16483                         goto error;
16484                 }
16485                 specs++;
16486         }
16487
16488         sar_spec->num_sub_specs = specs;
16489
16490         rdev->cur_cmd_info = info;
16491         err = rdev_set_sar_specs(rdev, sar_spec);
16492         rdev->cur_cmd_info = NULL;
16493 error:
16494         kfree(sar_spec);
16495         return err;
16496 }
16497
16498 #define SELECTOR(__sel, name, value) \
16499         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16500 int __missing_selector(void);
16501 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16502
16503 static const struct genl_ops nl80211_ops[] = {
16504         {
16505                 .cmd = NL80211_CMD_GET_WIPHY,
16506                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16507                 .doit = nl80211_get_wiphy,
16508                 .dumpit = nl80211_dump_wiphy,
16509                 .done = nl80211_dump_wiphy_done,
16510                 /* can be retrieved by unprivileged users */
16511                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16512         },
16513 };
16514
16515 static const struct genl_small_ops nl80211_small_ops[] = {
16516         {
16517                 .cmd = NL80211_CMD_SET_WIPHY,
16518                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16519                 .doit = nl80211_set_wiphy,
16520                 .flags = GENL_UNS_ADMIN_PERM,
16521         },
16522         {
16523                 .cmd = NL80211_CMD_GET_INTERFACE,
16524                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16525                 .doit = nl80211_get_interface,
16526                 .dumpit = nl80211_dump_interface,
16527                 /* can be retrieved by unprivileged users */
16528                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16529         },
16530         {
16531                 .cmd = NL80211_CMD_SET_INTERFACE,
16532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16533                 .doit = nl80211_set_interface,
16534                 .flags = GENL_UNS_ADMIN_PERM,
16535                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16536                                          NL80211_FLAG_NEED_RTNL),
16537         },
16538         {
16539                 .cmd = NL80211_CMD_NEW_INTERFACE,
16540                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16541                 .doit = nl80211_new_interface,
16542                 .flags = GENL_UNS_ADMIN_PERM,
16543                 .internal_flags =
16544                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16545                                NL80211_FLAG_NEED_RTNL |
16546                                /* we take the wiphy mutex later ourselves */
16547                                NL80211_FLAG_NO_WIPHY_MTX),
16548         },
16549         {
16550                 .cmd = NL80211_CMD_DEL_INTERFACE,
16551                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16552                 .doit = nl80211_del_interface,
16553                 .flags = GENL_UNS_ADMIN_PERM,
16554                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16555                                          NL80211_FLAG_NEED_RTNL),
16556         },
16557         {
16558                 .cmd = NL80211_CMD_GET_KEY,
16559                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16560                 .doit = nl80211_get_key,
16561                 .flags = GENL_UNS_ADMIN_PERM,
16562                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16563         },
16564         {
16565                 .cmd = NL80211_CMD_SET_KEY,
16566                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16567                 .doit = nl80211_set_key,
16568                 .flags = GENL_UNS_ADMIN_PERM,
16569                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16570                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16571                                          NL80211_FLAG_CLEAR_SKB),
16572         },
16573         {
16574                 .cmd = NL80211_CMD_NEW_KEY,
16575                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16576                 .doit = nl80211_new_key,
16577                 .flags = GENL_UNS_ADMIN_PERM,
16578                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16579                                          NL80211_FLAG_CLEAR_SKB),
16580         },
16581         {
16582                 .cmd = NL80211_CMD_DEL_KEY,
16583                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16584                 .doit = nl80211_del_key,
16585                 .flags = GENL_UNS_ADMIN_PERM,
16586                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16587         },
16588         {
16589                 .cmd = NL80211_CMD_SET_BEACON,
16590                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16591                 .flags = GENL_UNS_ADMIN_PERM,
16592                 .doit = nl80211_set_beacon,
16593                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16594                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16595         },
16596         {
16597                 .cmd = NL80211_CMD_START_AP,
16598                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16599                 .flags = GENL_UNS_ADMIN_PERM,
16600                 .doit = nl80211_start_ap,
16601                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16602                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16603         },
16604         {
16605                 .cmd = NL80211_CMD_STOP_AP,
16606                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16607                 .flags = GENL_UNS_ADMIN_PERM,
16608                 .doit = nl80211_stop_ap,
16609                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16610                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16611         },
16612         {
16613                 .cmd = NL80211_CMD_GET_STATION,
16614                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16615                 .doit = nl80211_get_station,
16616                 .dumpit = nl80211_dump_station,
16617                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16618         },
16619         {
16620                 .cmd = NL80211_CMD_SET_STATION,
16621                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16622                 .doit = nl80211_set_station,
16623                 .flags = GENL_UNS_ADMIN_PERM,
16624                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16625         },
16626         {
16627                 .cmd = NL80211_CMD_NEW_STATION,
16628                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16629                 .doit = nl80211_new_station,
16630                 .flags = GENL_UNS_ADMIN_PERM,
16631                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16632         },
16633         {
16634                 .cmd = NL80211_CMD_DEL_STATION,
16635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16636                 .doit = nl80211_del_station,
16637                 .flags = GENL_UNS_ADMIN_PERM,
16638                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16639         },
16640         {
16641                 .cmd = NL80211_CMD_GET_MPATH,
16642                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16643                 .doit = nl80211_get_mpath,
16644                 .dumpit = nl80211_dump_mpath,
16645                 .flags = GENL_UNS_ADMIN_PERM,
16646                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16647         },
16648         {
16649                 .cmd = NL80211_CMD_GET_MPP,
16650                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16651                 .doit = nl80211_get_mpp,
16652                 .dumpit = nl80211_dump_mpp,
16653                 .flags = GENL_UNS_ADMIN_PERM,
16654                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16655         },
16656         {
16657                 .cmd = NL80211_CMD_SET_MPATH,
16658                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16659                 .doit = nl80211_set_mpath,
16660                 .flags = GENL_UNS_ADMIN_PERM,
16661                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16662         },
16663         {
16664                 .cmd = NL80211_CMD_NEW_MPATH,
16665                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16666                 .doit = nl80211_new_mpath,
16667                 .flags = GENL_UNS_ADMIN_PERM,
16668                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16669         },
16670         {
16671                 .cmd = NL80211_CMD_DEL_MPATH,
16672                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16673                 .doit = nl80211_del_mpath,
16674                 .flags = GENL_UNS_ADMIN_PERM,
16675                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16676         },
16677         {
16678                 .cmd = NL80211_CMD_SET_BSS,
16679                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16680                 .doit = nl80211_set_bss,
16681                 .flags = GENL_UNS_ADMIN_PERM,
16682                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16683                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16684         },
16685         {
16686                 .cmd = NL80211_CMD_GET_REG,
16687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16688                 .doit = nl80211_get_reg_do,
16689                 .dumpit = nl80211_get_reg_dump,
16690                 /* can be retrieved by unprivileged users */
16691         },
16692 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16693         {
16694                 .cmd = NL80211_CMD_SET_REG,
16695                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16696                 .doit = nl80211_set_reg,
16697                 .flags = GENL_ADMIN_PERM,
16698         },
16699 #endif
16700         {
16701                 .cmd = NL80211_CMD_REQ_SET_REG,
16702                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16703                 .doit = nl80211_req_set_reg,
16704                 .flags = GENL_ADMIN_PERM,
16705         },
16706         {
16707                 .cmd = NL80211_CMD_RELOAD_REGDB,
16708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16709                 .doit = nl80211_reload_regdb,
16710                 .flags = GENL_ADMIN_PERM,
16711         },
16712         {
16713                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16714                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16715                 .doit = nl80211_get_mesh_config,
16716                 /* can be retrieved by unprivileged users */
16717                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16718         },
16719         {
16720                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16721                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16722                 .doit = nl80211_update_mesh_config,
16723                 .flags = GENL_UNS_ADMIN_PERM,
16724                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16725         },
16726         {
16727                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16728                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16729                 .doit = nl80211_trigger_scan,
16730                 .flags = GENL_UNS_ADMIN_PERM,
16731                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16732         },
16733         {
16734                 .cmd = NL80211_CMD_ABORT_SCAN,
16735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16736                 .doit = nl80211_abort_scan,
16737                 .flags = GENL_UNS_ADMIN_PERM,
16738                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16739         },
16740         {
16741                 .cmd = NL80211_CMD_GET_SCAN,
16742                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16743                 .dumpit = nl80211_dump_scan,
16744         },
16745         {
16746                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16747                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16748                 .doit = nl80211_start_sched_scan,
16749                 .flags = GENL_UNS_ADMIN_PERM,
16750                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16751         },
16752         {
16753                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16754                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16755                 .doit = nl80211_stop_sched_scan,
16756                 .flags = GENL_UNS_ADMIN_PERM,
16757                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16758         },
16759         {
16760                 .cmd = NL80211_CMD_AUTHENTICATE,
16761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16762                 .doit = nl80211_authenticate,
16763                 .flags = GENL_UNS_ADMIN_PERM,
16764                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16765                                          NL80211_FLAG_CLEAR_SKB),
16766         },
16767         {
16768                 .cmd = NL80211_CMD_ASSOCIATE,
16769                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16770                 .doit = nl80211_associate,
16771                 .flags = GENL_UNS_ADMIN_PERM,
16772                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16773                                          NL80211_FLAG_CLEAR_SKB),
16774         },
16775         {
16776                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16777                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16778                 .doit = nl80211_deauthenticate,
16779                 .flags = GENL_UNS_ADMIN_PERM,
16780                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16781         },
16782         {
16783                 .cmd = NL80211_CMD_DISASSOCIATE,
16784                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16785                 .doit = nl80211_disassociate,
16786                 .flags = GENL_UNS_ADMIN_PERM,
16787                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16788         },
16789         {
16790                 .cmd = NL80211_CMD_JOIN_IBSS,
16791                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16792                 .doit = nl80211_join_ibss,
16793                 .flags = GENL_UNS_ADMIN_PERM,
16794                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16795         },
16796         {
16797                 .cmd = NL80211_CMD_LEAVE_IBSS,
16798                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16799                 .doit = nl80211_leave_ibss,
16800                 .flags = GENL_UNS_ADMIN_PERM,
16801                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16802         },
16803 #ifdef CONFIG_NL80211_TESTMODE
16804         {
16805                 .cmd = NL80211_CMD_TESTMODE,
16806                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16807                 .doit = nl80211_testmode_do,
16808                 .dumpit = nl80211_testmode_dump,
16809                 .flags = GENL_UNS_ADMIN_PERM,
16810                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16811         },
16812 #endif
16813         {
16814                 .cmd = NL80211_CMD_CONNECT,
16815                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16816                 .doit = nl80211_connect,
16817                 .flags = GENL_UNS_ADMIN_PERM,
16818                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16819                                          NL80211_FLAG_CLEAR_SKB),
16820         },
16821         {
16822                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16823                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16824                 .doit = nl80211_update_connect_params,
16825                 .flags = GENL_ADMIN_PERM,
16826                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16827                                          NL80211_FLAG_CLEAR_SKB),
16828         },
16829         {
16830                 .cmd = NL80211_CMD_DISCONNECT,
16831                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16832                 .doit = nl80211_disconnect,
16833                 .flags = GENL_UNS_ADMIN_PERM,
16834                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16835         },
16836         {
16837                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16838                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16839                 .doit = nl80211_wiphy_netns,
16840                 .flags = GENL_UNS_ADMIN_PERM,
16841                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16842                                          NL80211_FLAG_NEED_RTNL |
16843                                          NL80211_FLAG_NO_WIPHY_MTX),
16844         },
16845         {
16846                 .cmd = NL80211_CMD_GET_SURVEY,
16847                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16848                 .dumpit = nl80211_dump_survey,
16849         },
16850         {
16851                 .cmd = NL80211_CMD_SET_PMKSA,
16852                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16853                 .doit = nl80211_setdel_pmksa,
16854                 .flags = GENL_UNS_ADMIN_PERM,
16855                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16856                                          NL80211_FLAG_CLEAR_SKB),
