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) 2018-2020 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 net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  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;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 213                                          u.beacon.variable);
 214
 215         if (len < fixedlen)
 216                 goto err;
 217
 218         if (ieee80211_hdrlen(mgmt->frame_control) !=
 219             offsetof(struct ieee80211_mgmt, u.beacon))
 220                 goto err;
 221
 222         data += fixedlen;
 223         len -= fixedlen;
 224
 225         for_each_element(elem, data, len) {
 226                 /* nothing */
 227         }
 228
 229         if (for_each_element_completed(elem, data, len))
 230                 return 0;
 231
 232 err:
 233         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 234         return -EINVAL;
 235 }
 236
 237 static int validate_ie_attr(const struct nlattr *attr,
 238                             struct netlink_ext_ack *extack)
 239 {
 240         const u8 *data = nla_data(attr);
 241         unsigned int len = nla_len(attr);
 242         const struct element *elem;
 243
 244         for_each_element(elem, data, len) {
 245                 /* nothing */
 246         }
 247
 248         if (for_each_element_completed(elem, data, len))
 249                 return 0;
 250
 251         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 252         return -EINVAL;
 253 }
 254
 255 /* policy for the attributes */
 256 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 257
 258 static const struct nla_policy
 259 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 260         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 261         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 262                                         .len = U8_MAX },
 263         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 264                                              .len = U8_MAX },
 265 };
 266
 267 static const struct nla_policy
 268 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 269         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 270         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 271         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 272                 NLA_POLICY_MAX(NLA_U8, 15),
 273         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 274         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 275                 NLA_POLICY_MAX(NLA_U8, 15),
 276         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 277                 NLA_POLICY_MAX(NLA_U8, 31),
 278         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 279         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 280         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 281         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 282         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 283 };
 284
 285 static const struct nla_policy
 286 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 287         [NL80211_PMSR_TYPE_FTM] =
 288                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 289 };
 290
 291 static const struct nla_policy
 292 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 293         [NL80211_PMSR_REQ_ATTR_DATA] =
 294                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 295         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 296 };
 297
 298 static const struct nla_policy
 299 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 300         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 301         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 302         [NL80211_PMSR_PEER_ATTR_REQ] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 304         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_PEERS] =
 314                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 315 };
 316
 317 static const struct nla_policy
 318 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 319         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 320                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 321         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323 };
 324
 325 static const struct nla_policy
 326 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 327         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 328         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 329         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 333         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 334                                     .len = NL80211_MAX_SUPP_RATES },
 335         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 336                                 .len = NL80211_MAX_SUPP_HT_RATES },
 337         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 338         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 343         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 344         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 345         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 346         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 347         [NL80211_TID_CONFIG_ATTR_NOACK] =
 348                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 349         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 350         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 351         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 352                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 353         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 354                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 355         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 356                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 357         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 358                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 359         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 360                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 361 };
 362
 363 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 364         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 365         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 366         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 367                                       .len = 20-1 },
 368         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 369
 370         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 371         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 372         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 373                                                 NL80211_EDMG_CHANNELS_MIN,
 374                                                 NL80211_EDMG_CHANNELS_MAX),
 375         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 376                                                 NL80211_EDMG_BW_CONFIG_MIN,
 377                                                 NL80211_EDMG_BW_CONFIG_MAX),
 378
 379         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 380         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 381         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 382         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 383
 384         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 385         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 386         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 387         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 388         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 389         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 390
 391         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 392         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 393         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 394
 395         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 396         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 397
 398         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 399         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 400                                     .len = WLAN_MAX_KEY_LEN },
 401         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 402         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 403         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 404         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 405         [NL80211_ATTR_KEY_TYPE] =
 406                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 407
 408         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 409         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 410         [NL80211_ATTR_BEACON_HEAD] =
 411                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 412                                        IEEE80211_MAX_DATA_LEN),
 413         [NL80211_ATTR_BEACON_TAIL] =
 414                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 415                                        IEEE80211_MAX_DATA_LEN),
 416         [NL80211_ATTR_STA_AID] =
 417                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 418         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 419         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 420         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 421                                                .len = NL80211_MAX_SUPP_RATES },
 422         [NL80211_ATTR_STA_PLINK_ACTION] =
 423                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 424         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 425                 NLA_POLICY_RANGE(NLA_U8,
 426                                  NL80211_TX_POWER_AUTOMATIC,
 427                                  NL80211_TX_POWER_FIXED),
 428         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 429         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 430         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 431         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 432                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 433         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 434
 435         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 436         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 437
 438         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 439         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 440         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 441         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 442                                            .len = NL80211_MAX_SUPP_RATES },
 443         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 444
 445         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 446         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 447
 448         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 449
 450         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 451         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 452                                                    validate_ie_attr,
 453                                                    IEEE80211_MAX_DATA_LEN),
 454         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 455         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 456
 457         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 458                                 .len = IEEE80211_MAX_SSID_LEN },
 459         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 460         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 461         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 463         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 464                                                   NL80211_MFP_NO,
 465                                                   NL80211_MFP_OPTIONAL),
 466         [NL80211_ATTR_STA_FLAGS2] = {
 467                 .len = sizeof(struct nl80211_sta_flag_update),
 468         },
 469         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 470         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 471         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 472         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 473         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 474         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 475         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 476         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 477         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 478         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 479         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 480         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 481         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 482         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 483         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 484                                  .len = IEEE80211_MAX_DATA_LEN },
 485         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 486         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 487                                                    NL80211_PS_DISABLED,
 488                                                    NL80211_PS_ENABLED),
 489         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 490         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 491         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 492         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 493         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 494         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 495         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 497         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 498         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 499         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 500         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 501         [NL80211_ATTR_STA_PLINK_STATE] =
 502                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 503         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 504         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 505         [NL80211_ATTR_MESH_PEER_AID] =
 506                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 507         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 508         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 509         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 510         [NL80211_ATTR_HIDDEN_SSID] =
 511                 NLA_POLICY_RANGE(NLA_U32,
 512                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 513                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 514         [NL80211_ATTR_IE_PROBE_RESP] =
 515                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 516                                        IEEE80211_MAX_DATA_LEN),
 517         [NL80211_ATTR_IE_ASSOC_RESP] =
 518                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 519                                        IEEE80211_MAX_DATA_LEN),
 520         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 521         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 523         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 524         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 525         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 526         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 527         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 528         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 529         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 530         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 531                                       .len = IEEE80211_MAX_DATA_LEN },
 532         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 533         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 534         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 535                 .len = NL80211_HT_CAPABILITY_LEN
 536         },
 537         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 538         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 539         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 540         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 541         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 542         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 543         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 544         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 545         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 546         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 547         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 548                 NLA_POLICY_RANGE(NLA_U32,
 549                                  NL80211_MESH_POWER_UNKNOWN + 1,
 550                                  NL80211_MESH_POWER_MAX),
 551         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 552         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 553         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 554         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 555         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 556         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 557         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 558                 .len = NL80211_VHT_CAPABILITY_LEN,
 559         },
 560         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 561         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 562                                   .len = IEEE80211_MAX_DATA_LEN },
 563         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 564         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
 565         [NL80211_ATTR_PEER_AID] =
 566                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 567         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 568         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 570         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 571         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 572         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 573         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 574         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 576         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 577         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 578         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 579         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 580                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 581         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 582         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 583         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 584         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 585         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 586         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 587         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 588         [NL80211_ATTR_USER_PRIO] =
 589                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 590         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 591         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 592         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 593         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 594         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 595         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 596         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 597         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 600         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 601                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 602         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 603                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 604         },
 605         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 606         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 607         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 608         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 610                                     .len = FILS_MAX_KEK_LEN },
 611         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 612         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 613         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 614         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 615         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 616                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 617         },
 618         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 619         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 620                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 621         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 622                                           .len = FILS_ERP_MAX_REALM_LEN },
 623         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 624         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 625                                         .len = FILS_ERP_MAX_RRK_LEN },
 626         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 627         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 628         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 629         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 630
 631         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 632         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 633         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 634         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 635                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 636
 637         [NL80211_ATTR_FTM_RESPONDER] =
 638                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 639         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 640         [NL80211_ATTR_PEER_MEASUREMENTS] =
 641                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 642         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 643         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 644                                         .len = SAE_PASSWORD_MAX_LEN },
 645         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 646         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 647         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 648         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 649         [NL80211_ATTR_TID_CONFIG] =
 650                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 651         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 652         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 653         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 654         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 655         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 656         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 657         [NL80211_ATTR_HE_6GHZ_CAPABILITY] = {
 658                 .type = NLA_EXACT_LEN,
 659                 .len = sizeof(struct ieee80211_he_6ghz_capa),
 660         },
 661 };
 662
 663 /* policy for the key attributes */
 664 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 665         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 666         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 667         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 668         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 669         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 670         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 671         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 672         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 673         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 674 };
