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 };
 809
 810 /* policy for the key attributes */
 811 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 812         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 813         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 814         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 815         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 816         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 817         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 818         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 819         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 820         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 821 };
 822
 823 /* policy for the key default flags */
 824 static const struct nla_policy
 825 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 826         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 827         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 828 };
 829
 830 #ifdef CONFIG_PM
 831 /* policy for WoWLAN attributes */
 832 static const struct nla_policy
 833 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 834         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 835         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 836         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 837         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 838         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 839         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 840         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 841         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 842         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 843         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 844 };
 845
 846 static const struct nla_policy
 847 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 848         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 849         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 850         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 851         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 852         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 853         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 854         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 855                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 856         },
 857         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 858                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 859         },
 860         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 861         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 862         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 863 };
 864 #endif /* CONFIG_PM */
 865
 866 /* policy for coalesce rule attributes */
 867 static const struct nla_policy
 868 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 869         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 870         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 871                 NLA_POLICY_RANGE(NLA_U32,
 872                                  NL80211_COALESCE_CONDITION_MATCH,
 873                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 874         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 875 };
 876
 877 /* policy for GTK rekey offload attributes */
 878 static const struct nla_policy
 879 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 880         [NL80211_REKEY_DATA_KEK] = {
 881                 .type = NLA_BINARY,
 882                 .len = NL80211_KEK_EXT_LEN
 883         },
 884         [NL80211_REKEY_DATA_KCK] = {
 885                 .type = NLA_BINARY,
 886                 .len = NL80211_KCK_EXT_LEN
 887         },
 888         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 889         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 890 };
 891
 892 static const struct nla_policy
 893 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 894         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 895         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 896         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 897         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 898         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 899 };
 900
 901 static const struct nla_policy
 902 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 903         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 904                                                  .len = IEEE80211_MAX_SSID_LEN },
 905         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 906         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 907         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 908                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 909 };
 910
 911 static const struct nla_policy
 912 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 913         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 914         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 915 };
 916
 917 static const struct nla_policy
 918 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 919         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 920         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 921         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 922                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 923         },
 924 };
 925
 926 /* policy for NAN function attributes */
 927 static const struct nla_policy
 928 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 929         [NL80211_NAN_FUNC_TYPE] =
 930                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 931         [NL80211_NAN_FUNC_SERVICE_ID] = {
 932                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 933         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 934         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 935         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 936         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 937         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 938         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 939         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 940         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 941         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 942                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 943         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 944         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 945         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 946         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 947         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 948 };
 949
 950 /* policy for Service Response Filter attributes */
 951 static const struct nla_policy
 952 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 953         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 954         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 955                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 956         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 957         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 958 };
 959
 960 /* policy for packet pattern attributes */
 961 static const struct nla_policy
 962 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 963         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 964         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 965         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 966 };
 967
 968 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 969                                      struct cfg80211_registered_device **rdev,
 970                                      struct wireless_dev **wdev,
 971                                      struct nlattr **attrbuf)
 972 {
 973         int err;
 974
 975         if (!cb->args[0]) {
 976                 struct nlattr **attrbuf_free = NULL;
 977
 978                 if (!attrbuf) {
 979                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 980                                           GFP_KERNEL);
 981                         if (!attrbuf)
 982                                 return -ENOMEM;
 983                         attrbuf_free = attrbuf;
 984                 }
 985
 986                 err = nlmsg_parse_deprecated(cb->nlh,
 987                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 988                                              attrbuf, nl80211_fam.maxattr,
 989                                              nl80211_policy, NULL);
 990                 if (err) {
 991                         kfree(attrbuf_free);
 992                         return err;
 993                 }
 994
 995                 rtnl_lock();
 996                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 997                                                    attrbuf);
 998                 kfree(attrbuf_free);
 999                 if (IS_ERR(*wdev)) {
1000                         rtnl_unlock();
1001                         return PTR_ERR(*wdev);
1002                 }
1003                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1004                 mutex_lock(&(*rdev)->wiphy.mtx);
1005                 rtnl_unlock();
1006                 /* 0 is the first index - add 1 to parse only once */
1007                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1008                 cb->args[1] = (*wdev)->identifier;
1009         } else {
1010                 /* subtract the 1 again here */
1011                 struct wiphy *wiphy;
1012                 struct wireless_dev *tmp;
1013
1014                 rtnl_lock();
1015                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1016                 if (!wiphy) {
1017                         rtnl_unlock();
1018                         return -ENODEV;
1019                 }
1020                 *rdev = wiphy_to_rdev(wiphy);
1021                 *wdev = NULL;
1022
1023                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1024                         if (tmp->identifier == cb->args[1]) {
1025                                 *wdev = tmp;
1026                                 break;
1027                         }
1028                 }
1029
1030                 if (!*wdev) {
1031                         rtnl_unlock();
1032                         return -ENODEV;
1033                 }
1034                 mutex_lock(&(*rdev)->wiphy.mtx);
1035                 rtnl_unlock();
1036         }
1037
1038         return 0;
1039 }
1040
1041 /* message building helper */
1042 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1043                      int flags, u8 cmd)
1044 {
1045         /* since there is no private header just add the generic one */
1046         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1047 }
1048
1049 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1050                                      const struct ieee80211_reg_rule *rule)
1051 {
1052         int j;
1053         struct nlattr *nl_wmm_rules =
1054                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1055
1056         if (!nl_wmm_rules)
1057                 goto nla_put_failure;
1058
1059         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1060                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1061
1062                 if (!nl_wmm_rule)
1063                         goto nla_put_failure;
1064
1065                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1066                                 rule->wmm_rule.client[j].cw_min) ||
1067                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1068                                 rule->wmm_rule.client[j].cw_max) ||
1069                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1070                                rule->wmm_rule.client[j].aifsn) ||
1071                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1072                                 rule->wmm_rule.client[j].cot))
1073                         goto nla_put_failure;
1074
1075                 nla_nest_end(msg, nl_wmm_rule);
1076         }
1077         nla_nest_end(msg, nl_wmm_rules);
1078
1079         return 0;
1080
1081 nla_put_failure:
1082         return -ENOBUFS;
1083 }
1084
1085 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1086                                    struct ieee80211_channel *chan,
1087                                    bool large)
1088 {
1089         /* Some channels must be completely excluded from the
1090          * list to protect old user-space tools from breaking
1091          */
1092         if (!large && chan->flags &
1093             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1094                 return 0;
1095         if (!large && chan->freq_offset)
1096                 return 0;
1097
1098         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1099                         chan->center_freq))
1100                 goto nla_put_failure;
1101
1102         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1103                 goto nla_put_failure;
1104
1105         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1106             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1107                 goto nla_put_failure;
1108         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1109                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1110                         goto nla_put_failure;
1111                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1112                         goto nla_put_failure;
1113         }
1114         if (chan->flags & IEEE80211_CHAN_RADAR) {
1115                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1116                         goto nla_put_failure;
1117                 if (large) {
1118                         u32 time;
1119
1120                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1121
1122                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1123                                         chan->dfs_state))
1124                                 goto nla_put_failure;
1125                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1126                                         time))
1127                                 goto nla_put_failure;
1128                         if (nla_put_u32(msg,
1129                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1130                                         chan->dfs_cac_ms))
1131                                 goto nla_put_failure;
1132                 }
1133         }
1134
1135         if (large) {
1136                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1137                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1138                         goto nla_put_failure;
1139                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1140                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1141                         goto nla_put_failure;
1142                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1143                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1144                         goto nla_put_failure;
1145                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1146                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1147                         goto nla_put_failure;
1148                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1149                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1150                         goto nla_put_failure;
1151                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1152                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1153                         goto nla_put_failure;
1154                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1155                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1156                         goto nla_put_failure;
1157                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1158                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1159                         goto nla_put_failure;
1160                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1161                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1162                         goto nla_put_failure;
1163                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1164                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1165                         goto nla_put_failure;
1166                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1167                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1168                         goto nla_put_failure;
1169                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1170                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1171                         goto nla_put_failure;
1172                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1173                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1174                         goto nla_put_failure;
1175                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1176                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1177                         goto nla_put_failure;
1178                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1179                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1180                         goto nla_put_failure;
1181                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1182                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1183                         goto nla_put_failure;
1184         }
1185
1186         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1187                         DBM_TO_MBM(chan->max_power)))
1188                 goto nla_put_failure;
1189
1190         if (large) {
1191                 const struct ieee80211_reg_rule *rule =
1192                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1193
1194                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1195                         if (nl80211_msg_put_wmm_rules(msg, rule))
1196                                 goto nla_put_failure;
1197                 }
1198         }
1199
1200         return 0;
1201
1202  nla_put_failure:
1203         return -ENOBUFS;
1204 }
1205
1206 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1207                                   struct cfg80211_txq_stats *txqstats,
1208                                   int attrtype)
1209 {
1210         struct nlattr *txqattr;
1211
1212 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1213         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1214             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1215                 return false;                                             \
1216         } while (0)
1217
1218         txqattr = nla_nest_start_noflag(msg, attrtype);
1219         if (!txqattr)
1220                 return false;
1221
1222         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1223         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1224         PUT_TXQVAL_U32(FLOWS, flows);
1225         PUT_TXQVAL_U32(DROPS, drops);
1226         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1227         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1228         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1229         PUT_TXQVAL_U32(COLLISIONS, collisions);
1230         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1231         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1232         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1233         nla_nest_end(msg, txqattr);
1234
1235 #undef PUT_TXQVAL_U32
1236         return true;
1237 }
1238
1239 /* netlink command implementations */
1240
1241 /**
1242  * nl80211_link_id - return link ID
1243  * @attrs: attributes to look at
1244  *
1245  * Returns: the link ID or 0 if not given
1246  *
1247  * Note this function doesn't do any validation of the link
1248  * ID validity wrt. links that were actually added, so it must
1249  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1250  * or if additional validation is done.
1251  */
1252 static unsigned int nl80211_link_id(struct nlattr **attrs)
1253 {
1254         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1255
1256         if (!linkid)
1257                 return 0;
1258
1259         return nla_get_u8(linkid);
1260 }
1261
1262 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1263 {
1264         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1265
1266         if (!linkid)
1267                 return -1;
1268
1269         return nla_get_u8(linkid);
1270 }
1271
1272 struct key_parse {
1273         struct key_params p;
1274         int idx;
1275         int type;
1276         bool def, defmgmt, defbeacon;
1277         bool def_uni, def_multi;
1278 };
1279
1280 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1281                                  struct key_parse *k)
1282 {
1283         struct nlattr *tb[NL80211_KEY_MAX + 1];
1284         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1285                                               nl80211_key_policy,
1286                                               info->extack);
1287         if (err)
1288                 return err;
1289
1290         k->def = !!tb[NL80211_KEY_DEFAULT];
1291         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1292         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1293
1294         if (k->def) {
1295                 k->def_uni = true;
1296                 k->def_multi = true;
1297         }
1298         if (k->defmgmt || k->defbeacon)
1299                 k->def_multi = true;
1300
1301         if (tb[NL80211_KEY_IDX])
1302                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1303
1304         if (tb[NL80211_KEY_DATA]) {
1305                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1306                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1307         }
1308
1309         if (tb[NL80211_KEY_SEQ]) {
1310                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1311                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1312         }
1313
1314         if (tb[NL80211_KEY_CIPHER])
1315                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1316
1317         if (tb[NL80211_KEY_TYPE])
1318                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1319
1320         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1321                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1322
1323                 err = nla_parse_nested_deprecated(kdt,
1324                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1325                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1326                                                   nl80211_key_default_policy,
1327                                                   info->extack);
1328                 if (err)
1329                         return err;
1330
1331                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1332                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1333         }
1334
1335         if (tb[NL80211_KEY_MODE])
1336                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1337
1338         return 0;
1339 }
1340
1341 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1342 {
1343         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1344                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1345                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1346         }
1347
1348         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1349                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1350                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1351         }
1352
1353         if (info->attrs[NL80211_ATTR_KEY_IDX])
1354                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1355
1356         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1357                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1358
1359         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1360         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1361
1362         if (k->def) {
1363                 k->def_uni = true;
1364                 k->def_multi = true;
1365         }
1366         if (k->defmgmt)
1367                 k->def_multi = true;
1368
1369         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1370                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1371
1372         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1373                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1374                 int err = nla_parse_nested_deprecated(kdt,
1375                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1376                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1377                                                       nl80211_key_default_policy,
1378                                                       info->extack);
1379                 if (err)
1380                         return err;
1381
1382                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1383                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1384         }
1385
1386         return 0;
1387 }
1388
1389 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1390 {
1391         int err;
1392
1393         memset(k, 0, sizeof(*k));
1394         k->idx = -1;
1395         k->type = -1;
1396
1397         if (info->attrs[NL80211_ATTR_KEY])
1398                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1399         else
1400                 err = nl80211_parse_key_old(info, k);
1401
1402         if (err)
1403                 return err;
1404
1405         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1406             (k->defbeacon ? 1 : 0) > 1) {
1407                 GENL_SET_ERR_MSG(info,
1408                                  "key with multiple default flags is invalid");
1409                 return -EINVAL;
1410         }
1411
1412         if (k->defmgmt || k->defbeacon) {
1413                 if (k->def_uni || !k->def_multi) {
1414                         GENL_SET_ERR_MSG(info,
1415                                          "defmgmt/defbeacon key must be mcast");
1416                         return -EINVAL;
1417                 }
1418         }
1419
1420         if (k->idx != -1) {
1421                 if (k->defmgmt) {
1422                         if (k->idx < 4 || k->idx > 5) {
1423                                 GENL_SET_ERR_MSG(info,
1424                                                  "defmgmt key idx not 4 or 5");
1425                                 return -EINVAL;
1426                         }
1427                 } else if (k->defbeacon) {
1428                         if (k->idx < 6 || k->idx > 7) {
1429                                 GENL_SET_ERR_MSG(info,
1430                                                  "defbeacon key idx not 6 or 7");
1431                                 return -EINVAL;
1432                         }
1433                 } else if (k->def) {
1434                         if (k->idx < 0 || k->idx > 3) {
1435                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1436                                 return -EINVAL;
1437                         }
1438                 } else {
1439                         if (k->idx < 0 || k->idx > 7) {
1440                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1441                                 return -EINVAL;
1442                         }
1443                 }
1444         }
1445
1446         return 0;
1447 }
1448
1449 static struct cfg80211_cached_keys *
1450 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1451                        struct genl_info *info, bool *no_ht)
1452 {
1453         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1454         struct key_parse parse;
1455         struct nlattr *key;
1456         struct cfg80211_cached_keys *result;
1457         int rem, err, def = 0;
1458         bool have_key = false;
1459
1460         nla_for_each_nested(key, keys, rem) {
1461                 have_key = true;
1462                 break;
1463         }
1464
1465         if (!have_key)
1466                 return NULL;
1467
1468         result = kzalloc(sizeof(*result), GFP_KERNEL);
1469         if (!result)
1470                 return ERR_PTR(-ENOMEM);
1471
1472         result->def = -1;
1473
1474         nla_for_each_nested(key, keys, rem) {
1475                 memset(&parse, 0, sizeof(parse));
1476                 parse.idx = -1;
1477
1478                 err = nl80211_parse_key_new(info, key, &parse);
1479                 if (err)
1480                         goto error;
1481                 err = -EINVAL;
1482                 if (!parse.p.key)
1483                         goto error;
1484                 if (parse.idx < 0 || parse.idx > 3) {
1485                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1486                         goto error;
1487                 }
1488                 if (parse.def) {
1489                         if (def) {
1490                                 GENL_SET_ERR_MSG(info,
1491                                                  "only one key can be default");
1492                                 goto error;
1493                         }
1494                         def = 1;
1495                         result->def = parse.idx;
1496                         if (!parse.def_uni || !parse.def_multi)
1497                                 goto error;
1498                 } else if (parse.defmgmt)
1499                         goto error;
1500                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1501                                                      parse.idx, false, NULL);
1502                 if (err)
1503                         goto error;
1504                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1505                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1506                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1507                         err = -EINVAL;
1508                         goto error;
1509                 }
1510                 result->params[parse.idx].cipher = parse.p.cipher;
1511                 result->params[parse.idx].key_len = parse.p.key_len;
1512                 result->params[parse.idx].key = result->data[parse.idx];
1513                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1514
1515                 /* must be WEP key if we got here */
1516                 if (no_ht)
1517                         *no_ht = true;
1518         }
1519
1520         if (result->def < 0) {
1521                 err = -EINVAL;
1522                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1523                 goto error;
1524         }
1525
1526         return result;
1527  error:
1528         kfree(result);
1529         return ERR_PTR(err);
1530 }
1531
1532 static int nl80211_key_allowed(struct wireless_dev *wdev)
1533 {
1534         ASSERT_WDEV_LOCK(wdev);
1535
1536         switch (wdev->iftype) {
1537         case NL80211_IFTYPE_AP:
1538         case NL80211_IFTYPE_AP_VLAN:
1539         case NL80211_IFTYPE_P2P_GO:
1540         case NL80211_IFTYPE_MESH_POINT:
1541                 break;
1542         case NL80211_IFTYPE_ADHOC:
1543                 if (wdev->u.ibss.current_bss)
1544                         return 0;
1545                 return -ENOLINK;
1546         case NL80211_IFTYPE_STATION:
1547         case NL80211_IFTYPE_P2P_CLIENT:
1548                 if (wdev->connected)
1549                         return 0;
1550                 return -ENOLINK;
1551         case NL80211_IFTYPE_UNSPECIFIED:
1552         case NL80211_IFTYPE_OCB:
1553         case NL80211_IFTYPE_MONITOR:
1554         case NL80211_IFTYPE_NAN:
1555         case NL80211_IFTYPE_P2P_DEVICE:
1556         case NL80211_IFTYPE_WDS:
1557         case NUM_NL80211_IFTYPES:
1558                 return -EINVAL;
1559         }
1560
1561         return 0;
1562 }
1563
1564 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1565                                                         u32 freq)
1566 {
1567         struct ieee80211_channel *chan;
1568
1569         chan = ieee80211_get_channel_khz(wiphy, freq);
1570         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1571                 return NULL;
1572         return chan;
1573 }
1574
1575 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1576 {
1577         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1578         int i;
1579
1580         if (!nl_modes)
1581                 goto nla_put_failure;
1582
1583         i = 0;
1584         while (ifmodes) {
1585                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1586                         goto nla_put_failure;
1587                 ifmodes >>= 1;
1588                 i++;
1589         }
1590
1591         nla_nest_end(msg, nl_modes);
1592         return 0;
1593
1594 nla_put_failure:
1595         return -ENOBUFS;
1596 }
1597
1598 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1599                                           struct sk_buff *msg,
1600                                           bool large)
1601 {
1602         struct nlattr *nl_combis;
1603         int i, j;
1604
1605         nl_combis = nla_nest_start_noflag(msg,
1606                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1607         if (!nl_combis)
1608                 goto nla_put_failure;
1609
1610         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1611                 const struct ieee80211_iface_combination *c;
1612                 struct nlattr *nl_combi, *nl_limits;
1613
1614                 c = &wiphy->iface_combinations[i];
1615
1616                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1617                 if (!nl_combi)
1618                         goto nla_put_failure;
1619
1620                 nl_limits = nla_nest_start_noflag(msg,
1621                                                   NL80211_IFACE_COMB_LIMITS);
1622                 if (!nl_limits)
1623                         goto nla_put_failure;
1624
1625                 for (j = 0; j < c->n_limits; j++) {
1626                         struct nlattr *nl_limit;
1627
1628                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1629                         if (!nl_limit)
1630                                 goto nla_put_failure;
1631                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1632                                         c->limits[j].max))
1633                                 goto nla_put_failure;
1634                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1635                                                 c->limits[j].types))
1636                                 goto nla_put_failure;
1637                         nla_nest_end(msg, nl_limit);
1638                 }
1639
1640                 nla_nest_end(msg, nl_limits);
1641
1642                 if (c->beacon_int_infra_match &&
1643                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1644                         goto nla_put_failure;
1645                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1646                                 c->num_different_channels) ||
1647                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1648                                 c->max_interfaces))
1649                         goto nla_put_failure;
1650                 if (large &&
1651                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1652                                 c->radar_detect_widths) ||
1653                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1654                                 c->radar_detect_regions)))
1655                         goto nla_put_failure;
1656                 if (c->beacon_int_min_gcd &&
1657                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1658                                 c->beacon_int_min_gcd))
1659                         goto nla_put_failure;
1660
1661                 nla_nest_end(msg, nl_combi);
1662         }
1663
1664         nla_nest_end(msg, nl_combis);
1665
1666         return 0;
1667 nla_put_failure:
1668         return -ENOBUFS;
1669 }
1670
1671 #ifdef CONFIG_PM
1672 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1673                                         struct sk_buff *msg)
1674 {
1675         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1676         struct nlattr *nl_tcp;
1677
1678         if (!tcp)
1679                 return 0;
1680
1681         nl_tcp = nla_nest_start_noflag(msg,
1682                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1683         if (!nl_tcp)
1684                 return -ENOBUFS;
1685
1686         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1687                         tcp->data_payload_max))
1688                 return -ENOBUFS;
1689
1690         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1691                         tcp->data_payload_max))
1692                 return -ENOBUFS;
1693
1694         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1695                 return -ENOBUFS;
1696
1697         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1698                                 sizeof(*tcp->tok), tcp->tok))
1699                 return -ENOBUFS;
1700
1701         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1702                         tcp->data_interval_max))
1703                 return -ENOBUFS;
1704
1705         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1706                         tcp->wake_payload_max))
1707                 return -ENOBUFS;
1708
1709         nla_nest_end(msg, nl_tcp);
1710         return 0;
1711 }
1712
1713 static int nl80211_send_wowlan(struct sk_buff *msg,
1714                                struct cfg80211_registered_device *rdev,
1715                                bool large)
1716 {
1717         struct nlattr *nl_wowlan;
1718
1719         if (!rdev->wiphy.wowlan)
1720                 return 0;
1721
1722         nl_wowlan = nla_nest_start_noflag(msg,
1723                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1724         if (!nl_wowlan)
1725                 return -ENOBUFS;
1726
1727         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1728              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1729             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1730              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1731             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1732              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1733             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1734              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1735             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1736              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1737             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1738              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1739             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1740              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1741             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1742              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1743                 return -ENOBUFS;
1744
1745         if (rdev->wiphy.wowlan->n_patterns) {
1746                 struct nl80211_pattern_support pat = {
1747                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1748                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1749                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1750                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1751                 };
1752
1753                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1754                             sizeof(pat), &pat))
1755                         return -ENOBUFS;
1756         }
1757
1758         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1759             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1760                         rdev->wiphy.wowlan->max_nd_match_sets))
1761                 return -ENOBUFS;
1762
1763         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1764                 return -ENOBUFS;
1765
1766         nla_nest_end(msg, nl_wowlan);
1767
1768         return 0;
1769 }
1770 #endif
1771
1772 static int nl80211_send_coalesce(struct sk_buff *msg,
1773                                  struct cfg80211_registered_device *rdev)
1774 {
1775         struct nl80211_coalesce_rule_support rule;
1776
1777         if (!rdev->wiphy.coalesce)
1778                 return 0;
1779
1780         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1781         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1782         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1783         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1784         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1785         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1786
1787         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1788                 return -ENOBUFS;
1789
1790         return 0;
1791 }
1792
1793 static int
1794 nl80211_send_iftype_data(struct sk_buff *msg,
1795                          const struct ieee80211_supported_band *sband,
1796                          const struct ieee80211_sband_iftype_data *iftdata)
1797 {
1798         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1799         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1800
1801         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1802                                 iftdata->types_mask))
1803                 return -ENOBUFS;
1804
1805         if (he_cap->has_he) {
1806                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1807                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1808                             he_cap->he_cap_elem.mac_cap_info) ||
1809                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1810                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1811                             he_cap->he_cap_elem.phy_cap_info) ||
1812                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1813                             sizeof(he_cap->he_mcs_nss_supp),
1814                             &he_cap->he_mcs_nss_supp) ||
1815                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1816                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1817                         return -ENOBUFS;
1818         }
1819
1820         if (eht_cap->has_eht && he_cap->has_he) {
1821                 u8 mcs_nss_size, ppe_thresh_size;
1822                 u16 ppe_thres_hdr;
1823                 bool is_ap;
1824
1825                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1826                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1827
1828                 mcs_nss_size =
1829                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1830                                                    &eht_cap->eht_cap_elem,
1831                                                    is_ap);
1832
1833                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1834                 ppe_thresh_size =
1835                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1836                                                eht_cap->eht_cap_elem.phy_cap_info);
1837
1838                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1839                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1840                             eht_cap->eht_cap_elem.mac_cap_info) ||
1841                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1842                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1843                             eht_cap->eht_cap_elem.phy_cap_info) ||
1844                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1845                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1846                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1847                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1848                         return -ENOBUFS;
1849         }
1850
1851         if (sband->band == NL80211_BAND_6GHZ &&
1852             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1853                     sizeof(iftdata->he_6ghz_capa),
1854                     &iftdata->he_6ghz_capa))
1855                 return -ENOBUFS;
1856
1857         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1858             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1859                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1860                 return -ENOBUFS;
1861
1862         return 0;
1863 }
1864
1865 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1866                                       struct ieee80211_supported_band *sband,
1867                                       bool large)
1868 {
1869         struct nlattr *nl_rates, *nl_rate;
1870         struct ieee80211_rate *rate;
1871         int i;
1872
1873         /* add HT info */
1874         if (sband->ht_cap.ht_supported &&
1875             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1876                      sizeof(sband->ht_cap.mcs),
1877                      &sband->ht_cap.mcs) ||
1878              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1879                          sband->ht_cap.cap) ||
1880              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1881                         sband->ht_cap.ampdu_factor) ||
1882              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1883                         sband->ht_cap.ampdu_density)))
1884                 return -ENOBUFS;
1885
1886         /* add VHT info */
1887         if (sband->vht_cap.vht_supported &&
1888             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1889                      sizeof(sband->vht_cap.vht_mcs),
1890                      &sband->vht_cap.vht_mcs) ||
1891              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1892                          sband->vht_cap.cap)))
1893                 return -ENOBUFS;
1894
1895         if (large && sband->n_iftype_data) {
1896                 struct nlattr *nl_iftype_data =
1897                         nla_nest_start_noflag(msg,
1898                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1899                 int err;
1900
1901                 if (!nl_iftype_data)
1902                         return -ENOBUFS;
1903
1904                 for (i = 0; i < sband->n_iftype_data; i++) {
1905                         struct nlattr *iftdata;
1906
1907                         iftdata = nla_nest_start_noflag(msg, i + 1);
1908                         if (!iftdata)
1909                                 return -ENOBUFS;
1910
1911                         err = nl80211_send_iftype_data(msg, sband,
1912                                                        &sband->iftype_data[i]);
1913                         if (err)
1914                                 return err;
1915
1916                         nla_nest_end(msg, iftdata);
1917                 }
1918
1919                 nla_nest_end(msg, nl_iftype_data);
1920         }
1921
1922         /* add EDMG info */
1923         if (large && sband->edmg_cap.channels &&
1924             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1925                        sband->edmg_cap.channels) ||
1926             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1927                        sband->edmg_cap.bw_config)))
1928
1929                 return -ENOBUFS;
1930
1931         /* add bitrates */
1932         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1933         if (!nl_rates)
1934                 return -ENOBUFS;
1935
1936         for (i = 0; i < sband->n_bitrates; i++) {
1937                 nl_rate = nla_nest_start_noflag(msg, i);
1938                 if (!nl_rate)
1939                         return -ENOBUFS;
1940
1941                 rate = &sband->bitrates[i];
1942                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1943                                 rate->bitrate))
1944                         return -ENOBUFS;
1945                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1946                     nla_put_flag(msg,
1947                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1948                         return -ENOBUFS;
1949
1950                 nla_nest_end(msg, nl_rate);
1951         }
1952
1953         nla_nest_end(msg, nl_rates);
1954
1955         return 0;
1956 }
1957
1958 static int
1959 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1960                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1961 {
1962         u16 stypes;
1963         struct nlattr *nl_ftypes, *nl_ifs;
1964         enum nl80211_iftype ift;
1965         int i;
1966
1967         if (!mgmt_stypes)
1968                 return 0;
1969
1970         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1971         if (!nl_ifs)
1972                 return -ENOBUFS;
1973
1974         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1975                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1976                 if (!nl_ftypes)
1977                         return -ENOBUFS;
1978                 i = 0;
1979                 stypes = mgmt_stypes[ift].tx;
1980                 while (stypes) {
1981                         if ((stypes & 1) &&
1982                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1983                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1984                                 return -ENOBUFS;
1985                         stypes >>= 1;
1986                         i++;
1987                 }
1988                 nla_nest_end(msg, nl_ftypes);
1989         }
1990
1991         nla_nest_end(msg, nl_ifs);
1992
1993         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1994         if (!nl_ifs)
1995                 return -ENOBUFS;
1996
1997         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1998                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1999                 if (!nl_ftypes)
2000                         return -ENOBUFS;
2001                 i = 0;
2002                 stypes = mgmt_stypes[ift].rx;
2003                 while (stypes) {
2004                         if ((stypes & 1) &&
2005                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2006                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2007                                 return -ENOBUFS;
2008                         stypes >>= 1;
2009                         i++;
2010                 }
2011                 nla_nest_end(msg, nl_ftypes);
2012         }
2013         nla_nest_end(msg, nl_ifs);
2014
2015         return 0;
2016 }
2017
2018 #define CMD(op, n)                                                      \
2019          do {                                                           \
2020                 if (rdev->ops->op) {                                    \
2021                         i++;                                            \
2022                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2023                                 goto nla_put_failure;                   \
2024                 }                                                       \
2025         } while (0)
2026
2027 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2028                                         struct sk_buff *msg)
2029 {
2030         int i = 0;
2031
2032         /*
2033          * do *NOT* add anything into this function, new things need to be
2034          * advertised only to new versions of userspace that can deal with
2035          * the split (and they can't possibly care about new features...
2036          */
2037         CMD(add_virtual_intf, NEW_INTERFACE);
2038         CMD(change_virtual_intf, SET_INTERFACE);
2039         CMD(add_key, NEW_KEY);
2040         CMD(start_ap, START_AP);
2041         CMD(add_station, NEW_STATION);
2042         CMD(add_mpath, NEW_MPATH);
2043         CMD(update_mesh_config, SET_MESH_CONFIG);
2044         CMD(change_bss, SET_BSS);
2045         CMD(auth, AUTHENTICATE);
2046         CMD(assoc, ASSOCIATE);
2047         CMD(deauth, DEAUTHENTICATE);
2048         CMD(disassoc, DISASSOCIATE);
2049         CMD(join_ibss, JOIN_IBSS);
2050         CMD(join_mesh, JOIN_MESH);
2051         CMD(set_pmksa, SET_PMKSA);
2052         CMD(del_pmksa, DEL_PMKSA);
2053         CMD(flush_pmksa, FLUSH_PMKSA);
2054         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2055                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2056         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2057         CMD(mgmt_tx, FRAME);
2058         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2059         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2060                 i++;
2061                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2062                         goto nla_put_failure;
2063         }
2064         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2065             rdev->ops->join_mesh) {
2066                 i++;
2067                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2068                         goto nla_put_failure;
2069         }
2070         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2071                 CMD(tdls_mgmt, TDLS_MGMT);
2072                 CMD(tdls_oper, TDLS_OPER);
2073         }
2074         if (rdev->wiphy.max_sched_scan_reqs)
2075                 CMD(sched_scan_start, START_SCHED_SCAN);
2076         CMD(probe_client, PROBE_CLIENT);
2077         CMD(set_noack_map, SET_NOACK_MAP);
2078         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2079                 i++;
2080                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2081                         goto nla_put_failure;
2082         }
2083         CMD(start_p2p_device, START_P2P_DEVICE);
2084         CMD(set_mcast_rate, SET_MCAST_RATE);
2085 #ifdef CONFIG_NL80211_TESTMODE
2086         CMD(testmode_cmd, TESTMODE);
2087 #endif
2088
2089         if (rdev->ops->connect || rdev->ops->auth) {
2090                 i++;
2091                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2092                         goto nla_put_failure;
2093         }
2094
2095         if (rdev->ops->disconnect || rdev->ops->deauth) {
2096                 i++;
2097                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2098                         goto nla_put_failure;
2099         }
2100
2101         return i;
2102  nla_put_failure:
2103         return -ENOBUFS;
2104 }
2105
2106 static int
2107 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2108                            struct sk_buff *msg)
2109 {
2110         struct nlattr *ftm;
2111
2112         if (!cap->ftm.supported)
2113                 return 0;
2114
2115         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2116         if (!ftm)
2117                 return -ENOBUFS;
2118
2119         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2120                 return -ENOBUFS;
2121         if (cap->ftm.non_asap &&
2122             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2123                 return -ENOBUFS;
2124         if (cap->ftm.request_lci &&
2125             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2126                 return -ENOBUFS;
2127         if (cap->ftm.request_civicloc &&
2128             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2129                 return -ENOBUFS;
2130         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2131                         cap->ftm.preambles))
2132                 return -ENOBUFS;
2133         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2134                         cap->ftm.bandwidths))
2135                 return -ENOBUFS;
2136         if (cap->ftm.max_bursts_exponent >= 0 &&
2137             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2138                         cap->ftm.max_bursts_exponent))
2139                 return -ENOBUFS;
2140         if (cap->ftm.max_ftms_per_burst &&
2141             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2142                         cap->ftm.max_ftms_per_burst))
2143                 return -ENOBUFS;
2144         if (cap->ftm.trigger_based &&
2145             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2146                 return -ENOBUFS;
2147         if (cap->ftm.non_trigger_based &&
2148             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2149                 return -ENOBUFS;
2150
2151         nla_nest_end(msg, ftm);
2152         return 0;
2153 }
2154
2155 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2156                                   struct sk_buff *msg)
2157 {
2158         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2159         struct nlattr *pmsr, *caps;
2160
2161         if (!cap)
2162                 return 0;
2163
2164         /*
2165          * we don't need to clean up anything here since the caller
2166          * will genlmsg_cancel() if we fail
2167          */
2168
2169         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2170         if (!pmsr)
2171                 return -ENOBUFS;
2172
2173         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2174                 return -ENOBUFS;
2175
2176         if (cap->report_ap_tsf &&
2177             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2178                 return -ENOBUFS;
2179
2180         if (cap->randomize_mac_addr &&
2181             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2182                 return -ENOBUFS;
2183
2184         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2185         if (!caps)
2186                 return -ENOBUFS;
2187
2188         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2189                 return -ENOBUFS;
2190
2191         nla_nest_end(msg, caps);
2192         nla_nest_end(msg, pmsr);
2193
2194         return 0;
2195 }
2196
2197 static int
2198 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2199                               struct sk_buff *msg)
2200 {
2201         int i;
2202         struct nlattr *nested, *nested_akms;
2203         const struct wiphy_iftype_akm_suites *iftype_akms;
2204
2205         if (!rdev->wiphy.num_iftype_akm_suites ||
2206             !rdev->wiphy.iftype_akm_suites)
2207                 return 0;
2208
2209         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2210         if (!nested)
2211                 return -ENOBUFS;
2212
2213         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2214                 nested_akms = nla_nest_start(msg, i + 1);
2215                 if (!nested_akms)
2216                         return -ENOBUFS;
2217
2218                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2219
2220                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2221                                         iftype_akms->iftypes_mask))
2222                         return -ENOBUFS;
2223
2224                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2225                             sizeof(u32) * iftype_akms->n_akm_suites,
2226                             iftype_akms->akm_suites)) {
2227                         return -ENOBUFS;
2228                 }
2229                 nla_nest_end(msg, nested_akms);
2230         }
2231
2232         nla_nest_end(msg, nested);
2233
2234         return 0;
2235 }
2236
2237 static int
2238 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2239                                struct sk_buff *msg)
2240 {
2241         struct nlattr *supp;
2242
2243         if (!rdev->wiphy.tid_config_support.vif &&
2244             !rdev->wiphy.tid_config_support.peer)
2245                 return 0;
2246
2247         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2248         if (!supp)
2249                 return -ENOSPC;
2250
2251         if (rdev->wiphy.tid_config_support.vif &&
2252             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2253                               rdev->wiphy.tid_config_support.vif,
2254                               NL80211_TID_CONFIG_ATTR_PAD))
2255                 goto fail;
2256
2257         if (rdev->wiphy.tid_config_support.peer &&
2258             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2259                               rdev->wiphy.tid_config_support.peer,
2260                               NL80211_TID_CONFIG_ATTR_PAD))
2261                 goto fail;
2262
2263         /* for now we just use the same value ... makes more sense */
2264         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2265                        rdev->wiphy.tid_config_support.max_retry))
2266                 goto fail;
2267         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2268                        rdev->wiphy.tid_config_support.max_retry))
2269                 goto fail;
2270
2271         nla_nest_end(msg, supp);
2272
2273         return 0;
2274 fail:
2275         nla_nest_cancel(msg, supp);
2276         return -ENOBUFS;
2277 }
2278
2279 static int
2280 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2281                       struct sk_buff *msg)
2282 {
2283         struct nlattr *sar_capa, *specs, *sub_freq_range;
2284         u8 num_freq_ranges;
2285         int i;
2286
2287         if (!rdev->wiphy.sar_capa)
2288                 return 0;
2289
2290         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2291
2292         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2293         if (!sar_capa)
2294                 return -ENOSPC;
2295
2296         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2297                 goto fail;
2298
2299         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2300         if (!specs)
2301                 goto fail;
2302
2303         /* report supported freq_ranges */
2304         for (i = 0; i < num_freq_ranges; i++) {
2305                 sub_freq_range = nla_nest_start(msg, i + 1);
2306                 if (!sub_freq_range)
2307                         goto fail;
2308
2309                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2310                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2311                         goto fail;
2312
2313                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2314                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2315                         goto fail;
2316
2317                 nla_nest_end(msg, sub_freq_range);
2318         }
2319
2320         nla_nest_end(msg, specs);
2321         nla_nest_end(msg, sar_capa);
2322
2323         return 0;
2324 fail:
2325         nla_nest_cancel(msg, sar_capa);
2326         return -ENOBUFS;
2327 }
2328
2329 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2330 {
2331         struct nlattr *config;
2332
2333         if (!wiphy->mbssid_max_interfaces)
2334                 return 0;
2335
2336         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2337         if (!config)
2338                 return -ENOBUFS;
2339
2340         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2341                        wiphy->mbssid_max_interfaces))
2342                 goto fail;
2343
2344         if (wiphy->ema_max_profile_periodicity &&
2345             nla_put_u8(msg,
2346                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2347                        wiphy->ema_max_profile_periodicity))
2348                 goto fail;
2349
2350         nla_nest_end(msg, config);
2351         return 0;
2352
2353 fail:
2354         nla_nest_cancel(msg, config);
2355         return -ENOBUFS;
2356 }
2357
2358 struct nl80211_dump_wiphy_state {
2359         s64 filter_wiphy;
2360         long start;
2361         long split_start, band_start, chan_start, capa_start;
2362         bool split;
2363 };
2364
2365 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2366                               enum nl80211_commands cmd,
2367                               struct sk_buff *msg, u32 portid, u32 seq,
2368                               int flags, struct nl80211_dump_wiphy_state *state)
2369 {
2370         void *hdr;
2371         struct nlattr *nl_bands, *nl_band;
2372         struct nlattr *nl_freqs, *nl_freq;
2373         struct nlattr *nl_cmds;
2374         enum nl80211_band band;
2375         struct ieee80211_channel *chan;
2376         int i;
2377         const struct ieee80211_txrx_stypes *mgmt_stypes =
2378                                 rdev->wiphy.mgmt_stypes;
2379         u32 features;
2380
2381         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2382         if (!hdr)
2383                 return -ENOBUFS;
2384
2385         if (WARN_ON(!state))
2386                 return -EINVAL;
2387
2388         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2389             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2390                            wiphy_name(&rdev->wiphy)) ||
2391             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2392                         cfg80211_rdev_list_generation))
2393                 goto nla_put_failure;
2394
2395         if (cmd != NL80211_CMD_NEW_WIPHY)
2396                 goto finish;
2397
2398         switch (state->split_start) {
2399         case 0:
2400                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2401                                rdev->wiphy.retry_short) ||
2402                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2403                                rdev->wiphy.retry_long) ||
2404                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2405                                 rdev->wiphy.frag_threshold) ||
2406                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2407                                 rdev->wiphy.rts_threshold) ||
2408                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2409                                rdev->wiphy.coverage_class) ||
2410                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2411                                rdev->wiphy.max_scan_ssids) ||
2412                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2413                                rdev->wiphy.max_sched_scan_ssids) ||
2414                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2415                                 rdev->wiphy.max_scan_ie_len) ||
2416                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2417                                 rdev->wiphy.max_sched_scan_ie_len) ||
2418                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2419                                rdev->wiphy.max_match_sets))
2420                         goto nla_put_failure;
2421
2422                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2423                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2424                         goto nla_put_failure;
2425                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2426                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2427                         goto nla_put_failure;
2428                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2429                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2430                         goto nla_put_failure;
2431                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2432                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2433                         goto nla_put_failure;
2434                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2435                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2436                         goto nla_put_failure;
2437                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2438                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2439                         goto nla_put_failure;
2440                 state->split_start++;
2441                 if (state->split)
2442                         break;
2443                 fallthrough;
2444         case 1:
2445                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2446                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2447                             rdev->wiphy.cipher_suites))
2448                         goto nla_put_failure;
2449
2450                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2451                                rdev->wiphy.max_num_pmkids))
2452                         goto nla_put_failure;
2453
2454                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2455                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2456                         goto nla_put_failure;
2457
2458                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2459                                 rdev->wiphy.available_antennas_tx) ||
2460                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2461                                 rdev->wiphy.available_antennas_rx))
2462                         goto nla_put_failure;
2463
2464                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2465                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2466                                 rdev->wiphy.probe_resp_offload))
2467                         goto nla_put_failure;
2468
2469                 if ((rdev->wiphy.available_antennas_tx ||
2470                      rdev->wiphy.available_antennas_rx) &&
2471                     rdev->ops->get_antenna) {
2472                         u32 tx_ant = 0, rx_ant = 0;
2473                         int res;
2474
2475                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2476                         if (!res) {
2477                                 if (nla_put_u32(msg,
2478                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2479                                                 tx_ant) ||
2480                                     nla_put_u32(msg,
2481                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2482                                                 rx_ant))
2483                                         goto nla_put_failure;
2484                         }
2485                 }
2486
2487                 state->split_start++;
2488                 if (state->split)
2489                         break;
2490                 fallthrough;
2491         case 2:
2492                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2493                                         rdev->wiphy.interface_modes))
2494                                 goto nla_put_failure;
2495                 state->split_start++;
2496                 if (state->split)
2497                         break;
2498                 fallthrough;
2499         case 3:
2500                 nl_bands = nla_nest_start_noflag(msg,
2501                                                  NL80211_ATTR_WIPHY_BANDS);
2502                 if (!nl_bands)
2503                         goto nla_put_failure;
2504
2505                 for (band = state->band_start;
2506                      band < (state->split ?
2507                                 NUM_NL80211_BANDS :
2508                                 NL80211_BAND_60GHZ + 1);
2509                      band++) {
2510                         struct ieee80211_supported_band *sband;
2511
2512                         /* omit higher bands for ancient software */
2513                         if (band > NL80211_BAND_5GHZ && !state->split)
2514                                 break;
2515
2516                         sband = rdev->wiphy.bands[band];
2517
2518                         if (!sband)
2519                                 continue;
2520
2521                         nl_band = nla_nest_start_noflag(msg, band);
2522                         if (!nl_band)
2523                                 goto nla_put_failure;
2524
2525                         switch (state->chan_start) {
2526                         case 0:
2527                                 if (nl80211_send_band_rateinfo(msg, sband,
2528                                                                state->split))
2529                                         goto nla_put_failure;
2530                                 state->chan_start++;
2531                                 if (state->split)
2532                                         break;
2533                                 fallthrough;
2534                         default:
2535                                 /* add frequencies */
2536                                 nl_freqs = nla_nest_start_noflag(msg,
2537                                                                  NL80211_BAND_ATTR_FREQS);
2538                                 if (!nl_freqs)
2539                                         goto nla_put_failure;
2540
2541                                 for (i = state->chan_start - 1;
2542                                      i < sband->n_channels;
2543                                      i++) {
2544                                         nl_freq = nla_nest_start_noflag(msg,
2545                                                                         i);
2546                                         if (!nl_freq)
2547                                                 goto nla_put_failure;
2548
2549                                         chan = &sband->channels[i];
2550
2551                                         if (nl80211_msg_put_channel(
2552                                                         msg, &rdev->wiphy, chan,
2553                                                         state->split))
2554                                                 goto nla_put_failure;
2555
2556                                         nla_nest_end(msg, nl_freq);
2557                                         if (state->split)
2558                                                 break;
2559                                 }
2560                                 if (i < sband->n_channels)
2561                                         state->chan_start = i + 2;
2562                                 else
2563                                         state->chan_start = 0;
2564                                 nla_nest_end(msg, nl_freqs);
2565                         }
2566
2567                         nla_nest_end(msg, nl_band);
2568
2569                         if (state->split) {
2570                                 /* start again here */
2571                                 if (state->chan_start)
2572                                         band--;
2573                                 break;
2574                         }
2575                 }
2576                 nla_nest_end(msg, nl_bands);
2577
2578                 if (band < NUM_NL80211_BANDS)
2579                         state->band_start = band + 1;
2580                 else
2581                         state->band_start = 0;
2582
2583                 /* if bands & channels are done, continue outside */
2584                 if (state->band_start == 0 && state->chan_start == 0)
2585                         state->split_start++;
2586                 if (state->split)
2587                         break;
2588                 fallthrough;
2589         case 4:
2590                 nl_cmds = nla_nest_start_noflag(msg,
2591                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2592                 if (!nl_cmds)
2593                         goto nla_put_failure;
2594
2595                 i = nl80211_add_commands_unsplit(rdev, msg);
2596                 if (i < 0)
2597                         goto nla_put_failure;
2598                 if (state->split) {
2599                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2600                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2601                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2602                                 CMD(channel_switch, CHANNEL_SWITCH);
2603                         CMD(set_qos_map, SET_QOS_MAP);
2604                         if (rdev->wiphy.features &
2605                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2606                                 CMD(add_tx_ts, ADD_TX_TS);
2607                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2608                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2609                         CMD(update_ft_ies, UPDATE_FT_IES);
2610                         if (rdev->wiphy.sar_capa)
2611                                 CMD(set_sar_specs, SET_SAR_SPECS);
2612                 }
2613 #undef CMD
2614
2615                 nla_nest_end(msg, nl_cmds);
2616                 state->split_start++;
2617                 if (state->split)
2618                         break;
2619                 fallthrough;
2620         case 5:
2621                 if (rdev->ops->remain_on_channel &&
2622                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2623                     nla_put_u32(msg,
2624                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2625                                 rdev->wiphy.max_remain_on_channel_duration))
2626                         goto nla_put_failure;
2627
2628                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2629                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2630                         goto nla_put_failure;
2631
2632                 state->split_start++;
2633                 if (state->split)
2634                         break;
2635                 fallthrough;
2636         case 6:
2637 #ifdef CONFIG_PM
2638                 if (nl80211_send_wowlan(msg, rdev, state->split))
2639                         goto nla_put_failure;
2640                 state->split_start++;
2641                 if (state->split)
2642                         break;
2643 #else
2644                 state->split_start++;
2645 #endif
2646                 fallthrough;
2647         case 7:
2648                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2649                                         rdev->wiphy.software_iftypes))
2650                         goto nla_put_failure;
2651
2652                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2653                                                    state->split))
2654                         goto nla_put_failure;
2655
2656                 state->split_start++;
2657                 if (state->split)
2658                         break;
2659                 fallthrough;
2660         case 8:
2661                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2662                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2663                                 rdev->wiphy.ap_sme_capa))
2664                         goto nla_put_failure;
2665
2666                 features = rdev->wiphy.features;
2667                 /*
2668                  * We can only add the per-channel limit information if the
2669                  * dump is split, otherwise it makes it too big. Therefore
2670                  * only advertise it in that case.
2671                  */
2672                 if (state->split)
2673                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2674                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2675                         goto nla_put_failure;
2676
2677                 if (rdev->wiphy.ht_capa_mod_mask &&
2678                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2679                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2680                             rdev->wiphy.ht_capa_mod_mask))
2681                         goto nla_put_failure;
2682
2683                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2684                     rdev->wiphy.max_acl_mac_addrs &&
2685                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2686                                 rdev->wiphy.max_acl_mac_addrs))
2687                         goto nla_put_failure;
2688
2689                 /*
2690                  * Any information below this point is only available to
2691                  * applications that can deal with it being split. This
2692                  * helps ensure that newly added capabilities don't break
2693                  * older tools by overrunning their buffers.
2694                  *
2695                  * We still increment split_start so that in the split
2696                  * case we'll continue with more data in the next round,
2697                  * but break unconditionally so unsplit data stops here.
2698                  */
2699                 if (state->split)
2700                         state->split_start++;
2701                 else
2702                         state->split_start = 0;
2703                 break;
2704         case 9:
2705                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2706                         goto nla_put_failure;
2707
2708                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2709                                 rdev->wiphy.max_sched_scan_plans) ||
2710                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2711                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2712                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2713                                 rdev->wiphy.max_sched_scan_plan_iterations))
2714                         goto nla_put_failure;
2715
2716                 if (rdev->wiphy.extended_capabilities &&
2717                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2718                              rdev->wiphy.extended_capabilities_len,
2719                              rdev->wiphy.extended_capabilities) ||
2720                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2721                              rdev->wiphy.extended_capabilities_len,
2722                              rdev->wiphy.extended_capabilities_mask)))
2723                         goto nla_put_failure;
2724
2725                 if (rdev->wiphy.vht_capa_mod_mask &&
2726                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2727                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2728                             rdev->wiphy.vht_capa_mod_mask))
2729                         goto nla_put_failure;
2730
2731                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2732                             rdev->wiphy.perm_addr))
2733                         goto nla_put_failure;
2734
2735                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2736                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2737                             rdev->wiphy.addr_mask))
2738                         goto nla_put_failure;
2739
2740                 if (rdev->wiphy.n_addresses > 1) {
2741                         void *attr;
2742
2743                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2744                         if (!attr)
2745                                 goto nla_put_failure;
2746
2747                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2748                                 if (nla_put(msg, i + 1, ETH_ALEN,
2749                                             rdev->wiphy.addresses[i].addr))
2750                                         goto nla_put_failure;
2751
2752                         nla_nest_end(msg, attr);
2753                 }
2754
2755                 state->split_start++;
2756                 break;
2757         case 10:
2758                 if (nl80211_send_coalesce(msg, rdev))
2759                         goto nla_put_failure;
2760
2761                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2762                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2763                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2764                         goto nla_put_failure;
2765
2766                 if (rdev->wiphy.max_ap_assoc_sta &&
2767                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2768                                 rdev->wiphy.max_ap_assoc_sta))
2769                         goto nla_put_failure;
2770
2771                 state->split_start++;
2772                 break;
2773         case 11:
2774                 if (rdev->wiphy.n_vendor_commands) {
2775                         const struct nl80211_vendor_cmd_info *info;
2776                         struct nlattr *nested;
2777
2778                         nested = nla_nest_start_noflag(msg,
2779                                                        NL80211_ATTR_VENDOR_DATA);
2780                         if (!nested)
2781                                 goto nla_put_failure;
2782
2783                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2784                                 info = &rdev->wiphy.vendor_commands[i].info;
2785                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2786                                         goto nla_put_failure;
2787                         }
2788                         nla_nest_end(msg, nested);
2789                 }
2790
2791                 if (rdev->wiphy.n_vendor_events) {
2792                         const struct nl80211_vendor_cmd_info *info;
2793                         struct nlattr *nested;
2794
2795                         nested = nla_nest_start_noflag(msg,
2796                                                        NL80211_ATTR_VENDOR_EVENTS);
2797                         if (!nested)
2798                                 goto nla_put_failure;
2799
2800                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2801                                 info = &rdev->wiphy.vendor_events[i];
2802                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2803                                         goto nla_put_failure;
2804                         }
2805                         nla_nest_end(msg, nested);
2806                 }
2807                 state->split_start++;
2808                 break;
2809         case 12:
2810                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2811                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2812                                rdev->wiphy.max_num_csa_counters))
2813                         goto nla_put_failure;
2814
2815                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2816                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2817                         goto nla_put_failure;
2818
2819                 if (rdev->wiphy.max_sched_scan_reqs &&
2820                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2821                                 rdev->wiphy.max_sched_scan_reqs))
2822                         goto nla_put_failure;
2823
2824                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2825                             sizeof(rdev->wiphy.ext_features),
2826                             rdev->wiphy.ext_features))
2827                         goto nla_put_failure;
2828
2829                 if (rdev->wiphy.bss_select_support) {
2830                         struct nlattr *nested;
2831                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2832
2833                         nested = nla_nest_start_noflag(msg,
2834                                                        NL80211_ATTR_BSS_SELECT);
2835                         if (!nested)
2836                                 goto nla_put_failure;
2837
2838                         i = 0;
2839                         while (bss_select_support) {
2840                                 if ((bss_select_support & 1) &&
2841                                     nla_put_flag(msg, i))
2842                                         goto nla_put_failure;
2843                                 i++;
2844                                 bss_select_support >>= 1;
2845                         }
2846                         nla_nest_end(msg, nested);
2847                 }
2848
2849                 state->split_start++;
2850                 break;
2851         case 13:
2852                 if (rdev->wiphy.num_iftype_ext_capab &&
2853                     rdev->wiphy.iftype_ext_capab) {
2854                         struct nlattr *nested_ext_capab, *nested;
2855
2856                         nested = nla_nest_start_noflag(msg,
2857                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2858                         if (!nested)
2859                                 goto nla_put_failure;
2860
2861                         for (i = state->capa_start;
2862                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2863                                 const struct wiphy_iftype_ext_capab *capab;
2864
2865                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2866
2867                                 nested_ext_capab = nla_nest_start_noflag(msg,
2868                                                                          i);
2869                                 if (!nested_ext_capab ||
2870                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2871                                                 capab->iftype) ||
2872                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2873                                             capab->extended_capabilities_len,
2874                                             capab->extended_capabilities) ||
2875                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2876                                             capab->extended_capabilities_len,
2877                                             capab->extended_capabilities_mask))
2878                                         goto nla_put_failure;
2879
2880                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2881                                     (nla_put_u16(msg,
2882                                                  NL80211_ATTR_EML_CAPABILITY,
2883                                                  capab->eml_capabilities) ||
2884                                      nla_put_u16(msg,
2885                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2886                                                  capab->mld_capa_and_ops)))
2887                                         goto nla_put_failure;
2888
2889                                 nla_nest_end(msg, nested_ext_capab);
2890                                 if (state->split)
2891                                         break;
2892                         }
2893                         nla_nest_end(msg, nested);
2894                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2895                                 state->capa_start = i + 1;
2896                                 break;
2897                         }
2898                 }
2899
2900                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2901                                 rdev->wiphy.nan_supported_bands))
2902                         goto nla_put_failure;
2903
2904                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2905                                             NL80211_EXT_FEATURE_TXQS)) {
2906                         struct cfg80211_txq_stats txqstats = {};
2907                         int res;
2908
2909                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2910                         if (!res &&
2911                             !nl80211_put_txq_stats(msg, &txqstats,
2912                                                    NL80211_ATTR_TXQ_STATS))
2913                                 goto nla_put_failure;
2914
2915                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2916                                         rdev->wiphy.txq_limit))
2917                                 goto nla_put_failure;
2918                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2919                                         rdev->wiphy.txq_memory_limit))
2920                                 goto nla_put_failure;
2921                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2922                                         rdev->wiphy.txq_quantum))
2923                                 goto nla_put_failure;
2924                 }
2925
2926                 state->split_start++;
2927                 break;
2928         case 14:
2929                 if (nl80211_send_pmsr_capa(rdev, msg))
2930                         goto nla_put_failure;
2931
2932                 state->split_start++;
2933                 break;
2934         case 15:
2935                 if (rdev->wiphy.akm_suites &&
2936                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2937                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2938                             rdev->wiphy.akm_suites))
2939                         goto nla_put_failure;
2940
2941                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2942                         goto nla_put_failure;
2943
2944                 if (nl80211_put_tid_config_support(rdev, msg))
2945                         goto nla_put_failure;
2946                 state->split_start++;
2947                 break;
2948         case 16:
2949                 if (nl80211_put_sar_specs(rdev, msg))
2950                         goto nla_put_failure;
2951
2952                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2953                         goto nla_put_failure;
2954
2955                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2956                                 rdev->wiphy.max_num_akm_suites))
2957                         goto nla_put_failure;
2958
2959                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2960                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2961
2962                 /* done */
2963                 state->split_start = 0;
2964                 break;
2965         }
2966  finish:
2967         genlmsg_end(msg, hdr);
2968         return 0;
2969
2970  nla_put_failure:
2971         genlmsg_cancel(msg, hdr);
2972         return -EMSGSIZE;
2973 }
2974
2975 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2976                                     struct netlink_callback *cb,
2977                                     struct nl80211_dump_wiphy_state *state)
2978 {
2979         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2980         int ret;
2981
2982         if (!tb)
2983                 return -ENOMEM;
2984
2985         ret = nlmsg_parse_deprecated(cb->nlh,
2986                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2987                                      tb, nl80211_fam.maxattr,
2988                                      nl80211_policy, NULL);
2989         /* ignore parse errors for backward compatibility */
2990         if (ret) {
2991                 ret = 0;
2992                 goto out;
2993         }
2994
2995         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2996         if (tb[NL80211_ATTR_WIPHY])
2997                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2998         if (tb[NL80211_ATTR_WDEV])
2999                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3000         if (tb[NL80211_ATTR_IFINDEX]) {
3001                 struct net_device *netdev;
3002                 struct cfg80211_registered_device *rdev;
3003                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3004
3005                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3006                 if (!netdev) {
3007                         ret = -ENODEV;
3008                         goto out;
3009                 }
3010                 if (netdev->ieee80211_ptr) {
3011                         rdev = wiphy_to_rdev(
3012                                 netdev->ieee80211_ptr->wiphy);
3013                         state->filter_wiphy = rdev->wiphy_idx;
3014                 }
3015         }
3016
3017         ret = 0;
3018 out:
3019         kfree(tb);
3020         return ret;
3021 }
3022
3023 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3024 {
3025         int idx = 0, ret;
3026         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3027         struct cfg80211_registered_device *rdev;
3028
3029         rtnl_lock();
3030         if (!state) {
3031                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3032                 if (!state) {
3033                         rtnl_unlock();
3034                         return -ENOMEM;
3035                 }
3036                 state->filter_wiphy = -1;
3037                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3038                 if (ret) {
3039                         kfree(state);
3040                         rtnl_unlock();
3041                         return ret;
3042                 }
3043                 cb->args[0] = (long)state;
3044         }
3045
3046         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3047                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3048                         continue;
3049                 if (++idx <= state->start)
3050                         continue;
3051                 if (state->filter_wiphy != -1 &&
3052                     state->filter_wiphy != rdev->wiphy_idx)
3053                         continue;
3054                 /* attempt to fit multiple wiphy data chunks into the skb */
3055                 do {
3056                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3057                                                  skb,
3058                                                  NETLINK_CB(cb->skb).portid,
3059                                                  cb->nlh->nlmsg_seq,
3060                                                  NLM_F_MULTI, state);
3061                         if (ret < 0) {
3062                                 /*
3063                                  * If sending the wiphy data didn't fit (ENOBUFS
3064                                  * or EMSGSIZE returned), this SKB is still
3065                                  * empty (so it's not too big because another
3066                                  * wiphy dataset is already in the skb) and
3067                                  * we've not tried to adjust the dump allocation
3068                                  * yet ... then adjust the alloc size to be
3069                                  * bigger, and return 1 but with the empty skb.
3070                                  * This results in an empty message being RX'ed
3071                                  * in userspace, but that is ignored.
3072                                  *
3073                                  * We can then retry with the larger buffer.
3074                                  */
3075                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3076                                     !skb->len && !state->split &&
3077                                     cb->min_dump_alloc < 4096) {
3078                                         cb->min_dump_alloc = 4096;
3079                                         state->split_start = 0;
3080                                         rtnl_unlock();
3081                                         return 1;
3082                                 }
3083                                 idx--;
3084                                 break;
3085                         }
3086                 } while (state->split_start > 0);
3087                 break;
3088         }
3089         rtnl_unlock();
3090
3091         state->start = idx;
3092
3093         return skb->len;
3094 }
3095
3096 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3097 {
3098         kfree((void *)cb->args[0]);
3099         return 0;
3100 }
3101
3102 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3103 {
3104         struct sk_buff *msg;
3105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3106         struct nl80211_dump_wiphy_state state = {};
3107
3108         msg = nlmsg_new(4096, GFP_KERNEL);
3109         if (!msg)
3110                 return -ENOMEM;
3111
3112         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3113                                info->snd_portid, info->snd_seq, 0,
3114                                &state) < 0) {
3115                 nlmsg_free(msg);
3116                 return -ENOBUFS;
3117         }
3118
3119         return genlmsg_reply(msg, info);
3120 }
3121
3122 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3123         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3124         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3125         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3126         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3127         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3128 };
3129
3130 static int parse_txq_params(struct nlattr *tb[],
3131                             struct ieee80211_txq_params *txq_params)
3132 {
3133         u8 ac;
3134
3135         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3136             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3137             !tb[NL80211_TXQ_ATTR_AIFS])
3138                 return -EINVAL;
3139
3140         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3141         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3142         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3143         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3144         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3145
3146         if (ac >= NL80211_NUM_ACS)
3147                 return -EINVAL;
3148         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3149         return 0;
3150 }
3151
3152 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3153 {
3154         /*
3155          * You can only set the channel explicitly for some interfaces,
3156          * most have their channel managed via their respective
3157          * "establish a connection" command (connect, join, ...)