16857         },
16858         {
16859                 .cmd = NL80211_CMD_DEL_PMKSA,
16860                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16861                 .doit = nl80211_setdel_pmksa,
16862                 .flags = GENL_UNS_ADMIN_PERM,
16863                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16864         },
16865         {
16866                 .cmd = NL80211_CMD_FLUSH_PMKSA,
16867                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16868                 .doit = nl80211_flush_pmksa,
16869                 .flags = GENL_UNS_ADMIN_PERM,
16870                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16871         },
16872         {
16873                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
16874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16875                 .doit = nl80211_remain_on_channel,
16876                 .flags = GENL_UNS_ADMIN_PERM,
16877                 /* FIXME: requiring a link ID here is probably not good */
16878                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16879                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16880         },
16881         {
16882                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16883                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16884                 .doit = nl80211_cancel_remain_on_channel,
16885                 .flags = GENL_UNS_ADMIN_PERM,
16886                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16887         },
16888         {
16889                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
16890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16891                 .doit = nl80211_set_tx_bitrate_mask,
16892                 .flags = GENL_UNS_ADMIN_PERM,
16893                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16894                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16895         },
16896         {
16897                 .cmd = NL80211_CMD_REGISTER_FRAME,
16898                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16899                 .doit = nl80211_register_mgmt,
16900                 .flags = GENL_UNS_ADMIN_PERM,
16901                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16902         },
16903         {
16904                 .cmd = NL80211_CMD_FRAME,
16905                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16906                 .doit = nl80211_tx_mgmt,
16907                 .flags = GENL_UNS_ADMIN_PERM,
16908                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16909         },
16910         {
16911                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
16912                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16913                 .doit = nl80211_tx_mgmt_cancel_wait,
16914                 .flags = GENL_UNS_ADMIN_PERM,
16915                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16916         },
16917         {
16918                 .cmd = NL80211_CMD_SET_POWER_SAVE,
16919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16920                 .doit = nl80211_set_power_save,
16921                 .flags = GENL_UNS_ADMIN_PERM,
16922                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16923         },
16924         {
16925                 .cmd = NL80211_CMD_GET_POWER_SAVE,
16926                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16927                 .doit = nl80211_get_power_save,
16928                 /* can be retrieved by unprivileged users */
16929                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16930         },
16931         {
16932                 .cmd = NL80211_CMD_SET_CQM,
16933                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16934                 .doit = nl80211_set_cqm,
16935                 .flags = GENL_UNS_ADMIN_PERM,
16936                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16937         },
16938         {
16939                 .cmd = NL80211_CMD_SET_CHANNEL,
16940                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16941                 .doit = nl80211_set_channel,
16942                 .flags = GENL_UNS_ADMIN_PERM,
16943                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16944                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16945         },
16946         {
16947                 .cmd = NL80211_CMD_JOIN_MESH,
16948                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16949                 .doit = nl80211_join_mesh,
16950                 .flags = GENL_UNS_ADMIN_PERM,
16951                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16952         },
16953         {
16954                 .cmd = NL80211_CMD_LEAVE_MESH,
16955                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16956                 .doit = nl80211_leave_mesh,
16957                 .flags = GENL_UNS_ADMIN_PERM,
16958                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16959         },
16960         {
16961                 .cmd = NL80211_CMD_JOIN_OCB,
16962                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16963                 .doit = nl80211_join_ocb,
16964                 .flags = GENL_UNS_ADMIN_PERM,
16965                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16966         },
16967         {
16968                 .cmd = NL80211_CMD_LEAVE_OCB,
16969                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16970                 .doit = nl80211_leave_ocb,
16971                 .flags = GENL_UNS_ADMIN_PERM,
16972                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16973         },
16974 #ifdef CONFIG_PM
16975         {
16976                 .cmd = NL80211_CMD_GET_WOWLAN,
16977                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16978                 .doit = nl80211_get_wowlan,
16979                 /* can be retrieved by unprivileged users */
16980                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16981         },
16982         {
16983                 .cmd = NL80211_CMD_SET_WOWLAN,
16984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16985                 .doit = nl80211_set_wowlan,
16986                 .flags = GENL_UNS_ADMIN_PERM,
16987                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16988         },
16989 #endif
16990         {
16991                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
16992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16993                 .doit = nl80211_set_rekey_data,
16994                 .flags = GENL_UNS_ADMIN_PERM,
16995                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16996                                          NL80211_FLAG_CLEAR_SKB),
16997         },
16998         {
16999                 .cmd = NL80211_CMD_TDLS_MGMT,
17000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17001                 .doit = nl80211_tdls_mgmt,
17002                 .flags = GENL_UNS_ADMIN_PERM,
17003                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17004         },
17005         {
17006                 .cmd = NL80211_CMD_TDLS_OPER,
17007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17008                 .doit = nl80211_tdls_oper,
17009                 .flags = GENL_UNS_ADMIN_PERM,
17010                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17011         },
17012         {
17013                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17014                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17015                 .doit = nl80211_register_unexpected_frame,
17016                 .flags = GENL_UNS_ADMIN_PERM,
17017                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17018         },
17019         {
17020                 .cmd = NL80211_CMD_PROBE_CLIENT,
17021                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17022                 .doit = nl80211_probe_client,
17023                 .flags = GENL_UNS_ADMIN_PERM,
17024                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17025         },
17026         {
17027                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17028                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17029                 .doit = nl80211_register_beacons,
17030                 .flags = GENL_UNS_ADMIN_PERM,
17031                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17032         },
17033         {
17034                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17036                 .doit = nl80211_set_noack_map,
17037                 .flags = GENL_UNS_ADMIN_PERM,
17038                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17039         },
17040         {
17041                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17043                 .doit = nl80211_start_p2p_device,
17044                 .flags = GENL_UNS_ADMIN_PERM,
17045                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17046                                          NL80211_FLAG_NEED_RTNL),
17047         },
17048         {
17049                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17050                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17051                 .doit = nl80211_stop_p2p_device,
17052                 .flags = GENL_UNS_ADMIN_PERM,
17053                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17054                                          NL80211_FLAG_NEED_RTNL),
17055         },
17056         {
17057                 .cmd = NL80211_CMD_START_NAN,
17058                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17059                 .doit = nl80211_start_nan,
17060                 .flags = GENL_ADMIN_PERM,
17061                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17062                                          NL80211_FLAG_NEED_RTNL),
17063         },
17064         {
17065                 .cmd = NL80211_CMD_STOP_NAN,
17066                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17067                 .doit = nl80211_stop_nan,
17068                 .flags = GENL_ADMIN_PERM,
17069                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17070                                          NL80211_FLAG_NEED_RTNL),
17071         },
17072         {
17073                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17075                 .doit = nl80211_nan_add_func,
17076                 .flags = GENL_ADMIN_PERM,
17077                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17078         },
17079         {
17080                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17082                 .doit = nl80211_nan_del_func,
17083                 .flags = GENL_ADMIN_PERM,
17084                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17085         },
17086         {
17087                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17089                 .doit = nl80211_nan_change_config,
17090                 .flags = GENL_ADMIN_PERM,
17091                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17092         },
17093         {
17094                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17095                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17096                 .doit = nl80211_set_mcast_rate,
17097                 .flags = GENL_UNS_ADMIN_PERM,
17098                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17099         },
17100         {
17101                 .cmd = NL80211_CMD_SET_MAC_ACL,
17102                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17103                 .doit = nl80211_set_mac_acl,
17104                 .flags = GENL_UNS_ADMIN_PERM,
17105                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17106                                          NL80211_FLAG_MLO_UNSUPPORTED),
17107         },
17108         {
17109                 .cmd = NL80211_CMD_RADAR_DETECT,
17110                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17111                 .doit = nl80211_start_radar_detection,
17112                 .flags = GENL_UNS_ADMIN_PERM,
17113                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17114                                          NL80211_FLAG_NO_WIPHY_MTX |
17115                                          NL80211_FLAG_MLO_UNSUPPORTED),
17116         },
17117         {
17118                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17119                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17120                 .doit = nl80211_get_protocol_features,
17121         },
17122         {
17123                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17124                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17125                 .doit = nl80211_update_ft_ies,
17126                 .flags = GENL_UNS_ADMIN_PERM,
17127                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17128         },
17129         {
17130                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17131                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17132                 .doit = nl80211_crit_protocol_start,
17133                 .flags = GENL_UNS_ADMIN_PERM,
17134                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17135         },
17136         {
17137                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17138                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17139                 .doit = nl80211_crit_protocol_stop,
17140                 .flags = GENL_UNS_ADMIN_PERM,
17141                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17142         },
17143         {
17144                 .cmd = NL80211_CMD_GET_COALESCE,
17145                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17146                 .doit = nl80211_get_coalesce,
17147                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17148         },
17149         {
17150                 .cmd = NL80211_CMD_SET_COALESCE,
17151                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17152                 .doit = nl80211_set_coalesce,
17153                 .flags = GENL_UNS_ADMIN_PERM,
17154                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17155         },
17156         {
17157                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17159                 .doit = nl80211_channel_switch,
17160                 .flags = GENL_UNS_ADMIN_PERM,
17161                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17162                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17163         },
17164         {
17165                 .cmd = NL80211_CMD_VENDOR,
17166                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17167                 .doit = nl80211_vendor_cmd,
17168                 .dumpit = nl80211_vendor_cmd_dump,
17169                 .flags = GENL_UNS_ADMIN_PERM,
17170                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17171                                          NL80211_FLAG_CLEAR_SKB),
17172         },
17173         {
17174                 .cmd = NL80211_CMD_SET_QOS_MAP,
17175                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17176                 .doit = nl80211_set_qos_map,
17177                 .flags = GENL_UNS_ADMIN_PERM,
17178                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17179         },
17180         {
17181                 .cmd = NL80211_CMD_ADD_TX_TS,
17182                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17183                 .doit = nl80211_add_tx_ts,
17184                 .flags = GENL_UNS_ADMIN_PERM,
17185                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17186                                          NL80211_FLAG_MLO_UNSUPPORTED),
17187         },
17188         {
17189                 .cmd = NL80211_CMD_DEL_TX_TS,
17190                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17191                 .doit = nl80211_del_tx_ts,
17192                 .flags = GENL_UNS_ADMIN_PERM,
17193                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17194         },
17195         {
17196                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17197                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17198                 .doit = nl80211_tdls_channel_switch,
17199                 .flags = GENL_UNS_ADMIN_PERM,
17200                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17201         },
17202         {
17203                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17204                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17205                 .doit = nl80211_tdls_cancel_channel_switch,
17206                 .flags = GENL_UNS_ADMIN_PERM,
17207                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17208         },
17209         {
17210                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17211                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17212                 .doit = nl80211_set_multicast_to_unicast,
17213                 .flags = GENL_UNS_ADMIN_PERM,
17214                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17215         },
17216         {
17217                 .cmd = NL80211_CMD_SET_PMK,
17218                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17219                 .doit = nl80211_set_pmk,