 675
 676 /* policy for the key default flags */
 677 static const struct nla_policy
 678 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 679         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 680         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 681 };
 682
 683 #ifdef CONFIG_PM
 684 /* policy for WoWLAN attributes */
 685 static const struct nla_policy
 686 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 687         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 688         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 689         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 690         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 691         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 692         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 693         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 694         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 695         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 696         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 697 };
 698
 699 static const struct nla_policy
 700 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 701         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 702         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 703         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 704         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 705         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 706         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 707         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 708                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 709         },
 710         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 711                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 712         },
 713         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 714         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 715         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 716 };
 717 #endif /* CONFIG_PM */
 718
 719 /* policy for coalesce rule attributes */
 720 static const struct nla_policy
 721 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 722         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 723         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 724                 NLA_POLICY_RANGE(NLA_U32,
 725                                  NL80211_COALESCE_CONDITION_MATCH,
 726                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 727         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 728 };
 729
 730 /* policy for GTK rekey offload attributes */
 731 static const struct nla_policy
 732 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 733         [NL80211_REKEY_DATA_KEK] = {
 734                 .type = NLA_BINARY,
 735                 .len = NL80211_KEK_EXT_LEN
 736         },
 737         [NL80211_REKEY_DATA_KCK] = {
 738                 .type = NLA_BINARY,
 739                 .len = NL80211_KCK_EXT_LEN
 740         },
 741         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN_WARN(NL80211_REPLAY_CTR_LEN),
 742         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 743 };
 744
 745 static const struct nla_policy
 746 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 747         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 748         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 749         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 750         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 751 };
 752
 753 static const struct nla_policy
 754 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 755         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 756                                                  .len = IEEE80211_MAX_SSID_LEN },
 757         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 758         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 759         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 760                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 761 };
 762
 763 static const struct nla_policy
 764 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 765         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 766         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 767 };
 768
 769 static const struct nla_policy
 770 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 771         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 772         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 773         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 774                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 775         },
 776 };
 777
 778 /* policy for NAN function attributes */
 779 static const struct nla_policy
 780 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 781         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 782         [NL80211_NAN_FUNC_SERVICE_ID] = {
 783                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 784         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 785         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 786         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 787         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 788         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 789         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 790         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 791         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 792         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 793                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 794         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 795         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 796         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 797         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 798         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 799 };
 800
 801 /* policy for Service Response Filter attributes */
 802 static const struct nla_policy
 803 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 804         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 805         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 806                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 807         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 808         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 809 };
 810
 811 /* policy for packet pattern attributes */
 812 static const struct nla_policy
 813 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 814         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 815         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 816         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 817 };
 818
 819 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 820                               struct cfg80211_registered_device **rdev,
 821                               struct wireless_dev **wdev)
 822 {
 823         int err;
 824
 825         if (!cb->args[0]) {
 826                 struct nlattr **attrbuf;
 827
 828                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 829                                   GFP_KERNEL);
 830                 if (!attrbuf)
 831                         return -ENOMEM;
 832
 833                 err = nlmsg_parse_deprecated(cb->nlh,
 834                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 835                                              attrbuf, nl80211_fam.maxattr,
 836                                              nl80211_policy, NULL);
 837                 if (err) {
 838                         kfree(attrbuf);
 839                         return err;
 840                 }
 841
 842                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 843                                                    attrbuf);
 844                 kfree(attrbuf);
 845                 if (IS_ERR(*wdev))
 846                         return PTR_ERR(*wdev);
 847                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 848                 /* 0 is the first index - add 1 to parse only once */
 849                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 850                 cb->args[1] = (*wdev)->identifier;
 851         } else {
 852                 /* subtract the 1 again here */
 853                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 854                 struct wireless_dev *tmp;
 855
 856                 if (!wiphy)
 857                         return -ENODEV;
 858                 *rdev = wiphy_to_rdev(wiphy);
 859                 *wdev = NULL;
 860
 861                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 862                         if (tmp->identifier == cb->args[1]) {
 863                                 *wdev = tmp;
 864                                 break;
 865                         }
 866                 }
 867
 868                 if (!*wdev)
 869                         return -ENODEV;
 870         }
 871
 872         return 0;
 873 }
 874
 875 /* message building helper */
 876 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 877                      int flags, u8 cmd)
 878 {
 879         /* since there is no private header just add the generic one */
 880         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 881 }
 882
 883 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 884                                      const struct ieee80211_reg_rule *rule)
 885 {
 886         int j;
 887         struct nlattr *nl_wmm_rules =
 888                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 889
 890         if (!nl_wmm_rules)
 891                 goto nla_put_failure;
 892
 893         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 894                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 895
 896                 if (!nl_wmm_rule)
 897                         goto nla_put_failure;
 898
 899                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 900                                 rule->wmm_rule.client[j].cw_min) ||
 901                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 902                                 rule->wmm_rule.client[j].cw_max) ||
 903                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 904                                rule->wmm_rule.client[j].aifsn) ||
 905                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 906                                 rule->wmm_rule.client[j].cot))
 907                         goto nla_put_failure;
 908
 909                 nla_nest_end(msg, nl_wmm_rule);
 910         }
 911         nla_nest_end(msg, nl_wmm_rules);
 912
 913         return 0;
 914
 915 nla_put_failure:
 916         return -ENOBUFS;
 917 }
 918
 919 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 920                                    struct ieee80211_channel *chan,
 921                                    bool large)
 922 {
 923         /* Some channels must be completely excluded from the
 924          * list to protect old user-space tools from breaking
 925          */
 926         if (!large && chan->flags &
 927             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 928                 return 0;
 929
 930         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 931                         chan->center_freq))
 932                 goto nla_put_failure;
 933
 934         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
 935                 goto nla_put_failure;
 936
 937         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 938             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 939                 goto nla_put_failure;
 940         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 941                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 942                         goto nla_put_failure;
 943                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 944                         goto nla_put_failure;
 945         }
 946         if (chan->flags & IEEE80211_CHAN_RADAR) {
 947                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 948                         goto nla_put_failure;
 949                 if (large) {
 950                         u32 time;
 951
 952                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 953
 954                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 955                                         chan->dfs_state))
 956                                 goto nla_put_failure;
 957                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 958                                         time))
 959                                 goto nla_put_failure;
 960                         if (nla_put_u32(msg,
 961                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 962                                         chan->dfs_cac_ms))
 963                                 goto nla_put_failure;
 964                 }
 965         }
 966
 967         if (large) {
 968                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 969                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 970                         goto nla_put_failure;
 971                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 972                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 973                         goto nla_put_failure;
 974                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 975                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 976                         goto nla_put_failure;
 977                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 978                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 979                         goto nla_put_failure;
 980                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 981                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 982                         goto nla_put_failure;
 983                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 984                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 985                         goto nla_put_failure;
 986                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 987                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 988                         goto nla_put_failure;
 989                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 990                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 991                         goto nla_put_failure;
 992                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 993                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 994                         goto nla_put_failure;
 995         }
 996
 997         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 998                         DBM_TO_MBM(chan->max_power)))
 999                 goto nla_put_failure;
1000
1001         if (large) {
1002                 const struct ieee80211_reg_rule *rule =
1003                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1004
1005                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1006                         if (nl80211_msg_put_wmm_rules(msg, rule))
1007                                 goto nla_put_failure;
1008                 }
1009         }
1010
1011         return 0;
1012
1013  nla_put_failure:
1014         return -ENOBUFS;
1015 }
1016
1017 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1018                                   struct cfg80211_txq_stats *txqstats,
1019                                   int attrtype)
1020 {
1021         struct nlattr *txqattr;
1022
1023 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1024         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1025             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1026                 return false;                                             \
1027         } while (0)
1028
1029         txqattr = nla_nest_start_noflag(msg, attrtype);
1030         if (!txqattr)
1031                 return false;
1032
1033         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1034         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1035         PUT_TXQVAL_U32(FLOWS, flows);
1036         PUT_TXQVAL_U32(DROPS, drops);
1037         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1038         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1039         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1040         PUT_TXQVAL_U32(COLLISIONS, collisions);
1041         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1042         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1043         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1044         nla_nest_end(msg, txqattr);
1045
1046 #undef PUT_TXQVAL_U32
1047         return true;
1048 }
1049
1050 /* netlink command implementations */
1051
1052 struct key_parse {
1053         struct key_params p;
1054         int idx;
1055         int type;
1056         bool def, defmgmt, defbeacon;
1057         bool def_uni, def_multi;
1058 };
1059
1060 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1061                                  struct key_parse *k)
1062 {
1063         struct nlattr *tb[NL80211_KEY_MAX + 1];
1064         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1065                                               nl80211_key_policy,
1066                                               info->extack);
1067         if (err)
1068                 return err;
1069
1070         k->def = !!tb[NL80211_KEY_DEFAULT];
1071         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1072         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1073
1074         if (k->def) {
1075                 k->def_uni = true;
1076                 k->def_multi = true;
1077         }
1078         if (k->defmgmt || k->defbeacon)
1079                 k->def_multi = true;
1080
1081         if (tb[NL80211_KEY_IDX])
1082                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1083
1084         if (tb[NL80211_KEY_DATA]) {
1085                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1086                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1087         }
1088
1089         if (tb[NL80211_KEY_SEQ]) {
1090                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1091                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1092         }
1093
1094         if (tb[NL80211_KEY_CIPHER])
1095                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1096
1097         if (tb[NL80211_KEY_TYPE])
1098                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1099
1100         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1101                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1102
1103                 err = nla_parse_nested_deprecated(kdt,
1104                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1105                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1106                                                   nl80211_key_default_policy,
1107                                                   info->extack);
1108                 if (err)
1109                         return err;
1110
1111                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1112                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1113         }
1114
1115         if (tb[NL80211_KEY_MODE])
1116                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1117
1118         return 0;
1119 }
1120
1121 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1122 {
1123         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1124                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1125                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1126         }
1127
1128         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1129                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1130                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1131         }
1132
1133         if (info->attrs[NL80211_ATTR_KEY_IDX])
1134                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1135
1136         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1137                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1138
1139         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1140         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1141
1142         if (k->def) {
1143                 k->def_uni = true;
1144                 k->def_multi = true;
1145         }
1146         if (k->defmgmt)
1147                 k->def_multi = true;
1148
1149         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1150                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1151
1152         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1153                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1154                 int err = nla_parse_nested_deprecated(kdt,
1155                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1156                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1157                                                       nl80211_key_default_policy,
1158                                                       info->extack);
1159                 if (err)
1160                         return err;
1161
1162                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1163                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1164         }
1165
1166         return 0;
1167 }
1168
1169 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1170 {
1171         int err;
1172
1173         memset(k, 0, sizeof(*k));
1174         k->idx = -1;
1175         k->type = -1;
1176
1177         if (info->attrs[NL80211_ATTR_KEY])
1178                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1179         else
1180                 err = nl80211_parse_key_old(info, k);
1181
1182         if (err)
1183                 return err;
1184
1185         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1186             (k->defbeacon ? 1 : 0) > 1) {
1187                 GENL_SET_ERR_MSG(info,
1188                                  "key with multiple default flags is invalid");
1189                 return -EINVAL;
1190         }
1191
1192         if (k->defmgmt || k->defbeacon) {
1193                 if (k->def_uni || !k->def_multi) {
1194                         GENL_SET_ERR_MSG(info,
1195                                          "defmgmt/defbeacon key must be mcast");
1196                         return -EINVAL;
1197                 }
1198         }
1199
1200         if (k->idx != -1) {
1201                 if (k->defmgmt) {
1202                         if (k->idx < 4 || k->idx > 5) {
1203                                 GENL_SET_ERR_MSG(info,
1204                                                  "defmgmt key idx not 4 or 5");
1205                                 return -EINVAL;
1206                         }
1207                 } else if (k->defbeacon) {
1208                         if (k->idx < 6 || k->idx > 7) {
1209                                 GENL_SET_ERR_MSG(info,
1210                                                  "defbeacon key idx not 6 or 7");
1211                                 return -EINVAL;
1212                         }
1213                 } else if (k->def) {
1214                         if (k->idx < 0 || k->idx > 3) {
1215                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1216                                 return -EINVAL;
1217                         }
1218                 } else {
1219                         if (k->idx < 0 || k->idx > 7) {