3158          *
3159          * For AP/GO and mesh mode, the channel can be set with the
3160          * channel userspace API, but is only stored and passed to the
3161          * low-level driver when the AP starts or the mesh is joined.
3162          * This is for backward compatibility, userspace can also give
3163          * the channel in the start-ap or join-mesh commands instead.
3164          *
3165          * Monitors are special as they are normally slaved to
3166          * whatever else is going on, so they have their own special
3167          * operation to set the monitor channel if possible.
3168          */
3169         return !wdev ||
3170                 wdev->iftype == NL80211_IFTYPE_AP ||
3171                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3172                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3173                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3174 }
3175
3176 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3177                           struct genl_info *info,
3178                           struct cfg80211_chan_def *chandef)
3179 {
3180         struct netlink_ext_ack *extack = info->extack;
3181         struct nlattr **attrs = info->attrs;
3182         u32 control_freq;
3183
3184         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3185                 return -EINVAL;
3186
3187         control_freq = MHZ_TO_KHZ(
3188                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3189         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3190                 control_freq +=
3191                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3192
3193         memset(chandef, 0, sizeof(*chandef));
3194         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3195         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3196         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3197         chandef->freq1_offset = control_freq % 1000;
3198         chandef->center_freq2 = 0;
3199
3200         /* Primary channel not allowed */
3201         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3202                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3203                                     "Channel is disabled");
3204                 return -EINVAL;
3205         }
3206
3207         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3208                 enum nl80211_channel_type chantype;
3209
3210                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3211
3212                 switch (chantype) {
3213                 case NL80211_CHAN_NO_HT:
3214                 case NL80211_CHAN_HT20:
3215                 case NL80211_CHAN_HT40PLUS:
3216                 case NL80211_CHAN_HT40MINUS:
3217                         cfg80211_chandef_create(chandef, chandef->chan,
3218                                                 chantype);
3219                         /* user input for center_freq is incorrect */
3220                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3221                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3222                                 NL_SET_ERR_MSG_ATTR(extack,
3223                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3224                                                     "bad center frequency 1");
3225                                 return -EINVAL;
3226                         }
3227                         /* center_freq2 must be zero */
3228                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3229                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3230                                 NL_SET_ERR_MSG_ATTR(extack,
3231                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3232                                                     "center frequency 2 can't be used");
3233                                 return -EINVAL;
3234                         }
3235                         break;
3236                 default:
3237                         NL_SET_ERR_MSG_ATTR(extack,
3238                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3239                                             "invalid channel type");
3240                         return -EINVAL;
3241                 }
3242         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3243                 chandef->width =
3244                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3245                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3246                         /* User input error for channel width doesn't match channel  */
3247                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3248                                 NL_SET_ERR_MSG_ATTR(extack,
3249                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3250                                                     "bad channel width");
3251                                 return -EINVAL;
3252                         }
3253                 }
3254                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3255                         chandef->center_freq1 =
3256                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3257                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3258                                 chandef->freq1_offset = nla_get_u32(
3259                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3260                         else
3261                                 chandef->freq1_offset = 0;
3262                 }
3263                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3264                         chandef->center_freq2 =
3265                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3266         }
3267
3268         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3269                 chandef->edmg.channels =
3270                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3271
3272                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3273                         chandef->edmg.bw_config =
3274                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3275         } else {
3276                 chandef->edmg.bw_config = 0;
3277                 chandef->edmg.channels = 0;
3278         }
3279
3280         if (!cfg80211_chandef_valid(chandef)) {
3281                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3282                 return -EINVAL;
3283         }
3284
3285         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3286                                      IEEE80211_CHAN_DISABLED)) {
3287                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3288                 return -EINVAL;
3289         }
3290
3291         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3292              chandef->width == NL80211_CHAN_WIDTH_10) &&
3293             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3294                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3295                 return -EINVAL;
3296         }
3297
3298         return 0;
3299 }
3300
3301 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3302                                  struct net_device *dev,
3303                                  struct genl_info *info,
3304                                  int _link_id)
3305 {
3306         struct cfg80211_chan_def chandef;
3307         int result;
3308         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3309         struct wireless_dev *wdev = NULL;
3310         int link_id = _link_id;
3311
3312         if (dev)
3313                 wdev = dev->ieee80211_ptr;
3314         if (!nl80211_can_set_dev_channel(wdev))
3315                 return -EOPNOTSUPP;
3316         if (wdev)
3317                 iftype = wdev->iftype;
3318
3319         if (link_id < 0) {
3320                 if (wdev && wdev->valid_links)
3321                         return -EINVAL;
3322                 link_id = 0;
3323         }
3324
3325         result = nl80211_parse_chandef(rdev, info, &chandef);
3326         if (result)
3327                 return result;
3328
3329         switch (iftype) {
3330         case NL80211_IFTYPE_AP:
3331         case NL80211_IFTYPE_P2P_GO:
3332                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3333                                                    iftype))
3334                         return -EINVAL;
3335                 if (wdev->links[link_id].ap.beacon_interval) {
3336                         struct ieee80211_channel *cur_chan;
3337
3338                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3339                             !(rdev->wiphy.features &
3340                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3341                                 return -EBUSY;
3342
3343                         /* Only allow dynamic channel width changes */
3344                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3345                         if (chandef.chan != cur_chan)
3346                                 return -EBUSY;
3347
3348                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3349                                                        &chandef);
3350                         if (result)
3351                                 return result;
3352                         wdev->links[link_id].ap.chandef = chandef;
3353                 } else {
3354                         wdev->u.ap.preset_chandef = chandef;
3355                 }
3356                 return 0;
3357         case NL80211_IFTYPE_MESH_POINT:
3358                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3359         case NL80211_IFTYPE_MONITOR:
3360                 return cfg80211_set_monitor_channel(rdev, &chandef);
3361         default:
3362                 break;
3363         }
3364
3365         return -EINVAL;
3366 }
3367
3368 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3369 {
3370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3371         int link_id = nl80211_link_id_or_invalid(info->attrs);
3372         struct net_device *netdev = info->user_ptr[1];
3373         int ret;
3374
3375         wdev_lock(netdev->ieee80211_ptr);
3376         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3377         wdev_unlock(netdev->ieee80211_ptr);
3378
3379         return ret;
3380 }
3381
3382 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3383 {
3384         struct cfg80211_registered_device *rdev = NULL;
3385         struct net_device *netdev = NULL;
3386         struct wireless_dev *wdev;
3387         int result = 0, rem_txq_params = 0;
3388         struct nlattr *nl_txq_params;
3389         u32 changed;
3390         u8 retry_short = 0, retry_long = 0;
3391         u32 frag_threshold = 0, rts_threshold = 0;
3392         u8 coverage_class = 0;
3393         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3394
3395         rtnl_lock();
3396         /*
3397          * Try to find the wiphy and netdev. Normally this
3398          * function shouldn't need the netdev, but this is
3399          * done for backward compatibility -- previously
3400          * setting the channel was done per wiphy, but now
3401          * it is per netdev. Previous userland like hostapd
3402          * also passed a netdev to set_wiphy, so that it is
3403          * possible to let that go to the right netdev!
3404          */
3405
3406         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3407                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3408
3409                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3410                 if (netdev && netdev->ieee80211_ptr)
3411                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3412                 else
3413                         netdev = NULL;
3414         }
3415
3416         if (!netdev) {
3417                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3418                                                   info->attrs);
3419                 if (IS_ERR(rdev)) {
3420                         rtnl_unlock();
3421                         return PTR_ERR(rdev);
3422                 }
3423                 wdev = NULL;
3424                 netdev = NULL;
3425                 result = 0;
3426         } else
3427                 wdev = netdev->ieee80211_ptr;
3428
3429         wiphy_lock(&rdev->wiphy);
3430
3431         /*
3432          * end workaround code, by now the rdev is available
3433          * and locked, and wdev may or may not be NULL.
3434          */
3435
3436         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3437                 result = cfg80211_dev_rename(
3438                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3439         rtnl_unlock();
3440
3441         if (result)
3442                 goto out;
3443
3444         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3445                 struct ieee80211_txq_params txq_params;
3446                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3447
3448                 if (!rdev->ops->set_txq_params) {
3449                         result = -EOPNOTSUPP;
3450                         goto out;
3451                 }
3452
3453                 if (!netdev) {
3454                         result = -EINVAL;
3455                         goto out;
3456                 }
3457
3458                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3459                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3460                         result = -EINVAL;
3461                         goto out;
3462                 }
3463
3464                 if (!netif_running(netdev)) {
3465                         result = -ENETDOWN;
3466                         goto out;
3467                 }
3468
3469                 nla_for_each_nested(nl_txq_params,
3470                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3471                                     rem_txq_params) {
3472                         result = nla_parse_nested_deprecated(tb,
3473                                                              NL80211_TXQ_ATTR_MAX,
3474                                                              nl_txq_params,
3475                                                              txq_params_policy,
3476                                                              info->extack);
3477                         if (result)
3478                                 goto out;
3479                         result = parse_txq_params(tb, &txq_params);
3480                         if (result)
3481                                 goto out;
3482
3483                         txq_params.link_id =
3484                                 nl80211_link_id_or_invalid(info->attrs);
3485
3486                         wdev_lock(netdev->ieee80211_ptr);
3487                         if (txq_params.link_id >= 0 &&
3488                             !(netdev->ieee80211_ptr->valid_links &
3489                               BIT(txq_params.link_id)))
3490                                 result = -ENOLINK;
3491                         else if (txq_params.link_id >= 0 &&
3492                                  !netdev->ieee80211_ptr->valid_links)
3493                                 result = -EINVAL;
3494                         else
3495                                 result = rdev_set_txq_params(rdev, netdev,
3496                                                              &txq_params);
3497                         wdev_unlock(netdev->ieee80211_ptr);
3498                         if (result)
3499                                 goto out;
3500                 }
3501         }
3502
3503         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3504                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3505
3506                 if (wdev) {
3507                         wdev_lock(wdev);
3508                         result = __nl80211_set_channel(
3509                                 rdev,
3510                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3511                                 info, link_id);
3512                         wdev_unlock(wdev);
3513                 } else {
3514                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3515                 }
3516
3517                 if (result)
3518                         goto out;
3519         }
3520
3521         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3522                 struct wireless_dev *txp_wdev = wdev;
3523                 enum nl80211_tx_power_setting type;
3524                 int idx, mbm = 0;
3525
3526                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3527                         txp_wdev = NULL;
3528
3529                 if (!rdev->ops->set_tx_power) {
3530                         result = -EOPNOTSUPP;
3531                         goto out;
3532                 }
3533
3534                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3535                 type = nla_get_u32(info->attrs[idx]);
3536
3537                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3538                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3539                         result = -EINVAL;
3540                         goto out;
3541                 }
3542
3543                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3544                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3545                         mbm = nla_get_u32(info->attrs[idx]);
3546                 }
3547
3548                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3549                 if (result)
3550                         goto out;
3551         }
3552
3553         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3554             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3555                 u32 tx_ant, rx_ant;
3556
3557                 if ((!rdev->wiphy.available_antennas_tx &&
3558                      !rdev->wiphy.available_antennas_rx) ||
3559                     !rdev->ops->set_antenna) {
3560                         result = -EOPNOTSUPP;
3561                         goto out;
3562                 }
3563
3564                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3565                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3566
3567                 /* reject antenna configurations which don't match the
3568                  * available antenna masks, except for the "all" mask */
3569                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3570                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3571                         result = -EINVAL;
3572                         goto out;
3573                 }
3574
3575                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3576                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3577
3578                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3579                 if (result)
3580                         goto out;
3581         }
3582
3583         changed = 0;
3584
3585         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3586                 retry_short = nla_get_u8(
3587                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3588
3589                 changed |= WIPHY_PARAM_RETRY_SHORT;
3590         }
3591
3592         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3593                 retry_long = nla_get_u8(
3594                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3595
3596                 changed |= WIPHY_PARAM_RETRY_LONG;
3597         }
3598
3599         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3600                 frag_threshold = nla_get_u32(
3601                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3602                 if (frag_threshold < 256) {
3603                         result = -EINVAL;
3604                         goto out;
3605                 }
3606
3607                 if (frag_threshold != (u32) -1) {
3608                         /*
3609                          * Fragments (apart from the last one) are required to
3610                          * have even length. Make the fragmentation code
3611                          * simpler by stripping LSB should someone try to use
3612                          * odd threshold value.
3613                          */
3614                         frag_threshold &= ~0x1;
3615                 }
3616                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3617         }
3618
3619         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3620                 rts_threshold = nla_get_u32(
3621                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3622                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3623         }
3624
3625         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3626                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3627                         result = -EINVAL;
3628                         goto out;
3629                 }
3630
3631                 coverage_class = nla_get_u8(
3632                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3633                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3634         }
3635
3636         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3637                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3638                         result = -EOPNOTSUPP;
3639                         goto out;
3640                 }
3641
3642                 changed |= WIPHY_PARAM_DYN_ACK;
3643         }
3644
3645         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3646                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3647                                              NL80211_EXT_FEATURE_TXQS)) {
3648                         result = -EOPNOTSUPP;
3649                         goto out;
3650                 }
3651                 txq_limit = nla_get_u32(
3652                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3653                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3654         }
3655
3656         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3657                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3658                                              NL80211_EXT_FEATURE_TXQS)) {
3659                         result = -EOPNOTSUPP;
3660                         goto out;
3661                 }
3662                 txq_memory_limit = nla_get_u32(
3663                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3664                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3665         }
3666
3667         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3668                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3669                                              NL80211_EXT_FEATURE_TXQS)) {
3670                         result = -EOPNOTSUPP;
3671                         goto out;
3672                 }
3673                 txq_quantum = nla_get_u32(
3674                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3675                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3676         }
3677
3678         if (changed) {
3679                 u8 old_retry_short, old_retry_long;
3680                 u32 old_frag_threshold, old_rts_threshold;
3681                 u8 old_coverage_class;
3682                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3683
3684                 if (!rdev->ops->set_wiphy_params) {
3685                         result = -EOPNOTSUPP;
3686                         goto out;
3687                 }
3688
3689                 old_retry_short = rdev->wiphy.retry_short;
3690                 old_retry_long = rdev->wiphy.retry_long;
3691                 old_frag_threshold = rdev->wiphy.frag_threshold;
3692                 old_rts_threshold = rdev->wiphy.rts_threshold;
3693                 old_coverage_class = rdev->wiphy.coverage_class;
3694                 old_txq_limit = rdev->wiphy.txq_limit;
3695                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3696                 old_txq_quantum = rdev->wiphy.txq_quantum;
3697
3698                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3699                         rdev->wiphy.retry_short = retry_short;
3700                 if (changed & WIPHY_PARAM_RETRY_LONG)
3701                         rdev->wiphy.retry_long = retry_long;
3702                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3703                         rdev->wiphy.frag_threshold = frag_threshold;
3704                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3705                         rdev->wiphy.rts_threshold = rts_threshold;
3706                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3707                         rdev->wiphy.coverage_class = coverage_class;
3708                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3709                         rdev->wiphy.txq_limit = txq_limit;
3710                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3711                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3712                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3713                         rdev->wiphy.txq_quantum = txq_quantum;
3714
3715                 result = rdev_set_wiphy_params(rdev, changed);
3716                 if (result) {
3717                         rdev->wiphy.retry_short = old_retry_short;
3718                         rdev->wiphy.retry_long = old_retry_long;
3719                         rdev->wiphy.frag_threshold = old_frag_threshold;
3720                         rdev->wiphy.rts_threshold = old_rts_threshold;
3721                         rdev->wiphy.coverage_class = old_coverage_class;
3722                         rdev->wiphy.txq_limit = old_txq_limit;
3723                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3724                         rdev->wiphy.txq_quantum = old_txq_quantum;
3725                         goto out;
3726                 }
3727         }
3728
3729         result = 0;
3730
3731 out:
3732         wiphy_unlock(&rdev->wiphy);
3733         return result;
3734 }
3735
3736 static int nl80211_send_chandef(struct sk_buff *msg,
3737                                 const struct cfg80211_chan_def *chandef)
3738 {
3739         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3740                 return -EINVAL;
3741
3742         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3743                         chandef->chan->center_freq))
3744                 return -ENOBUFS;
3745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3746                         chandef->chan->freq_offset))
3747                 return -ENOBUFS;
3748         switch (chandef->width) {
3749         case NL80211_CHAN_WIDTH_20_NOHT:
3750         case NL80211_CHAN_WIDTH_20:
3751         case NL80211_CHAN_WIDTH_40:
3752                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3753                                 cfg80211_get_chandef_type(chandef)))
3754                         return -ENOBUFS;
3755                 break;
3756         default:
3757                 break;
3758         }
3759         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3760                 return -ENOBUFS;
3761         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3762                 return -ENOBUFS;
3763         if (chandef->center_freq2 &&
3764             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3765                 return -ENOBUFS;
3766         return 0;
3767 }
3768
3769 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3770                               struct cfg80211_registered_device *rdev,
3771                               struct wireless_dev *wdev,
3772                               enum nl80211_commands cmd)
3773 {
3774         struct net_device *dev = wdev->netdev;
3775         void *hdr;
3776
3777         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3778                 cmd != NL80211_CMD_DEL_INTERFACE &&
3779                 cmd != NL80211_CMD_SET_INTERFACE);
3780
3781         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3782         if (!hdr)
3783                 return -1;
3784
3785         if (dev &&
3786             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3787              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3788                 goto nla_put_failure;
3789
3790         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3791             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3792             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3793                               NL80211_ATTR_PAD) ||
3794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3795             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3796                         rdev->devlist_generation ^
3797                         (cfg80211_rdev_list_generation << 2)) ||
3798             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3799                 goto nla_put_failure;
3800
3801         if (rdev->ops->get_channel && !wdev->valid_links) {
3802                 struct cfg80211_chan_def chandef = {};
3803                 int ret;
3804
3805                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3806                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3807                         goto nla_put_failure;
3808         }
3809
3810         if (rdev->ops->get_tx_power) {
3811                 int dbm, ret;
3812
3813                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3814                 if (ret == 0 &&
3815                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3816                                 DBM_TO_MBM(dbm)))
3817                         goto nla_put_failure;
3818         }
3819
3820         wdev_lock(wdev);
3821         switch (wdev->iftype) {
3822         case NL80211_IFTYPE_AP:
3823         case NL80211_IFTYPE_P2P_GO:
3824                 if (wdev->u.ap.ssid_len &&
3825                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3826                             wdev->u.ap.ssid))
3827                         goto nla_put_failure_locked;
3828                 break;
3829         case NL80211_IFTYPE_STATION:
3830         case NL80211_IFTYPE_P2P_CLIENT:
3831                 if (wdev->u.client.ssid_len &&
3832                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3833                             wdev->u.client.ssid))
3834                         goto nla_put_failure_locked;
3835                 break;
3836         case NL80211_IFTYPE_ADHOC:
3837                 if (wdev->u.ibss.ssid_len &&
3838                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3839                             wdev->u.ibss.ssid))
3840                         goto nla_put_failure_locked;
3841                 break;
3842         default:
3843                 /* nothing */
3844                 break;
3845         }
3846         wdev_unlock(wdev);
3847
3848         if (rdev->ops->get_txq_stats) {
3849                 struct cfg80211_txq_stats txqstats = {};
3850                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3851
3852                 if (ret == 0 &&
3853                     !nl80211_put_txq_stats(msg, &txqstats,
3854                                            NL80211_ATTR_TXQ_STATS))
3855                         goto nla_put_failure;
3856         }
3857
3858         if (wdev->valid_links) {
3859                 unsigned int link_id;
3860                 struct nlattr *links = nla_nest_start(msg,
3861                                                       NL80211_ATTR_MLO_LINKS);
3862
3863                 if (!links)
3864                         goto nla_put_failure;
3865
3866                 for_each_valid_link(wdev, link_id) {
3867                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3868                         struct cfg80211_chan_def chandef = {};
3869                         int ret;
3870
3871                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3872                                 goto nla_put_failure;
3873                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3874                                     wdev->links[link_id].addr))
3875                                 goto nla_put_failure;
3876
3877                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3878                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3879                                 goto nla_put_failure;
3880
3881                         nla_nest_end(msg, link);
3882                 }
3883
3884                 nla_nest_end(msg, links);
3885         }
3886
3887         genlmsg_end(msg, hdr);
3888         return 0;
3889
3890  nla_put_failure_locked:
3891         wdev_unlock(wdev);
3892  nla_put_failure:
3893         genlmsg_cancel(msg, hdr);
3894         return -EMSGSIZE;
3895 }
3896
3897 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3898 {
3899         int wp_idx = 0;
3900         int if_idx = 0;
3901         int wp_start = cb->args[0];
3902         int if_start = cb->args[1];
3903         int filter_wiphy = -1;
3904         struct cfg80211_registered_device *rdev;
3905         struct wireless_dev *wdev;
3906         int ret;
3907
3908         rtnl_lock();
3909         if (!cb->args[2]) {
3910                 struct nl80211_dump_wiphy_state state = {
3911                         .filter_wiphy = -1,
3912                 };
3913
3914                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3915                 if (ret)
3916                         goto out_unlock;
3917
3918                 filter_wiphy = state.filter_wiphy;
3919
3920                 /*
3921                  * if filtering, set cb->args[2] to +1 since 0 is the default
3922                  * value needed to determine that parsing is necessary.
3923                  */
3924                 if (filter_wiphy >= 0)
3925                         cb->args[2] = filter_wiphy + 1;
3926                 else
3927                         cb->args[2] = -1;
3928         } else if (cb->args[2] > 0) {
3929                 filter_wiphy = cb->args[2] - 1;
3930         }
3931
3932         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3933                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3934                         continue;
3935                 if (wp_idx < wp_start) {
3936                         wp_idx++;
3937                         continue;
3938                 }
3939
3940                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3941                         continue;
3942
3943                 if_idx = 0;
3944
3945                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3946                         if (if_idx < if_start) {
3947                                 if_idx++;
3948                                 continue;
3949                         }
3950                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3951                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3952                                                rdev, wdev,
3953                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3954                                 goto out;
3955                         }
3956                         if_idx++;
3957                 }
3958
3959                 wp_idx++;
3960         }
3961  out:
3962         cb->args[0] = wp_idx;
3963         cb->args[1] = if_idx;
3964
3965         ret = skb->len;
3966  out_unlock:
3967         rtnl_unlock();
3968
3969         return ret;
3970 }
3971
3972 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3973 {
3974         struct sk_buff *msg;
3975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3976         struct wireless_dev *wdev = info->user_ptr[1];
3977
3978         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3979         if (!msg)
3980                 return -ENOMEM;
3981
3982         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3983                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3984                 nlmsg_free(msg);
3985                 return -ENOBUFS;
3986         }
3987
3988         return genlmsg_reply(msg, info);
3989 }
3990
3991 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3992         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3993         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3994         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3995         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3996         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3997         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3998 };
3999
4000 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4001 {
4002         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4003         int flag;
4004
4005         *mntrflags = 0;
4006
4007         if (!nla)
4008                 return -EINVAL;
4009
4010         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4011                 return -EINVAL;
4012
4013         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4014                 if (flags[flag])
4015                         *mntrflags |= (1<<flag);
4016
4017         *mntrflags |= MONITOR_FLAG_CHANGED;
4018
4019         return 0;
4020 }
4021
4022 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4023                                      enum nl80211_iftype type,
4024                                      struct genl_info *info,
4025                                      struct vif_params *params)
4026 {
4027         bool change = false;
4028         int err;
4029
4030         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4031                 if (type != NL80211_IFTYPE_MONITOR)
4032                         return -EINVAL;
4033
4034                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4035                                           &params->flags);
4036                 if (err)
4037                         return err;
4038
4039                 change = true;
4040         }
4041
4042         if (params->flags & MONITOR_FLAG_ACTIVE &&
4043             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4044                 return -EOPNOTSUPP;
4045
4046         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4047                 const u8 *mumimo_groups;
4048                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4049
4050                 if (type != NL80211_IFTYPE_MONITOR)
4051                         return -EINVAL;
4052
4053                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4054                         return -EOPNOTSUPP;
4055
4056                 mumimo_groups =
4057                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4058
4059                 /* bits 0 and 63 are reserved and must be zero */
4060                 if ((mumimo_groups[0] & BIT(0)) ||
4061                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4062                         return -EINVAL;
4063
4064                 params->vht_mumimo_groups = mumimo_groups;
4065                 change = true;
4066         }
4067
4068         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4069                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4070
4071                 if (type != NL80211_IFTYPE_MONITOR)
4072                         return -EINVAL;
4073
4074                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4075                         return -EOPNOTSUPP;
4076
4077                 params->vht_mumimo_follow_addr =
4078                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4079                 change = true;
4080         }
4081
4082         return change ? 1 : 0;
4083 }
4084
4085 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4086                                struct net_device *netdev, u8 use_4addr,
4087                                enum nl80211_iftype iftype)
4088 {
4089         if (!use_4addr) {
4090                 if (netdev && netif_is_bridge_port(netdev))
4091                         return -EBUSY;
4092                 return 0;
4093         }
4094
4095         switch (iftype) {
4096         case NL80211_IFTYPE_AP_VLAN:
4097                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4098                         return 0;
4099                 break;
4100         case NL80211_IFTYPE_STATION:
4101                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4102                         return 0;
4103                 break;
4104         default:
4105                 break;
4106         }
4107
4108         return -EOPNOTSUPP;
4109 }
4110
4111 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4112 {
4113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4114         struct vif_params params;
4115         int err;
4116         enum nl80211_iftype otype, ntype;
4117         struct net_device *dev = info->user_ptr[1];
4118         bool change = false;
4119
4120         memset(&params, 0, sizeof(params));
4121
4122         otype = ntype = dev->ieee80211_ptr->iftype;
4123
4124         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4125                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4126                 if (otype != ntype)
4127                         change = true;
4128         }
4129
4130         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4131                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4132
4133                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4134                         return -EINVAL;
4135                 if (netif_running(dev))
4136                         return -EBUSY;
4137
4138                 wdev_lock(wdev);
4139                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4140                              IEEE80211_MAX_MESH_ID_LEN);
4141                 wdev->u.mesh.id_up_len =
4142                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4143                 memcpy(wdev->u.mesh.id,
4144                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4145                        wdev->u.mesh.id_up_len);
4146                 wdev_unlock(wdev);
4147         }
4148
4149         if (info->attrs[NL80211_ATTR_4ADDR]) {
4150                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4151                 change = true;
4152                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4153                 if (err)
4154                         return err;
4155         } else {
4156                 params.use_4addr = -1;
4157         }
4158
4159         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4160         if (err < 0)
4161                 return err;
4162         if (err > 0)
4163                 change = true;
4164
4165         if (change)
4166                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4167         else
4168                 err = 0;
4169
4170         if (!err && params.use_4addr != -1)
4171                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4172
4173         if (change && !err) {
4174                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4175
4176                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4177         }
4178
4179         return err;
4180 }
4181
4182 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4183 {
4184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4185         struct vif_params params;
4186         struct wireless_dev *wdev;
4187         struct sk_buff *msg;
4188         int err;
4189         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4190
4191         memset(&params, 0, sizeof(params));
4192
4193         if (!info->attrs[NL80211_ATTR_IFNAME])
4194                 return -EINVAL;
4195
4196         if (info->attrs[NL80211_ATTR_IFTYPE])
4197                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4198
4199         if (!rdev->ops->add_virtual_intf)
4200                 return -EOPNOTSUPP;
4201
4202         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4203              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4204             info->attrs[NL80211_ATTR_MAC]) {
4205                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4206                            ETH_ALEN);
4207                 if (!is_valid_ether_addr(params.macaddr))
4208                         return -EADDRNOTAVAIL;
4209         }
4210
4211         if (info->attrs[NL80211_ATTR_4ADDR]) {
4212                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4213                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4214                 if (err)
4215                         return err;
4216         }
4217
4218         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4219                 return -EOPNOTSUPP;
4220
4221         err = nl80211_parse_mon_options(rdev, type, info, &params);
4222         if (err < 0)
4223                 return err;
4224
4225         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4226         if (!msg)
4227                 return -ENOMEM;
4228
4229         wdev = rdev_add_virtual_intf(rdev,
4230                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4231                                 NET_NAME_USER, type, &params);
4232         if (WARN_ON(!wdev)) {
4233                 nlmsg_free(msg);
4234                 return -EPROTO;
4235         } else if (IS_ERR(wdev)) {
4236                 nlmsg_free(msg);
4237                 return PTR_ERR(wdev);
4238         }
4239
4240         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4241                 wdev->owner_nlportid = info->snd_portid;
4242
4243         switch (type) {
4244         case NL80211_IFTYPE_MESH_POINT:
4245                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4246                         break;
4247                 wdev_lock(wdev);
4248                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4249                              IEEE80211_MAX_MESH_ID_LEN);
4250                 wdev->u.mesh.id_up_len =
4251                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4252                 memcpy(wdev->u.mesh.id,
4253                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4254                        wdev->u.mesh.id_up_len);
4255                 wdev_unlock(wdev);
4256                 break;
4257         case NL80211_IFTYPE_NAN:
4258         case NL80211_IFTYPE_P2P_DEVICE:
4259                 /*
4260                  * P2P Device and NAN do not have a netdev, so don't go
4261                  * through the netdev notifier and must be added here
4262                  */
4263                 cfg80211_init_wdev(wdev);
4264                 cfg80211_register_wdev(rdev, wdev);
4265                 break;
4266         default:
4267                 break;
4268         }
4269
4270         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4271                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4272                 nlmsg_free(msg);
4273                 return -ENOBUFS;
4274         }
4275
4276         return genlmsg_reply(msg, info);
4277 }
4278
4279 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4280 {
4281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4282         int ret;
4283
4284         /* to avoid failing a new interface creation due to pending removal */
4285         cfg80211_destroy_ifaces(rdev);
4286
4287         wiphy_lock(&rdev->wiphy);
4288         ret = _nl80211_new_interface(skb, info);
4289         wiphy_unlock(&rdev->wiphy);
4290
4291         return ret;
4292 }
4293
4294 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4295 {
4296         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4297         struct wireless_dev *wdev = info->user_ptr[1];
4298
4299         if (!rdev->ops->del_virtual_intf)
4300                 return -EOPNOTSUPP;
4301
4302         /*
4303          * We hold RTNL, so this is safe, without RTNL opencount cannot
4304          * reach 0, and thus the rdev cannot be deleted.
4305          *
4306          * We need to do it for the dev_close(), since that will call
4307          * the netdev notifiers, and we need to acquire the mutex there
4308          * but don't know if we get there from here or from some other
4309          * place (e.g. "ip link set ... down").
4310          */
4311         mutex_unlock(&rdev->wiphy.mtx);
4312
4313         /*
4314          * If we remove a wireless device without a netdev then clear
4315          * user_ptr[1] so that nl80211_post_doit won't dereference it
4316          * to check if it needs to do dev_put(). Otherwise it crashes
4317          * since the wdev has been freed, unlike with a netdev where
4318          * we need the dev_put() for the netdev to really be freed.
4319          */
4320         if (!wdev->netdev)
4321                 info->user_ptr[1] = NULL;
4322         else
4323                 dev_close(wdev->netdev);
4324
4325         mutex_lock(&rdev->wiphy.mtx);
4326
4327         return cfg80211_remove_virtual_intf(rdev, wdev);
4328 }
4329
4330 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4331 {
4332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4333         struct net_device *dev = info->user_ptr[1];
4334         u16 noack_map;
4335
4336         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4337                 return -EINVAL;
4338
4339         if (!rdev->ops->set_noack_map)
4340                 return -EOPNOTSUPP;
4341
4342         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4343
4344         return rdev_set_noack_map(rdev, dev, noack_map);
4345 }
4346
4347 static int nl80211_validate_key_link_id(struct genl_info *info,
4348                                         struct wireless_dev *wdev,
4349                                         int link_id, bool pairwise)
4350 {
4351         if (pairwise) {
4352                 if (link_id != -1) {
4353                         GENL_SET_ERR_MSG(info,
4354                                          "link ID not allowed for pairwise key");
4355                         return -EINVAL;
4356                 }
4357
4358                 return 0;
4359         }
4360
4361         if (wdev->valid_links) {
4362                 if (link_id == -1) {
4363                         GENL_SET_ERR_MSG(info,
4364                                          "link ID must for MLO group key");
4365                         return -EINVAL;
4366                 }
4367                 if (!(wdev->valid_links & BIT(link_id))) {
4368                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4369                         return -EINVAL;
4370                 }
4371         } else if (link_id != -1) {
4372                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4373                 return -EINVAL;
4374         }
4375
4376         return 0;
4377 }
4378
4379 struct get_key_cookie {
4380         struct sk_buff *msg;
4381         int error;
4382         int idx;
4383 };
4384
4385 static void get_key_callback(void *c, struct key_params *params)
4386 {
4387         struct nlattr *key;
4388         struct get_key_cookie *cookie = c;
4389
4390         if ((params->key &&
4391              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4392                      params->key_len, params->key)) ||
4393             (params->seq &&
4394              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4395                      params->seq_len, params->seq)) ||
4396             (params->cipher &&
4397              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4398                          params->cipher)))
4399                 goto nla_put_failure;
4400
4401         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4402         if (!key)
4403                 goto nla_put_failure;
4404
4405         if ((params->key &&
4406              nla_put(cookie->msg, NL80211_KEY_DATA,
4407                      params->key_len, params->key)) ||
4408             (params->seq &&
4409              nla_put(cookie->msg, NL80211_KEY_SEQ,
4410                      params->seq_len, params->seq)) ||
4411             (params->cipher &&
4412              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4413                          params->cipher)))
4414                 goto nla_put_failure;
4415
4416         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4417                 goto nla_put_failure;
4418
4419         nla_nest_end(cookie->msg, key);
4420
4421         return;
4422  nla_put_failure:
4423         cookie->error = 1;
4424 }
4425
4426 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4427 {
4428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4429         int err;
4430         struct net_device *dev = info->user_ptr[1];
4431         u8 key_idx = 0;
4432         const u8 *mac_addr = NULL;
4433         bool pairwise;
4434         struct get_key_cookie cookie = {
4435                 .error = 0,
4436         };
4437         void *hdr;
4438         struct sk_buff *msg;
4439         bool bigtk_support = false;
4440         int link_id = nl80211_link_id_or_invalid(info->attrs);
4441         struct wireless_dev *wdev = dev->ieee80211_ptr;
4442
4443         if (wiphy_ext_feature_isset(&rdev->wiphy,
4444                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4445                 bigtk_support = true;
4446
4447         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4448              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4449             wiphy_ext_feature_isset(&rdev->wiphy,
4450                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4451                 bigtk_support = true;
4452
4453         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4454                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4455
4456                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4457                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4458                         return -EINVAL;
4459                 }
4460         }
4461
4462         if (info->attrs[NL80211_ATTR_MAC])
4463                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4464
4465         pairwise = !!mac_addr;
4466         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4467                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4468
4469                 if (kt != NL80211_KEYTYPE_GROUP &&
4470                     kt != NL80211_KEYTYPE_PAIRWISE)
4471                         return -EINVAL;
4472                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4473         }
4474
4475         if (!rdev->ops->get_key)
4476                 return -EOPNOTSUPP;
4477
4478         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4479                 return -ENOENT;
4480
4481         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4482         if (!msg)
4483                 return -ENOMEM;
4484
4485         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4486                              NL80211_CMD_NEW_KEY);
4487         if (!hdr)
4488                 goto nla_put_failure;
4489
4490         cookie.msg = msg;
4491         cookie.idx = key_idx;
4492
4493         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4494             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4495                 goto nla_put_failure;
4496         if (mac_addr &&
4497             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4498                 goto nla_put_failure;
4499
4500         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4501         if (err)
4502                 goto free_msg;
4503
4504         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4505                            &cookie, get_key_callback);
4506
4507         if (err)
4508                 goto free_msg;
4509
4510         if (cookie.error)
4511                 goto nla_put_failure;
4512
4513         genlmsg_end(msg, hdr);
4514         return genlmsg_reply(msg, info);
4515
4516  nla_put_failure:
4517         err = -ENOBUFS;
4518  free_msg:
4519         nlmsg_free(msg);
4520         return err;
4521 }
4522
4523 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4524 {
4525         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4526         struct key_parse key;
4527         int err;
4528         struct net_device *dev = info->user_ptr[1];
4529         int link_id = nl80211_link_id_or_invalid(info->attrs);
4530         struct wireless_dev *wdev = dev->ieee80211_ptr;
4531
4532         err = nl80211_parse_key(info, &key);
4533         if (err)
4534                 return err;
4535
4536         if (key.idx < 0)
4537                 return -EINVAL;
4538
4539         /* Only support setting default key and
4540          * Extended Key ID action NL80211_KEY_SET_TX.
4541          */
4542         if (!key.def && !key.defmgmt && !key.defbeacon &&
4543             !(key.p.mode == NL80211_KEY_SET_TX))
4544                 return -EINVAL;
4545
4546         wdev_lock(wdev);
4547
4548         if (key.def) {
4549                 if (!rdev->ops->set_default_key) {
4550                         err = -EOPNOTSUPP;
4551                         goto out;
4552                 }
4553
4554                 err = nl80211_key_allowed(wdev);
4555                 if (err)
4556                         goto out;
4557
4558                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4559                 if (err)
4560                         goto out;
4561
4562                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4563                                            key.def_uni, key.def_multi);
4564
4565                 if (err)
4566                         goto out;
4567
4568 #ifdef CONFIG_CFG80211_WEXT
4569                 wdev->wext.default_key = key.idx;
4570 #endif
4571         } else if (key.defmgmt) {
4572                 if (key.def_uni || !key.def_multi) {
4573                         err = -EINVAL;
4574                         goto out;
4575                 }
4576
4577                 if (!rdev->ops->set_default_mgmt_key) {
4578                         err = -EOPNOTSUPP;
4579                         goto out;
4580                 }
4581
4582                 err = nl80211_key_allowed(wdev);
4583                 if (err)
4584                         goto out;
4585
4586                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4587                 if (err)
4588                         goto out;
4589
4590                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4591                 if (err)
4592                         goto out;
4593
4594 #ifdef CONFIG_CFG80211_WEXT
4595                 wdev->wext.default_mgmt_key = key.idx;
4596 #endif
4597         } else if (key.defbeacon) {
4598                 if (key.def_uni || !key.def_multi) {
4599                         err = -EINVAL;
4600                         goto out;
4601                 }
4602
4603                 if (!rdev->ops->set_default_beacon_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_beacon_key(rdev, dev, link_id, key.idx);
4617                 if (err)
4618                         goto out;
4619         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4620                    wiphy_ext_feature_isset(&rdev->wiphy,
4621                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4622                 u8 *mac_addr = NULL;
4623
4624                 if (info->attrs[NL80211_ATTR_MAC])
4625                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4626
4627                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4628                         err = -EINVAL;
4629                         goto out;
4630                 }
4631
4632                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4633                 if (err)
4634                         goto out;
4635
4636                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4637                                    NL80211_KEYTYPE_PAIRWISE,
4638                                    mac_addr, &key.p);
4639         } else {
4640                 err = -EINVAL;
4641         }
4642  out:
4643         wdev_unlock(wdev);
4644
4645         return err;
4646 }
4647
4648 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4649 {
4650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4651         int err;
4652         struct net_device *dev = info->user_ptr[1];
4653         struct key_parse key;
4654         const u8 *mac_addr = NULL;
4655         int link_id = nl80211_link_id_or_invalid(info->attrs);
4656         struct wireless_dev *wdev = dev->ieee80211_ptr;
4657
4658         err = nl80211_parse_key(info, &key);
4659         if (err)
4660                 return err;
4661
4662         if (!key.p.key) {
4663                 GENL_SET_ERR_MSG(info, "no key");
4664                 return -EINVAL;
4665         }
4666
4667         if (info->attrs[NL80211_ATTR_MAC])
4668                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4669
4670         if (key.type == -1) {
4671                 if (mac_addr)
4672                         key.type = NL80211_KEYTYPE_PAIRWISE;
4673                 else
4674                         key.type = NL80211_KEYTYPE_GROUP;
4675         }
4676
4677         /* for now */
4678         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4679             key.type != NL80211_KEYTYPE_GROUP) {
4680                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4681                 return -EINVAL;
4682         }
4683
4684         if (key.type == NL80211_KEYTYPE_GROUP &&
4685             info->attrs[NL80211_ATTR_VLAN_ID])
4686                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4687
4688         if (!rdev->ops->add_key)
4689                 return -EOPNOTSUPP;
4690
4691         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4692                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4693                                            mac_addr)) {
4694                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4695                 return -EINVAL;
4696         }
4697
4698         wdev_lock(wdev);
4699         err = nl80211_key_allowed(wdev);
4700         if (err)
4701                 GENL_SET_ERR_MSG(info, "key not allowed");
4702
4703         if (!err)
4704                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4705                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4706
4707         if (!err) {
4708                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4709                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4710                                     mac_addr, &key.p);
4711                 if (err)
4712                         GENL_SET_ERR_MSG(info, "key addition failed");
4713         }
4714         wdev_unlock(wdev);
4715
4716         return err;
4717 }
4718
4719 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4720 {
4721         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4722         int err;
4723         struct net_device *dev = info->user_ptr[1];
4724         u8 *mac_addr = NULL;
4725         struct key_parse key;
4726         int link_id = nl80211_link_id_or_invalid(info->attrs);
4727         struct wireless_dev *wdev = dev->ieee80211_ptr;
4728
4729         err = nl80211_parse_key(info, &key);
4730         if (err)
4731                 return err;
4732
4733         if (info->attrs[NL80211_ATTR_MAC])
4734                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4735
4736         if (key.type == -1) {
4737                 if (mac_addr)
4738                         key.type = NL80211_KEYTYPE_PAIRWISE;
4739                 else
4740                         key.type = NL80211_KEYTYPE_GROUP;
4741         }
4742
4743         /* for now */
4744         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4745             key.type != NL80211_KEYTYPE_GROUP)
4746                 return -EINVAL;
4747
4748         if (!cfg80211_valid_key_idx(rdev, key.idx,
4749                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4750                 return -EINVAL;
4751
4752         if (!rdev->ops->del_key)
4753                 return -EOPNOTSUPP;
4754
4755         wdev_lock(wdev);
4756         err = nl80211_key_allowed(wdev);
4757
4758         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4759             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4760                 err = -ENOENT;
4761
4762         if (!err)
4763                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4764                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4765
4766         if (!err)
4767                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4768                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4769                                    mac_addr);
4770
4771 #ifdef CONFIG_CFG80211_WEXT
4772         if (!err) {
4773                 if (key.idx == wdev->wext.default_key)
4774                         wdev->wext.default_key = -1;
4775                 else if (key.idx == wdev->wext.default_mgmt_key)
4776                         wdev->wext.default_mgmt_key = -1;
4777         }
4778 #endif
4779         wdev_unlock(wdev);
4780
4781         return err;
4782 }
4783
4784 /* This function returns an error or the number of nested attributes */
4785 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4786 {
4787         struct nlattr *attr;
4788         int n_entries = 0, tmp;
4789
4790         nla_for_each_nested(attr, nl_attr, tmp) {
4791                 if (nla_len(attr) != ETH_ALEN)
4792                         return -EINVAL;
4793
4794                 n_entries++;
4795         }
4796
4797         return n_entries;
4798 }
4799
4800 /*
4801  * This function parses ACL information and allocates memory for ACL data.
4802  * On successful return, the calling function is responsible to free the
4803  * ACL buffer returned by this function.
4804  */
4805 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4806                                                 struct genl_info *info)
4807 {
4808         enum nl80211_acl_policy acl_policy;
4809         struct nlattr *attr;
4810         struct cfg80211_acl_data *acl;
4811         int i = 0, n_entries, tmp;
4812
4813         if (!wiphy->max_acl_mac_addrs)
4814                 return ERR_PTR(-EOPNOTSUPP);
4815
4816         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4817                 return ERR_PTR(-EINVAL);
4818
4819         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4820         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4821             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4822                 return ERR_PTR(-EINVAL);
4823
4824         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4825                 return ERR_PTR(-EINVAL);
4826
4827         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4828         if (n_entries < 0)
4829                 return ERR_PTR(n_entries);
4830
4831         if (n_entries > wiphy->max_acl_mac_addrs)
4832                 return ERR_PTR(-ENOTSUPP);
4833
4834         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4835         if (!acl)
4836                 return ERR_PTR(-ENOMEM);
4837
4838         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4839                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4840                 i++;
4841         }
4842
4843         acl->n_acl_entries = n_entries;
4844         acl->acl_policy = acl_policy;
4845
4846         return acl;
4847 }
4848
4849 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4850 {
4851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4852         struct net_device *dev = info->user_ptr[1];
4853         struct cfg80211_acl_data *acl;
4854         int err;
4855
4856         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4857             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4858                 return -EOPNOTSUPP;
4859
4860         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4861                 return -EINVAL;
4862
4863         acl = parse_acl_data(&rdev->wiphy, info);
4864         if (IS_ERR(acl))
4865                 return PTR_ERR(acl);
4866
4867         err = rdev_set_mac_acl(rdev, dev, acl);
4868
4869         kfree(acl);
4870
4871         return err;
4872 }
4873
4874 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4875                            u8 *rates, u8 rates_len)
4876 {
4877         u8 i;
4878         u32 mask = 0;
4879
4880         for (i = 0; i < rates_len; i++) {
4881                 int rate = (rates[i] & 0x7f) * 5;
4882                 int ridx;
4883
4884                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4885                         struct ieee80211_rate *srate =
4886                                 &sband->bitrates[ridx];
4887                         if (rate == srate->bitrate) {
4888                                 mask |= 1 << ridx;
4889                                 break;
4890                         }
4891                 }
4892                 if (ridx == sband->n_bitrates)
4893                         return 0; /* rate not found */
4894         }
4895
4896         return mask;
4897 }
4898
4899 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4900                                u8 *rates, u8 rates_len,
4901                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4902 {
4903         u8 i;
4904
4905         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4906
4907         for (i = 0; i < rates_len; i++) {
4908                 int ridx, rbit;
4909
4910                 ridx = rates[i] / 8;
4911                 rbit = BIT(rates[i] % 8);
4912
4913                 /* check validity */
4914                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4915                         return false;
4916
4917                 /* check availability */
4918                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4919                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4920                         mcs[ridx] |= rbit;
4921                 else
4922                         return false;
4923         }
4924
4925         return true;
4926 }
4927
4928 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4929 {
4930         u16 mcs_mask = 0;
4931
4932         switch (vht_mcs_map) {
4933         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4934                 break;
4935         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4936                 mcs_mask = 0x00FF;
4937                 break;
4938         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4939                 mcs_mask = 0x01FF;
4940                 break;
4941         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4942                 mcs_mask = 0x03FF;
4943                 break;
4944         default:
4945                 break;
4946         }
4947
4948         return mcs_mask;
4949 }
4950
4951 static void vht_build_mcs_mask(u16 vht_mcs_map,
4952                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4953 {
4954         u8 nss;
4955
4956         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4957                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4958                 vht_mcs_map >>= 2;
4959         }
4960 }
4961
4962 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4963                              struct nl80211_txrate_vht *txrate,
4964                              u16 mcs[NL80211_VHT_NSS_MAX])
4965 {
4966         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4967         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4968         u8 i;
4969
4970         if (!sband->vht_cap.vht_supported)
4971                 return false;
4972
4973         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4974
4975         /* Build vht_mcs_mask from VHT capabilities */
4976         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4977
4978         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4979                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4980                         mcs[i] = txrate->mcs[i];
4981                 else
4982                         return false;
4983         }
4984
4985         return true;
4986 }
4987
4988 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4989 {
4990         switch (he_mcs_map) {
4991         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4992                 return 0;
4993         case IEEE80211_HE_MCS_SUPPORT_0_7:
4994                 return 0x00FF;
4995         case IEEE80211_HE_MCS_SUPPORT_0_9:
4996                 return 0x03FF;
4997         case IEEE80211_HE_MCS_SUPPORT_0_11:
4998                 return 0xFFF;
4999         default:
5000                 break;
5001         }
5002         return 0;
5003 }
5004
5005 static void he_build_mcs_mask(u16 he_mcs_map,
5006                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5007 {
5008         u8 nss;
5009
5010         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5011                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5012                 he_mcs_map >>= 2;
5013         }
5014 }
5015
5016 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5017                            const struct ieee80211_sta_he_cap *he_cap)
5018 {
5019         struct net_device *dev = info->user_ptr[1];
5020         struct wireless_dev *wdev = dev->ieee80211_ptr;
5021         struct cfg80211_chan_def *chandef;
5022         __le16 tx_mcs;
5023
5024         chandef = wdev_chandef(wdev, link_id);
5025         if (!chandef) {
5026                 /*
5027                  * This is probably broken, but we never maintained
5028                  * a chandef in these cases, so it always was.
5029                  */
5030                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5031         }
5032
5033         switch (chandef->width) {
5034         case NL80211_CHAN_WIDTH_80P80:
5035                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5036                 break;
5037         case NL80211_CHAN_WIDTH_160:
5038                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5039                 break;
5040         default:
5041                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5042                 break;
5043         }
5044
5045         return le16_to_cpu(tx_mcs);
5046 }
5047
5048 static bool he_set_mcs_mask(struct genl_info *info,
5049                             struct wireless_dev *wdev,
5050                             struct ieee80211_supported_band *sband,
5051                             struct nl80211_txrate_he *txrate,
5052                             u16 mcs[NL80211_HE_NSS_MAX],
5053                             unsigned int link_id)
5054 {
5055         const struct ieee80211_sta_he_cap *he_cap;
5056         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5057         u16 tx_mcs_map = 0;
5058         u8 i;
5059
5060         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5061         if (!he_cap)
5062                 return false;
5063
5064         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5065
5066         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5067
5068         /* Build he_mcs_mask from HE capabilities */
5069         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5070
5071         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5072                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5073                         mcs[i] = txrate->mcs[i];
5074                 else
5075                         return false;
5076         }
5077
5078         return true;
5079 }
5080
5081 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5082                                          struct nlattr *attrs[],
5083                                          enum nl80211_attrs attr,
5084                                          struct cfg80211_bitrate_mask *mask,
5085                                          struct net_device *dev,
5086                                          bool default_all_enabled,
5087                                          unsigned int link_id)
5088 {
5089         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5090         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5091         struct wireless_dev *wdev = dev->ieee80211_ptr;
5092         int rem, i;
5093         struct nlattr *tx_rates;
5094         struct ieee80211_supported_band *sband;
5095         u16 vht_tx_mcs_map, he_tx_mcs_map;
5096
5097         memset(mask, 0, sizeof(*mask));
5098         /* Default to all rates enabled */
5099         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5100                 const struct ieee80211_sta_he_cap *he_cap;
5101
5102                 if (!default_all_enabled)
5103                         break;
5104
5105                 sband = rdev->wiphy.bands[i];
5106
5107                 if (!sband)
5108                         continue;
5109
5110                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5111                 memcpy(mask->control[i].ht_mcs,
5112                        sband->ht_cap.mcs.rx_mask,
5113                        sizeof(mask->control[i].ht_mcs));
5114
5115                 if (sband->vht_cap.vht_supported) {
5116                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5117                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5118                 }
5119
5120                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5121                 if (!he_cap)
5122                         continue;
5123
5124                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5125                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5126
5127                 mask->control[i].he_gi = 0xFF;
5128                 mask->control[i].he_ltf = 0xFF;
5129         }
5130
5131         /* if no rates are given set it back to the defaults */
5132         if (!attrs[attr])
5133                 goto out;
5134
5135         /* The nested attribute uses enum nl80211_band as the index. This maps
5136          * directly to the enum nl80211_band values used in cfg80211.
5137          */
5138         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5139         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5140                 enum nl80211_band band = nla_type(tx_rates);
5141                 int err;
5142
5143                 if (band < 0 || band >= NUM_NL80211_BANDS)
5144                         return -EINVAL;
5145                 sband = rdev->wiphy.bands[band];
5146                 if (sband == NULL)
5147                         return -EINVAL;
5148                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5149                                                   tx_rates,
5150                                                   nl80211_txattr_policy,
5151                                                   info->extack);
5152                 if (err)
5153                         return err;
5154                 if (tb[NL80211_TXRATE_LEGACY]) {
5155                         mask->control[band].legacy = rateset_to_mask(
5156                                 sband,
5157                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5158                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5159                         if ((mask->control[band].legacy == 0) &&
5160                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5161                                 return -EINVAL;
5162                 }
5163                 if (tb[NL80211_TXRATE_HT]) {
5164                         if (!ht_rateset_to_mask(
5165                                         sband,
5166                                         nla_data(tb[NL80211_TXRATE_HT]),
5167                                         nla_len(tb[NL80211_TXRATE_HT]),
5168                                         mask->control[band].ht_mcs))
5169                                 return -EINVAL;
5170                 }
5171
5172                 if (tb[NL80211_TXRATE_VHT]) {
5173                         if (!vht_set_mcs_mask(
5174                                         sband,
5175                                         nla_data(tb[NL80211_TXRATE_VHT]),
5176                                         mask->control[band].vht_mcs))
5177                                 return -EINVAL;
5178                 }
5179
5180                 if (tb[NL80211_TXRATE_GI]) {
5181                         mask->control[band].gi =
5182                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5183                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5184                                 return -EINVAL;
5185                 }
5186                 if (tb[NL80211_TXRATE_HE] &&
5187                     !he_set_mcs_mask(info, wdev, sband,
5188                                      nla_data(tb[NL80211_TXRATE_HE]),
5189                                      mask->control[band].he_mcs,
5190                                      link_id))
5191                         return -EINVAL;
5192
5193                 if (tb[NL80211_TXRATE_HE_GI])
5194                         mask->control[band].he_gi =
5195                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5196                 if (tb[NL80211_TXRATE_HE_LTF])
5197                         mask->control[band].he_ltf =
5198                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5199
5200                 if (mask->control[band].legacy == 0) {
5201                         /* don't allow empty legacy rates if HT, VHT or HE
5202                          * are not even supported.
5203                          */
5204                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5205                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5206                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5207                                 return -EINVAL;
5208
5209                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5210                                 if (mask->control[band].ht_mcs[i])
5211                                         goto out;
5212
5213                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5214                                 if (mask->control[band].vht_mcs[i])
5215                                         goto out;
5216
5217                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5218                                 if (mask->control[band].he_mcs[i])
5219                                         goto out;
5220
5221                         /* legacy and mcs rates may not be both empty */
5222                         return -EINVAL;
5223                 }
5224         }
5225
5226 out:
5227         return 0;
5228 }
5229
5230 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5231                                    enum nl80211_band band,
5232                                    struct cfg80211_bitrate_mask *beacon_rate)
5233 {
5234         u32 count_ht, count_vht, count_he, i;
5235         u32 rate = beacon_rate->control[band].legacy;
5236
5237         /* Allow only one rate */
5238         if (hweight32(rate) > 1)
5239                 return -EINVAL;
5240
5241         count_ht = 0;
5242         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5243                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5244                         return -EINVAL;
5245                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5246                         count_ht++;
5247                         if (count_ht > 1)
5248                                 return -EINVAL;
5249                 }
5250                 if (count_ht && rate)
5251                         return -EINVAL;
5252         }
5253
5254         count_vht = 0;
5255         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5256                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5257                         return -EINVAL;
5258                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5259                         count_vht++;
5260                         if (count_vht > 1)
5261                                 return -EINVAL;
5262                 }
5263                 if (count_vht && rate)
5264                         return -EINVAL;
5265         }
5266
5267         count_he = 0;
5268         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5269                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5270                         return -EINVAL;
5271                 } else if (beacon_rate->control[band].he_mcs[i]) {
5272                         count_he++;
5273                         if (count_he > 1)
5274                                 return -EINVAL;
5275                 }
5276                 if (count_he && rate)
5277                         return -EINVAL;
5278         }
5279
5280         if ((count_ht && count_vht && count_he) ||
5281             (!rate && !count_ht && !count_vht && !count_he))
5282                 return -EINVAL;
5283
5284         if (rate &&
5285             !wiphy_ext_feature_isset(&rdev->wiphy,
5286                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5287                 return -EINVAL;
5288         if (count_ht &&
5289             !wiphy_ext_feature_isset(&rdev->wiphy,
5290                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5291                 return -EINVAL;
5292         if (count_vht &&
5293             !wiphy_ext_feature_isset(&rdev->wiphy,
5294                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5295                 return -EINVAL;
5296         if (count_he &&
5297             !wiphy_ext_feature_isset(&rdev->wiphy,
5298                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5299                 return -EINVAL;
5300
5301         return 0;
5302 }
5303
5304 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5305                                        struct net_device *dev,
5306                                        struct nlattr *attrs,
5307                                        struct cfg80211_mbssid_config *config,
5308                                        u8 num_elems)
5309 {
5310         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5311
5312         if (!wiphy->mbssid_max_interfaces)
5313                 return -EOPNOTSUPP;
5314
5315         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5316                              NULL) ||
5317             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5318                 return -EINVAL;
5319
5320         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5321         if (config->ema) {
5322                 if (!wiphy->ema_max_profile_periodicity)
5323                         return -EOPNOTSUPP;
5324
5325                 if (num_elems > wiphy->ema_max_profile_periodicity)
5326                         return -EINVAL;
5327         }
5328
5329         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5330         if (config->index >= wiphy->mbssid_max_interfaces ||
5331             (!config->index && !num_elems))
5332                 return -EINVAL;
5333
5334         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5335                 u32 tx_ifindex =
5336                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5337
5338                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5339                     (config->index && tx_ifindex == dev->ifindex))
5340                         return -EINVAL;
5341
5342                 if (tx_ifindex != dev->ifindex) {
5343                         struct net_device *tx_netdev =
5344                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5345
5346                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5347                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5348                             tx_netdev->ieee80211_ptr->iftype !=
5349                                                         NL80211_IFTYPE_AP) {
5350                                 dev_put(tx_netdev);
5351                                 return -EINVAL;
5352                         }
5353
5354                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5355                 } else {
5356                         config->tx_wdev = dev->ieee80211_ptr;
5357                 }
5358         } else if (!config->index) {
5359                 config->tx_wdev = dev->ieee80211_ptr;
5360         } else {
5361                 return -EINVAL;
5362         }
5363
5364         return 0;
5365 }
5366
5367 static struct cfg80211_mbssid_elems *
5368 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5369 {
5370         struct nlattr *nl_elems;
5371         struct cfg80211_mbssid_elems *elems;
5372         int rem_elems;
5373         u8 i = 0, num_elems = 0;
5374
5375         if (!wiphy->mbssid_max_interfaces)
5376                 return ERR_PTR(-EINVAL);
5377
5378         nla_for_each_nested(nl_elems, attrs, rem_elems)
5379                 num_elems++;
5380
5381         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5382         if (!elems)
5383                 return ERR_PTR(-ENOMEM);
5384
5385         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5386                 elems->elem[i].data = nla_data(nl_elems);
5387                 elems->elem[i].len = nla_len(nl_elems);
5388                 i++;
5389         }
5390         elems->cnt = num_elems;
5391         return elems;
5392 }
5393
5394 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5395                                       struct cfg80211_he_bss_color *he_bss_color)
5396 {
5397         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5398         int err;
5399
5400         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5401                                he_bss_color_policy, NULL);
5402         if (err)
5403                 return err;
5404
5405         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5406                 return -EINVAL;
5407
5408         he_bss_color->color =
5409                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5410         he_bss_color->enabled =
5411                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5412         he_bss_color->partial =
5413                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5414
5415         return 0;
5416 }
5417
5418 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5419                                 struct nlattr *attrs[],
5420                                 struct cfg80211_beacon_data *bcn)
5421 {
5422         bool haveinfo = false;
5423         int err;
5424
5425         memset(bcn, 0, sizeof(*bcn));
5426
5427         bcn->link_id = nl80211_link_id(attrs);
5428
5429         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5430                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5431                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5432                 if (!bcn->head_len)
5433                         return -EINVAL;
5434                 haveinfo = true;
5435         }
5436
5437         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5438                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5439                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5440                 haveinfo = true;
5441         }
5442
5443         if (!haveinfo)
5444                 return -EINVAL;
5445
5446         if (attrs[NL80211_ATTR_IE]) {
5447                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5448                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5449         }
5450
5451         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5452                 bcn->proberesp_ies =
5453                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5454                 bcn->proberesp_ies_len =
5455                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5456         }
5457
5458         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5459                 bcn->assocresp_ies =
5460                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5461                 bcn->assocresp_ies_len =
5462                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5463         }
5464
5465         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5466                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5467                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5468         }
5469
5470         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5471                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5472
5473                 err = nla_parse_nested_deprecated(tb,
5474                                                   NL80211_FTM_RESP_ATTR_MAX,
5475                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5476                                                   NULL, NULL);
5477                 if (err)
5478                         return err;
5479
5480                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5481                     wiphy_ext_feature_isset(&rdev->wiphy,
5482                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5483                         bcn->ftm_responder = 1;
5484                 else
5485                         return -EOPNOTSUPP;
5486
5487                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5488                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5489                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5490                 }
5491
5492                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5493                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5494                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5495                 }
5496         } else {
5497                 bcn->ftm_responder = -1;
5498         }
5499
5500         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5501                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5502                                                  &bcn->he_bss_color);
5503                 if (err)
5504                         return err;
5505                 bcn->he_bss_color_valid = true;
5506         }
5507
5508         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5509                 struct cfg80211_mbssid_elems *mbssid =
5510                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5511                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5512
5513                 if (IS_ERR(mbssid))
5514                         return PTR_ERR(mbssid);
5515
5516                 bcn->mbssid_ies = mbssid;
5517         }
5518
5519         return 0;
5520 }
5521
5522 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5523                                     struct ieee80211_he_obss_pd *he_obss_pd)
5524 {
5525         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5526         int err;
5527
5528         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5529                                he_obss_pd_policy, NULL);
5530         if (err)
5531                 return err;
5532
5533         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5534                 return -EINVAL;
5535
5536         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5537
5538         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5539                 he_obss_pd->min_offset =
5540                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5541         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5542                 he_obss_pd->max_offset =
5543                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5544         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5545                 he_obss_pd->non_srg_max_offset =
5546                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5547
5548         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5549                 return -EINVAL;
5550
5551         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5552                 memcpy(he_obss_pd->bss_color_bitmap,
5553                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5554                        sizeof(he_obss_pd->bss_color_bitmap));
5555
5556         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5557                 memcpy(he_obss_pd->partial_bssid_bitmap,
5558                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5559                        sizeof(he_obss_pd->partial_bssid_bitmap));
5560
5561         he_obss_pd->enable = true;
5562
5563         return 0;
5564 }
5565
5566 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5567                                         struct nlattr *attrs,
5568                                         struct cfg80211_ap_settings *params)
5569 {
5570         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5571         int ret;
5572         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5573
5574         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5575                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5576                 return -EINVAL;
5577
5578         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5579                                NULL, NULL);
5580         if (ret)
5581                 return ret;
5582
5583         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5584             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5585             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5586                 return -EINVAL;
5587
5588         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5589         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5590         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5591         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5592
5593         return 0;
5594 }
5595
5596 static int
5597 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5598                                      struct nlattr *attrs,
5599                                      struct cfg80211_ap_settings *params)
5600 {
5601         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5602         int ret;
5603         struct cfg80211_unsol_bcast_probe_resp *presp =
5604                                         &params->unsol_bcast_probe_resp;
5605
5606         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5607                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5608                 return -EINVAL;
5609
5610         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5611                                attrs, NULL, NULL);
5612         if (ret)
5613                 return ret;
5614
5615         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5616             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5617                 return -EINVAL;
5618
5619         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5620         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5621         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5622         return 0;
5623 }
5624
5625 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5626                                             const struct element *rates)
5627 {
5628         int i;
5629
5630         if (!rates)
5631                 return;
5632
5633         for (i = 0; i < rates->datalen; i++) {
5634                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5635                         params->ht_required = true;
5636                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5637                         params->vht_required = true;
5638                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5639                         params->he_required = true;
5640                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5641                         params->sae_h2e_required = true;
5642         }
5643 }
5644
5645 /*
5646  * Since the nl80211 API didn't include, from the beginning, attributes about
5647  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5648  * benefit of drivers that rebuild IEs in the firmware.