17220                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17221                                          NL80211_FLAG_CLEAR_SKB),
17222         },
17223         {
17224                 .cmd = NL80211_CMD_DEL_PMK,
17225                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17226                 .doit = nl80211_del_pmk,
17227                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17228         },
17229         {
17230                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17231                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17232                 .doit = nl80211_external_auth,
17233                 .flags = GENL_ADMIN_PERM,
17234                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17235         },
17236         {
17237                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17238                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17239                 .doit = nl80211_tx_control_port,
17240                 .flags = GENL_UNS_ADMIN_PERM,
17241                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17242         },
17243         {
17244                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17245                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17246                 .doit = nl80211_get_ftm_responder_stats,
17247                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17248                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17249         },
17250         {
17251                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17252                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17253                 .doit = nl80211_pmsr_start,
17254                 .flags = GENL_UNS_ADMIN_PERM,
17255                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17256         },
17257         {
17258                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17259                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17260                 .doit = nl80211_notify_radar_detection,
17261                 .flags = GENL_UNS_ADMIN_PERM,
17262                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17263         },
17264         {
17265                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17266                 .doit = nl80211_update_owe_info,
17267                 .flags = GENL_ADMIN_PERM,
17268                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17269         },
17270         {
17271                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17272                 .doit = nl80211_probe_mesh_link,
17273                 .flags = GENL_UNS_ADMIN_PERM,
17274                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17275         },
17276         {
17277                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17278                 .doit = nl80211_set_tid_config,
17279                 .flags = GENL_UNS_ADMIN_PERM,
17280                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17281                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17282         },
17283         {
17284                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17285                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17286                 .doit = nl80211_set_sar_specs,
17287                 .flags = GENL_UNS_ADMIN_PERM,
17288                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17289                                          NL80211_FLAG_NEED_RTNL),
17290         },
17291         {
17292                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17293                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17294                 .doit = nl80211_color_change,
17295                 .flags = GENL_UNS_ADMIN_PERM,
17296                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17297         },
17298         {
17299                 .cmd = NL80211_CMD_SET_FILS_AAD,
17300                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17301                 .doit = nl80211_set_fils_aad,
17302                 .flags = GENL_UNS_ADMIN_PERM,
17303                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17304         },
17305         {
17306                 .cmd = NL80211_CMD_ADD_LINK,
17307                 .doit = nl80211_add_link,
17308                 .flags = GENL_UNS_ADMIN_PERM,
17309                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17310         },
17311         {
17312                 .cmd = NL80211_CMD_REMOVE_LINK,
17313                 .doit = nl80211_remove_link,
17314                 .flags = GENL_UNS_ADMIN_PERM,
17315                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17316                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17317         },
17318         {
17319                 .cmd = NL80211_CMD_ADD_LINK_STA,
17320                 .doit = nl80211_add_link_station,
17321                 .flags = GENL_UNS_ADMIN_PERM,
17322                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17323                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17324         },
17325         {
17326                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17327                 .doit = nl80211_modify_link_station,
17328                 .flags = GENL_UNS_ADMIN_PERM,
17329                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17330                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17331         },
17332         {
17333                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17334                 .doit = nl80211_remove_link_station,
17335                 .flags = GENL_UNS_ADMIN_PERM,
17336                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17337                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17338         },
17339 };
17340
17341 static struct genl_family nl80211_fam __ro_after_init = {
17342         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17343         .hdrsize = 0,                   /* no private header */
17344         .version = 1,                   /* no particular meaning now */
17345         .maxattr = NL80211_ATTR_MAX,
17346         .policy = nl80211_policy,
17347         .netnsok = true,
17348         .pre_doit = nl80211_pre_doit,
17349         .post_doit = nl80211_post_doit,
17350         .module = THIS_MODULE,
17351         .ops = nl80211_ops,
17352         .n_ops = ARRAY_SIZE(nl80211_ops),
17353         .small_ops = nl80211_small_ops,
17354         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17355         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17356         .mcgrps = nl80211_mcgrps,
17357         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17358         .parallel_ops = true,
17359 };
17360
17361 /* notification functions */
17362
17363 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17364                           enum nl80211_commands cmd)
17365 {
17366         struct sk_buff *msg;
17367         struct nl80211_dump_wiphy_state state = {};
17368
17369         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17370                 cmd != NL80211_CMD_DEL_WIPHY);
17371
17372         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17373         if (!msg)
17374                 return;
17375
17376         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17377                 nlmsg_free(msg);
17378                 return;
17379         }
17380
17381         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17382                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17383 }
17384
17385 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17386                                 struct wireless_dev *wdev,
17387                                 enum nl80211_commands cmd)
17388 {
17389         struct sk_buff *msg;
17390
17391         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17392         if (!msg)
17393                 return;
17394
17395         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17396                 nlmsg_free(msg);
17397                 return;
17398         }
17399
17400         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17401                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17402 }
17403
17404 static int nl80211_add_scan_req(struct sk_buff *msg,
17405                                 struct cfg80211_registered_device *rdev)
17406 {
17407         struct cfg80211_scan_request *req = rdev->scan_req;
17408         struct nlattr *nest;
17409         int i;
17410         struct cfg80211_scan_info *info;
17411
17412         if (WARN_ON(!req))
17413                 return 0;
17414
17415         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17416         if (!nest)
17417                 goto nla_put_failure;
17418         for (i = 0; i < req->n_ssids; i++) {
17419                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17420                         goto nla_put_failure;
17421         }
17422         nla_nest_end(msg, nest);
17423
17424         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17425                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17426                 if (!nest)
17427                         goto nla_put_failure;
17428                 for (i = 0; i < req->n_channels; i++) {
17429                         if (nla_put_u32(msg, i,
17430                                    ieee80211_channel_to_khz(req->channels[i])))
17431                                 goto nla_put_failure;
17432                 }
17433                 nla_nest_end(msg, nest);
17434         } else {
17435                 nest = nla_nest_start_noflag(msg,
17436                                              NL80211_ATTR_SCAN_FREQUENCIES);
17437                 if (!nest)
17438                         goto nla_put_failure;
17439                 for (i = 0; i < req->n_channels; i++) {
17440                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17441                                 goto nla_put_failure;
17442                 }
17443                 nla_nest_end(msg, nest);
17444         }
17445
17446         if (req->ie &&
17447             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17448                 goto nla_put_failure;
17449
17450         if (req->flags &&
17451             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17452                 goto nla_put_failure;
17453
17454         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17455                 &rdev->scan_req->info;
17456         if (info->scan_start_tsf &&
17457             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17458                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17459              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17460                      info->tsf_bssid)))
17461                 goto nla_put_failure;
17462
17463         return 0;
17464  nla_put_failure:
17465         return -ENOBUFS;
17466 }
17467
17468 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17469                                  struct cfg80211_registered_device *rdev,
17470                                  struct wireless_dev *wdev,
17471                                  u32 portid, u32 seq, int flags,
17472                                  u32 cmd)
17473 {
17474         void *hdr;
17475
17476         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17477         if (!hdr)
17478                 return -1;
17479
17480         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17481             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17482                                          wdev->netdev->ifindex)) ||
17483             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17484                               NL80211_ATTR_PAD))
17485                 goto nla_put_failure;
17486
17487         /* ignore errors and send incomplete event anyway */
17488         nl80211_add_scan_req(msg, rdev);
17489
17490         genlmsg_end(msg, hdr);
17491         return 0;
17492
17493  nla_put_failure:
17494         genlmsg_cancel(msg, hdr);
17495         return -EMSGSIZE;
17496 }
17497
17498 static int
17499 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17500                             struct cfg80211_sched_scan_request *req, u32 cmd)
17501 {
17502         void *hdr;
17503
17504         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17505         if (!hdr)
17506                 return -1;
17507
17508         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17509                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17510             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17511             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17512                               NL80211_ATTR_PAD))
17513                 goto nla_put_failure;
17514
17515         genlmsg_end(msg, hdr);
17516         return 0;
17517
17518  nla_put_failure:
17519         genlmsg_cancel(msg, hdr);
17520         return -EMSGSIZE;
17521 }
17522
17523 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17524                              struct wireless_dev *wdev)
17525 {
17526         struct sk_buff *msg;
17527
17528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17529         if (!msg)
17530                 return;
17531
17532         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17533                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17534                 nlmsg_free(msg);
17535                 return;
17536         }
17537
17538         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17539                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17540 }
17541
17542 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17543                                        struct wireless_dev *wdev, bool aborted)
17544 {
17545         struct sk_buff *msg;
17546
17547         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17548         if (!msg)
17549                 return NULL;
17550
17551         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17552                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17553                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17554                 nlmsg_free(msg);
17555                 return NULL;
17556         }
17557
17558         return msg;
17559 }
17560
17561 /* send message created by nl80211_build_scan_msg() */
17562 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17563                            struct sk_buff *msg)
17564 {
17565         if (!msg)
17566                 return;
17567
17568         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17569                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17570 }
17571
17572 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17573 {
17574         struct sk_buff *msg;
17575
17576         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17577         if (!msg)
17578                 return;
17579
17580         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17581                 nlmsg_free(msg);
17582                 return;
17583         }
17584
17585         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17586                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17587 }
17588
17589 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17590                                           struct regulatory_request *request)
17591 {
17592         /* Userspace can always count this one always being set */
17593         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17594                 goto nla_put_failure;
17595
17596         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17597                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17598                                NL80211_REGDOM_TYPE_WORLD))
17599                         goto nla_put_failure;
17600         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17601                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17602                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17603                         goto nla_put_failure;
17604         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17605                    request->intersect) {
17606                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17607                                NL80211_REGDOM_TYPE_INTERSECTION))
17608                         goto nla_put_failure;
17609         } else {
17610                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17611                                NL80211_REGDOM_TYPE_COUNTRY) ||
17612                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17613                                    request->alpha2))
17614                         goto nla_put_failure;
17615         }
17616
17617         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17618                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17619
17620                 if (wiphy &&
17621                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17622                         goto nla_put_failure;
17623
17624                 if (wiphy &&
17625                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17626                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17627                         goto nla_put_failure;
17628         }
17629
17630         return true;
17631
17632 nla_put_failure:
17633         return false;
17634 }
17635
17636 /*
17637  * This can happen on global regulatory changes or device specific settings
17638  * based on custom regulatory domains.