1220                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1221                                 return -EINVAL;
1222                         }
1223                 }
1224         }
1225
1226         return 0;
1227 }
1228
1229 static struct cfg80211_cached_keys *
1230 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1231                        struct genl_info *info, bool *no_ht)
1232 {
1233         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1234         struct key_parse parse;
1235         struct nlattr *key;
1236         struct cfg80211_cached_keys *result;
1237         int rem, err, def = 0;
1238         bool have_key = false;
1239
1240         nla_for_each_nested(key, keys, rem) {
1241                 have_key = true;
1242                 break;
1243         }
1244
1245         if (!have_key)
1246                 return NULL;
1247
1248         result = kzalloc(sizeof(*result), GFP_KERNEL);
1249         if (!result)
1250                 return ERR_PTR(-ENOMEM);
1251
1252         result->def = -1;
1253
1254         nla_for_each_nested(key, keys, rem) {
1255                 memset(&parse, 0, sizeof(parse));
1256                 parse.idx = -1;
1257
1258                 err = nl80211_parse_key_new(info, key, &parse);
1259                 if (err)
1260                         goto error;
1261                 err = -EINVAL;
1262                 if (!parse.p.key)
1263                         goto error;
1264                 if (parse.idx < 0 || parse.idx > 3) {
1265                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1266                         goto error;
1267                 }
1268                 if (parse.def) {
1269                         if (def) {
1270                                 GENL_SET_ERR_MSG(info,
1271                                                  "only one key can be default");
1272                                 goto error;
1273                         }
1274                         def = 1;
1275                         result->def = parse.idx;
1276                         if (!parse.def_uni || !parse.def_multi)
1277                                 goto error;
1278                 } else if (parse.defmgmt)
1279                         goto error;
1280                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1281                                                      parse.idx, false, NULL);
1282                 if (err)
1283                         goto error;
1284                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1285                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1286                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1287                         err = -EINVAL;
1288                         goto error;
1289                 }
1290                 result->params[parse.idx].cipher = parse.p.cipher;
1291                 result->params[parse.idx].key_len = parse.p.key_len;
1292                 result->params[parse.idx].key = result->data[parse.idx];
1293                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1294
1295                 /* must be WEP key if we got here */
1296                 if (no_ht)
1297                         *no_ht = true;
1298         }
1299
1300         if (result->def < 0) {
1301                 err = -EINVAL;
1302                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1303                 goto error;
1304         }
1305
1306         return result;
1307  error:
1308         kfree(result);
1309         return ERR_PTR(err);
1310 }
1311
1312 static int nl80211_key_allowed(struct wireless_dev *wdev)
1313 {
1314         ASSERT_WDEV_LOCK(wdev);
1315
1316         switch (wdev->iftype) {
1317         case NL80211_IFTYPE_AP:
1318         case NL80211_IFTYPE_AP_VLAN:
1319         case NL80211_IFTYPE_P2P_GO:
1320         case NL80211_IFTYPE_MESH_POINT:
1321                 break;
1322         case NL80211_IFTYPE_ADHOC:
1323         case NL80211_IFTYPE_STATION:
1324         case NL80211_IFTYPE_P2P_CLIENT:
1325                 if (!wdev->current_bss)
1326                         return -ENOLINK;
1327                 break;
1328         case NL80211_IFTYPE_UNSPECIFIED:
1329         case NL80211_IFTYPE_OCB:
1330         case NL80211_IFTYPE_MONITOR:
1331         case NL80211_IFTYPE_NAN:
1332         case NL80211_IFTYPE_P2P_DEVICE:
1333         case NL80211_IFTYPE_WDS:
1334         case NUM_NL80211_IFTYPES:
1335                 return -EINVAL;
1336         }
1337
1338         return 0;
1339 }
1340
1341 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1342                                                         u32 freq)
1343 {
1344         struct ieee80211_channel *chan;
1345
1346         chan = ieee80211_get_channel_khz(wiphy, freq);
1347         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1348                 return NULL;
1349         return chan;
1350 }
1351
1352 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1353 {
1354         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1355         int i;
1356
1357         if (!nl_modes)
1358                 goto nla_put_failure;
1359
1360         i = 0;
1361         while (ifmodes) {
1362                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1363                         goto nla_put_failure;
1364                 ifmodes >>= 1;
1365                 i++;
1366         }
1367
1368         nla_nest_end(msg, nl_modes);
1369         return 0;
1370
1371 nla_put_failure:
1372         return -ENOBUFS;
1373 }
1374
1375 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1376                                           struct sk_buff *msg,
1377                                           bool large)
1378 {
1379         struct nlattr *nl_combis;
1380         int i, j;
1381
1382         nl_combis = nla_nest_start_noflag(msg,
1383                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1384         if (!nl_combis)
1385                 goto nla_put_failure;
1386
1387         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1388                 const struct ieee80211_iface_combination *c;
1389                 struct nlattr *nl_combi, *nl_limits;
1390
1391                 c = &wiphy->iface_combinations[i];
1392
1393                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1394                 if (!nl_combi)
1395                         goto nla_put_failure;
1396
1397                 nl_limits = nla_nest_start_noflag(msg,
1398                                                   NL80211_IFACE_COMB_LIMITS);
1399                 if (!nl_limits)
1400                         goto nla_put_failure;
1401
1402                 for (j = 0; j < c->n_limits; j++) {
1403                         struct nlattr *nl_limit;
1404
1405                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1406                         if (!nl_limit)
1407                                 goto nla_put_failure;
1408                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1409                                         c->limits[j].max))
1410                                 goto nla_put_failure;
1411                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1412                                                 c->limits[j].types))
1413                                 goto nla_put_failure;
1414                         nla_nest_end(msg, nl_limit);
1415                 }
1416
1417                 nla_nest_end(msg, nl_limits);
1418
1419                 if (c->beacon_int_infra_match &&
1420                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1421                         goto nla_put_failure;
1422                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1423                                 c->num_different_channels) ||
1424                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1425                                 c->max_interfaces))
1426                         goto nla_put_failure;
1427                 if (large &&
1428                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1429                                 c->radar_detect_widths) ||
1430                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1431                                 c->radar_detect_regions)))
1432                         goto nla_put_failure;
1433                 if (c->beacon_int_min_gcd &&
1434                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1435                                 c->beacon_int_min_gcd))
1436                         goto nla_put_failure;
1437
1438                 nla_nest_end(msg, nl_combi);
1439         }
1440
1441         nla_nest_end(msg, nl_combis);
1442
1443         return 0;
1444 nla_put_failure:
1445         return -ENOBUFS;
1446 }
1447
1448 #ifdef CONFIG_PM
1449 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1450                                         struct sk_buff *msg)
1451 {
1452         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1453         struct nlattr *nl_tcp;
1454
1455         if (!tcp)
1456                 return 0;
1457
1458         nl_tcp = nla_nest_start_noflag(msg,
1459                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1460         if (!nl_tcp)
1461                 return -ENOBUFS;
1462
1463         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1464                         tcp->data_payload_max))
1465                 return -ENOBUFS;
1466
1467         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1468                         tcp->data_payload_max))
1469                 return -ENOBUFS;
1470
1471         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1472                 return -ENOBUFS;
1473
1474         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1475                                 sizeof(*tcp->tok), tcp->tok))
1476                 return -ENOBUFS;
1477
1478         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1479                         tcp->data_interval_max))
1480                 return -ENOBUFS;
1481
1482         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1483                         tcp->wake_payload_max))
1484                 return -ENOBUFS;
1485
1486         nla_nest_end(msg, nl_tcp);
1487         return 0;
1488 }
1489
1490 static int nl80211_send_wowlan(struct sk_buff *msg,
1491                                struct cfg80211_registered_device *rdev,
1492                                bool large)
1493 {
1494         struct nlattr *nl_wowlan;
1495
1496         if (!rdev->wiphy.wowlan)
1497                 return 0;
1498
1499         nl_wowlan = nla_nest_start_noflag(msg,
1500                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1501         if (!nl_wowlan)
1502                 return -ENOBUFS;
1503
1504         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1505              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1506             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1507              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1508             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1509              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1510             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1511              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1512             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1513              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1514             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1515              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1516             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1517              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1518             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1519              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1520                 return -ENOBUFS;
1521
1522         if (rdev->wiphy.wowlan->n_patterns) {
1523                 struct nl80211_pattern_support pat = {
1524                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1525                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1526                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1527                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1528                 };
1529
1530                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1531                             sizeof(pat), &pat))
1532                         return -ENOBUFS;
1533         }
1534
1535         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1536             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1537                         rdev->wiphy.wowlan->max_nd_match_sets))
1538                 return -ENOBUFS;
1539
1540         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1541                 return -ENOBUFS;
1542
1543         nla_nest_end(msg, nl_wowlan);
1544
1545         return 0;
1546 }
1547 #endif
1548
1549 static int nl80211_send_coalesce(struct sk_buff *msg,
1550                                  struct cfg80211_registered_device *rdev)
1551 {
1552         struct nl80211_coalesce_rule_support rule;
1553
1554         if (!rdev->wiphy.coalesce)
1555                 return 0;
1556
1557         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1558         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1559         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1560         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1561         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1562         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1563
1564         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1565                 return -ENOBUFS;
1566
1567         return 0;
1568 }
1569
1570 static int
1571 nl80211_send_iftype_data(struct sk_buff *msg,
1572                          const struct ieee80211_supported_band *sband,
1573                          const struct ieee80211_sband_iftype_data *iftdata)
1574 {
1575         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1576
1577         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1578                                 iftdata->types_mask))
1579                 return -ENOBUFS;
1580
1581         if (he_cap->has_he) {
1582                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1583                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1584                             he_cap->he_cap_elem.mac_cap_info) ||
1585                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1586                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1587                             he_cap->he_cap_elem.phy_cap_info) ||
1588                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1589                             sizeof(he_cap->he_mcs_nss_supp),
1590                             &he_cap->he_mcs_nss_supp) ||
1591                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1592                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1593                         return -ENOBUFS;
1594         }
1595
1596         if (sband->band == NL80211_BAND_6GHZ &&
1597             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1598                     sizeof(iftdata->he_6ghz_capa),
1599                     &iftdata->he_6ghz_capa))
1600                 return -ENOBUFS;
1601
1602         return 0;
1603 }
1604
1605 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1606                                       struct ieee80211_supported_band *sband)
1607 {
1608         struct nlattr *nl_rates, *nl_rate;
1609         struct ieee80211_rate *rate;
1610         int i;
1611
1612         /* add HT info */
1613         if (sband->ht_cap.ht_supported &&
1614             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1615                      sizeof(sband->ht_cap.mcs),
1616                      &sband->ht_cap.mcs) ||
1617              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1618                          sband->ht_cap.cap) ||
1619              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1620                         sband->ht_cap.ampdu_factor) ||
1621              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1622                         sband->ht_cap.ampdu_density)))
1623                 return -ENOBUFS;
1624
1625         /* add VHT info */
1626         if (sband->vht_cap.vht_supported &&
1627             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1628                      sizeof(sband->vht_cap.vht_mcs),
1629                      &sband->vht_cap.vht_mcs) ||
1630              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1631                          sband->vht_cap.cap)))
1632                 return -ENOBUFS;
1633
1634         if (sband->n_iftype_data) {
1635                 struct nlattr *nl_iftype_data =
1636                         nla_nest_start_noflag(msg,
1637                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1638                 int err;
1639
1640                 if (!nl_iftype_data)
1641                         return -ENOBUFS;
1642
1643                 for (i = 0; i < sband->n_iftype_data; i++) {
1644                         struct nlattr *iftdata;
1645
1646                         iftdata = nla_nest_start_noflag(msg, i + 1);
1647                         if (!iftdata)
1648                                 return -ENOBUFS;
1649
1650                         err = nl80211_send_iftype_data(msg, sband,
1651                                                        &sband->iftype_data[i]);
1652                         if (err)
1653                                 return err;
1654
1655                         nla_nest_end(msg, iftdata);
1656                 }
1657
1658                 nla_nest_end(msg, nl_iftype_data);
1659         }
1660
1661         /* add EDMG info */
1662         if (sband->edmg_cap.channels &&
1663             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1664                        sband->edmg_cap.channels) ||
1665             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1666                        sband->edmg_cap.bw_config)))
1667
1668                 return -ENOBUFS;
1669
1670         /* add bitrates */
1671         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1672         if (!nl_rates)
1673                 return -ENOBUFS;
1674
1675         for (i = 0; i < sband->n_bitrates; i++) {
1676                 nl_rate = nla_nest_start_noflag(msg, i);
1677                 if (!nl_rate)
1678                         return -ENOBUFS;
1679
1680                 rate = &sband->bitrates[i];
1681                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1682                                 rate->bitrate))
1683                         return -ENOBUFS;
1684                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1685                     nla_put_flag(msg,
1686                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1687                         return -ENOBUFS;
1688
1689                 nla_nest_end(msg, nl_rate);
1690         }
1691
1692         nla_nest_end(msg, nl_rates);
1693
1694         return 0;
1695 }
1696
1697 static int
1698 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1699                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1700 {
1701         u16 stypes;
1702         struct nlattr *nl_ftypes, *nl_ifs;
1703         enum nl80211_iftype ift;
1704         int i;
1705
1706         if (!mgmt_stypes)
1707                 return 0;
1708
1709         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1710         if (!nl_ifs)
1711                 return -ENOBUFS;
1712
1713         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1714                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1715                 if (!nl_ftypes)
1716                         return -ENOBUFS;
1717                 i = 0;
1718                 stypes = mgmt_stypes[ift].tx;
1719                 while (stypes) {
1720                         if ((stypes & 1) &&
1721                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1722                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1723                                 return -ENOBUFS;
1724                         stypes >>= 1;
1725                         i++;
1726                 }
1727                 nla_nest_end(msg, nl_ftypes);
1728         }
1729
1730         nla_nest_end(msg, nl_ifs);
1731
1732         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1733         if (!nl_ifs)
1734                 return -ENOBUFS;
1735
1736         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1737                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1738                 if (!nl_ftypes)
1739                         return -ENOBUFS;
1740                 i = 0;
1741                 stypes = mgmt_stypes[ift].rx;
1742                 while (stypes) {
1743                         if ((stypes & 1) &&
1744                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1745                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1746                                 return -ENOBUFS;
1747                         stypes >>= 1;
1748                         i++;
1749                 }
1750                 nla_nest_end(msg, nl_ftypes);
1751         }
1752         nla_nest_end(msg, nl_ifs);
1753
1754         return 0;
1755 }
1756
1757 #define CMD(op, n)                                                      \
1758          do {                                                           \
1759                 if (rdev->ops->op) {                                    \
1760                         i++;                                            \
1761                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1762                                 goto nla_put_failure;                   \
1763                 }                                                       \
1764         } while (0)
1765
1766 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1767                                         struct sk_buff *msg)
1768 {
1769         int i = 0;
1770
1771         /*
1772          * do *NOT* add anything into this function, new things need to be
1773          * advertised only to new versions of userspace that can deal with
1774          * the split (and they can't possibly care about new features...
1775          */
1776         CMD(add_virtual_intf, NEW_INTERFACE);
1777         CMD(change_virtual_intf, SET_INTERFACE);
1778         CMD(add_key, NEW_KEY);
1779         CMD(start_ap, START_AP);
1780         CMD(add_station, NEW_STATION);
1781         CMD(add_mpath, NEW_MPATH);
1782         CMD(update_mesh_config, SET_MESH_CONFIG);
1783         CMD(change_bss, SET_BSS);
1784         CMD(auth, AUTHENTICATE);
1785         CMD(assoc, ASSOCIATE);
1786         CMD(deauth, DEAUTHENTICATE);
1787         CMD(disassoc, DISASSOCIATE);
1788         CMD(join_ibss, JOIN_IBSS);
1789         CMD(join_mesh, JOIN_MESH);
1790         CMD(set_pmksa, SET_PMKSA);
1791         CMD(del_pmksa, DEL_PMKSA);
1792         CMD(flush_pmksa, FLUSH_PMKSA);
1793         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1794                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1795         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1796         CMD(mgmt_tx, FRAME);
1797         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1798         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1799                 i++;
1800                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1801                         goto nla_put_failure;
1802         }
1803         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1804             rdev->ops->join_mesh) {
1805                 i++;
1806                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1807                         goto nla_put_failure;
1808         }
1809         CMD(set_wds_peer, SET_WDS_PEER);
1810         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1811                 CMD(tdls_mgmt, TDLS_MGMT);
1812                 CMD(tdls_oper, TDLS_OPER);
1813         }
1814         if (rdev->wiphy.max_sched_scan_reqs)
1815                 CMD(sched_scan_start, START_SCHED_SCAN);
1816         CMD(probe_client, PROBE_CLIENT);
1817         CMD(set_noack_map, SET_NOACK_MAP);