5649  */
5650 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5651 {
5652         const struct cfg80211_beacon_data *bcn = &params->beacon;
5653         size_t ies_len = bcn->tail_len;
5654         const u8 *ies = bcn->tail;
5655         const struct element *rates;
5656         const struct element *cap;
5657
5658         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5659         nl80211_check_ap_rate_selectors(params, rates);
5660
5661         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5662         nl80211_check_ap_rate_selectors(params, rates);
5663
5664         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5665         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5666                 params->ht_cap = (void *)cap->data;
5667         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5668         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5669                 params->vht_cap = (void *)cap->data;
5670         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5671         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5672                 params->he_cap = (void *)(cap->data + 1);
5673         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5674         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5675                 params->he_oper = (void *)(cap->data + 1);
5676         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5677         if (cap) {
5678                 if (!cap->datalen)
5679                         return -EINVAL;
5680                 params->eht_cap = (void *)(cap->data + 1);
5681                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5682                                                 (const u8 *)params->eht_cap,
5683                                                 cap->datalen - 1, true))
5684                         return -EINVAL;
5685         }
5686         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5687         if (cap) {
5688                 if (!cap->datalen)
5689                         return -EINVAL;
5690                 params->eht_oper = (void *)(cap->data + 1);
5691                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5692                                                 cap->datalen - 1))
5693                         return -EINVAL;
5694         }
5695         return 0;
5696 }
5697
5698 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5699                                    struct cfg80211_ap_settings *params)
5700 {
5701         struct wireless_dev *wdev;
5702
5703         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5704                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5705                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5706                         continue;
5707
5708                 if (!wdev->u.ap.preset_chandef.chan)
5709                         continue;
5710
5711                 params->chandef = wdev->u.ap.preset_chandef;
5712                 return true;
5713         }
5714
5715         return false;
5716 }
5717
5718 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5719                                     enum nl80211_auth_type auth_type,
5720                                     enum nl80211_commands cmd)
5721 {
5722         if (auth_type > NL80211_AUTHTYPE_MAX)
5723                 return false;
5724
5725         switch (cmd) {
5726         case NL80211_CMD_AUTHENTICATE:
5727                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5728                     auth_type == NL80211_AUTHTYPE_SAE)
5729                         return false;
5730                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5731                                              NL80211_EXT_FEATURE_FILS_STA) &&
5732                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5733                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5734                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5735                         return false;
5736                 return true;
5737         case NL80211_CMD_CONNECT:
5738                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5739                     !wiphy_ext_feature_isset(&rdev->wiphy,
5740                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5741                     auth_type == NL80211_AUTHTYPE_SAE)
5742                         return false;
5743
5744                 /* FILS with SK PFS or PK not supported yet */
5745                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5746                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5747                         return false;
5748                 if (!wiphy_ext_feature_isset(
5749                             &rdev->wiphy,
5750                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5751                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5752                         return false;
5753                 return true;
5754         case NL80211_CMD_START_AP:
5755                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5756                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5757                     auth_type == NL80211_AUTHTYPE_SAE)
5758                         return false;
5759                 /* FILS not supported yet */
5760                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5761                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5762                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5763                         return false;
5764                 return true;
5765         default:
5766                 return false;
5767         }
5768 }
5769
5770 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5771 {
5772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5773         unsigned int link_id = nl80211_link_id(info->attrs);
5774         struct net_device *dev = info->user_ptr[1];
5775         struct wireless_dev *wdev = dev->ieee80211_ptr;
5776         struct cfg80211_ap_settings *params;
5777         int err;
5778
5779         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5780             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5781                 return -EOPNOTSUPP;
5782
5783         if (!rdev->ops->start_ap)
5784                 return -EOPNOTSUPP;
5785
5786         if (wdev->links[link_id].ap.beacon_interval)
5787                 return -EALREADY;
5788
5789         /* these are required for START_AP */
5790         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5791             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5792             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5793                 return -EINVAL;
5794
5795         params = kzalloc(sizeof(*params), GFP_KERNEL);
5796         if (!params)
5797                 return -ENOMEM;
5798
5799         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon);
5800         if (err)
5801                 goto out;
5802
5803         params->beacon_interval =
5804                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5805         params->dtim_period =
5806                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5807
5808         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5809                                            params->beacon_interval);
5810         if (err)
5811                 goto out;
5812
5813         /*
5814          * In theory, some of these attributes should be required here
5815          * but since they were not used when the command was originally
5816          * added, keep them optional for old user space programs to let
5817          * them continue to work with drivers that do not need the
5818          * additional information -- drivers must check!
5819          */
5820         if (info->attrs[NL80211_ATTR_SSID]) {
5821                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5822                 params->ssid_len =
5823                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5824                 if (params->ssid_len == 0) {
5825                         err = -EINVAL;
5826                         goto out;
5827                 }
5828
5829                 if (wdev->u.ap.ssid_len &&
5830                     (wdev->u.ap.ssid_len != params->ssid_len ||
5831                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5832                         /* require identical SSID for MLO */
5833                         err = -EINVAL;
5834                         goto out;
5835                 }
5836         } else if (wdev->valid_links) {
5837                 /* require SSID for MLO */
5838                 err = -EINVAL;
5839                 goto out;
5840         }
5841
5842         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5843                 params->hidden_ssid = nla_get_u32(
5844                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5845
5846         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5847
5848         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5849                 params->auth_type = nla_get_u32(
5850                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5851                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5852                                              NL80211_CMD_START_AP)) {
5853                         err = -EINVAL;
5854                         goto out;
5855                 }
5856         } else
5857                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5858
5859         err = nl80211_crypto_settings(rdev, info, &params->crypto,
5860                                       NL80211_MAX_NR_CIPHER_SUITES);
5861         if (err)
5862                 goto out;
5863
5864         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5865                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
5866                         err = -EOPNOTSUPP;
5867                         goto out;
5868                 }
5869                 params->inactivity_timeout = nla_get_u16(
5870                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5871         }
5872
5873         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5874                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5875                         err = -EINVAL;
5876                         goto out;
5877                 }
5878                 params->p2p_ctwindow =
5879                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5880                 if (params->p2p_ctwindow != 0 &&
5881                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
5882                         err = -EINVAL;
5883                         goto out;
5884                 }
5885         }
5886
5887         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5888                 u8 tmp;
5889
5890                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5891                         err = -EINVAL;
5892                         goto out;
5893                 }
5894                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5895                 params->p2p_opp_ps = tmp;
5896                 if (params->p2p_opp_ps != 0 &&
5897                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
5898                         err = -EINVAL;
5899                         goto out;
5900                 }
5901         }
5902
5903         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5904                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
5905                 if (err)
5906                         goto out;
5907         } else if (wdev->valid_links) {
5908                 /* with MLD need to specify the channel configuration */
5909                 err = -EINVAL;
5910                 goto out;
5911         } else if (wdev->u.ap.preset_chandef.chan) {
5912                 params->chandef = wdev->u.ap.preset_chandef;
5913         } else if (!nl80211_get_ap_channel(rdev, params)) {
5914                 err = -EINVAL;
5915                 goto out;
5916         }
5917
5918         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
5919                                            wdev->iftype)) {
5920                 err = -EINVAL;
5921                 goto out;
5922         }
5923
5924         wdev_lock(wdev);
5925
5926         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5927                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5928                                                     NL80211_ATTR_TX_RATES,
5929                                                     &params->beacon_rate,
5930                                                     dev, false, link_id);
5931                 if (err)
5932                         goto out_unlock;
5933
5934                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
5935                                               &params->beacon_rate);
5936                 if (err)
5937                         goto out_unlock;
5938         }
5939
5940         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5941                 params->smps_mode =
5942                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5943                 switch (params->smps_mode) {
5944                 case NL80211_SMPS_OFF:
5945                         break;
5946                 case NL80211_SMPS_STATIC:
5947                         if (!(rdev->wiphy.features &
5948                               NL80211_FEATURE_STATIC_SMPS)) {
5949                                 err = -EINVAL;
5950                                 goto out_unlock;
5951                         }
5952                         break;
5953                 case NL80211_SMPS_DYNAMIC:
5954                         if (!(rdev->wiphy.features &
5955                               NL80211_FEATURE_DYNAMIC_SMPS)) {
5956                                 err = -EINVAL;
5957                                 goto out_unlock;
5958                         }
5959                         break;
5960                 default:
5961                         err = -EINVAL;
5962                         goto out_unlock;
5963                 }
5964         } else {
5965                 params->smps_mode = NL80211_SMPS_OFF;
5966         }
5967
5968         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5969         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
5970                 err = -EOPNOTSUPP;
5971                 goto out_unlock;
5972         }
5973
5974         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5975                 params->acl = parse_acl_data(&rdev->wiphy, info);
5976                 if (IS_ERR(params->acl)) {
5977                         err = PTR_ERR(params->acl);
5978                         params->acl = NULL;
5979                         goto out_unlock;
5980                 }
5981         }
5982
5983         params->twt_responder =
5984                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5985
5986         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5987                 err = nl80211_parse_he_obss_pd(
5988                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5989                                         &params->he_obss_pd);
5990                 if (err)
5991                         goto out_unlock;
5992         }
5993
5994         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5995                 err = nl80211_parse_fils_discovery(rdev,
5996                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5997                                                    params);
5998                 if (err)
5999                         goto out_unlock;
6000         }
6001
6002         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6003                 err = nl80211_parse_unsol_bcast_probe_resp(
6004                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6005                         params);
6006                 if (err)
6007                         goto out_unlock;
6008         }
6009
6010         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6011                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6012                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6013                                                   &params->mbssid_config,
6014                                                   params->beacon.mbssid_ies ?
6015                                                         params->beacon.mbssid_ies->cnt :
6016                                                         0);
6017                 if (err)
6018                         goto out_unlock;
6019         }
6020
6021         err = nl80211_calculate_ap_params(params);
6022         if (err)
6023                 goto out_unlock;
6024
6025         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6026                 params->flags = nla_get_u32(
6027                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6028         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6029                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6030
6031         if (wdev->conn_owner_nlportid &&
6032             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6033             wdev->conn_owner_nlportid != info->snd_portid) {
6034                 err = -EINVAL;
6035                 goto out_unlock;
6036         }
6037
6038         /* FIXME: validate MLO/link-id against driver capabilities */
6039
6040         err = rdev_start_ap(rdev, dev, params);
6041         if (!err) {
6042                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6043                 wdev->links[link_id].ap.chandef = params->chandef;
6044                 wdev->u.ap.ssid_len = params->ssid_len;
6045                 memcpy(wdev->u.ap.ssid, params->ssid,
6046                        params->ssid_len);
6047
6048                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6049                         wdev->conn_owner_nlportid = info->snd_portid;
6050         }
6051 out_unlock:
6052         wdev_unlock(wdev);
6053 out:
6054         kfree(params->acl);
6055         kfree(params->beacon.mbssid_ies);
6056         if (params->mbssid_config.tx_wdev &&
6057             params->mbssid_config.tx_wdev->netdev &&
6058             params->mbssid_config.tx_wdev->netdev != dev)
6059                 dev_put(params->mbssid_config.tx_wdev->netdev);
6060         kfree(params);
6061
6062         return err;
6063 }
6064
6065 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6066 {
6067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6068         unsigned int link_id = nl80211_link_id(info->attrs);
6069         struct net_device *dev = info->user_ptr[1];
6070         struct wireless_dev *wdev = dev->ieee80211_ptr;
6071         struct cfg80211_beacon_data params;
6072         int err;
6073
6074         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6075             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6076                 return -EOPNOTSUPP;
6077
6078         if (!rdev->ops->change_beacon)
6079                 return -EOPNOTSUPP;
6080
6081         if (!wdev->links[link_id].ap.beacon_interval)
6082                 return -EINVAL;
6083
6084         err = nl80211_parse_beacon(rdev, info->attrs, &params);
6085         if (err)
6086                 goto out;
6087
6088         wdev_lock(wdev);
6089         err = rdev_change_beacon(rdev, dev, &params);
6090         wdev_unlock(wdev);
6091
6092 out:
6093         kfree(params.mbssid_ies);
6094         return err;
6095 }
6096
6097 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6098 {
6099         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6100         unsigned int link_id = nl80211_link_id(info->attrs);
6101         struct net_device *dev = info->user_ptr[1];
6102
6103         return cfg80211_stop_ap(rdev, dev, link_id, false);
6104 }
6105
6106 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6107         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6108         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6109         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6110         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6111         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6112         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6113 };
6114
6115 static int parse_station_flags(struct genl_info *info,
6116                                enum nl80211_iftype iftype,
6117                                struct station_parameters *params)
6118 {
6119         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6120         struct nlattr *nla;
6121         int flag;
6122
6123         /*
6124          * Try parsing the new attribute first so userspace
6125          * can specify both for older kernels.
6126          */
6127         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6128         if (nla) {
6129                 struct nl80211_sta_flag_update *sta_flags;
6130
6131                 sta_flags = nla_data(nla);
6132                 params->sta_flags_mask = sta_flags->mask;
6133                 params->sta_flags_set = sta_flags->set;
6134                 params->sta_flags_set &= params->sta_flags_mask;
6135                 if ((params->sta_flags_mask |
6136                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6137                         return -EINVAL;
6138                 return 0;
6139         }
6140
6141         /* if present, parse the old attribute */
6142
6143         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6144         if (!nla)
6145                 return 0;
6146
6147         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6148                 return -EINVAL;
6149
6150         /*
6151          * Only allow certain flags for interface types so that
6152          * other attributes are silently ignored. Remember that
6153          * this is backward compatibility code with old userspace
6154          * and shouldn't be hit in other cases anyway.
6155          */
6156         switch (iftype) {
6157         case NL80211_IFTYPE_AP:
6158         case NL80211_IFTYPE_AP_VLAN:
6159         case NL80211_IFTYPE_P2P_GO:
6160                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6161                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6162                                          BIT(NL80211_STA_FLAG_WME) |
6163                                          BIT(NL80211_STA_FLAG_MFP);
6164                 break;
6165         case NL80211_IFTYPE_P2P_CLIENT:
6166         case NL80211_IFTYPE_STATION:
6167                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6168                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6169                 break;
6170         case NL80211_IFTYPE_MESH_POINT:
6171                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6172                                          BIT(NL80211_STA_FLAG_MFP) |
6173                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6174                 break;
6175         default:
6176                 return -EINVAL;
6177         }
6178
6179         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6180                 if (flags[flag]) {
6181                         params->sta_flags_set |= (1<<flag);
6182
6183                         /* no longer support new API additions in old API */
6184                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6185                                 return -EINVAL;
6186                 }
6187         }
6188
6189         return 0;
6190 }
6191
6192 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6193 {
6194         struct nlattr *rate;
6195         u32 bitrate;
6196         u16 bitrate_compat;
6197         enum nl80211_rate_info rate_flg;
6198
6199         rate = nla_nest_start_noflag(msg, attr);
6200         if (!rate)
6201                 return false;
6202
6203         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6204         bitrate = cfg80211_calculate_bitrate(info);
6205         /* report 16-bit bitrate only if we can */
6206         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6207         if (bitrate > 0 &&
6208             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6209                 return false;
6210         if (bitrate_compat > 0 &&
6211             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6212                 return false;
6213
6214         switch (info->bw) {
6215         case RATE_INFO_BW_5:
6216                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6217                 break;
6218         case RATE_INFO_BW_10:
6219                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6220                 break;
6221         default:
6222                 WARN_ON(1);
6223                 fallthrough;
6224         case RATE_INFO_BW_20:
6225                 rate_flg = 0;
6226                 break;
6227         case RATE_INFO_BW_40:
6228                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6229                 break;
6230         case RATE_INFO_BW_80:
6231                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6232                 break;
6233         case RATE_INFO_BW_160:
6234                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6235                 break;
6236         case RATE_INFO_BW_HE_RU:
6237                 rate_flg = 0;
6238                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6239                 break;
6240         case RATE_INFO_BW_320:
6241                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6242                 break;
6243         case RATE_INFO_BW_EHT_RU:
6244                 rate_flg = 0;
6245                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6246                 break;
6247         }
6248
6249         if (rate_flg && nla_put_flag(msg, rate_flg))
6250                 return false;
6251
6252         if (info->flags & RATE_INFO_FLAGS_MCS) {
6253                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6254                         return false;
6255                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6256                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6257                         return false;
6258         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6259                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6260                         return false;
6261                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6262                         return false;
6263                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6264                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6265                         return false;
6266         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6267                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6268                         return false;
6269                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6270                         return false;
6271                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6272                         return false;
6273                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6274                         return false;
6275                 if (info->bw == RATE_INFO_BW_HE_RU &&
6276                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6277                                info->he_ru_alloc))
6278                         return false;
6279         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6280                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6281                         return false;
6282                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6283                         return false;
6284                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6285                         return false;
6286                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6287                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6288                                info->eht_ru_alloc))
6289                         return false;
6290         }
6291
6292         nla_nest_end(msg, rate);
6293         return true;
6294 }
6295
6296 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6297                                int id)
6298 {
6299         void *attr;
6300         int i = 0;
6301
6302         if (!mask)
6303                 return true;
6304
6305         attr = nla_nest_start_noflag(msg, id);
6306         if (!attr)
6307                 return false;
6308
6309         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6310                 if (!(mask & BIT(i)))
6311                         continue;
6312
6313                 if (nla_put_u8(msg, i, signal[i]))
6314                         return false;
6315         }
6316
6317         nla_nest_end(msg, attr);
6318
6319         return true;
6320 }
6321
6322 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6323                                 u32 seq, int flags,
6324                                 struct cfg80211_registered_device *rdev,
6325                                 struct net_device *dev,
6326                                 const u8 *mac_addr, struct station_info *sinfo)
6327 {
6328         void *hdr;
6329         struct nlattr *sinfoattr, *bss_param;
6330
6331         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6332         if (!hdr) {
6333                 cfg80211_sinfo_release_content(sinfo);
6334                 return -1;
6335         }
6336
6337         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6338             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6339             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6340                 goto nla_put_failure;
6341
6342         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6343         if (!sinfoattr)
6344                 goto nla_put_failure;
6345
6346 #define PUT_SINFO(attr, memb, type) do {                                \
6347         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6348         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6349             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6350                              sinfo->memb))                              \
6351                 goto nla_put_failure;                                   \
6352         } while (0)
6353 #define PUT_SINFO_U64(attr, memb) do {                                  \
6354         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6355             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6356                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6357                 goto nla_put_failure;                                   \
6358         } while (0)
6359
6360         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6361         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6362         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6363
6364         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6365                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6366             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6367                         (u32)sinfo->rx_bytes))
6368                 goto nla_put_failure;
6369
6370         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6371                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6372             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6373                         (u32)sinfo->tx_bytes))
6374                 goto nla_put_failure;
6375
6376         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6377         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6378         PUT_SINFO(LLID, llid, u16);
6379         PUT_SINFO(PLID, plid, u16);
6380         PUT_SINFO(PLINK_STATE, plink_state, u8);
6381         PUT_SINFO_U64(RX_DURATION, rx_duration);
6382         PUT_SINFO_U64(TX_DURATION, tx_duration);
6383
6384         if (wiphy_ext_feature_isset(&rdev->wiphy,
6385                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6386                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6387
6388         switch (rdev->wiphy.signal_type) {
6389         case CFG80211_SIGNAL_TYPE_MBM:
6390                 PUT_SINFO(SIGNAL, signal, u8);
6391                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6392                 break;
6393         default:
6394                 break;
6395         }
6396         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6397                 if (!nl80211_put_signal(msg, sinfo->chains,
6398                                         sinfo->chain_signal,
6399                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6400                         goto nla_put_failure;
6401         }
6402         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6403                 if (!nl80211_put_signal(msg, sinfo->chains,
6404                                         sinfo->chain_signal_avg,
6405                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6406                         goto nla_put_failure;
6407         }
6408         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6409                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6410                                           NL80211_STA_INFO_TX_BITRATE))
6411                         goto nla_put_failure;
6412         }
6413         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6414                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6415                                           NL80211_STA_INFO_RX_BITRATE))
6416                         goto nla_put_failure;
6417         }
6418
6419         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6420         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6421         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6422         PUT_SINFO(TX_FAILED, tx_failed, u32);
6423         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6424         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6425         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6426         PUT_SINFO(LOCAL_PM, local_pm, u32);
6427         PUT_SINFO(PEER_PM, peer_pm, u32);
6428         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6429         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6430         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6431
6432         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6433                 bss_param = nla_nest_start_noflag(msg,
6434                                                   NL80211_STA_INFO_BSS_PARAM);
6435                 if (!bss_param)
6436                         goto nla_put_failure;
6437
6438                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6439                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6440                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6441                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6442                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6443                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6444                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6445                                sinfo->bss_param.dtim_period) ||
6446                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6447                                 sinfo->bss_param.beacon_interval))
6448                         goto nla_put_failure;
6449
6450                 nla_nest_end(msg, bss_param);
6451         }
6452         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6453             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6454                     sizeof(struct nl80211_sta_flag_update),
6455                     &sinfo->sta_flags))
6456                 goto nla_put_failure;
6457
6458         PUT_SINFO_U64(T_OFFSET, t_offset);
6459         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6460         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6461         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6462         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6463         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6464         if (wiphy_ext_feature_isset(&rdev->wiphy,
6465                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6466                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6467                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6468         }
6469
6470 #undef PUT_SINFO
6471 #undef PUT_SINFO_U64
6472
6473         if (sinfo->pertid) {
6474                 struct nlattr *tidsattr;
6475                 int tid;
6476
6477                 tidsattr = nla_nest_start_noflag(msg,
6478                                                  NL80211_STA_INFO_TID_STATS);
6479                 if (!tidsattr)
6480                         goto nla_put_failure;
6481
6482                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6483                         struct cfg80211_tid_stats *tidstats;
6484                         struct nlattr *tidattr;
6485
6486                         tidstats = &sinfo->pertid[tid];
6487
6488                         if (!tidstats->filled)
6489                                 continue;
6490
6491                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6492                         if (!tidattr)
6493                                 goto nla_put_failure;
6494
6495 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6496         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6497             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6498                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6499                 goto nla_put_failure;                                   \
6500         } while (0)
6501
6502                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6503                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6504                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6505                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6506
6507 #undef PUT_TIDVAL_U64
6508                         if ((tidstats->filled &
6509                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6510                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6511                                                    NL80211_TID_STATS_TXQ_STATS))
6512                                 goto nla_put_failure;
6513
6514                         nla_nest_end(msg, tidattr);
6515                 }
6516
6517                 nla_nest_end(msg, tidsattr);
6518         }
6519
6520         nla_nest_end(msg, sinfoattr);
6521
6522         if (sinfo->assoc_req_ies_len &&
6523             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6524                     sinfo->assoc_req_ies))
6525                 goto nla_put_failure;
6526
6527         cfg80211_sinfo_release_content(sinfo);
6528         genlmsg_end(msg, hdr);
6529         return 0;
6530
6531  nla_put_failure:
6532         cfg80211_sinfo_release_content(sinfo);
6533         genlmsg_cancel(msg, hdr);
6534         return -EMSGSIZE;
6535 }
6536
6537 static int nl80211_dump_station(struct sk_buff *skb,
6538                                 struct netlink_callback *cb)
6539 {
6540         struct station_info sinfo;
6541         struct cfg80211_registered_device *rdev;
6542         struct wireless_dev *wdev;
6543         u8 mac_addr[ETH_ALEN];
6544         int sta_idx = cb->args[2];
6545         int err;
6546
6547         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6548         if (err)
6549                 return err;
6550         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6551         __acquire(&rdev->wiphy.mtx);
6552
6553         if (!wdev->netdev) {
6554                 err = -EINVAL;
6555                 goto out_err;
6556         }
6557
6558         if (!rdev->ops->dump_station) {
6559                 err = -EOPNOTSUPP;
6560                 goto out_err;
6561         }
6562
6563         while (1) {
6564                 memset(&sinfo, 0, sizeof(sinfo));
6565                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6566                                         mac_addr, &sinfo);
6567                 if (err == -ENOENT)
6568                         break;
6569                 if (err)
6570                         goto out_err;
6571
6572                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6573                                 NETLINK_CB(cb->skb).portid,
6574                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6575                                 rdev, wdev->netdev, mac_addr,
6576                                 &sinfo) < 0)
6577                         goto out;
6578
6579                 sta_idx++;
6580         }
6581
6582  out:
6583         cb->args[2] = sta_idx;
6584         err = skb->len;
6585  out_err:
6586         wiphy_unlock(&rdev->wiphy);
6587
6588         return err;
6589 }
6590
6591 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6592 {
6593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6594         struct net_device *dev = info->user_ptr[1];
6595         struct station_info sinfo;
6596         struct sk_buff *msg;
6597         u8 *mac_addr = NULL;
6598         int err;
6599
6600         memset(&sinfo, 0, sizeof(sinfo));
6601
6602         if (!info->attrs[NL80211_ATTR_MAC])
6603                 return -EINVAL;
6604
6605         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6606
6607         if (!rdev->ops->get_station)
6608                 return -EOPNOTSUPP;
6609
6610         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6611         if (err)
6612                 return err;
6613
6614         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6615         if (!msg) {
6616                 cfg80211_sinfo_release_content(&sinfo);
6617                 return -ENOMEM;
6618         }
6619
6620         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6621                                  info->snd_portid, info->snd_seq, 0,
6622                                  rdev, dev, mac_addr, &sinfo) < 0) {
6623                 nlmsg_free(msg);
6624                 return -ENOBUFS;
6625         }
6626
6627         return genlmsg_reply(msg, info);
6628 }
6629
6630 int cfg80211_check_station_change(struct wiphy *wiphy,
6631                                   struct station_parameters *params,
6632                                   enum cfg80211_station_type statype)
6633 {
6634         if (params->listen_interval != -1 &&
6635             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6636                 return -EINVAL;
6637
6638         if (params->support_p2p_ps != -1 &&
6639             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6640                 return -EINVAL;
6641
6642         if (params->aid &&
6643             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6644             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6645                 return -EINVAL;
6646
6647         /* When you run into this, adjust the code below for the new flag */
6648         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6649
6650         switch (statype) {
6651         case CFG80211_STA_MESH_PEER_KERNEL:
6652         case CFG80211_STA_MESH_PEER_USER:
6653                 /*
6654                  * No ignoring the TDLS flag here -- the userspace mesh
6655                  * code doesn't have the bug of including TDLS in the
6656                  * mask everywhere.
6657                  */
6658                 if (params->sta_flags_mask &
6659                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6660                                   BIT(NL80211_STA_FLAG_MFP) |
6661                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6662                         return -EINVAL;
6663                 break;
6664         case CFG80211_STA_TDLS_PEER_SETUP:
6665         case CFG80211_STA_TDLS_PEER_ACTIVE:
6666                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6667                         return -EINVAL;
6668                 /* ignore since it can't change */
6669                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6670                 break;
6671         default:
6672                 /* disallow mesh-specific things */
6673                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6674                         return -EINVAL;
6675                 if (params->local_pm)
6676                         return -EINVAL;
6677                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6678                         return -EINVAL;
6679         }
6680
6681         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6682             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6683                 /* TDLS can't be set, ... */
6684                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6685                         return -EINVAL;
6686                 /*
6687                  * ... but don't bother the driver with it. This works around
6688                  * a hostapd/wpa_supplicant issue -- it always includes the
6689                  * TLDS_PEER flag in the mask even for AP mode.
6690                  */
6691                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6692         }
6693
6694         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6695             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6696                 /* reject other things that can't change */
6697                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6698                         return -EINVAL;
6699                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6700                         return -EINVAL;
6701                 if (params->link_sta_params.supported_rates)
6702                         return -EINVAL;
6703                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6704                     params->link_sta_params.vht_capa ||
6705                     params->link_sta_params.he_capa ||
6706                     params->link_sta_params.eht_capa)
6707                         return -EINVAL;
6708         }
6709
6710         if (statype != CFG80211_STA_AP_CLIENT &&
6711             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6712                 if (params->vlan)
6713                         return -EINVAL;
6714         }
6715
6716         switch (statype) {
6717         case CFG80211_STA_AP_MLME_CLIENT:
6718                 /* Use this only for authorizing/unauthorizing a station */
6719                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6720                         return -EOPNOTSUPP;
6721                 break;
6722         case CFG80211_STA_AP_CLIENT:
6723         case CFG80211_STA_AP_CLIENT_UNASSOC:
6724                 /* accept only the listed bits */
6725                 if (params->sta_flags_mask &
6726                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6727                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6728                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6729                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6730                                   BIT(NL80211_STA_FLAG_WME) |
6731                                   BIT(NL80211_STA_FLAG_MFP)))
6732                         return -EINVAL;
6733
6734                 /* but authenticated/associated only if driver handles it */
6735                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6736                     params->sta_flags_mask &
6737                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6738                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6739                         return -EINVAL;
6740                 break;
6741         case CFG80211_STA_IBSS:
6742         case CFG80211_STA_AP_STA:
6743                 /* reject any changes other than AUTHORIZED */
6744                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6745                         return -EINVAL;
6746                 break;
6747         case CFG80211_STA_TDLS_PEER_SETUP:
6748                 /* reject any changes other than AUTHORIZED or WME */
6749                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6750                                                BIT(NL80211_STA_FLAG_WME)))
6751                         return -EINVAL;
6752                 /* force (at least) rates when authorizing */
6753                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6754                     !params->link_sta_params.supported_rates)
6755                         return -EINVAL;
6756                 break;
6757         case CFG80211_STA_TDLS_PEER_ACTIVE:
6758                 /* reject any changes */
6759                 return -EINVAL;
6760         case CFG80211_STA_MESH_PEER_KERNEL:
6761                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6762                         return -EINVAL;
6763                 break;
6764         case CFG80211_STA_MESH_PEER_USER:
6765                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6766                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6767                         return -EINVAL;
6768                 break;
6769         }
6770
6771         /*
6772          * Older kernel versions ignored this attribute entirely, so don't
6773          * reject attempts to update it but mark it as unused instead so the
6774          * driver won't look at the data.
6775          */
6776         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6777             statype != CFG80211_STA_TDLS_PEER_SETUP)
6778                 params->link_sta_params.opmode_notif_used = false;
6779
6780         return 0;
6781 }
6782 EXPORT_SYMBOL(cfg80211_check_station_change);
6783
6784 /*
6785  * Get vlan interface making sure it is running and on the right wiphy.
6786  */
6787 static struct net_device *get_vlan(struct genl_info *info,
6788                                    struct cfg80211_registered_device *rdev)
6789 {
6790         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6791         struct net_device *v;
6792         int ret;
6793
6794         if (!vlanattr)
6795                 return NULL;
6796
6797         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6798         if (!v)
6799                 return ERR_PTR(-ENODEV);
6800
6801         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6802                 ret = -EINVAL;
6803                 goto error;
6804         }
6805
6806         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6807             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6808             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6809                 ret = -EINVAL;
6810                 goto error;
6811         }
6812
6813         if (!netif_running(v)) {
6814                 ret = -ENETDOWN;
6815                 goto error;
6816         }
6817
6818         return v;
6819  error:
6820         dev_put(v);
6821         return ERR_PTR(ret);
6822 }
6823
6824 static int nl80211_parse_sta_wme(struct genl_info *info,
6825                                  struct station_parameters *params)
6826 {
6827         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6828         struct nlattr *nla;
6829         int err;
6830
6831         /* parse WME attributes if present */
6832         if (!info->attrs[NL80211_ATTR_STA_WME])
6833                 return 0;
6834
6835         nla = info->attrs[NL80211_ATTR_STA_WME];
6836         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6837                                           nl80211_sta_wme_policy,
6838                                           info->extack);
6839         if (err)
6840                 return err;
6841
6842         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6843                 params->uapsd_queues = nla_get_u8(
6844                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6845         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6846                 return -EINVAL;
6847
6848         if (tb[NL80211_STA_WME_MAX_SP])
6849                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6850
6851         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6852                 return -EINVAL;
6853
6854         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6855
6856         return 0;
6857 }
6858
6859 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6860                                       struct station_parameters *params)
6861 {
6862         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6863                 params->supported_channels =
6864                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6865                 params->supported_channels_len =
6866                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6867                 /*
6868                  * Need to include at least one (first channel, number of
6869                  * channels) tuple for each subband (checked in policy),
6870                  * and must have proper tuples for the rest of the data as well.
6871                  */
6872                 if (params->supported_channels_len % 2)
6873                         return -EINVAL;
6874         }
6875
6876         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6877                 params->supported_oper_classes =
6878                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6879                 params->supported_oper_classes_len =
6880                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6881         }
6882         return 0;
6883 }
6884
6885 static int nl80211_set_station_tdls(struct genl_info *info,
6886                                     struct station_parameters *params)
6887 {
6888         int err;
6889         /* Dummy STA entry gets updated once the peer capabilities are known */
6890         if (info->attrs[NL80211_ATTR_PEER_AID])
6891                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6892         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6893                 params->link_sta_params.ht_capa =
6894                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6895         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6896                 params->link_sta_params.vht_capa =
6897                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6898         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6899                 params->link_sta_params.he_capa =
6900                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6901                 params->link_sta_params.he_capa_len =
6902                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6903
6904                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
6905                         params->link_sta_params.eht_capa =
6906                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6907                         params->link_sta_params.eht_capa_len =
6908                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6909
6910                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
6911                                                         (const u8 *)params->link_sta_params.eht_capa,
6912                                                         params->link_sta_params.eht_capa_len,
6913                                                         false))
6914                                 return -EINVAL;
6915                 }
6916         }
6917
6918         err = nl80211_parse_sta_channel_info(info, params);
6919         if (err)
6920                 return err;
6921
6922         return nl80211_parse_sta_wme(info, params);
6923 }
6924
6925 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6926                                              struct sta_txpwr *txpwr,
6927                                              bool *txpwr_set)
6928 {
6929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6930         int idx;
6931
6932         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6933                 if (!rdev->ops->set_tx_power ||
6934                     !wiphy_ext_feature_isset(&rdev->wiphy,
6935                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6936                         return -EOPNOTSUPP;
6937
6938                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6939                 txpwr->type = nla_get_u8(info->attrs[idx]);
6940
6941                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
6942                         idx = NL80211_ATTR_STA_TX_POWER;
6943
6944                         if (info->attrs[idx])
6945                                 txpwr->power = nla_get_s16(info->attrs[idx]);
6946                         else
6947                                 return -EINVAL;
6948                 }
6949
6950                 *txpwr_set = true;
6951         } else {
6952                 *txpwr_set = false;
6953         }
6954
6955         return 0;
6956 }
6957
6958 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6959 {
6960         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6961         struct net_device *dev = info->user_ptr[1];
6962         struct station_parameters params;
6963         u8 *mac_addr;
6964         int err;
6965
6966         memset(&params, 0, sizeof(params));
6967
6968         if (!rdev->ops->change_station)
6969                 return -EOPNOTSUPP;
6970
6971         /*
6972          * AID and listen_interval properties can be set only for unassociated
6973          * station. Include these parameters here and will check them in
6974          * cfg80211_check_station_change().
6975          */
6976         if (info->attrs[NL80211_ATTR_STA_AID])
6977                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6978
6979         if (info->attrs[NL80211_ATTR_VLAN_ID])
6980                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6981
6982         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6983                 params.listen_interval =
6984                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6985         else
6986                 params.listen_interval = -1;
6987
6988         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6989                 params.support_p2p_ps =
6990                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6991         else
6992                 params.support_p2p_ps = -1;
6993
6994         if (!info->attrs[NL80211_ATTR_MAC])
6995                 return -EINVAL;
6996
6997         params.link_sta_params.link_id =
6998                 nl80211_link_id_or_invalid(info->attrs);
6999
7000         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7001                 /* If MLD_ADDR attribute is set then this is an MLD station
7002                  * and the MLD_ADDR attribute holds the MLD address and the
7003                  * MAC attribute holds for the LINK address.
7004                  * In that case, the link_id is also expected to be valid.
7005                  */
7006                 if (params.link_sta_params.link_id < 0)
7007                         return -EINVAL;
7008
7009                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7010                 params.link_sta_params.mld_mac = mac_addr;
7011                 params.link_sta_params.link_mac =
7012                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7013                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7014                         return -EINVAL;
7015         } else {
7016                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7017         }
7018
7019
7020         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7021                 params.link_sta_params.supported_rates =
7022                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7023                 params.link_sta_params.supported_rates_len =
7024                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7025         }
7026
7027         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7028                 params.capability =
7029                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7030                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7031         }
7032
7033         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7034                 params.ext_capab =
7035                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7036                 params.ext_capab_len =
7037                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7038         }
7039
7040         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7041                 return -EINVAL;
7042
7043         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7044                 params.plink_action =
7045                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7046
7047         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7048                 params.plink_state =
7049                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7050                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7051                         params.peer_aid = nla_get_u16(
7052                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7053                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7054         }
7055
7056         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7057                 params.local_pm = nla_get_u32(
7058                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7059
7060         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7061                 params.link_sta_params.opmode_notif_used = true;
7062                 params.link_sta_params.opmode_notif =
7063                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7064         }
7065
7066         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7067                 params.link_sta_params.he_6ghz_capa =
7068                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7069
7070         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7071                 params.airtime_weight =
7072                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7073
7074         if (params.airtime_weight &&
7075             !wiphy_ext_feature_isset(&rdev->wiphy,
7076                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7077                 return -EOPNOTSUPP;
7078
7079         err = nl80211_parse_sta_txpower_setting(info,
7080                                                 &params.link_sta_params.txpwr,
7081                                                 &params.link_sta_params.txpwr_set);
7082         if (err)
7083                 return err;
7084
7085         /* Include parameters for TDLS peer (will check later) */
7086         err = nl80211_set_station_tdls(info, &params);
7087         if (err)
7088                 return err;
7089
7090         params.vlan = get_vlan(info, rdev);
7091         if (IS_ERR(params.vlan))
7092                 return PTR_ERR(params.vlan);
7093
7094         switch (dev->ieee80211_ptr->iftype) {
7095         case NL80211_IFTYPE_AP:
7096         case NL80211_IFTYPE_AP_VLAN:
7097         case NL80211_IFTYPE_P2P_GO:
7098         case NL80211_IFTYPE_P2P_CLIENT:
7099         case NL80211_IFTYPE_STATION:
7100         case NL80211_IFTYPE_ADHOC:
7101         case NL80211_IFTYPE_MESH_POINT:
7102                 break;
7103         default:
7104                 err = -EOPNOTSUPP;
7105                 goto out_put_vlan;
7106         }
7107
7108         /* driver will call cfg80211_check_station_change() */
7109         wdev_lock(dev->ieee80211_ptr);
7110         err = rdev_change_station(rdev, dev, mac_addr, &params);
7111         wdev_unlock(dev->ieee80211_ptr);
7112
7113  out_put_vlan:
7114         dev_put(params.vlan);
7115
7116         return err;
7117 }
7118
7119 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7120 {
7121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7122         int err;
7123         struct net_device *dev = info->user_ptr[1];
7124         struct wireless_dev *wdev = dev->ieee80211_ptr;
7125         struct station_parameters params;
7126         u8 *mac_addr = NULL;
7127         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7128                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7129
7130         memset(&params, 0, sizeof(params));
7131
7132         if (!rdev->ops->add_station)
7133                 return -EOPNOTSUPP;
7134
7135         if (!info->attrs[NL80211_ATTR_MAC])
7136                 return -EINVAL;
7137
7138         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7139                 return -EINVAL;
7140
7141         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7142                 return -EINVAL;
7143
7144         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7145             !info->attrs[NL80211_ATTR_PEER_AID])
7146                 return -EINVAL;
7147
7148         params.link_sta_params.link_id =
7149                 nl80211_link_id_or_invalid(info->attrs);
7150
7151         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7152                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7153                 params.link_sta_params.mld_mac = mac_addr;
7154                 params.link_sta_params.link_mac =
7155                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7156                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7157                         return -EINVAL;
7158         } else {
7159                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7160         }
7161
7162         params.link_sta_params.supported_rates =
7163                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7164         params.link_sta_params.supported_rates_len =
7165                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7166         params.listen_interval =
7167                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7168
7169         if (info->attrs[NL80211_ATTR_VLAN_ID])
7170                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7171
7172         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7173                 params.support_p2p_ps =
7174                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7175         } else {
7176                 /*
7177                  * if not specified, assume it's supported for P2P GO interface,
7178                  * and is NOT supported for AP interface
7179                  */
7180                 params.support_p2p_ps =
7181                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7182         }
7183
7184         if (info->attrs[NL80211_ATTR_PEER_AID])
7185                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7186         else
7187                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7188
7189         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7190                 params.capability =
7191                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7192                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7193         }
7194
7195         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7196                 params.ext_capab =
7197                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7198                 params.ext_capab_len =
7199                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7200         }
7201
7202         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7203                 params.link_sta_params.ht_capa =
7204                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7205
7206         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7207                 params.link_sta_params.vht_capa =
7208                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7209
7210         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7211                 params.link_sta_params.he_capa =
7212                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7213                 params.link_sta_params.he_capa_len =
7214                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7215
7216                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7217                         params.link_sta_params.eht_capa =
7218                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7219                         params.link_sta_params.eht_capa_len =
7220                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7221
7222                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7223                                                         (const u8 *)params.link_sta_params.eht_capa,
7224                                                         params.link_sta_params.eht_capa_len,
7225                                                         false))
7226                                 return -EINVAL;
7227                 }
7228         }
7229
7230         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7231                 params.link_sta_params.he_6ghz_capa =
7232                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7233
7234         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7235                 params.link_sta_params.opmode_notif_used = true;
7236                 params.link_sta_params.opmode_notif =
7237                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7238         }
7239
7240         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7241                 params.plink_action =
7242                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7243
7244         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7245                 params.airtime_weight =
7246                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7247
7248         if (params.airtime_weight &&
7249             !wiphy_ext_feature_isset(&rdev->wiphy,
7250                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7251                 return -EOPNOTSUPP;
7252
7253         err = nl80211_parse_sta_txpower_setting(info,
7254                                                 &params.link_sta_params.txpwr,
7255                                                 &params.link_sta_params.txpwr_set);
7256         if (err)
7257                 return err;
7258
7259         err = nl80211_parse_sta_channel_info(info, &params);
7260         if (err)
7261                 return err;
7262
7263         err = nl80211_parse_sta_wme(info, &params);
7264         if (err)
7265                 return err;
7266
7267         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7268                 return -EINVAL;
7269
7270         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7271          * as userspace might just pass through the capabilities from the IEs
7272          * directly, rather than enforcing this restriction and returning an
7273          * error in this case.
7274          */
7275         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7276                 params.link_sta_params.ht_capa = NULL;
7277                 params.link_sta_params.vht_capa = NULL;
7278
7279                 /* HE and EHT require WME */
7280                 if (params.link_sta_params.he_capa_len ||
7281                     params.link_sta_params.he_6ghz_capa ||
7282                     params.link_sta_params.eht_capa_len)
7283                         return -EINVAL;
7284         }
7285
7286         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7287         if (params.link_sta_params.he_6ghz_capa &&
7288             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7289                 return -EINVAL;
7290
7291         /* When you run into this, adjust the code below for the new flag */
7292         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7293
7294         switch (dev->ieee80211_ptr->iftype) {
7295         case NL80211_IFTYPE_AP:
7296         case NL80211_IFTYPE_AP_VLAN:
7297         case NL80211_IFTYPE_P2P_GO:
7298                 /* ignore WME attributes if iface/sta is not capable */
7299                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7300                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7301                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7302
7303                 /* TDLS peers cannot be added */
7304                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7305                     info->attrs[NL80211_ATTR_PEER_AID])
7306                         return -EINVAL;
7307                 /* but don't bother the driver with it */
7308                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7309
7310                 /* allow authenticated/associated only if driver handles it */
7311                 if (!(rdev->wiphy.features &
7312                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7313                     params.sta_flags_mask & auth_assoc)
7314                         return -EINVAL;
7315
7316                 /* Older userspace, or userspace wanting to be compatible with
7317                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7318                  * and assoc flags in the mask, but assumes the station will be
7319                  * added as associated anyway since this was the required driver
7320                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7321                  * introduced.
7322                  * In order to not bother drivers with this quirk in the API
7323                  * set the flags in both the mask and set for new stations in
7324                  * this case.
7325                  */
7326                 if (!(params.sta_flags_mask & auth_assoc)) {
7327                         params.sta_flags_mask |= auth_assoc;
7328                         params.sta_flags_set |= auth_assoc;
7329                 }
7330
7331                 /* must be last in here for error handling */
7332                 params.vlan = get_vlan(info, rdev);
7333                 if (IS_ERR(params.vlan))
7334                         return PTR_ERR(params.vlan);
7335                 break;
7336         case NL80211_IFTYPE_MESH_POINT:
7337                 /* ignore uAPSD data */
7338                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7339
7340                 /* associated is disallowed */
7341                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7342                         return -EINVAL;
7343                 /* TDLS peers cannot be added */
7344                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7345                     info->attrs[NL80211_ATTR_PEER_AID])
7346                         return -EINVAL;
7347                 break;
7348         case NL80211_IFTYPE_STATION:
7349         case NL80211_IFTYPE_P2P_CLIENT:
7350                 /* ignore uAPSD data */
7351                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7352
7353                 /* these are disallowed */
7354                 if (params.sta_flags_mask &
7355                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7356                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7357                         return -EINVAL;
7358                 /* Only TDLS peers can be added */
7359                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7360                         return -EINVAL;
7361                 /* Can only add if TDLS ... */
7362                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7363                         return -EOPNOTSUPP;
7364                 /* ... with external setup is supported */
7365                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7366                         return -EOPNOTSUPP;
7367                 /*
7368                  * Older wpa_supplicant versions always mark the TDLS peer
7369                  * as authorized, but it shouldn't yet be.
7370                  */
7371                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7372                 break;
7373         default:
7374                 return -EOPNOTSUPP;
7375         }
7376
7377         /* be aware of params.vlan when changing code here */
7378
7379         wdev_lock(dev->ieee80211_ptr);
7380         if (wdev->valid_links) {
7381                 if (params.link_sta_params.link_id < 0) {
7382                         err = -EINVAL;
7383                         goto out;
7384                 }
7385                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7386                         err = -ENOLINK;
7387                         goto out;
7388                 }
7389         } else {
7390                 if (params.link_sta_params.link_id >= 0) {
7391                         err = -EINVAL;
7392                         goto out;
7393                 }
7394         }
7395         err = rdev_add_station(rdev, dev, mac_addr, &params);
7396 out:
7397         wdev_unlock(dev->ieee80211_ptr);
7398         dev_put(params.vlan);
7399         return err;
7400 }
7401
7402 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7403 {
7404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7405         struct net_device *dev = info->user_ptr[1];
7406         struct station_del_parameters params;
7407         int ret;
7408
7409         memset(&params, 0, sizeof(params));
7410
7411         if (info->attrs[NL80211_ATTR_MAC])
7412                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7413
7414         switch (dev->ieee80211_ptr->iftype) {
7415         case NL80211_IFTYPE_AP:
7416         case NL80211_IFTYPE_AP_VLAN:
7417         case NL80211_IFTYPE_MESH_POINT:
7418         case NL80211_IFTYPE_P2P_GO:
7419                 /* always accept these */
7420                 break;
7421         case NL80211_IFTYPE_ADHOC:
7422                 /* conditionally accept */
7423                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7424                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7425                         break;
7426                 return -EINVAL;
7427         default:
7428                 return -EINVAL;
7429         }
7430
7431         if (!rdev->ops->del_station)
7432                 return -EOPNOTSUPP;
7433
7434         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7435                 params.subtype =
7436                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7437                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7438                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7439                         return -EINVAL;
7440         } else {
7441                 /* Default to Deauthentication frame */
7442                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7443         }
7444
7445         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7446                 params.reason_code =
7447                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7448                 if (params.reason_code == 0)
7449                         return -EINVAL; /* 0 is reserved */
7450         } else {
7451                 /* Default to reason code 2 */
7452                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7453         }
7454
7455         wdev_lock(dev->ieee80211_ptr);
7456         ret = rdev_del_station(rdev, dev, &params);
7457         wdev_unlock(dev->ieee80211_ptr);
7458
7459         return ret;
7460 }
7461
7462 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7463                                 int flags, struct net_device *dev,
7464                                 u8 *dst, u8 *next_hop,
7465                                 struct mpath_info *pinfo)
7466 {
7467         void *hdr;
7468         struct nlattr *pinfoattr;
7469
7470         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7471         if (!hdr)
7472                 return -1;
7473
7474         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7475             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7476             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7477             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7478                 goto nla_put_failure;
7479
7480         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7481         if (!pinfoattr)
7482                 goto nla_put_failure;
7483         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7484             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7485                         pinfo->frame_qlen))
7486                 goto nla_put_failure;
7487         if (((pinfo->filled & MPATH_INFO_SN) &&
7488              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7489             ((pinfo->filled & MPATH_INFO_METRIC) &&
7490              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7491                          pinfo->metric)) ||
7492             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7493              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7494                          pinfo->exptime)) ||
7495             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7496              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7497                         pinfo->flags)) ||
7498             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7499              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7500                          pinfo->discovery_timeout)) ||
7501             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7502              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7503                         pinfo->discovery_retries)) ||
7504             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7505              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7506                         pinfo->hop_count)) ||
7507             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7508              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7509                          pinfo->path_change_count)))
7510                 goto nla_put_failure;
7511
7512         nla_nest_end(msg, pinfoattr);
7513
7514         genlmsg_end(msg, hdr);
7515         return 0;
7516
7517  nla_put_failure:
7518         genlmsg_cancel(msg, hdr);
7519         return -EMSGSIZE;
7520 }
7521
7522 static int nl80211_dump_mpath(struct sk_buff *skb,
7523                               struct netlink_callback *cb)
7524 {
7525         struct mpath_info pinfo;
7526         struct cfg80211_registered_device *rdev;
7527         struct wireless_dev *wdev;
7528         u8 dst[ETH_ALEN];
7529         u8 next_hop[ETH_ALEN];
7530         int path_idx = cb->args[2];
7531         int err;
7532
7533         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7534         if (err)
7535                 return err;
7536         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7537         __acquire(&rdev->wiphy.mtx);
7538
7539         if (!rdev->ops->dump_mpath) {
7540                 err = -EOPNOTSUPP;
7541                 goto out_err;
7542         }
7543
7544         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7545                 err = -EOPNOTSUPP;
7546                 goto out_err;
7547         }
7548
7549         while (1) {
7550                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7551                                       next_hop, &pinfo);
7552                 if (err == -ENOENT)
7553                         break;
7554                 if (err)
7555                         goto out_err;
7556
7557                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7558                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7559                                        wdev->netdev, dst, next_hop,
7560                                        &pinfo) < 0)
7561                         goto out;
7562
7563                 path_idx++;
7564         }
7565
7566  out:
7567         cb->args[2] = path_idx;
7568         err = skb->len;
7569  out_err:
7570         wiphy_unlock(&rdev->wiphy);
7571         return err;
7572 }
7573
7574 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7575 {
7576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7577         int err;
7578         struct net_device *dev = info->user_ptr[1];
7579         struct mpath_info pinfo;
7580         struct sk_buff *msg;
7581         u8 *dst = NULL;
7582         u8 next_hop[ETH_ALEN];
7583
7584         memset(&pinfo, 0, sizeof(pinfo));
7585
7586         if (!info->attrs[NL80211_ATTR_MAC])
7587                 return -EINVAL;
7588
7589         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7590
7591         if (!rdev->ops->get_mpath)
7592                 return -EOPNOTSUPP;
7593
7594         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7595                 return -EOPNOTSUPP;
7596
7597         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7598         if (err)
7599                 return err;
7600
7601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7602         if (!msg)
7603                 return -ENOMEM;
7604
7605         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7606                                  dev, dst, next_hop, &pinfo) < 0) {
7607                 nlmsg_free(msg);
7608                 return -ENOBUFS;
7609         }
7610
7611         return genlmsg_reply(msg, info);
7612 }
7613
7614 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7615 {
7616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7617         struct net_device *dev = info->user_ptr[1];
7618         u8 *dst = NULL;
7619         u8 *next_hop = NULL;
7620
7621         if (!info->attrs[NL80211_ATTR_MAC])
7622                 return -EINVAL;
7623
7624         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7625                 return -EINVAL;
7626
7627         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7628         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7629
7630         if (!rdev->ops->change_mpath)
7631                 return -EOPNOTSUPP;
7632
7633         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7634                 return -EOPNOTSUPP;
7635
7636         return rdev_change_mpath(rdev, dev, dst, next_hop);
7637 }
7638
7639 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7640 {
7641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7642         struct net_device *dev = info->user_ptr[1];
7643         u8 *dst = NULL;
7644         u8 *next_hop = NULL;
7645
7646         if (!info->attrs[NL80211_ATTR_MAC])
7647                 return -EINVAL;
7648
7649         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7650                 return -EINVAL;
7651
7652         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7653         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7654
7655         if (!rdev->ops->add_mpath)
7656                 return -EOPNOTSUPP;
7657
7658         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7659                 return -EOPNOTSUPP;
7660
7661         return rdev_add_mpath(rdev, dev, dst, next_hop);
7662 }
7663
7664 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7665 {
7666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7667         struct net_device *dev = info->user_ptr[1];
7668         u8 *dst = NULL;
7669
7670         if (info->attrs[NL80211_ATTR_MAC])
7671                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7672
7673         if (!rdev->ops->del_mpath)
7674                 return -EOPNOTSUPP;
7675
7676         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7677                 return -EOPNOTSUPP;
7678
7679         return rdev_del_mpath(rdev, dev, dst);
7680 }
7681
7682 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7683 {
7684         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7685         int err;
7686         struct net_device *dev = info->user_ptr[1];
7687         struct mpath_info pinfo;
7688         struct sk_buff *msg;
7689         u8 *dst = NULL;
7690         u8 mpp[ETH_ALEN];
7691
7692         memset(&pinfo, 0, sizeof(pinfo));
7693
7694         if (!info->attrs[NL80211_ATTR_MAC])
7695                 return -EINVAL;
7696
7697         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7698
7699         if (!rdev->ops->get_mpp)
7700                 return -EOPNOTSUPP;
7701
7702         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7703                 return -EOPNOTSUPP;
7704
7705         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7706         if (err)
7707                 return err;
7708
7709         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7710         if (!msg)
7711                 return -ENOMEM;
7712
7713         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7714                                dev, dst, mpp, &pinfo) < 0) {
7715                 nlmsg_free(msg);
7716                 return -ENOBUFS;
7717         }
7718
7719         return genlmsg_reply(msg, info);
7720 }
7721
7722 static int nl80211_dump_mpp(struct sk_buff *skb,
7723                             struct netlink_callback *cb)
7724 {
7725         struct mpath_info pinfo;
7726         struct cfg80211_registered_device *rdev;
7727         struct wireless_dev *wdev;
7728         u8 dst[ETH_ALEN];
7729         u8 mpp[ETH_ALEN];
7730         int path_idx = cb->args[2];
7731         int err;
7732
7733         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7734         if (err)
7735                 return err;
7736         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7737         __acquire(&rdev->wiphy.mtx);
7738
7739         if (!rdev->ops->dump_mpp) {
7740                 err = -EOPNOTSUPP;
7741                 goto out_err;
7742         }
7743
7744         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7745                 err = -EOPNOTSUPP;
7746                 goto out_err;
7747         }
7748
7749         while (1) {
7750                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7751                                     mpp, &pinfo);
7752                 if (err == -ENOENT)
7753                         break;
7754                 if (err)
7755                         goto out_err;
7756
7757                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7758                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7759                                        wdev->netdev, dst, mpp,
7760                                        &pinfo) < 0)
7761                         goto out;
7762
7763                 path_idx++;
7764         }
7765
7766  out:
7767         cb->args[2] = path_idx;
7768         err = skb->len;
7769  out_err:
7770         wiphy_unlock(&rdev->wiphy);
7771         return err;
7772 }
7773
7774 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7775 {
7776         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7777         struct net_device *dev = info->user_ptr[1];
7778         struct wireless_dev *wdev = dev->ieee80211_ptr;
7779         struct bss_parameters params;
7780         int err;
7781
7782         memset(&params, 0, sizeof(params));
7783         /* default to not changing parameters */
7784         params.use_cts_prot = -1;
7785         params.use_short_preamble = -1;
7786         params.use_short_slot_time = -1;
7787         params.ap_isolate = -1;
7788         params.ht_opmode = -1;
7789         params.p2p_ctwindow = -1;
7790         params.p2p_opp_ps = -1;
7791
7792         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7793                 params.use_cts_prot =
7794                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7795         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7796                 params.use_short_preamble =
7797                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7798         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7799                 params.use_short_slot_time =
7800                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7801         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7802                 params.basic_rates =
7803                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7804                 params.basic_rates_len =
7805                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7806         }
7807         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7808                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7809         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7810                 params.ht_opmode =
7811                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7812
7813         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7814                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7815                         return -EINVAL;
7816                 params.p2p_ctwindow =
7817                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7818                 if (params.p2p_ctwindow != 0 &&
7819                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7820                         return -EINVAL;
7821         }
7822
7823         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7824                 u8 tmp;
7825
7826                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7827                         return -EINVAL;
7828                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7829                 params.p2p_opp_ps = tmp;
7830                 if (params.p2p_opp_ps &&
7831                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7832                         return -EINVAL;
7833         }
7834
7835         if (!rdev->ops->change_bss)
7836                 return -EOPNOTSUPP;
7837
7838         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7839             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7840                 return -EOPNOTSUPP;
7841
7842         wdev_lock(wdev);
7843         err = rdev_change_bss(rdev, dev, &params);
7844         wdev_unlock(wdev);
7845
7846         return err;
7847 }
7848
7849 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7850 {
7851         char *data = NULL;
7852         bool is_indoor;
7853         enum nl80211_user_reg_hint_type user_reg_hint_type;
7854         u32 owner_nlportid;
7855
7856         /*
7857          * You should only get this when cfg80211 hasn't yet initialized
7858          * completely when built-in to the kernel right between the time
7859          * window between nl80211_init() and regulatory_init(), if that is
7860          * even possible.