17639  */
17640 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17641                                      struct regulatory_request *request)
17642 {
17643         struct sk_buff *msg;
17644         void *hdr;
17645
17646         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17647         if (!msg)
17648                 return;
17649
17650         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17651         if (!hdr)
17652                 goto nla_put_failure;
17653
17654         if (!nl80211_reg_change_event_fill(msg, request))
17655                 goto nla_put_failure;
17656
17657         genlmsg_end(msg, hdr);
17658
17659         rcu_read_lock();
17660         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17661                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17662         rcu_read_unlock();
17663
17664         return;
17665
17666 nla_put_failure:
17667         nlmsg_free(msg);
17668 }
17669
17670 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17671                                     struct net_device *netdev,
17672                                     const u8 *buf, size_t len,
17673                                     enum nl80211_commands cmd, gfp_t gfp,
17674                                     int uapsd_queues, const u8 *req_ies,
17675                                     size_t req_ies_len, bool reconnect)
17676 {
17677         struct sk_buff *msg;
17678         void *hdr;
17679
17680         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17681         if (!msg)
17682                 return;
17683
17684         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17685         if (!hdr) {
17686                 nlmsg_free(msg);
17687                 return;
17688         }
17689
17690         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17691             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17692             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17693             (req_ies &&
17694              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17695                 goto nla_put_failure;
17696
17697         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17698                 goto nla_put_failure;
17699
17700         if (uapsd_queues >= 0) {
17701                 struct nlattr *nla_wmm =
17702                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17703                 if (!nla_wmm)
17704                         goto nla_put_failure;
17705
17706                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17707                                uapsd_queues))
17708                         goto nla_put_failure;
17709
17710                 nla_nest_end(msg, nla_wmm);
17711         }
17712
17713         genlmsg_end(msg, hdr);
17714
17715         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17716                                 NL80211_MCGRP_MLME, gfp);
17717         return;
17718
17719  nla_put_failure:
17720         nlmsg_free(msg);
17721 }
17722
17723 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17724                           struct net_device *netdev, const u8 *buf,
17725                           size_t len, gfp_t gfp)
17726 {
17727         nl80211_send_mlme_event(rdev, netdev, buf, len,
17728                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17729                                 false);
17730 }
17731
17732 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17733                            struct net_device *netdev,
17734                            struct cfg80211_rx_assoc_resp *data)
17735 {
17736         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17737                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17738                                 data->uapsd_queues,
17739                                 data->req_ies, data->req_ies_len, false);
17740 }
17741
17742 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17743                          struct net_device *netdev, const u8 *buf,
17744                          size_t len, bool reconnect, gfp_t gfp)
17745 {
17746         nl80211_send_mlme_event(rdev, netdev, buf, len,
17747                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17748                                 reconnect);
17749 }
17750
17751 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17752                            struct net_device *netdev, const u8 *buf,
17753                            size_t len, bool reconnect, gfp_t gfp)
17754 {
17755         nl80211_send_mlme_event(rdev, netdev, buf, len,
17756                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17757                                 reconnect);
17758 }
17759
17760 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17761                                   size_t len)
17762 {
17763         struct wireless_dev *wdev = dev->ieee80211_ptr;
17764         struct wiphy *wiphy = wdev->wiphy;
17765         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17766         const struct ieee80211_mgmt *mgmt = (void *)buf;
17767         u32 cmd;
17768
17769         if (WARN_ON(len < 2))
17770                 return;
17771
17772         if (ieee80211_is_deauth(mgmt->frame_control)) {
17773                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17774         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17775                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17776         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17777                 if (wdev->unprot_beacon_reported &&
17778                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17779                         return;
17780                 cmd = NL80211_CMD_UNPROT_BEACON;
17781                 wdev->unprot_beacon_reported = jiffies;
17782         } else {
17783                 return;
17784         }
17785
17786         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17787         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17788                                 NULL, 0, false);
17789 }
17790 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17791
17792 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17793                                       struct net_device *netdev, int cmd,
17794                                       const u8 *addr, gfp_t gfp)
17795 {
17796         struct sk_buff *msg;
17797         void *hdr;
17798
17799         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17800         if (!msg)
17801                 return;
17802
17803         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17804         if (!hdr) {
17805                 nlmsg_free(msg);
17806                 return;
17807         }
17808
17809         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17810             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17811             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17812             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17813                 goto nla_put_failure;
17814
17815         genlmsg_end(msg, hdr);
17816
17817         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17818                                 NL80211_MCGRP_MLME, gfp);
17819         return;
17820
17821  nla_put_failure:
17822         nlmsg_free(msg);
17823 }
17824
17825 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17826                                struct net_device *netdev, const u8 *addr,
17827                                gfp_t gfp)
17828 {
17829         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17830                                   addr, gfp);
17831 }
17832
17833 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17834                                 struct net_device *netdev, const u8 *addr,
17835                                 gfp_t gfp)
17836 {
17837         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17838                                   addr, gfp);
17839 }
17840
17841 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
17842                                  struct net_device *netdev,
17843                                  struct cfg80211_connect_resp_params *cr,
17844                                  gfp_t gfp)
17845 {
17846         struct sk_buff *msg;
17847         void *hdr;
17848         unsigned int link;
17849         size_t link_info_size = 0;
17850         const u8 *connected_addr = cr->valid_links ?
17851                                    cr->ap_mld_addr : cr->links[0].bssid;
17852
17853         if (cr->valid_links) {
17854                 for_each_valid_link(cr, link) {
17855                         /* Nested attribute header */
17856                         link_info_size += NLA_HDRLEN;
17857                         /* Link ID */
17858                         link_info_size += nla_total_size(sizeof(u8));
17859                         link_info_size += cr->links[link].addr ?
17860                                           nla_total_size(ETH_ALEN) : 0;
17861                         link_info_size += (cr->links[link].bssid ||
17862                                            cr->links[link].bss) ?
17863                                           nla_total_size(ETH_ALEN) : 0;
17864                         link_info_size += nla_total_size(sizeof(u16));
17865                 }
17866         }
17867
17868         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
17869                         cr->fils.kek_len + cr->fils.pmk_len +
17870                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
17871                         gfp);
17872         if (!msg)
17873                 return;
17874
17875         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
17876         if (!hdr) {
17877                 nlmsg_free(msg);
17878                 return;
17879         }
17880
17881         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17882             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17883             (connected_addr &&
17884              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
17885             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17886                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
17887                         cr->status) ||
17888             (cr->status < 0 &&
17889              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17890               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
17891                           cr->timeout_reason))) ||
17892             (cr->req_ie &&
17893              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
17894             (cr->resp_ie &&
17895              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
17896                      cr->resp_ie)) ||
17897             (cr->fils.update_erp_next_seq_num &&
17898              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17899                          cr->fils.erp_next_seq_num)) ||
17900             (cr->status == WLAN_STATUS_SUCCESS &&
17901              ((cr->fils.kek &&
17902                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
17903                        cr->fils.kek)) ||
17904               (cr->fils.pmk &&
17905                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
17906               (cr->fils.pmkid &&
17907                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
17908                 goto nla_put_failure;
17909
17910         if (cr->valid_links) {
17911                 int i = 1;
17912                 struct nlattr *nested;
17913
17914                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17915                 if (!nested)
17916                         goto nla_put_failure;
17917
17918                 for_each_valid_link(cr, link) {
17919                         struct nlattr *nested_mlo_links;
17920                         const u8 *bssid = cr->links[link].bss ?
17921                                           cr->links[link].bss->bssid :
17922                                           cr->links[link].bssid;
17923
17924                         nested_mlo_links = nla_nest_start(msg, i);
17925                         if (!nested_mlo_links)
17926                                 goto nla_put_failure;
17927
17928                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17929                             (bssid &&
17930                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17931                             (cr->links[link].addr &&
17932                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17933                                      cr->links[link].addr)) ||
17934                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17935                                         cr->links[link].status))
17936                                 goto nla_put_failure;
17937
17938                         nla_nest_end(msg, nested_mlo_links);
17939                         i++;
17940                 }
17941                 nla_nest_end(msg, nested);
17942         }
17943
17944         genlmsg_end(msg, hdr);
17945
17946         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17947                                 NL80211_MCGRP_MLME, gfp);
17948         return;
17949
17950  nla_put_failure:
17951         nlmsg_free(msg);
17952 }
17953
17954 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
17955                          struct net_device *netdev,
17956                          struct cfg80211_roam_info *info, gfp_t gfp)
17957 {
17958         struct sk_buff *msg;
17959         void *hdr;
17960         size_t link_info_size = 0;
17961         unsigned int link;
17962         const u8 *connected_addr = info->ap_mld_addr ?
17963                                    info->ap_mld_addr :
17964                                    (info->links[0].bss ?
17965                                     info->links[0].bss->bssid :
17966                                     info->links[0].bssid);
17967
17968         if (info->valid_links) {
17969                 for_each_valid_link(info, link) {
17970                         /* Nested attribute header */
17971                         link_info_size += NLA_HDRLEN;
17972                         /* Link ID */
17973                         link_info_size += nla_total_size(sizeof(u8));
17974                         link_info_size += info->links[link].addr ?
17975                                           nla_total_size(ETH_ALEN) : 0;
17976                         link_info_size += (info->links[link].bssid ||
17977                                            info->links[link].bss) ?
17978                                           nla_total_size(ETH_ALEN) : 0;
17979                 }
17980         }
17981
17982         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
17983                         info->fils.kek_len + info->fils.pmk_len +
17984                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
17985                         link_info_size, gfp);
17986         if (!msg)
17987                 return;
17988
17989         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
17990         if (!hdr) {
17991                 nlmsg_free(msg);
17992                 return;
17993         }
17994
17995         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17996             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17997             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
17998             (info->req_ie &&
17999              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18000                      info->req_ie)) ||
18001             (info->resp_ie &&
18002              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18003                      info->resp_ie)) ||
18004             (info->fils.update_erp_next_seq_num &&
18005              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18006                          info->fils.erp_next_seq_num)) ||
18007             (info->fils.kek &&
18008              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18009                      info->fils.kek)) ||
18010             (info->fils.pmk &&
18011              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18012             (info->fils.pmkid &&
18013              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18014                 goto nla_put_failure;
18015
18016         if (info->valid_links) {
18017                 int i = 1;
18018                 struct nlattr *nested;
18019
18020                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18021                 if (!nested)
18022                         goto nla_put_failure;
18023
18024                 for_each_valid_link(info, link) {
18025                         struct nlattr *nested_mlo_links;
18026                         const u8 *bssid = info->links[link].bss ?