1818         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1819                 i++;
1820                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1821                         goto nla_put_failure;
1822         }
1823         CMD(start_p2p_device, START_P2P_DEVICE);
1824         CMD(set_mcast_rate, SET_MCAST_RATE);
1825 #ifdef CONFIG_NL80211_TESTMODE
1826         CMD(testmode_cmd, TESTMODE);
1827 #endif
1828
1829         if (rdev->ops->connect || rdev->ops->auth) {
1830                 i++;
1831                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1832                         goto nla_put_failure;
1833         }
1834
1835         if (rdev->ops->disconnect || rdev->ops->deauth) {
1836                 i++;
1837                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1838                         goto nla_put_failure;
1839         }
1840
1841         return i;
1842  nla_put_failure:
1843         return -ENOBUFS;
1844 }
1845
1846 static int
1847 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1848                            struct sk_buff *msg)
1849 {
1850         struct nlattr *ftm;
1851
1852         if (!cap->ftm.supported)
1853                 return 0;
1854
1855         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1856         if (!ftm)
1857                 return -ENOBUFS;
1858
1859         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1860                 return -ENOBUFS;
1861         if (cap->ftm.non_asap &&
1862             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1863                 return -ENOBUFS;
1864         if (cap->ftm.request_lci &&
1865             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1866                 return -ENOBUFS;
1867         if (cap->ftm.request_civicloc &&
1868             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1869                 return -ENOBUFS;
1870         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1871                         cap->ftm.preambles))
1872                 return -ENOBUFS;
1873         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1874                         cap->ftm.bandwidths))
1875                 return -ENOBUFS;
1876         if (cap->ftm.max_bursts_exponent >= 0 &&
1877             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1878                         cap->ftm.max_bursts_exponent))
1879                 return -ENOBUFS;
1880         if (cap->ftm.max_ftms_per_burst &&
1881             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1882                         cap->ftm.max_ftms_per_burst))
1883                 return -ENOBUFS;
1884         if (cap->ftm.trigger_based &&
1885             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1886                 return -ENOBUFS;
1887         if (cap->ftm.non_trigger_based &&
1888             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1889                 return -ENOBUFS;
1890
1891         nla_nest_end(msg, ftm);
1892         return 0;
1893 }
1894
1895 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1896                                   struct sk_buff *msg)
1897 {
1898         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1899         struct nlattr *pmsr, *caps;
1900
1901         if (!cap)
1902                 return 0;
1903
1904         /*
1905          * we don't need to clean up anything here since the caller
1906          * will genlmsg_cancel() if we fail
1907          */
1908
1909         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1910         if (!pmsr)
1911                 return -ENOBUFS;
1912
1913         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1914                 return -ENOBUFS;
1915
1916         if (cap->report_ap_tsf &&
1917             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1918                 return -ENOBUFS;
1919
1920         if (cap->randomize_mac_addr &&
1921             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1922                 return -ENOBUFS;
1923
1924         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1925         if (!caps)
1926                 return -ENOBUFS;
1927
1928         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1929                 return -ENOBUFS;
1930
1931         nla_nest_end(msg, caps);
1932         nla_nest_end(msg, pmsr);
1933
1934         return 0;
1935 }
1936
1937 static int
1938 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1939                               struct sk_buff *msg)
1940 {
1941         int i;
1942         struct nlattr *nested, *nested_akms;
1943         const struct wiphy_iftype_akm_suites *iftype_akms;
1944
1945         if (!rdev->wiphy.num_iftype_akm_suites ||
1946             !rdev->wiphy.iftype_akm_suites)
1947                 return 0;
1948
1949         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1950         if (!nested)
1951                 return -ENOBUFS;
1952
1953         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1954                 nested_akms = nla_nest_start(msg, i + 1);
1955                 if (!nested_akms)
1956                         return -ENOBUFS;
1957
1958                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1959
1960                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1961                                         iftype_akms->iftypes_mask))
1962                         return -ENOBUFS;
1963
1964                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1965                             sizeof(u32) * iftype_akms->n_akm_suites,
1966                             iftype_akms->akm_suites)) {
1967                         return -ENOBUFS;
1968                 }
1969                 nla_nest_end(msg, nested_akms);
1970         }
1971
1972         nla_nest_end(msg, nested);
1973
1974         return 0;
1975 }
1976
1977 static int
1978 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1979                                struct sk_buff *msg)
1980 {
1981         struct nlattr *supp;
1982
1983         if (!rdev->wiphy.tid_config_support.vif &&
1984             !rdev->wiphy.tid_config_support.peer)
1985                 return 0;
1986
1987         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1988         if (!supp)
1989                 return -ENOSPC;
1990
1991         if (rdev->wiphy.tid_config_support.vif &&
1992             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1993                               rdev->wiphy.tid_config_support.vif,
1994                               NL80211_TID_CONFIG_ATTR_PAD))
1995                 goto fail;
1996
1997         if (rdev->wiphy.tid_config_support.peer &&
1998             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
1999                               rdev->wiphy.tid_config_support.peer,
2000                               NL80211_TID_CONFIG_ATTR_PAD))
2001                 goto fail;
2002
2003         /* for now we just use the same value ... makes more sense */
2004         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2005                        rdev->wiphy.tid_config_support.max_retry))
2006                 goto fail;
2007         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2008                        rdev->wiphy.tid_config_support.max_retry))
2009                 goto fail;
2010
2011         nla_nest_end(msg, supp);
2012
2013         return 0;
2014 fail:
2015         nla_nest_cancel(msg, supp);
2016         return -ENOBUFS;
2017 }
2018
2019 struct nl80211_dump_wiphy_state {
2020         s64 filter_wiphy;
2021         long start;
2022         long split_start, band_start, chan_start, capa_start;
2023         bool split;
2024 };
2025
2026 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2027                               enum nl80211_commands cmd,
2028                               struct sk_buff *msg, u32 portid, u32 seq,
2029                               int flags, struct nl80211_dump_wiphy_state *state)
2030 {
2031         void *hdr;
2032         struct nlattr *nl_bands, *nl_band;
2033         struct nlattr *nl_freqs, *nl_freq;
2034         struct nlattr *nl_cmds;
2035         enum nl80211_band band;
2036         struct ieee80211_channel *chan;
2037         int i;
2038         const struct ieee80211_txrx_stypes *mgmt_stypes =
2039                                 rdev->wiphy.mgmt_stypes;
2040         u32 features;
2041
2042         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2043         if (!hdr)
2044                 return -ENOBUFS;
2045
2046         if (WARN_ON(!state))
2047                 return -EINVAL;
2048
2049         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2050             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2051                            wiphy_name(&rdev->wiphy)) ||
2052             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2053                         cfg80211_rdev_list_generation))
2054                 goto nla_put_failure;
2055
2056         if (cmd != NL80211_CMD_NEW_WIPHY)
2057                 goto finish;
2058
2059         switch (state->split_start) {
2060         case 0:
2061                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2062                                rdev->wiphy.retry_short) ||
2063                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2064                                rdev->wiphy.retry_long) ||
2065                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2066                                 rdev->wiphy.frag_threshold) ||
2067                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2068                                 rdev->wiphy.rts_threshold) ||
2069                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2070                                rdev->wiphy.coverage_class) ||
2071                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2072                                rdev->wiphy.max_scan_ssids) ||
2073                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2074                                rdev->wiphy.max_sched_scan_ssids) ||
2075                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2076                                 rdev->wiphy.max_scan_ie_len) ||
2077                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2078                                 rdev->wiphy.max_sched_scan_ie_len) ||
2079                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2080                                rdev->wiphy.max_match_sets) ||
2081                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2082                                 rdev->wiphy.max_sched_scan_plans) ||
2083                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2084                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2085                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2086                                 rdev->wiphy.max_sched_scan_plan_iterations))
2087                         goto nla_put_failure;
2088
2089                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2090                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2091                         goto nla_put_failure;
2092                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2093                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2094                         goto nla_put_failure;
2095                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2096                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2097                         goto nla_put_failure;
2098                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2099                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2100                         goto nla_put_failure;
2101                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2102                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2103                         goto nla_put_failure;
2104                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2105                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2106                         goto nla_put_failure;
2107                 state->split_start++;
2108                 if (state->split)
2109                         break;
2110                 /* fall through */
2111         case 1:
2112                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2113                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2114                             rdev->wiphy.cipher_suites))
2115                         goto nla_put_failure;
2116
2117                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2118                                rdev->wiphy.max_num_pmkids))
2119                         goto nla_put_failure;
2120
2121                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2122                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2123                         goto nla_put_failure;
2124
2125                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2126                                 rdev->wiphy.available_antennas_tx) ||
2127                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2128                                 rdev->wiphy.available_antennas_rx))
2129                         goto nla_put_failure;
2130
2131                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2132                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2133                                 rdev->wiphy.probe_resp_offload))
2134                         goto nla_put_failure;
2135
2136                 if ((rdev->wiphy.available_antennas_tx ||
2137                      rdev->wiphy.available_antennas_rx) &&
2138                     rdev->ops->get_antenna) {
2139                         u32 tx_ant = 0, rx_ant = 0;
2140                         int res;
2141
2142                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2143                         if (!res) {
2144                                 if (nla_put_u32(msg,
2145                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2146                                                 tx_ant) ||
2147                                     nla_put_u32(msg,
2148                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2149                                                 rx_ant))
2150                                         goto nla_put_failure;
2151                         }
2152                 }
2153
2154                 state->split_start++;
2155                 if (state->split)
2156                         break;
2157                 /* fall through */
2158         case 2:
2159                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2160                                         rdev->wiphy.interface_modes))
2161                                 goto nla_put_failure;
2162                 state->split_start++;
2163                 if (state->split)
2164                         break;
2165                 /* fall through */
2166         case 3:
2167                 nl_bands = nla_nest_start_noflag(msg,
2168                                                  NL80211_ATTR_WIPHY_BANDS);
2169                 if (!nl_bands)
2170                         goto nla_put_failure;
2171
2172                 for (band = state->band_start;
2173                      band < NUM_NL80211_BANDS; band++) {
2174                         struct ieee80211_supported_band *sband;
2175
2176                         sband = rdev->wiphy.bands[band];
2177
2178                         if (!sband)
2179                                 continue;
2180
2181                         nl_band = nla_nest_start_noflag(msg, band);
2182                         if (!nl_band)
2183                                 goto nla_put_failure;
2184
2185                         switch (state->chan_start) {
2186                         case 0:
2187                                 if (nl80211_send_band_rateinfo(msg, sband))
2188                                         goto nla_put_failure;
2189                                 state->chan_start++;
2190                                 if (state->split)
2191                                         break;
2192                                 /* fall through */
2193                         default:
2194                                 /* add frequencies */
2195                                 nl_freqs = nla_nest_start_noflag(msg,
2196                                                                  NL80211_BAND_ATTR_FREQS);
2197                                 if (!nl_freqs)
2198                                         goto nla_put_failure;
2199
2200                                 for (i = state->chan_start - 1;
2201                                      i < sband->n_channels;
2202                                      i++) {
2203                                         nl_freq = nla_nest_start_noflag(msg,
2204                                                                         i);
2205                                         if (!nl_freq)
2206                                                 goto nla_put_failure;
2207
2208                                         chan = &sband->channels[i];
2209
2210                                         if (nl80211_msg_put_channel(
2211                                                         msg, &rdev->wiphy, chan,
2212                                                         state->split))
2213                                                 goto nla_put_failure;
2214
2215                                         nla_nest_end(msg, nl_freq);
2216                                         if (state->split)
2217                                                 break;
2218                                 }
2219                                 if (i < sband->n_channels)
2220                                         state->chan_start = i + 2;
2221                                 else
2222                                         state->chan_start = 0;
2223                                 nla_nest_end(msg, nl_freqs);
2224                         }
2225
2226                         nla_nest_end(msg, nl_band);
2227
2228                         if (state->split) {
2229                                 /* start again here */
2230                                 if (state->chan_start)
2231                                         band--;
2232                                 break;
2233                         }
2234                 }
2235                 nla_nest_end(msg, nl_bands);
2236
2237                 if (band < NUM_NL80211_BANDS)
2238                         state->band_start = band + 1;
2239                 else
2240                         state->band_start = 0;
2241
2242                 /* if bands & channels are done, continue outside */
2243                 if (state->band_start == 0 && state->chan_start == 0)
2244                         state->split_start++;
2245                 if (state->split)
2246                         break;
2247                 /* fall through */
2248         case 4:
2249                 nl_cmds = nla_nest_start_noflag(msg,
2250                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2251                 if (!nl_cmds)
2252                         goto nla_put_failure;
2253
2254                 i = nl80211_add_commands_unsplit(rdev, msg);
2255                 if (i < 0)
2256                         goto nla_put_failure;
2257                 if (state->split) {
2258                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2259                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2260                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2261                                 CMD(channel_switch, CHANNEL_SWITCH);
2262                         CMD(set_qos_map, SET_QOS_MAP);
2263                         if (rdev->wiphy.features &
2264                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2265                                 CMD(add_tx_ts, ADD_TX_TS);
2266                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2267                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2268                         CMD(update_ft_ies, UPDATE_FT_IES);
2269                 }
2270 #undef CMD
2271
2272                 nla_nest_end(msg, nl_cmds);
2273                 state->split_start++;
2274                 if (state->split)
2275                         break;
2276                 /* fall through */
2277         case 5:
2278                 if (rdev->ops->remain_on_channel &&
2279                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2280                     nla_put_u32(msg,
2281                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2282                                 rdev->wiphy.max_remain_on_channel_duration))
2283                         goto nla_put_failure;
2284
2285                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2286                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2287                         goto nla_put_failure;
2288
2289                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2290                         goto nla_put_failure;
2291                 state->split_start++;
2292                 if (state->split)
2293                         break;
2294                 /* fall through */
2295         case 6:
2296 #ifdef CONFIG_PM
2297                 if (nl80211_send_wowlan(msg, rdev, state->split))
2298                         goto nla_put_failure;
2299                 state->split_start++;
2300                 if (state->split)
2301                         break;
2302 #else
2303                 state->split_start++;
2304 #endif
2305                 /* fall through */
2306         case 7:
2307                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2308                                         rdev->wiphy.software_iftypes))
2309                         goto nla_put_failure;
2310
2311                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2312                                                    state->split))
2313                         goto nla_put_failure;
2314
2315                 state->split_start++;
2316                 if (state->split)
2317                         break;
2318                 /* fall through */
2319         case 8:
2320                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2321                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2322                                 rdev->wiphy.ap_sme_capa))
2323                         goto nla_put_failure;
2324
2325                 features = rdev->wiphy.features;
2326                 /*
2327                  * We can only add the per-channel limit information if the
2328                  * dump is split, otherwise it makes it too big. Therefore
2329                  * only advertise it in that case.
2330                  */
2331                 if (state->split)
2332                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2333                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2334                         goto nla_put_failure;
2335
2336                 if (rdev->wiphy.ht_capa_mod_mask &&
2337                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2338                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2339                             rdev->wiphy.ht_capa_mod_mask))
2340                         goto nla_put_failure;
2341
2342                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2343                     rdev->wiphy.max_acl_mac_addrs &&
2344                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2345                                 rdev->wiphy.max_acl_mac_addrs))
2346                         goto nla_put_failure;
2347
2348                 /*
2349                  * Any information below this point is only available to
2350                  * applications that can deal with it being split. This
2351                  * helps ensure that newly added capabilities don't break
2352                  * older tools by overrunning their buffers.
2353                  *
2354                  * We still increment split_start so that in the split
2355                  * case we'll continue with more data in the next round,
2356                  * but break unconditionally so unsplit data stops here.