7861          */
7862         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7863                 return -EINPROGRESS;
7864
7865         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7866                 user_reg_hint_type =
7867                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7868         else
7869                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7870
7871         switch (user_reg_hint_type) {
7872         case NL80211_USER_REG_HINT_USER:
7873         case NL80211_USER_REG_HINT_CELL_BASE:
7874                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7875                         return -EINVAL;
7876
7877                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7878                 return regulatory_hint_user(data, user_reg_hint_type);
7879         case NL80211_USER_REG_HINT_INDOOR:
7880                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7881                         owner_nlportid = info->snd_portid;
7882                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7883                 } else {
7884                         owner_nlportid = 0;
7885                         is_indoor = true;
7886                 }
7887
7888                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7889         default:
7890                 return -EINVAL;
7891         }
7892 }
7893
7894 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7895 {
7896         return reg_reload_regdb();
7897 }
7898
7899 static int nl80211_get_mesh_config(struct sk_buff *skb,
7900                                    struct genl_info *info)
7901 {
7902         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7903         struct net_device *dev = info->user_ptr[1];
7904         struct wireless_dev *wdev = dev->ieee80211_ptr;
7905         struct mesh_config cur_params;
7906         int err = 0;
7907         void *hdr;
7908         struct nlattr *pinfoattr;
7909         struct sk_buff *msg;
7910
7911         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7912                 return -EOPNOTSUPP;
7913
7914         if (!rdev->ops->get_mesh_config)
7915                 return -EOPNOTSUPP;
7916
7917         wdev_lock(wdev);
7918         /* If not connected, get default parameters */
7919         if (!wdev->u.mesh.id_len)
7920                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7921         else
7922                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7923         wdev_unlock(wdev);
7924
7925         if (err)
7926                 return err;
7927
7928         /* Draw up a netlink message to send back */
7929         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7930         if (!msg)
7931                 return -ENOMEM;
7932         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7933                              NL80211_CMD_GET_MESH_CONFIG);
7934         if (!hdr)
7935                 goto out;
7936         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7937         if (!pinfoattr)
7938                 goto nla_put_failure;
7939         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7940             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7941                         cur_params.dot11MeshRetryTimeout) ||
7942             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7943                         cur_params.dot11MeshConfirmTimeout) ||
7944             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7945                         cur_params.dot11MeshHoldingTimeout) ||
7946             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7947                         cur_params.dot11MeshMaxPeerLinks) ||
7948             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7949                        cur_params.dot11MeshMaxRetries) ||
7950             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7951                        cur_params.dot11MeshTTL) ||
7952             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7953                        cur_params.element_ttl) ||
7954             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7955                        cur_params.auto_open_plinks) ||
7956             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7957                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7958             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7959                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7960             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7961                         cur_params.path_refresh_time) ||
7962             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7963                         cur_params.min_discovery_timeout) ||
7964             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7965                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7966             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7967                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7968             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7969                         cur_params.dot11MeshHWMPperrMinInterval) ||
7970             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7971                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7972             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7973                        cur_params.dot11MeshHWMPRootMode) ||
7974             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7975                         cur_params.dot11MeshHWMPRannInterval) ||
7976             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7977                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7978             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7979                        cur_params.dot11MeshForwarding) ||
7980             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7981                         cur_params.rssi_threshold) ||
7982             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7983                         cur_params.ht_opmode) ||
7984             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7985                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7986             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7987                         cur_params.dot11MeshHWMProotInterval) ||
7988             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7989                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7990             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7991                         cur_params.power_mode) ||
7992             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7993                         cur_params.dot11MeshAwakeWindowDuration) ||
7994             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7995                         cur_params.plink_timeout) ||
7996             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7997                        cur_params.dot11MeshConnectedToMeshGate) ||
7998             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7999                        cur_params.dot11MeshNolearn) ||
8000             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8001                        cur_params.dot11MeshConnectedToAuthServer))
8002                 goto nla_put_failure;
8003         nla_nest_end(msg, pinfoattr);
8004         genlmsg_end(msg, hdr);
8005         return genlmsg_reply(msg, info);
8006
8007  nla_put_failure:
8008  out:
8009         nlmsg_free(msg);
8010         return -ENOBUFS;
8011 }
8012
8013 static const struct nla_policy
8014 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8015         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8016                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8017         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8018                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8019         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8020                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8021         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8022                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8023         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8024         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8025         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8026         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8027         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8028                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8029         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8030         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8031         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8032         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8033         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8034                 NLA_POLICY_MIN(NLA_U16, 1),
8035         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8036                 NLA_POLICY_MIN(NLA_U16, 1),
8037         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8038                 NLA_POLICY_MIN(NLA_U16, 1),
8039         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8040         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8041                 NLA_POLICY_MIN(NLA_U16, 1),
8042         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8043         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8044         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8045                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8046         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8047         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8048         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8049                 NLA_POLICY_MIN(NLA_U16, 1),
8050         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8051                 NLA_POLICY_MIN(NLA_U16, 1),
8052         [NL80211_MESHCONF_POWER_MODE] =
8053                 NLA_POLICY_RANGE(NLA_U32,
8054                                  NL80211_MESH_POWER_ACTIVE,
8055                                  NL80211_MESH_POWER_MAX),
8056         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8057         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8058         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8059         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8060         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8061 };
8062
8063 static const struct nla_policy
8064         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8065         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8066         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8067         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8068         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8069         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8070         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8071         [NL80211_MESH_SETUP_IE] =
8072                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8073                                        IEEE80211_MAX_DATA_LEN),
8074         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8075 };
8076
8077 static int nl80211_parse_mesh_config(struct genl_info *info,
8078                                      struct mesh_config *cfg,
8079                                      u32 *mask_out)
8080 {
8081         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8082         u32 mask = 0;
8083         u16 ht_opmode;
8084
8085 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8086 do {                                                                    \
8087         if (tb[attr]) {                                                 \
8088                 cfg->param = fn(tb[attr]);                              \
8089                 mask |= BIT((attr) - 1);                                \
8090         }                                                               \
8091 } while (0)
8092
8093         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8094                 return -EINVAL;
8095         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8096                 return -EINVAL;
8097
8098         /* This makes sure that there aren't more than 32 mesh config
8099          * parameters (otherwise our bitfield scheme would not work.) */
8100         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8101
8102         /* Fill in the params struct */
8103         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8104                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8105         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8106                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8107                                   nla_get_u16);
8108         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8109                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8110                                   nla_get_u16);
8111         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8112                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8113                                   nla_get_u16);
8114         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8115                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8116         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8117                                   NL80211_MESHCONF_TTL, nla_get_u8);
8118         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8119                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8120         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8121                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8122                                   nla_get_u8);
8123         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8124                                   mask,
8125                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8126                                   nla_get_u32);
8127         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8128                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8129                                   nla_get_u8);
8130         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8131                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8132                                   nla_get_u32);
8133         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8134             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8135                 return -EINVAL;
8136         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8137                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8138                                   nla_get_u16);
8139         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8140                                   mask,
8141                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8142                                   nla_get_u32);
8143         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8144             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8145              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8146                 return -EINVAL;
8147         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8148                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8149                                   nla_get_u16);
8150         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8151                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8152                                   nla_get_u16);
8153         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8154                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8155                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8156                                   nla_get_u16);
8157         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8158                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8159         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8160                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8161                                   nla_get_u16);
8162         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8163                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8164                                   nla_get_u8);
8165         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8166                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8167         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8168                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8169                                   nla_get_s32);
8170         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8171                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8172                                   nla_get_u8);
8173         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8174                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8175                                   nla_get_u8);
8176         /*
8177          * Check HT operation mode based on
8178          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8179          */
8180         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8181                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8182
8183                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8184                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8185                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8186                         return -EINVAL;
8187
8188                 /* NON_HT_STA bit is reserved, but some programs set it */
8189                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8190
8191                 cfg->ht_opmode = ht_opmode;
8192                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8193         }
8194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8195                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8196                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8197                                   nla_get_u32);
8198         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8199             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8200              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8201                 return -EINVAL;
8202         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8203                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8204                                   nla_get_u16);
8205         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8206                                   mask,
8207                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8208                                   nla_get_u16);
8209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8210                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8212                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8214                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8216                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8217         if (mask_out)
8218                 *mask_out = mask;
8219
8220         return 0;
8221
8222 #undef FILL_IN_MESH_PARAM_IF_SET
8223 }
8224
8225 static int nl80211_parse_mesh_setup(struct genl_info *info,
8226                                      struct mesh_setup *setup)
8227 {
8228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8229         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8230
8231         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8232                 return -EINVAL;
8233         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8234                 return -EINVAL;
8235
8236         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8237                 setup->sync_method =
8238                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8239                  IEEE80211_SYNC_METHOD_VENDOR :
8240                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8241
8242         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8243                 setup->path_sel_proto =
8244                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8245                  IEEE80211_PATH_PROTOCOL_VENDOR :
8246                  IEEE80211_PATH_PROTOCOL_HWMP;
8247
8248         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8249                 setup->path_metric =
8250                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8251                  IEEE80211_PATH_METRIC_VENDOR :
8252                  IEEE80211_PATH_METRIC_AIRTIME;
8253
8254         if (tb[NL80211_MESH_SETUP_IE]) {
8255                 struct nlattr *ieattr =
8256                         tb[NL80211_MESH_SETUP_IE];
8257                 setup->ie = nla_data(ieattr);
8258                 setup->ie_len = nla_len(ieattr);
8259         }
8260         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8261             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8262                 return -EINVAL;
8263         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8264         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8265         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8266         if (setup->is_secure)
8267                 setup->user_mpm = true;
8268
8269         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8270                 if (!setup->user_mpm)
8271                         return -EINVAL;
8272                 setup->auth_id =
8273                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8274         }
8275
8276         return 0;
8277 }
8278
8279 static int nl80211_update_mesh_config(struct sk_buff *skb,
8280                                       struct genl_info *info)
8281 {
8282         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8283         struct net_device *dev = info->user_ptr[1];
8284         struct wireless_dev *wdev = dev->ieee80211_ptr;
8285         struct mesh_config cfg;
8286         u32 mask;
8287         int err;
8288
8289         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8290                 return -EOPNOTSUPP;
8291
8292         if (!rdev->ops->update_mesh_config)
8293                 return -EOPNOTSUPP;
8294
8295         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8296         if (err)
8297                 return err;
8298
8299         wdev_lock(wdev);
8300         if (!wdev->u.mesh.id_len)
8301                 err = -ENOLINK;
8302
8303         if (!err)
8304                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8305
8306         wdev_unlock(wdev);
8307
8308         return err;
8309 }
8310
8311 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8312                               struct sk_buff *msg)
8313 {
8314         struct nlattr *nl_reg_rules;
8315         unsigned int i;
8316
8317         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8318             (regdom->dfs_region &&
8319              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8320                 goto nla_put_failure;
8321
8322         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8323         if (!nl_reg_rules)
8324                 goto nla_put_failure;
8325
8326         for (i = 0; i < regdom->n_reg_rules; i++) {
8327                 struct nlattr *nl_reg_rule;
8328                 const struct ieee80211_reg_rule *reg_rule;
8329                 const struct ieee80211_freq_range *freq_range;
8330                 const struct ieee80211_power_rule *power_rule;
8331                 unsigned int max_bandwidth_khz;
8332
8333                 reg_rule = &regdom->reg_rules[i];
8334                 freq_range = &reg_rule->freq_range;
8335                 power_rule = &reg_rule->power_rule;
8336
8337                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8338                 if (!nl_reg_rule)
8339                         goto nla_put_failure;
8340
8341                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8342                 if (!max_bandwidth_khz)
8343                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8344                                                                   reg_rule);
8345
8346                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8347                                 reg_rule->flags) ||
8348                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8349                                 freq_range->start_freq_khz) ||
8350                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8351                                 freq_range->end_freq_khz) ||
8352                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8353                                 max_bandwidth_khz) ||
8354                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8355                                 power_rule->max_antenna_gain) ||
8356                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8357                                 power_rule->max_eirp) ||
8358                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8359                                 reg_rule->dfs_cac_ms))
8360                         goto nla_put_failure;
8361
8362                 nla_nest_end(msg, nl_reg_rule);
8363         }
8364
8365         nla_nest_end(msg, nl_reg_rules);
8366         return 0;
8367
8368 nla_put_failure:
8369         return -EMSGSIZE;
8370 }
8371
8372 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8373 {
8374         const struct ieee80211_regdomain *regdom = NULL;
8375         struct cfg80211_registered_device *rdev;
8376         struct wiphy *wiphy = NULL;
8377         struct sk_buff *msg;
8378         int err = -EMSGSIZE;
8379         void *hdr;
8380
8381         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8382         if (!msg)
8383                 return -ENOBUFS;
8384
8385         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8386                              NL80211_CMD_GET_REG);
8387         if (!hdr)
8388                 goto put_failure;
8389
8390         rtnl_lock();
8391
8392         if (info->attrs[NL80211_ATTR_WIPHY]) {
8393                 bool self_managed;
8394
8395                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8396                 if (IS_ERR(rdev)) {
8397                         err = PTR_ERR(rdev);
8398                         goto nla_put_failure;
8399                 }
8400
8401                 wiphy = &rdev->wiphy;
8402                 self_managed = wiphy->regulatory_flags &
8403                                REGULATORY_WIPHY_SELF_MANAGED;
8404
8405                 rcu_read_lock();
8406
8407                 regdom = get_wiphy_regdom(wiphy);
8408
8409                 /* a self-managed-reg device must have a private regdom */
8410                 if (WARN_ON(!regdom && self_managed)) {
8411                         err = -EINVAL;
8412                         goto nla_put_failure_rcu;
8413                 }
8414
8415                 if (regdom &&
8416                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8417                         goto nla_put_failure_rcu;
8418         } else {
8419                 rcu_read_lock();
8420         }
8421
8422         if (!wiphy && reg_last_request_cell_base() &&
8423             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8424                         NL80211_USER_REG_HINT_CELL_BASE))
8425                 goto nla_put_failure_rcu;
8426
8427         if (!regdom)
8428                 regdom = rcu_dereference(cfg80211_regdomain);
8429
8430         if (nl80211_put_regdom(regdom, msg))
8431                 goto nla_put_failure_rcu;
8432
8433         rcu_read_unlock();
8434
8435         genlmsg_end(msg, hdr);
8436         rtnl_unlock();
8437         return genlmsg_reply(msg, info);
8438
8439 nla_put_failure_rcu:
8440         rcu_read_unlock();
8441 nla_put_failure:
8442         rtnl_unlock();
8443 put_failure:
8444         nlmsg_free(msg);
8445         return err;
8446 }
8447
8448 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8449                                u32 seq, int flags, struct wiphy *wiphy,
8450                                const struct ieee80211_regdomain *regdom)
8451 {
8452         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8453                                    NL80211_CMD_GET_REG);
8454
8455         if (!hdr)
8456                 return -1;
8457
8458         genl_dump_check_consistent(cb, hdr);
8459
8460         if (nl80211_put_regdom(regdom, msg))
8461                 goto nla_put_failure;
8462
8463         if (!wiphy && reg_last_request_cell_base() &&
8464             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8465                         NL80211_USER_REG_HINT_CELL_BASE))
8466                 goto nla_put_failure;
8467
8468         if (wiphy &&
8469             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8470                 goto nla_put_failure;
8471
8472         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8473             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8474                 goto nla_put_failure;
8475
8476         genlmsg_end(msg, hdr);
8477         return 0;
8478
8479 nla_put_failure:
8480         genlmsg_cancel(msg, hdr);
8481         return -EMSGSIZE;
8482 }
8483
8484 static int nl80211_get_reg_dump(struct sk_buff *skb,
8485                                 struct netlink_callback *cb)
8486 {
8487         const struct ieee80211_regdomain *regdom = NULL;
8488         struct cfg80211_registered_device *rdev;
8489         int err, reg_idx, start = cb->args[2];
8490
8491         rcu_read_lock();
8492
8493         if (cfg80211_regdomain && start == 0) {
8494                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8495                                           NLM_F_MULTI, NULL,
8496                                           rcu_dereference(cfg80211_regdomain));
8497                 if (err < 0)
8498                         goto out_err;
8499         }
8500
8501         /* the global regdom is idx 0 */
8502         reg_idx = 1;
8503         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8504                 regdom = get_wiphy_regdom(&rdev->wiphy);
8505                 if (!regdom)
8506                         continue;
8507
8508                 if (++reg_idx <= start)
8509                         continue;
8510
8511                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8512                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8513                 if (err < 0) {
8514                         reg_idx--;
8515                         break;
8516                 }
8517         }
8518
8519         cb->args[2] = reg_idx;
8520         err = skb->len;
8521 out_err:
8522         rcu_read_unlock();
8523         return err;
8524 }
8525
8526 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8527 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8528         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8529         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8530         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8531         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8532         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8533         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8534         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8535 };
8536
8537 static int parse_reg_rule(struct nlattr *tb[],
8538         struct ieee80211_reg_rule *reg_rule)
8539 {
8540         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8541         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8542
8543         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8544                 return -EINVAL;
8545         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8546                 return -EINVAL;
8547         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8548                 return -EINVAL;
8549         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8550                 return -EINVAL;
8551         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8552                 return -EINVAL;
8553
8554         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8555
8556         freq_range->start_freq_khz =
8557                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8558         freq_range->end_freq_khz =
8559                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8560         freq_range->max_bandwidth_khz =
8561                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8562
8563         power_rule->max_eirp =
8564                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8565
8566         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8567                 power_rule->max_antenna_gain =
8568                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8569
8570         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8571                 reg_rule->dfs_cac_ms =
8572                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8573
8574         return 0;
8575 }
8576
8577 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8578 {
8579         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8580         struct nlattr *nl_reg_rule;
8581         char *alpha2;
8582         int rem_reg_rules, r;
8583         u32 num_rules = 0, rule_idx = 0;
8584         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8585         struct ieee80211_regdomain *rd;
8586
8587         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8588                 return -EINVAL;
8589
8590         if (!info->attrs[NL80211_ATTR_REG_RULES])
8591                 return -EINVAL;
8592
8593         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8594
8595         if (info->attrs[NL80211_ATTR_DFS_REGION])
8596                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8597
8598         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8599                             rem_reg_rules) {
8600                 num_rules++;
8601                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8602                         return -EINVAL;
8603         }
8604
8605         rtnl_lock();
8606         if (!reg_is_valid_request(alpha2)) {
8607                 r = -EINVAL;
8608                 goto out;
8609         }
8610
8611         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8612         if (!rd) {
8613                 r = -ENOMEM;
8614                 goto out;
8615         }
8616
8617         rd->n_reg_rules = num_rules;
8618         rd->alpha2[0] = alpha2[0];
8619         rd->alpha2[1] = alpha2[1];
8620
8621         /*
8622          * Disable DFS master mode if the DFS region was
8623          * not supported or known on this kernel.
8624          */
8625         if (reg_supported_dfs_region(dfs_region))
8626                 rd->dfs_region = dfs_region;
8627
8628         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8629                             rem_reg_rules) {
8630                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8631                                                 nl_reg_rule, reg_rule_policy,
8632                                                 info->extack);
8633                 if (r)
8634                         goto bad_reg;
8635                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8636                 if (r)
8637                         goto bad_reg;
8638
8639                 rule_idx++;
8640
8641                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8642                         r = -EINVAL;
8643                         goto bad_reg;
8644                 }
8645         }
8646
8647         r = set_regdom(rd, REGD_SOURCE_CRDA);
8648         /* set_regdom takes ownership of rd */
8649         rd = NULL;
8650  bad_reg:
8651         kfree(rd);
8652  out:
8653         rtnl_unlock();
8654         return r;
8655 }
8656 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8657
8658 static int validate_scan_freqs(struct nlattr *freqs)
8659 {
8660         struct nlattr *attr1, *attr2;
8661         int n_channels = 0, tmp1, tmp2;
8662
8663         nla_for_each_nested(attr1, freqs, tmp1)
8664                 if (nla_len(attr1) != sizeof(u32))
8665                         return 0;
8666
8667         nla_for_each_nested(attr1, freqs, tmp1) {
8668                 n_channels++;
8669                 /*
8670                  * Some hardware has a limited channel list for
8671                  * scanning, and it is pretty much nonsensical
8672                  * to scan for a channel twice, so disallow that
8673                  * and don't require drivers to check that the
8674                  * channel list they get isn't longer than what
8675                  * they can scan, as long as they can scan all
8676                  * the channels they registered at once.
8677                  */
8678                 nla_for_each_nested(attr2, freqs, tmp2)
8679                         if (attr1 != attr2 &&
8680                             nla_get_u32(attr1) == nla_get_u32(attr2))
8681                                 return 0;
8682         }
8683
8684         return n_channels;
8685 }
8686
8687 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8688 {
8689         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8690 }
8691
8692 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8693                             struct cfg80211_bss_selection *bss_select)
8694 {
8695         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8696         struct nlattr *nest;
8697         int err;
8698         bool found = false;
8699         int i;
8700
8701         /* only process one nested attribute */
8702         nest = nla_data(nla);
8703         if (!nla_ok(nest, nla_len(nest)))
8704                 return -EINVAL;
8705
8706         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8707                                           nest, nl80211_bss_select_policy,
8708                                           NULL);
8709         if (err)
8710                 return err;
8711
8712         /* only one attribute may be given */
8713         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8714                 if (attr[i]) {
8715                         if (found)
8716                                 return -EINVAL;
8717                         found = true;
8718                 }
8719         }
8720
8721         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8722
8723         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8724                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8725
8726         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8727                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8728                 bss_select->param.band_pref =
8729                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8730                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8731                         return -EINVAL;
8732         }
8733
8734         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8735                 struct nl80211_bss_select_rssi_adjust *adj_param;
8736
8737                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8738                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8739                 bss_select->param.adjust.band = adj_param->band;
8740                 bss_select->param.adjust.delta = adj_param->delta;
8741                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8742                         return -EINVAL;
8743         }
8744
8745         /* user-space did not provide behaviour attribute */
8746         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8747                 return -EINVAL;
8748
8749         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8750                 return -EINVAL;
8751
8752         return 0;
8753 }
8754
8755 int nl80211_parse_random_mac(struct nlattr **attrs,
8756                              u8 *mac_addr, u8 *mac_addr_mask)
8757 {
8758         int i;
8759
8760         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8761                 eth_zero_addr(mac_addr);
8762                 eth_zero_addr(mac_addr_mask);
8763                 mac_addr[0] = 0x2;
8764                 mac_addr_mask[0] = 0x3;
8765
8766                 return 0;
8767         }
8768
8769         /* need both or none */
8770         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8771                 return -EINVAL;
8772
8773         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8774         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8775
8776         /* don't allow or configure an mcast address */
8777         if (!is_multicast_ether_addr(mac_addr_mask) ||
8778             is_multicast_ether_addr(mac_addr))
8779                 return -EINVAL;
8780
8781         /*
8782          * allow users to pass a MAC address that has bits set outside
8783          * of the mask, but don't bother drivers with having to deal
8784          * with such bits
8785          */
8786         for (i = 0; i < ETH_ALEN; i++)
8787                 mac_addr[i] &= mac_addr_mask[i];
8788
8789         return 0;
8790 }
8791
8792 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8793                                               struct ieee80211_channel *chan)
8794 {
8795         unsigned int link_id;
8796         bool all_ok = true;
8797
8798         ASSERT_WDEV_LOCK(wdev);
8799
8800         if (!cfg80211_beaconing_iface_active(wdev))
8801                 return true;
8802
8803         /*
8804          * FIXME: check if we have a free HW resource/link for chan
8805          *
8806          * This, as well as the FIXME below, requires knowing the link
8807          * capabilities of the hardware.
8808          */
8809
8810         /* we cannot leave radar channels */
8811         for_each_valid_link(wdev, link_id) {
8812                 struct cfg80211_chan_def *chandef;
8813
8814                 chandef = wdev_chandef(wdev, link_id);
8815                 if (!chandef)
8816                         continue;
8817
8818                 /*
8819                  * FIXME: don't require all_ok, but rather check only the
8820                  *        correct HW resource/link onto which 'chan' falls,
8821                  *        as only that link leaves the channel for doing
8822                  *        the off-channel operation.
8823                  */
8824
8825                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
8826                         all_ok = false;
8827         }
8828
8829         if (all_ok)
8830                 return true;
8831
8832         return regulatory_pre_cac_allowed(wdev->wiphy);
8833 }
8834
8835 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8836                                     enum nl80211_ext_feature_index feat)
8837 {
8838         if (!(flags & flag))
8839                 return true;
8840         if (wiphy_ext_feature_isset(wiphy, feat))
8841                 return true;
8842         return false;
8843 }
8844
8845 static int
8846 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8847                          void *request, struct nlattr **attrs,
8848                          bool is_sched_scan)
8849 {
8850         u8 *mac_addr, *mac_addr_mask;
8851         u32 *flags;
8852         enum nl80211_feature_flags randomness_flag;
8853
8854         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8855                 return 0;
8856
8857         if (is_sched_scan) {
8858                 struct cfg80211_sched_scan_request *req = request;
8859
8860                 randomness_flag = wdev ?
8861                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8862                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8863                 flags = &req->flags;
8864                 mac_addr = req->mac_addr;
8865                 mac_addr_mask = req->mac_addr_mask;
8866         } else {
8867                 struct cfg80211_scan_request *req = request;
8868
8869                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8870                 flags = &req->flags;
8871                 mac_addr = req->mac_addr;
8872                 mac_addr_mask = req->mac_addr_mask;
8873         }
8874
8875         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8876
8877         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8878              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8879             !nl80211_check_scan_feat(wiphy, *flags,
8880                                      NL80211_SCAN_FLAG_LOW_SPAN,
8881                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8882             !nl80211_check_scan_feat(wiphy, *flags,
8883                                      NL80211_SCAN_FLAG_LOW_POWER,
8884                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8885             !nl80211_check_scan_feat(wiphy, *flags,
8886                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8887                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8888             !nl80211_check_scan_feat(wiphy, *flags,
8889                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8890                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8891             !nl80211_check_scan_feat(wiphy, *flags,
8892                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8893                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8894             !nl80211_check_scan_feat(wiphy, *flags,
8895                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8896                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8897             !nl80211_check_scan_feat(wiphy, *flags,
8898                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8899                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8900             !nl80211_check_scan_feat(wiphy, *flags,
8901                                      NL80211_SCAN_FLAG_RANDOM_SN,
8902                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8903             !nl80211_check_scan_feat(wiphy, *flags,
8904                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8905                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8906                 return -EOPNOTSUPP;
8907
8908         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8909                 int err;
8910
8911                 if (!(wiphy->features & randomness_flag) ||
8912                     (wdev && wdev->connected))
8913                         return -EOPNOTSUPP;
8914
8915                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8916                 if (err)
8917                         return err;
8918         }
8919
8920         return 0;
8921 }
8922
8923 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8924 {
8925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8926         struct wireless_dev *wdev = info->user_ptr[1];
8927         struct cfg80211_scan_request *request;
8928         struct nlattr *scan_freqs = NULL;
8929         bool scan_freqs_khz = false;
8930         struct nlattr *attr;
8931         struct wiphy *wiphy;
8932         int err, tmp, n_ssids = 0, n_channels, i;
8933         size_t ie_len;
8934
8935         wiphy = &rdev->wiphy;
8936
8937         if (wdev->iftype == NL80211_IFTYPE_NAN)
8938                 return -EOPNOTSUPP;
8939
8940         if (!rdev->ops->scan)
8941                 return -EOPNOTSUPP;
8942
8943         if (rdev->scan_req || rdev->scan_msg)
8944                 return -EBUSY;
8945
8946         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8947                 if (!wiphy_ext_feature_isset(wiphy,
8948                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8949                         return -EOPNOTSUPP;
8950                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8951                 scan_freqs_khz = true;
8952         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8953                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8954
8955         if (scan_freqs) {
8956                 n_channels = validate_scan_freqs(scan_freqs);
8957                 if (!n_channels)
8958                         return -EINVAL;
8959         } else {
8960                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8961         }
8962
8963         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8964                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8965                         n_ssids++;
8966
8967         if (n_ssids > wiphy->max_scan_ssids)
8968                 return -EINVAL;
8969
8970         if (info->attrs[NL80211_ATTR_IE])
8971                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8972         else
8973                 ie_len = 0;
8974
8975         if (ie_len > wiphy->max_scan_ie_len)
8976                 return -EINVAL;
8977
8978         request = kzalloc(sizeof(*request)
8979                         + sizeof(*request->ssids) * n_ssids
8980                         + sizeof(*request->channels) * n_channels
8981                         + ie_len, GFP_KERNEL);
8982         if (!request)
8983                 return -ENOMEM;
8984
8985         if (n_ssids)
8986                 request->ssids = (void *)&request->channels[n_channels];
8987         request->n_ssids = n_ssids;
8988         if (ie_len) {
8989                 if (n_ssids)
8990                         request->ie = (void *)(request->ssids + n_ssids);
8991                 else
8992                         request->ie = (void *)(request->channels + n_channels);
8993         }
8994
8995         i = 0;
8996         if (scan_freqs) {
8997                 /* user specified, bail out if channel not found */
8998                 nla_for_each_nested(attr, scan_freqs, tmp) {
8999                         struct ieee80211_channel *chan;
9000                         int freq = nla_get_u32(attr);
9001
9002                         if (!scan_freqs_khz)
9003                                 freq = MHZ_TO_KHZ(freq);
9004
9005                         chan = ieee80211_get_channel_khz(wiphy, freq);
9006                         if (!chan) {
9007                                 err = -EINVAL;
9008                                 goto out_free;
9009                         }
9010
9011                         /* ignore disabled channels */
9012                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9013                                 continue;
9014
9015                         request->channels[i] = chan;
9016                         i++;
9017                 }
9018         } else {
9019                 enum nl80211_band band;
9020
9021                 /* all channels */
9022                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9023                         int j;
9024
9025                         if (!wiphy->bands[band])
9026                                 continue;
9027                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9028                                 struct ieee80211_channel *chan;
9029
9030                                 chan = &wiphy->bands[band]->channels[j];
9031
9032                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9033                                         continue;
9034
9035                                 request->channels[i] = chan;
9036                                 i++;
9037                         }
9038                 }
9039         }
9040
9041         if (!i) {
9042                 err = -EINVAL;
9043                 goto out_free;
9044         }
9045
9046         request->n_channels = i;
9047
9048         wdev_lock(wdev);
9049         for (i = 0; i < request->n_channels; i++) {
9050                 struct ieee80211_channel *chan = request->channels[i];
9051
9052                 /* if we can go off-channel to the target channel we're good */
9053                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9054                         continue;
9055
9056                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9057                         wdev_unlock(wdev);
9058                         err = -EBUSY;
9059                         goto out_free;
9060                 }
9061         }
9062         wdev_unlock(wdev);
9063
9064         i = 0;
9065         if (n_ssids) {
9066                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9067                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9068                                 err = -EINVAL;
9069                                 goto out_free;
9070                         }
9071                         request->ssids[i].ssid_len = nla_len(attr);
9072                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9073                         i++;
9074                 }
9075         }
9076
9077         if (info->attrs[NL80211_ATTR_IE]) {
9078                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9079                 memcpy((void *)request->ie,
9080                        nla_data(info->attrs[NL80211_ATTR_IE]),
9081                        request->ie_len);
9082         }
9083
9084         for (i = 0; i < NUM_NL80211_BANDS; i++)
9085                 if (wiphy->bands[i])
9086                         request->rates[i] =
9087                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9088
9089         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9090                 nla_for_each_nested(attr,
9091                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9092                                     tmp) {
9093                         enum nl80211_band band = nla_type(attr);
9094
9095                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9096                                 err = -EINVAL;
9097                                 goto out_free;
9098                         }
9099
9100                         if (!wiphy->bands[band])
9101                                 continue;
9102
9103                         err = ieee80211_get_ratemask(wiphy->bands[band],
9104                                                      nla_data(attr),
9105                                                      nla_len(attr),
9106                                                      &request->rates[band]);
9107                         if (err)
9108                                 goto out_free;
9109                 }
9110         }
9111
9112         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9113                 request->duration =
9114                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9115                 request->duration_mandatory =
9116                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9117         }
9118
9119         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9120                                        false);
9121         if (err)
9122                 goto out_free;
9123
9124         request->no_cck =
9125                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9126
9127         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9128          * BSSID to scan for. This was problematic because that same attribute
9129          * was already used for another purpose (local random MAC address). The
9130          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9131          * compatibility with older userspace components, also use the
9132          * NL80211_ATTR_MAC value here if it can be determined to be used for
9133          * the specific BSSID use case instead of the random MAC address
9134          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9135          */
9136         if (info->attrs[NL80211_ATTR_BSSID])
9137                 memcpy(request->bssid,
9138                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9139         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9140                  info->attrs[NL80211_ATTR_MAC])
9141                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9142                        ETH_ALEN);
9143         else
9144                 eth_broadcast_addr(request->bssid);
9145
9146         request->wdev = wdev;
9147         request->wiphy = &rdev->wiphy;
9148         request->scan_start = jiffies;
9149
9150         rdev->scan_req = request;
9151         err = cfg80211_scan(rdev);
9152
9153         if (err)
9154                 goto out_free;
9155
9156         nl80211_send_scan_start(rdev, wdev);
9157         dev_hold(wdev->netdev);
9158
9159         return 0;
9160
9161  out_free:
9162         rdev->scan_req = NULL;
9163         kfree(request);
9164
9165         return err;
9166 }
9167
9168 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9169 {
9170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9171         struct wireless_dev *wdev = info->user_ptr[1];
9172
9173         if (!rdev->ops->abort_scan)
9174                 return -EOPNOTSUPP;
9175
9176         if (rdev->scan_msg)
9177                 return 0;
9178
9179         if (!rdev->scan_req)
9180                 return -ENOENT;
9181
9182         rdev_abort_scan(rdev, wdev);
9183         return 0;
9184 }
9185
9186 static int
9187 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9188                                struct cfg80211_sched_scan_request *request,
9189                                struct nlattr **attrs)
9190 {
9191         int tmp, err, i = 0;
9192         struct nlattr *attr;
9193
9194         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9195                 u32 interval;
9196
9197                 /*
9198                  * If scan plans are not specified,
9199                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9200                  * case one scan plan will be set with the specified scan
9201                  * interval and infinite number of iterations.
9202                  */
9203                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9204                 if (!interval)
9205                         return -EINVAL;
9206
9207                 request->scan_plans[0].interval =
9208                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9209                 if (!request->scan_plans[0].interval)
9210                         return -EINVAL;
9211
9212                 if (request->scan_plans[0].interval >
9213                     wiphy->max_sched_scan_plan_interval)
9214                         request->scan_plans[0].interval =
9215                                 wiphy->max_sched_scan_plan_interval;
9216
9217                 return 0;
9218         }
9219
9220         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9221                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9222
9223                 if (WARN_ON(i >= n_plans))
9224                         return -EINVAL;
9225
9226                 err = nla_parse_nested_deprecated(plan,
9227                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9228                                                   attr, nl80211_plan_policy,
9229                                                   NULL);
9230                 if (err)
9231                         return err;
9232
9233                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9234                         return -EINVAL;
9235
9236                 request->scan_plans[i].interval =
9237                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9238                 if (!request->scan_plans[i].interval ||
9239                     request->scan_plans[i].interval >
9240                     wiphy->max_sched_scan_plan_interval)
9241                         return -EINVAL;
9242
9243                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9244                         request->scan_plans[i].iterations =
9245                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9246                         if (!request->scan_plans[i].iterations ||
9247                             (request->scan_plans[i].iterations >
9248                              wiphy->max_sched_scan_plan_iterations))
9249                                 return -EINVAL;
9250                 } else if (i < n_plans - 1) {
9251                         /*
9252                          * All scan plans but the last one must specify
9253                          * a finite number of iterations
9254                          */
9255                         return -EINVAL;
9256                 }
9257
9258                 i++;
9259         }
9260
9261         /*
9262          * The last scan plan must not specify the number of
9263          * iterations, it is supposed to run infinitely
9264          */
9265         if (request->scan_plans[n_plans - 1].iterations)
9266                 return  -EINVAL;
9267
9268         return 0;
9269 }
9270
9271 static int
9272 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9273                                        struct cfg80211_match_set *match_sets,
9274                                        struct nlattr *tb_band_rssi,
9275                                        s32 rssi_thold)
9276 {
9277         struct nlattr *attr;
9278         int i, tmp, ret = 0;
9279
9280         if (!wiphy_ext_feature_isset(wiphy,
9281                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9282                 if (tb_band_rssi)
9283                         ret = -EOPNOTSUPP;
9284                 else
9285                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9286                                 match_sets->per_band_rssi_thold[i] =
9287                                         NL80211_SCAN_RSSI_THOLD_OFF;
9288                 return ret;
9289         }
9290
9291         for (i = 0; i < NUM_NL80211_BANDS; i++)
9292                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9293
9294         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9295                 enum nl80211_band band = nla_type(attr);
9296
9297                 if (band < 0 || band >= NUM_NL80211_BANDS)
9298                         return -EINVAL;
9299
9300                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9301         }
9302
9303         return 0;
9304 }
9305
9306 static struct cfg80211_sched_scan_request *
9307 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9308                          struct nlattr **attrs, int max_match_sets)
9309 {
9310         struct cfg80211_sched_scan_request *request;
9311         struct nlattr *attr;
9312         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9313         enum nl80211_band band;
9314         size_t ie_len;
9315         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9316         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9317
9318         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9319                 n_channels = validate_scan_freqs(
9320                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9321                 if (!n_channels)
9322                         return ERR_PTR(-EINVAL);
9323         } else {
9324                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9325         }
9326
9327         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9328                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9329                                     tmp)
9330                         n_ssids++;
9331
9332         if (n_ssids > wiphy->max_sched_scan_ssids)
9333                 return ERR_PTR(-EINVAL);
9334
9335         /*
9336          * First, count the number of 'real' matchsets. Due to an issue with
9337          * the old implementation, matchsets containing only the RSSI attribute
9338          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9339          * RSSI for all matchsets, rather than their own matchset for reporting
9340          * all APs with a strong RSSI. This is needed to be compatible with
9341          * older userspace that treated a matchset with only the RSSI as the
9342          * global RSSI for all other matchsets - if there are other matchsets.
9343          */
9344         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9345                 nla_for_each_nested(attr,
9346                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9347                                     tmp) {
9348                         struct nlattr *rssi;
9349
9350                         err = nla_parse_nested_deprecated(tb,
9351                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9352                                                           attr,
9353                                                           nl80211_match_policy,
9354                                                           NULL);
9355                         if (err)
9356                                 return ERR_PTR(err);
9357
9358                         /* SSID and BSSID are mutually exclusive */
9359                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9360                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9361                                 return ERR_PTR(-EINVAL);
9362
9363                         /* add other standalone attributes here */
9364                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9365                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9366                                 n_match_sets++;
9367                                 continue;
9368                         }
9369                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9370                         if (rssi)
9371                                 default_match_rssi = nla_get_s32(rssi);
9372                 }
9373         }
9374
9375         /* However, if there's no other matchset, add the RSSI one */
9376         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9377                 n_match_sets = 1;
9378
9379         if (n_match_sets > max_match_sets)
9380                 return ERR_PTR(-EINVAL);
9381
9382         if (attrs[NL80211_ATTR_IE])
9383                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9384         else
9385                 ie_len = 0;
9386
9387         if (ie_len > wiphy->max_sched_scan_ie_len)
9388                 return ERR_PTR(-EINVAL);
9389
9390         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9391                 /*
9392                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9393                  * each scan plan already specifies its own interval
9394                  */
9395                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9396                         return ERR_PTR(-EINVAL);
9397
9398                 nla_for_each_nested(attr,
9399                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9400                         n_plans++;
9401         } else {
9402                 /*
9403                  * The scan interval attribute is kept for backward
9404                  * compatibility. If no scan plans are specified and sched scan
9405                  * interval is specified, one scan plan will be set with this
9406                  * scan interval and infinite number of iterations.
9407                  */
9408                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9409                         return ERR_PTR(-EINVAL);
9410
9411                 n_plans = 1;
9412         }
9413
9414         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9415                 return ERR_PTR(-EINVAL);
9416
9417         if (!wiphy_ext_feature_isset(
9418                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9419             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9420              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9421                 return ERR_PTR(-EINVAL);
9422
9423         request = kzalloc(sizeof(*request)
9424                         + sizeof(*request->ssids) * n_ssids
9425                         + sizeof(*request->match_sets) * n_match_sets
9426                         + sizeof(*request->scan_plans) * n_plans
9427                         + sizeof(*request->channels) * n_channels
9428                         + ie_len, GFP_KERNEL);
9429         if (!request)
9430                 return ERR_PTR(-ENOMEM);
9431
9432         if (n_ssids)
9433                 request->ssids = (void *)&request->channels[n_channels];
9434         request->n_ssids = n_ssids;
9435         if (ie_len) {
9436                 if (n_ssids)
9437                         request->ie = (void *)(request->ssids + n_ssids);
9438                 else
9439                         request->ie = (void *)(request->channels + n_channels);
9440         }
9441
9442         if (n_match_sets) {
9443                 if (request->ie)
9444                         request->match_sets = (void *)(request->ie + ie_len);
9445                 else if (n_ssids)
9446                         request->match_sets =
9447                                 (void *)(request->ssids + n_ssids);
9448                 else
9449                         request->match_sets =
9450                                 (void *)(request->channels + n_channels);
9451         }
9452         request->n_match_sets = n_match_sets;
9453
9454         if (n_match_sets)
9455                 request->scan_plans = (void *)(request->match_sets +
9456                                                n_match_sets);
9457         else if (request->ie)
9458                 request->scan_plans = (void *)(request->ie + ie_len);
9459         else if (n_ssids)
9460                 request->scan_plans = (void *)(request->ssids + n_ssids);
9461         else
9462                 request->scan_plans = (void *)(request->channels + n_channels);
9463
9464         request->n_scan_plans = n_plans;
9465
9466         i = 0;
9467         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9468                 /* user specified, bail out if channel not found */
9469                 nla_for_each_nested(attr,
9470                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9471                                     tmp) {
9472                         struct ieee80211_channel *chan;
9473
9474                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9475
9476                         if (!chan) {
9477                                 err = -EINVAL;
9478                                 goto out_free;
9479                         }
9480
9481                         /* ignore disabled channels */
9482                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9483                                 continue;
9484
9485                         request->channels[i] = chan;
9486                         i++;
9487                 }
9488         } else {
9489                 /* all channels */
9490                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9491                         int j;
9492
9493                         if (!wiphy->bands[band])
9494                                 continue;
9495                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9496                                 struct ieee80211_channel *chan;
9497
9498                                 chan = &wiphy->bands[band]->channels[j];
9499
9500                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9501                                         continue;
9502
9503                                 request->channels[i] = chan;
9504                                 i++;
9505                         }
9506                 }
9507         }
9508
9509         if (!i) {
9510                 err = -EINVAL;
9511                 goto out_free;
9512         }
9513
9514         request->n_channels = i;
9515
9516         i = 0;
9517         if (n_ssids) {
9518                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9519                                     tmp) {
9520                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9521                                 err = -EINVAL;
9522                                 goto out_free;
9523                         }
9524                         request->ssids[i].ssid_len = nla_len(attr);
9525                         memcpy(request->ssids[i].ssid, nla_data(attr),
9526                                nla_len(attr));
9527                         i++;
9528                 }
9529         }
9530
9531         i = 0;
9532         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9533                 nla_for_each_nested(attr,
9534                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9535                                     tmp) {
9536                         struct nlattr *ssid, *bssid, *rssi;
9537
9538                         err = nla_parse_nested_deprecated(tb,
9539                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9540                                                           attr,
9541                                                           nl80211_match_policy,
9542                                                           NULL);
9543                         if (err)
9544                                 goto out_free;
9545                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9546                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9547
9548                         if (!ssid && !bssid) {
9549                                 i++;
9550                                 continue;
9551                         }
9552
9553                         if (WARN_ON(i >= n_match_sets)) {
9554                                 /* this indicates a programming error,
9555                                  * the loop above should have verified
9556                                  * things properly
9557                                  */
9558                                 err = -EINVAL;
9559                                 goto out_free;
9560                         }
9561
9562                         if (ssid) {
9563                                 memcpy(request->match_sets[i].ssid.ssid,
9564                                        nla_data(ssid), nla_len(ssid));
9565                                 request->match_sets[i].ssid.ssid_len =
9566                                         nla_len(ssid);
9567                         }
9568                         if (bssid)
9569                                 memcpy(request->match_sets[i].bssid,
9570                                        nla_data(bssid), ETH_ALEN);
9571
9572                         /* special attribute - old implementation w/a */
9573                         request->match_sets[i].rssi_thold = default_match_rssi;
9574                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9575                         if (rssi)
9576                                 request->match_sets[i].rssi_thold =
9577                                         nla_get_s32(rssi);
9578
9579                         /* Parse per band RSSI attribute */
9580                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9581                                 &request->match_sets[i],
9582                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9583                                 request->match_sets[i].rssi_thold);
9584                         if (err)
9585                                 goto out_free;
9586
9587                         i++;
9588                 }
9589
9590                 /* there was no other matchset, so the RSSI one is alone */
9591                 if (i == 0 && n_match_sets)
9592                         request->match_sets[0].rssi_thold = default_match_rssi;
9593
9594                 request->min_rssi_thold = INT_MAX;
9595                 for (i = 0; i < n_match_sets; i++)
9596                         request->min_rssi_thold =
9597                                 min(request->match_sets[i].rssi_thold,
9598                                     request->min_rssi_thold);
9599         } else {
9600                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9601         }
9602
9603         if (ie_len) {
9604                 request->ie_len = ie_len;
9605                 memcpy((void *)request->ie,
9606                        nla_data(attrs[NL80211_ATTR_IE]),
9607                        request->ie_len);
9608         }
9609
9610         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9611         if (err)
9612                 goto out_free;
9613
9614         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9615                 request->delay =
9616                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9617
9618         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9619                 request->relative_rssi = nla_get_s8(
9620                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9621                 request->relative_rssi_set = true;
9622         }
9623
9624         if (request->relative_rssi_set &&
9625             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9626                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9627
9628                 rssi_adjust = nla_data(
9629                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9630                 request->rssi_adjust.band = rssi_adjust->band;
9631                 request->rssi_adjust.delta = rssi_adjust->delta;
9632                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9633                         err = -EINVAL;
9634                         goto out_free;
9635                 }
9636         }
9637
9638         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9639         if (err)
9640                 goto out_free;
9641
9642         request->scan_start = jiffies;
9643
9644         return request;
9645
9646 out_free:
9647         kfree(request);
9648         return ERR_PTR(err);
9649 }
9650
9651 static int nl80211_start_sched_scan(struct sk_buff *skb,
9652                                     struct genl_info *info)
9653 {
9654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9655         struct net_device *dev = info->user_ptr[1];
9656         struct wireless_dev *wdev = dev->ieee80211_ptr;
9657         struct cfg80211_sched_scan_request *sched_scan_req;
9658         bool want_multi;
9659         int err;
9660
9661         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9662                 return -EOPNOTSUPP;
9663
9664         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9665         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9666         if (err)
9667                 return err;
9668
9669         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9670                                                   info->attrs,
9671                                                   rdev->wiphy.max_match_sets);
9672
9673         err = PTR_ERR_OR_ZERO(sched_scan_req);
9674         if (err)
9675                 goto out_err;
9676
9677         /* leave request id zero for legacy request
9678          * or if driver does not support multi-scheduled scan
9679          */
9680         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9681                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9682
9683         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9684         if (err)
9685                 goto out_free;
9686
9687         sched_scan_req->dev = dev;
9688         sched_scan_req->wiphy = &rdev->wiphy;
9689
9690         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9691                 sched_scan_req->owner_nlportid = info->snd_portid;
9692
9693         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9694
9695         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9696         return 0;
9697
9698 out_free:
9699         kfree(sched_scan_req);
9700 out_err:
9701         return err;
9702 }
9703
9704 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9705                                    struct genl_info *info)
9706 {
9707         struct cfg80211_sched_scan_request *req;
9708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9709         u64 cookie;
9710
9711         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9712                 return -EOPNOTSUPP;
9713
9714         if (info->attrs[NL80211_ATTR_COOKIE]) {
9715                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9716                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9717         }
9718
9719         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9720                                      struct cfg80211_sched_scan_request,
9721                                      list);
9722         if (!req || req->reqid ||
9723             (req->owner_nlportid &&
9724              req->owner_nlportid != info->snd_portid))
9725                 return -ENOENT;
9726
9727         return cfg80211_stop_sched_scan_req(rdev, req, false);
9728 }
9729
9730 static int nl80211_start_radar_detection(struct sk_buff *skb,
9731                                          struct genl_info *info)
9732 {
9733         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9734         struct net_device *dev = info->user_ptr[1];
9735         struct wireless_dev *wdev = dev->ieee80211_ptr;
9736         struct wiphy *wiphy = wdev->wiphy;
9737         struct cfg80211_chan_def chandef;
9738         enum nl80211_dfs_regions dfs_region;
9739         unsigned int cac_time_ms;
9740         int err = -EINVAL;
9741
9742         flush_delayed_work(&rdev->dfs_update_channels_wk);
9743
9744         wiphy_lock(wiphy);
9745
9746         dfs_region = reg_get_dfs_region(wiphy);
9747         if (dfs_region == NL80211_DFS_UNSET)
9748                 goto unlock;
9749
9750         err = nl80211_parse_chandef(rdev, info, &chandef);
9751         if (err)
9752                 goto unlock;
9753
9754         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9755         if (err < 0)
9756                 goto unlock;
9757
9758         if (err == 0) {
9759                 err = -EINVAL;
9760                 goto unlock;
9761         }
9762
9763         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9764                 err = -EINVAL;
9765                 goto unlock;
9766         }
9767
9768         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9769                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9770                                                                 &chandef);
9771                 goto unlock;
9772         }
9773
9774         if (netif_carrier_ok(dev)) {
9775                 err = -EBUSY;
9776                 goto unlock;
9777         }
9778
9779         if (wdev->cac_started) {
9780                 err = -EBUSY;
9781                 goto unlock;
9782         }
9783
9784         /* CAC start is offloaded to HW and can't be started manually */
9785         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9786                 err = -EOPNOTSUPP;
9787                 goto unlock;
9788         }
9789
9790         if (!rdev->ops->start_radar_detection) {
9791                 err = -EOPNOTSUPP;
9792                 goto unlock;
9793         }
9794
9795         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9796         if (WARN_ON(!cac_time_ms))
9797                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9798
9799         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9800         if (!err) {
9801                 wdev->links[0].ap.chandef = chandef;
9802                 wdev->cac_started = true;
9803                 wdev->cac_start_time = jiffies;
9804                 wdev->cac_time_ms = cac_time_ms;
9805         }
9806 unlock:
9807         wiphy_unlock(wiphy);
9808
9809         return err;
9810 }
9811
9812 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9813                                           struct genl_info *info)
9814 {
9815         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9816         struct net_device *dev = info->user_ptr[1];
9817         struct wireless_dev *wdev = dev->ieee80211_ptr;
9818         struct wiphy *wiphy = wdev->wiphy;
9819         struct cfg80211_chan_def chandef;
9820         enum nl80211_dfs_regions dfs_region;
9821         int err;
9822
9823         dfs_region = reg_get_dfs_region(wiphy);
9824         if (dfs_region == NL80211_DFS_UNSET) {
9825                 GENL_SET_ERR_MSG(info,
9826                                  "DFS Region is not set. Unexpected Radar indication");
9827                 return -EINVAL;
9828         }
9829
9830         err = nl80211_parse_chandef(rdev, info, &chandef);
9831         if (err) {
9832                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9833                 return err;
9834         }
9835
9836         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9837         if (err < 0) {
9838                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9839                 return err;
9840         }
9841
9842         if (err == 0) {
9843                 GENL_SET_ERR_MSG(info,
9844                                  "Unexpected Radar indication for chandef/iftype");
9845                 return -EINVAL;
9846         }
9847
9848         /* Do not process this notification if radar is already detected
9849          * by kernel on this channel, and return success.
9850          */
9851         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9852                 return 0;
9853
9854         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9855
9856         cfg80211_sched_dfs_chan_update(rdev);
9857
9858         rdev->radar_chandef = chandef;
9859
9860         /* Propagate this notification to other radios as well */
9861         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9862
9863         return 0;
9864 }
9865
9866 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9867 {
9868         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9869         unsigned int link_id = nl80211_link_id(info->attrs);
9870         struct net_device *dev = info->user_ptr[1];
9871         struct wireless_dev *wdev = dev->ieee80211_ptr;
9872         struct cfg80211_csa_settings params;
9873         struct nlattr **csa_attrs = NULL;
9874         int err;
9875         bool need_new_beacon = false;
9876         bool need_handle_dfs_flag = true;
9877         int len, i;
9878         u32 cs_count;
9879
9880         if (!rdev->ops->channel_switch ||
9881             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9882                 return -EOPNOTSUPP;
9883
9884         switch (dev->ieee80211_ptr->iftype) {
9885         case NL80211_IFTYPE_AP:
9886         case NL80211_IFTYPE_P2P_GO:
9887                 need_new_beacon = true;
9888                 /* For all modes except AP the handle_dfs flag needs to be
9889                  * supplied to tell the kernel that userspace will handle radar
9890                  * events when they happen. Otherwise a switch to a channel
9891                  * requiring DFS will be rejected.
9892                  */
9893                 need_handle_dfs_flag = false;
9894
9895                 /* useless if AP is not running */
9896                 if (!wdev->links[link_id].ap.beacon_interval)
9897                         return -ENOTCONN;
9898                 break;
9899         case NL80211_IFTYPE_ADHOC:
9900                 if (!wdev->u.ibss.ssid_len)
9901                         return -ENOTCONN;
9902                 break;
9903         case NL80211_IFTYPE_MESH_POINT:
9904                 if (!wdev->u.mesh.id_len)
9905                         return -ENOTCONN;
9906                 break;
9907         default:
9908                 return -EOPNOTSUPP;
9909         }
9910
9911         memset(&params, 0, sizeof(params));
9912         params.beacon_csa.ftm_responder = -1;
9913
9914         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9915             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9916                 return -EINVAL;
9917
9918         /* only important for AP, IBSS and mesh create IEs internally */
9919         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9920                 return -EINVAL;
9921
9922         /* Even though the attribute is u32, the specification says
9923          * u8, so let's make sure we don't overflow.
9924          */
9925         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9926         if (cs_count > 255)
9927                 return -EINVAL;
9928
9929         params.count = cs_count;
9930
9931         if (!need_new_beacon)
9932                 goto skip_beacons;
9933
9934         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9935         if (err)
9936                 goto free;
9937
9938         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9939                             GFP_KERNEL);
9940         if (!csa_attrs) {
9941                 err = -ENOMEM;
9942                 goto free;
9943         }
9944
9945         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9946                                           info->attrs[NL80211_ATTR_CSA_IES],
9947                                           nl80211_policy, info->extack);
9948         if (err)
9949                 goto free;
9950
9951         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9952         if (err)
9953                 goto free;
9954
9955         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9956                 err = -EINVAL;
9957                 goto free;
9958         }
9959
9960         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9961         if (!len || (len % sizeof(u16))) {
9962                 err = -EINVAL;
9963                 goto free;
9964         }
9965
9966         params.n_counter_offsets_beacon = len / sizeof(u16);
9967         if (rdev->wiphy.max_num_csa_counters &&
9968             (params.n_counter_offsets_beacon >
9969              rdev->wiphy.max_num_csa_counters)) {
9970                 err = -EINVAL;
9971                 goto free;
9972         }
9973
9974         params.counter_offsets_beacon =
9975                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9976
9977         /* sanity checks - counters should fit and be the same */
9978         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9979                 u16 offset = params.counter_offsets_beacon[i];
9980
9981                 if (offset >= params.beacon_csa.tail_len) {
9982                         err = -EINVAL;
9983                         goto free;
9984                 }
9985
9986                 if (params.beacon_csa.tail[offset] != params.count) {
9987                         err = -EINVAL;
9988                         goto free;
9989                 }
9990         }
9991
9992         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9993                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9994                 if (!len || (len % sizeof(u16))) {
9995                         err = -EINVAL;
9996                         goto free;
9997                 }
9998
9999                 params.n_counter_offsets_presp = len / sizeof(u16);
10000                 if (rdev->wiphy.max_num_csa_counters &&
10001                     (params.n_counter_offsets_presp >
10002                      rdev->wiphy.max_num_csa_counters)) {
10003                         err = -EINVAL;
10004                         goto free;
10005                 }
10006
10007                 params.counter_offsets_presp =
10008                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10009
10010                 /* sanity checks - counters should fit and be the same */
10011                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10012                         u16 offset = params.counter_offsets_presp[i];
10013
10014                         if (offset >= params.beacon_csa.probe_resp_len) {
10015                                 err = -EINVAL;
10016                                 goto free;
10017                         }
10018
10019                         if (params.beacon_csa.probe_resp[offset] !=
10020                             params.count) {
10021                                 err = -EINVAL;
10022                                 goto free;
10023                         }
10024                 }
10025         }
10026
10027 skip_beacons:
10028         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10029         if (err)
10030                 goto free;
10031
10032         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10033                                            wdev->iftype)) {
10034                 err = -EINVAL;
10035                 goto free;
10036         }
10037
10038         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10039                                             &params.chandef,
10040                                             wdev->iftype);
10041         if (err < 0)
10042                 goto free;
10043
10044         if (err > 0) {
10045                 params.radar_required = true;
10046                 if (need_handle_dfs_flag &&
10047                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10048                         err = -EINVAL;
10049                         goto free;
10050                 }
10051         }
10052
10053         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10054                 params.block_tx = true;
10055
10056         wdev_lock(wdev);
10057         err = rdev_channel_switch(rdev, dev, &params);
10058         wdev_unlock(wdev);
10059
10060 free:
10061         kfree(params.beacon_after.mbssid_ies);
10062         kfree(params.beacon_csa.mbssid_ies);
10063         kfree(csa_attrs);
10064         return err;
10065 }
10066
10067 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10068                             u32 seq, int flags,
10069                             struct cfg80211_registered_device *rdev,
10070                             struct wireless_dev *wdev,
10071                             struct cfg80211_internal_bss *intbss)
10072 {
10073         struct cfg80211_bss *res = &intbss->pub;
10074         const struct cfg80211_bss_ies *ies;
10075         unsigned int link_id;
10076         void *hdr;
10077         struct nlattr *bss;
10078
10079         ASSERT_WDEV_LOCK(wdev);
10080
10081         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10082                              NL80211_CMD_NEW_SCAN_RESULTS);
10083         if (!hdr)
10084                 return -1;
10085
10086         genl_dump_check_consistent(cb, hdr);
10087
10088         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10089                 goto nla_put_failure;
10090         if (wdev->netdev &&
10091             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10092                 goto nla_put_failure;
10093         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10094                               NL80211_ATTR_PAD))
10095                 goto nla_put_failure;
10096
10097         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10098         if (!bss)
10099                 goto nla_put_failure;
10100         if ((!is_zero_ether_addr(res->bssid) &&
10101              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10102                 goto nla_put_failure;
10103
10104         rcu_read_lock();
10105         /* indicate whether we have probe response data or not */
10106         if (rcu_access_pointer(res->proberesp_ies) &&
10107             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10108                 goto fail_unlock_rcu;
10109
10110         /* this pointer prefers to be pointed to probe response data
10111          * but is always valid
10112          */
10113         ies = rcu_dereference(res->ies);
10114         if (ies) {
10115                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10116                                       NL80211_BSS_PAD))
10117                         goto fail_unlock_rcu;
10118                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10119                                         ies->len, ies->data))
10120                         goto fail_unlock_rcu;
10121         }
10122
10123         /* and this pointer is always (unless driver didn't know) beacon data */
10124         ies = rcu_dereference(res->beacon_ies);
10125         if (ies && ies->from_beacon) {
10126                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10127                                       NL80211_BSS_PAD))
10128                         goto fail_unlock_rcu;
10129                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10130                                         ies->len, ies->data))
10131                         goto fail_unlock_rcu;
10132         }
10133         rcu_read_unlock();
10134
10135         if (res->beacon_interval &&
10136             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10137                 goto nla_put_failure;
10138         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10139             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10140             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10141                         res->channel->freq_offset) ||
10142             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10143             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10144                         jiffies_to_msecs(jiffies - intbss->ts)))
10145                 goto nla_put_failure;
10146
10147         if (intbss->parent_tsf &&
10148             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10149                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10150              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10151                      intbss->parent_bssid)))
10152                 goto nla_put_failure;
10153
10154         if (intbss->ts_boottime &&
10155             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10156                               intbss->ts_boottime, NL80211_BSS_PAD))
10157                 goto nla_put_failure;
10158
10159         if (!nl80211_put_signal(msg, intbss->pub.chains,
10160                                 intbss->pub.chain_signal,
10161                                 NL80211_BSS_CHAIN_SIGNAL))
10162                 goto nla_put_failure;
10163
10164         switch (rdev->wiphy.signal_type) {
10165         case CFG80211_SIGNAL_TYPE_MBM:
10166                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10167                         goto nla_put_failure;
10168                 break;
10169         case CFG80211_SIGNAL_TYPE_UNSPEC:
10170                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10171                         goto nla_put_failure;
10172                 break;
10173         default:
10174                 break;
10175         }
10176
10177         switch (wdev->iftype) {
10178         case NL80211_IFTYPE_P2P_CLIENT:
10179         case NL80211_IFTYPE_STATION:
10180                 for_each_valid_link(wdev, link_id) {
10181                         if (intbss == wdev->links[link_id].client.current_bss &&
10182                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10183                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10184                              (wdev->valid_links &&
10185                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10186                                           link_id) ||
10187                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10188                                        wdev->u.client.connected_addr)))))
10189                                 goto nla_put_failure;
10190                 }
10191                 break;
10192         case NL80211_IFTYPE_ADHOC:
10193                 if (intbss == wdev->u.ibss.current_bss &&
10194                     nla_put_u32(msg, NL80211_BSS_STATUS,
10195                                 NL80211_BSS_STATUS_IBSS_JOINED))
10196                         goto nla_put_failure;
10197                 break;
10198         default:
10199                 break;
10200         }
10201
10202         nla_nest_end(msg, bss);
10203
10204         genlmsg_end(msg, hdr);
10205         return 0;
10206
10207  fail_unlock_rcu:
10208         rcu_read_unlock();
10209  nla_put_failure:
10210         genlmsg_cancel(msg, hdr);
10211         return -EMSGSIZE;
10212 }
10213
10214 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10215 {
10216         struct cfg80211_registered_device *rdev;
10217         struct cfg80211_internal_bss *scan;
10218         struct wireless_dev *wdev;
10219         int start = cb->args[2], idx = 0;
10220         int err;
10221
10222         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10223         if (err)
10224                 return err;
10225         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10226         __acquire(&rdev->wiphy.mtx);
10227
10228         wdev_lock(wdev);
10229         spin_lock_bh(&rdev->bss_lock);
10230
10231         /*
10232          * dump_scan will be called multiple times to break up the scan results
10233          * into multiple messages.  It is unlikely that any more bss-es will be
10234          * expired after the first call, so only call only call this on the
10235          * first dump_scan invocation.