18027                                           info->links[link].bss->bssid :
18028                                           info->links[link].bssid;
18029
18030                         nested_mlo_links = nla_nest_start(msg, i);
18031                         if (!nested_mlo_links)
18032                                 goto nla_put_failure;
18033
18034                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18035                             (bssid &&
18036                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18037                             (info->links[link].addr &&
18038                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18039                                      info->links[link].addr)))
18040                                 goto nla_put_failure;
18041
18042                         nla_nest_end(msg, nested_mlo_links);
18043                         i++;
18044                 }
18045                 nla_nest_end(msg, nested);
18046         }
18047
18048         genlmsg_end(msg, hdr);
18049
18050         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18051                                 NL80211_MCGRP_MLME, gfp);
18052         return;
18053
18054  nla_put_failure:
18055         nlmsg_free(msg);
18056 }
18057
18058 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18059                                   struct net_device *netdev, const u8 *bssid,
18060                                   const u8 *td_bitmap, u8 td_bitmap_len)
18061 {
18062         struct sk_buff *msg;
18063         void *hdr;
18064
18065         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18066         if (!msg)
18067                 return;
18068
18069         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18070         if (!hdr) {
18071                 nlmsg_free(msg);
18072                 return;
18073         }
18074
18075         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18076             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18077             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18078                 goto nla_put_failure;
18079
18080         if ((td_bitmap_len > 0) && td_bitmap)
18081                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18082                             td_bitmap_len, td_bitmap))
18083                         goto nla_put_failure;
18084
18085         genlmsg_end(msg, hdr);
18086
18087         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18088                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18089         return;
18090
18091  nla_put_failure:
18092         nlmsg_free(msg);
18093 }
18094
18095 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18096                                struct net_device *netdev, u16 reason,
18097                                const u8 *ie, size_t ie_len, bool from_ap)
18098 {
18099         struct sk_buff *msg;
18100         void *hdr;
18101
18102         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18103         if (!msg)
18104                 return;
18105
18106         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18107         if (!hdr) {
18108                 nlmsg_free(msg);
18109                 return;
18110         }
18111
18112         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18113             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18114             (reason &&
18115              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18116             (from_ap &&
18117              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18118             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18119                 goto nla_put_failure;
18120
18121         genlmsg_end(msg, hdr);
18122
18123         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18124                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18125         return;
18126
18127  nla_put_failure:
18128         nlmsg_free(msg);
18129 }
18130
18131 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18132                              struct net_device *netdev, const u8 *bssid,
18133                              gfp_t gfp)
18134 {
18135         struct sk_buff *msg;
18136         void *hdr;
18137
18138         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18139         if (!msg)
18140                 return;
18141
18142         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18143         if (!hdr) {
18144                 nlmsg_free(msg);
18145                 return;
18146         }
18147
18148         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18149             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18150             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18151                 goto nla_put_failure;
18152
18153         genlmsg_end(msg, hdr);
18154
18155         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18156                                 NL80211_MCGRP_MLME, gfp);
18157         return;
18158
18159  nla_put_failure:
18160         nlmsg_free(msg);
18161 }
18162
18163 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18164                                         const u8 *ie, u8 ie_len,
18165                                         int sig_dbm, gfp_t gfp)
18166 {
18167         struct wireless_dev *wdev = dev->ieee80211_ptr;
18168         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18169         struct sk_buff *msg;
18170         void *hdr;
18171
18172         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18173                 return;
18174
18175         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18176
18177         msg = nlmsg_new(100 + ie_len, gfp);
18178         if (!msg)
18179                 return;
18180
18181         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18182         if (!hdr) {
18183                 nlmsg_free(msg);
18184                 return;
18185         }
18186
18187         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18188             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18189             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18190             (ie_len && ie &&
18191              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18192             (sig_dbm &&
18193              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18194                 goto nla_put_failure;
18195
18196         genlmsg_end(msg, hdr);
18197
18198         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18199                                 NL80211_MCGRP_MLME, gfp);
18200         return;
18201
18202  nla_put_failure:
18203         nlmsg_free(msg);
18204 }
18205 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18206
18207 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18208                                  struct net_device *netdev, const u8 *addr,
18209                                  enum nl80211_key_type key_type, int key_id,
18210                                  const u8 *tsc, gfp_t gfp)
18211 {
18212         struct sk_buff *msg;
18213         void *hdr;
18214
18215         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18216         if (!msg)
18217                 return;
18218
18219         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18220         if (!hdr) {
18221                 nlmsg_free(msg);
18222                 return;
18223         }
18224
18225         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18226             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18227             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18228             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18229             (key_id != -1 &&
18230              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18231             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18232                 goto nla_put_failure;
18233
18234         genlmsg_end(msg, hdr);
18235
18236         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18237                                 NL80211_MCGRP_MLME, gfp);
18238         return;
18239
18240  nla_put_failure:
18241         nlmsg_free(msg);
18242 }
18243
18244 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18245                                     struct ieee80211_channel *channel_before,
18246                                     struct ieee80211_channel *channel_after)
18247 {
18248         struct sk_buff *msg;
18249         void *hdr;
18250         struct nlattr *nl_freq;
18251
18252         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18253         if (!msg)
18254                 return;
18255
18256         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18257         if (!hdr) {
18258                 nlmsg_free(msg);
18259                 return;
18260         }
18261
18262         /*
18263          * Since we are applying the beacon hint to a wiphy we know its
18264          * wiphy_idx is valid
18265          */
18266         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18267                 goto nla_put_failure;
18268
18269         /* Before */
18270         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18271         if (!nl_freq)
18272                 goto nla_put_failure;
18273
18274         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18275                 goto nla_put_failure;
18276         nla_nest_end(msg, nl_freq);
18277
18278         /* After */
18279         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18280         if (!nl_freq)
18281                 goto nla_put_failure;
18282
18283         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18284                 goto nla_put_failure;
18285         nla_nest_end(msg, nl_freq);
18286
18287         genlmsg_end(msg, hdr);
18288
18289         rcu_read_lock();
18290         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18291                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18292         rcu_read_unlock();
18293
18294         return;
18295
18296 nla_put_failure:
18297         nlmsg_free(msg);
18298 }
18299
18300 static void nl80211_send_remain_on_chan_event(
18301         int cmd, struct cfg80211_registered_device *rdev,
18302         struct wireless_dev *wdev, u64 cookie,
18303         struct ieee80211_channel *chan,
18304         unsigned int duration, gfp_t gfp)
18305 {
18306         struct sk_buff *msg;
18307         void *hdr;
18308
18309         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18310         if (!msg)
18311                 return;
18312
18313         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18314         if (!hdr) {
18315                 nlmsg_free(msg);
18316                 return;
18317         }
18318
18319         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18320             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18321                                          wdev->netdev->ifindex)) ||
18322             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18323                               NL80211_ATTR_PAD) ||
18324             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18325             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18326                         NL80211_CHAN_NO_HT) ||
18327             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18328                               NL80211_ATTR_PAD))
18329                 goto nla_put_failure;
18330
18331         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18332             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18333                 goto nla_put_failure;
18334
18335         genlmsg_end(msg, hdr);
18336
18337         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18338                                 NL80211_MCGRP_MLME, gfp);
18339         return;
18340
18341  nla_put_failure:
18342         nlmsg_free(msg);
18343 }
18344
18345 void cfg80211_assoc_comeback(struct net_device *netdev,
18346                              const u8 *ap_addr, u32 timeout)
18347 {
18348         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18349         struct wiphy *wiphy = wdev->wiphy;
18350         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18351         struct sk_buff *msg;
18352         void *hdr;
18353
18354         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18355
18356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18357         if (!msg)
18358                 return;
18359
18360         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18361         if (!hdr) {
18362                 nlmsg_free(msg);
18363                 return;
18364         }
18365
18366         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18367             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18368             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18369             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18370                 goto nla_put_failure;
18371
18372         genlmsg_end(msg, hdr);
18373
18374         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18375                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18376         return;
18377
18378  nla_put_failure:
18379         nlmsg_free(msg);
18380 }
18381 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18382
18383 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18384                                struct ieee80211_channel *chan,
18385                                unsigned int duration, gfp_t gfp)
18386 {
18387         struct wiphy *wiphy = wdev->wiphy;
18388         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18389
18390         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18391         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18392                                           rdev, wdev, cookie, chan,
18393                                           duration, gfp);
18394 }
18395 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18396
18397 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18398                                         struct ieee80211_channel *chan,
18399                                         gfp_t gfp)
18400 {
18401         struct wiphy *wiphy = wdev->wiphy;
18402         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18403
18404         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18405         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18406                                           rdev, wdev, cookie, chan, 0, gfp);
18407 }
18408 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18409
18410 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18411                                         struct ieee80211_channel *chan,
18412                                         gfp_t gfp)
18413 {
18414         struct wiphy *wiphy = wdev->wiphy;
18415         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18416
18417         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18418         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18419                                           rdev, wdev, cookie, chan, 0, gfp);
18420 }
18421 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18422
18423 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18424                       struct station_info *sinfo, gfp_t gfp)
18425 {
18426         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18427         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18428         struct sk_buff *msg;
18429
18430         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18431
18432         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18433         if (!msg)
18434                 return;
18435
18436         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18437                                  rdev, dev, mac_addr, sinfo) < 0) {
18438                 nlmsg_free(msg);
18439                 return;
18440         }
18441
18442         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18443                                 NL80211_MCGRP_MLME, gfp);
18444 }
18445 EXPORT_SYMBOL(cfg80211_new_sta);
18446
18447 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18448                             struct station_info *sinfo, gfp_t gfp)
18449 {
18450         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18451         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18452         struct sk_buff *msg;
18453         struct station_info empty_sinfo = {};
18454
18455         if (!sinfo)
18456                 sinfo = &empty_sinfo;
18457
18458         trace_cfg80211_del_sta(dev, mac_addr);
18459
18460         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18461         if (!msg) {
18462                 cfg80211_sinfo_release_content(sinfo);
18463                 return;
18464         }
18465
18466         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18467                                  rdev, dev, mac_addr, sinfo) < 0) {
18468                 nlmsg_free(msg);
18469                 return;
18470         }
18471
18472         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18473                                 NL80211_MCGRP_MLME, gfp);
18474 }
18475 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18476
18477 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18478                           enum nl80211_connect_failed_reason reason,
18479                           gfp_t gfp)
18480 {
18481         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18482         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18483         struct sk_buff *msg;
18484         void *hdr;
18485
18486         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18487         if (!msg)
18488                 return;
18489
18490         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18491         if (!hdr) {
18492                 nlmsg_free(msg);
18493                 return;
18494         }
18495
18496         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18497             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18498             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18499                 goto nla_put_failure;
18500
18501         genlmsg_end(msg, hdr);