2357                  */
2358                 state->split_start++;
2359                 break;
2360         case 9:
2361                 if (rdev->wiphy.extended_capabilities &&
2362                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2363                              rdev->wiphy.extended_capabilities_len,
2364                              rdev->wiphy.extended_capabilities) ||
2365                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2366                              rdev->wiphy.extended_capabilities_len,
2367                              rdev->wiphy.extended_capabilities_mask)))
2368                         goto nla_put_failure;
2369
2370                 if (rdev->wiphy.vht_capa_mod_mask &&
2371                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2372                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2373                             rdev->wiphy.vht_capa_mod_mask))
2374                         goto nla_put_failure;
2375
2376                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2377                             rdev->wiphy.perm_addr))
2378                         goto nla_put_failure;
2379
2380                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2381                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2382                             rdev->wiphy.addr_mask))
2383                         goto nla_put_failure;
2384
2385                 if (rdev->wiphy.n_addresses > 1) {
2386                         void *attr;
2387
2388                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2389                         if (!attr)
2390                                 goto nla_put_failure;
2391
2392                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2393                                 if (nla_put(msg, i + 1, ETH_ALEN,
2394                                             rdev->wiphy.addresses[i].addr))
2395                                         goto nla_put_failure;
2396
2397                         nla_nest_end(msg, attr);
2398                 }
2399
2400                 state->split_start++;
2401                 break;
2402         case 10:
2403                 if (nl80211_send_coalesce(msg, rdev))
2404                         goto nla_put_failure;
2405
2406                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2407                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2408                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2409                         goto nla_put_failure;
2410
2411                 if (rdev->wiphy.max_ap_assoc_sta &&
2412                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2413                                 rdev->wiphy.max_ap_assoc_sta))
2414                         goto nla_put_failure;
2415
2416                 state->split_start++;
2417                 break;
2418         case 11:
2419                 if (rdev->wiphy.n_vendor_commands) {
2420                         const struct nl80211_vendor_cmd_info *info;
2421                         struct nlattr *nested;
2422
2423                         nested = nla_nest_start_noflag(msg,
2424                                                        NL80211_ATTR_VENDOR_DATA);
2425                         if (!nested)
2426                                 goto nla_put_failure;
2427
2428                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2429                                 info = &rdev->wiphy.vendor_commands[i].info;
2430                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2431                                         goto nla_put_failure;
2432                         }
2433                         nla_nest_end(msg, nested);
2434                 }
2435
2436                 if (rdev->wiphy.n_vendor_events) {
2437                         const struct nl80211_vendor_cmd_info *info;
2438                         struct nlattr *nested;
2439
2440                         nested = nla_nest_start_noflag(msg,
2441                                                        NL80211_ATTR_VENDOR_EVENTS);
2442                         if (!nested)
2443                                 goto nla_put_failure;
2444
2445                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2446                                 info = &rdev->wiphy.vendor_events[i];
2447                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2448                                         goto nla_put_failure;
2449                         }
2450                         nla_nest_end(msg, nested);
2451                 }
2452                 state->split_start++;
2453                 break;
2454         case 12:
2455                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2456                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2457                                rdev->wiphy.max_num_csa_counters))
2458                         goto nla_put_failure;
2459
2460                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2461                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2462                         goto nla_put_failure;
2463
2464                 if (rdev->wiphy.max_sched_scan_reqs &&
2465                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2466                                 rdev->wiphy.max_sched_scan_reqs))
2467                         goto nla_put_failure;
2468
2469                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2470                             sizeof(rdev->wiphy.ext_features),
2471                             rdev->wiphy.ext_features))
2472                         goto nla_put_failure;
2473
2474                 if (rdev->wiphy.bss_select_support) {
2475                         struct nlattr *nested;
2476                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2477
2478                         nested = nla_nest_start_noflag(msg,
2479                                                        NL80211_ATTR_BSS_SELECT);
2480                         if (!nested)
2481                                 goto nla_put_failure;
2482
2483                         i = 0;
2484                         while (bss_select_support) {
2485                                 if ((bss_select_support & 1) &&
2486                                     nla_put_flag(msg, i))
2487                                         goto nla_put_failure;
2488                                 i++;
2489                                 bss_select_support >>= 1;
2490                         }
2491                         nla_nest_end(msg, nested);
2492                 }
2493
2494                 state->split_start++;
2495                 break;
2496         case 13:
2497                 if (rdev->wiphy.num_iftype_ext_capab &&
2498                     rdev->wiphy.iftype_ext_capab) {
2499                         struct nlattr *nested_ext_capab, *nested;
2500
2501                         nested = nla_nest_start_noflag(msg,
2502                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2503                         if (!nested)
2504                                 goto nla_put_failure;
2505
2506                         for (i = state->capa_start;
2507                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2508                                 const struct wiphy_iftype_ext_capab *capab;
2509
2510                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2511
2512                                 nested_ext_capab = nla_nest_start_noflag(msg,
2513                                                                          i);
2514                                 if (!nested_ext_capab ||
2515                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2516                                                 capab->iftype) ||
2517                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2518                                             capab->extended_capabilities_len,
2519                                             capab->extended_capabilities) ||
2520                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2521                                             capab->extended_capabilities_len,
2522                                             capab->extended_capabilities_mask))
2523                                         goto nla_put_failure;
2524
2525                                 nla_nest_end(msg, nested_ext_capab);
2526                                 if (state->split)
2527                                         break;
2528                         }
2529                         nla_nest_end(msg, nested);
2530                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2531                                 state->capa_start = i + 1;
2532                                 break;
2533                         }
2534                 }
2535
2536                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2537                                 rdev->wiphy.nan_supported_bands))
2538                         goto nla_put_failure;
2539
2540                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2541                                             NL80211_EXT_FEATURE_TXQS)) {
2542                         struct cfg80211_txq_stats txqstats = {};
2543                         int res;
2544
2545                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2546                         if (!res &&
2547                             !nl80211_put_txq_stats(msg, &txqstats,
2548                                                    NL80211_ATTR_TXQ_STATS))
2549                                 goto nla_put_failure;
2550
2551                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2552                                         rdev->wiphy.txq_limit))
2553                                 goto nla_put_failure;
2554                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2555                                         rdev->wiphy.txq_memory_limit))
2556                                 goto nla_put_failure;
2557                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2558                                         rdev->wiphy.txq_quantum))
2559                                 goto nla_put_failure;
2560                 }
2561
2562                 state->split_start++;
2563                 break;
2564         case 14:
2565                 if (nl80211_send_pmsr_capa(rdev, msg))
2566                         goto nla_put_failure;
2567
2568                 state->split_start++;
2569                 break;
2570         case 15:
2571                 if (rdev->wiphy.akm_suites &&
2572                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2573                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2574                             rdev->wiphy.akm_suites))
2575                         goto nla_put_failure;
2576
2577                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2578                         goto nla_put_failure;
2579
2580                 if (nl80211_put_tid_config_support(rdev, msg))
2581                         goto nla_put_failure;
2582
2583                 /* done */
2584                 state->split_start = 0;
2585                 break;
2586         }
2587  finish:
2588         genlmsg_end(msg, hdr);
2589         return 0;
2590
2591  nla_put_failure:
2592         genlmsg_cancel(msg, hdr);
2593         return -EMSGSIZE;
2594 }
2595
2596 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2597                                     struct netlink_callback *cb,
2598                                     struct nl80211_dump_wiphy_state *state)
2599 {
2600         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2601         int ret;
2602
2603         if (!tb)
2604                 return -ENOMEM;
2605
2606         ret = nlmsg_parse_deprecated(cb->nlh,
2607                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2608                                      tb, nl80211_fam.maxattr,
2609                                      nl80211_policy, NULL);
2610         /* ignore parse errors for backward compatibility */
2611         if (ret) {
2612                 ret = 0;
2613                 goto out;
2614         }
2615
2616         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2617         if (tb[NL80211_ATTR_WIPHY])
2618                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2619         if (tb[NL80211_ATTR_WDEV])
2620                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2621         if (tb[NL80211_ATTR_IFINDEX]) {
2622                 struct net_device *netdev;
2623                 struct cfg80211_registered_device *rdev;
2624                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2625
2626                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2627                 if (!netdev) {
2628                         ret = -ENODEV;
2629                         goto out;
2630                 }
2631                 if (netdev->ieee80211_ptr) {
2632                         rdev = wiphy_to_rdev(
2633                                 netdev->ieee80211_ptr->wiphy);
2634                         state->filter_wiphy = rdev->wiphy_idx;
2635                 }
2636         }
2637
2638         ret = 0;
2639 out:
2640         kfree(tb);
2641         return ret;
2642 }
2643
2644 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2645 {
2646         int idx = 0, ret;
2647         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2648         struct cfg80211_registered_device *rdev;
2649
2650         rtnl_lock();
2651         if (!state) {
2652                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2653                 if (!state) {
2654                         rtnl_unlock();
2655                         return -ENOMEM;
2656                 }
2657                 state->filter_wiphy = -1;
2658                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2659                 if (ret) {
2660                         kfree(state);
2661                         rtnl_unlock();
2662                         return ret;
2663                 }
2664                 cb->args[0] = (long)state;
2665         }
2666
2667         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2668                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2669                         continue;
2670                 if (++idx <= state->start)
2671                         continue;
2672                 if (state->filter_wiphy != -1 &&
2673                     state->filter_wiphy != rdev->wiphy_idx)
2674                         continue;
2675                 /* attempt to fit multiple wiphy data chunks into the skb */
2676                 do {
2677                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2678                                                  skb,
2679                                                  NETLINK_CB(cb->skb).portid,
2680                                                  cb->nlh->nlmsg_seq,
2681                                                  NLM_F_MULTI, state);
2682                         if (ret < 0) {
2683                                 /*
2684                                  * If sending the wiphy data didn't fit (ENOBUFS
2685                                  * or EMSGSIZE returned), this SKB is still
2686                                  * empty (so it's not too big because another
2687                                  * wiphy dataset is already in the skb) and
2688                                  * we've not tried to adjust the dump allocation
2689                                  * yet ... then adjust the alloc size to be
2690                                  * bigger, and return 1 but with the empty skb.
2691                                  * This results in an empty message being RX'ed
2692                                  * in userspace, but that is ignored.
2693                                  *
2694                                  * We can then retry with the larger buffer.
2695                                  */
2696                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2697                                     !skb->len && !state->split &&
2698                                     cb->min_dump_alloc < 4096) {
2699                                         cb->min_dump_alloc = 4096;
2700                                         state->split_start = 0;
2701                                         rtnl_unlock();
2702                                         return 1;
2703                                 }
2704                                 idx--;
2705                                 break;
2706                         }
2707                 } while (state->split_start > 0);
2708                 break;
2709         }
2710         rtnl_unlock();
2711
2712         state->start = idx;
2713
2714         return skb->len;
2715 }
2716
2717 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2718 {
2719         kfree((void *)cb->args[0]);
2720         return 0;
2721 }
2722
2723 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2724 {
2725         struct sk_buff *msg;
2726         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2727         struct nl80211_dump_wiphy_state state = {};
2728
2729         msg = nlmsg_new(4096, GFP_KERNEL);
2730         if (!msg)
2731                 return -ENOMEM;
2732
2733         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2734                                info->snd_portid, info->snd_seq, 0,
2735                                &state) < 0) {
2736                 nlmsg_free(msg);
2737                 return -ENOBUFS;
2738         }
2739
2740         return genlmsg_reply(msg, info);
2741 }
2742
2743 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2744         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2745         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2746         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2747         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2748         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2749 };
2750
2751 static int parse_txq_params(struct nlattr *tb[],
2752                             struct ieee80211_txq_params *txq_params)
2753 {
2754         u8 ac;
2755
2756         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2757             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2758             !tb[NL80211_TXQ_ATTR_AIFS])
2759                 return -EINVAL;
2760
2761         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2762         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2763         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2764         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2765         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2766
2767         if (ac >= NL80211_NUM_ACS)
2768                 return -EINVAL;
2769         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2770         return 0;
2771 }
2772
2773 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2774 {
2775         /*
2776          * You can only set the channel explicitly for WDS interfaces,
2777          * all others have their channel managed via their respective
2778          * "establish a connection" command (connect, join, ...)
2779          *
2780          * For AP/GO and mesh mode, the channel can be set with the
2781          * channel userspace API, but is only stored and passed to the
2782          * low-level driver when the AP starts or the mesh is joined.
2783          * This is for backward compatibility, userspace can also give
2784          * the channel in the start-ap or join-mesh commands instead.
2785          *
2786          * Monitors are special as they are normally slaved to
2787          * whatever else is going on, so they have their own special
2788          * operation to set the monitor channel if possible.