10236          */
10237         if (start == 0)
10238                 cfg80211_bss_expire(rdev);
10239
10240         cb->seq = rdev->bss_generation;
10241
10242         list_for_each_entry(scan, &rdev->bss_list, list) {
10243                 if (++idx <= start)
10244                         continue;
10245                 if (nl80211_send_bss(skb, cb,
10246                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10247                                 rdev, wdev, scan) < 0) {
10248                         idx--;
10249                         break;
10250                 }
10251         }
10252
10253         spin_unlock_bh(&rdev->bss_lock);
10254         wdev_unlock(wdev);
10255
10256         cb->args[2] = idx;
10257         wiphy_unlock(&rdev->wiphy);
10258
10259         return skb->len;
10260 }
10261
10262 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10263                                int flags, struct net_device *dev,
10264                                bool allow_radio_stats,
10265                                struct survey_info *survey)
10266 {
10267         void *hdr;
10268         struct nlattr *infoattr;
10269
10270         /* skip radio stats if userspace didn't request them */
10271         if (!survey->channel && !allow_radio_stats)
10272                 return 0;
10273
10274         hdr = nl80211hdr_put(msg, portid, seq, flags,
10275                              NL80211_CMD_NEW_SURVEY_RESULTS);
10276         if (!hdr)
10277                 return -ENOMEM;
10278
10279         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10280                 goto nla_put_failure;
10281
10282         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10283         if (!infoattr)
10284                 goto nla_put_failure;
10285
10286         if (survey->channel &&
10287             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10288                         survey->channel->center_freq))
10289                 goto nla_put_failure;
10290
10291         if (survey->channel && survey->channel->freq_offset &&
10292             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10293                         survey->channel->freq_offset))
10294                 goto nla_put_failure;
10295
10296         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10297             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10298                 goto nla_put_failure;
10299         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10300             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10301                 goto nla_put_failure;
10302         if ((survey->filled & SURVEY_INFO_TIME) &&
10303             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10304                         survey->time, NL80211_SURVEY_INFO_PAD))
10305                 goto nla_put_failure;
10306         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10307             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10308                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10309                 goto nla_put_failure;
10310         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10311             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10312                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10313                 goto nla_put_failure;
10314         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10315             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10316                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10317                 goto nla_put_failure;
10318         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10319             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10320                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10321                 goto nla_put_failure;
10322         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10323             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10324                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10325                 goto nla_put_failure;
10326         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10327             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10328                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10329                 goto nla_put_failure;
10330
10331         nla_nest_end(msg, infoattr);
10332
10333         genlmsg_end(msg, hdr);
10334         return 0;
10335
10336  nla_put_failure:
10337         genlmsg_cancel(msg, hdr);
10338         return -EMSGSIZE;
10339 }
10340
10341 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10342 {
10343         struct nlattr **attrbuf;
10344         struct survey_info survey;
10345         struct cfg80211_registered_device *rdev;
10346         struct wireless_dev *wdev;
10347         int survey_idx = cb->args[2];
10348         int res;
10349         bool radio_stats;
10350
10351         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10352         if (!attrbuf)
10353                 return -ENOMEM;
10354
10355         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10356         if (res) {
10357                 kfree(attrbuf);
10358                 return res;
10359         }
10360         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10361         __acquire(&rdev->wiphy.mtx);
10362
10363         /* prepare_wdev_dump parsed the attributes */
10364         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10365
10366         if (!wdev->netdev) {
10367                 res = -EINVAL;
10368                 goto out_err;
10369         }
10370
10371         if (!rdev->ops->dump_survey) {
10372                 res = -EOPNOTSUPP;
10373                 goto out_err;
10374         }
10375
10376         while (1) {
10377                 wdev_lock(wdev);
10378                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10379                 wdev_unlock(wdev);
10380                 if (res == -ENOENT)
10381                         break;
10382                 if (res)
10383                         goto out_err;
10384
10385                 /* don't send disabled channels, but do send non-channel data */
10386                 if (survey.channel &&
10387                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10388                         survey_idx++;
10389                         continue;
10390                 }
10391
10392                 if (nl80211_send_survey(skb,
10393                                 NETLINK_CB(cb->skb).portid,
10394                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10395                                 wdev->netdev, radio_stats, &survey) < 0)
10396                         goto out;
10397                 survey_idx++;
10398         }
10399
10400  out:
10401         cb->args[2] = survey_idx;
10402         res = skb->len;
10403  out_err:
10404         kfree(attrbuf);
10405         wiphy_unlock(&rdev->wiphy);
10406         return res;
10407 }
10408
10409 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10410 {
10411         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10412                                   NL80211_WPA_VERSION_2 |
10413                                   NL80211_WPA_VERSION_3));
10414 }
10415
10416 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10417 {
10418         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10419         struct net_device *dev = info->user_ptr[1];
10420         struct ieee80211_channel *chan;
10421         const u8 *bssid, *ssid;
10422         int err, ssid_len;
10423         enum nl80211_auth_type auth_type;
10424         struct key_parse key;
10425         bool local_state_change;
10426         struct cfg80211_auth_request req = {};
10427         u32 freq;
10428
10429         if (!info->attrs[NL80211_ATTR_MAC])
10430                 return -EINVAL;
10431
10432         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10433                 return -EINVAL;
10434
10435         if (!info->attrs[NL80211_ATTR_SSID])
10436                 return -EINVAL;
10437
10438         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10439                 return -EINVAL;
10440
10441         err = nl80211_parse_key(info, &key);
10442         if (err)
10443                 return err;
10444
10445         if (key.idx >= 0) {
10446                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10447                         return -EINVAL;
10448                 if (!key.p.key || !key.p.key_len)
10449                         return -EINVAL;
10450                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10451                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10452                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10453                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10454                         return -EINVAL;
10455                 if (key.idx > 3)
10456                         return -EINVAL;
10457         } else {
10458                 key.p.key_len = 0;
10459                 key.p.key = NULL;
10460         }
10461
10462         if (key.idx >= 0) {
10463                 int i;
10464                 bool ok = false;
10465
10466                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10467                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10468                                 ok = true;
10469                                 break;
10470                         }
10471                 }
10472                 if (!ok)
10473                         return -EINVAL;
10474         }
10475
10476         if (!rdev->ops->auth)
10477                 return -EOPNOTSUPP;
10478
10479         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10480             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10481                 return -EOPNOTSUPP;
10482
10483         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10484         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10485         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10486                 freq +=
10487                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10488
10489         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10490         if (!chan)
10491                 return -EINVAL;
10492
10493         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10494         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10495
10496         if (info->attrs[NL80211_ATTR_IE]) {
10497                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10498                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10499         }
10500
10501         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10502         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10503                 return -EINVAL;
10504
10505         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10506              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10507              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10508              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10509             !info->attrs[NL80211_ATTR_AUTH_DATA])
10510                 return -EINVAL;
10511
10512         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10513                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10514                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10515                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10516                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10517                         return -EINVAL;
10518                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10519                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10520         }
10521
10522         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10523
10524         /*
10525          * Since we no longer track auth state, ignore
10526          * requests to only change local state.
10527          */
10528         if (local_state_change)
10529                 return 0;
10530
10531         req.auth_type = auth_type;
10532         req.key = key.p.key;
10533         req.key_len = key.p.key_len;
10534         req.key_idx = key.idx;
10535         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10536         if (req.link_id >= 0) {
10537                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10538                         return -EINVAL;
10539                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10540                         return -EINVAL;
10541                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10542         }
10543
10544         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10545                                    IEEE80211_BSS_TYPE_ESS,
10546                                    IEEE80211_PRIVACY_ANY);
10547         if (!req.bss)
10548                 return -ENOENT;
10549
10550         wdev_lock(dev->ieee80211_ptr);
10551         err = cfg80211_mlme_auth(rdev, dev, &req);
10552         wdev_unlock(dev->ieee80211_ptr);
10553
10554         cfg80211_put_bss(&rdev->wiphy, req.bss);
10555
10556         return err;
10557 }
10558
10559 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10560                                      struct genl_info *info)
10561 {
10562         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10563                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10564                 return -EINVAL;
10565         }
10566
10567         if (!rdev->ops->tx_control_port ||
10568             !wiphy_ext_feature_isset(&rdev->wiphy,
10569                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10570                 return -EOPNOTSUPP;
10571
10572         return 0;
10573 }
10574
10575 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10576                                    struct genl_info *info,
10577                                    struct cfg80211_crypto_settings *settings,
10578                                    int cipher_limit)
10579 {
10580         memset(settings, 0, sizeof(*settings));
10581
10582         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10583
10584         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10585                 u16 proto;
10586
10587                 proto = nla_get_u16(
10588                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10589                 settings->control_port_ethertype = cpu_to_be16(proto);
10590                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10591                     proto != ETH_P_PAE)
10592                         return -EINVAL;
10593                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10594                         settings->control_port_no_encrypt = true;
10595         } else
10596                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10597
10598         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10599                 int r = validate_pae_over_nl80211(rdev, info);
10600
10601                 if (r < 0)
10602                         return r;
10603
10604                 settings->control_port_over_nl80211 = true;
10605
10606                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10607                         settings->control_port_no_preauth = true;
10608         }
10609
10610         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10611                 void *data;
10612                 int len, i;
10613
10614                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10615                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10616                 settings->n_ciphers_pairwise = len / sizeof(u32);
10617
10618                 if (len % sizeof(u32))
10619                         return -EINVAL;
10620
10621                 if (settings->n_ciphers_pairwise > cipher_limit)
10622                         return -EINVAL;
10623
10624                 memcpy(settings->ciphers_pairwise, data, len);
10625
10626                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10627                         if (!cfg80211_supported_cipher_suite(
10628                                         &rdev->wiphy,
10629                                         settings->ciphers_pairwise[i]))
10630                                 return -EINVAL;
10631         }
10632
10633         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10634                 settings->cipher_group =
10635                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10636                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10637                                                      settings->cipher_group))
10638                         return -EINVAL;
10639         }
10640
10641         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10642                 settings->wpa_versions =
10643                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10644                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10645                         return -EINVAL;
10646         }
10647
10648         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10649                 void *data;
10650                 int len;
10651
10652                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10653                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10654                 settings->n_akm_suites = len / sizeof(u32);
10655
10656                 if (len % sizeof(u32))
10657                         return -EINVAL;
10658
10659                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10660                         return -EINVAL;
10661
10662                 memcpy(settings->akm_suites, data, len);
10663         }
10664
10665         if (info->attrs[NL80211_ATTR_PMK]) {
10666                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10667                         return -EINVAL;
10668                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10669                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10670                     !wiphy_ext_feature_isset(&rdev->wiphy,
10671                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10672                         return -EINVAL;
10673                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10674         }
10675
10676         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10677                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10678                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10679                     !wiphy_ext_feature_isset(&rdev->wiphy,
10680                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10681                         return -EINVAL;
10682                 settings->sae_pwd =
10683                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10684                 settings->sae_pwd_len =
10685                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10686         }
10687
10688         if (info->attrs[NL80211_ATTR_SAE_PWE])
10689                 settings->sae_pwe =
10690                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10691         else
10692                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10693
10694         return 0;
10695 }
10696
10697 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10698                                               const u8 *ssid, int ssid_len,
10699                                               struct nlattr **attrs,
10700                                               const u8 **bssid_out)
10701 {
10702         struct ieee80211_channel *chan;
10703         struct cfg80211_bss *bss;
10704         const u8 *bssid;
10705         u32 freq;
10706
10707         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10708                 return ERR_PTR(-EINVAL);
10709
10710         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10711
10712         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10713         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10714                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10715
10716         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10717         if (!chan)
10718                 return ERR_PTR(-EINVAL);
10719
10720         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10721                                ssid, ssid_len,
10722                                IEEE80211_BSS_TYPE_ESS,
10723                                IEEE80211_PRIVACY_ANY);
10724         if (!bss)
10725                 return ERR_PTR(-ENOENT);
10726
10727         *bssid_out = bssid;
10728         return bss;
10729 }
10730
10731 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10732 {
10733         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10734         struct net_device *dev = info->user_ptr[1];
10735         struct cfg80211_assoc_request req = {};
10736         struct nlattr **attrs = NULL;
10737         const u8 *bssid, *ssid;
10738         unsigned int link_id;
10739         int err, ssid_len;
10740
10741         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10742             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10743                 return -EPERM;
10744
10745         if (!info->attrs[NL80211_ATTR_SSID])
10746                 return -EINVAL;
10747
10748         if (!rdev->ops->assoc)
10749                 return -EOPNOTSUPP;
10750
10751         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10752             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10753                 return -EOPNOTSUPP;
10754
10755         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10756         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10757
10758         if (info->attrs[NL80211_ATTR_IE]) {
10759                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10760                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10761
10762                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10763                                            req.ie, req.ie_len)) {
10764                         GENL_SET_ERR_MSG(info,
10765                                          "non-inheritance makes no sense");
10766                         return -EINVAL;
10767                 }
10768         }
10769
10770         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10771                 enum nl80211_mfp mfp =
10772                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10773                 if (mfp == NL80211_MFP_REQUIRED)
10774                         req.use_mfp = true;
10775                 else if (mfp != NL80211_MFP_NO)
10776                         return -EINVAL;
10777         }
10778
10779         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10780                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10781
10782         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10783                 req.flags |= ASSOC_REQ_DISABLE_HT;
10784
10785         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10786                 memcpy(&req.ht_capa_mask,
10787                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10788                        sizeof(req.ht_capa_mask));
10789
10790         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10791                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10792                         return -EINVAL;
10793                 memcpy(&req.ht_capa,
10794                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10795                        sizeof(req.ht_capa));
10796         }
10797
10798         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10799                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10800
10801         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10802                 req.flags |= ASSOC_REQ_DISABLE_HE;
10803
10804         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10805                 req.flags |= ASSOC_REQ_DISABLE_EHT;
10806
10807         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10808                 memcpy(&req.vht_capa_mask,
10809                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10810                        sizeof(req.vht_capa_mask));
10811
10812         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10813                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10814                         return -EINVAL;
10815                 memcpy(&req.vht_capa,
10816                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10817                        sizeof(req.vht_capa));
10818         }
10819
10820         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10821                 if (!((rdev->wiphy.features &
10822                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10823                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10824                     !wiphy_ext_feature_isset(&rdev->wiphy,
10825                                              NL80211_EXT_FEATURE_RRM))
10826                         return -EINVAL;
10827                 req.flags |= ASSOC_REQ_USE_RRM;
10828         }
10829
10830         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10831                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10832                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10833                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10834                         return -EINVAL;
10835                 req.fils_nonces =
10836                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10837         }
10838
10839         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10840                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10841                         return -EINVAL;
10842                 memcpy(&req.s1g_capa_mask,
10843                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10844                        sizeof(req.s1g_capa_mask));
10845         }
10846
10847         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10848                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10849                         return -EINVAL;
10850                 memcpy(&req.s1g_capa,
10851                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10852                        sizeof(req.s1g_capa));
10853         }
10854
10855         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10856
10857         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
10858                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
10859                 struct nlattr *link;
10860                 int rem = 0;
10861
10862                 if (req.link_id < 0)
10863                         return -EINVAL;
10864
10865                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10866                         return -EINVAL;
10867
10868                 if (info->attrs[NL80211_ATTR_MAC] ||
10869                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10870                     !info->attrs[NL80211_ATTR_MLD_ADDR])
10871                         return -EINVAL;
10872
10873                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10874
10875                 attrs = kzalloc(attrsize, GFP_KERNEL);
10876                 if (!attrs)
10877                         return -ENOMEM;
10878
10879                 nla_for_each_nested(link,
10880                                     info->attrs[NL80211_ATTR_MLO_LINKS],
10881                                     rem) {
10882                         memset(attrs, 0, attrsize);
10883
10884                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
10885                                          link, NULL, NULL);
10886
10887                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
10888                                 err = -EINVAL;
10889                                 goto free;
10890                         }
10891
10892                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
10893                         /* cannot use the same link ID again */
10894                         if (req.links[link_id].bss) {
10895                                 err = -EINVAL;
10896                                 goto free;
10897                         }
10898                         req.links[link_id].bss =
10899                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
10900                                                   &bssid);
10901                         if (IS_ERR(req.links[link_id].bss)) {
10902                                 err = PTR_ERR(req.links[link_id].bss);
10903                                 req.links[link_id].bss = NULL;
10904                                 goto free;
10905                         }
10906
10907                         if (attrs[NL80211_ATTR_IE]) {
10908                                 req.links[link_id].elems =
10909                                         nla_data(attrs[NL80211_ATTR_IE]);
10910                                 req.links[link_id].elems_len =
10911                                         nla_len(attrs[NL80211_ATTR_IE]);
10912
10913                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
10914                                                        req.links[link_id].elems,
10915                                                        req.links[link_id].elems_len)) {
10916                                         GENL_SET_ERR_MSG(info,
10917                                                          "cannot deal with fragmentation");
10918                                         err = -EINVAL;
10919                                         goto free;
10920                                 }
10921
10922                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10923                                                            req.links[link_id].elems,
10924                                                            req.links[link_id].elems_len)) {
10925                                         GENL_SET_ERR_MSG(info,
10926                                                          "cannot deal with non-inheritance");
10927                                         err = -EINVAL;
10928                                         goto free;
10929                                 }
10930                         }
10931                 }
10932
10933                 if (!req.links[req.link_id].bss) {
10934                         err = -EINVAL;
10935                         goto free;
10936                 }
10937
10938                 if (req.links[req.link_id].elems_len) {
10939                         GENL_SET_ERR_MSG(info,
10940                                          "cannot have per-link elems on assoc link");
10941                         err = -EINVAL;
10942                         goto free;
10943                 }
10944
10945                 kfree(attrs);
10946                 attrs = NULL;
10947         } else {
10948                 if (req.link_id >= 0)
10949                         return -EINVAL;
10950
10951                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
10952                                             &bssid);
10953                 if (IS_ERR(req.bss))
10954                         return PTR_ERR(req.bss);
10955         }
10956
10957         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10958         if (!err) {
10959                 wdev_lock(dev->ieee80211_ptr);
10960
10961                 err = cfg80211_mlme_assoc(rdev, dev, &req);
10962
10963                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10964                         dev->ieee80211_ptr->conn_owner_nlportid =
10965                                 info->snd_portid;
10966                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10967                                bssid, ETH_ALEN);
10968                 }
10969
10970                 wdev_unlock(dev->ieee80211_ptr);
10971         }
10972
10973 free:
10974         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
10975                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
10976         cfg80211_put_bss(&rdev->wiphy, req.bss);
10977         kfree(attrs);
10978
10979         return err;
10980 }
10981
10982 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10983 {
10984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10985         struct net_device *dev = info->user_ptr[1];
10986         const u8 *ie = NULL, *bssid;
10987         int ie_len = 0, err;
10988         u16 reason_code;
10989         bool local_state_change;
10990
10991         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10992             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10993                 return -EPERM;
10994
10995         if (!info->attrs[NL80211_ATTR_MAC])
10996                 return -EINVAL;
10997
10998         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10999                 return -EINVAL;
11000
11001         if (!rdev->ops->deauth)
11002                 return -EOPNOTSUPP;
11003
11004         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11005             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11006                 return -EOPNOTSUPP;
11007
11008         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11009
11010         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11011         if (reason_code == 0) {
11012                 /* Reason Code 0 is reserved */
11013                 return -EINVAL;
11014         }
11015
11016         if (info->attrs[NL80211_ATTR_IE]) {
11017                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11018                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11019         }
11020
11021         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11022
11023         wdev_lock(dev->ieee80211_ptr);
11024         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11025                                    local_state_change);
11026         wdev_unlock(dev->ieee80211_ptr);
11027         return err;
11028 }
11029
11030 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11031 {
11032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11033         struct net_device *dev = info->user_ptr[1];
11034         const u8 *ie = NULL, *bssid;
11035         int ie_len = 0, err;
11036         u16 reason_code;
11037         bool local_state_change;
11038
11039         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11040             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11041                 return -EPERM;
11042
11043         if (!info->attrs[NL80211_ATTR_MAC])
11044                 return -EINVAL;
11045
11046         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11047                 return -EINVAL;
11048
11049         if (!rdev->ops->disassoc)
11050                 return -EOPNOTSUPP;
11051
11052         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11053             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11054                 return -EOPNOTSUPP;
11055
11056         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11057
11058         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11059         if (reason_code == 0) {
11060                 /* Reason Code 0 is reserved */
11061                 return -EINVAL;
11062         }
11063
11064         if (info->attrs[NL80211_ATTR_IE]) {
11065                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11066                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11067         }
11068
11069         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11070
11071         wdev_lock(dev->ieee80211_ptr);
11072         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11073                                      local_state_change);
11074         wdev_unlock(dev->ieee80211_ptr);
11075         return err;
11076 }
11077
11078 static bool
11079 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11080                          int mcast_rate[NUM_NL80211_BANDS],
11081                          int rateval)
11082 {
11083         struct wiphy *wiphy = &rdev->wiphy;
11084         bool found = false;
11085         int band, i;
11086
11087         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11088                 struct ieee80211_supported_band *sband;
11089
11090                 sband = wiphy->bands[band];
11091                 if (!sband)
11092                         continue;
11093
11094                 for (i = 0; i < sband->n_bitrates; i++) {
11095                         if (sband->bitrates[i].bitrate == rateval) {
11096                                 mcast_rate[band] = i + 1;
11097                                 found = true;
11098                                 break;
11099                         }
11100                 }
11101         }
11102
11103         return found;
11104 }
11105
11106 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11107 {
11108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11109         struct net_device *dev = info->user_ptr[1];
11110         struct cfg80211_ibss_params ibss;
11111         struct wiphy *wiphy;
11112         struct cfg80211_cached_keys *connkeys = NULL;
11113         int err;
11114
11115         memset(&ibss, 0, sizeof(ibss));
11116
11117         if (!info->attrs[NL80211_ATTR_SSID] ||
11118             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11119                 return -EINVAL;
11120
11121         ibss.beacon_interval = 100;
11122
11123         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11124                 ibss.beacon_interval =
11125                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11126
11127         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11128                                            ibss.beacon_interval);
11129         if (err)
11130                 return err;
11131
11132         if (!rdev->ops->join_ibss)
11133                 return -EOPNOTSUPP;
11134
11135         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11136                 return -EOPNOTSUPP;
11137
11138         wiphy = &rdev->wiphy;
11139
11140         if (info->attrs[NL80211_ATTR_MAC]) {
11141                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11142
11143                 if (!is_valid_ether_addr(ibss.bssid))
11144                         return -EINVAL;
11145         }
11146         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11147         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11148
11149         if (info->attrs[NL80211_ATTR_IE]) {
11150                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11151                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11152         }
11153
11154         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11155         if (err)
11156                 return err;
11157
11158         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11159                                      NL80211_IFTYPE_ADHOC))
11160                 return -EINVAL;
11161
11162         switch (ibss.chandef.width) {
11163         case NL80211_CHAN_WIDTH_5:
11164         case NL80211_CHAN_WIDTH_10:
11165         case NL80211_CHAN_WIDTH_20_NOHT:
11166                 break;
11167         case NL80211_CHAN_WIDTH_20:
11168         case NL80211_CHAN_WIDTH_40:
11169                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11170                         return -EINVAL;
11171                 break;
11172         case NL80211_CHAN_WIDTH_80:
11173         case NL80211_CHAN_WIDTH_80P80:
11174         case NL80211_CHAN_WIDTH_160:
11175                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11176                         return -EINVAL;
11177                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11178                                              NL80211_EXT_FEATURE_VHT_IBSS))
11179                         return -EINVAL;
11180                 break;
11181         case NL80211_CHAN_WIDTH_320:
11182                 return -EINVAL;
11183         default:
11184                 return -EINVAL;
11185         }
11186
11187         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11188         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11189
11190         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11191                 u8 *rates =
11192                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11193                 int n_rates =
11194                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11195                 struct ieee80211_supported_band *sband =
11196                         wiphy->bands[ibss.chandef.chan->band];
11197
11198                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11199                                              &ibss.basic_rates);
11200                 if (err)
11201                         return err;
11202         }
11203
11204         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11205                 memcpy(&ibss.ht_capa_mask,
11206                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11207                        sizeof(ibss.ht_capa_mask));
11208
11209         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11210                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11211                         return -EINVAL;
11212                 memcpy(&ibss.ht_capa,
11213                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11214                        sizeof(ibss.ht_capa));
11215         }
11216
11217         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11218             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11219                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11220                 return -EINVAL;
11221
11222         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11223                 bool no_ht = false;
11224
11225                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11226                 if (IS_ERR(connkeys))
11227                         return PTR_ERR(connkeys);
11228
11229                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11230                     no_ht) {
11231                         kfree_sensitive(connkeys);
11232                         return -EINVAL;
11233                 }
11234         }
11235
11236         ibss.control_port =
11237                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11238
11239         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11240                 int r = validate_pae_over_nl80211(rdev, info);
11241
11242                 if (r < 0) {
11243                         kfree_sensitive(connkeys);
11244                         return r;
11245                 }
11246
11247                 ibss.control_port_over_nl80211 = true;
11248         }
11249
11250         ibss.userspace_handles_dfs =
11251                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11252
11253         wdev_lock(dev->ieee80211_ptr);
11254         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11255         if (err)
11256                 kfree_sensitive(connkeys);
11257         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11258                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11259         wdev_unlock(dev->ieee80211_ptr);
11260
11261         return err;
11262 }
11263
11264 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11265 {
11266         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11267         struct net_device *dev = info->user_ptr[1];
11268
11269         if (!rdev->ops->leave_ibss)
11270                 return -EOPNOTSUPP;
11271
11272         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11273                 return -EOPNOTSUPP;
11274
11275         return cfg80211_leave_ibss(rdev, dev, false);
11276 }
11277
11278 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11279 {
11280         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11281         struct net_device *dev = info->user_ptr[1];
11282         int mcast_rate[NUM_NL80211_BANDS];
11283         u32 nla_rate;
11284
11285         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11286             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11287             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11288                 return -EOPNOTSUPP;
11289
11290         if (!rdev->ops->set_mcast_rate)
11291                 return -EOPNOTSUPP;
11292
11293         memset(mcast_rate, 0, sizeof(mcast_rate));
11294
11295         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11296                 return -EINVAL;
11297
11298         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11299         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11300                 return -EINVAL;
11301
11302         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11303 }
11304
11305 static struct sk_buff *
11306 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11307                             struct wireless_dev *wdev, int approxlen,
11308                             u32 portid, u32 seq, enum nl80211_commands cmd,
11309                             enum nl80211_attrs attr,
11310                             const struct nl80211_vendor_cmd_info *info,
11311                             gfp_t gfp)
11312 {
11313         struct sk_buff *skb;
11314         void *hdr;
11315         struct nlattr *data;
11316
11317         skb = nlmsg_new(approxlen + 100, gfp);
11318         if (!skb)
11319                 return NULL;
11320
11321         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11322         if (!hdr) {
11323                 kfree_skb(skb);
11324                 return NULL;
11325         }
11326
11327         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11328                 goto nla_put_failure;
11329
11330         if (info) {
11331                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11332                                 info->vendor_id))
11333                         goto nla_put_failure;
11334                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11335                                 info->subcmd))
11336                         goto nla_put_failure;
11337         }
11338
11339         if (wdev) {
11340                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11341                                       wdev_id(wdev), NL80211_ATTR_PAD))
11342                         goto nla_put_failure;
11343                 if (wdev->netdev &&
11344                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11345                                 wdev->netdev->ifindex))
11346                         goto nla_put_failure;
11347         }
11348
11349         data = nla_nest_start_noflag(skb, attr);
11350         if (!data)
11351                 goto nla_put_failure;
11352
11353         ((void **)skb->cb)[0] = rdev;
11354         ((void **)skb->cb)[1] = hdr;
11355         ((void **)skb->cb)[2] = data;
11356
11357         return skb;
11358
11359  nla_put_failure:
11360         kfree_skb(skb);
11361         return NULL;
11362 }
11363
11364 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11365                                            struct wireless_dev *wdev,
11366                                            enum nl80211_commands cmd,
11367                                            enum nl80211_attrs attr,
11368                                            unsigned int portid,
11369                                            int vendor_event_idx,
11370                                            int approxlen, gfp_t gfp)
11371 {
11372         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11373         const struct nl80211_vendor_cmd_info *info;
11374
11375         switch (cmd) {
11376         case NL80211_CMD_TESTMODE:
11377                 if (WARN_ON(vendor_event_idx != -1))
11378                         return NULL;
11379                 info = NULL;
11380                 break;
11381         case NL80211_CMD_VENDOR:
11382                 if (WARN_ON(vendor_event_idx < 0 ||
11383                             vendor_event_idx >= wiphy->n_vendor_events))
11384                         return NULL;
11385                 info = &wiphy->vendor_events[vendor_event_idx];
11386                 break;
11387         default:
11388                 WARN_ON(1);
11389                 return NULL;
11390         }
11391
11392         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11393                                            cmd, attr, info, gfp);
11394 }
11395 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11396
11397 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11398 {
11399         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11400         void *hdr = ((void **)skb->cb)[1];
11401         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11402         struct nlattr *data = ((void **)skb->cb)[2];
11403         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11404
11405         /* clear CB data for netlink core to own from now on */
11406         memset(skb->cb, 0, sizeof(skb->cb));
11407
11408         nla_nest_end(skb, data);
11409         genlmsg_end(skb, hdr);
11410
11411         if (nlhdr->nlmsg_pid) {
11412                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11413                                 nlhdr->nlmsg_pid);
11414         } else {
11415                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11416                         mcgrp = NL80211_MCGRP_VENDOR;
11417
11418                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11419                                         skb, 0, mcgrp, gfp);
11420         }
11421 }
11422 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11423
11424 #ifdef CONFIG_NL80211_TESTMODE
11425 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11426 {
11427         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11428         struct wireless_dev *wdev;
11429         int err;
11430
11431         lockdep_assert_held(&rdev->wiphy.mtx);
11432
11433         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11434                                           info->attrs);
11435
11436         if (!rdev->ops->testmode_cmd)
11437                 return -EOPNOTSUPP;
11438
11439         if (IS_ERR(wdev)) {
11440                 err = PTR_ERR(wdev);
11441                 if (err != -EINVAL)
11442                         return err;
11443                 wdev = NULL;
11444         } else if (wdev->wiphy != &rdev->wiphy) {
11445                 return -EINVAL;
11446         }
11447
11448         if (!info->attrs[NL80211_ATTR_TESTDATA])
11449                 return -EINVAL;
11450
11451         rdev->cur_cmd_info = info;
11452         err = rdev_testmode_cmd(rdev, wdev,
11453                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11454                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11455         rdev->cur_cmd_info = NULL;
11456
11457         return err;
11458 }
11459
11460 static int nl80211_testmode_dump(struct sk_buff *skb,
11461                                  struct netlink_callback *cb)
11462 {
11463         struct cfg80211_registered_device *rdev;
11464         struct nlattr **attrbuf = NULL;
11465         int err;
11466         long phy_idx;
11467         void *data = NULL;
11468         int data_len = 0;
11469
11470         rtnl_lock();
11471
11472         if (cb->args[0]) {
11473                 /*
11474                  * 0 is a valid index, but not valid for args[0],
11475                  * so we need to offset by 1.
11476                  */
11477                 phy_idx = cb->args[0] - 1;
11478
11479                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11480                 if (!rdev) {
11481                         err = -ENOENT;
11482                         goto out_err;
11483                 }
11484         } else {
11485                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11486                                   GFP_KERNEL);
11487                 if (!attrbuf) {
11488                         err = -ENOMEM;
11489                         goto out_err;
11490                 }
11491
11492                 err = nlmsg_parse_deprecated(cb->nlh,
11493                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11494                                              attrbuf, nl80211_fam.maxattr,
11495                                              nl80211_policy, NULL);
11496                 if (err)
11497                         goto out_err;
11498
11499                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11500                 if (IS_ERR(rdev)) {
11501                         err = PTR_ERR(rdev);
11502                         goto out_err;
11503                 }
11504                 phy_idx = rdev->wiphy_idx;
11505
11506                 if (attrbuf[NL80211_ATTR_TESTDATA])
11507                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11508         }
11509
11510         if (cb->args[1]) {
11511                 data = nla_data((void *)cb->args[1]);
11512                 data_len = nla_len((void *)cb->args[1]);
11513         }
11514
11515         if (!rdev->ops->testmode_dump) {
11516                 err = -EOPNOTSUPP;
11517                 goto out_err;
11518         }
11519
11520         while (1) {
11521                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11522                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11523                                            NL80211_CMD_TESTMODE);
11524                 struct nlattr *tmdata;
11525
11526                 if (!hdr)
11527                         break;
11528
11529                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11530                         genlmsg_cancel(skb, hdr);
11531                         break;
11532                 }
11533
11534                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11535                 if (!tmdata) {
11536                         genlmsg_cancel(skb, hdr);
11537                         break;
11538                 }
11539                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11540                 nla_nest_end(skb, tmdata);
11541
11542                 if (err == -ENOBUFS || err == -ENOENT) {
11543                         genlmsg_cancel(skb, hdr);
11544                         break;
11545                 } else if (err) {
11546                         genlmsg_cancel(skb, hdr);
11547                         goto out_err;
11548                 }
11549
11550                 genlmsg_end(skb, hdr);
11551         }
11552
11553         err = skb->len;
11554         /* see above */
11555         cb->args[0] = phy_idx + 1;
11556  out_err:
11557         kfree(attrbuf);
11558         rtnl_unlock();
11559         return err;
11560 }
11561 #endif
11562
11563 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11564 {
11565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11566         struct net_device *dev = info->user_ptr[1];
11567         struct cfg80211_connect_params connect;
11568         struct wiphy *wiphy;
11569         struct cfg80211_cached_keys *connkeys = NULL;
11570         u32 freq = 0;
11571         int err;
11572
11573         memset(&connect, 0, sizeof(connect));
11574
11575         if (!info->attrs[NL80211_ATTR_SSID] ||
11576             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11577                 return -EINVAL;
11578
11579         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11580                 connect.auth_type =
11581                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11582                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11583                                              NL80211_CMD_CONNECT))
11584                         return -EINVAL;
11585         } else
11586                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11587
11588         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11589
11590         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11591             !wiphy_ext_feature_isset(&rdev->wiphy,
11592                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11593                 return -EINVAL;
11594         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11595
11596         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11597                                       NL80211_MAX_NR_CIPHER_SUITES);
11598         if (err)
11599                 return err;
11600
11601         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11602             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11603                 return -EOPNOTSUPP;
11604
11605         wiphy = &rdev->wiphy;
11606
11607         connect.bg_scan_period = -1;
11608         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11609                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11610                 connect.bg_scan_period =
11611                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11612         }
11613
11614         if (info->attrs[NL80211_ATTR_MAC])
11615                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11616         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11617                 connect.bssid_hint =
11618                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11619         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11620         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11621
11622         if (info->attrs[NL80211_ATTR_IE]) {
11623                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11624                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11625         }
11626
11627         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11628                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11629                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11630                     !wiphy_ext_feature_isset(&rdev->wiphy,
11631                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11632                         return -EOPNOTSUPP;
11633         } else {
11634                 connect.mfp = NL80211_MFP_NO;
11635         }
11636
11637         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11638                 connect.prev_bssid =
11639                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11640
11641         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11642                 freq = MHZ_TO_KHZ(nla_get_u32(
11643                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11644         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11645                 freq +=
11646                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11647
11648         if (freq) {
11649                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11650                 if (!connect.channel)
11651                         return -EINVAL;
11652         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11653                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11654                 freq = MHZ_TO_KHZ(freq);
11655                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11656                 if (!connect.channel_hint)
11657                         return -EINVAL;
11658         }
11659
11660         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11661                 connect.edmg.channels =
11662                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11663
11664                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11665                         connect.edmg.bw_config =
11666                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11667         }
11668
11669         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11670                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11671                 if (IS_ERR(connkeys))
11672                         return PTR_ERR(connkeys);
11673         }
11674
11675         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11676                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11677
11678         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11679                 memcpy(&connect.ht_capa_mask,
11680                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11681                        sizeof(connect.ht_capa_mask));
11682
11683         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11684                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11685                         kfree_sensitive(connkeys);
11686                         return -EINVAL;
11687                 }
11688                 memcpy(&connect.ht_capa,
11689                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11690                        sizeof(connect.ht_capa));
11691         }
11692
11693         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11694                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11695
11696         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11697                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11698
11699         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11700                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11701
11702         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11703                 memcpy(&connect.vht_capa_mask,
11704                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11705                        sizeof(connect.vht_capa_mask));
11706
11707         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11708                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11709                         kfree_sensitive(connkeys);
11710                         return -EINVAL;
11711                 }
11712                 memcpy(&connect.vht_capa,
11713                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11714                        sizeof(connect.vht_capa));
11715         }
11716
11717         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11718                 if (!((rdev->wiphy.features &
11719                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11720                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11721                     !wiphy_ext_feature_isset(&rdev->wiphy,
11722                                              NL80211_EXT_FEATURE_RRM)) {
11723                         kfree_sensitive(connkeys);
11724                         return -EINVAL;
11725                 }
11726                 connect.flags |= ASSOC_REQ_USE_RRM;
11727         }
11728
11729         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11730         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11731                 kfree_sensitive(connkeys);
11732                 return -EOPNOTSUPP;
11733         }
11734
11735         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11736                 /* bss selection makes no sense if bssid is set */
11737                 if (connect.bssid) {
11738                         kfree_sensitive(connkeys);
11739                         return -EINVAL;
11740                 }
11741
11742                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11743                                        wiphy, &connect.bss_select);
11744                 if (err) {
11745                         kfree_sensitive(connkeys);
11746                         return err;
11747                 }
11748         }
11749
11750         if (wiphy_ext_feature_isset(&rdev->wiphy,
11751                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11752             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11753             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11754             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11755             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11756                 connect.fils_erp_username =
11757                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11758                 connect.fils_erp_username_len =
11759                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11760                 connect.fils_erp_realm =
11761                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11762                 connect.fils_erp_realm_len =
11763                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11764                 connect.fils_erp_next_seq_num =
11765                         nla_get_u16(
11766                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11767                 connect.fils_erp_rrk =
11768                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11769                 connect.fils_erp_rrk_len =
11770                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11771         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11772                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11773                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11774                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11775                 kfree_sensitive(connkeys);
11776                 return -EINVAL;
11777         }
11778
11779         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
11780                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11781                         kfree_sensitive(connkeys);
11782                         GENL_SET_ERR_MSG(info,
11783                                          "external auth requires connection ownership");
11784                         return -EINVAL;
11785                 }
11786                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
11787         }
11788
11789         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
11790                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
11791
11792         wdev_lock(dev->ieee80211_ptr);
11793
11794         err = cfg80211_connect(rdev, dev, &connect, connkeys,
11795                                connect.prev_bssid);
11796         if (err)
11797                 kfree_sensitive(connkeys);
11798
11799         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11800                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11801                 if (connect.bssid)
11802                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11803                                connect.bssid, ETH_ALEN);
11804                 else
11805                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
11806         }
11807
11808         wdev_unlock(dev->ieee80211_ptr);
11809
11810         return err;
11811 }
11812
11813 static int nl80211_update_connect_params(struct sk_buff *skb,
11814                                          struct genl_info *info)
11815 {
11816         struct cfg80211_connect_params connect = {};
11817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11818         struct net_device *dev = info->user_ptr[1];
11819         struct wireless_dev *wdev = dev->ieee80211_ptr;
11820         bool fils_sk_offload;
11821         u32 auth_type;
11822         u32 changed = 0;
11823         int ret;
11824
11825         if (!rdev->ops->update_connect_params)
11826                 return -EOPNOTSUPP;
11827
11828         if (info->attrs[NL80211_ATTR_IE]) {
11829                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11830                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11831                 changed |= UPDATE_ASSOC_IES;
11832         }
11833
11834         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
11835                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
11836
11837         /*
11838          * when driver supports fils-sk offload all attributes must be
11839          * provided. So the else covers "fils-sk-not-all" and
11840          * "no-fils-sk-any".
11841          */
11842         if (fils_sk_offload &&
11843             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11844             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11845             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11846             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11847                 connect.fils_erp_username =
11848                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11849                 connect.fils_erp_username_len =
11850                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11851                 connect.fils_erp_realm =
11852                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11853                 connect.fils_erp_realm_len =
11854                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11855                 connect.fils_erp_next_seq_num =
11856                         nla_get_u16(
11857                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11858                 connect.fils_erp_rrk =
11859                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11860                 connect.fils_erp_rrk_len =
11861                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11862                 changed |= UPDATE_FILS_ERP_INFO;
11863         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11864                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11865                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11866                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11867                 return -EINVAL;
11868         }
11869
11870         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11871                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11872                 if (!nl80211_valid_auth_type(rdev, auth_type,
11873                                              NL80211_CMD_CONNECT))
11874                         return -EINVAL;
11875
11876                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11877                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11878                         return -EINVAL;
11879
11880                 connect.auth_type = auth_type;
11881                 changed |= UPDATE_AUTH_TYPE;
11882         }
11883
11884         wdev_lock(dev->ieee80211_ptr);
11885         if (!wdev->connected)
11886                 ret = -ENOLINK;
11887         else
11888                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11889         wdev_unlock(dev->ieee80211_ptr);
11890
11891         return ret;
11892 }
11893
11894 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11895 {
11896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11897         struct net_device *dev = info->user_ptr[1];
11898         u16 reason;
11899         int ret;
11900
11901         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11902             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11903                 return -EPERM;
11904
11905         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11906                 reason = WLAN_REASON_DEAUTH_LEAVING;
11907         else
11908                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11909
11910         if (reason == 0)
11911                 return -EINVAL;
11912
11913         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11914             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11915                 return -EOPNOTSUPP;
11916
11917         wdev_lock(dev->ieee80211_ptr);
11918         ret = cfg80211_disconnect(rdev, dev, reason, true);
11919         wdev_unlock(dev->ieee80211_ptr);
11920         return ret;
11921 }
11922
11923 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11924 {
11925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11926         struct net *net;
11927         int err;
11928
11929         if (info->attrs[NL80211_ATTR_PID]) {
11930                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11931
11932                 net = get_net_ns_by_pid(pid);
11933         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11934                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11935
11936                 net = get_net_ns_by_fd(fd);
11937         } else {
11938                 return -EINVAL;
11939         }
11940
11941         if (IS_ERR(net))
11942                 return PTR_ERR(net);
11943
11944         err = 0;
11945
11946         /* check if anything to do */
11947         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11948                 err = cfg80211_switch_netns(rdev, net);
11949
11950         put_net(net);
11951         return err;
11952 }
11953
11954 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11955 {
11956         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11957         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11958                         struct cfg80211_pmksa *pmksa) = NULL;
11959         struct net_device *dev = info->user_ptr[1];
11960         struct cfg80211_pmksa pmksa;
11961
11962         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11963
11964         if (!info->attrs[NL80211_ATTR_PMKID])
11965                 return -EINVAL;
11966
11967         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11968
11969         if (info->attrs[NL80211_ATTR_MAC]) {
11970                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11971         } else if (info->attrs[NL80211_ATTR_SSID] &&
11972                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11973                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11974                     info->attrs[NL80211_ATTR_PMK])) {
11975                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11976                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11977                 pmksa.cache_id =
11978                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11979         } else {
11980                 return -EINVAL;
11981         }
11982         if (info->attrs[NL80211_ATTR_PMK]) {
11983                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11984                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11985         }
11986
11987         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11988                 pmksa.pmk_lifetime =
11989                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11990
11991         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11992                 pmksa.pmk_reauth_threshold =
11993                         nla_get_u8(
11994                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11995
11996         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11997             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11998             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11999               wiphy_ext_feature_isset(&rdev->wiphy,
12000                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12001                 return -EOPNOTSUPP;
12002
12003         switch (info->genlhdr->cmd) {
12004         case NL80211_CMD_SET_PMKSA:
12005                 rdev_ops = rdev->ops->set_pmksa;
12006                 break;
12007         case NL80211_CMD_DEL_PMKSA:
12008                 rdev_ops = rdev->ops->del_pmksa;
12009                 break;
12010         default:
12011                 WARN_ON(1);
12012                 break;
12013         }
12014
12015         if (!rdev_ops)
12016                 return -EOPNOTSUPP;
12017
12018         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12019 }
12020
12021 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12022 {
12023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12024         struct net_device *dev = info->user_ptr[1];
12025
12026         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12027             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12028                 return -EOPNOTSUPP;
12029
12030         if (!rdev->ops->flush_pmksa)
12031                 return -EOPNOTSUPP;
12032
12033         return rdev_flush_pmksa(rdev, dev);
12034 }
12035
12036 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12037 {
12038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12039         struct net_device *dev = info->user_ptr[1];
12040         u8 action_code, dialog_token;
12041         u32 peer_capability = 0;
12042         u16 status_code;
12043         u8 *peer;
12044         bool initiator;
12045
12046         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12047             !rdev->ops->tdls_mgmt)
12048                 return -EOPNOTSUPP;
12049
12050         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12051             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12052             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12053             !info->attrs[NL80211_ATTR_IE] ||
12054             !info->attrs[NL80211_ATTR_MAC])
12055                 return -EINVAL;
12056
12057         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12058         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12059         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12060         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12061         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12062         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12063                 peer_capability =
12064                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12065
12066         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
12067                               dialog_token, status_code, peer_capability,
12068                               initiator,
12069                               nla_data(info->attrs[NL80211_ATTR_IE]),
12070                               nla_len(info->attrs[NL80211_ATTR_IE]));
12071 }
12072
12073 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12074 {
12075         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12076         struct net_device *dev = info->user_ptr[1];
12077         enum nl80211_tdls_operation operation;
12078         u8 *peer;
12079
12080         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12081             !rdev->ops->tdls_oper)
12082                 return -EOPNOTSUPP;
12083
12084         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12085             !info->attrs[NL80211_ATTR_MAC])
12086                 return -EINVAL;
12087
12088         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12089         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12090
12091         return rdev_tdls_oper(rdev, dev, peer, operation);
12092 }
12093
12094 static int nl80211_remain_on_channel(struct sk_buff *skb,
12095                                      struct genl_info *info)
12096 {
12097         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12098         unsigned int link_id = nl80211_link_id(info->attrs);
12099         struct wireless_dev *wdev = info->user_ptr[1];
12100         struct cfg80211_chan_def chandef;
12101         struct sk_buff *msg;
12102         void *hdr;
12103         u64 cookie;
12104         u32 duration;
12105         int err;
12106
12107         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12108             !info->attrs[NL80211_ATTR_DURATION])
12109                 return -EINVAL;
12110
12111         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12112
12113         if (!rdev->ops->remain_on_channel ||
12114             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12115                 return -EOPNOTSUPP;
12116
12117         /*
12118          * We should be on that channel for at least a minimum amount of
12119          * time (10ms) but no longer than the driver supports.
12120          */
12121         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12122             duration > rdev->wiphy.max_remain_on_channel_duration)
12123                 return -EINVAL;
12124
12125         err = nl80211_parse_chandef(rdev, info, &chandef);
12126         if (err)
12127                 return err;
12128
12129         wdev_lock(wdev);
12130         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12131                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12132
12133                 oper_chandef = wdev_chandef(wdev, link_id);
12134
12135                 if (WARN_ON(!oper_chandef)) {
12136                         /* cannot happen since we must beacon to get here */
12137                         WARN_ON(1);
12138                         wdev_unlock(wdev);
12139                         return -EBUSY;
12140                 }
12141
12142                 /* note: returns first one if identical chandefs */
12143                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12144                                                              oper_chandef);
12145
12146                 if (compat_chandef != &chandef) {
12147                         wdev_unlock(wdev);
12148                         return -EBUSY;
12149                 }
12150         }
12151         wdev_unlock(wdev);
12152
12153         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12154         if (!msg)
12155                 return -ENOMEM;
12156
12157         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12158                              NL80211_CMD_REMAIN_ON_CHANNEL);
12159         if (!hdr) {
12160                 err = -ENOBUFS;
12161                 goto free_msg;
12162         }
12163
12164         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12165                                      duration, &cookie);
12166
12167         if (err)
12168                 goto free_msg;
12169
12170         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12171                               NL80211_ATTR_PAD))
12172                 goto nla_put_failure;
12173
12174         genlmsg_end(msg, hdr);
12175
12176         return genlmsg_reply(msg, info);
12177
12178  nla_put_failure:
12179         err = -ENOBUFS;
12180  free_msg:
12181         nlmsg_free(msg);
12182         return err;
12183 }
12184
12185 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12186                                             struct genl_info *info)
12187 {
12188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12189         struct wireless_dev *wdev = info->user_ptr[1];
12190         u64 cookie;
12191
12192         if (!info->attrs[NL80211_ATTR_COOKIE])
12193                 return -EINVAL;
12194
12195         if (!rdev->ops->cancel_remain_on_channel)
12196                 return -EOPNOTSUPP;
12197
12198         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12199
12200         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12201 }
12202
12203 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12204                                        struct genl_info *info)
12205 {
12206         struct cfg80211_bitrate_mask mask;
12207         unsigned int link_id = nl80211_link_id(info->attrs);
12208         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12209         struct net_device *dev = info->user_ptr[1];
12210         struct wireless_dev *wdev = dev->ieee80211_ptr;
12211         int err;
12212
12213         if (!rdev->ops->set_bitrate_mask)
12214                 return -EOPNOTSUPP;
12215
12216         wdev_lock(wdev);
12217         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12218                                             NL80211_ATTR_TX_RATES, &mask,
12219                                             dev, true, link_id);
12220         if (err)
12221                 goto out;
12222
12223         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12224 out:
12225         wdev_unlock(wdev);
12226         return err;
12227 }
12228
12229 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12230 {
12231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12232         struct wireless_dev *wdev = info->user_ptr[1];
12233         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12234
12235         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12236                 return -EINVAL;
12237
12238         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12239                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12240
12241         switch (wdev->iftype) {
12242         case NL80211_IFTYPE_STATION:
12243         case NL80211_IFTYPE_ADHOC:
12244         case NL80211_IFTYPE_P2P_CLIENT:
12245         case NL80211_IFTYPE_AP:
12246         case NL80211_IFTYPE_AP_VLAN:
12247         case NL80211_IFTYPE_MESH_POINT:
12248         case NL80211_IFTYPE_P2P_GO:
12249         case NL80211_IFTYPE_P2P_DEVICE:
12250                 break;
12251         case NL80211_IFTYPE_NAN:
12252         default:
12253                 return -EOPNOTSUPP;
12254         }
12255
12256         /* not much point in registering if we can't reply */
12257         if (!rdev->ops->mgmt_tx)
12258                 return -EOPNOTSUPP;
12259
12260         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12261             !wiphy_ext_feature_isset(&rdev->wiphy,
12262                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12263                 GENL_SET_ERR_MSG(info,
12264                                  "multicast RX registrations are not supported");
12265                 return -EOPNOTSUPP;
12266         }
12267
12268         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12269                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12270                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12271                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12272                                            info->extack);
12273 }
12274
12275 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12276 {
12277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12278         struct wireless_dev *wdev = info->user_ptr[1];
12279         struct cfg80211_chan_def chandef;
12280         int err;
12281         void *hdr = NULL;
12282         u64 cookie;
12283         struct sk_buff *msg = NULL;
12284         struct cfg80211_mgmt_tx_params params = {
12285                 .dont_wait_for_ack =
12286                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12287         };
12288
12289         if (!info->attrs[NL80211_ATTR_FRAME])
12290                 return -EINVAL;
12291
12292         if (!rdev->ops->mgmt_tx)
12293                 return -EOPNOTSUPP;
12294
12295         switch (wdev->iftype) {
12296         case NL80211_IFTYPE_P2P_DEVICE:
12297                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12298                         return -EINVAL;
12299                 break;
12300         case NL80211_IFTYPE_STATION:
12301         case NL80211_IFTYPE_ADHOC:
12302         case NL80211_IFTYPE_P2P_CLIENT:
12303         case NL80211_IFTYPE_AP:
12304         case NL80211_IFTYPE_AP_VLAN:
12305         case NL80211_IFTYPE_MESH_POINT:
12306         case NL80211_IFTYPE_P2P_GO:
12307                 break;
12308         case NL80211_IFTYPE_NAN:
12309         default:
12310                 return -EOPNOTSUPP;
12311         }
12312
12313         if (info->attrs[NL80211_ATTR_DURATION]) {
12314                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12315                         return -EINVAL;
12316                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12317
12318                 /*
12319                  * We should wait on the channel for at least a minimum amount
12320                  * of time (10ms) but no longer than the driver supports.
12321                  */
12322                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12323                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12324                         return -EINVAL;
12325         }
12326
12327         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12328
12329         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12330                 return -EINVAL;
12331
12332         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12333
12334         /* get the channel if any has been specified, otherwise pass NULL to
12335          * the driver. The latter will use the current one
12336          */
12337         chandef.chan = NULL;
12338         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12339                 err = nl80211_parse_chandef(rdev, info, &chandef);
12340                 if (err)
12341                         return err;
12342         }
12343
12344         if (!chandef.chan && params.offchan)
12345                 return -EINVAL;
12346
12347         wdev_lock(wdev);
12348         if (params.offchan &&
12349             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12350                 wdev_unlock(wdev);
12351                 return -EBUSY;
12352         }
12353
12354         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12355         /*
12356          * This now races due to the unlock, but we cannot check
12357          * the valid links for the _station_ anyway, so that's up
12358          * to the driver.
12359          */
12360         if (params.link_id >= 0 &&
12361             !(wdev->valid_links & BIT(params.link_id))) {
12362                 wdev_unlock(wdev);
12363                 return -EINVAL;
12364         }
12365         wdev_unlock(wdev);
12366
12367         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12368         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12369
12370         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12371                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12372                 int i;
12373
12374                 if (len % sizeof(u16))
12375                         return -EINVAL;
12376
12377                 params.n_csa_offsets = len / sizeof(u16);
12378                 params.csa_offsets =
12379                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12380
12381                 /* check that all the offsets fit the frame */
12382                 for (i = 0; i < params.n_csa_offsets; i++) {
12383                         if (params.csa_offsets[i] >= params.len)
12384                                 return -EINVAL;
12385                 }
12386         }
12387
12388         if (!params.dont_wait_for_ack) {
12389                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12390                 if (!msg)
12391                         return -ENOMEM;
12392
12393                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12394                                      NL80211_CMD_FRAME);
12395                 if (!hdr) {
12396                         err = -ENOBUFS;
12397                         goto free_msg;
12398                 }
12399         }
12400
12401         params.chan = chandef.chan;
12402         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12403         if (err)
12404                 goto free_msg;
12405
12406         if (msg) {
12407                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12408                                       NL80211_ATTR_PAD))
12409                         goto nla_put_failure;
12410
12411                 genlmsg_end(msg, hdr);
12412                 return genlmsg_reply(msg, info);
12413         }
12414
12415         return 0;
12416
12417  nla_put_failure:
12418         err = -ENOBUFS;
12419  free_msg:
12420         nlmsg_free(msg);
12421         return err;
12422 }
12423
12424 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12425 {
12426         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12427         struct wireless_dev *wdev = info->user_ptr[1];
12428         u64 cookie;
12429
12430         if (!info->attrs[NL80211_ATTR_COOKIE])
12431                 return -EINVAL;
12432
12433         if (!rdev->ops->mgmt_tx_cancel_wait)
12434                 return -EOPNOTSUPP;
12435
12436         switch (wdev->iftype) {
12437         case NL80211_IFTYPE_STATION:
12438         case NL80211_IFTYPE_ADHOC:
12439         case NL80211_IFTYPE_P2P_CLIENT:
12440         case NL80211_IFTYPE_AP:
12441         case NL80211_IFTYPE_AP_VLAN:
12442         case NL80211_IFTYPE_P2P_GO:
12443         case NL80211_IFTYPE_P2P_DEVICE:
12444                 break;
12445         case NL80211_IFTYPE_NAN:
12446         default:
12447                 return -EOPNOTSUPP;
12448         }
12449
12450         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12451
12452         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12453 }
12454
12455 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12456 {
12457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12458         struct wireless_dev *wdev;
12459         struct net_device *dev = info->user_ptr[1];
12460         u8 ps_state;
12461         bool state;
12462         int err;
12463
12464         if (!info->attrs[NL80211_ATTR_PS_STATE])
12465                 return -EINVAL;
12466
12467         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12468
12469         wdev = dev->ieee80211_ptr;
12470
12471         if (!rdev->ops->set_power_mgmt)
12472                 return -EOPNOTSUPP;
12473
12474         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12475
12476         if (state == wdev->ps)
12477                 return 0;
12478
12479         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12480         if (!err)
12481                 wdev->ps = state;
12482         return err;
12483 }
12484
12485 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12486 {
12487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12488         enum nl80211_ps_state ps_state;
12489         struct wireless_dev *wdev;
12490         struct net_device *dev = info->user_ptr[1];
12491         struct sk_buff *msg;
12492         void *hdr;
12493         int err;
12494
12495         wdev = dev->ieee80211_ptr;
12496
12497         if (!rdev->ops->set_power_mgmt)
12498                 return -EOPNOTSUPP;
12499
12500         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12501         if (!msg)
12502                 return -ENOMEM;
12503
12504         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12505                              NL80211_CMD_GET_POWER_SAVE);
12506         if (!hdr) {
12507                 err = -ENOBUFS;
12508                 goto free_msg;
12509         }
12510
12511         if (wdev->ps)
12512                 ps_state = NL80211_PS_ENABLED;
12513         else
12514                 ps_state = NL80211_PS_DISABLED;
12515
12516         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12517                 goto nla_put_failure;
12518
12519         genlmsg_end(msg, hdr);
12520         return genlmsg_reply(msg, info);
12521
12522  nla_put_failure:
12523         err = -ENOBUFS;
12524  free_msg:
12525         nlmsg_free(msg);
12526         return err;
12527 }
12528
12529 static const struct nla_policy
12530 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12531         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12532         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12533         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12534         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12535         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12536         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12537         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12538 };
12539
12540 static int nl80211_set_cqm_txe(struct genl_info *info,
12541                                u32 rate, u32 pkts, u32 intvl)
12542 {
12543         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12544         struct net_device *dev = info->user_ptr[1];
12545         struct wireless_dev *wdev = dev->ieee80211_ptr;
12546
12547         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12548                 return -EINVAL;
12549
12550         if (!rdev->ops->set_cqm_txe_config)
12551                 return -EOPNOTSUPP;
12552
12553         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12554             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12555                 return -EOPNOTSUPP;
12556
12557         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12558 }
12559
12560 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12561                                     struct net_device *dev)
12562 {
12563         struct wireless_dev *wdev = dev->ieee80211_ptr;
12564         s32 last, low, high;
12565         u32 hyst;
12566         int i, n, low_index;
12567         int err;
12568
12569         /* RSSI reporting disabled? */
12570         if (!wdev->cqm_config)
12571                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12572
12573         /*
12574          * Obtain current RSSI value if possible, if not and no RSSI threshold
12575          * event has been received yet, we should receive an event after a
12576          * connection is established and enough beacons received to calculate
12577          * the average.