18502
18503         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18504                                 NL80211_MCGRP_MLME, gfp);
18505         return;
18506
18507  nla_put_failure:
18508         nlmsg_free(msg);
18509 }
18510 EXPORT_SYMBOL(cfg80211_conn_failed);
18511
18512 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18513                                        const u8 *addr, gfp_t gfp)
18514 {
18515         struct wireless_dev *wdev = dev->ieee80211_ptr;
18516         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18517         struct sk_buff *msg;
18518         void *hdr;
18519         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18520
18521         if (!nlportid)
18522                 return false;
18523
18524         msg = nlmsg_new(100, gfp);
18525         if (!msg)
18526                 return true;
18527
18528         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18529         if (!hdr) {
18530                 nlmsg_free(msg);
18531                 return true;
18532         }
18533
18534         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18535             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18536             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18537                 goto nla_put_failure;
18538
18539         genlmsg_end(msg, hdr);
18540         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18541         return true;
18542
18543  nla_put_failure:
18544         nlmsg_free(msg);
18545         return true;
18546 }
18547
18548 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18549                                 const u8 *addr, gfp_t gfp)
18550 {
18551         struct wireless_dev *wdev = dev->ieee80211_ptr;
18552         bool ret;
18553
18554         trace_cfg80211_rx_spurious_frame(dev, addr);
18555
18556         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18557                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18558                 trace_cfg80211_return_bool(false);
18559                 return false;
18560         }
18561         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18562                                          addr, gfp);
18563         trace_cfg80211_return_bool(ret);
18564         return ret;
18565 }
18566 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18567
18568 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18569                                         const u8 *addr, gfp_t gfp)
18570 {
18571         struct wireless_dev *wdev = dev->ieee80211_ptr;
18572         bool ret;
18573
18574         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18575
18576         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18577                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18578                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18579                 trace_cfg80211_return_bool(false);
18580                 return false;
18581         }
18582         ret = __nl80211_unexpected_frame(dev,
18583                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18584                                          addr, gfp);
18585         trace_cfg80211_return_bool(ret);
18586         return ret;
18587 }
18588 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18589
18590 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18591                       struct wireless_dev *wdev, u32 nlportid,
18592                       struct cfg80211_rx_info *info, gfp_t gfp)
18593 {
18594         struct net_device *netdev = wdev->netdev;
18595         struct sk_buff *msg;
18596         void *hdr;
18597
18598         msg = nlmsg_new(100 + info->len, gfp);
18599         if (!msg)
18600                 return -ENOMEM;
18601
18602         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18603         if (!hdr) {
18604                 nlmsg_free(msg);
18605                 return -ENOMEM;
18606         }
18607
18608         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18609             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18610                                         netdev->ifindex)) ||
18611             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18612                               NL80211_ATTR_PAD) ||
18613             (info->have_link_id &&
18614              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18615             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18616             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18617             (info->sig_dbm &&
18618              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18619             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18620             (info->flags &&
18621              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18622             (info->rx_tstamp && nla_put_u64_64bit(msg,
18623                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18624                                                   info->rx_tstamp,
18625                                                   NL80211_ATTR_PAD)) ||
18626             (info->ack_tstamp && nla_put_u64_64bit(msg,
18627                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18628                                                    info->ack_tstamp,
18629                                                    NL80211_ATTR_PAD)))
18630                 goto nla_put_failure;
18631
18632         genlmsg_end(msg, hdr);
18633
18634         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18635
18636  nla_put_failure:
18637         nlmsg_free(msg);
18638         return -ENOBUFS;
18639 }
18640
18641 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18642                                     struct cfg80211_tx_status *status,
18643                                     gfp_t gfp, enum nl80211_commands command)
18644 {
18645         struct wiphy *wiphy = wdev->wiphy;
18646         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18647         struct net_device *netdev = wdev->netdev;
18648         struct sk_buff *msg;
18649         void *hdr;
18650
18651         if (command == NL80211_CMD_FRAME_TX_STATUS)
18652                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18653                                               status->ack);
18654         else
18655                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18656                                                       status->ack);
18657
18658         msg = nlmsg_new(100 + status->len, gfp);
18659         if (!msg)
18660                 return;
18661
18662         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18663         if (!hdr) {
18664                 nlmsg_free(msg);
18665                 return;
18666         }
18667
18668         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18669             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18670                                    netdev->ifindex)) ||
18671             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18672                               NL80211_ATTR_PAD) ||
18673             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18674             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18675                               NL80211_ATTR_PAD) ||
18676             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18677             (status->tx_tstamp &&
18678              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18679                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18680             (status->ack_tstamp &&
18681              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18682                                status->ack_tstamp, NL80211_ATTR_PAD)))
18683                 goto nla_put_failure;
18684
18685         genlmsg_end(msg, hdr);
18686
18687         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18688                                 NL80211_MCGRP_MLME, gfp);
18689         return;
18690
18691 nla_put_failure:
18692         nlmsg_free(msg);
18693 }
18694
18695 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18696                                      const u8 *buf, size_t len, bool ack,
18697                                      gfp_t gfp)
18698 {
18699         struct cfg80211_tx_status status = {
18700                 .cookie = cookie,
18701                 .buf = buf,
18702                 .len = len,
18703                 .ack = ack
18704         };
18705
18706         nl80211_frame_tx_status(wdev, &status, gfp,
18707                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18708 }
18709 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18710
18711 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18712                                  struct cfg80211_tx_status *status, gfp_t gfp)
18713 {
18714         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18715 }
18716 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18717
18718 static int __nl80211_rx_control_port(struct net_device *dev,
18719                                      struct sk_buff *skb,
18720                                      bool unencrypted, gfp_t gfp)
18721 {
18722         struct wireless_dev *wdev = dev->ieee80211_ptr;
18723         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18724         struct ethhdr *ehdr = eth_hdr(skb);
18725         const u8 *addr = ehdr->h_source;
18726         u16 proto = be16_to_cpu(skb->protocol);
18727         struct sk_buff *msg;
18728         void *hdr;
18729         struct nlattr *frame;
18730
18731         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18732
18733         if (!nlportid)
18734                 return -ENOENT;
18735
18736         msg = nlmsg_new(100 + skb->len, gfp);
18737         if (!msg)
18738                 return -ENOMEM;
18739
18740         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18741         if (!hdr) {
18742                 nlmsg_free(msg);
18743                 return -ENOBUFS;
18744         }
18745
18746         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18747             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18748             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18749                               NL80211_ATTR_PAD) ||
18750             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18751             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18752             (unencrypted && nla_put_flag(msg,
18753                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18754                 goto nla_put_failure;
18755
18756         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18757         if (!frame)
18758                 goto nla_put_failure;
18759
18760         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18761         genlmsg_end(msg, hdr);
18762
18763         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18764
18765  nla_put_failure:
18766         nlmsg_free(msg);
18767         return -ENOBUFS;
18768 }
18769
18770 bool cfg80211_rx_control_port(struct net_device *dev,
18771                               struct sk_buff *skb, bool unencrypted)
18772 {
18773         int ret;
18774
18775         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
18776         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
18777         trace_cfg80211_return_bool(ret == 0);
18778         return ret == 0;
18779 }
18780 EXPORT_SYMBOL(cfg80211_rx_control_port);
18781
18782 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
18783                                             const char *mac, gfp_t gfp)
18784 {
18785         struct wireless_dev *wdev = dev->ieee80211_ptr;
18786         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18787         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18788         void **cb;
18789
18790         if (!msg)
18791                 return NULL;
18792
18793         cb = (void **)msg->cb;
18794
18795         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
18796         if (!cb[0]) {
18797                 nlmsg_free(msg);
18798                 return NULL;
18799         }
18800
18801         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18802             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18803                 goto nla_put_failure;
18804
18805         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
18806                 goto nla_put_failure;
18807
18808         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
18809         if (!cb[1])
18810                 goto nla_put_failure;
18811
18812         cb[2] = rdev;
18813
18814         return msg;
18815  nla_put_failure:
18816         nlmsg_free(msg);
18817         return NULL;
18818 }
18819
18820 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
18821 {
18822         void **cb = (void **)msg->cb;
18823         struct cfg80211_registered_device *rdev = cb[2];
18824
18825         nla_nest_end(msg, cb[1]);
18826         genlmsg_end(msg, cb[0]);
18827
18828         memset(msg->cb, 0, sizeof(msg->cb));
18829
18830         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18831                                 NL80211_MCGRP_MLME, gfp);
18832 }
18833
18834 void cfg80211_cqm_rssi_notify(struct net_device *dev,
18835                               enum nl80211_cqm_rssi_threshold_event rssi_event,
18836                               s32 rssi_level, gfp_t gfp)
18837 {
18838         struct sk_buff *msg;
18839         struct wireless_dev *wdev = dev->ieee80211_ptr;
18840         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18841
18842         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
18843
18844         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
18845                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
18846                 return;
18847
18848         if (wdev->cqm_config) {
18849                 wdev->cqm_config->last_rssi_event_value = rssi_level;
18850
18851                 cfg80211_cqm_rssi_update(rdev, dev);
18852
18853                 if (rssi_level == 0)
18854                         rssi_level = wdev->cqm_config->last_rssi_event_value;
18855         }
18856
18857         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18858         if (!msg)
18859                 return;
18860
18861         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
18862                         rssi_event))
18863                 goto nla_put_failure;
18864
18865         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
18866                                       rssi_level))
18867                 goto nla_put_failure;
18868
18869         cfg80211_send_cqm(msg, gfp);
18870
18871         return;
18872
18873  nla_put_failure:
18874         nlmsg_free(msg);
18875 }
18876 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
18877
18878 void cfg80211_cqm_txe_notify(struct net_device *dev,
18879                              const u8 *peer, u32 num_packets,
18880                              u32 rate, u32 intvl, gfp_t gfp)
18881 {
18882         struct sk_buff *msg;
18883
18884         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18885         if (!msg)
18886                 return;
18887
18888         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
18889                 goto nla_put_failure;
18890
18891         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
18892                 goto nla_put_failure;
18893
18894         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
18895                 goto nla_put_failure;
18896
18897         cfg80211_send_cqm(msg, gfp);
18898         return;
18899
18900  nla_put_failure:
18901         nlmsg_free(msg);
18902 }
18903 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
18904
18905 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
18906                                  const u8 *peer, u32 num_packets, gfp_t gfp)
18907 {
18908         struct sk_buff *msg;
18909
18910         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
18911
18912         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18913         if (!msg)
18914                 return;
18915
18916         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
18917                 goto nla_put_failure;
18918
18919         cfg80211_send_cqm(msg, gfp);
18920         return;
18921
18922  nla_put_failure:
18923         nlmsg_free(msg);
18924 }
18925 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
18926
18927 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
18928 {
18929         struct sk_buff *msg;
18930
18931         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18932         if (!msg)
18933                 return;
18934
18935         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
18936                 goto nla_put_failure;
18937
18938         cfg80211_send_cqm(msg, gfp);
18939         return;
18940
18941  nla_put_failure:
18942         nlmsg_free(msg);
18943 }
18944 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
18945
18946 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
18947                                      struct net_device *netdev, const u8 *bssid,
18948                                      const u8 *replay_ctr, gfp_t gfp)
18949 {
18950         struct sk_buff *msg;
18951         struct nlattr *rekey_attr;
18952         void *hdr;
18953
18954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18955         if (!msg)
18956                 return;
18957
18958         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
18959         if (!hdr) {
18960                 nlmsg_free(msg);
18961                 return;
18962         }
18963
18964         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18965             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18966             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18967                 goto nla_put_failure;
18968
18969         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
18970         if (!rekey_attr)
18971                 goto nla_put_failure;
18972
18973         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
18974                     NL80211_REPLAY_CTR_LEN, replay_ctr))
18975                 goto nla_put_failure;
18976