2789          */
2790         return !wdev ||
2791                 wdev->iftype == NL80211_IFTYPE_AP ||
2792                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2793                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2794                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2795 }
2796
2797 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2798                           struct genl_info *info,
2799                           struct cfg80211_chan_def *chandef)
2800 {
2801         struct netlink_ext_ack *extack = info->extack;
2802         struct nlattr **attrs = info->attrs;
2803         u32 control_freq;
2804
2805         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2806                 return -EINVAL;
2807
2808         control_freq = MHZ_TO_KHZ(
2809                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2810         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2811                 control_freq +=
2812                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2813
2814         memset(chandef, 0, sizeof(*chandef));
2815         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2816         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2817         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2818         chandef->freq1_offset = control_freq % 1000;
2819         chandef->center_freq2 = 0;
2820
2821         /* Primary channel not allowed */
2822         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2823                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2824                                     "Channel is disabled");
2825                 return -EINVAL;
2826         }
2827
2828         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2829                 enum nl80211_channel_type chantype;
2830
2831                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2832
2833                 switch (chantype) {
2834                 case NL80211_CHAN_NO_HT:
2835                 case NL80211_CHAN_HT20:
2836                 case NL80211_CHAN_HT40PLUS:
2837                 case NL80211_CHAN_HT40MINUS:
2838                         cfg80211_chandef_create(chandef, chandef->chan,
2839                                                 chantype);
2840                         /* user input for center_freq is incorrect */
2841                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2842                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2843                                 NL_SET_ERR_MSG_ATTR(extack,
2844                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2845                                                     "bad center frequency 1");
2846                                 return -EINVAL;
2847                         }
2848                         /* center_freq2 must be zero */
2849                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2850                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2851                                 NL_SET_ERR_MSG_ATTR(extack,
2852                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2853                                                     "center frequency 2 can't be used");
2854                                 return -EINVAL;
2855                         }
2856                         break;
2857                 default:
2858                         NL_SET_ERR_MSG_ATTR(extack,
2859                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2860                                             "invalid channel type");
2861                         return -EINVAL;
2862                 }
2863         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2864                 chandef->width =
2865                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2866                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2867                         chandef->center_freq1 =
2868                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2869                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2870                                 chandef->freq1_offset = nla_get_u32(
2871                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2872                         else
2873                                 chandef->freq1_offset = 0;
2874                 }
2875                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2876                         chandef->center_freq2 =
2877                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2878         }
2879
2880         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2881                 chandef->edmg.channels =
2882                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2883
2884                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2885                         chandef->edmg.bw_config =
2886                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2887         } else {
2888                 chandef->edmg.bw_config = 0;
2889                 chandef->edmg.channels = 0;
2890         }
2891
2892         if (!cfg80211_chandef_valid(chandef)) {
2893                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2894                 return -EINVAL;
2895         }
2896
2897         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2898                                      IEEE80211_CHAN_DISABLED)) {
2899                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2900                 return -EINVAL;
2901         }
2902
2903         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2904              chandef->width == NL80211_CHAN_WIDTH_10) &&
2905             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2906                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2907                 return -EINVAL;
2908         }
2909
2910         return 0;
2911 }
2912
2913 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2914                                  struct net_device *dev,
2915                                  struct genl_info *info)
2916 {
2917         struct cfg80211_chan_def chandef;
2918         int result;
2919         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2920         struct wireless_dev *wdev = NULL;
2921
2922         if (dev)
2923                 wdev = dev->ieee80211_ptr;
2924         if (!nl80211_can_set_dev_channel(wdev))
2925                 return -EOPNOTSUPP;
2926         if (wdev)
2927                 iftype = wdev->iftype;
2928
2929         result = nl80211_parse_chandef(rdev, info, &chandef);
2930         if (result)
2931                 return result;
2932
2933         switch (iftype) {
2934         case NL80211_IFTYPE_AP:
2935         case NL80211_IFTYPE_P2P_GO:
2936                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2937                                                    iftype)) {
2938                         result = -EINVAL;
2939                         break;
2940                 }
2941                 if (wdev->beacon_interval) {
2942                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2943                             !(rdev->wiphy.features &
2944                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2945                                 result = -EBUSY;
2946                                 break;
2947                         }
2948
2949                         /* Only allow dynamic channel width changes */
2950                         if (chandef.chan != wdev->preset_chandef.chan) {
2951                                 result = -EBUSY;
2952                                 break;
2953                         }
2954                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2955                         if (result)
2956                                 break;
2957                 }
2958                 wdev->preset_chandef = chandef;
2959                 result = 0;
2960                 break;
2961         case NL80211_IFTYPE_MESH_POINT:
2962                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2963                 break;
2964         case NL80211_IFTYPE_MONITOR:
2965                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2966                 break;
2967         default:
2968                 result = -EINVAL;
2969         }
2970
2971         return result;
2972 }
2973
2974 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2975 {
2976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2977         struct net_device *netdev = info->user_ptr[1];
2978
2979         return __nl80211_set_channel(rdev, netdev, info);
2980 }
2981
2982 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2983 {
2984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2985         struct net_device *dev = info->user_ptr[1];
2986         struct wireless_dev *wdev = dev->ieee80211_ptr;
2987         const u8 *bssid;
2988
2989         if (!info->attrs[NL80211_ATTR_MAC])
2990                 return -EINVAL;
2991
2992         if (netif_running(dev))
2993                 return -EBUSY;
2994
2995         if (!rdev->ops->set_wds_peer)
2996                 return -EOPNOTSUPP;
2997
2998         if (wdev->iftype != NL80211_IFTYPE_WDS)
2999                 return -EOPNOTSUPP;
3000
3001         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3002         return rdev_set_wds_peer(rdev, dev, bssid);
3003 }
3004
3005 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3006 {
3007         struct cfg80211_registered_device *rdev;
3008         struct net_device *netdev = NULL;
3009         struct wireless_dev *wdev;
3010         int result = 0, rem_txq_params = 0;
3011         struct nlattr *nl_txq_params;
3012         u32 changed;
3013         u8 retry_short = 0, retry_long = 0;
3014         u32 frag_threshold = 0, rts_threshold = 0;
3015         u8 coverage_class = 0;
3016         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3017
3018         ASSERT_RTNL();
3019
3020         /*
3021          * Try to find the wiphy and netdev. Normally this
3022          * function shouldn't need the netdev, but this is
3023          * done for backward compatibility -- previously
3024          * setting the channel was done per wiphy, but now
3025          * it is per netdev. Previous userland like hostapd
3026          * also passed a netdev to set_wiphy, so that it is
3027          * possible to let that go to the right netdev!
3028          */
3029
3030         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3031                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3032
3033                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3034                 if (netdev && netdev->ieee80211_ptr)
3035                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3036                 else
3037                         netdev = NULL;
3038         }
3039
3040         if (!netdev) {
3041                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3042                                                   info->attrs);
3043                 if (IS_ERR(rdev))
3044                         return PTR_ERR(rdev);
3045                 wdev = NULL;
3046                 netdev = NULL;
3047                 result = 0;
3048         } else
3049                 wdev = netdev->ieee80211_ptr;
3050
3051         /*
3052          * end workaround code, by now the rdev is available
3053          * and locked, and wdev may or may not be NULL.
3054          */
3055
3056         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3057                 result = cfg80211_dev_rename(
3058                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3059
3060         if (result)
3061                 return result;
3062
3063         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3064                 struct ieee80211_txq_params txq_params;
3065                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3066
3067                 if (!rdev->ops->set_txq_params)
3068                         return -EOPNOTSUPP;
3069
3070                 if (!netdev)
3071                         return -EINVAL;
3072
3073                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3074                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3075                         return -EINVAL;
3076
3077                 if (!netif_running(netdev))
3078                         return -ENETDOWN;
3079
3080                 nla_for_each_nested(nl_txq_params,
3081                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3082                                     rem_txq_params) {
3083                         result = nla_parse_nested_deprecated(tb,
3084                                                              NL80211_TXQ_ATTR_MAX,
3085                                                              nl_txq_params,
3086                                                              txq_params_policy,
3087                                                              info->extack);
3088                         if (result)
3089                                 return result;
3090                         result = parse_txq_params(tb, &txq_params);
3091                         if (result)
3092                                 return result;
3093
3094                         result = rdev_set_txq_params(rdev, netdev,
3095                                                      &txq_params);
3096                         if (result)
3097                                 return result;
3098                 }
3099         }
3100
3101         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3102                 result = __nl80211_set_channel(
3103                         rdev,
3104                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3105                         info);
3106                 if (result)
3107                         return result;
3108         }
3109
3110         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3111                 struct wireless_dev *txp_wdev = wdev;
3112                 enum nl80211_tx_power_setting type;
3113                 int idx, mbm = 0;
3114
3115                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3116                         txp_wdev = NULL;
3117
3118                 if (!rdev->ops->set_tx_power)
3119                         return -EOPNOTSUPP;
3120
3121                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3122                 type = nla_get_u32(info->attrs[idx]);
3123
3124                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3125                     (type != NL80211_TX_POWER_AUTOMATIC))
3126                         return -EINVAL;
3127
3128                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3129                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3130                         mbm = nla_get_u32(info->attrs[idx]);
3131                 }
3132
3133                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3134                 if (result)
3135                         return result;
3136         }
3137
3138         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3139             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3140                 u32 tx_ant, rx_ant;
3141
3142                 if ((!rdev->wiphy.available_antennas_tx &&
3143                      !rdev->wiphy.available_antennas_rx) ||
3144                     !rdev->ops->set_antenna)
3145                         return -EOPNOTSUPP;
3146
3147                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3148                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3149
3150                 /* reject antenna configurations which don't match the
3151                  * available antenna masks, except for the "all" mask */
3152                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3153                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3154                         return -EINVAL;
3155
3156                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3157                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3158
3159                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3160                 if (result)
3161                         return result;
3162         }
3163
3164         changed = 0;
3165
3166         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3167                 retry_short = nla_get_u8(
3168                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3169
3170                 changed |= WIPHY_PARAM_RETRY_SHORT;
3171         }
3172
3173         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3174                 retry_long = nla_get_u8(
3175                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3176
3177                 changed |= WIPHY_PARAM_RETRY_LONG;
3178         }
3179
3180         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3181                 frag_threshold = nla_get_u32(
3182                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3183                 if (frag_threshold < 256)
3184                         return -EINVAL;
3185
3186                 if (frag_threshold != (u32) -1) {
3187                         /*
3188                          * Fragments (apart from the last one) are required to
3189                          * have even length. Make the fragmentation code
3190                          * simpler by stripping LSB should someone try to use
3191                          * odd threshold value.
3192                          */
3193                         frag_threshold &= ~0x1;
3194                 }
3195                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3196         }
3197
3198         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3199                 rts_threshold = nla_get_u32(
3200                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3201                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3202         }
3203
3204         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3205                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3206                         return -EINVAL;
3207
3208                 coverage_class = nla_get_u8(
3209                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3210                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3211         }
3212
3213         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3214                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3215                         return -EOPNOTSUPP;
3216
3217                 changed |= WIPHY_PARAM_DYN_ACK;
3218         }
3219
3220         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3221                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3222                                              NL80211_EXT_FEATURE_TXQS))
3223                         return -EOPNOTSUPP;
3224                 txq_limit = nla_get_u32(
3225                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3226                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3227         }
3228
3229         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3230                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3231                                              NL80211_EXT_FEATURE_TXQS))
3232                         return -EOPNOTSUPP;
3233                 txq_memory_limit = nla_get_u32(
3234                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3235                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3236         }
3237
3238         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3239                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3240                                              NL80211_EXT_FEATURE_TXQS))
3241                         return -EOPNOTSUPP;
3242                 txq_quantum = nla_get_u32(
3243                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3244                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3245         }
3246
3247         if (changed) {
3248                 u8 old_retry_short, old_retry_long;
3249                 u32 old_frag_threshold, old_rts_threshold;
3250                 u8 old_coverage_class;
3251                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3252
3253                 if (!rdev->ops->set_wiphy_params)
3254                         return -EOPNOTSUPP;
3255
3256                 old_retry_short = rdev->wiphy.retry_short;
3257                 old_retry_long = rdev->wiphy.retry_long;
3258                 old_frag_threshold = rdev->wiphy.frag_threshold;
3259                 old_rts_threshold = rdev->wiphy.rts_threshold;
3260                 old_coverage_class = rdev->wiphy.coverage_class;
3261                 old_txq_limit = rdev->wiphy.txq_limit;
3262                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3263                 old_txq_quantum = rdev->wiphy.txq_quantum;
3264
3265                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3266                         rdev->wiphy.retry_short = retry_short;
3267                 if (changed & WIPHY_PARAM_RETRY_LONG)
3268                         rdev->wiphy.retry_long = retry_long;
3269                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3270                         rdev->wiphy.frag_threshold = frag_threshold;
3271                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3272                         rdev->wiphy.rts_threshold = rts_threshold;
3273                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3274                         rdev->wiphy.coverage_class = coverage_class;
3275                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3276                         rdev->wiphy.txq_limit = txq_limit;
3277                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3278                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3279                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3280                         rdev->wiphy.txq_quantum = txq_quantum;
3281
3282                 result = rdev_set_wiphy_params(rdev, changed);
3283                 if (result) {
3284                         rdev->wiphy.retry_short = old_retry_short;
3285                         rdev->wiphy.retry_long = old_retry_long;
3286                         rdev->wiphy.frag_threshold = old_frag_threshold;
3287                         rdev->wiphy.rts_threshold = old_rts_threshold;
3288                         rdev->wiphy.coverage_class = old_coverage_class;
3289                         rdev->wiphy.txq_limit = old_txq_limit;
3290                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3291                         rdev->wiphy.txq_quantum = old_txq_quantum;
3292                         return result;
3293                 }
3294         }
3295         return 0;
3296 }
3297
3298 static int nl80211_send_chandef(struct sk_buff *msg,
3299                                 const struct cfg80211_chan_def *chandef)
3300 {
3301         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3302                 return -EINVAL;
3303
3304         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3305                         chandef->chan->center_freq))
3306                 return -ENOBUFS;
3307         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3308                         chandef->chan->freq_offset))
3309                 return -ENOBUFS;
3310         switch (chandef->width) {
3311         case NL80211_CHAN_WIDTH_20_NOHT:
3312         case NL80211_CHAN_WIDTH_20:
3313         case NL80211_CHAN_WIDTH_40:
3314                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3315                                 cfg80211_get_chandef_type(chandef)))
3316                         return -ENOBUFS;
3317                 break;
3318         default:
3319                 break;
3320         }
3321         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3322                 return -ENOBUFS;
3323         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3324                 return -ENOBUFS;
3325         if (chandef->center_freq2 &&
3326             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3327                 return -ENOBUFS;
3328         return 0;
3329 }
3330
3331 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3332                               struct cfg80211_registered_device *rdev,
3333                               struct wireless_dev *wdev,
3334                               enum nl80211_commands cmd)
3335 {
3336         struct net_device *dev = wdev->netdev;
3337         void *hdr;
3338
3339         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3340                 cmd != NL80211_CMD_DEL_INTERFACE &&
3341                 cmd != NL80211_CMD_SET_INTERFACE);
3342
3343         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3344         if (!hdr)
3345                 return -1;
3346
3347         if (dev &&
3348             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3349              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3350                 goto nla_put_failure;
3351
3352         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3353             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3354             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3355                               NL80211_ATTR_PAD) ||
3356             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3357             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3358                         rdev->devlist_generation ^
3359                         (cfg80211_rdev_list_generation << 2)) ||
3360             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3361                 goto nla_put_failure;
3362
3363         if (rdev->ops->get_channel) {
3364                 int ret;
3365                 struct cfg80211_chan_def chandef = {};
3366
3367                 ret = rdev_get_channel(rdev, wdev, &chandef);
3368                 if (ret == 0) {
3369                         if (nl80211_send_chandef(msg, &chandef))
3370                                 goto nla_put_failure;
3371                 }
3372         }
3373
3374         if (rdev->ops->get_tx_power) {
3375                 int dbm, ret;
3376
3377                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3378                 if (ret == 0 &&
3379                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3380                                 DBM_TO_MBM(dbm)))
3381                         goto nla_put_failure;
3382         }
3383
3384         wdev_lock(wdev);
3385         switch (wdev->iftype) {
3386         case NL80211_IFTYPE_AP:
3387                 if (wdev->ssid_len &&
3388                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3389                         goto nla_put_failure_locked;
3390                 break;
3391         case NL80211_IFTYPE_STATION:
3392         case NL80211_IFTYPE_P2P_CLIENT:
3393         case NL80211_IFTYPE_ADHOC: {
3394                 const u8 *ssid_ie;
3395                 if (!wdev->current_bss)
3396                         break;
3397                 rcu_read_lock();
3398                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3399                                                WLAN_EID_SSID);
3400                 if (ssid_ie &&
3401                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3402                         goto nla_put_failure_rcu_locked;
3403                 rcu_read_unlock();
3404                 break;
3405                 }
3406         default:
3407                 /* nothing */
3408                 break;
3409         }
3410         wdev_unlock(wdev);
3411
3412         if (rdev->ops->get_txq_stats) {
3413                 struct cfg80211_txq_stats txqstats = {};
3414                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3415
3416                 if (ret == 0 &&
3417                     !nl80211_put_txq_stats(msg, &txqstats,
3418                                            NL80211_ATTR_TXQ_STATS))
3419                         goto nla_put_failure;
3420         }
3421
3422         genlmsg_end(msg, hdr);
3423         return 0;
3424
3425  nla_put_failure_rcu_locked:
3426         rcu_read_unlock();
3427  nla_put_failure_locked:
3428         wdev_unlock(wdev);
3429  nla_put_failure:
3430         genlmsg_cancel(msg, hdr);
3431         return -EMSGSIZE;
3432 }
3433
3434 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3435 {
3436         int wp_idx = 0;
3437         int if_idx = 0;
3438         int wp_start = cb->args[0];
3439         int if_start = cb->args[1];
3440         int filter_wiphy = -1;
3441         struct cfg80211_registered_device *rdev;
3442         struct wireless_dev *wdev;
3443         int ret;
3444
3445         rtnl_lock();
3446         if (!cb->args[2]) {
3447                 struct nl80211_dump_wiphy_state state = {
3448                         .filter_wiphy = -1,
3449                 };
3450
3451                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3452                 if (ret)
3453                         goto out_unlock;
3454
3455                 filter_wiphy = state.filter_wiphy;
3456
3457                 /*
3458                  * if filtering, set cb->args[2] to +1 since 0 is the default
3459                  * value needed to determine that parsing is necessary.