12578          */
12579         if (!wdev->cqm_config->last_rssi_event_value &&
12580             wdev->links[0].client.current_bss &&
12581             rdev->ops->get_station) {
12582                 struct station_info sinfo = {};
12583                 u8 *mac_addr;
12584
12585                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12586
12587                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12588                 if (err)
12589                         return err;
12590
12591                 cfg80211_sinfo_release_content(&sinfo);
12592                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12593                         wdev->cqm_config->last_rssi_event_value =
12594                                 (s8) sinfo.rx_beacon_signal_avg;
12595         }
12596
12597         last = wdev->cqm_config->last_rssi_event_value;
12598         hyst = wdev->cqm_config->rssi_hyst;
12599         n = wdev->cqm_config->n_rssi_thresholds;
12600
12601         for (i = 0; i < n; i++) {
12602                 i = array_index_nospec(i, n);
12603                 if (last < wdev->cqm_config->rssi_thresholds[i])
12604                         break;
12605         }
12606
12607         low_index = i - 1;
12608         if (low_index >= 0) {
12609                 low_index = array_index_nospec(low_index, n);
12610                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12611         } else {
12612                 low = S32_MIN;
12613         }
12614         if (i < n) {
12615                 i = array_index_nospec(i, n);
12616                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12617         } else {
12618                 high = S32_MAX;
12619         }
12620
12621         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12622 }
12623
12624 static int nl80211_set_cqm_rssi(struct genl_info *info,
12625                                 const s32 *thresholds, int n_thresholds,
12626                                 u32 hysteresis)
12627 {
12628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12629         struct net_device *dev = info->user_ptr[1];
12630         struct wireless_dev *wdev = dev->ieee80211_ptr;
12631         int i, err;
12632         s32 prev = S32_MIN;
12633
12634         /* Check all values negative and sorted */
12635         for (i = 0; i < n_thresholds; i++) {
12636                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12637                         return -EINVAL;
12638
12639                 prev = thresholds[i];
12640         }
12641
12642         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12643             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12644                 return -EOPNOTSUPP;
12645
12646         wdev_lock(wdev);
12647         cfg80211_cqm_config_free(wdev);
12648         wdev_unlock(wdev);
12649
12650         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12651                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12652                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12653
12654                 return rdev_set_cqm_rssi_config(rdev, dev,
12655                                                 thresholds[0], hysteresis);
12656         }
12657
12658         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12659                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12660                 return -EOPNOTSUPP;
12661
12662         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12663                 n_thresholds = 0;
12664
12665         wdev_lock(wdev);
12666         if (n_thresholds) {
12667                 struct cfg80211_cqm_config *cqm_config;
12668
12669                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12670                                                  n_thresholds),
12671                                      GFP_KERNEL);
12672                 if (!cqm_config) {
12673                         err = -ENOMEM;
12674                         goto unlock;
12675                 }
12676
12677                 cqm_config->rssi_hyst = hysteresis;
12678                 cqm_config->n_rssi_thresholds = n_thresholds;
12679                 memcpy(cqm_config->rssi_thresholds, thresholds,
12680                        flex_array_size(cqm_config, rssi_thresholds,
12681                                        n_thresholds));
12682
12683                 wdev->cqm_config = cqm_config;
12684         }
12685
12686         err = cfg80211_cqm_rssi_update(rdev, dev);
12687
12688 unlock:
12689         wdev_unlock(wdev);
12690
12691         return err;
12692 }
12693
12694 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12695 {
12696         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12697         struct nlattr *cqm;
12698         int err;
12699
12700         cqm = info->attrs[NL80211_ATTR_CQM];
12701         if (!cqm)
12702                 return -EINVAL;
12703
12704         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12705                                           nl80211_attr_cqm_policy,
12706                                           info->extack);
12707         if (err)
12708                 return err;
12709
12710         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12711             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12712                 const s32 *thresholds =
12713                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12714                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12715                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12716
12717                 if (len % 4)
12718                         return -EINVAL;
12719
12720                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12721                                             hysteresis);
12722         }
12723
12724         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12725             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12726             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12727                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12728                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12729                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12730
12731                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12732         }
12733
12734         return -EINVAL;
12735 }
12736
12737 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12738 {
12739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12740         struct net_device *dev = info->user_ptr[1];
12741         struct ocb_setup setup = {};
12742         int err;
12743
12744         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12745         if (err)
12746                 return err;
12747
12748         return cfg80211_join_ocb(rdev, dev, &setup);
12749 }
12750
12751 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12752 {
12753         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12754         struct net_device *dev = info->user_ptr[1];
12755
12756         return cfg80211_leave_ocb(rdev, dev);
12757 }
12758
12759 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12760 {
12761         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12762         struct net_device *dev = info->user_ptr[1];
12763         struct mesh_config cfg;
12764         struct mesh_setup setup;
12765         int err;
12766
12767         /* start with default */
12768         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
12769         memcpy(&setup, &default_mesh_setup, sizeof(setup));
12770
12771         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
12772                 /* and parse parameters if given */
12773                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
12774                 if (err)
12775                         return err;
12776         }
12777
12778         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
12779             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
12780                 return -EINVAL;
12781
12782         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
12783         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
12784
12785         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
12786             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
12787                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
12788                         return -EINVAL;
12789
12790         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
12791                 setup.beacon_interval =
12792                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
12793
12794                 err = cfg80211_validate_beacon_int(rdev,
12795                                                    NL80211_IFTYPE_MESH_POINT,
12796                                                    setup.beacon_interval);
12797                 if (err)
12798                         return err;
12799         }
12800
12801         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
12802                 setup.dtim_period =
12803                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
12804                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
12805                         return -EINVAL;
12806         }
12807
12808         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
12809                 /* parse additional setup parameters if given */
12810                 err = nl80211_parse_mesh_setup(info, &setup);
12811                 if (err)
12812                         return err;
12813         }
12814
12815         if (setup.user_mpm)
12816                 cfg.auto_open_plinks = false;
12817
12818         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12819                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12820                 if (err)
12821                         return err;
12822         } else {
12823                 /* __cfg80211_join_mesh() will sort it out */
12824                 setup.chandef.chan = NULL;
12825         }
12826
12827         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
12828                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12829                 int n_rates =
12830                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12831                 struct ieee80211_supported_band *sband;
12832
12833                 if (!setup.chandef.chan)
12834                         return -EINVAL;
12835
12836                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
12837
12838                 err = ieee80211_get_ratemask(sband, rates, n_rates,
12839                                              &setup.basic_rates);
12840                 if (err)
12841                         return err;
12842         }
12843
12844         if (info->attrs[NL80211_ATTR_TX_RATES]) {
12845                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12846                                                     NL80211_ATTR_TX_RATES,
12847                                                     &setup.beacon_rate,
12848                                                     dev, false, 0);
12849                 if (err)
12850                         return err;
12851
12852                 if (!setup.chandef.chan)
12853                         return -EINVAL;
12854
12855                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
12856                                               &setup.beacon_rate);
12857                 if (err)
12858                         return err;
12859         }
12860
12861         setup.userspace_handles_dfs =
12862                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
12863
12864         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
12865                 int r = validate_pae_over_nl80211(rdev, info);
12866
12867                 if (r < 0)
12868                         return r;
12869
12870                 setup.control_port_over_nl80211 = true;
12871         }
12872
12873         wdev_lock(dev->ieee80211_ptr);
12874         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
12875         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
12876                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12877         wdev_unlock(dev->ieee80211_ptr);
12878
12879         return err;
12880 }
12881
12882 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12883 {
12884         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12885         struct net_device *dev = info->user_ptr[1];
12886
12887         return cfg80211_leave_mesh(rdev, dev);
12888 }
12889
12890 #ifdef CONFIG_PM
12891 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
12892                                         struct cfg80211_registered_device *rdev)
12893 {
12894         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
12895         struct nlattr *nl_pats, *nl_pat;
12896         int i, pat_len;
12897
12898         if (!wowlan->n_patterns)
12899                 return 0;
12900
12901         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12902         if (!nl_pats)
12903                 return -ENOBUFS;
12904
12905         for (i = 0; i < wowlan->n_patterns; i++) {
12906                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12907                 if (!nl_pat)
12908                         return -ENOBUFS;
12909                 pat_len = wowlan->patterns[i].pattern_len;
12910                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12911                             wowlan->patterns[i].mask) ||
12912                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12913                             wowlan->patterns[i].pattern) ||
12914                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12915                                 wowlan->patterns[i].pkt_offset))
12916                         return -ENOBUFS;
12917                 nla_nest_end(msg, nl_pat);
12918         }
12919         nla_nest_end(msg, nl_pats);
12920
12921         return 0;
12922 }
12923
12924 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12925                                    struct cfg80211_wowlan_tcp *tcp)
12926 {
12927         struct nlattr *nl_tcp;
12928
12929         if (!tcp)
12930                 return 0;
12931
12932         nl_tcp = nla_nest_start_noflag(msg,
12933                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12934         if (!nl_tcp)
12935                 return -ENOBUFS;
12936
12937         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12938             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12939             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12940             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12941             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12942             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12943                     tcp->payload_len, tcp->payload) ||
12944             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12945                         tcp->data_interval) ||
12946             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12947                     tcp->wake_len, tcp->wake_data) ||
12948             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12949                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12950                 return -ENOBUFS;
12951
12952         if (tcp->payload_seq.len &&
12953             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12954                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12955                 return -ENOBUFS;
12956
12957         if (tcp->payload_tok.len &&
12958             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12959                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12960                     &tcp->payload_tok))
12961                 return -ENOBUFS;
12962
12963         nla_nest_end(msg, nl_tcp);
12964
12965         return 0;
12966 }
12967
12968 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12969                                   struct cfg80211_sched_scan_request *req)
12970 {
12971         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12972         int i;
12973
12974         if (!req)
12975                 return 0;
12976
12977         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12978         if (!nd)
12979                 return -ENOBUFS;
12980
12981         if (req->n_scan_plans == 1 &&
12982             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12983                         req->scan_plans[0].interval * 1000))
12984                 return -ENOBUFS;
12985
12986         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12987                 return -ENOBUFS;
12988
12989         if (req->relative_rssi_set) {
12990                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12991
12992                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12993                                req->relative_rssi))
12994                         return -ENOBUFS;
12995
12996                 rssi_adjust.band = req->rssi_adjust.band;
12997                 rssi_adjust.delta = req->rssi_adjust.delta;
12998                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12999                             sizeof(rssi_adjust), &rssi_adjust))
13000                         return -ENOBUFS;
13001         }
13002
13003         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13004         if (!freqs)
13005                 return -ENOBUFS;
13006
13007         for (i = 0; i < req->n_channels; i++) {
13008                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13009                         return -ENOBUFS;
13010         }
13011
13012         nla_nest_end(msg, freqs);
13013
13014         if (req->n_match_sets) {
13015                 matches = nla_nest_start_noflag(msg,
13016                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13017                 if (!matches)
13018                         return -ENOBUFS;
13019
13020                 for (i = 0; i < req->n_match_sets; i++) {
13021                         match = nla_nest_start_noflag(msg, i);
13022                         if (!match)
13023                                 return -ENOBUFS;
13024
13025                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13026                                     req->match_sets[i].ssid.ssid_len,
13027                                     req->match_sets[i].ssid.ssid))
13028                                 return -ENOBUFS;
13029                         nla_nest_end(msg, match);
13030                 }
13031                 nla_nest_end(msg, matches);
13032         }
13033
13034         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13035         if (!scan_plans)
13036                 return -ENOBUFS;
13037
13038         for (i = 0; i < req->n_scan_plans; i++) {
13039                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13040                 if (!scan_plan)
13041                         return -ENOBUFS;
13042
13043                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13044                                 req->scan_plans[i].interval) ||
13045                     (req->scan_plans[i].iterations &&
13046                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13047                                  req->scan_plans[i].iterations)))
13048                         return -ENOBUFS;
13049                 nla_nest_end(msg, scan_plan);
13050         }
13051         nla_nest_end(msg, scan_plans);
13052
13053         nla_nest_end(msg, nd);
13054
13055         return 0;
13056 }
13057
13058 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13059 {
13060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13061         struct sk_buff *msg;
13062         void *hdr;
13063         u32 size = NLMSG_DEFAULT_SIZE;
13064
13065         if (!rdev->wiphy.wowlan)
13066                 return -EOPNOTSUPP;
13067
13068         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13069                 /* adjust size to have room for all the data */
13070                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13071                         rdev->wiphy.wowlan_config->tcp->payload_len +
13072                         rdev->wiphy.wowlan_config->tcp->wake_len +
13073                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13074         }
13075
13076         msg = nlmsg_new(size, GFP_KERNEL);
13077         if (!msg)
13078                 return -ENOMEM;
13079
13080         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13081                              NL80211_CMD_GET_WOWLAN);
13082         if (!hdr)
13083                 goto nla_put_failure;
13084
13085         if (rdev->wiphy.wowlan_config) {
13086                 struct nlattr *nl_wowlan;
13087
13088                 nl_wowlan = nla_nest_start_noflag(msg,
13089                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13090                 if (!nl_wowlan)
13091                         goto nla_put_failure;
13092
13093                 if ((rdev->wiphy.wowlan_config->any &&
13094                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13095                     (rdev->wiphy.wowlan_config->disconnect &&
13096                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13097                     (rdev->wiphy.wowlan_config->magic_pkt &&
13098                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13099                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13100                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13101                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13102                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13103                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13104                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13105                     (rdev->wiphy.wowlan_config->rfkill_release &&
13106                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13107                         goto nla_put_failure;
13108
13109                 if (nl80211_send_wowlan_patterns(msg, rdev))
13110                         goto nla_put_failure;
13111
13112                 if (nl80211_send_wowlan_tcp(msg,
13113                                             rdev->wiphy.wowlan_config->tcp))
13114                         goto nla_put_failure;
13115
13116                 if (nl80211_send_wowlan_nd(
13117                             msg,
13118                             rdev->wiphy.wowlan_config->nd_config))
13119                         goto nla_put_failure;
13120
13121                 nla_nest_end(msg, nl_wowlan);
13122         }
13123
13124         genlmsg_end(msg, hdr);
13125         return genlmsg_reply(msg, info);
13126
13127 nla_put_failure:
13128         nlmsg_free(msg);
13129         return -ENOBUFS;
13130 }
13131
13132 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13133                                     struct nlattr *attr,
13134                                     struct cfg80211_wowlan *trig)
13135 {
13136         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13137         struct cfg80211_wowlan_tcp *cfg;
13138         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13139         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13140         u32 size;
13141         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13142         int err, port;
13143
13144         if (!rdev->wiphy.wowlan->tcp)
13145                 return -EINVAL;
13146
13147         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13148                                           nl80211_wowlan_tcp_policy, NULL);
13149         if (err)
13150                 return err;
13151
13152         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13153             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13154             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13155             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13156             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13157             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13158             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13159             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13160                 return -EINVAL;
13161
13162         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13163         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13164                 return -EINVAL;
13165
13166         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13167                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13168             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13169                 return -EINVAL;
13170
13171         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13172         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13173                 return -EINVAL;
13174
13175         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13176         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13177                 return -EINVAL;
13178
13179         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13180                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13181
13182                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13183                 tokens_size = tokln - sizeof(*tok);
13184
13185                 if (!tok->len || tokens_size % tok->len)
13186                         return -EINVAL;
13187                 if (!rdev->wiphy.wowlan->tcp->tok)
13188                         return -EINVAL;
13189                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13190                         return -EINVAL;
13191                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13192                         return -EINVAL;
13193                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13194                         return -EINVAL;
13195                 if (tok->offset + tok->len > data_size)
13196                         return -EINVAL;
13197         }
13198
13199         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13200                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13201                 if (!rdev->wiphy.wowlan->tcp->seq)
13202                         return -EINVAL;
13203                 if (seq->len == 0 || seq->len > 4)
13204                         return -EINVAL;
13205                 if (seq->len + seq->offset > data_size)
13206                         return -EINVAL;
13207         }
13208
13209         size = sizeof(*cfg);
13210         size += data_size;
13211         size += wake_size + wake_mask_size;
13212         size += tokens_size;
13213
13214         cfg = kzalloc(size, GFP_KERNEL);
13215         if (!cfg)
13216                 return -ENOMEM;
13217         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13218         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13219         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13220                ETH_ALEN);
13221         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13222                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13223         else
13224                 port = 0;
13225 #ifdef CONFIG_INET
13226         /* allocate a socket and port for it and use it */
13227         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13228                             IPPROTO_TCP, &cfg->sock, 1);
13229         if (err) {
13230                 kfree(cfg);
13231                 return err;
13232         }
13233         if (inet_csk_get_port(cfg->sock->sk, port)) {
13234                 sock_release(cfg->sock);
13235                 kfree(cfg);
13236                 return -EADDRINUSE;
13237         }
13238         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13239 #else
13240         if (!port) {
13241                 kfree(cfg);
13242                 return -EINVAL;
13243         }
13244         cfg->src_port = port;
13245 #endif
13246
13247         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13248         cfg->payload_len = data_size;
13249         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13250         memcpy((void *)cfg->payload,
13251                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13252                data_size);
13253         if (seq)
13254                 cfg->payload_seq = *seq;
13255         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13256         cfg->wake_len = wake_size;
13257         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13258         memcpy((void *)cfg->wake_data,
13259                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13260                wake_size);
13261         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13262                          data_size + wake_size;
13263         memcpy((void *)cfg->wake_mask,
13264                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13265                wake_mask_size);
13266         if (tok) {
13267                 cfg->tokens_size = tokens_size;
13268                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
13269         }
13270
13271         trig->tcp = cfg;
13272
13273         return 0;
13274 }
13275
13276 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13277                                    const struct wiphy_wowlan_support *wowlan,
13278                                    struct nlattr *attr,
13279                                    struct cfg80211_wowlan *trig)
13280 {
13281         struct nlattr **tb;
13282         int err;
13283
13284         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13285         if (!tb)
13286                 return -ENOMEM;
13287
13288         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13289                 err = -EOPNOTSUPP;
13290                 goto out;
13291         }
13292
13293         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13294                                           nl80211_policy, NULL);
13295         if (err)
13296                 goto out;
13297
13298         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13299                                                    wowlan->max_nd_match_sets);
13300         err = PTR_ERR_OR_ZERO(trig->nd_config);
13301         if (err)
13302                 trig->nd_config = NULL;
13303
13304 out:
13305         kfree(tb);
13306         return err;
13307 }
13308
13309 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13310 {
13311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13312         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13313         struct cfg80211_wowlan new_triggers = {};
13314         struct cfg80211_wowlan *ntrig;
13315         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13316         int err, i;
13317         bool prev_enabled = rdev->wiphy.wowlan_config;
13318         bool regular = false;
13319
13320         if (!wowlan)
13321                 return -EOPNOTSUPP;
13322
13323         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13324                 cfg80211_rdev_free_wowlan(rdev);
13325                 rdev->wiphy.wowlan_config = NULL;
13326                 goto set_wakeup;
13327         }
13328
13329         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13330                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13331                                           nl80211_wowlan_policy, info->extack);
13332         if (err)
13333                 return err;
13334
13335         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13336                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13337                         return -EINVAL;
13338                 new_triggers.any = true;
13339         }
13340
13341         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13342                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13343                         return -EINVAL;
13344                 new_triggers.disconnect = true;
13345                 regular = true;
13346         }
13347
13348         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13349                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13350                         return -EINVAL;
13351                 new_triggers.magic_pkt = true;
13352                 regular = true;
13353         }
13354
13355         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13356                 return -EINVAL;
13357
13358         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13359                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13360                         return -EINVAL;
13361                 new_triggers.gtk_rekey_failure = true;
13362                 regular = true;
13363         }
13364
13365         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13366                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13367                         return -EINVAL;
13368                 new_triggers.eap_identity_req = true;
13369                 regular = true;
13370         }
13371
13372         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13373                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13374                         return -EINVAL;
13375                 new_triggers.four_way_handshake = true;
13376                 regular = true;
13377         }
13378
13379         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13380                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13381                         return -EINVAL;
13382                 new_triggers.rfkill_release = true;
13383                 regular = true;
13384         }
13385
13386         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13387                 struct nlattr *pat;
13388                 int n_patterns = 0;
13389                 int rem, pat_len, mask_len, pkt_offset;
13390                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13391
13392                 regular = true;
13393
13394                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13395                                     rem)
13396                         n_patterns++;
13397                 if (n_patterns > wowlan->n_patterns)
13398                         return -EINVAL;
13399
13400                 new_triggers.patterns = kcalloc(n_patterns,
13401                                                 sizeof(new_triggers.patterns[0]),
13402                                                 GFP_KERNEL);
13403                 if (!new_triggers.patterns)
13404                         return -ENOMEM;
13405
13406                 new_triggers.n_patterns = n_patterns;
13407                 i = 0;
13408
13409                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13410                                     rem) {
13411                         u8 *mask_pat;
13412
13413                         err = nla_parse_nested_deprecated(pat_tb,
13414                                                           MAX_NL80211_PKTPAT,
13415                                                           pat,
13416                                                           nl80211_packet_pattern_policy,
13417                                                           info->extack);
13418                         if (err)
13419                                 goto error;
13420
13421                         err = -EINVAL;
13422                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13423                             !pat_tb[NL80211_PKTPAT_PATTERN])
13424                                 goto error;
13425                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13426                         mask_len = DIV_ROUND_UP(pat_len, 8);
13427                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13428                                 goto error;
13429                         if (pat_len > wowlan->pattern_max_len ||
13430                             pat_len < wowlan->pattern_min_len)
13431                                 goto error;
13432
13433                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13434                                 pkt_offset = 0;
13435                         else
13436                                 pkt_offset = nla_get_u32(
13437                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13438                         if (pkt_offset > wowlan->max_pkt_offset)
13439                                 goto error;
13440                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13441
13442                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13443                         if (!mask_pat) {
13444                                 err = -ENOMEM;
13445                                 goto error;
13446                         }
13447                         new_triggers.patterns[i].mask = mask_pat;
13448                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13449                                mask_len);
13450                         mask_pat += mask_len;
13451                         new_triggers.patterns[i].pattern = mask_pat;
13452                         new_triggers.patterns[i].pattern_len = pat_len;
13453                         memcpy(mask_pat,
13454                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13455                                pat_len);
13456                         i++;
13457                 }
13458         }
13459
13460         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13461                 regular = true;
13462                 err = nl80211_parse_wowlan_tcp(
13463                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13464                         &new_triggers);
13465                 if (err)
13466                         goto error;
13467         }
13468
13469         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13470                 regular = true;
13471                 err = nl80211_parse_wowlan_nd(
13472                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13473                         &new_triggers);
13474                 if (err)
13475                         goto error;
13476         }
13477
13478         /* The 'any' trigger means the device continues operating more or less
13479          * as in its normal operation mode and wakes up the host on most of the
13480          * normal interrupts (like packet RX, ...)
13481          * It therefore makes little sense to combine with the more constrained
13482          * wakeup trigger modes.
13483          */
13484         if (new_triggers.any && regular) {
13485                 err = -EINVAL;
13486                 goto error;
13487         }
13488
13489         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13490         if (!ntrig) {
13491                 err = -ENOMEM;
13492                 goto error;
13493         }
13494         cfg80211_rdev_free_wowlan(rdev);
13495         rdev->wiphy.wowlan_config = ntrig;
13496
13497  set_wakeup:
13498         if (rdev->ops->set_wakeup &&
13499             prev_enabled != !!rdev->wiphy.wowlan_config)
13500                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13501
13502         return 0;
13503  error:
13504         for (i = 0; i < new_triggers.n_patterns; i++)
13505                 kfree(new_triggers.patterns[i].mask);
13506         kfree(new_triggers.patterns);
13507         if (new_triggers.tcp && new_triggers.tcp->sock)
13508                 sock_release(new_triggers.tcp->sock);
13509         kfree(new_triggers.tcp);
13510         kfree(new_triggers.nd_config);
13511         return err;
13512 }
13513 #endif
13514
13515 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13516                                        struct cfg80211_registered_device *rdev)
13517 {
13518         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13519         int i, j, pat_len;
13520         struct cfg80211_coalesce_rules *rule;
13521
13522         if (!rdev->coalesce->n_rules)
13523                 return 0;
13524
13525         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13526         if (!nl_rules)
13527                 return -ENOBUFS;
13528
13529         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13530                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13531                 if (!nl_rule)
13532                         return -ENOBUFS;
13533
13534                 rule = &rdev->coalesce->rules[i];
13535                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13536                                 rule->delay))
13537                         return -ENOBUFS;
13538
13539                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13540                                 rule->condition))
13541                         return -ENOBUFS;
13542
13543                 nl_pats = nla_nest_start_noflag(msg,
13544                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13545                 if (!nl_pats)
13546                         return -ENOBUFS;
13547
13548                 for (j = 0; j < rule->n_patterns; j++) {
13549                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13550                         if (!nl_pat)
13551                                 return -ENOBUFS;
13552                         pat_len = rule->patterns[j].pattern_len;
13553                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13554                                     DIV_ROUND_UP(pat_len, 8),
13555                                     rule->patterns[j].mask) ||
13556                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13557                                     rule->patterns[j].pattern) ||
13558                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13559                                         rule->patterns[j].pkt_offset))
13560                                 return -ENOBUFS;
13561                         nla_nest_end(msg, nl_pat);
13562                 }
13563                 nla_nest_end(msg, nl_pats);
13564                 nla_nest_end(msg, nl_rule);
13565         }
13566         nla_nest_end(msg, nl_rules);
13567
13568         return 0;
13569 }
13570
13571 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13572 {
13573         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13574         struct sk_buff *msg;
13575         void *hdr;
13576
13577         if (!rdev->wiphy.coalesce)
13578                 return -EOPNOTSUPP;
13579
13580         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13581         if (!msg)
13582                 return -ENOMEM;
13583
13584         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13585                              NL80211_CMD_GET_COALESCE);
13586         if (!hdr)
13587                 goto nla_put_failure;
13588
13589         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13590                 goto nla_put_failure;
13591
13592         genlmsg_end(msg, hdr);
13593         return genlmsg_reply(msg, info);
13594
13595 nla_put_failure:
13596         nlmsg_free(msg);
13597         return -ENOBUFS;
13598 }
13599
13600 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13601 {
13602         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13603         int i, j;
13604         struct cfg80211_coalesce_rules *rule;
13605
13606         if (!coalesce)
13607                 return;
13608
13609         for (i = 0; i < coalesce->n_rules; i++) {
13610                 rule = &coalesce->rules[i];
13611                 for (j = 0; j < rule->n_patterns; j++)
13612                         kfree(rule->patterns[j].mask);
13613                 kfree(rule->patterns);
13614         }
13615         kfree(coalesce->rules);
13616         kfree(coalesce);
13617         rdev->coalesce = NULL;
13618 }
13619
13620 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13621                                        struct nlattr *rule,
13622                                        struct cfg80211_coalesce_rules *new_rule)
13623 {
13624         int err, i;
13625         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13626         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13627         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13628         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13629
13630         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13631                                           rule, nl80211_coalesce_policy, NULL);
13632         if (err)
13633                 return err;
13634
13635         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13636                 new_rule->delay =
13637                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13638         if (new_rule->delay > coalesce->max_delay)
13639                 return -EINVAL;
13640
13641         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13642                 new_rule->condition =
13643                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13644
13645         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13646                 return -EINVAL;
13647
13648         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13649                             rem)
13650                 n_patterns++;
13651         if (n_patterns > coalesce->n_patterns)
13652                 return -EINVAL;
13653
13654         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13655                                      GFP_KERNEL);
13656         if (!new_rule->patterns)
13657                 return -ENOMEM;
13658
13659         new_rule->n_patterns = n_patterns;
13660         i = 0;
13661
13662         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13663                             rem) {
13664                 u8 *mask_pat;
13665
13666                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13667                                                   pat,
13668                                                   nl80211_packet_pattern_policy,
13669                                                   NULL);
13670                 if (err)
13671                         return err;
13672
13673                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13674                     !pat_tb[NL80211_PKTPAT_PATTERN])
13675                         return -EINVAL;
13676                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13677                 mask_len = DIV_ROUND_UP(pat_len, 8);
13678                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13679                         return -EINVAL;
13680                 if (pat_len > coalesce->pattern_max_len ||
13681                     pat_len < coalesce->pattern_min_len)
13682                         return -EINVAL;
13683
13684                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13685                         pkt_offset = 0;
13686                 else
13687                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13688                 if (pkt_offset > coalesce->max_pkt_offset)
13689                         return -EINVAL;
13690                 new_rule->patterns[i].pkt_offset = pkt_offset;
13691
13692                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13693                 if (!mask_pat)
13694                         return -ENOMEM;
13695
13696                 new_rule->patterns[i].mask = mask_pat;
13697                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13698                        mask_len);
13699
13700                 mask_pat += mask_len;
13701                 new_rule->patterns[i].pattern = mask_pat;
13702                 new_rule->patterns[i].pattern_len = pat_len;
13703                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13704                        pat_len);
13705                 i++;
13706         }
13707
13708         return 0;
13709 }
13710
13711 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13712 {
13713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13714         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13715         struct cfg80211_coalesce new_coalesce = {};
13716         struct cfg80211_coalesce *n_coalesce;
13717         int err, rem_rule, n_rules = 0, i, j;
13718         struct nlattr *rule;
13719         struct cfg80211_coalesce_rules *tmp_rule;
13720
13721         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13722                 return -EOPNOTSUPP;
13723
13724         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13725                 cfg80211_rdev_free_coalesce(rdev);
13726                 rdev_set_coalesce(rdev, NULL);
13727                 return 0;
13728         }
13729
13730         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13731                             rem_rule)
13732                 n_rules++;
13733         if (n_rules > coalesce->n_rules)
13734                 return -EINVAL;
13735
13736         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13737                                      GFP_KERNEL);
13738         if (!new_coalesce.rules)
13739                 return -ENOMEM;
13740
13741         new_coalesce.n_rules = n_rules;
13742         i = 0;
13743
13744         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13745                             rem_rule) {
13746                 err = nl80211_parse_coalesce_rule(rdev, rule,
13747                                                   &new_coalesce.rules[i]);
13748                 if (err)
13749                         goto error;
13750
13751                 i++;
13752         }
13753
13754         err = rdev_set_coalesce(rdev, &new_coalesce);
13755         if (err)
13756                 goto error;
13757
13758         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13759         if (!n_coalesce) {
13760                 err = -ENOMEM;
13761                 goto error;
13762         }
13763         cfg80211_rdev_free_coalesce(rdev);
13764         rdev->coalesce = n_coalesce;
13765
13766         return 0;
13767 error:
13768         for (i = 0; i < new_coalesce.n_rules; i++) {
13769                 tmp_rule = &new_coalesce.rules[i];
13770                 for (j = 0; j < tmp_rule->n_patterns; j++)
13771                         kfree(tmp_rule->patterns[j].mask);
13772                 kfree(tmp_rule->patterns);
13773         }
13774         kfree(new_coalesce.rules);
13775
13776         return err;
13777 }
13778
13779 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
13780 {
13781         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13782         struct net_device *dev = info->user_ptr[1];
13783         struct wireless_dev *wdev = dev->ieee80211_ptr;
13784         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
13785         struct cfg80211_gtk_rekey_data rekey_data = {};
13786         int err;
13787
13788         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
13789                 return -EINVAL;
13790
13791         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
13792                                           info->attrs[NL80211_ATTR_REKEY_DATA],
13793                                           nl80211_rekey_policy, info->extack);
13794         if (err)
13795                 return err;
13796
13797         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
13798             !tb[NL80211_REKEY_DATA_KCK])
13799                 return -EINVAL;
13800         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
13801             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13802               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
13803                 return -ERANGE;
13804         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
13805             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13806               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
13807                 return -ERANGE;
13808
13809         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
13810         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
13811         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
13812         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
13813         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
13814         if (tb[NL80211_REKEY_DATA_AKM])
13815                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
13816
13817         wdev_lock(wdev);
13818         if (!wdev->connected) {
13819                 err = -ENOTCONN;
13820                 goto out;
13821         }
13822
13823         if (!rdev->ops->set_rekey_data) {
13824                 err = -EOPNOTSUPP;
13825                 goto out;
13826         }
13827
13828         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
13829  out:
13830         wdev_unlock(wdev);
13831         return err;
13832 }
13833
13834 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
13835                                              struct genl_info *info)
13836 {
13837         struct net_device *dev = info->user_ptr[1];
13838         struct wireless_dev *wdev = dev->ieee80211_ptr;
13839
13840         if (wdev->iftype != NL80211_IFTYPE_AP &&
13841             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13842                 return -EINVAL;
13843
13844         if (wdev->ap_unexpected_nlportid)
13845                 return -EBUSY;
13846
13847         wdev->ap_unexpected_nlportid = info->snd_portid;
13848         return 0;
13849 }
13850
13851 static int nl80211_probe_client(struct sk_buff *skb,
13852                                 struct genl_info *info)
13853 {
13854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13855         struct net_device *dev = info->user_ptr[1];
13856         struct wireless_dev *wdev = dev->ieee80211_ptr;
13857         struct sk_buff *msg;
13858         void *hdr;
13859         const u8 *addr;
13860         u64 cookie;
13861         int err;
13862
13863         if (wdev->iftype != NL80211_IFTYPE_AP &&
13864             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13865                 return -EOPNOTSUPP;
13866
13867         if (!info->attrs[NL80211_ATTR_MAC])
13868                 return -EINVAL;
13869
13870         if (!rdev->ops->probe_client)
13871                 return -EOPNOTSUPP;
13872
13873         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13874         if (!msg)
13875                 return -ENOMEM;
13876
13877         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13878                              NL80211_CMD_PROBE_CLIENT);
13879         if (!hdr) {
13880                 err = -ENOBUFS;
13881                 goto free_msg;
13882         }
13883
13884         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13885
13886         err = rdev_probe_client(rdev, dev, addr, &cookie);
13887         if (err)
13888                 goto free_msg;
13889
13890         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13891                               NL80211_ATTR_PAD))
13892                 goto nla_put_failure;
13893
13894         genlmsg_end(msg, hdr);
13895
13896         return genlmsg_reply(msg, info);
13897
13898  nla_put_failure:
13899         err = -ENOBUFS;
13900  free_msg:
13901         nlmsg_free(msg);
13902         return err;
13903 }
13904
13905 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13906 {
13907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13908         struct cfg80211_beacon_registration *reg, *nreg;
13909         int rv;
13910
13911         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13912                 return -EOPNOTSUPP;
13913
13914         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13915         if (!nreg)
13916                 return -ENOMEM;
13917
13918         /* First, check if already registered. */
13919         spin_lock_bh(&rdev->beacon_registrations_lock);
13920         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13921                 if (reg->nlportid == info->snd_portid) {
13922                         rv = -EALREADY;
13923                         goto out_err;
13924                 }
13925         }
13926         /* Add it to the list */
13927         nreg->nlportid = info->snd_portid;
13928         list_add(&nreg->list, &rdev->beacon_registrations);
13929
13930         spin_unlock_bh(&rdev->beacon_registrations_lock);
13931
13932         return 0;
13933 out_err:
13934         spin_unlock_bh(&rdev->beacon_registrations_lock);
13935         kfree(nreg);
13936         return rv;
13937 }
13938
13939 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13940 {
13941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13942         struct wireless_dev *wdev = info->user_ptr[1];
13943         int err;
13944
13945         if (!rdev->ops->start_p2p_device)
13946                 return -EOPNOTSUPP;
13947
13948         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13949                 return -EOPNOTSUPP;
13950
13951         if (wdev_running(wdev))
13952                 return 0;
13953
13954         if (rfkill_blocked(rdev->wiphy.rfkill))
13955                 return -ERFKILL;
13956
13957         err = rdev_start_p2p_device(rdev, wdev);
13958         if (err)
13959                 return err;
13960
13961         wdev->is_running = true;
13962         rdev->opencount++;
13963
13964         return 0;
13965 }
13966
13967 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13968 {
13969         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13970         struct wireless_dev *wdev = info->user_ptr[1];
13971
13972         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13973                 return -EOPNOTSUPP;
13974
13975         if (!rdev->ops->stop_p2p_device)
13976                 return -EOPNOTSUPP;
13977
13978         cfg80211_stop_p2p_device(rdev, wdev);
13979
13980         return 0;
13981 }
13982
13983 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13984 {
13985         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13986         struct wireless_dev *wdev = info->user_ptr[1];
13987         struct cfg80211_nan_conf conf = {};
13988         int err;
13989
13990         if (wdev->iftype != NL80211_IFTYPE_NAN)
13991                 return -EOPNOTSUPP;
13992
13993         if (wdev_running(wdev))
13994                 return -EEXIST;
13995
13996         if (rfkill_blocked(rdev->wiphy.rfkill))
13997                 return -ERFKILL;
13998
13999         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14000                 return -EINVAL;
14001
14002         conf.master_pref =
14003                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14004
14005         if (info->attrs[NL80211_ATTR_BANDS]) {
14006                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14007
14008                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14009                         return -EOPNOTSUPP;
14010
14011                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14012                         return -EINVAL;
14013
14014                 conf.bands = bands;
14015         }
14016
14017         err = rdev_start_nan(rdev, wdev, &conf);
14018         if (err)
14019                 return err;
14020
14021         wdev->is_running = true;
14022         rdev->opencount++;
14023
14024         return 0;
14025 }
14026
14027 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14028 {
14029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14030         struct wireless_dev *wdev = info->user_ptr[1];
14031
14032         if (wdev->iftype != NL80211_IFTYPE_NAN)
14033                 return -EOPNOTSUPP;
14034
14035         cfg80211_stop_nan(rdev, wdev);
14036
14037         return 0;
14038 }
14039
14040 static int validate_nan_filter(struct nlattr *filter_attr)
14041 {
14042         struct nlattr *attr;
14043         int len = 0, n_entries = 0, rem;
14044
14045         nla_for_each_nested(attr, filter_attr, rem) {
14046                 len += nla_len(attr);
14047                 n_entries++;
14048         }
14049
14050         if (len >= U8_MAX)
14051                 return -EINVAL;
14052
14053         return n_entries;
14054 }
14055
14056 static int handle_nan_filter(struct nlattr *attr_filter,
14057                              struct cfg80211_nan_func *func,
14058                              bool tx)
14059 {
14060         struct nlattr *attr;
14061         int n_entries, rem, i;
14062         struct cfg80211_nan_func_filter *filter;
14063
14064         n_entries = validate_nan_filter(attr_filter);
14065         if (n_entries < 0)
14066                 return n_entries;
14067
14068         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14069
14070         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14071         if (!filter)
14072                 return -ENOMEM;
14073
14074         i = 0;
14075         nla_for_each_nested(attr, attr_filter, rem) {
14076                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14077                 if (!filter[i].filter)
14078                         goto err;
14079
14080                 filter[i].len = nla_len(attr);
14081                 i++;
14082         }
14083         if (tx) {
14084                 func->num_tx_filters = n_entries;
14085                 func->tx_filters = filter;
14086         } else {
14087                 func->num_rx_filters = n_entries;
14088                 func->rx_filters = filter;
14089         }
14090
14091         return 0;
14092
14093 err:
14094         i = 0;
14095         nla_for_each_nested(attr, attr_filter, rem) {
14096                 kfree(filter[i].filter);
14097                 i++;
14098         }
14099         kfree(filter);
14100         return -ENOMEM;
14101 }
14102
14103 static int nl80211_nan_add_func(struct sk_buff *skb,
14104                                 struct genl_info *info)
14105 {
14106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14107         struct wireless_dev *wdev = info->user_ptr[1];
14108         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14109         struct cfg80211_nan_func *func;
14110         struct sk_buff *msg = NULL;
14111         void *hdr = NULL;
14112         int err = 0;
14113
14114         if (wdev->iftype != NL80211_IFTYPE_NAN)
14115                 return -EOPNOTSUPP;
14116
14117         if (!wdev_running(wdev))
14118                 return -ENOTCONN;
14119
14120         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14121                 return -EINVAL;
14122
14123         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14124                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14125                                           nl80211_nan_func_policy,
14126                                           info->extack);
14127         if (err)
14128                 return err;
14129
14130         func = kzalloc(sizeof(*func), GFP_KERNEL);
14131         if (!func)
14132                 return -ENOMEM;
14133
14134         func->cookie = cfg80211_assign_cookie(rdev);
14135
14136         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14137                 err = -EINVAL;
14138                 goto out;
14139         }
14140
14141
14142         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14143
14144         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14145                 err = -EINVAL;
14146                 goto out;
14147         }
14148
14149         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14150                sizeof(func->service_id));
14151
14152         func->close_range =
14153                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14154
14155         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14156                 func->serv_spec_info_len =
14157                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14158                 func->serv_spec_info =
14159                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14160                                 func->serv_spec_info_len,
14161                                 GFP_KERNEL);
14162                 if (!func->serv_spec_info) {
14163                         err = -ENOMEM;
14164                         goto out;
14165                 }
14166         }
14167
14168         if (tb[NL80211_NAN_FUNC_TTL])
14169                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14170
14171         switch (func->type) {
14172         case NL80211_NAN_FUNC_PUBLISH:
14173                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14174                         err = -EINVAL;
14175                         goto out;
14176                 }
14177
14178                 func->publish_type =
14179                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14180                 func->publish_bcast =
14181                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14182
14183                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14184                         func->publish_bcast) {
14185                         err = -EINVAL;
14186                         goto out;
14187                 }
14188                 break;
14189         case NL80211_NAN_FUNC_SUBSCRIBE:
14190                 func->subscribe_active =
14191                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14192                 break;
14193         case NL80211_NAN_FUNC_FOLLOW_UP:
14194                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14195                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14196                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14197                         err = -EINVAL;
14198                         goto out;
14199                 }
14200
14201                 func->followup_id =
14202                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14203                 func->followup_reqid =
14204                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14205                 memcpy(func->followup_dest.addr,
14206                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14207                        sizeof(func->followup_dest.addr));
14208                 if (func->ttl) {
14209                         err = -EINVAL;
14210                         goto out;
14211                 }
14212                 break;
14213         default:
14214                 err = -EINVAL;
14215                 goto out;
14216         }
14217
14218         if (tb[NL80211_NAN_FUNC_SRF]) {
14219                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14220
14221                 err = nla_parse_nested_deprecated(srf_tb,
14222                                                   NL80211_NAN_SRF_ATTR_MAX,
14223                                                   tb[NL80211_NAN_FUNC_SRF],
14224                                                   nl80211_nan_srf_policy,
14225                                                   info->extack);
14226                 if (err)
14227                         goto out;
14228
14229                 func->srf_include =
14230                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14231
14232                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14233                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14234                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14235                                 err = -EINVAL;
14236                                 goto out;
14237                         }
14238
14239                         func->srf_bf_len =
14240                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14241                         func->srf_bf =
14242                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14243                                         func->srf_bf_len, GFP_KERNEL);
14244                         if (!func->srf_bf) {
14245                                 err = -ENOMEM;
14246                                 goto out;
14247                         }
14248
14249                         func->srf_bf_idx =
14250                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14251                 } else {
14252                         struct nlattr *attr, *mac_attr =
14253                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14254                         int n_entries, rem, i = 0;
14255
14256                         if (!mac_attr) {
14257                                 err = -EINVAL;
14258                                 goto out;
14259                         }
14260
14261                         n_entries = validate_acl_mac_addrs(mac_attr);
14262                         if (n_entries <= 0) {
14263                                 err = -EINVAL;
14264                                 goto out;
14265                         }
14266
14267                         func->srf_num_macs = n_entries;
14268                         func->srf_macs =
14269                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14270                                         GFP_KERNEL);
14271                         if (!func->srf_macs) {
14272                                 err = -ENOMEM;
14273                                 goto out;
14274                         }
14275
14276                         nla_for_each_nested(attr, mac_attr, rem)
14277                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14278                                        sizeof(*func->srf_macs));
14279                 }
14280         }
14281
14282         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14283                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14284                                         func, true);
14285                 if (err)
14286                         goto out;
14287         }
14288
14289         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14290                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14291                                         func, false);
14292                 if (err)
14293                         goto out;
14294         }
14295
14296         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14297         if (!msg) {
14298                 err = -ENOMEM;
14299                 goto out;
14300         }
14301
14302         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14303                              NL80211_CMD_ADD_NAN_FUNCTION);
14304         /* This can't really happen - we just allocated 4KB */
14305         if (WARN_ON(!hdr)) {
14306                 err = -ENOMEM;
14307                 goto out;
14308         }
14309
14310         err = rdev_add_nan_func(rdev, wdev, func);
14311 out:
14312         if (err < 0) {
14313                 cfg80211_free_nan_func(func);
14314                 nlmsg_free(msg);
14315                 return err;
14316         }
14317
14318         /* propagate the instance id and cookie to userspace  */
14319         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14320                               NL80211_ATTR_PAD))
14321                 goto nla_put_failure;
14322
14323         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14324         if (!func_attr)
14325                 goto nla_put_failure;
14326
14327         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14328                        func->instance_id))
14329                 goto nla_put_failure;
14330
14331         nla_nest_end(msg, func_attr);
14332
14333         genlmsg_end(msg, hdr);
14334         return genlmsg_reply(msg, info);
14335
14336 nla_put_failure:
14337         nlmsg_free(msg);
14338         return -ENOBUFS;
14339 }
14340
14341 static int nl80211_nan_del_func(struct sk_buff *skb,
14342                                struct genl_info *info)
14343 {
14344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14345         struct wireless_dev *wdev = info->user_ptr[1];
14346         u64 cookie;
14347
14348         if (wdev->iftype != NL80211_IFTYPE_NAN)
14349                 return -EOPNOTSUPP;
14350
14351         if (!wdev_running(wdev))
14352                 return -ENOTCONN;
14353
14354         if (!info->attrs[NL80211_ATTR_COOKIE])
14355                 return -EINVAL;
14356
14357         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14358
14359         rdev_del_nan_func(rdev, wdev, cookie);
14360
14361         return 0;
14362 }
14363
14364 static int nl80211_nan_change_config(struct sk_buff *skb,
14365                                      struct genl_info *info)
14366 {
14367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14368         struct wireless_dev *wdev = info->user_ptr[1];
14369         struct cfg80211_nan_conf conf = {};
14370         u32 changed = 0;
14371
14372         if (wdev->iftype != NL80211_IFTYPE_NAN)
14373                 return -EOPNOTSUPP;
14374
14375         if (!wdev_running(wdev))
14376                 return -ENOTCONN;
14377
14378         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14379                 conf.master_pref =
14380                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14381                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14382                         return -EINVAL;
14383
14384                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14385         }
14386
14387         if (info->attrs[NL80211_ATTR_BANDS]) {
14388                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14389
14390                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14391                         return -EOPNOTSUPP;
14392
14393                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14394                         return -EINVAL;
14395
14396                 conf.bands = bands;
14397                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14398         }
14399
14400         if (!changed)
14401                 return -EINVAL;
14402
14403         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14404 }
14405
14406 void cfg80211_nan_match(struct wireless_dev *wdev,
14407                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14408 {
14409         struct wiphy *wiphy = wdev->wiphy;
14410         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14411         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14412         struct sk_buff *msg;
14413         void *hdr;
14414
14415         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14416                 return;
14417
14418         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14419         if (!msg)
14420                 return;
14421
14422         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14423         if (!hdr) {
14424                 nlmsg_free(msg);
14425                 return;
14426         }
14427
14428         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14429             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14430                                          wdev->netdev->ifindex)) ||
14431             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14432                               NL80211_ATTR_PAD))
14433                 goto nla_put_failure;
14434
14435         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14436                               NL80211_ATTR_PAD) ||
14437             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14438                 goto nla_put_failure;
14439
14440         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14441         if (!match_attr)
14442                 goto nla_put_failure;
14443
14444         local_func_attr = nla_nest_start_noflag(msg,
14445                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14446         if (!local_func_attr)
14447                 goto nla_put_failure;
14448
14449         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14450                 goto nla_put_failure;
14451
14452         nla_nest_end(msg, local_func_attr);
14453
14454         peer_func_attr = nla_nest_start_noflag(msg,
14455                                                NL80211_NAN_MATCH_FUNC_PEER);
14456         if (!peer_func_attr)
14457                 goto nla_put_failure;
14458
14459         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14460             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14461                 goto nla_put_failure;
14462
14463         if (match->info && match->info_len &&
14464             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14465                     match->info))
14466                 goto nla_put_failure;
14467
14468         nla_nest_end(msg, peer_func_attr);
14469         nla_nest_end(msg, match_attr);
14470         genlmsg_end(msg, hdr);
14471
14472         if (!wdev->owner_nlportid)
14473                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14474                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14475         else
14476                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14477                                 wdev->owner_nlportid);
14478
14479         return;
14480
14481 nla_put_failure:
14482         nlmsg_free(msg);
14483 }
14484 EXPORT_SYMBOL(cfg80211_nan_match);
14485
14486 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14487                                   u8 inst_id,
14488                                   enum nl80211_nan_func_term_reason reason,
14489                                   u64 cookie, gfp_t gfp)
14490 {
14491         struct wiphy *wiphy = wdev->wiphy;
14492         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14493         struct sk_buff *msg;
14494         struct nlattr *func_attr;
14495         void *hdr;
14496
14497         if (WARN_ON(!inst_id))
14498                 return;
14499
14500         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14501         if (!msg)
14502                 return;
14503
14504         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14505         if (!hdr) {
14506                 nlmsg_free(msg);
14507                 return;
14508         }
14509
14510         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14511             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14512                                          wdev->netdev->ifindex)) ||
14513             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14514                               NL80211_ATTR_PAD))
14515                 goto nla_put_failure;
14516
14517         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14518                               NL80211_ATTR_PAD))
14519                 goto nla_put_failure;
14520
14521         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14522         if (!func_attr)
14523                 goto nla_put_failure;
14524
14525         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14526             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14527                 goto nla_put_failure;
14528
14529         nla_nest_end(msg, func_attr);
14530         genlmsg_end(msg, hdr);
14531
14532         if (!wdev->owner_nlportid)
14533                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14534                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14535         else
14536                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14537                                 wdev->owner_nlportid);
14538
14539         return;
14540
14541 nla_put_failure:
14542         nlmsg_free(msg);
14543 }
14544 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14545
14546 static int nl80211_get_protocol_features(struct sk_buff *skb,
14547                                          struct genl_info *info)
14548 {
14549         void *hdr;
14550         struct sk_buff *msg;
14551
14552         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14553         if (!msg)
14554                 return -ENOMEM;
14555
14556         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14557                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14558         if (!hdr)
14559                 goto nla_put_failure;
14560
14561         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14562                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14563                 goto nla_put_failure;
14564
14565         genlmsg_end(msg, hdr);
14566         return genlmsg_reply(msg, info);
14567
14568  nla_put_failure:
14569         kfree_skb(msg);
14570         return -ENOBUFS;
14571 }
14572
14573 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14574 {
14575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14576         struct cfg80211_update_ft_ies_params ft_params;
14577         struct net_device *dev = info->user_ptr[1];
14578
14579         if (!rdev->ops->update_ft_ies)
14580                 return -EOPNOTSUPP;
14581
14582         if (!info->attrs[NL80211_ATTR_MDID] ||
14583             !info->attrs[NL80211_ATTR_IE])
14584                 return -EINVAL;
14585
14586         memset(&ft_params, 0, sizeof(ft_params));
14587         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14588         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14589         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14590
14591         return rdev_update_ft_ies(rdev, dev, &ft_params);
14592 }
14593
14594 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14595                                        struct genl_info *info)
14596 {
14597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14598         struct wireless_dev *wdev = info->user_ptr[1];
14599         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14600         u16 duration;
14601         int ret;
14602
14603         if (!rdev->ops->crit_proto_start)
14604                 return -EOPNOTSUPP;
14605
14606         if (WARN_ON(!rdev->ops->crit_proto_stop))
14607                 return -EINVAL;
14608
14609         if (rdev->crit_proto_nlportid)
14610                 return -EBUSY;
14611
14612         /* determine protocol if provided */
14613         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14614                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14615
14616         if (proto >= NUM_NL80211_CRIT_PROTO)
14617                 return -EINVAL;
14618
14619         /* timeout must be provided */
14620         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14621                 return -EINVAL;
14622
14623         duration =
14624                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14625
14626         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14627         if (!ret)
14628                 rdev->crit_proto_nlportid = info->snd_portid;
14629
14630         return ret;
14631 }
14632
14633 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14634                                       struct genl_info *info)
14635 {
14636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14637         struct wireless_dev *wdev = info->user_ptr[1];
14638
14639         if (!rdev->ops->crit_proto_stop)
14640                 return -EOPNOTSUPP;
14641
14642         if (rdev->crit_proto_nlportid) {
14643                 rdev->crit_proto_nlportid = 0;
14644                 rdev_crit_proto_stop(rdev, wdev);
14645         }
14646         return 0;
14647 }
14648
14649 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14650                                        struct nlattr *attr,
14651                                        struct netlink_ext_ack *extack)
14652 {
14653         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14654                 if (attr->nla_type & NLA_F_NESTED) {
14655                         NL_SET_ERR_MSG_ATTR(extack, attr,
14656                                             "unexpected nested data");
14657                         return -EINVAL;
14658                 }
14659
14660                 return 0;
14661         }
14662
14663         if (!(attr->nla_type & NLA_F_NESTED)) {
14664                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14665                 return -EINVAL;
14666         }
14667
14668         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14669 }
14670
14671 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14672 {
14673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14674         struct wireless_dev *wdev =
14675                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14676                                            info->attrs);
14677         int i, err;
14678         u32 vid, subcmd;
14679
14680         if (!rdev->wiphy.vendor_commands)
14681                 return -EOPNOTSUPP;
14682
14683         if (IS_ERR(wdev)) {
14684                 err = PTR_ERR(wdev);
14685                 if (err != -EINVAL)
14686                         return err;
14687                 wdev = NULL;
14688         } else if (wdev->wiphy != &rdev->wiphy) {
14689                 return -EINVAL;
14690         }
14691
14692         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14693             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14694                 return -EINVAL;
14695
14696         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14697         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14698         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14699                 const struct wiphy_vendor_command *vcmd;
14700                 void *data = NULL;
14701                 int len = 0;
14702
14703                 vcmd = &rdev->wiphy.vendor_commands[i];
14704
14705                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14706                         continue;
14707
14708                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14709                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14710                         if (!wdev)
14711                                 return -EINVAL;
14712                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14713                             !wdev->netdev)
14714                                 return -EINVAL;
14715
14716                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14717                                 if (!wdev_running(wdev))
14718                                         return -ENETDOWN;
14719                         }
14720                 } else {
14721                         wdev = NULL;
14722                 }
14723
14724                 if (!vcmd->doit)
14725                         return -EOPNOTSUPP;
14726
14727                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14728                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14729                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14730
14731                         err = nl80211_vendor_check_policy(vcmd,
14732                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14733                                         info->extack);
14734                         if (err)
14735                                 return err;
14736                 }
14737
14738                 rdev->cur_cmd_info = info;
14739                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14740                 rdev->cur_cmd_info = NULL;
14741                 return err;
14742         }
14743
14744         return -EOPNOTSUPP;
14745 }
14746
14747 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14748                                        struct netlink_callback *cb,
14749                                        struct cfg80211_registered_device **rdev,
14750                                        struct wireless_dev **wdev)
14751 {
14752         struct nlattr **attrbuf;
14753         u32 vid, subcmd;
14754         unsigned int i;
14755         int vcmd_idx = -1;
14756         int err;
14757         void *data = NULL;
14758         unsigned int data_len = 0;
14759
14760         if (cb->args[0]) {
14761                 /* subtract the 1 again here */
14762                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
14763                 struct wireless_dev *tmp;
14764
14765                 if (!wiphy)
14766                         return -ENODEV;
14767                 *rdev = wiphy_to_rdev(wiphy);
14768                 *wdev = NULL;
14769
14770                 if (cb->args[1]) {
14771                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
14772                                 if (tmp->identifier == cb->args[1] - 1) {
14773                                         *wdev = tmp;
14774                                         break;
14775                                 }
14776                         }
14777                 }
14778
14779                 /* keep rtnl locked in successful case */
14780                 return 0;
14781         }
14782
14783         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
14784         if (!attrbuf)
14785                 return -ENOMEM;
14786
14787         err = nlmsg_parse_deprecated(cb->nlh,
14788                                      GENL_HDRLEN + nl80211_fam.hdrsize,
14789                                      attrbuf, nl80211_fam.maxattr,
14790                                      nl80211_policy, NULL);
14791         if (err)
14792                 goto out;
14793
14794         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
14795             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
14796                 err = -EINVAL;
14797                 goto out;
14798         }
14799
14800         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
14801         if (IS_ERR(*wdev))
14802                 *wdev = NULL;
14803
14804         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
14805         if (IS_ERR(*rdev)) {
14806                 err = PTR_ERR(*rdev);
14807                 goto out;
14808         }
14809
14810         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
14811         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
14812
14813         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
14814                 const struct wiphy_vendor_command *vcmd;
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->dumpit) {
14822                         err = -EOPNOTSUPP;
14823                         goto out;
14824                 }
14825
14826                 vcmd_idx = i;
14827                 break;
14828         }
14829
14830         if (vcmd_idx < 0) {
14831                 err = -EOPNOTSUPP;
14832                 goto out;
14833         }
14834
14835         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
14836                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14837                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14838
14839                 err = nl80211_vendor_check_policy(
14840                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
14841                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
14842                                 cb->extack);
14843                 if (err)
14844                         goto out;
14845         }
14846
14847         /* 0 is the first index - add 1 to parse only once */
14848         cb->args[0] = (*rdev)->wiphy_idx + 1;
14849         /* add 1 to know if it was NULL */
14850         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
14851         cb->args[2] = vcmd_idx;
14852         cb->args[3] = (unsigned long)data;
14853         cb->args[4] = data_len;
14854
14855         /* keep rtnl locked in successful case */
14856         err = 0;
14857 out:
14858         kfree(attrbuf);
14859         return err;
14860 }
14861
14862 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
14863                                    struct netlink_callback *cb)
14864 {
14865         struct cfg80211_registered_device *rdev;
14866         struct wireless_dev *wdev;
14867         unsigned int vcmd_idx;
14868         const struct wiphy_vendor_command *vcmd;
14869         void *data;
14870         int data_len;
14871         int err;
14872         struct nlattr *vendor_data;
14873
14874         rtnl_lock();
14875         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
14876         if (err)
14877                 goto out;
14878
14879         vcmd_idx = cb->args[2];
14880         data = (void *)cb->args[3];
14881         data_len = cb->args[4];
14882         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14883
14884         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14885                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14886                 if (!wdev) {
14887                         err = -EINVAL;
14888                         goto out;
14889                 }
14890                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14891                     !wdev->netdev) {
14892                         err = -EINVAL;
14893                         goto out;
14894                 }
14895
14896                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14897                         if (!wdev_running(wdev)) {
14898                                 err = -ENETDOWN;
14899                                 goto out;
14900                         }
14901                 }
14902         }
14903
14904         while (1) {
14905                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
14906                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
14907                                            NL80211_CMD_VENDOR);
14908                 if (!hdr)
14909                         break;
14910
14911                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14912                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
14913                                                wdev_id(wdev),
14914                                                NL80211_ATTR_PAD))) {
14915                         genlmsg_cancel(skb, hdr);
14916                         break;
14917                 }
14918
14919                 vendor_data = nla_nest_start_noflag(skb,
14920                                                     NL80211_ATTR_VENDOR_DATA);
14921                 if (!vendor_data) {
14922                         genlmsg_cancel(skb, hdr);
14923                         break;
14924                 }
14925
14926                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14927                                    (unsigned long *)&cb->args[5]);
14928                 nla_nest_end(skb, vendor_data);
14929
14930                 if (err == -ENOBUFS || err == -ENOENT) {
14931                         genlmsg_cancel(skb, hdr);
14932                         break;
14933                 } else if (err <= 0) {
14934                         genlmsg_cancel(skb, hdr);
14935                         goto out;
14936                 }
14937
14938                 genlmsg_end(skb, hdr);
14939         }
14940
14941         err = skb->len;
14942  out:
14943         rtnl_unlock();
14944         return err;
14945 }
14946
14947 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14948                                            enum nl80211_commands cmd,
14949                                            enum nl80211_attrs attr,
14950                                            int approxlen)
14951 {
14952         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14953
14954         if (WARN_ON(!rdev->cur_cmd_info))
14955                 return NULL;
14956
14957         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14958                                            rdev->cur_cmd_info->snd_portid,
14959                                            rdev->cur_cmd_info->snd_seq,
14960                                            cmd, attr, NULL, GFP_KERNEL);
14961 }
14962 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14963
14964 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14965 {
14966         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14967         void *hdr = ((void **)skb->cb)[1];
14968         struct nlattr *data = ((void **)skb->cb)[2];
14969
14970         /* clear CB data for netlink core to own from now on */
14971         memset(skb->cb, 0, sizeof(skb->cb));
14972
14973         if (WARN_ON(!rdev->cur_cmd_info)) {
14974                 kfree_skb(skb);
14975                 return -EINVAL;
14976         }
14977
14978         nla_nest_end(skb, data);
14979         genlmsg_end(skb, hdr);
14980         return genlmsg_reply(skb, rdev->cur_cmd_info);
14981 }
14982 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14983
14984 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14985 {
14986         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14987
14988         if (WARN_ON(!rdev->cur_cmd_info))
14989                 return 0;
14990
14991         return rdev->cur_cmd_info->snd_portid;
14992 }
14993 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14994
14995 static int nl80211_set_qos_map(struct sk_buff *skb,
14996                                struct genl_info *info)
14997 {
14998         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14999         struct cfg80211_qos_map *qos_map = NULL;
15000         struct net_device *dev = info->user_ptr[1];
15001         u8 *pos, len, num_des, des_len, des;
15002         int ret;
15003
15004         if (!rdev->ops->set_qos_map)
15005                 return -EOPNOTSUPP;
15006
15007         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15008                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15009                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15010
15011                 if (len % 2)
15012                         return -EINVAL;
15013
15014                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15015                 if (!qos_map)
15016                         return -ENOMEM;
15017
15018                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15019                 if (num_des) {
15020                         des_len = num_des *
15021                                 sizeof(struct cfg80211_dscp_exception);
15022                         memcpy(qos_map->dscp_exception, pos, des_len);
15023                         qos_map->num_des = num_des;
15024                         for (des = 0; des < num_des; des++) {
15025                                 if (qos_map->dscp_exception[des].up > 7) {
15026                                         kfree(qos_map);
15027                                         return -EINVAL;
15028                                 }
15029                         }
15030                         pos += des_len;
15031                 }
15032                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15033         }
15034
15035         wdev_lock(dev->ieee80211_ptr);
15036         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15037         if (!ret)
15038                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15039         wdev_unlock(dev->ieee80211_ptr);
15040
15041         kfree(qos_map);
15042         return ret;
15043 }
15044
15045 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15046 {
15047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15048         struct net_device *dev = info->user_ptr[1];
15049         struct wireless_dev *wdev = dev->ieee80211_ptr;
15050         const u8 *peer;
15051         u8 tsid, up;
15052         u16 admitted_time = 0;
15053         int err;
15054
15055         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15056                 return -EOPNOTSUPP;
15057
15058         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15059             !info->attrs[NL80211_ATTR_USER_PRIO])
15060                 return -EINVAL;
15061
15062         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15063         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15064
15065         /* WMM uses TIDs 0-7 even for TSPEC */
15066         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15067                 /* TODO: handle 802.11 TSPEC/admission control
15068                  * need more attributes for that (e.g. BA session requirement);
15069                  * change the WMM adminssion test above to allow both then
15070                  */
15071                 return -EINVAL;
15072         }
15073
15074         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15075
15076         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15077                 admitted_time =
15078                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15079                 if (!admitted_time)
15080                         return -EINVAL;
15081         }
15082
15083         wdev_lock(wdev);
15084         switch (wdev->iftype) {
15085         case NL80211_IFTYPE_STATION:
15086         case NL80211_IFTYPE_P2P_CLIENT:
15087                 if (wdev->connected)
15088                         break;
15089                 err = -ENOTCONN;
15090                 goto out;
15091         default:
15092                 err = -EOPNOTSUPP;
15093                 goto out;
15094         }
15095
15096         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15097
15098  out:
15099         wdev_unlock(wdev);
15100         return err;
15101 }
15102
15103 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15104 {
15105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15106         struct net_device *dev = info->user_ptr[1];
15107         struct wireless_dev *wdev = dev->ieee80211_ptr;
15108         const u8 *peer;
15109         u8 tsid;
15110         int err;
15111
15112         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15113                 return -EINVAL;
15114
15115         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15116         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15117
15118         wdev_lock(wdev);
15119         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15120         wdev_unlock(wdev);
15121
15122         return err;
15123 }
15124
15125 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15126                                        struct genl_info *info)
15127 {
15128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15129         struct net_device *dev = info->user_ptr[1];
15130         struct wireless_dev *wdev = dev->ieee80211_ptr;
15131         struct cfg80211_chan_def chandef = {};
15132         const u8 *addr;
15133         u8 oper_class;
15134         int err;
15135
15136         if (!rdev->ops->tdls_channel_switch ||
15137             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15138                 return -EOPNOTSUPP;
15139
15140         switch (dev->ieee80211_ptr->iftype) {
15141         case NL80211_IFTYPE_STATION:
15142         case NL80211_IFTYPE_P2P_CLIENT:
15143                 break;
15144         default:
15145                 return -EOPNOTSUPP;
15146         }
15147
15148         if (!info->attrs[NL80211_ATTR_MAC] ||
15149             !info->attrs[NL80211_ATTR_OPER_CLASS])
15150                 return -EINVAL;
15151
15152         err = nl80211_parse_chandef(rdev, info, &chandef);
15153         if (err)
15154                 return err;
15155
15156         /*
15157          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15158          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15159          * specification is not defined for them.