18977         nla_nest_end(msg, rekey_attr);
18978
18979         genlmsg_end(msg, hdr);
18980
18981         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18982                                 NL80211_MCGRP_MLME, gfp);
18983         return;
18984
18985  nla_put_failure:
18986         nlmsg_free(msg);
18987 }
18988
18989 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
18990                                const u8 *replay_ctr, gfp_t gfp)
18991 {
18992         struct wireless_dev *wdev = dev->ieee80211_ptr;
18993         struct wiphy *wiphy = wdev->wiphy;
18994         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18995
18996         trace_cfg80211_gtk_rekey_notify(dev, bssid);
18997         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
18998 }
18999 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19000
19001 static void
19002 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19003                                struct net_device *netdev, int index,
19004                                const u8 *bssid, bool preauth, gfp_t gfp)
19005 {
19006         struct sk_buff *msg;
19007         struct nlattr *attr;
19008         void *hdr;
19009
19010         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19011         if (!msg)
19012                 return;
19013
19014         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19015         if (!hdr) {
19016                 nlmsg_free(msg);
19017                 return;
19018         }
19019
19020         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19021             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19022                 goto nla_put_failure;
19023
19024         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19025         if (!attr)
19026                 goto nla_put_failure;
19027
19028         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19029             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19030             (preauth &&
19031              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19032                 goto nla_put_failure;
19033
19034         nla_nest_end(msg, attr);
19035
19036         genlmsg_end(msg, hdr);
19037
19038         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19039                                 NL80211_MCGRP_MLME, gfp);
19040         return;
19041
19042  nla_put_failure:
19043         nlmsg_free(msg);
19044 }
19045
19046 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19047                                      const u8 *bssid, bool preauth, gfp_t gfp)
19048 {
19049         struct wireless_dev *wdev = dev->ieee80211_ptr;
19050         struct wiphy *wiphy = wdev->wiphy;
19051         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19052
19053         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19054         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19055 }
19056 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19057
19058 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19059                                      struct net_device *netdev,
19060                                      unsigned int link_id,
19061                                      struct cfg80211_chan_def *chandef,
19062                                      gfp_t gfp,
19063                                      enum nl80211_commands notif,
19064                                      u8 count, bool quiet, u16 punct_bitmap)
19065 {
19066         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19067         struct sk_buff *msg;
19068         void *hdr;
19069
19070         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19071         if (!msg)
19072                 return;
19073
19074         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19075         if (!hdr) {
19076                 nlmsg_free(msg);
19077                 return;
19078         }
19079
19080         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19081                 goto nla_put_failure;
19082
19083         if (wdev->valid_links &&
19084             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19085                 goto nla_put_failure;
19086
19087         if (nl80211_send_chandef(msg, chandef))
19088                 goto nla_put_failure;
19089
19090         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19091                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19092                         goto nla_put_failure;
19093                 if (quiet &&
19094                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19095                         goto nla_put_failure;
19096         }
19097
19098         if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19099                 goto nla_put_failure;
19100
19101         genlmsg_end(msg, hdr);
19102
19103         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19104                                 NL80211_MCGRP_MLME, gfp);
19105         return;
19106
19107  nla_put_failure:
19108         nlmsg_free(msg);
19109 }
19110
19111 void cfg80211_ch_switch_notify(struct net_device *dev,
19112                                struct cfg80211_chan_def *chandef,
19113                                unsigned int link_id, u16 punct_bitmap)
19114 {
19115         struct wireless_dev *wdev = dev->ieee80211_ptr;
19116         struct wiphy *wiphy = wdev->wiphy;
19117         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19118
19119         ASSERT_WDEV_LOCK(wdev);
19120         WARN_INVALID_LINK_ID(wdev, link_id);
19121
19122         trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19123
19124         switch (wdev->iftype) {
19125         case NL80211_IFTYPE_STATION:
19126         case NL80211_IFTYPE_P2P_CLIENT:
19127                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19128                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19129                                                         chandef->chan);
19130                 break;
19131         case NL80211_IFTYPE_MESH_POINT:
19132                 wdev->u.mesh.chandef = *chandef;
19133                 wdev->u.mesh.preset_chandef = *chandef;
19134                 break;
19135         case NL80211_IFTYPE_AP:
19136         case NL80211_IFTYPE_P2P_GO:
19137                 wdev->links[link_id].ap.chandef = *chandef;
19138                 break;
19139         case NL80211_IFTYPE_ADHOC:
19140                 wdev->u.ibss.chandef = *chandef;
19141                 break;
19142         default:
19143                 WARN_ON(1);
19144                 break;
19145         }
19146
19147         cfg80211_sched_dfs_chan_update(rdev);
19148
19149         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19150                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19151                                  punct_bitmap);
19152 }
19153 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19154
19155 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19156                                        struct cfg80211_chan_def *chandef,
19157                                        unsigned int link_id, u8 count,
19158                                        bool quiet, u16 punct_bitmap)
19159 {
19160         struct wireless_dev *wdev = dev->ieee80211_ptr;
19161         struct wiphy *wiphy = wdev->wiphy;
19162         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19163
19164         ASSERT_WDEV_LOCK(wdev);
19165         WARN_INVALID_LINK_ID(wdev, link_id);
19166
19167         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19168                                                 punct_bitmap);
19169
19170
19171         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19172                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19173                                  count, quiet, punct_bitmap);
19174 }
19175 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19176
19177 int cfg80211_bss_color_notify(struct net_device *dev,
19178                               enum nl80211_commands cmd, u8 count,
19179                               u64 color_bitmap)
19180 {
19181         struct wireless_dev *wdev = dev->ieee80211_ptr;
19182         struct wiphy *wiphy = wdev->wiphy;
19183         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19184         struct sk_buff *msg;
19185         void *hdr;
19186
19187         ASSERT_WDEV_LOCK(wdev);
19188
19189         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19190
19191         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19192         if (!msg)
19193                 return -ENOMEM;
19194
19195         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19196         if (!hdr)
19197                 goto nla_put_failure;
19198
19199         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19200                 goto nla_put_failure;
19201
19202         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19203             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19204                 goto nla_put_failure;
19205
19206         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19207             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19208                               color_bitmap, NL80211_ATTR_PAD))
19209                 goto nla_put_failure;
19210
19211         genlmsg_end(msg, hdr);
19212
19213         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19214                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19215
19216 nla_put_failure:
19217         nlmsg_free(msg);
19218         return -EINVAL;
19219 }
19220 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19221
19222 void
19223 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19224                      const struct cfg80211_chan_def *chandef,
19225                      enum nl80211_radar_event event,
19226                      struct net_device *netdev, gfp_t gfp)
19227 {
19228         struct sk_buff *msg;
19229         void *hdr;
19230
19231         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19232         if (!msg)
19233                 return;
19234
19235         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19236         if (!hdr) {
19237                 nlmsg_free(msg);
19238                 return;
19239         }
19240
19241         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19242                 goto nla_put_failure;
19243
19244         /* NOP and radar events don't need a netdev parameter */
19245         if (netdev) {
19246                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19247
19248                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19249                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19250                                       NL80211_ATTR_PAD))
19251                         goto nla_put_failure;
19252         }
19253
19254         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19255                 goto nla_put_failure;
19256
19257         if (nl80211_send_chandef(msg, chandef))
19258                 goto nla_put_failure;
19259
19260         genlmsg_end(msg, hdr);
19261
19262         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19263                                 NL80211_MCGRP_MLME, gfp);
19264         return;
19265
19266  nla_put_failure:
19267         nlmsg_free(msg);
19268 }
19269
19270 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19271                                        struct sta_opmode_info *sta_opmode,
19272                                        gfp_t gfp)
19273 {
19274         struct sk_buff *msg;
19275         struct wireless_dev *wdev = dev->ieee80211_ptr;
19276         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19277         void *hdr;
19278
19279         if (WARN_ON(!mac))
19280                 return;
19281
19282         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19283         if (!msg)
19284                 return;
19285
19286         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19287         if (!hdr) {
19288                 nlmsg_free(msg);
19289                 return;
19290         }
19291
19292         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19293                 goto nla_put_failure;
19294
19295         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19296                 goto nla_put_failure;
19297
19298         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19299                 goto nla_put_failure;
19300
19301         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19302             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19303                 goto nla_put_failure;
19304
19305         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19306             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19307                 goto nla_put_failure;
19308
19309         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19310             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19311                 goto nla_put_failure;
19312
19313         genlmsg_end(msg, hdr);
19314
19315         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19316                                 NL80211_MCGRP_MLME, gfp);
19317
19318         return;
19319
19320 nla_put_failure:
19321         nlmsg_free(msg);
19322 }
19323 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19324
19325 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19326                            u64 cookie, bool acked, s32 ack_signal,
19327                            bool is_valid_ack_signal, gfp_t gfp)
19328 {
19329         struct wireless_dev *wdev = dev->ieee80211_ptr;
19330         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19331         struct sk_buff *msg;
19332         void *hdr;
19333
19334         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19335
19336         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19337
19338         if (!msg)
19339                 return;
19340
19341         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19342         if (!hdr) {
19343                 nlmsg_free(msg);
19344                 return;
19345         }
19346
19347         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19348             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19349             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19350             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19351                               NL80211_ATTR_PAD) ||
19352             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19353             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19354                                                 ack_signal)))
19355                 goto nla_put_failure;
19356
19357         genlmsg_end(msg, hdr);
19358
19359         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19360                                 NL80211_MCGRP_MLME, gfp);
19361         return;
19362
19363  nla_put_failure:
19364         nlmsg_free(msg);
19365 }
19366 EXPORT_SYMBOL(cfg80211_probe_status);
19367
19368 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19369                                      size_t len, int freq, int sig_dbm)
19370 {
19371         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19372         struct sk_buff *msg;
19373         void *hdr;
19374         struct cfg80211_beacon_registration *reg;
19375
19376         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19377
19378         spin_lock_bh(&rdev->beacon_registrations_lock);
19379         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19380                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19381                 if (!msg) {
19382                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19383                         return;
19384                 }
19385
19386                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19387                 if (!hdr)
19388                         goto nla_put_failure;
19389
19390                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19391                     (freq &&
19392                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19393                                   KHZ_TO_MHZ(freq)) ||
19394                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19395                                   freq % 1000))) ||
19396                     (sig_dbm &&
19397                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19398                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19399                         goto nla_put_failure;
19400
19401                 genlmsg_end(msg, hdr);
19402
19403                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19404         }
19405         spin_unlock_bh(&rdev->beacon_registrations_lock);
19406         return;
19407
19408  nla_put_failure:
19409         spin_unlock_bh(&rdev->beacon_registrations_lock);
19410         nlmsg_free(msg);
19411 }
19412 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19413
19414 #ifdef CONFIG_PM
19415 static int cfg80211_net_detect_results(struct sk_buff *msg,
19416                                        struct cfg80211_wowlan_wakeup *wakeup)
19417 {
19418         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19419         struct nlattr *nl_results, *nl_match, *nl_freqs;
19420         int i, j;
19421
19422         nl_results = nla_nest_start_noflag(msg,
19423                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19424         if (!nl_results)
19425                 return -EMSGSIZE;
19426
19427         for (i = 0; i < nd->n_matches; i++) {
19428                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19429
19430                 nl_match = nla_nest_start_noflag(msg, i);
19431                 if (!nl_match)
19432                         break;
19433
19434                 /* The SSID attribute is optional in nl80211, but for
19435                  * simplicity reasons it's always present in the
19436                  * cfg80211 structure.  If a driver can't pass the
19437                  * SSID, that needs to be changed.  A zero length SSID
19438                  * is still a valid SSID (wildcard), so it cannot be
19439                  * used for this purpose.