3460                  */
3461                 if (filter_wiphy >= 0)
3462                         cb->args[2] = filter_wiphy + 1;
3463                 else
3464                         cb->args[2] = -1;
3465         } else if (cb->args[2] > 0) {
3466                 filter_wiphy = cb->args[2] - 1;
3467         }
3468
3469         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3470                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3471                         continue;
3472                 if (wp_idx < wp_start) {
3473                         wp_idx++;
3474                         continue;
3475                 }
3476
3477                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3478                         continue;
3479
3480                 if_idx = 0;
3481
3482                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3483                         if (if_idx < if_start) {
3484                                 if_idx++;
3485                                 continue;
3486                         }
3487                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3488                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3489                                                rdev, wdev,
3490                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3491                                 goto out;
3492                         }
3493                         if_idx++;
3494                 }
3495
3496                 wp_idx++;
3497         }
3498  out:
3499         cb->args[0] = wp_idx;
3500         cb->args[1] = if_idx;
3501
3502         ret = skb->len;
3503  out_unlock:
3504         rtnl_unlock();
3505
3506         return ret;
3507 }
3508
3509 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3510 {
3511         struct sk_buff *msg;
3512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3513         struct wireless_dev *wdev = info->user_ptr[1];
3514
3515         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3516         if (!msg)
3517                 return -ENOMEM;
3518
3519         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3520                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3521                 nlmsg_free(msg);
3522                 return -ENOBUFS;
3523         }
3524
3525         return genlmsg_reply(msg, info);
3526 }
3527
3528 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3529         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3530         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3531         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3532         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3533         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3534         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3535 };
3536
3537 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3538 {
3539         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3540         int flag;
3541
3542         *mntrflags = 0;
3543
3544         if (!nla)
3545                 return -EINVAL;
3546
3547         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3548                 return -EINVAL;
3549
3550         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3551                 if (flags[flag])
3552                         *mntrflags |= (1<<flag);
3553
3554         *mntrflags |= MONITOR_FLAG_CHANGED;
3555
3556         return 0;
3557 }
3558
3559 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3560                                      enum nl80211_iftype type,
3561                                      struct genl_info *info,
3562                                      struct vif_params *params)
3563 {
3564         bool change = false;
3565         int err;
3566
3567         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3568                 if (type != NL80211_IFTYPE_MONITOR)
3569                         return -EINVAL;
3570
3571                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3572                                           &params->flags);
3573                 if (err)
3574                         return err;
3575
3576                 change = true;
3577         }
3578
3579         if (params->flags & MONITOR_FLAG_ACTIVE &&
3580             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3581                 return -EOPNOTSUPP;
3582
3583         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3584                 const u8 *mumimo_groups;
3585                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3586
3587                 if (type != NL80211_IFTYPE_MONITOR)
3588                         return -EINVAL;
3589
3590                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3591                         return -EOPNOTSUPP;
3592
3593                 mumimo_groups =
3594                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3595
3596                 /* bits 0 and 63 are reserved and must be zero */
3597                 if ((mumimo_groups[0] & BIT(0)) ||
3598                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3599                         return -EINVAL;
3600
3601                 params->vht_mumimo_groups = mumimo_groups;
3602                 change = true;
3603         }
3604
3605         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3606                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3607
3608                 if (type != NL80211_IFTYPE_MONITOR)
3609                         return -EINVAL;
3610
3611                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3612                         return -EOPNOTSUPP;
3613
3614                 params->vht_mumimo_follow_addr =
3615                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3616                 change = true;
3617         }
3618
3619         return change ? 1 : 0;
3620 }
3621
3622 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3623                                struct net_device *netdev, u8 use_4addr,
3624                                enum nl80211_iftype iftype)
3625 {
3626         if (!use_4addr) {
3627                 if (netdev && netif_is_bridge_port(netdev))
3628                         return -EBUSY;
3629                 return 0;
3630         }
3631
3632         switch (iftype) {
3633         case NL80211_IFTYPE_AP_VLAN:
3634                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3635                         return 0;
3636                 break;
3637         case NL80211_IFTYPE_STATION:
3638                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3639                         return 0;
3640                 break;
3641         default:
3642                 break;
3643         }
3644
3645         return -EOPNOTSUPP;
3646 }
3647
3648 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3649 {
3650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3651         struct vif_params params;
3652         int err;
3653         enum nl80211_iftype otype, ntype;
3654         struct net_device *dev = info->user_ptr[1];
3655         bool change = false;
3656
3657         memset(&params, 0, sizeof(params));
3658
3659         otype = ntype = dev->ieee80211_ptr->iftype;
3660
3661         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3662                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3663                 if (otype != ntype)
3664                         change = true;
3665         }
3666
3667         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3668                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3669
3670                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3671                         return -EINVAL;
3672                 if (netif_running(dev))
3673                         return -EBUSY;
3674
3675                 wdev_lock(wdev);
3676                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3677                              IEEE80211_MAX_MESH_ID_LEN);
3678                 wdev->mesh_id_up_len =
3679                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3680                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3681                        wdev->mesh_id_up_len);
3682                 wdev_unlock(wdev);
3683         }
3684
3685         if (info->attrs[NL80211_ATTR_4ADDR]) {
3686                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3687                 change = true;
3688                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3689                 if (err)
3690                         return err;
3691         } else {
3692                 params.use_4addr = -1;
3693         }
3694
3695         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3696         if (err < 0)
3697                 return err;
3698         if (err > 0)
3699                 change = true;
3700
3701         if (change)
3702                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3703         else
3704                 err = 0;
3705
3706         if (!err && params.use_4addr != -1)
3707                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3708
3709         if (change && !err) {
3710                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3711
3712                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3713         }
3714
3715         return err;
3716 }
3717
3718 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3719 {
3720         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3721         struct vif_params params;
3722         struct wireless_dev *wdev;
3723         struct sk_buff *msg;
3724         int err;
3725         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3726
3727         /* to avoid failing a new interface creation due to pending removal */
3728         cfg80211_destroy_ifaces(rdev);
3729
3730         memset(&params, 0, sizeof(params));
3731
3732         if (!info->attrs[NL80211_ATTR_IFNAME])
3733                 return -EINVAL;
3734
3735         if (info->attrs[NL80211_ATTR_IFTYPE])
3736                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3737
3738         if (!rdev->ops->add_virtual_intf)
3739                 return -EOPNOTSUPP;
3740
3741         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3742              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3743             info->attrs[NL80211_ATTR_MAC]) {
3744                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3745                            ETH_ALEN);
3746                 if (!is_valid_ether_addr(params.macaddr))
3747                         return -EADDRNOTAVAIL;
3748         }
3749
3750         if (info->attrs[NL80211_ATTR_4ADDR]) {
3751                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3752                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3753                 if (err)
3754                         return err;
3755         }
3756
3757         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3758                 return -EOPNOTSUPP;
3759
3760         err = nl80211_parse_mon_options(rdev, type, info, &params);
3761         if (err < 0)
3762                 return err;
3763
3764         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3765         if (!msg)
3766                 return -ENOMEM;
3767
3768         wdev = rdev_add_virtual_intf(rdev,
3769                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3770                                 NET_NAME_USER, type, &params);
3771         if (WARN_ON(!wdev)) {
3772                 nlmsg_free(msg);
3773                 return -EPROTO;
3774         } else if (IS_ERR(wdev)) {
3775                 nlmsg_free(msg);
3776                 return PTR_ERR(wdev);
3777         }
3778
3779         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3780                 wdev->owner_nlportid = info->snd_portid;
3781
3782         switch (type) {
3783         case NL80211_IFTYPE_MESH_POINT:
3784                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3785                         break;
3786                 wdev_lock(wdev);
3787                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3788                              IEEE80211_MAX_MESH_ID_LEN);
3789                 wdev->mesh_id_up_len =
3790                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3791                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3792                        wdev->mesh_id_up_len);
3793                 wdev_unlock(wdev);
3794                 break;
3795         case NL80211_IFTYPE_NAN:
3796         case NL80211_IFTYPE_P2P_DEVICE:
3797                 /*
3798                  * P2P Device and NAN do not have a netdev, so don't go
3799                  * through the netdev notifier and must be added here
3800                  */
3801                 cfg80211_init_wdev(rdev, wdev);
3802                 break;
3803         default:
3804                 break;
3805         }
3806
3807         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3808                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3809                 nlmsg_free(msg);
3810                 return -ENOBUFS;
3811         }
3812
3813         return genlmsg_reply(msg, info);
3814 }
3815
3816 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3817 {
3818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3819         struct wireless_dev *wdev = info->user_ptr[1];
3820
3821         if (!rdev->ops->del_virtual_intf)
3822                 return -EOPNOTSUPP;
3823
3824         /*
3825          * If we remove a wireless device without a netdev then clear
3826          * user_ptr[1] so that nl80211_post_doit won't dereference it
3827          * to check if it needs to do dev_put(). Otherwise it crashes
3828          * since the wdev has been freed, unlike with a netdev where
3829          * we need the dev_put() for the netdev to really be freed.