15160          */
15161         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15162             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15163             chandef.width != NL80211_CHAN_WIDTH_20)
15164                 return -EINVAL;
15165
15166         /* we will be active on the TDLS link */
15167         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15168                                            wdev->iftype))
15169                 return -EINVAL;
15170
15171         /* don't allow switching to DFS channels */
15172         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15173                 return -EINVAL;
15174
15175         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15176         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15177
15178         wdev_lock(wdev);
15179         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15180         wdev_unlock(wdev);
15181
15182         return err;
15183 }
15184
15185 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15186                                               struct genl_info *info)
15187 {
15188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15189         struct net_device *dev = info->user_ptr[1];
15190         struct wireless_dev *wdev = dev->ieee80211_ptr;
15191         const u8 *addr;
15192
15193         if (!rdev->ops->tdls_channel_switch ||
15194             !rdev->ops->tdls_cancel_channel_switch ||
15195             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15196                 return -EOPNOTSUPP;
15197
15198         switch (dev->ieee80211_ptr->iftype) {
15199         case NL80211_IFTYPE_STATION:
15200         case NL80211_IFTYPE_P2P_CLIENT:
15201                 break;
15202         default:
15203                 return -EOPNOTSUPP;
15204         }
15205
15206         if (!info->attrs[NL80211_ATTR_MAC])
15207                 return -EINVAL;
15208
15209         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15210
15211         wdev_lock(wdev);
15212         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15213         wdev_unlock(wdev);
15214
15215         return 0;
15216 }
15217
15218 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15219                                             struct genl_info *info)
15220 {
15221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15222         struct net_device *dev = info->user_ptr[1];
15223         struct wireless_dev *wdev = dev->ieee80211_ptr;
15224         const struct nlattr *nla;
15225         bool enabled;
15226
15227         if (!rdev->ops->set_multicast_to_unicast)
15228                 return -EOPNOTSUPP;
15229
15230         if (wdev->iftype != NL80211_IFTYPE_AP &&
15231             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15232                 return -EOPNOTSUPP;
15233
15234         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15235         enabled = nla_get_flag(nla);
15236
15237         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15238 }
15239
15240 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15241 {
15242         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15243         struct net_device *dev = info->user_ptr[1];
15244         struct wireless_dev *wdev = dev->ieee80211_ptr;
15245         struct cfg80211_pmk_conf pmk_conf = {};
15246         int ret;
15247
15248         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15249             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15250                 return -EOPNOTSUPP;
15251
15252         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15253                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15254                 return -EOPNOTSUPP;
15255
15256         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15257                 return -EINVAL;
15258
15259         wdev_lock(wdev);
15260         if (!wdev->connected) {
15261                 ret = -ENOTCONN;
15262                 goto out;
15263         }
15264
15265         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15266         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15267                 ret = -EINVAL;
15268                 goto out;
15269         }
15270
15271         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15272         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15273         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15274             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15275                 ret = -EINVAL;
15276                 goto out;
15277         }
15278
15279         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15280                 pmk_conf.pmk_r0_name =
15281                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15282
15283         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15284 out:
15285         wdev_unlock(wdev);
15286         return ret;
15287 }
15288
15289 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15290 {
15291         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15292         struct net_device *dev = info->user_ptr[1];
15293         struct wireless_dev *wdev = dev->ieee80211_ptr;
15294         const u8 *aa;
15295         int ret;
15296
15297         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15298             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15299                 return -EOPNOTSUPP;
15300
15301         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15302                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15303                 return -EOPNOTSUPP;
15304
15305         if (!info->attrs[NL80211_ATTR_MAC])
15306                 return -EINVAL;
15307
15308         wdev_lock(wdev);
15309         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15310         ret = rdev_del_pmk(rdev, dev, aa);
15311         wdev_unlock(wdev);
15312
15313         return ret;
15314 }
15315
15316 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15317 {
15318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15319         struct net_device *dev = info->user_ptr[1];
15320         struct cfg80211_external_auth_params params;
15321
15322         if (!rdev->ops->external_auth)
15323                 return -EOPNOTSUPP;
15324
15325         if (!info->attrs[NL80211_ATTR_SSID] &&
15326             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15327             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15328                 return -EINVAL;
15329
15330         if (!info->attrs[NL80211_ATTR_BSSID])
15331                 return -EINVAL;
15332
15333         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15334                 return -EINVAL;
15335
15336         memset(&params, 0, sizeof(params));
15337
15338         if (info->attrs[NL80211_ATTR_SSID]) {
15339                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15340                 if (params.ssid.ssid_len == 0)
15341                         return -EINVAL;
15342                 memcpy(params.ssid.ssid,
15343                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15344                        params.ssid.ssid_len);
15345         }
15346
15347         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15348                ETH_ALEN);
15349
15350         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15351
15352         if (info->attrs[NL80211_ATTR_PMKID])
15353                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15354
15355         return rdev_external_auth(rdev, dev, &params);
15356 }
15357
15358 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15359 {
15360         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15361         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15362         struct net_device *dev = info->user_ptr[1];
15363         struct wireless_dev *wdev = dev->ieee80211_ptr;
15364         const u8 *buf;
15365         size_t len;
15366         u8 *dest;
15367         u16 proto;
15368         bool noencrypt;
15369         u64 cookie = 0;
15370         int link_id;
15371         int err;
15372
15373         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15374                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15375                 return -EOPNOTSUPP;
15376
15377         if (!rdev->ops->tx_control_port)
15378                 return -EOPNOTSUPP;
15379
15380         if (!info->attrs[NL80211_ATTR_FRAME] ||
15381             !info->attrs[NL80211_ATTR_MAC] ||
15382             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15383                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15384                 return -EINVAL;
15385         }
15386
15387         wdev_lock(wdev);
15388
15389         switch (wdev->iftype) {
15390         case NL80211_IFTYPE_AP:
15391         case NL80211_IFTYPE_P2P_GO:
15392         case NL80211_IFTYPE_MESH_POINT:
15393                 break;
15394         case NL80211_IFTYPE_ADHOC:
15395                 if (wdev->u.ibss.current_bss)
15396                         break;
15397                 err = -ENOTCONN;
15398                 goto out;
15399         case NL80211_IFTYPE_STATION:
15400         case NL80211_IFTYPE_P2P_CLIENT:
15401                 if (wdev->connected)
15402                         break;
15403                 err = -ENOTCONN;
15404                 goto out;
15405         default:
15406                 err = -EOPNOTSUPP;
15407                 goto out;
15408         }
15409
15410         wdev_unlock(wdev);
15411
15412         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15413         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15414         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15415         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15416         noencrypt =
15417                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15418
15419         link_id = nl80211_link_id_or_invalid(info->attrs);
15420
15421         err = rdev_tx_control_port(rdev, dev, buf, len,
15422                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15423                                    dont_wait_for_ack ? NULL : &cookie);
15424         if (!err && !dont_wait_for_ack)
15425                 nl_set_extack_cookie_u64(info->extack, cookie);
15426         return err;
15427  out:
15428         wdev_unlock(wdev);
15429         return err;
15430 }
15431
15432 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15433                                            struct genl_info *info)
15434 {
15435         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15436         struct net_device *dev = info->user_ptr[1];
15437         struct wireless_dev *wdev = dev->ieee80211_ptr;
15438         struct cfg80211_ftm_responder_stats ftm_stats = {};
15439         unsigned int link_id = nl80211_link_id(info->attrs);
15440         struct sk_buff *msg;
15441         void *hdr;
15442         struct nlattr *ftm_stats_attr;
15443         int err;
15444
15445         if (wdev->iftype != NL80211_IFTYPE_AP ||
15446             !wdev->links[link_id].ap.beacon_interval)
15447                 return -EOPNOTSUPP;
15448
15449         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15450         if (err)
15451                 return err;
15452
15453         if (!ftm_stats.filled)
15454                 return -ENODATA;
15455
15456         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15457         if (!msg)
15458                 return -ENOMEM;
15459
15460         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15461                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15462         if (!hdr)
15463                 goto nla_put_failure;
15464
15465         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15466                 goto nla_put_failure;
15467
15468         ftm_stats_attr = nla_nest_start_noflag(msg,
15469                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15470         if (!ftm_stats_attr)
15471                 goto nla_put_failure;
15472
15473 #define SET_FTM(field, name, type)                                       \
15474         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15475             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15476                              ftm_stats.field))                           \
15477                 goto nla_put_failure; } while (0)
15478 #define SET_FTM_U64(field, name)                                         \
15479         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15480             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15481                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15482                 goto nla_put_failure; } while (0)
15483
15484         SET_FTM(success_num, SUCCESS_NUM, u32);
15485         SET_FTM(partial_num, PARTIAL_NUM, u32);
15486         SET_FTM(failed_num, FAILED_NUM, u32);
15487         SET_FTM(asap_num, ASAP_NUM, u32);
15488         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15489         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15490         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15491         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15492         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15493 #undef SET_FTM
15494
15495         nla_nest_end(msg, ftm_stats_attr);
15496
15497         genlmsg_end(msg, hdr);
15498         return genlmsg_reply(msg, info);
15499
15500 nla_put_failure:
15501         nlmsg_free(msg);
15502         return -ENOBUFS;
15503 }
15504
15505 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15506 {
15507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15508         struct cfg80211_update_owe_info owe_info;
15509         struct net_device *dev = info->user_ptr[1];
15510
15511         if (!rdev->ops->update_owe_info)
15512                 return -EOPNOTSUPP;
15513
15514         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15515             !info->attrs[NL80211_ATTR_MAC])
15516                 return -EINVAL;
15517
15518         memset(&owe_info, 0, sizeof(owe_info));
15519         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15520         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15521
15522         if (info->attrs[NL80211_ATTR_IE]) {
15523                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15524                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15525         }
15526
15527         return rdev_update_owe_info(rdev, dev, &owe_info);
15528 }
15529
15530 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15531 {
15532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15533         struct net_device *dev = info->user_ptr[1];
15534         struct wireless_dev *wdev = dev->ieee80211_ptr;
15535         struct station_info sinfo = {};
15536         const u8 *buf;
15537         size_t len;
15538         u8 *dest;
15539         int err;
15540
15541         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15542                 return -EOPNOTSUPP;
15543
15544         if (!info->attrs[NL80211_ATTR_MAC] ||
15545             !info->attrs[NL80211_ATTR_FRAME]) {
15546                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15547                 return -EINVAL;
15548         }
15549
15550         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15551                 return -EOPNOTSUPP;
15552
15553         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15554         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15555         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15556
15557         if (len < sizeof(struct ethhdr))
15558                 return -EINVAL;
15559
15560         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15561             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15562                 return -EINVAL;
15563
15564         err = rdev_get_station(rdev, dev, dest, &sinfo);
15565         if (err)
15566                 return err;
15567
15568         cfg80211_sinfo_release_content(&sinfo);
15569
15570         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15571 }
15572
15573 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15574                           struct nlattr *attrs[], struct net_device *dev,
15575                           struct cfg80211_tid_cfg *tid_conf,
15576                           struct genl_info *info, const u8 *peer,
15577                           unsigned int link_id)
15578 {
15579         struct netlink_ext_ack *extack = info->extack;
15580         u64 mask;
15581         int err;
15582
15583         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15584                 return -EINVAL;
15585
15586         tid_conf->config_override =
15587                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15588         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15589
15590         if (tid_conf->config_override) {
15591                 if (rdev->ops->reset_tid_config) {
15592                         err = rdev_reset_tid_config(rdev, dev, peer,
15593                                                     tid_conf->tids);
15594                         if (err)
15595                                 return err;
15596                 } else {
15597                         return -EINVAL;
15598                 }
15599         }
15600
15601         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15602                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15603                 tid_conf->noack =
15604                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15605         }
15606
15607         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15608                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15609                 tid_conf->retry_short =
15610                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15611
15612                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15613                         return -EINVAL;
15614         }
15615
15616         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15617                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15618                 tid_conf->retry_long =
15619                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15620
15621                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15622                         return -EINVAL;
15623         }
15624
15625         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15626                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15627                 tid_conf->ampdu =
15628                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15629         }
15630
15631         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15632                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15633                 tid_conf->rtscts =
15634                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15635         }
15636
15637         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15638                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15639                 tid_conf->amsdu =
15640                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15641         }
15642
15643         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15644                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15645
15646                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15647
15648                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15649                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15650                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15651                                                     &tid_conf->txrate_mask, dev,
15652                                                     true, link_id);
15653                         if (err)
15654                                 return err;
15655
15656                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15657                 }
15658                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15659         }
15660
15661         if (peer)
15662                 mask = rdev->wiphy.tid_config_support.peer;
15663         else
15664                 mask = rdev->wiphy.tid_config_support.vif;
15665
15666         if (tid_conf->mask & ~mask) {
15667                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15668                 return -ENOTSUPP;
15669         }
15670
15671         return 0;
15672 }
15673
15674 static int nl80211_set_tid_config(struct sk_buff *skb,
15675                                   struct genl_info *info)
15676 {
15677         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15678         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15679         unsigned int link_id = nl80211_link_id(info->attrs);
15680         struct net_device *dev = info->user_ptr[1];
15681         struct cfg80211_tid_config *tid_config;
15682         struct nlattr *tid;
15683         int conf_idx = 0, rem_conf;
15684         int ret = -EINVAL;
15685         u32 num_conf = 0;
15686
15687         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15688                 return -EINVAL;
15689
15690         if (!rdev->ops->set_tid_config)
15691                 return -EOPNOTSUPP;
15692
15693         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15694                             rem_conf)
15695                 num_conf++;
15696
15697         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15698                              GFP_KERNEL);
15699         if (!tid_config)
15700                 return -ENOMEM;
15701
15702         tid_config->n_tid_conf = num_conf;
15703
15704         if (info->attrs[NL80211_ATTR_MAC])
15705                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15706
15707         wdev_lock(dev->ieee80211_ptr);
15708
15709         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15710                             rem_conf) {
15711                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15712                                        tid, NULL, NULL);
15713
15714                 if (ret)
15715                         goto bad_tid_conf;
15716
15717                 ret = parse_tid_conf(rdev, attrs, dev,
15718                                      &tid_config->tid_conf[conf_idx],
15719                                      info, tid_config->peer, link_id);
15720                 if (ret)
15721                         goto bad_tid_conf;
15722
15723                 conf_idx++;
15724         }
15725
15726         ret = rdev_set_tid_config(rdev, dev, tid_config);
15727
15728 bad_tid_conf:
15729         kfree(tid_config);
15730         wdev_unlock(dev->ieee80211_ptr);
15731         return ret;
15732 }
15733
15734 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15735 {
15736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15737         struct cfg80211_color_change_settings params = {};
15738         struct net_device *dev = info->user_ptr[1];
15739         struct wireless_dev *wdev = dev->ieee80211_ptr;
15740         struct nlattr **tb;
15741         u16 offset;
15742         int err;
15743
15744         if (!rdev->ops->color_change)
15745                 return -EOPNOTSUPP;
15746
15747         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15748                                      NL80211_EXT_FEATURE_BSS_COLOR))
15749                 return -EOPNOTSUPP;
15750
15751         if (wdev->iftype != NL80211_IFTYPE_AP)
15752                 return -EOPNOTSUPP;
15753
15754         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15755             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15756             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15757                 return -EINVAL;
15758
15759         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15760         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15761
15762         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next);
15763         if (err)
15764                 return err;
15765
15766         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15767         if (!tb)
15768                 return -ENOMEM;
15769
15770         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15771                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15772                                nl80211_policy, info->extack);
15773         if (err)
15774                 goto out;
15775
15776         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change);
15777         if (err)
15778                 goto out;
15779
15780         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15781                 err = -EINVAL;
15782                 goto out;
15783         }
15784
15785         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15786                 err = -EINVAL;
15787                 goto out;
15788         }
15789
15790         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15791         if (offset >= params.beacon_color_change.tail_len) {
15792                 err = -EINVAL;
15793                 goto out;
15794         }
15795
15796         if (params.beacon_color_change.tail[offset] != params.count) {
15797                 err = -EINVAL;
15798                 goto out;
15799         }
15800
15801         params.counter_offset_beacon = offset;
15802
15803         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
15804                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
15805                     sizeof(u16)) {
15806                         err = -EINVAL;
15807                         goto out;
15808                 }
15809
15810                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
15811                 if (offset >= params.beacon_color_change.probe_resp_len) {
15812                         err = -EINVAL;
15813                         goto out;
15814                 }
15815
15816                 if (params.beacon_color_change.probe_resp[offset] !=
15817                     params.count) {
15818                         err = -EINVAL;
15819                         goto out;
15820                 }
15821
15822                 params.counter_offset_presp = offset;
15823         }
15824
15825         wdev_lock(wdev);
15826         err = rdev_color_change(rdev, dev, &params);
15827         wdev_unlock(wdev);
15828
15829 out:
15830         kfree(params.beacon_next.mbssid_ies);
15831         kfree(params.beacon_color_change.mbssid_ies);
15832         kfree(tb);
15833         return err;
15834 }
15835
15836 static int nl80211_set_fils_aad(struct sk_buff *skb,
15837                                 struct genl_info *info)
15838 {
15839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15840         struct net_device *dev = info->user_ptr[1];
15841         struct cfg80211_fils_aad fils_aad = {};
15842         u8 *nonces;
15843
15844         if (!info->attrs[NL80211_ATTR_MAC] ||
15845             !info->attrs[NL80211_ATTR_FILS_KEK] ||
15846             !info->attrs[NL80211_ATTR_FILS_NONCES])
15847                 return -EINVAL;
15848
15849         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15850         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
15851         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
15852         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
15853         fils_aad.snonce = nonces;
15854         fils_aad.anonce = nonces + FILS_NONCE_LEN;
15855
15856         return rdev_set_fils_aad(rdev, dev, &fils_aad);
15857 }
15858
15859 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
15860 {
15861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15862         unsigned int link_id = nl80211_link_id(info->attrs);
15863         struct net_device *dev = info->user_ptr[1];
15864         struct wireless_dev *wdev = dev->ieee80211_ptr;
15865         int ret;
15866
15867         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
15868                 return -EINVAL;
15869
15870         switch (wdev->iftype) {
15871         case NL80211_IFTYPE_AP:
15872                 break;
15873         default:
15874                 return -EINVAL;
15875         }
15876
15877         if (!info->attrs[NL80211_ATTR_MAC] ||
15878             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
15879                 return -EINVAL;
15880
15881         wdev_lock(wdev);
15882         wdev->valid_links |= BIT(link_id);
15883         ether_addr_copy(wdev->links[link_id].addr,
15884                         nla_data(info->attrs[NL80211_ATTR_MAC]));
15885
15886         ret = rdev_add_intf_link(rdev, wdev, link_id);
15887         if (ret) {
15888                 wdev->valid_links &= ~BIT(link_id);
15889                 eth_zero_addr(wdev->links[link_id].addr);
15890         }
15891         wdev_unlock(wdev);
15892
15893         return ret;
15894 }
15895
15896 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
15897 {
15898         unsigned int link_id = nl80211_link_id(info->attrs);
15899         struct net_device *dev = info->user_ptr[1];
15900         struct wireless_dev *wdev = dev->ieee80211_ptr;
15901
15902         /* cannot remove if there's no link */
15903         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15904                 return -EINVAL;
15905
15906         switch (wdev->iftype) {
15907         case NL80211_IFTYPE_AP:
15908                 break;
15909         default:
15910                 return -EINVAL;
15911         }
15912
15913         wdev_lock(wdev);
15914         cfg80211_remove_link(wdev, link_id);
15915         wdev_unlock(wdev);
15916
15917         return 0;
15918 }
15919
15920 static int
15921 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
15922                              bool add)
15923 {
15924         struct link_station_parameters params = {};
15925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15926         struct net_device *dev = info->user_ptr[1];
15927         int err;
15928
15929         if ((add && !rdev->ops->add_link_station) ||
15930             (!add && !rdev->ops->mod_link_station))
15931                 return -EOPNOTSUPP;
15932
15933         if (add && !info->attrs[NL80211_ATTR_MAC])
15934                 return -EINVAL;
15935
15936         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
15937                 return -EINVAL;
15938
15939         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
15940                 return -EINVAL;
15941
15942         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
15943
15944         if (info->attrs[NL80211_ATTR_MAC]) {
15945                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
15946                 if (!is_valid_ether_addr(params.link_mac))
15947                         return -EINVAL;
15948         }
15949
15950         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15951                 return -EINVAL;
15952
15953         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
15954
15955         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
15956                 params.supported_rates =
15957                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15958                 params.supported_rates_len =
15959                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15960         }
15961
15962         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
15963                 params.ht_capa =
15964                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
15965
15966         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
15967                 params.vht_capa =
15968                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
15969
15970         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
15971                 params.he_capa =
15972                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15973                 params.he_capa_len =
15974                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15975
15976                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
15977                         params.eht_capa =
15978                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15979                         params.eht_capa_len =
15980                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15981
15982                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
15983                                                         (const u8 *)params.eht_capa,
15984                                                         params.eht_capa_len,
15985                                                         false))
15986                                 return -EINVAL;
15987                 }
15988         }
15989
15990         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
15991                 params.he_6ghz_capa =
15992                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
15993
15994         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
15995                 params.opmode_notif_used = true;
15996                 params.opmode_notif =
15997                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
15998         }
15999
16000         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16001                                                 &params.txpwr_set);
16002         if (err)
16003                 return err;
16004
16005         wdev_lock(dev->ieee80211_ptr);
16006         if (add)
16007                 err = rdev_add_link_station(rdev, dev, &params);
16008         else
16009                 err = rdev_mod_link_station(rdev, dev, &params);
16010         wdev_unlock(dev->ieee80211_ptr);
16011
16012         return err;
16013 }
16014
16015 static int
16016 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16017 {
16018         return nl80211_add_mod_link_station(skb, info, true);
16019 }
16020
16021 static int
16022 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16023 {
16024         return nl80211_add_mod_link_station(skb, info, false);
16025 }
16026
16027 static int
16028 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16029 {
16030         struct link_station_del_parameters params = {};
16031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16032         struct net_device *dev = info->user_ptr[1];
16033         int ret;
16034
16035         if (!rdev->ops->del_link_station)
16036                 return -EOPNOTSUPP;
16037
16038         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16039             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16040                 return -EINVAL;
16041
16042         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16043         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16044
16045         wdev_lock(dev->ieee80211_ptr);
16046         ret = rdev_del_link_station(rdev, dev, &params);
16047         wdev_unlock(dev->ieee80211_ptr);
16048
16049         return ret;
16050 }
16051
16052 #define NL80211_FLAG_NEED_WIPHY         0x01
16053 #define NL80211_FLAG_NEED_NETDEV        0x02
16054 #define NL80211_FLAG_NEED_RTNL          0x04
16055 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16056 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16057                                          NL80211_FLAG_CHECK_NETDEV_UP)
16058 #define NL80211_FLAG_NEED_WDEV          0x10
16059 /* If a netdev is associated, it must be UP, P2P must be started */
16060 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16061                                          NL80211_FLAG_CHECK_NETDEV_UP)
16062 #define NL80211_FLAG_CLEAR_SKB          0x20
16063 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16064 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16065 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16066
16067 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16068         SELECTOR(__sel, NONE, 0) /* must be first */    \
16069         SELECTOR(__sel, WIPHY,                          \
16070                  NL80211_FLAG_NEED_WIPHY)               \
16071         SELECTOR(__sel, WDEV,                           \
16072                  NL80211_FLAG_NEED_WDEV)                \
16073         SELECTOR(__sel, NETDEV,                         \
16074                  NL80211_FLAG_NEED_NETDEV)              \
16075         SELECTOR(__sel, NETDEV_LINK,                    \
16076                  NL80211_FLAG_NEED_NETDEV |             \
16077                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16078         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16079                  NL80211_FLAG_NEED_NETDEV |             \
16080                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16081         SELECTOR(__sel, WIPHY_RTNL,                     \
16082                  NL80211_FLAG_NEED_WIPHY |              \
16083                  NL80211_FLAG_NEED_RTNL)                \
16084         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16085                  NL80211_FLAG_NEED_WIPHY |              \
16086                  NL80211_FLAG_NEED_RTNL |               \
16087                  NL80211_FLAG_NO_WIPHY_MTX)             \
16088         SELECTOR(__sel, WDEV_RTNL,                      \
16089                  NL80211_FLAG_NEED_WDEV |               \
16090                  NL80211_FLAG_NEED_RTNL)                \
16091         SELECTOR(__sel, NETDEV_RTNL,                    \
16092                  NL80211_FLAG_NEED_NETDEV |             \
16093                  NL80211_FLAG_NEED_RTNL)                \
16094         SELECTOR(__sel, NETDEV_UP,                      \
16095                  NL80211_FLAG_NEED_NETDEV_UP)           \
16096         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16097                  NL80211_FLAG_NEED_NETDEV_UP |          \
16098                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16099         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16100                  NL80211_FLAG_NEED_NETDEV_UP |          \
16101                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16102         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16103                  NL80211_FLAG_NEED_NETDEV_UP |          \
16104                  NL80211_FLAG_CLEAR_SKB |               \
16105                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16106         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16107                  NL80211_FLAG_NEED_NETDEV_UP |          \
16108                  NL80211_FLAG_NO_WIPHY_MTX)             \
16109         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16110                  NL80211_FLAG_NEED_NETDEV_UP |          \
16111                  NL80211_FLAG_NO_WIPHY_MTX |            \
16112                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16113         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16114                  NL80211_FLAG_NEED_NETDEV_UP |          \
16115                  NL80211_FLAG_CLEAR_SKB)                \
16116         SELECTOR(__sel, WDEV_UP,                        \
16117                  NL80211_FLAG_NEED_WDEV_UP)             \
16118         SELECTOR(__sel, WDEV_UP_LINK,                   \
16119                  NL80211_FLAG_NEED_WDEV_UP |            \
16120                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16121         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16122                  NL80211_FLAG_NEED_WDEV_UP |            \
16123                  NL80211_FLAG_NEED_RTNL)                \
16124         SELECTOR(__sel, WIPHY_CLEAR,                    \
16125                  NL80211_FLAG_NEED_WIPHY |              \
16126                  NL80211_FLAG_CLEAR_SKB)
16127
16128 enum nl80211_internal_flags_selector {
16129 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16130         INTERNAL_FLAG_SELECTORS(_)
16131 #undef SELECTOR
16132 };
16133
16134 static u32 nl80211_internal_flags[] = {
16135 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16136         INTERNAL_FLAG_SELECTORS(_)
16137 #undef SELECTOR
16138 };
16139
16140 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
16141                             struct genl_info *info)
16142 {
16143         struct cfg80211_registered_device *rdev = NULL;
16144         struct wireless_dev *wdev = NULL;
16145         struct net_device *dev = NULL;
16146         u32 internal_flags;
16147         int err;
16148
16149         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16150                 return -EINVAL;
16151
16152         internal_flags = nl80211_internal_flags[ops->internal_flags];
16153
16154         rtnl_lock();
16155         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16156                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16157                 if (IS_ERR(rdev)) {
16158                         err = PTR_ERR(rdev);
16159                         goto out_unlock;
16160                 }
16161                 info->user_ptr[0] = rdev;
16162         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16163                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16164                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16165                                                   info->attrs);
16166                 if (IS_ERR(wdev)) {
16167                         err = PTR_ERR(wdev);
16168                         goto out_unlock;
16169                 }
16170
16171                 dev = wdev->netdev;
16172                 dev_hold(dev);
16173                 rdev = wiphy_to_rdev(wdev->wiphy);
16174
16175                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16176                         if (!dev) {
16177                                 err = -EINVAL;
16178                                 goto out_unlock;
16179                         }
16180
16181                         info->user_ptr[1] = dev;
16182                 } else {
16183                         info->user_ptr[1] = wdev;
16184                 }
16185
16186                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16187                     !wdev_running(wdev)) {
16188                         err = -ENETDOWN;
16189                         goto out_unlock;
16190                 }
16191
16192                 info->user_ptr[0] = rdev;
16193         }
16194
16195         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16196                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16197
16198                 if (!wdev) {
16199                         err = -EINVAL;
16200                         goto out_unlock;
16201                 }
16202
16203                 /* MLO -> require valid link ID */
16204                 if (wdev->valid_links &&
16205                     (!link_id ||
16206                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16207                         err = -EINVAL;
16208                         goto out_unlock;
16209                 }
16210
16211                 /* non-MLO -> no link ID attribute accepted */
16212                 if (!wdev->valid_links && link_id) {
16213                         err = -EINVAL;
16214                         goto out_unlock;
16215                 }
16216         }
16217
16218         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16219                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16220                     (wdev && wdev->valid_links)) {
16221                         err = -EINVAL;
16222                         goto out_unlock;
16223                 }
16224         }
16225
16226         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16227                 wiphy_lock(&rdev->wiphy);
16228                 /* we keep the mutex locked until post_doit */
16229                 __release(&rdev->wiphy.mtx);
16230         }
16231         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16232                 rtnl_unlock();
16233
16234         return 0;
16235 out_unlock:
16236         rtnl_unlock();
16237         dev_put(dev);
16238         return err;
16239 }
16240
16241 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
16242                               struct genl_info *info)
16243 {
16244         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16245
16246         if (info->user_ptr[1]) {
16247                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16248                         struct wireless_dev *wdev = info->user_ptr[1];
16249
16250                         dev_put(wdev->netdev);
16251                 } else {
16252                         dev_put(info->user_ptr[1]);
16253                 }
16254         }
16255
16256         if (info->user_ptr[0] &&
16257             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16258                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16259
16260                 /* we kept the mutex locked since pre_doit */
16261                 __acquire(&rdev->wiphy.mtx);
16262                 wiphy_unlock(&rdev->wiphy);
16263         }
16264
16265         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16266                 rtnl_unlock();
16267
16268         /* If needed, clear the netlink message payload from the SKB
16269          * as it might contain key data that shouldn't stick around on
16270          * the heap after the SKB is freed. The netlink message header
16271          * is still needed for further processing, so leave it intact.
16272          */
16273         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16274                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16275
16276                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16277         }
16278 }
16279
16280 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16281                                      struct cfg80211_sar_specs *sar_specs,
16282                                      struct nlattr *spec[], int index)
16283 {
16284         u32 range_index, i;
16285
16286         if (!sar_specs || !spec)
16287                 return -EINVAL;
16288
16289         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16290             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16291                 return -EINVAL;
16292
16293         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16294
16295         /* check if range_index exceeds num_freq_ranges */
16296         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16297                 return -EINVAL;
16298
16299         /* check if range_index duplicates */
16300         for (i = 0; i < index; i++) {
16301                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16302                         return -EINVAL;
16303         }
16304
16305         sar_specs->sub_specs[index].power =
16306                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16307
16308         sar_specs->sub_specs[index].freq_range_index = range_index;
16309
16310         return 0;
16311 }
16312
16313 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16314 {
16315         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16316         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16317         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16318         struct cfg80211_sar_specs *sar_spec;
16319         enum nl80211_sar_type type;
16320         struct nlattr *spec_list;
16321         u32 specs;
16322         int rem, err;
16323
16324         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16325                 return -EOPNOTSUPP;
16326
16327         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16328                 return -EINVAL;
16329
16330         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16331                          info->attrs[NL80211_ATTR_SAR_SPEC],
16332                          NULL, NULL);
16333
16334         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16335                 return -EINVAL;
16336
16337         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16338         if (type != rdev->wiphy.sar_capa->type)
16339                 return -EINVAL;
16340
16341         specs = 0;
16342         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16343                 specs++;
16344
16345         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16346                 return -EINVAL;
16347
16348         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16349         if (!sar_spec)
16350                 return -ENOMEM;
16351
16352         sar_spec->type = type;
16353         specs = 0;
16354         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16355                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16356                                  spec_list, NULL, NULL);
16357
16358                 switch (type) {
16359                 case NL80211_SAR_TYPE_POWER:
16360                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16361                                                       spec, specs)) {
16362                                 err = -EINVAL;
16363                                 goto error;
16364                         }
16365                         break;
16366                 default:
16367                         err = -EINVAL;
16368                         goto error;
16369                 }
16370                 specs++;
16371         }
16372
16373         sar_spec->num_sub_specs = specs;
16374
16375         rdev->cur_cmd_info = info;
16376         err = rdev_set_sar_specs(rdev, sar_spec);
16377         rdev->cur_cmd_info = NULL;
16378 error:
16379         kfree(sar_spec);
16380         return err;
16381 }
16382
16383 #define SELECTOR(__sel, name, value) \
16384         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16385 int __missing_selector(void);
16386 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16387
16388 static const struct genl_ops nl80211_ops[] = {
16389         {
16390                 .cmd = NL80211_CMD_GET_WIPHY,
16391                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16392                 .doit = nl80211_get_wiphy,
16393                 .dumpit = nl80211_dump_wiphy,
16394                 .done = nl80211_dump_wiphy_done,
16395                 /* can be retrieved by unprivileged users */
16396                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16397         },
16398 };
16399
16400 static const struct genl_small_ops nl80211_small_ops[] = {
16401         {
16402                 .cmd = NL80211_CMD_SET_WIPHY,
16403                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16404                 .doit = nl80211_set_wiphy,
16405                 .flags = GENL_UNS_ADMIN_PERM,
16406         },
16407         {
16408                 .cmd = NL80211_CMD_GET_INTERFACE,
16409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16410                 .doit = nl80211_get_interface,
16411                 .dumpit = nl80211_dump_interface,
16412                 /* can be retrieved by unprivileged users */
16413                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16414         },
16415         {
16416                 .cmd = NL80211_CMD_SET_INTERFACE,
16417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16418                 .doit = nl80211_set_interface,
16419                 .flags = GENL_UNS_ADMIN_PERM,
16420                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16421                                          NL80211_FLAG_NEED_RTNL),
16422         },
16423         {
16424                 .cmd = NL80211_CMD_NEW_INTERFACE,
16425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16426                 .doit = nl80211_new_interface,
16427                 .flags = GENL_UNS_ADMIN_PERM,
16428                 .internal_flags =
16429                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16430                                NL80211_FLAG_NEED_RTNL |
16431                                /* we take the wiphy mutex later ourselves */
16432                                NL80211_FLAG_NO_WIPHY_MTX),
16433         },
16434         {
16435                 .cmd = NL80211_CMD_DEL_INTERFACE,
16436                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16437                 .doit = nl80211_del_interface,
16438                 .flags = GENL_UNS_ADMIN_PERM,
16439                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16440                                          NL80211_FLAG_NEED_RTNL),
16441         },
16442         {
16443                 .cmd = NL80211_CMD_GET_KEY,
16444                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16445                 .doit = nl80211_get_key,
16446                 .flags = GENL_UNS_ADMIN_PERM,
16447                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16448         },
16449         {
16450                 .cmd = NL80211_CMD_SET_KEY,
16451                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16452                 .doit = nl80211_set_key,
16453                 .flags = GENL_UNS_ADMIN_PERM,
16454                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16455                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16456                                          NL80211_FLAG_CLEAR_SKB),
16457         },
16458         {
16459                 .cmd = NL80211_CMD_NEW_KEY,
16460                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16461                 .doit = nl80211_new_key,
16462                 .flags = GENL_UNS_ADMIN_PERM,
16463                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16464                                          NL80211_FLAG_CLEAR_SKB),
16465         },
16466         {
16467                 .cmd = NL80211_CMD_DEL_KEY,
16468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16469                 .doit = nl80211_del_key,
16470                 .flags = GENL_UNS_ADMIN_PERM,
16471                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16472         },
16473         {
16474                 .cmd = NL80211_CMD_SET_BEACON,
16475                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16476                 .flags = GENL_UNS_ADMIN_PERM,
16477                 .doit = nl80211_set_beacon,
16478                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16479                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16480         },
16481         {
16482                 .cmd = NL80211_CMD_START_AP,
16483                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16484                 .flags = GENL_UNS_ADMIN_PERM,
16485                 .doit = nl80211_start_ap,
16486                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16487                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16488         },
16489         {
16490                 .cmd = NL80211_CMD_STOP_AP,
16491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16492                 .flags = GENL_UNS_ADMIN_PERM,
16493                 .doit = nl80211_stop_ap,
16494                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16495                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16496         },
16497         {
16498                 .cmd = NL80211_CMD_GET_STATION,
16499                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16500                 .doit = nl80211_get_station,
16501                 .dumpit = nl80211_dump_station,
16502                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16503         },
16504         {
16505                 .cmd = NL80211_CMD_SET_STATION,
16506                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16507                 .doit = nl80211_set_station,
16508                 .flags = GENL_UNS_ADMIN_PERM,
16509                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16510         },
16511         {
16512                 .cmd = NL80211_CMD_NEW_STATION,
16513                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16514                 .doit = nl80211_new_station,
16515                 .flags = GENL_UNS_ADMIN_PERM,
16516                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16517         },
16518         {
16519                 .cmd = NL80211_CMD_DEL_STATION,
16520                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16521                 .doit = nl80211_del_station,
16522                 .flags = GENL_UNS_ADMIN_PERM,
16523                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16524         },
16525         {
16526                 .cmd = NL80211_CMD_GET_MPATH,
16527                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16528                 .doit = nl80211_get_mpath,
16529                 .dumpit = nl80211_dump_mpath,
16530                 .flags = GENL_UNS_ADMIN_PERM,
16531                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16532         },
16533         {
16534                 .cmd = NL80211_CMD_GET_MPP,
16535                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16536                 .doit = nl80211_get_mpp,
16537                 .dumpit = nl80211_dump_mpp,
16538                 .flags = GENL_UNS_ADMIN_PERM,
16539                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16540         },
16541         {
16542                 .cmd = NL80211_CMD_SET_MPATH,
16543                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16544                 .doit = nl80211_set_mpath,
16545                 .flags = GENL_UNS_ADMIN_PERM,
16546                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16547         },
16548         {
16549                 .cmd = NL80211_CMD_NEW_MPATH,
16550                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16551                 .doit = nl80211_new_mpath,
16552                 .flags = GENL_UNS_ADMIN_PERM,
16553                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16554         },
16555         {
16556                 .cmd = NL80211_CMD_DEL_MPATH,
16557                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16558                 .doit = nl80211_del_mpath,
16559                 .flags = GENL_UNS_ADMIN_PERM,
16560                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16561         },
16562         {
16563                 .cmd = NL80211_CMD_SET_BSS,
16564                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16565                 .doit = nl80211_set_bss,
16566                 .flags = GENL_UNS_ADMIN_PERM,
16567                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16568         },
16569         {
16570                 .cmd = NL80211_CMD_GET_REG,
16571                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16572                 .doit = nl80211_get_reg_do,
16573                 .dumpit = nl80211_get_reg_dump,
16574                 /* can be retrieved by unprivileged users */
16575         },
16576 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16577         {
16578                 .cmd = NL80211_CMD_SET_REG,
16579                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16580                 .doit = nl80211_set_reg,
16581                 .flags = GENL_ADMIN_PERM,
16582         },
16583 #endif
16584         {
16585                 .cmd = NL80211_CMD_REQ_SET_REG,
16586                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16587                 .doit = nl80211_req_set_reg,
16588                 .flags = GENL_ADMIN_PERM,
16589         },
16590         {
16591                 .cmd = NL80211_CMD_RELOAD_REGDB,
16592                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16593                 .doit = nl80211_reload_regdb,
16594                 .flags = GENL_ADMIN_PERM,
16595         },
16596         {
16597                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16598                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16599                 .doit = nl80211_get_mesh_config,
16600                 /* can be retrieved by unprivileged users */
16601                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16602         },
16603         {
16604                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16605                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16606                 .doit = nl80211_update_mesh_config,
16607                 .flags = GENL_UNS_ADMIN_PERM,
16608                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16609         },
16610         {
16611                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16612                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16613                 .doit = nl80211_trigger_scan,
16614                 .flags = GENL_UNS_ADMIN_PERM,
16615                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16616         },
16617         {
16618                 .cmd = NL80211_CMD_ABORT_SCAN,
16619                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16620                 .doit = nl80211_abort_scan,
16621                 .flags = GENL_UNS_ADMIN_PERM,
16622                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16623         },
16624         {
16625                 .cmd = NL80211_CMD_GET_SCAN,
16626                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16627                 .dumpit = nl80211_dump_scan,
16628         },
16629         {
16630                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16631                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16632                 .doit = nl80211_start_sched_scan,
16633                 .flags = GENL_UNS_ADMIN_PERM,
16634                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16635         },
16636         {
16637                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16638                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16639                 .doit = nl80211_stop_sched_scan,
16640                 .flags = GENL_UNS_ADMIN_PERM,
16641                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16642         },
16643         {
16644                 .cmd = NL80211_CMD_AUTHENTICATE,
16645                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16646                 .doit = nl80211_authenticate,
16647                 .flags = GENL_UNS_ADMIN_PERM,
16648                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16649                                          NL80211_FLAG_CLEAR_SKB),
16650         },
16651         {
16652                 .cmd = NL80211_CMD_ASSOCIATE,
16653                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16654                 .doit = nl80211_associate,
16655                 .flags = GENL_UNS_ADMIN_PERM,
16656                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16657                                          NL80211_FLAG_CLEAR_SKB),
16658         },
16659         {
16660                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16661                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16662                 .doit = nl80211_deauthenticate,
16663                 .flags = GENL_UNS_ADMIN_PERM,
16664                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16665         },
16666         {
16667                 .cmd = NL80211_CMD_DISASSOCIATE,
16668                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16669                 .doit = nl80211_disassociate,
16670                 .flags = GENL_UNS_ADMIN_PERM,
16671                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16672         },
16673         {
16674                 .cmd = NL80211_CMD_JOIN_IBSS,
16675                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16676                 .doit = nl80211_join_ibss,
16677                 .flags = GENL_UNS_ADMIN_PERM,
16678                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16679         },
16680         {
16681                 .cmd = NL80211_CMD_LEAVE_IBSS,
16682                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16683                 .doit = nl80211_leave_ibss,
16684                 .flags = GENL_UNS_ADMIN_PERM,
16685                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16686         },
16687 #ifdef CONFIG_NL80211_TESTMODE
16688         {
16689                 .cmd = NL80211_CMD_TESTMODE,
16690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16691                 .doit = nl80211_testmode_do,
16692                 .dumpit = nl80211_testmode_dump,
16693                 .flags = GENL_UNS_ADMIN_PERM,
16694                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16695         },
16696 #endif
16697         {
16698                 .cmd = NL80211_CMD_CONNECT,
16699                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16700                 .doit = nl80211_connect,
16701                 .flags = GENL_UNS_ADMIN_PERM,
16702                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16703                                          NL80211_FLAG_CLEAR_SKB),
16704         },
16705         {
16706                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16707                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16708                 .doit = nl80211_update_connect_params,
16709                 .flags = GENL_ADMIN_PERM,
16710                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16711                                          NL80211_FLAG_CLEAR_SKB),
16712         },
16713         {
16714                 .cmd = NL80211_CMD_DISCONNECT,
16715                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16716                 .doit = nl80211_disconnect,
16717                 .flags = GENL_UNS_ADMIN_PERM,
16718                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16719         },
16720         {
16721                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16723                 .doit = nl80211_wiphy_netns,
16724                 .flags = GENL_UNS_ADMIN_PERM,
16725                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16726                                          NL80211_FLAG_NEED_RTNL |
16727                                          NL80211_FLAG_NO_WIPHY_MTX),
16728         },
16729         {
16730                 .cmd = NL80211_CMD_GET_SURVEY,
16731                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16732                 .dumpit = nl80211_dump_survey,
16733         },
16734         {
16735                 .cmd = NL80211_CMD_SET_PMKSA,
16736                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16737                 .doit = nl80211_setdel_pmksa,
16738                 .flags = GENL_UNS_ADMIN_PERM,
16739                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16740                                          NL80211_FLAG_CLEAR_SKB),
16741         },
16742         {
16743                 .cmd = NL80211_CMD_DEL_PMKSA,
16744                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16745                 .doit = nl80211_setdel_pmksa,
16746                 .flags = GENL_UNS_ADMIN_PERM,
16747                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16748         },
16749         {
16750                 .cmd = NL80211_CMD_FLUSH_PMKSA,
16751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16752                 .doit = nl80211_flush_pmksa,
16753                 .flags = GENL_UNS_ADMIN_PERM,
16754                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16755         },
16756         {
16757                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
16758                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16759                 .doit = nl80211_remain_on_channel,
16760                 .flags = GENL_UNS_ADMIN_PERM,
16761                 /* FIXME: requiring a link ID here is probably not good */
16762                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16763                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16764         },
16765         {
16766                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16768                 .doit = nl80211_cancel_remain_on_channel,
16769                 .flags = GENL_UNS_ADMIN_PERM,
16770                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16771         },
16772         {
16773                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
16774                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16775                 .doit = nl80211_set_tx_bitrate_mask,
16776                 .flags = GENL_UNS_ADMIN_PERM,
16777                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16778                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16779         },
16780         {
16781                 .cmd = NL80211_CMD_REGISTER_FRAME,
16782                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16783                 .doit = nl80211_register_mgmt,
16784                 .flags = GENL_UNS_ADMIN_PERM,
16785                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16786         },
16787         {
16788                 .cmd = NL80211_CMD_FRAME,
16789                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16790                 .doit = nl80211_tx_mgmt,
16791                 .flags = GENL_UNS_ADMIN_PERM,
16792                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16793         },
16794         {
16795                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
16796                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16797                 .doit = nl80211_tx_mgmt_cancel_wait,
16798                 .flags = GENL_UNS_ADMIN_PERM,
16799                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16800         },
16801         {
16802                 .cmd = NL80211_CMD_SET_POWER_SAVE,
16803                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16804                 .doit = nl80211_set_power_save,
16805                 .flags = GENL_UNS_ADMIN_PERM,
16806                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16807         },
16808         {
16809                 .cmd = NL80211_CMD_GET_POWER_SAVE,
16810                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16811                 .doit = nl80211_get_power_save,
16812                 /* can be retrieved by unprivileged users */
16813                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16814         },
16815         {
16816                 .cmd = NL80211_CMD_SET_CQM,
16817                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16818                 .doit = nl80211_set_cqm,
16819                 .flags = GENL_UNS_ADMIN_PERM,
16820                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16821         },
16822         {
16823                 .cmd = NL80211_CMD_SET_CHANNEL,
16824                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16825                 .doit = nl80211_set_channel,
16826                 .flags = GENL_UNS_ADMIN_PERM,
16827                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16828                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16829         },
16830         {
16831                 .cmd = NL80211_CMD_JOIN_MESH,
16832                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16833                 .doit = nl80211_join_mesh,
16834                 .flags = GENL_UNS_ADMIN_PERM,
16835                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16836         },
16837         {
16838                 .cmd = NL80211_CMD_LEAVE_MESH,
16839                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16840                 .doit = nl80211_leave_mesh,
16841                 .flags = GENL_UNS_ADMIN_PERM,
16842                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16843         },
16844         {
16845                 .cmd = NL80211_CMD_JOIN_OCB,
16846                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16847                 .doit = nl80211_join_ocb,
16848                 .flags = GENL_UNS_ADMIN_PERM,
16849                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16850         },
16851         {
16852                 .cmd = NL80211_CMD_LEAVE_OCB,
16853                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16854                 .doit = nl80211_leave_ocb,
16855                 .flags = GENL_UNS_ADMIN_PERM,
16856                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16857         },
16858 #ifdef CONFIG_PM
16859         {
16860                 .cmd = NL80211_CMD_GET_WOWLAN,
16861                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16862                 .doit = nl80211_get_wowlan,
16863                 /* can be retrieved by unprivileged users */
16864                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16865         },
16866         {
16867                 .cmd = NL80211_CMD_SET_WOWLAN,
16868                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16869                 .doit = nl80211_set_wowlan,
16870                 .flags = GENL_UNS_ADMIN_PERM,
16871                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16872         },
16873 #endif
16874         {
16875                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
16876                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16877                 .doit = nl80211_set_rekey_data,
16878                 .flags = GENL_UNS_ADMIN_PERM,
16879                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16880                                          NL80211_FLAG_CLEAR_SKB),
16881         },
16882         {
16883                 .cmd = NL80211_CMD_TDLS_MGMT,
16884                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16885                 .doit = nl80211_tdls_mgmt,
16886                 .flags = GENL_UNS_ADMIN_PERM,
16887                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16888         },
16889         {
16890                 .cmd = NL80211_CMD_TDLS_OPER,
16891                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16892                 .doit = nl80211_tdls_oper,
16893                 .flags = GENL_UNS_ADMIN_PERM,
16894                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16895         },
16896         {
16897                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
16898                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16899                 .doit = nl80211_register_unexpected_frame,
16900                 .flags = GENL_UNS_ADMIN_PERM,
16901                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16902         },
16903         {
16904                 .cmd = NL80211_CMD_PROBE_CLIENT,
16905                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16906                 .doit = nl80211_probe_client,
16907                 .flags = GENL_UNS_ADMIN_PERM,
16908                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16909         },
16910         {
16911                 .cmd = NL80211_CMD_REGISTER_BEACONS,
16912                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16913                 .doit = nl80211_register_beacons,
16914                 .flags = GENL_UNS_ADMIN_PERM,
16915                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16916         },
16917         {
16918                 .cmd = NL80211_CMD_SET_NOACK_MAP,
16919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16920                 .doit = nl80211_set_noack_map,
16921                 .flags = GENL_UNS_ADMIN_PERM,
16922                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16923         },
16924         {
16925                 .cmd = NL80211_CMD_START_P2P_DEVICE,
16926                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16927                 .doit = nl80211_start_p2p_device,
16928                 .flags = GENL_UNS_ADMIN_PERM,
16929                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16930                                          NL80211_FLAG_NEED_RTNL),
16931         },
16932         {
16933                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
16934                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16935                 .doit = nl80211_stop_p2p_device,
16936                 .flags = GENL_UNS_ADMIN_PERM,
16937                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16938                                          NL80211_FLAG_NEED_RTNL),
16939         },
16940         {
16941                 .cmd = NL80211_CMD_START_NAN,
16942                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16943                 .doit = nl80211_start_nan,
16944                 .flags = GENL_ADMIN_PERM,
16945                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16946                                          NL80211_FLAG_NEED_RTNL),
16947         },
16948         {
16949                 .cmd = NL80211_CMD_STOP_NAN,
16950                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16951                 .doit = nl80211_stop_nan,
16952                 .flags = GENL_ADMIN_PERM,
16953                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16954                                          NL80211_FLAG_NEED_RTNL),
16955         },
16956         {
16957                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
16958                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16959                 .doit = nl80211_nan_add_func,
16960                 .flags = GENL_ADMIN_PERM,
16961                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16962         },
16963         {
16964                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
16965                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16966                 .doit = nl80211_nan_del_func,
16967                 .flags = GENL_ADMIN_PERM,
16968                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16969         },
16970         {
16971                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
16972                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16973                 .doit = nl80211_nan_change_config,
16974                 .flags = GENL_ADMIN_PERM,
16975                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16976         },
16977         {
16978                 .cmd = NL80211_CMD_SET_MCAST_RATE,
16979                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16980                 .doit = nl80211_set_mcast_rate,
16981                 .flags = GENL_UNS_ADMIN_PERM,
16982                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16983         },
16984         {
16985                 .cmd = NL80211_CMD_SET_MAC_ACL,
16986                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16987                 .doit = nl80211_set_mac_acl,
16988                 .flags = GENL_UNS_ADMIN_PERM,
16989                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16990                                          NL80211_FLAG_MLO_UNSUPPORTED),
16991         },
16992         {
16993                 .cmd = NL80211_CMD_RADAR_DETECT,
16994                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16995                 .doit = nl80211_start_radar_detection,
16996                 .flags = GENL_UNS_ADMIN_PERM,
16997                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16998                                          NL80211_FLAG_NO_WIPHY_MTX |
16999                                          NL80211_FLAG_MLO_UNSUPPORTED),
17000         },
17001         {
17002                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17003                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17004                 .doit = nl80211_get_protocol_features,
17005         },
17006         {
17007                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17009                 .doit = nl80211_update_ft_ies,
17010                 .flags = GENL_UNS_ADMIN_PERM,
17011                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17012         },
17013         {
17014                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17015                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17016                 .doit = nl80211_crit_protocol_start,
17017                 .flags = GENL_UNS_ADMIN_PERM,
17018                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17019         },
17020         {
17021                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17022                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17023                 .doit = nl80211_crit_protocol_stop,
17024                 .flags = GENL_UNS_ADMIN_PERM,
17025                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17026         },
17027         {
17028                 .cmd = NL80211_CMD_GET_COALESCE,
17029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17030                 .doit = nl80211_get_coalesce,
17031                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17032         },
17033         {
17034                 .cmd = NL80211_CMD_SET_COALESCE,
17035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17036                 .doit = nl80211_set_coalesce,
17037                 .flags = GENL_UNS_ADMIN_PERM,
17038                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17039         },
17040         {
17041                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17043                 .doit = nl80211_channel_switch,
17044                 .flags = GENL_UNS_ADMIN_PERM,
17045                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17046                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17047         },
17048         {
17049                 .cmd = NL80211_CMD_VENDOR,
17050                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17051                 .doit = nl80211_vendor_cmd,
17052                 .dumpit = nl80211_vendor_cmd_dump,
17053                 .flags = GENL_UNS_ADMIN_PERM,
17054                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17055                                          NL80211_FLAG_CLEAR_SKB),
17056         },
17057         {
17058                 .cmd = NL80211_CMD_SET_QOS_MAP,
17059                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17060                 .doit = nl80211_set_qos_map,
17061                 .flags = GENL_UNS_ADMIN_PERM,
17062                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17063         },
17064         {
17065                 .cmd = NL80211_CMD_ADD_TX_TS,
17066                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17067                 .doit = nl80211_add_tx_ts,
17068                 .flags = GENL_UNS_ADMIN_PERM,
17069                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17070                                          NL80211_FLAG_MLO_UNSUPPORTED),
17071         },
17072         {
17073                 .cmd = NL80211_CMD_DEL_TX_TS,
17074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17075                 .doit = nl80211_del_tx_ts,
17076                 .flags = GENL_UNS_ADMIN_PERM,
17077                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17078         },
17079         {
17080                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17082                 .doit = nl80211_tdls_channel_switch,
17083                 .flags = GENL_UNS_ADMIN_PERM,
17084                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17085         },
17086         {
17087                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17089                 .doit = nl80211_tdls_cancel_channel_switch,
17090                 .flags = GENL_UNS_ADMIN_PERM,
17091                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17092         },
17093         {
17094                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17095                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17096                 .doit = nl80211_set_multicast_to_unicast,
17097                 .flags = GENL_UNS_ADMIN_PERM,
17098                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17099         },
17100         {
17101                 .cmd = NL80211_CMD_SET_PMK,
17102                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17103                 .doit = nl80211_set_pmk,
17104                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17105                                          NL80211_FLAG_CLEAR_SKB),
17106         },
17107         {
17108                 .cmd = NL80211_CMD_DEL_PMK,
17109                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17110                 .doit = nl80211_del_pmk,
17111                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17112         },
17113         {
17114                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17115                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17116                 .doit = nl80211_external_auth,
17117                 .flags = GENL_ADMIN_PERM,
17118                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17119         },
17120         {
17121                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17122                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17123                 .doit = nl80211_tx_control_port,
17124                 .flags = GENL_UNS_ADMIN_PERM,
17125                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17126         },
17127         {
17128                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17129                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17130                 .doit = nl80211_get_ftm_responder_stats,
17131                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17132                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17133         },
17134         {
17135                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17136                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17137                 .doit = nl80211_pmsr_start,
17138                 .flags = GENL_UNS_ADMIN_PERM,
17139                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17140         },
17141         {
17142                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17143                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17144                 .doit = nl80211_notify_radar_detection,
17145                 .flags = GENL_UNS_ADMIN_PERM,
17146                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17147         },
17148         {
17149                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17150                 .doit = nl80211_update_owe_info,
17151                 .flags = GENL_ADMIN_PERM,
17152                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17153         },
17154         {
17155                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17156                 .doit = nl80211_probe_mesh_link,
17157                 .flags = GENL_UNS_ADMIN_PERM,
17158                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17159         },
17160         {
17161                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17162                 .doit = nl80211_set_tid_config,
17163                 .flags = GENL_UNS_ADMIN_PERM,
17164                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17165                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17166         },
17167         {
17168                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17169                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17170                 .doit = nl80211_set_sar_specs,
17171                 .flags = GENL_UNS_ADMIN_PERM,
17172                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17173                                          NL80211_FLAG_NEED_RTNL),
17174         },
17175         {
17176                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17177                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17178                 .doit = nl80211_color_change,
17179                 .flags = GENL_UNS_ADMIN_PERM,
17180                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17181         },
17182         {
17183                 .cmd = NL80211_CMD_SET_FILS_AAD,
17184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17185                 .doit = nl80211_set_fils_aad,
17186                 .flags = GENL_UNS_ADMIN_PERM,
17187                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17188         },
17189         {
17190                 .cmd = NL80211_CMD_ADD_LINK,
17191                 .doit = nl80211_add_link,
17192                 .flags = GENL_UNS_ADMIN_PERM,
17193                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17194         },
17195         {
17196                 .cmd = NL80211_CMD_REMOVE_LINK,
17197                 .doit = nl80211_remove_link,
17198                 .flags = GENL_UNS_ADMIN_PERM,
17199                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17200                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17201         },
17202         {
17203                 .cmd = NL80211_CMD_ADD_LINK_STA,
17204                 .doit = nl80211_add_link_station,
17205                 .flags = GENL_UNS_ADMIN_PERM,
17206                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17207                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17208         },
17209         {
17210                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17211                 .doit = nl80211_modify_link_station,
17212                 .flags = GENL_UNS_ADMIN_PERM,
17213                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17214                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17215         },
17216         {
17217                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17218                 .doit = nl80211_remove_link_station,
17219                 .flags = GENL_UNS_ADMIN_PERM,
17220                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17221                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17222         },
17223 };
17224
17225 static struct genl_family nl80211_fam __ro_after_init = {
17226         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17227         .hdrsize = 0,                   /* no private header */
17228         .version = 1,                   /* no particular meaning now */
17229         .maxattr = NL80211_ATTR_MAX,
17230         .policy = nl80211_policy,
17231         .netnsok = true,
17232         .pre_doit = nl80211_pre_doit,
17233         .post_doit = nl80211_post_doit,
17234         .module = THIS_MODULE,
17235         .ops = nl80211_ops,
17236         .n_ops = ARRAY_SIZE(nl80211_ops),
17237         .small_ops = nl80211_small_ops,
17238         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17239         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17240         .mcgrps = nl80211_mcgrps,
17241         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17242         .parallel_ops = true,
17243 };
17244
17245 /* notification functions */
17246
17247 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17248                           enum nl80211_commands cmd)
17249 {
17250         struct sk_buff *msg;
17251         struct nl80211_dump_wiphy_state state = {};
17252
17253         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17254                 cmd != NL80211_CMD_DEL_WIPHY);
17255
17256         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17257         if (!msg)
17258                 return;
17259
17260         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17261                 nlmsg_free(msg);
17262                 return;
17263         }
17264
17265         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17266                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17267 }
17268
17269 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17270                                 struct wireless_dev *wdev,
17271                                 enum nl80211_commands cmd)
17272 {
17273         struct sk_buff *msg;
17274
17275         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17276         if (!msg)
17277                 return;
17278
17279         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17280                 nlmsg_free(msg);
17281                 return;
17282         }
17283
17284         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17285                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17286 }
17287
17288 static int nl80211_add_scan_req(struct sk_buff *msg,
17289                                 struct cfg80211_registered_device *rdev)
17290 {
17291         struct cfg80211_scan_request *req = rdev->scan_req;
17292         struct nlattr *nest;
17293         int i;
17294         struct cfg80211_scan_info *info;
17295
17296         if (WARN_ON(!req))
17297                 return 0;
17298
17299         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17300         if (!nest)
17301                 goto nla_put_failure;
17302         for (i = 0; i < req->n_ssids; i++) {
17303                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17304                         goto nla_put_failure;
17305         }
17306         nla_nest_end(msg, nest);
17307
17308         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17309                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17310                 if (!nest)
17311                         goto nla_put_failure;
17312                 for (i = 0; i < req->n_channels; i++) {
17313                         if (nla_put_u32(msg, i,
17314                                    ieee80211_channel_to_khz(req->channels[i])))
17315                                 goto nla_put_failure;
17316                 }
17317                 nla_nest_end(msg, nest);
17318         } else {
17319                 nest = nla_nest_start_noflag(msg,
17320                                              NL80211_ATTR_SCAN_FREQUENCIES);
17321                 if (!nest)
17322                         goto nla_put_failure;
17323                 for (i = 0; i < req->n_channels; i++) {
17324                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17325                                 goto nla_put_failure;
17326                 }
17327                 nla_nest_end(msg, nest);
17328         }
17329
17330         if (req->ie &&
17331             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17332                 goto nla_put_failure;
17333
17334         if (req->flags &&
17335             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17336                 goto nla_put_failure;
17337
17338         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17339                 &rdev->scan_req->info;
17340         if (info->scan_start_tsf &&
17341             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17342                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17343              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17344                      info->tsf_bssid)))
17345                 goto nla_put_failure;
17346
17347         return 0;
17348  nla_put_failure:
17349         return -ENOBUFS;
17350 }
17351
17352 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17353                                  struct cfg80211_registered_device *rdev,
17354                                  struct wireless_dev *wdev,
17355                                  u32 portid, u32 seq, int flags,
17356                                  u32 cmd)
17357 {
17358         void *hdr;
17359
17360         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17361         if (!hdr)
17362                 return -1;
17363
17364         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17365             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17366                                          wdev->netdev->ifindex)) ||
17367             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17368                               NL80211_ATTR_PAD))
17369                 goto nla_put_failure;
17370
17371         /* ignore errors and send incomplete event anyway */
17372         nl80211_add_scan_req(msg, rdev);
17373
17374         genlmsg_end(msg, hdr);
17375         return 0;
17376
17377  nla_put_failure:
17378         genlmsg_cancel(msg, hdr);
17379         return -EMSGSIZE;
17380 }
17381
17382 static int
17383 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17384                             struct cfg80211_sched_scan_request *req, u32 cmd)
17385 {
17386         void *hdr;
17387
17388         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17389         if (!hdr)
17390                 return -1;
17391
17392         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17393                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17394             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17395             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17396                               NL80211_ATTR_PAD))
17397                 goto nla_put_failure;
17398
17399         genlmsg_end(msg, hdr);
17400         return 0;
17401
17402  nla_put_failure:
17403         genlmsg_cancel(msg, hdr);
17404         return -EMSGSIZE;
17405 }
17406
17407 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17408                              struct wireless_dev *wdev)
17409 {
17410         struct sk_buff *msg;
17411
17412         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17413         if (!msg)
17414                 return;
17415
17416         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17417                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17418                 nlmsg_free(msg);
17419                 return;
17420         }
17421
17422         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17423                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17424 }
17425
17426 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17427                                        struct wireless_dev *wdev, bool aborted)
17428 {
17429         struct sk_buff *msg;
17430
17431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17432         if (!msg)
17433                 return NULL;
17434
17435         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17436                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17437                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17438                 nlmsg_free(msg);
17439                 return NULL;
17440         }
17441
17442         return msg;
17443 }
17444
17445 /* send message created by nl80211_build_scan_msg() */
17446 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17447                            struct sk_buff *msg)
17448 {
17449         if (!msg)
17450                 return;
17451
17452         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17453                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17454 }
17455
17456 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17457 {
17458         struct sk_buff *msg;
17459
17460         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17461         if (!msg)
17462                 return;
17463
17464         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17465                 nlmsg_free(msg);
17466                 return;
17467         }
17468
17469         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17470                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17471 }
17472
17473 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17474                                           struct regulatory_request *request)
17475 {
17476         /* Userspace can always count this one always being set */
17477         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17478                 goto nla_put_failure;
17479
17480         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17481                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17482                                NL80211_REGDOM_TYPE_WORLD))
17483                         goto nla_put_failure;
17484         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17485                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17486                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17487                         goto nla_put_failure;
17488         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17489                    request->intersect) {
17490                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17491                                NL80211_REGDOM_TYPE_INTERSECTION))
17492                         goto nla_put_failure;
17493         } else {
17494                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17495                                NL80211_REGDOM_TYPE_COUNTRY) ||
17496                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17497                                    request->alpha2))
17498                         goto nla_put_failure;
17499         }
17500
17501         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17502                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17503
17504                 if (wiphy &&
17505                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17506                         goto nla_put_failure;
17507
17508                 if (wiphy &&
17509                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17510                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17511                         goto nla_put_failure;
17512         }
17513
17514         return true;
17515
17516 nla_put_failure:
17517         return false;
17518 }
17519
17520 /*
17521  * This can happen on global regulatory changes or device specific settings
17522  * based on custom regulatory domains.