19440                  */
19441                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19442                             match->ssid.ssid)) {
19443                         nla_nest_cancel(msg, nl_match);
19444                         goto out;
19445                 }
19446
19447                 if (match->n_channels) {
19448                         nl_freqs = nla_nest_start_noflag(msg,
19449                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19450                         if (!nl_freqs) {
19451                                 nla_nest_cancel(msg, nl_match);
19452                                 goto out;
19453                         }
19454
19455                         for (j = 0; j < match->n_channels; j++) {
19456                                 if (nla_put_u32(msg, j, match->channels[j])) {
19457                                         nla_nest_cancel(msg, nl_freqs);
19458                                         nla_nest_cancel(msg, nl_match);
19459                                         goto out;
19460                                 }
19461                         }
19462
19463                         nla_nest_end(msg, nl_freqs);
19464                 }
19465
19466                 nla_nest_end(msg, nl_match);
19467         }
19468
19469 out:
19470         nla_nest_end(msg, nl_results);
19471         return 0;
19472 }
19473
19474 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19475                                    struct cfg80211_wowlan_wakeup *wakeup,
19476                                    gfp_t gfp)
19477 {
19478         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19479         struct sk_buff *msg;
19480         void *hdr;
19481         int size = 200;
19482
19483         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19484
19485         if (wakeup)
19486                 size += wakeup->packet_present_len;
19487
19488         msg = nlmsg_new(size, gfp);
19489         if (!msg)
19490                 return;
19491
19492         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19493         if (!hdr)
19494                 goto free_msg;
19495
19496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19497             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19498                               NL80211_ATTR_PAD))
19499                 goto free_msg;
19500
19501         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19502                                         wdev->netdev->ifindex))
19503                 goto free_msg;
19504
19505         if (wakeup) {
19506                 struct nlattr *reasons;
19507
19508                 reasons = nla_nest_start_noflag(msg,
19509                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19510                 if (!reasons)
19511                         goto free_msg;
19512
19513                 if (wakeup->disconnect &&
19514                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19515                         goto free_msg;
19516                 if (wakeup->magic_pkt &&
19517                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19518                         goto free_msg;
19519                 if (wakeup->gtk_rekey_failure &&
19520                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19521                         goto free_msg;
19522                 if (wakeup->eap_identity_req &&
19523                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19524                         goto free_msg;
19525                 if (wakeup->four_way_handshake &&
19526                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19527                         goto free_msg;
19528                 if (wakeup->rfkill_release &&
19529                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19530                         goto free_msg;
19531
19532                 if (wakeup->pattern_idx >= 0 &&
19533                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19534                                 wakeup->pattern_idx))
19535                         goto free_msg;
19536
19537                 if (wakeup->tcp_match &&
19538                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19539                         goto free_msg;
19540
19541                 if (wakeup->tcp_connlost &&
19542                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19543                         goto free_msg;
19544
19545                 if (wakeup->tcp_nomoretokens &&
19546                     nla_put_flag(msg,
19547                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19548                         goto free_msg;
19549
19550                 if (wakeup->packet) {
19551                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19552                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19553
19554                         if (!wakeup->packet_80211) {
19555                                 pkt_attr =
19556                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19557                                 len_attr =
19558                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19559                         }
19560
19561                         if (wakeup->packet_len &&
19562                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19563                                 goto free_msg;
19564
19565                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19566                                     wakeup->packet))
19567                                 goto free_msg;
19568                 }
19569
19570                 if (wakeup->net_detect &&
19571                     cfg80211_net_detect_results(msg, wakeup))
19572                                 goto free_msg;
19573
19574                 nla_nest_end(msg, reasons);
19575         }
19576
19577         genlmsg_end(msg, hdr);
19578
19579         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19580                                 NL80211_MCGRP_MLME, gfp);
19581         return;
19582
19583  free_msg:
19584         nlmsg_free(msg);
19585 }
19586 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19587 #endif
19588
19589 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19590                                 enum nl80211_tdls_operation oper,
19591                                 u16 reason_code, gfp_t gfp)
19592 {
19593         struct wireless_dev *wdev = dev->ieee80211_ptr;
19594         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19595         struct sk_buff *msg;
19596         void *hdr;
19597
19598         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19599                                          reason_code);
19600
19601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19602         if (!msg)
19603                 return;
19604
19605         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19606         if (!hdr) {
19607                 nlmsg_free(msg);
19608                 return;
19609         }
19610
19611         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19612             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19613             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19614             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19615             (reason_code > 0 &&
19616              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19617                 goto nla_put_failure;
19618
19619         genlmsg_end(msg, hdr);
19620
19621         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19622                                 NL80211_MCGRP_MLME, gfp);
19623         return;
19624
19625  nla_put_failure:
19626         nlmsg_free(msg);
19627 }
19628 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19629
19630 static int nl80211_netlink_notify(struct notifier_block * nb,
19631                                   unsigned long state,
19632                                   void *_notify)
19633 {
19634         struct netlink_notify *notify = _notify;
19635         struct cfg80211_registered_device *rdev;
19636         struct wireless_dev *wdev;
19637         struct cfg80211_beacon_registration *reg, *tmp;
19638
19639         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19640                 return NOTIFY_DONE;
19641
19642         rcu_read_lock();
19643
19644         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19645                 struct cfg80211_sched_scan_request *sched_scan_req;
19646
19647                 list_for_each_entry_rcu(sched_scan_req,
19648                                         &rdev->sched_scan_req_list,
19649                                         list) {
19650                         if (sched_scan_req->owner_nlportid == notify->portid) {
19651                                 sched_scan_req->nl_owner_dead = true;
19652                                 schedule_work(&rdev->sched_scan_stop_wk);
19653                         }
19654                 }
19655
19656                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19657                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19658
19659                         if (wdev->owner_nlportid == notify->portid) {
19660                                 wdev->nl_owner_dead = true;
19661                                 schedule_work(&rdev->destroy_work);
19662                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19663                                 schedule_work(&wdev->disconnect_wk);
19664                         }
19665
19666                         cfg80211_release_pmsr(wdev, notify->portid);
19667                 }
19668
19669                 spin_lock_bh(&rdev->beacon_registrations_lock);
19670                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19671                                          list) {
19672                         if (reg->nlportid == notify->portid) {
19673                                 list_del(&reg->list);
19674                                 kfree(reg);
19675                                 break;
19676                         }
19677                 }
19678                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19679         }
19680
19681         rcu_read_unlock();
19682
19683         /*
19684          * It is possible that the user space process that is controlling the
19685          * indoor setting disappeared, so notify the regulatory core.
19686          */
19687         regulatory_netlink_notify(notify->portid);
19688         return NOTIFY_OK;
19689 }
19690
19691 static struct notifier_block nl80211_netlink_notifier = {
19692         .notifier_call = nl80211_netlink_notify,
19693 };
19694
19695 void cfg80211_ft_event(struct net_device *netdev,
19696                        struct cfg80211_ft_event_params *ft_event)
19697 {
19698         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19699         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19700         struct sk_buff *msg;
19701         void *hdr;
19702
19703         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19704
19705         if (!ft_event->target_ap)
19706                 return;
19707
19708         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19709                         GFP_KERNEL);
19710         if (!msg)
19711                 return;
19712
19713         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19714         if (!hdr)
19715                 goto out;
19716
19717         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19718             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19719             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19720                 goto out;
19721
19722         if (ft_event->ies &&
19723             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19724                 goto out;
19725         if (ft_event->ric_ies &&
19726             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19727                     ft_event->ric_ies))
19728                 goto out;
19729
19730         genlmsg_end(msg, hdr);
19731
19732         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19733                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19734         return;
19735  out:
19736         nlmsg_free(msg);
19737 }
19738 EXPORT_SYMBOL(cfg80211_ft_event);
19739
19740 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19741 {
19742         struct cfg80211_registered_device *rdev;
19743         struct sk_buff *msg;
19744         void *hdr;
19745         u32 nlportid;
19746
19747         rdev = wiphy_to_rdev(wdev->wiphy);
19748         if (!rdev->crit_proto_nlportid)
19749                 return;
19750
19751         nlportid = rdev->crit_proto_nlportid;
19752         rdev->crit_proto_nlportid = 0;
19753
19754         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19755         if (!msg)
19756                 return;
19757
19758         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19759         if (!hdr)
19760                 goto nla_put_failure;
19761
19762         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19763             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19764                               NL80211_ATTR_PAD))
19765                 goto nla_put_failure;
19766
19767         genlmsg_end(msg, hdr);
19768
19769         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19770         return;
19771
19772  nla_put_failure:
19773         nlmsg_free(msg);
19774 }
19775 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
19776
19777 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
19778 {
19779         struct wiphy *wiphy = wdev->wiphy;
19780         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19781         struct sk_buff *msg;
19782         void *hdr;
19783
19784         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19785         if (!msg)
19786                 return;
19787
19788         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
19789         if (!hdr)
19790                 goto out;
19791
19792         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19793             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
19794             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19795                               NL80211_ATTR_PAD) ||
19796             (wdev->valid_links &&
19797              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
19798                 goto out;
19799
19800         genlmsg_end(msg, hdr);
19801
19802         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
19803                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19804         return;
19805  out:
19806         nlmsg_free(msg);
19807 }
19808
19809 int cfg80211_external_auth_request(struct net_device *dev,
19810                                    struct cfg80211_external_auth_params *params,
19811                                    gfp_t gfp)
19812 {
19813         struct wireless_dev *wdev = dev->ieee80211_ptr;
19814         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19815         struct sk_buff *msg;
19816         void *hdr;
19817
19818         if (!wdev->conn_owner_nlportid)
19819                 return -EINVAL;
19820
19821         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19822         if (!msg)
19823                 return -ENOMEM;
19824
19825         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
19826         if (!hdr)
19827                 goto nla_put_failure;
19828
19829         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19830             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19831             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
19832             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
19833                         params->action) ||
19834             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
19835             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
19836                     params->ssid.ssid) ||
19837             (!is_zero_ether_addr(params->mld_addr) &&
19838              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
19839                 goto nla_put_failure;
19840
19841         genlmsg_end(msg, hdr);
19842         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
19843                         wdev->conn_owner_nlportid);
19844         return 0;
19845
19846  nla_put_failure:
19847         nlmsg_free(msg);
19848         return -ENOBUFS;
19849 }
19850 EXPORT_SYMBOL(cfg80211_external_auth_request);
19851
19852 void cfg80211_update_owe_info_event(struct net_device *netdev,
19853                                     struct cfg80211_update_owe_info *owe_info,
19854                                     gfp_t gfp)
19855 {
19856         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19857         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19858         struct sk_buff *msg;
19859         void *hdr;
19860
19861         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
19862
19863         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19864         if (!msg)
19865                 return;
19866
19867         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
19868         if (!hdr)
19869                 goto nla_put_failure;
19870
19871         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19872             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19873             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
19874                 goto nla_put_failure;
19875
19876         if (!owe_info->ie_len ||
19877             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
19878                 goto nla_put_failure;
19879
19880         if (owe_info->assoc_link_id != -1) {
19881                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
19882                                owe_info->assoc_link_id))
19883                         goto nla_put_failure;
19884
19885                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
19886                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
19887                             owe_info->peer_mld_addr))
19888                         goto nla_put_failure;
19889         }
19890
19891         genlmsg_end(msg, hdr);
19892
19893         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19894                                 NL80211_MCGRP_MLME, gfp);
19895         return;
19896
19897 nla_put_failure:
19898         genlmsg_cancel(msg, hdr);
19899         nlmsg_free(msg);
19900 }
19901 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
19902
19903 /* initialisation/exit functions */
19904
19905 int __init nl80211_init(void)
19906 {
19907         int err;
19908
19909         err = genl_register_family(&nl80211_fam);
19910         if (err)
19911                 return err;
19912
19913         err = netlink_register_notifier(&nl80211_netlink_notifier);
19914         if (err)
19915                 goto err_out;
19916
19917         return 0;
19918  err_out:
19919         genl_unregister_family(&nl80211_fam);
19920         return err;
19921 }
19922
19923 void nl80211_exit(void)
19924 {
19925         netlink_unregister_notifier(&nl80211_netlink_notifier);
19926         genl_unregister_family(&nl80211_fam);
19927 }