17523  */
17524 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17525                                      struct regulatory_request *request)
17526 {
17527         struct sk_buff *msg;
17528         void *hdr;
17529
17530         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17531         if (!msg)
17532                 return;
17533
17534         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17535         if (!hdr)
17536                 goto nla_put_failure;
17537
17538         if (!nl80211_reg_change_event_fill(msg, request))
17539                 goto nla_put_failure;
17540
17541         genlmsg_end(msg, hdr);
17542
17543         rcu_read_lock();
17544         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17545                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17546         rcu_read_unlock();
17547
17548         return;
17549
17550 nla_put_failure:
17551         nlmsg_free(msg);
17552 }
17553
17554 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17555                                     struct net_device *netdev,
17556                                     const u8 *buf, size_t len,
17557                                     enum nl80211_commands cmd, gfp_t gfp,
17558                                     int uapsd_queues, const u8 *req_ies,
17559                                     size_t req_ies_len, bool reconnect)
17560 {
17561         struct sk_buff *msg;
17562         void *hdr;
17563
17564         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17565         if (!msg)
17566                 return;
17567
17568         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17569         if (!hdr) {
17570                 nlmsg_free(msg);
17571                 return;
17572         }
17573
17574         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17575             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17576             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17577             (req_ies &&
17578              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17579                 goto nla_put_failure;
17580
17581         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17582                 goto nla_put_failure;
17583
17584         if (uapsd_queues >= 0) {
17585                 struct nlattr *nla_wmm =
17586                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17587                 if (!nla_wmm)
17588                         goto nla_put_failure;
17589
17590                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17591                                uapsd_queues))
17592                         goto nla_put_failure;
17593
17594                 nla_nest_end(msg, nla_wmm);
17595         }
17596
17597         genlmsg_end(msg, hdr);
17598
17599         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17600                                 NL80211_MCGRP_MLME, gfp);
17601         return;
17602
17603  nla_put_failure:
17604         nlmsg_free(msg);
17605 }
17606
17607 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17608                           struct net_device *netdev, const u8 *buf,
17609                           size_t len, gfp_t gfp)
17610 {
17611         nl80211_send_mlme_event(rdev, netdev, buf, len,
17612                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17613                                 false);
17614 }
17615
17616 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17617                            struct net_device *netdev,
17618                            struct cfg80211_rx_assoc_resp *data)
17619 {
17620         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17621                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17622                                 data->uapsd_queues,
17623                                 data->req_ies, data->req_ies_len, false);
17624 }
17625
17626 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17627                          struct net_device *netdev, const u8 *buf,
17628                          size_t len, bool reconnect, gfp_t gfp)
17629 {
17630         nl80211_send_mlme_event(rdev, netdev, buf, len,
17631                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17632                                 reconnect);
17633 }
17634
17635 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17636                            struct net_device *netdev, const u8 *buf,
17637                            size_t len, bool reconnect, gfp_t gfp)
17638 {
17639         nl80211_send_mlme_event(rdev, netdev, buf, len,
17640                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17641                                 reconnect);
17642 }
17643
17644 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17645                                   size_t len)
17646 {
17647         struct wireless_dev *wdev = dev->ieee80211_ptr;
17648         struct wiphy *wiphy = wdev->wiphy;
17649         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17650         const struct ieee80211_mgmt *mgmt = (void *)buf;
17651         u32 cmd;
17652
17653         if (WARN_ON(len < 2))
17654                 return;
17655
17656         if (ieee80211_is_deauth(mgmt->frame_control)) {
17657                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17658         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17659                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17660         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17661                 if (wdev->unprot_beacon_reported &&
17662                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17663                         return;
17664                 cmd = NL80211_CMD_UNPROT_BEACON;
17665                 wdev->unprot_beacon_reported = jiffies;
17666         } else {
17667                 return;
17668         }
17669
17670         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17671         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17672                                 NULL, 0, false);
17673 }
17674 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17675
17676 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17677                                       struct net_device *netdev, int cmd,
17678                                       const u8 *addr, gfp_t gfp)
17679 {
17680         struct sk_buff *msg;
17681         void *hdr;
17682
17683         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17684         if (!msg)
17685                 return;
17686
17687         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17688         if (!hdr) {
17689                 nlmsg_free(msg);
17690                 return;
17691         }
17692
17693         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17694             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17695             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17696             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17697                 goto nla_put_failure;
17698
17699         genlmsg_end(msg, hdr);
17700
17701         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17702                                 NL80211_MCGRP_MLME, gfp);
17703         return;
17704
17705  nla_put_failure:
17706         nlmsg_free(msg);
17707 }
17708
17709 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17710                                struct net_device *netdev, const u8 *addr,
17711                                gfp_t gfp)
17712 {
17713         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17714                                   addr, gfp);
17715 }
17716
17717 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17718                                 struct net_device *netdev, const u8 *addr,
17719                                 gfp_t gfp)
17720 {
17721         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17722                                   addr, gfp);
17723 }
17724
17725 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
17726                                  struct net_device *netdev,
17727                                  struct cfg80211_connect_resp_params *cr,
17728                                  gfp_t gfp)
17729 {
17730         struct sk_buff *msg;
17731         void *hdr;
17732         unsigned int link;
17733         size_t link_info_size = 0;
17734         const u8 *connected_addr = cr->valid_links ?
17735                                    cr->ap_mld_addr : cr->links[0].bssid;
17736
17737         if (cr->valid_links) {
17738                 for_each_valid_link(cr, link) {
17739                         /* Nested attribute header */
17740                         link_info_size += NLA_HDRLEN;
17741                         /* Link ID */
17742                         link_info_size += nla_total_size(sizeof(u8));
17743                         link_info_size += cr->links[link].addr ?
17744                                           nla_total_size(ETH_ALEN) : 0;
17745                         link_info_size += (cr->links[link].bssid ||
17746                                            cr->links[link].bss) ?
17747                                           nla_total_size(ETH_ALEN) : 0;
17748                 }
17749         }
17750
17751         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
17752                         cr->fils.kek_len + cr->fils.pmk_len +
17753                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
17754                         gfp);
17755         if (!msg)
17756                 return;
17757
17758         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
17759         if (!hdr) {
17760                 nlmsg_free(msg);
17761                 return;
17762         }
17763
17764         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17765             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17766             (connected_addr &&
17767              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
17768             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17769                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
17770                         cr->status) ||
17771             (cr->status < 0 &&
17772              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17773               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
17774                           cr->timeout_reason))) ||
17775             (cr->req_ie &&
17776              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
17777             (cr->resp_ie &&
17778              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
17779                      cr->resp_ie)) ||
17780             (cr->fils.update_erp_next_seq_num &&
17781              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17782                          cr->fils.erp_next_seq_num)) ||
17783             (cr->status == WLAN_STATUS_SUCCESS &&
17784              ((cr->fils.kek &&
17785                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
17786                        cr->fils.kek)) ||
17787               (cr->fils.pmk &&
17788                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
17789               (cr->fils.pmkid &&
17790                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
17791                 goto nla_put_failure;
17792
17793         if (cr->valid_links) {
17794                 int i = 1;
17795                 struct nlattr *nested;
17796
17797                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17798                 if (!nested)
17799                         goto nla_put_failure;
17800
17801                 for_each_valid_link(cr, link) {
17802                         struct nlattr *nested_mlo_links;
17803                         const u8 *bssid = cr->links[link].bss ?
17804                                           cr->links[link].bss->bssid :
17805                                           cr->links[link].bssid;
17806
17807                         nested_mlo_links = nla_nest_start(msg, i);
17808                         if (!nested_mlo_links)
17809                                 goto nla_put_failure;
17810
17811                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17812                             (bssid &&
17813                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17814                             (cr->links[link].addr &&
17815                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17816                                      cr->links[link].addr)))
17817                                 goto nla_put_failure;
17818
17819                         nla_nest_end(msg, nested_mlo_links);
17820                         i++;
17821                 }
17822                 nla_nest_end(msg, nested);
17823         }
17824
17825         genlmsg_end(msg, hdr);
17826
17827         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17828                                 NL80211_MCGRP_MLME, gfp);
17829         return;
17830
17831  nla_put_failure:
17832         nlmsg_free(msg);
17833 }
17834
17835 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
17836                          struct net_device *netdev,
17837                          struct cfg80211_roam_info *info, gfp_t gfp)
17838 {
17839         struct sk_buff *msg;
17840         void *hdr;
17841         size_t link_info_size = 0;
17842         unsigned int link;
17843         const u8 *connected_addr = info->ap_mld_addr ?
17844                                    info->ap_mld_addr :
17845                                    (info->links[0].bss ?
17846                                     info->links[0].bss->bssid :
17847                                     info->links[0].bssid);
17848
17849         if (info->valid_links) {
17850                 for_each_valid_link(info, link) {
17851                         /* Nested attribute header */
17852                         link_info_size += NLA_HDRLEN;
17853                         /* Link ID */
17854                         link_info_size += nla_total_size(sizeof(u8));
17855                         link_info_size += info->links[link].addr ?
17856                                           nla_total_size(ETH_ALEN) : 0;
17857                         link_info_size += (info->links[link].bssid ||
17858                                            info->links[link].bss) ?
17859                                           nla_total_size(ETH_ALEN) : 0;
17860                 }
17861         }
17862
17863         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
17864                         info->fils.kek_len + info->fils.pmk_len +
17865                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
17866                         link_info_size, gfp);
17867         if (!msg)
17868                 return;
17869
17870         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
17871         if (!hdr) {
17872                 nlmsg_free(msg);
17873                 return;
17874         }
17875
17876         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17877             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17878             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
17879             (info->req_ie &&
17880              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
17881                      info->req_ie)) ||
17882             (info->resp_ie &&
17883              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
17884                      info->resp_ie)) ||
17885             (info->fils.update_erp_next_seq_num &&
17886              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17887                          info->fils.erp_next_seq_num)) ||
17888             (info->fils.kek &&
17889              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
17890                      info->fils.kek)) ||
17891             (info->fils.pmk &&
17892              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
17893             (info->fils.pmkid &&
17894              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
17895                 goto nla_put_failure;
17896
17897         if (info->valid_links) {
17898                 int i = 1;
17899                 struct nlattr *nested;
17900
17901                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17902                 if (!nested)
17903                         goto nla_put_failure;
17904
17905                 for_each_valid_link(info, link) {
17906                         struct nlattr *nested_mlo_links;
17907                         const u8 *bssid = info->links[link].bss ?
17908                                           info->links[link].bss->bssid :
17909                                           info->links[link].bssid;
17910
17911                         nested_mlo_links = nla_nest_start(msg, i);
17912                         if (!nested_mlo_links)
17913                                 goto nla_put_failure;
17914
17915                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17916                             (bssid &&
17917                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17918                             (info->links[link].addr &&
17919                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17920                                      info->links[link].addr)))
17921                                 goto nla_put_failure;
17922
17923                         nla_nest_end(msg, nested_mlo_links);
17924                         i++;
17925                 }
17926                 nla_nest_end(msg, nested);
17927         }
17928
17929         genlmsg_end(msg, hdr);
17930
17931         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17932                                 NL80211_MCGRP_MLME, gfp);
17933         return;
17934
17935  nla_put_failure:
17936         nlmsg_free(msg);
17937 }
17938
17939 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
17940                                   struct net_device *netdev, const u8 *bssid)
17941 {
17942         struct sk_buff *msg;
17943         void *hdr;
17944
17945         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17946         if (!msg)
17947                 return;
17948
17949         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
17950         if (!hdr) {
17951                 nlmsg_free(msg);
17952                 return;
17953         }
17954
17955         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17956             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17957             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17958                 goto nla_put_failure;
17959
17960         genlmsg_end(msg, hdr);
17961
17962         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17963                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17964         return;
17965
17966  nla_put_failure:
17967         nlmsg_free(msg);
17968 }
17969
17970 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
17971                                struct net_device *netdev, u16 reason,
17972                                const u8 *ie, size_t ie_len, bool from_ap)
17973 {
17974         struct sk_buff *msg;
17975         void *hdr;
17976
17977         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
17978         if (!msg)
17979                 return;
17980
17981         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
17982         if (!hdr) {
17983                 nlmsg_free(msg);
17984                 return;
17985         }
17986
17987         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17988             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17989             (reason &&
17990              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
17991             (from_ap &&
17992              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
17993             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
17994                 goto nla_put_failure;
17995
17996         genlmsg_end(msg, hdr);
17997
17998         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17999                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18000         return;
18001
18002  nla_put_failure:
18003         nlmsg_free(msg);
18004 }
18005
18006 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18007                              struct net_device *netdev, const u8 *bssid,
18008                              gfp_t gfp)
18009 {
18010         struct sk_buff *msg;
18011         void *hdr;
18012
18013         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18014         if (!msg)
18015                 return;
18016
18017         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18018         if (!hdr) {
18019                 nlmsg_free(msg);
18020                 return;
18021         }
18022
18023         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18024             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18025             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18026                 goto nla_put_failure;
18027
18028         genlmsg_end(msg, hdr);
18029
18030         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18031                                 NL80211_MCGRP_MLME, gfp);
18032         return;
18033
18034  nla_put_failure:
18035         nlmsg_free(msg);
18036 }
18037
18038 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18039                                         const u8 *ie, u8 ie_len,
18040                                         int sig_dbm, gfp_t gfp)
18041 {
18042         struct wireless_dev *wdev = dev->ieee80211_ptr;
18043         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18044         struct sk_buff *msg;
18045         void *hdr;
18046
18047         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18048                 return;
18049
18050         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18051
18052         msg = nlmsg_new(100 + ie_len, gfp);
18053         if (!msg)
18054                 return;
18055
18056         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18057         if (!hdr) {
18058                 nlmsg_free(msg);
18059                 return;
18060         }
18061
18062         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18063             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18064             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18065             (ie_len && ie &&
18066              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18067             (sig_dbm &&
18068              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18069                 goto nla_put_failure;
18070
18071         genlmsg_end(msg, hdr);
18072
18073         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18074                                 NL80211_MCGRP_MLME, gfp);
18075         return;
18076
18077  nla_put_failure:
18078         nlmsg_free(msg);
18079 }
18080 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18081
18082 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18083                                  struct net_device *netdev, const u8 *addr,
18084                                  enum nl80211_key_type key_type, int key_id,
18085                                  const u8 *tsc, gfp_t gfp)
18086 {
18087         struct sk_buff *msg;
18088         void *hdr;
18089
18090         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18091         if (!msg)
18092                 return;
18093
18094         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18095         if (!hdr) {
18096                 nlmsg_free(msg);
18097                 return;
18098         }
18099
18100         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18101             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18102             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18103             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18104             (key_id != -1 &&
18105              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18106             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18107                 goto nla_put_failure;
18108
18109         genlmsg_end(msg, hdr);
18110
18111         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18112                                 NL80211_MCGRP_MLME, gfp);
18113         return;
18114
18115  nla_put_failure:
18116         nlmsg_free(msg);
18117 }
18118
18119 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18120                                     struct ieee80211_channel *channel_before,
18121                                     struct ieee80211_channel *channel_after)
18122 {
18123         struct sk_buff *msg;
18124         void *hdr;
18125         struct nlattr *nl_freq;
18126
18127         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18128         if (!msg)
18129                 return;
18130
18131         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18132         if (!hdr) {
18133                 nlmsg_free(msg);
18134                 return;
18135         }
18136
18137         /*
18138          * Since we are applying the beacon hint to a wiphy we know its
18139          * wiphy_idx is valid
18140          */
18141         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18142                 goto nla_put_failure;
18143
18144         /* Before */
18145         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18146         if (!nl_freq)
18147                 goto nla_put_failure;
18148
18149         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18150                 goto nla_put_failure;
18151         nla_nest_end(msg, nl_freq);
18152
18153         /* After */
18154         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18155         if (!nl_freq)
18156                 goto nla_put_failure;
18157
18158         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18159                 goto nla_put_failure;
18160         nla_nest_end(msg, nl_freq);
18161
18162         genlmsg_end(msg, hdr);
18163
18164         rcu_read_lock();
18165         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18166                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18167         rcu_read_unlock();
18168
18169         return;
18170
18171 nla_put_failure:
18172         nlmsg_free(msg);
18173 }
18174
18175 static void nl80211_send_remain_on_chan_event(
18176         int cmd, struct cfg80211_registered_device *rdev,
18177         struct wireless_dev *wdev, u64 cookie,
18178         struct ieee80211_channel *chan,
18179         unsigned int duration, gfp_t gfp)
18180 {
18181         struct sk_buff *msg;
18182         void *hdr;
18183
18184         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18185         if (!msg)
18186                 return;
18187
18188         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18189         if (!hdr) {
18190                 nlmsg_free(msg);
18191                 return;
18192         }
18193
18194         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18195             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18196                                          wdev->netdev->ifindex)) ||
18197             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18198                               NL80211_ATTR_PAD) ||
18199             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18200             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18201                         NL80211_CHAN_NO_HT) ||
18202             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18203                               NL80211_ATTR_PAD))
18204                 goto nla_put_failure;
18205
18206         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18207             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18208                 goto nla_put_failure;
18209
18210         genlmsg_end(msg, hdr);
18211
18212         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18213                                 NL80211_MCGRP_MLME, gfp);
18214         return;
18215
18216  nla_put_failure:
18217         nlmsg_free(msg);
18218 }
18219
18220 void cfg80211_assoc_comeback(struct net_device *netdev,
18221                              const u8 *ap_addr, u32 timeout)
18222 {
18223         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18224         struct wiphy *wiphy = wdev->wiphy;
18225         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18226         struct sk_buff *msg;
18227         void *hdr;
18228
18229         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18230
18231         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18232         if (!msg)
18233                 return;
18234
18235         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18236         if (!hdr) {
18237                 nlmsg_free(msg);
18238                 return;
18239         }
18240
18241         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18242             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18243             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18244             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18245                 goto nla_put_failure;
18246
18247         genlmsg_end(msg, hdr);
18248
18249         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18250                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18251         return;
18252
18253  nla_put_failure:
18254         nlmsg_free(msg);
18255 }
18256 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18257
18258 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18259                                struct ieee80211_channel *chan,
18260                                unsigned int duration, gfp_t gfp)
18261 {
18262         struct wiphy *wiphy = wdev->wiphy;
18263         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18264
18265         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18266         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18267                                           rdev, wdev, cookie, chan,
18268                                           duration, gfp);
18269 }
18270 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18271
18272 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18273                                         struct ieee80211_channel *chan,
18274                                         gfp_t gfp)
18275 {
18276         struct wiphy *wiphy = wdev->wiphy;
18277         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18278
18279         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18280         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18281                                           rdev, wdev, cookie, chan, 0, gfp);
18282 }
18283 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18284
18285 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18286                                         struct ieee80211_channel *chan,
18287                                         gfp_t gfp)
18288 {
18289         struct wiphy *wiphy = wdev->wiphy;
18290         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18291
18292         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18293         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18294                                           rdev, wdev, cookie, chan, 0, gfp);
18295 }
18296 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18297
18298 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18299                       struct station_info *sinfo, gfp_t gfp)
18300 {
18301         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18302         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18303         struct sk_buff *msg;
18304
18305         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18306
18307         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18308         if (!msg)
18309                 return;
18310
18311         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18312                                  rdev, dev, mac_addr, sinfo) < 0) {
18313                 nlmsg_free(msg);
18314                 return;
18315         }
18316
18317         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18318                                 NL80211_MCGRP_MLME, gfp);
18319 }
18320 EXPORT_SYMBOL(cfg80211_new_sta);
18321
18322 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18323                             struct station_info *sinfo, gfp_t gfp)
18324 {
18325         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18326         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18327         struct sk_buff *msg;
18328         struct station_info empty_sinfo = {};
18329
18330         if (!sinfo)
18331                 sinfo = &empty_sinfo;
18332
18333         trace_cfg80211_del_sta(dev, mac_addr);
18334
18335         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18336         if (!msg) {
18337                 cfg80211_sinfo_release_content(sinfo);
18338                 return;
18339         }
18340
18341         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18342                                  rdev, dev, mac_addr, sinfo) < 0) {
18343                 nlmsg_free(msg);
18344                 return;
18345         }
18346
18347         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18348                                 NL80211_MCGRP_MLME, gfp);
18349 }
18350 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18351
18352 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18353                           enum nl80211_connect_failed_reason reason,
18354                           gfp_t gfp)
18355 {
18356         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18357         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18358         struct sk_buff *msg;
18359         void *hdr;
18360
18361         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18362         if (!msg)
18363                 return;
18364
18365         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18366         if (!hdr) {
18367                 nlmsg_free(msg);
18368                 return;
18369         }
18370
18371         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18372             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18373             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18374                 goto nla_put_failure;
18375
18376         genlmsg_end(msg, hdr);
18377
18378         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18379                                 NL80211_MCGRP_MLME, gfp);
18380         return;
18381
18382  nla_put_failure:
18383         nlmsg_free(msg);
18384 }
18385 EXPORT_SYMBOL(cfg80211_conn_failed);
18386
18387 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18388                                        const u8 *addr, gfp_t gfp)
18389 {
18390         struct wireless_dev *wdev = dev->ieee80211_ptr;
18391         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18392         struct sk_buff *msg;
18393         void *hdr;
18394         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18395
18396         if (!nlportid)
18397                 return false;
18398
18399         msg = nlmsg_new(100, gfp);
18400         if (!msg)
18401                 return true;
18402
18403         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18404         if (!hdr) {
18405                 nlmsg_free(msg);
18406                 return true;
18407         }
18408
18409         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18410             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18411             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18412                 goto nla_put_failure;
18413
18414         genlmsg_end(msg, hdr);
18415         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18416         return true;
18417
18418  nla_put_failure:
18419         nlmsg_free(msg);
18420         return true;
18421 }
18422
18423 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18424                                 const u8 *addr, gfp_t gfp)
18425 {
18426         struct wireless_dev *wdev = dev->ieee80211_ptr;
18427         bool ret;
18428
18429         trace_cfg80211_rx_spurious_frame(dev, addr);
18430
18431         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18432                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18433                 trace_cfg80211_return_bool(false);
18434                 return false;
18435         }
18436         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18437                                          addr, gfp);
18438         trace_cfg80211_return_bool(ret);
18439         return ret;
18440 }
18441 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18442
18443 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18444                                         const u8 *addr, gfp_t gfp)
18445 {
18446         struct wireless_dev *wdev = dev->ieee80211_ptr;
18447         bool ret;
18448
18449         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18450
18451         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18452                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18453                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18454                 trace_cfg80211_return_bool(false);
18455                 return false;
18456         }
18457         ret = __nl80211_unexpected_frame(dev,
18458                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18459                                          addr, gfp);
18460         trace_cfg80211_return_bool(ret);
18461         return ret;
18462 }
18463 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18464
18465 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18466                       struct wireless_dev *wdev, u32 nlportid,
18467                       struct cfg80211_rx_info *info, gfp_t gfp)
18468 {
18469         struct net_device *netdev = wdev->netdev;
18470         struct sk_buff *msg;
18471         void *hdr;
18472
18473         msg = nlmsg_new(100 + info->len, gfp);
18474         if (!msg)
18475                 return -ENOMEM;
18476
18477         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18478         if (!hdr) {
18479                 nlmsg_free(msg);
18480                 return -ENOMEM;
18481         }
18482
18483         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18484             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18485                                         netdev->ifindex)) ||
18486             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18487                               NL80211_ATTR_PAD) ||
18488             (info->have_link_id &&
18489              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18490             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18491             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18492             (info->sig_dbm &&
18493              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18494             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18495             (info->flags &&
18496              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18497             (info->rx_tstamp && nla_put_u64_64bit(msg,
18498                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18499                                                   info->rx_tstamp,
18500                                                   NL80211_ATTR_PAD)) ||
18501             (info->ack_tstamp && nla_put_u64_64bit(msg,
18502                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18503                                                    info->ack_tstamp,
18504                                                    NL80211_ATTR_PAD)))
18505                 goto nla_put_failure;
18506
18507         genlmsg_end(msg, hdr);
18508
18509         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18510
18511  nla_put_failure:
18512         nlmsg_free(msg);
18513         return -ENOBUFS;
18514 }
18515
18516 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18517                                     struct cfg80211_tx_status *status,
18518                                     gfp_t gfp, enum nl80211_commands command)
18519 {
18520         struct wiphy *wiphy = wdev->wiphy;
18521         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18522         struct net_device *netdev = wdev->netdev;
18523         struct sk_buff *msg;
18524         void *hdr;
18525
18526         if (command == NL80211_CMD_FRAME_TX_STATUS)
18527                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18528                                               status->ack);
18529         else
18530                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18531                                                       status->ack);
18532
18533         msg = nlmsg_new(100 + status->len, gfp);
18534         if (!msg)
18535                 return;
18536
18537         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18538         if (!hdr) {
18539                 nlmsg_free(msg);
18540                 return;
18541         }
18542
18543         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18544             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18545                                    netdev->ifindex)) ||
18546             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18547                               NL80211_ATTR_PAD) ||
18548             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18549             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18550                               NL80211_ATTR_PAD) ||
18551             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18552             (status->tx_tstamp &&
18553              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18554                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18555             (status->ack_tstamp &&
18556              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18557                                status->ack_tstamp, NL80211_ATTR_PAD)))
18558                 goto nla_put_failure;
18559
18560         genlmsg_end(msg, hdr);
18561
18562         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18563                                 NL80211_MCGRP_MLME, gfp);
18564         return;
18565
18566 nla_put_failure:
18567         nlmsg_free(msg);
18568 }
18569
18570 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18571                                      const u8 *buf, size_t len, bool ack,
18572                                      gfp_t gfp)
18573 {
18574         struct cfg80211_tx_status status = {
18575                 .cookie = cookie,
18576                 .buf = buf,
18577                 .len = len,
18578                 .ack = ack
18579         };
18580
18581         nl80211_frame_tx_status(wdev, &status, gfp,
18582                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18583 }
18584 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18585
18586 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18587                                  struct cfg80211_tx_status *status, gfp_t gfp)
18588 {
18589         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18590 }
18591 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18592
18593 static int __nl80211_rx_control_port(struct net_device *dev,
18594                                      struct sk_buff *skb,
18595                                      bool unencrypted, gfp_t gfp)
18596 {
18597         struct wireless_dev *wdev = dev->ieee80211_ptr;
18598         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18599         struct ethhdr *ehdr = eth_hdr(skb);
18600         const u8 *addr = ehdr->h_source;
18601         u16 proto = be16_to_cpu(skb->protocol);
18602         struct sk_buff *msg;
18603         void *hdr;
18604         struct nlattr *frame;
18605
18606         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18607
18608         if (!nlportid)
18609                 return -ENOENT;
18610
18611         msg = nlmsg_new(100 + skb->len, gfp);
18612         if (!msg)
18613                 return -ENOMEM;
18614
18615         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18616         if (!hdr) {
18617                 nlmsg_free(msg);
18618                 return -ENOBUFS;
18619         }
18620
18621         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18622             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18623             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18624                               NL80211_ATTR_PAD) ||
18625             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18626             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18627             (unencrypted && nla_put_flag(msg,
18628                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18629                 goto nla_put_failure;
18630
18631         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18632         if (!frame)
18633                 goto nla_put_failure;
18634
18635         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18636         genlmsg_end(msg, hdr);
18637
18638         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18639
18640  nla_put_failure:
18641         nlmsg_free(msg);
18642         return -ENOBUFS;
18643 }
18644
18645 bool cfg80211_rx_control_port(struct net_device *dev,
18646                               struct sk_buff *skb, bool unencrypted)
18647 {
18648         int ret;
18649
18650         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
18651         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
18652         trace_cfg80211_return_bool(ret == 0);
18653         return ret == 0;
18654 }
18655 EXPORT_SYMBOL(cfg80211_rx_control_port);
18656
18657 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
18658                                             const char *mac, gfp_t gfp)
18659 {
18660         struct wireless_dev *wdev = dev->ieee80211_ptr;
18661         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18662         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18663         void **cb;
18664
18665         if (!msg)
18666                 return NULL;
18667
18668         cb = (void **)msg->cb;
18669
18670         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
18671         if (!cb[0]) {
18672                 nlmsg_free(msg);
18673                 return NULL;
18674         }
18675
18676         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18677             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18678                 goto nla_put_failure;
18679
18680         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
18681                 goto nla_put_failure;
18682
18683         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
18684         if (!cb[1])
18685                 goto nla_put_failure;
18686
18687         cb[2] = rdev;
18688
18689         return msg;
18690  nla_put_failure:
18691         nlmsg_free(msg);
18692         return NULL;
18693 }
18694
18695 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
18696 {
18697         void **cb = (void **)msg->cb;
18698         struct cfg80211_registered_device *rdev = cb[2];
18699
18700         nla_nest_end(msg, cb[1]);
18701         genlmsg_end(msg, cb[0]);
18702
18703         memset(msg->cb, 0, sizeof(msg->cb));
18704
18705         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18706                                 NL80211_MCGRP_MLME, gfp);
18707 }
18708
18709 void cfg80211_cqm_rssi_notify(struct net_device *dev,
18710                               enum nl80211_cqm_rssi_threshold_event rssi_event,
18711                               s32 rssi_level, gfp_t gfp)
18712 {
18713         struct sk_buff *msg;
18714         struct wireless_dev *wdev = dev->ieee80211_ptr;
18715         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18716
18717         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
18718
18719         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
18720                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
18721                 return;
18722
18723         if (wdev->cqm_config) {
18724                 wdev->cqm_config->last_rssi_event_value = rssi_level;
18725
18726                 cfg80211_cqm_rssi_update(rdev, dev);
18727
18728                 if (rssi_level == 0)
18729                         rssi_level = wdev->cqm_config->last_rssi_event_value;
18730         }
18731
18732         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18733         if (!msg)
18734                 return;
18735
18736         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
18737                         rssi_event))
18738                 goto nla_put_failure;
18739
18740         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
18741                                       rssi_level))
18742                 goto nla_put_failure;
18743
18744         cfg80211_send_cqm(msg, gfp);
18745
18746         return;
18747
18748  nla_put_failure:
18749         nlmsg_free(msg);
18750 }
18751 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
18752
18753 void cfg80211_cqm_txe_notify(struct net_device *dev,
18754                              const u8 *peer, u32 num_packets,
18755                              u32 rate, u32 intvl, gfp_t gfp)
18756 {
18757         struct sk_buff *msg;
18758
18759         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18760         if (!msg)
18761                 return;
18762
18763         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
18764                 goto nla_put_failure;
18765
18766         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
18767                 goto nla_put_failure;
18768
18769         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
18770                 goto nla_put_failure;
18771
18772         cfg80211_send_cqm(msg, gfp);
18773         return;
18774
18775  nla_put_failure:
18776         nlmsg_free(msg);
18777 }
18778 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
18779
18780 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
18781                                  const u8 *peer, u32 num_packets, gfp_t gfp)
18782 {
18783         struct sk_buff *msg;
18784
18785         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
18786
18787         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18788         if (!msg)
18789                 return;
18790
18791         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
18792                 goto nla_put_failure;
18793
18794         cfg80211_send_cqm(msg, gfp);
18795         return;
18796
18797  nla_put_failure:
18798         nlmsg_free(msg);
18799 }
18800 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
18801
18802 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
18803 {
18804         struct sk_buff *msg;
18805
18806         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18807         if (!msg)
18808                 return;
18809
18810         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
18811                 goto nla_put_failure;
18812
18813         cfg80211_send_cqm(msg, gfp);
18814         return;
18815
18816  nla_put_failure:
18817         nlmsg_free(msg);
18818 }
18819 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
18820
18821 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
18822                                      struct net_device *netdev, const u8 *bssid,
18823                                      const u8 *replay_ctr, gfp_t gfp)
18824 {
18825         struct sk_buff *msg;
18826         struct nlattr *rekey_attr;
18827         void *hdr;
18828
18829         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18830         if (!msg)
18831                 return;
18832
18833         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
18834         if (!hdr) {
18835                 nlmsg_free(msg);
18836                 return;
18837         }
18838
18839         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18840             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18841             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18842                 goto nla_put_failure;
18843
18844         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
18845         if (!rekey_attr)
18846                 goto nla_put_failure;
18847
18848         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
18849                     NL80211_REPLAY_CTR_LEN, replay_ctr))
18850                 goto nla_put_failure;
18851
18852         nla_nest_end(msg, rekey_attr);
18853
18854         genlmsg_end(msg, hdr);
18855
18856         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18857                                 NL80211_MCGRP_MLME, gfp);
18858         return;
18859
18860  nla_put_failure:
18861         nlmsg_free(msg);
18862 }
18863
18864 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
18865                                const u8 *replay_ctr, gfp_t gfp)
18866 {
18867         struct wireless_dev *wdev = dev->ieee80211_ptr;
18868         struct wiphy *wiphy = wdev->wiphy;
18869         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18870
18871         trace_cfg80211_gtk_rekey_notify(dev, bssid);
18872         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
18873 }
18874 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
18875
18876 static void
18877 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
18878                                struct net_device *netdev, int index,
18879                                const u8 *bssid, bool preauth, gfp_t gfp)
18880 {
18881         struct sk_buff *msg;
18882         struct nlattr *attr;
18883         void *hdr;
18884
18885         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18886         if (!msg)
18887                 return;
18888
18889         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
18890         if (!hdr) {
18891                 nlmsg_free(msg);
18892                 return;
18893         }
18894
18895         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18896             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18897                 goto nla_put_failure;
18898
18899         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
18900         if (!attr)
18901                 goto nla_put_failure;
18902
18903         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
18904             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
18905             (preauth &&
18906              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
18907                 goto nla_put_failure;
18908
18909         nla_nest_end(msg, attr);
18910
18911         genlmsg_end(msg, hdr);
18912
18913         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18914                                 NL80211_MCGRP_MLME, gfp);
18915         return;
18916
18917  nla_put_failure:
18918         nlmsg_free(msg);
18919 }
18920
18921 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
18922                                      const u8 *bssid, bool preauth, gfp_t gfp)
18923 {
18924         struct wireless_dev *wdev = dev->ieee80211_ptr;
18925         struct wiphy *wiphy = wdev->wiphy;
18926         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18927
18928         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
18929         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
18930 }
18931 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
18932
18933 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
18934                                      struct net_device *netdev,
18935                                      unsigned int link_id,
18936                                      struct cfg80211_chan_def *chandef,
18937                                      gfp_t gfp,
18938                                      enum nl80211_commands notif,
18939                                      u8 count, bool quiet)
18940 {
18941         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18942         struct sk_buff *msg;
18943         void *hdr;
18944
18945         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18946         if (!msg)
18947                 return;
18948
18949         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
18950         if (!hdr) {
18951                 nlmsg_free(msg);
18952                 return;
18953         }
18954
18955         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18956                 goto nla_put_failure;
18957
18958         if (wdev->valid_links &&
18959             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18960                 goto nla_put_failure;
18961
18962         if (nl80211_send_chandef(msg, chandef))
18963                 goto nla_put_failure;
18964
18965         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
18966                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
18967                         goto nla_put_failure;
18968                 if (quiet &&
18969                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
18970                         goto nla_put_failure;
18971         }
18972
18973         genlmsg_end(msg, hdr);
18974
18975         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18976                                 NL80211_MCGRP_MLME, gfp);
18977         return;
18978
18979  nla_put_failure:
18980         nlmsg_free(msg);
18981 }
18982
18983 void cfg80211_ch_switch_notify(struct net_device *dev,
18984                                struct cfg80211_chan_def *chandef,
18985                                unsigned int link_id)
18986 {
18987         struct wireless_dev *wdev = dev->ieee80211_ptr;
18988         struct wiphy *wiphy = wdev->wiphy;
18989         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18990
18991         ASSERT_WDEV_LOCK(wdev);
18992         WARN_INVALID_LINK_ID(wdev, link_id);
18993
18994         trace_cfg80211_ch_switch_notify(dev, chandef, link_id);
18995
18996         switch (wdev->iftype) {
18997         case NL80211_IFTYPE_STATION:
18998         case NL80211_IFTYPE_P2P_CLIENT:
18999                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19000                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19001                                                         chandef->chan);
19002                 break;
19003         case NL80211_IFTYPE_MESH_POINT:
19004                 wdev->u.mesh.chandef = *chandef;
19005                 wdev->u.mesh.preset_chandef = *chandef;
19006                 break;
19007         case NL80211_IFTYPE_AP:
19008         case NL80211_IFTYPE_P2P_GO:
19009                 wdev->links[link_id].ap.chandef = *chandef;
19010                 break;
19011         case NL80211_IFTYPE_ADHOC:
19012                 wdev->u.ibss.chandef = *chandef;
19013                 break;
19014         default:
19015                 WARN_ON(1);
19016                 break;
19017         }
19018
19019         cfg80211_sched_dfs_chan_update(rdev);
19020
19021         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19022                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
19023 }
19024 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19025
19026 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19027                                        struct cfg80211_chan_def *chandef,
19028                                        unsigned int link_id, u8 count,
19029                                        bool quiet)
19030 {
19031         struct wireless_dev *wdev = dev->ieee80211_ptr;
19032         struct wiphy *wiphy = wdev->wiphy;
19033         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19034
19035         ASSERT_WDEV_LOCK(wdev);
19036         WARN_INVALID_LINK_ID(wdev, link_id);
19037
19038         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id);
19039
19040         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19041                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19042                                  count, quiet);
19043 }
19044 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19045
19046 int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
19047                               enum nl80211_commands cmd, u8 count,
19048                               u64 color_bitmap)
19049 {
19050         struct wireless_dev *wdev = dev->ieee80211_ptr;
19051         struct wiphy *wiphy = wdev->wiphy;
19052         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19053         struct sk_buff *msg;
19054         void *hdr;
19055
19056         ASSERT_WDEV_LOCK(wdev);
19057
19058         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19059
19060         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19061         if (!msg)
19062                 return -ENOMEM;
19063
19064         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19065         if (!hdr)
19066                 goto nla_put_failure;
19067
19068         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19069                 goto nla_put_failure;
19070
19071         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19072             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19073                 goto nla_put_failure;
19074
19075         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19076             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19077                               color_bitmap, NL80211_ATTR_PAD))
19078                 goto nla_put_failure;
19079
19080         genlmsg_end(msg, hdr);
19081
19082         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19083                                        msg, 0, NL80211_MCGRP_MLME, gfp);
19084
19085 nla_put_failure:
19086         nlmsg_free(msg);
19087         return -EINVAL;
19088 }
19089 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19090
19091 void
19092 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19093                      const struct cfg80211_chan_def *chandef,
19094                      enum nl80211_radar_event event,
19095                      struct net_device *netdev, gfp_t gfp)
19096 {
19097         struct sk_buff *msg;
19098         void *hdr;
19099
19100         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19101         if (!msg)
19102                 return;
19103
19104         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19105         if (!hdr) {
19106                 nlmsg_free(msg);
19107                 return;
19108         }
19109
19110         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19111                 goto nla_put_failure;
19112
19113         /* NOP and radar events don't need a netdev parameter */
19114         if (netdev) {
19115                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19116
19117                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19118                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19119                                       NL80211_ATTR_PAD))
19120                         goto nla_put_failure;
19121         }
19122
19123         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19124                 goto nla_put_failure;
19125
19126         if (nl80211_send_chandef(msg, chandef))
19127                 goto nla_put_failure;
19128
19129         genlmsg_end(msg, hdr);
19130
19131         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19132                                 NL80211_MCGRP_MLME, gfp);
19133         return;
19134
19135  nla_put_failure:
19136         nlmsg_free(msg);
19137 }
19138
19139 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19140                                        struct sta_opmode_info *sta_opmode,
19141                                        gfp_t gfp)
19142 {
19143         struct sk_buff *msg;
19144         struct wireless_dev *wdev = dev->ieee80211_ptr;
19145         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19146         void *hdr;
19147
19148         if (WARN_ON(!mac))
19149                 return;
19150
19151         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19152         if (!msg)
19153                 return;
19154
19155         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19156         if (!hdr) {
19157                 nlmsg_free(msg);
19158                 return;
19159         }
19160
19161         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19162                 goto nla_put_failure;
19163
19164         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19165                 goto nla_put_failure;
19166
19167         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19168                 goto nla_put_failure;
19169
19170         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19171             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19172                 goto nla_put_failure;
19173
19174         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19175             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19176                 goto nla_put_failure;
19177
19178         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19179             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19180                 goto nla_put_failure;
19181
19182         genlmsg_end(msg, hdr);
19183
19184         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19185                                 NL80211_MCGRP_MLME, gfp);
19186
19187         return;
19188
19189 nla_put_failure:
19190         nlmsg_free(msg);
19191 }
19192 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19193
19194 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19195                            u64 cookie, bool acked, s32 ack_signal,
19196                            bool is_valid_ack_signal, gfp_t gfp)
19197 {
19198         struct wireless_dev *wdev = dev->ieee80211_ptr;
19199         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19200         struct sk_buff *msg;
19201         void *hdr;
19202
19203         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19204
19205         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19206
19207         if (!msg)
19208                 return;
19209
19210         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19211         if (!hdr) {
19212                 nlmsg_free(msg);
19213                 return;
19214         }
19215
19216         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19217             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19218             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19219             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19220                               NL80211_ATTR_PAD) ||
19221             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19222             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19223                                                 ack_signal)))
19224                 goto nla_put_failure;
19225
19226         genlmsg_end(msg, hdr);
19227
19228         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19229                                 NL80211_MCGRP_MLME, gfp);
19230         return;
19231
19232  nla_put_failure:
19233         nlmsg_free(msg);
19234 }
19235 EXPORT_SYMBOL(cfg80211_probe_status);
19236
19237 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19238                                      size_t len, int freq, int sig_dbm)
19239 {
19240         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19241         struct sk_buff *msg;
19242         void *hdr;
19243         struct cfg80211_beacon_registration *reg;
19244
19245         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19246
19247         spin_lock_bh(&rdev->beacon_registrations_lock);
19248         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19249                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19250                 if (!msg) {
19251                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19252                         return;
19253                 }
19254
19255                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19256                 if (!hdr)
19257                         goto nla_put_failure;
19258
19259                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19260                     (freq &&
19261                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19262                                   KHZ_TO_MHZ(freq)) ||
19263                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19264                                   freq % 1000))) ||
19265                     (sig_dbm &&
19266                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19267                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19268                         goto nla_put_failure;
19269
19270                 genlmsg_end(msg, hdr);
19271
19272                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19273         }
19274         spin_unlock_bh(&rdev->beacon_registrations_lock);
19275         return;
19276
19277  nla_put_failure:
19278         spin_unlock_bh(&rdev->beacon_registrations_lock);
19279         nlmsg_free(msg);
19280 }
19281 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19282
19283 #ifdef CONFIG_PM
19284 static int cfg80211_net_detect_results(struct sk_buff *msg,
19285                                        struct cfg80211_wowlan_wakeup *wakeup)
19286 {
19287         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19288         struct nlattr *nl_results, *nl_match, *nl_freqs;
19289         int i, j;
19290
19291         nl_results = nla_nest_start_noflag(msg,
19292                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19293         if (!nl_results)
19294                 return -EMSGSIZE;
19295
19296         for (i = 0; i < nd->n_matches; i++) {
19297                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19298
19299                 nl_match = nla_nest_start_noflag(msg, i);
19300                 if (!nl_match)
19301                         break;
19302
19303                 /* The SSID attribute is optional in nl80211, but for
19304                  * simplicity reasons it's always present in the
19305                  * cfg80211 structure.  If a driver can't pass the
19306                  * SSID, that needs to be changed.  A zero length SSID
19307                  * is still a valid SSID (wildcard), so it cannot be
19308                  * used for this purpose.
19309                  */
19310                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19311                             match->ssid.ssid)) {
19312                         nla_nest_cancel(msg, nl_match);
19313                         goto out;
19314                 }
19315
19316                 if (match->n_channels) {
19317                         nl_freqs = nla_nest_start_noflag(msg,
19318                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19319                         if (!nl_freqs) {
19320                                 nla_nest_cancel(msg, nl_match);
19321                                 goto out;
19322                         }
19323
19324                         for (j = 0; j < match->n_channels; j++) {
19325                                 if (nla_put_u32(msg, j, match->channels[j])) {
19326                                         nla_nest_cancel(msg, nl_freqs);
19327                                         nla_nest_cancel(msg, nl_match);
19328                                         goto out;
19329                                 }
19330                         }
19331
19332                         nla_nest_end(msg, nl_freqs);
19333                 }
19334
19335                 nla_nest_end(msg, nl_match);
19336         }
19337
19338 out:
19339         nla_nest_end(msg, nl_results);
19340         return 0;
19341 }
19342
19343 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19344                                    struct cfg80211_wowlan_wakeup *wakeup,
19345                                    gfp_t gfp)
19346 {
19347         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19348         struct sk_buff *msg;
19349         void *hdr;
19350         int size = 200;
19351
19352         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19353
19354         if (wakeup)
19355                 size += wakeup->packet_present_len;
19356
19357         msg = nlmsg_new(size, gfp);
19358         if (!msg)
19359                 return;
19360
19361         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19362         if (!hdr)
19363                 goto free_msg;
19364
19365         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19366             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19367                               NL80211_ATTR_PAD))
19368                 goto free_msg;
19369
19370         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19371                                         wdev->netdev->ifindex))
19372                 goto free_msg;
19373
19374         if (wakeup) {
19375                 struct nlattr *reasons;
19376
19377                 reasons = nla_nest_start_noflag(msg,
19378                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19379                 if (!reasons)
19380                         goto free_msg;
19381
19382                 if (wakeup->disconnect &&
19383                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19384                         goto free_msg;
19385                 if (wakeup->magic_pkt &&
19386                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19387                         goto free_msg;
19388                 if (wakeup->gtk_rekey_failure &&
19389                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19390                         goto free_msg;
19391                 if (wakeup->eap_identity_req &&
19392                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19393                         goto free_msg;
19394                 if (wakeup->four_way_handshake &&
19395                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19396                         goto free_msg;
19397                 if (wakeup->rfkill_release &&
19398                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19399                         goto free_msg;
19400
19401                 if (wakeup->pattern_idx >= 0 &&
19402                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19403                                 wakeup->pattern_idx))
19404                         goto free_msg;
19405
19406                 if (wakeup->tcp_match &&
19407                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19408                         goto free_msg;
19409
19410                 if (wakeup->tcp_connlost &&
19411                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19412                         goto free_msg;
19413
19414                 if (wakeup->tcp_nomoretokens &&
19415                     nla_put_flag(msg,
19416                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19417                         goto free_msg;
19418
19419                 if (wakeup->packet) {
19420                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19421                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19422
19423                         if (!wakeup->packet_80211) {
19424                                 pkt_attr =
19425                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19426                                 len_attr =
19427                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19428                         }
19429
19430                         if (wakeup->packet_len &&
19431                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19432                                 goto free_msg;
19433
19434                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19435                                     wakeup->packet))
19436                                 goto free_msg;
19437                 }
19438
19439                 if (wakeup->net_detect &&
19440                     cfg80211_net_detect_results(msg, wakeup))
19441                                 goto free_msg;
19442
19443                 nla_nest_end(msg, reasons);
19444         }
19445
19446         genlmsg_end(msg, hdr);
19447
19448         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19449                                 NL80211_MCGRP_MLME, gfp);
19450         return;
19451
19452  free_msg:
19453         nlmsg_free(msg);
19454 }
19455 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19456 #endif
19457
19458 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19459                                 enum nl80211_tdls_operation oper,
19460                                 u16 reason_code, gfp_t gfp)
19461 {
19462         struct wireless_dev *wdev = dev->ieee80211_ptr;
19463         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19464         struct sk_buff *msg;
19465         void *hdr;
19466
19467         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19468                                          reason_code);
19469
19470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19471         if (!msg)
19472                 return;
19473
19474         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19475         if (!hdr) {
19476                 nlmsg_free(msg);
19477                 return;
19478         }
19479
19480         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19481             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19482             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19483             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19484             (reason_code > 0 &&
19485              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19486                 goto nla_put_failure;
19487
19488         genlmsg_end(msg, hdr);
19489
19490         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19491                                 NL80211_MCGRP_MLME, gfp);
19492         return;
19493
19494  nla_put_failure:
19495         nlmsg_free(msg);
19496 }
19497 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19498
19499 static int nl80211_netlink_notify(struct notifier_block * nb,
19500                                   unsigned long state,
19501                                   void *_notify)
19502 {
19503         struct netlink_notify *notify = _notify;
19504         struct cfg80211_registered_device *rdev;
19505         struct wireless_dev *wdev;
19506         struct cfg80211_beacon_registration *reg, *tmp;
19507
19508         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19509                 return NOTIFY_DONE;
19510
19511         rcu_read_lock();
19512
19513         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19514                 struct cfg80211_sched_scan_request *sched_scan_req;
19515
19516                 list_for_each_entry_rcu(sched_scan_req,
19517                                         &rdev->sched_scan_req_list,
19518                                         list) {
19519                         if (sched_scan_req->owner_nlportid == notify->portid) {
19520                                 sched_scan_req->nl_owner_dead = true;
19521                                 schedule_work(&rdev->sched_scan_stop_wk);
19522                         }
19523                 }
19524
19525                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19526                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19527
19528                         if (wdev->owner_nlportid == notify->portid) {
19529                                 wdev->nl_owner_dead = true;
19530                                 schedule_work(&rdev->destroy_work);
19531                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19532                                 schedule_work(&wdev->disconnect_wk);
19533                         }
19534
19535                         cfg80211_release_pmsr(wdev, notify->portid);
19536                 }
19537
19538                 spin_lock_bh(&rdev->beacon_registrations_lock);
19539                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19540                                          list) {
19541                         if (reg->nlportid == notify->portid) {
19542                                 list_del(&reg->list);
19543                                 kfree(reg);
19544                                 break;
19545                         }
19546                 }
19547                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19548         }
19549
19550         rcu_read_unlock();
19551
19552         /*
19553          * It is possible that the user space process that is controlling the
19554          * indoor setting disappeared, so notify the regulatory core.
19555          */
19556         regulatory_netlink_notify(notify->portid);
19557         return NOTIFY_OK;
19558 }
19559
19560 static struct notifier_block nl80211_netlink_notifier = {
19561         .notifier_call = nl80211_netlink_notify,
19562 };
19563
19564 void cfg80211_ft_event(struct net_device *netdev,
19565                        struct cfg80211_ft_event_params *ft_event)
19566 {
19567         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19568         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19569         struct sk_buff *msg;
19570         void *hdr;
19571
19572         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19573
19574         if (!ft_event->target_ap)
19575                 return;
19576
19577         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19578                         GFP_KERNEL);
19579         if (!msg)
19580                 return;
19581
19582         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19583         if (!hdr)
19584                 goto out;
19585
19586         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19587             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19588             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19589                 goto out;
19590
19591         if (ft_event->ies &&
19592             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19593                 goto out;
19594         if (ft_event->ric_ies &&
19595             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19596                     ft_event->ric_ies))
19597                 goto out;
19598
19599         genlmsg_end(msg, hdr);
19600
19601         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19602                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19603         return;
19604  out:
19605         nlmsg_free(msg);
19606 }
19607 EXPORT_SYMBOL(cfg80211_ft_event);
19608
19609 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19610 {
19611         struct cfg80211_registered_device *rdev;
19612         struct sk_buff *msg;
19613         void *hdr;
19614         u32 nlportid;
19615
19616         rdev = wiphy_to_rdev(wdev->wiphy);
19617         if (!rdev->crit_proto_nlportid)
19618                 return;
19619
19620         nlportid = rdev->crit_proto_nlportid;
19621         rdev->crit_proto_nlportid = 0;
19622
19623         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19624         if (!msg)
19625                 return;
19626
19627         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19628         if (!hdr)
19629                 goto nla_put_failure;
19630
19631         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19632             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19633                               NL80211_ATTR_PAD))
19634                 goto nla_put_failure;
19635
19636         genlmsg_end(msg, hdr);
19637
19638         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19639         return;
19640
19641  nla_put_failure:
19642         nlmsg_free(msg);
19643 }
19644 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
19645
19646 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
19647 {
19648         struct wiphy *wiphy = wdev->wiphy;
19649         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19650         struct sk_buff *msg;
19651         void *hdr;
19652
19653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19654         if (!msg)
19655                 return;
19656
19657         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
19658         if (!hdr)
19659                 goto out;
19660
19661         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19662             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
19663             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19664                               NL80211_ATTR_PAD))
19665                 goto out;
19666
19667         genlmsg_end(msg, hdr);
19668
19669         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
19670                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19671         return;
19672  out:
19673         nlmsg_free(msg);
19674 }
19675
19676 int cfg80211_external_auth_request(struct net_device *dev,
19677                                    struct cfg80211_external_auth_params *params,
19678                                    gfp_t gfp)
19679 {
19680         struct wireless_dev *wdev = dev->ieee80211_ptr;
19681         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19682         struct sk_buff *msg;
19683         void *hdr;
19684
19685         if (!wdev->conn_owner_nlportid)
19686                 return -EINVAL;
19687
19688         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19689         if (!msg)
19690                 return -ENOMEM;
19691
19692         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
19693         if (!hdr)
19694                 goto nla_put_failure;
19695
19696         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19697             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19698             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
19699             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
19700                         params->action) ||
19701             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
19702             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
19703                     params->ssid.ssid))
19704                 goto nla_put_failure;
19705
19706         genlmsg_end(msg, hdr);
19707         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
19708                         wdev->conn_owner_nlportid);
19709         return 0;
19710
19711  nla_put_failure:
19712         nlmsg_free(msg);
19713         return -ENOBUFS;
19714 }
19715 EXPORT_SYMBOL(cfg80211_external_auth_request);
19716
19717 void cfg80211_update_owe_info_event(struct net_device *netdev,
19718                                     struct cfg80211_update_owe_info *owe_info,
19719                                     gfp_t gfp)
19720 {
19721         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19722         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19723         struct sk_buff *msg;
19724         void *hdr;
19725
19726         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
19727
19728         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19729         if (!msg)
19730                 return;
19731
19732         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
19733         if (!hdr)
19734                 goto nla_put_failure;
19735
19736         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19737             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19738             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
19739                 goto nla_put_failure;
19740
19741         if (!owe_info->ie_len ||
19742             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
19743                 goto nla_put_failure;
19744
19745         genlmsg_end(msg, hdr);
19746
19747         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19748                                 NL80211_MCGRP_MLME, gfp);
19749         return;
19750
19751 nla_put_failure:
19752         genlmsg_cancel(msg, hdr);
19753         nlmsg_free(msg);
19754 }
19755 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
19756
19757 /* initialisation/exit functions */
19758
19759 int __init nl80211_init(void)
19760 {
19761         int err;
19762
19763         err = genl_register_family(&nl80211_fam);
19764         if (err)
19765                 return err;
19766
19767         err = netlink_register_notifier(&nl80211_netlink_notifier);
19768         if (err)
19769                 goto err_out;
19770
19771         return 0;
19772  err_out:
19773         genl_unregister_family(&nl80211_fam);
19774         return err;
19775 }
19776
19777 void nl80211_exit(void)
19778 {
19779         netlink_unregister_notifier(&nl80211_netlink_notifier);
19780         genl_unregister_family(&nl80211_fam);
19781 }