3830          */
3831         if (!wdev->netdev)
3832                 info->user_ptr[1] = NULL;
3833
3834         return rdev_del_virtual_intf(rdev, wdev);
3835 }
3836
3837 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3838 {
3839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3840         struct net_device *dev = info->user_ptr[1];
3841         u16 noack_map;
3842
3843         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3844                 return -EINVAL;
3845
3846         if (!rdev->ops->set_noack_map)
3847                 return -EOPNOTSUPP;
3848
3849         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3850
3851         return rdev_set_noack_map(rdev, dev, noack_map);
3852 }
3853
3854 struct get_key_cookie {
3855         struct sk_buff *msg;
3856         int error;
3857         int idx;
3858 };
3859
3860 static void get_key_callback(void *c, struct key_params *params)
3861 {
3862         struct nlattr *key;
3863         struct get_key_cookie *cookie = c;
3864
3865         if ((params->key &&
3866              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3867                      params->key_len, params->key)) ||
3868             (params->seq &&
3869              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3870                      params->seq_len, params->seq)) ||
3871             (params->cipher &&
3872              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3873                          params->cipher)))
3874                 goto nla_put_failure;
3875
3876         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3877         if (!key)
3878                 goto nla_put_failure;
3879
3880         if ((params->key &&
3881              nla_put(cookie->msg, NL80211_KEY_DATA,
3882                      params->key_len, params->key)) ||
3883             (params->seq &&
3884              nla_put(cookie->msg, NL80211_KEY_SEQ,
3885                      params->seq_len, params->seq)) ||
3886             (params->cipher &&
3887              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3888                          params->cipher)))
3889                 goto nla_put_failure;
3890
3891         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3892                 goto nla_put_failure;
3893
3894         nla_nest_end(cookie->msg, key);
3895
3896         return;
3897  nla_put_failure:
3898         cookie->error = 1;
3899 }
3900
3901 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3902 {
3903         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3904         int err;
3905         struct net_device *dev = info->user_ptr[1];
3906         u8 key_idx = 0;
3907         const u8 *mac_addr = NULL;
3908         bool pairwise;
3909         struct get_key_cookie cookie = {
3910                 .error = 0,
3911         };
3912         void *hdr;
3913         struct sk_buff *msg;
3914         bool bigtk_support = false;
3915
3916         if (wiphy_ext_feature_isset(&rdev->wiphy,
3917                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
3918                 bigtk_support = true;
3919
3920         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
3921              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
3922             wiphy_ext_feature_isset(&rdev->wiphy,
3923                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
3924                 bigtk_support = true;
3925
3926         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3927                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3928
3929                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
3930                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
3931                         return -EINVAL;
3932                 }
3933         }
3934
3935         if (info->attrs[NL80211_ATTR_MAC])
3936                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3937
3938         pairwise = !!mac_addr;
3939         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3940                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3941
3942                 if (kt != NL80211_KEYTYPE_GROUP &&
3943                     kt != NL80211_KEYTYPE_PAIRWISE)
3944                         return -EINVAL;
3945                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3946         }
3947
3948         if (!rdev->ops->get_key)
3949                 return -EOPNOTSUPP;
3950
3951         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3952                 return -ENOENT;
3953
3954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3955         if (!msg)
3956                 return -ENOMEM;
3957
3958         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3959                              NL80211_CMD_NEW_KEY);
3960         if (!hdr)
3961                 goto nla_put_failure;
3962
3963         cookie.msg = msg;
3964         cookie.idx = key_idx;
3965
3966         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3967             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3968                 goto nla_put_failure;
3969         if (mac_addr &&
3970             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3971                 goto nla_put_failure;
3972
3973         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3974                            get_key_callback);
3975
3976         if (err)
3977                 goto free_msg;
3978
3979         if (cookie.error)
3980                 goto nla_put_failure;
3981
3982         genlmsg_end(msg, hdr);
3983         return genlmsg_reply(msg, info);
3984
3985  nla_put_failure:
3986         err = -ENOBUFS;
3987  free_msg:
3988         nlmsg_free(msg);
3989         return err;
3990 }
3991
3992 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3993 {
3994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3995         struct key_parse key;
3996         int err;
3997         struct net_device *dev = info->user_ptr[1];
3998
3999         err = nl80211_parse_key(info, &key);
4000         if (err)
4001                 return err;
4002
4003         if (key.idx < 0)
4004                 return -EINVAL;
4005
4006         /* Only support setting default key and
4007          * Extended Key ID action NL80211_KEY_SET_TX.
4008          */
4009         if (!key.def && !key.defmgmt && !key.defbeacon &&
4010             !(key.p.mode == NL80211_KEY_SET_TX))
4011                 return -EINVAL;
4012
4013         wdev_lock(dev->ieee80211_ptr);
4014
4015         if (key.def) {
4016                 if (!rdev->ops->set_default_key) {
4017                         err = -EOPNOTSUPP;
4018                         goto out;
4019                 }
4020
4021                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4022                 if (err)
4023                         goto out;
4024
4025                 err = rdev_set_default_key(rdev, dev, key.idx,
4026                                                  key.def_uni, key.def_multi);
4027
4028                 if (err)
4029                         goto out;
4030
4031 #ifdef CONFIG_CFG80211_WEXT
4032                 dev->ieee80211_ptr->wext.default_key = key.idx;
4033 #endif
4034         } else if (key.defmgmt) {
4035                 if (key.def_uni || !key.def_multi) {
4036                         err = -EINVAL;
4037                         goto out;
4038                 }
4039
4040                 if (!rdev->ops->set_default_mgmt_key) {
4041                         err = -EOPNOTSUPP;
4042                         goto out;
4043                 }
4044
4045                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4046                 if (err)
4047                         goto out;
4048
4049                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4050                 if (err)
4051                         goto out;
4052
4053 #ifdef CONFIG_CFG80211_WEXT
4054                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4055 #endif
4056         } else if (key.defbeacon) {
4057                 if (key.def_uni || !key.def_multi) {
4058                         err = -EINVAL;
4059                         goto out;
4060                 }
4061
4062                 if (!rdev->ops->set_default_beacon_key) {
4063                         err = -EOPNOTSUPP;
4064                         goto out;
4065                 }
4066
4067                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4068                 if (err)
4069                         goto out;
4070
4071                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4072                 if (err)
4073                         goto out;
4074         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4075                    wiphy_ext_feature_isset(&rdev->wiphy,
4076                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4077                 u8 *mac_addr = NULL;
4078
4079                 if (info->attrs[NL80211_ATTR_MAC])
4080                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4081
4082                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4083                         err = -EINVAL;
4084                         goto out;
4085                 }
4086
4087                 err = rdev_add_key(rdev, dev, key.idx,
4088                                    NL80211_KEYTYPE_PAIRWISE,
4089                                    mac_addr, &key.p);
4090         } else {
4091                 err = -EINVAL;
4092         }
4093  out:
4094         wdev_unlock(dev->ieee80211_ptr);
4095
4096         return err;
4097 }
4098
4099 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4100 {
4101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4102         int err;
4103         struct net_device *dev = info->user_ptr[1];
4104         struct key_parse key;
4105         const u8 *mac_addr = NULL;
4106
4107         err = nl80211_parse_key(info, &key);
4108         if (err)
4109                 return err;
4110
4111         if (!key.p.key) {
4112                 GENL_SET_ERR_MSG(info, "no key");
4113                 return -EINVAL;
4114         }
4115
4116         if (info->attrs[NL80211_ATTR_MAC])
4117                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4118
4119         if (key.type == -1) {
4120                 if (mac_addr)
4121                         key.type = NL80211_KEYTYPE_PAIRWISE;
4122                 else
4123                         key.type = NL80211_KEYTYPE_GROUP;
4124         }
4125
4126         /* for now */
4127         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4128             key.type != NL80211_KEYTYPE_GROUP) {
4129                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4130                 return -EINVAL;
4131         }
4132
4133         if (key.type == NL80211_KEYTYPE_GROUP &&
4134             info->attrs[NL80211_ATTR_VLAN_ID])
4135                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4136
4137         if (!rdev->ops->add_key)
4138                 return -EOPNOTSUPP;
4139
4140         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4141                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4142                                            mac_addr)) {
4143                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4144                 return -EINVAL;
4145         }
4146
4147         wdev_lock(dev->ieee80211_ptr);
4148         err = nl80211_key_allowed(dev->ieee80211_ptr);
4149         if (err)
4150                 GENL_SET_ERR_MSG(info, "key not allowed");
4151         if (!err) {
4152                 err = rdev_add_key(rdev, dev, key.idx,
4153                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4154                                     mac_addr, &key.p);
4155                 if (err)
4156                         GENL_SET_ERR_MSG(info, "key addition failed");
4157         }
4158         wdev_unlock(dev->ieee80211_ptr);
4159
4160         return err;
4161 }
4162
4163 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4164 {
4165         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4166         int err;
4167         struct net_device *dev = info->user_ptr[1];
4168         u8 *mac_addr = NULL;
4169         struct key_parse key;
4170
4171         err = nl80211_parse_key(info, &key);
4172         if (err)
4173                 return err;
4174
4175         if (info->attrs[NL80211_ATTR_MAC])
4176                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4177
4178         if (key.type == -1) {
4179                 if (mac_addr)
4180                         key.type = NL80211_KEYTYPE_PAIRWISE;
4181                 else
4182                         key.type = NL80211_KEYTYPE_GROUP;
4183         }
4184
4185         /* for now */
4186         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4187             key.type != NL80211_KEYTYPE_GROUP)
4188                 return -EINVAL;
4189
4190         if (!rdev->ops->del_key)
4191                 return -EOPNOTSUPP;
4192
4193         wdev_lock(dev->ieee80211_ptr);
4194         err = nl80211_key_allowed(dev->ieee80211_ptr);
4195
4196         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4197             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4198                 err = -ENOENT;
4199
4200         if (!err)
4201                 err = rdev_del_key(rdev, dev, key.idx,
4202                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4203                                    mac_addr);
4204
4205 #ifdef CONFIG_CFG80211_WEXT
4206         if (!err) {
4207                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4208                         dev->ieee80211_ptr->wext.default_key = -1;
4209                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4210                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4211         }
4212 #endif
4213         wdev_unlock(dev->ieee80211_ptr);
4214
4215         return err;
4216 }
4217
4218 /* This function returns an error or the number of nested attributes */
4219 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4220 {
4221         struct nlattr *attr;
4222         int n_entries = 0, tmp;
4223
4224         nla_for_each_nested(attr, nl_attr, tmp) {
4225                 if (nla_len(attr) != ETH_ALEN)
4226                         return -EINVAL;
4227
4228                 n_entries++;
4229         }
4230
4231         return n_entries;
4232 }
4233
4234 /*
4235  * This function parses ACL information and allocates memory for ACL data.
4236  * On successful return, the calling function is responsible to free the
4237  * ACL buffer returned by this function.
4238  */
4239 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4240                                                 struct genl_info *info)
4241 {
4242         enum nl80211_acl_policy acl_policy;
4243         struct nlattr *attr;
4244         struct cfg80211_acl_data *acl;
4245         int i = 0, n_entries, tmp;
4246
4247         if (!wiphy->max_acl_mac_addrs)
4248                 return ERR_PTR(-EOPNOTSUPP);
4249
4250         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4251                 return ERR_PTR(-EINVAL);
4252
4253         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4254         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4255             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4256                 return ERR_PTR(-EINVAL);
4257
4258         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4259                 return ERR_PTR(-EINVAL);
4260
4261         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4262         if (n_entries < 0)
4263                 return ERR_PTR(n_entries);
4264
4265         if (n_entries > wiphy->max_acl_mac_addrs)
4266                 return ERR_PTR(-ENOTSUPP);
4267
4268         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4269         if (!acl)
4270                 return ERR_PTR(-ENOMEM);
4271
4272         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4273                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4274                 i++;
4275         }
4276
4277         acl->n_acl_entries = n_entries;
4278         acl->acl_policy = acl_policy;
4279
4280         return acl;
4281 }
4282
4283 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4284 {
4285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4286         struct net_device *dev = info->user_ptr[1];
4287         struct cfg80211_acl_data *acl;
4288         int err;
4289
4290         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4291             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4292                 return -EOPNOTSUPP;
4293
4294         if (!dev->ieee80211_ptr->beacon_interval)
4295                 return -EINVAL;
4296
4297         acl = parse_acl_data(&rdev->wiphy, info);
4298         if (IS_ERR(acl))
4299                 return PTR_ERR(acl);
4300
4301         err = rdev_set_mac_acl(rdev, dev, acl);
4302
4303         kfree(acl);
4304
4305         return err;
4306 }
4307
4308 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4309                            u8 *rates, u8 rates_len)
4310 {
4311         u8 i;
4312         u32 mask = 0;
4313
4314         for (i = 0; i < rates_len; i++) {
4315                 int rate = (rates[i] & 0x7f) * 5;
4316                 int ridx;
4317
4318                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4319                         struct ieee80211_rate *srate =
4320                                 &sband->bitrates[ridx];
4321                         if (rate == srate->bitrate) {
4322                                 mask |= 1 << ridx;
4323                                 break;
4324                         }
4325                 }
4326                 if (ridx == sband->n_bitrates)
4327                         return 0; /* rate not found */
4328         }
4329
4330         return mask;
4331 }
4332
4333 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4334                                u8 *rates, u8 rates_len,
4335                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4336 {
4337         u8 i;
4338
4339         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4340
4341         for (i = 0; i < rates_len; i++) {
4342                 int ridx, rbit;
4343
4344                 ridx = rates[i] / 8;
4345                 rbit = BIT(rates[i] % 8);
4346
4347                 /* check validity */
4348                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4349                         return false;
4350
4351                 /* check availability */
4352                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4353                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4354                         mcs[ridx] |= rbit;
4355                 else
4356                         return false;
4357         }
4358
4359         return true;
4360 }
4361
4362 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4363 {
4364         u16 mcs_mask = 0;
4365
4366         switch (vht_mcs_map) {
4367         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4368                 break;
4369         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4370                 mcs_mask = 0x00FF;
4371                 break;
4372         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4373                 mcs_mask = 0x01FF;
4374                 break;
4375         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4376                 mcs_mask = 0x03FF;
4377                 break;
4378         default:
4379                 break;
4380         }
4381
4382         return mcs_mask;
4383 }
4384
4385 static void vht_build_mcs_mask(u16 vht_mcs_map,
4386                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4387 {
4388         u8 nss;
4389
4390         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4391                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4392                 vht_mcs_map >>= 2;
4393         }
4394 }
4395
4396 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4397                              struct nl80211_txrate_vht *txrate,
4398                              u16 mcs[NL80211_VHT_NSS_MAX])
4399 {
4400         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4401         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4402         u8 i;
4403
4404         if (!sband->vht_cap.vht_supported)
4405                 return false;
4406
4407         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4408
4409         /* Build vht_mcs_mask from VHT capabilities */
4410         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4411
4412         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4413                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4414                         mcs[i] = txrate->mcs[i];
4415                 else
4416                         return false;
4417         }
4418
4419         return true;
4420 }
4421
4422 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4423                                          struct nlattr *attrs[],
4424                                          enum nl80211_attrs attr,
4425                                          struct cfg80211_bitrate_mask *mask)
4426 {
4427         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4429         int rem, i;
4430         struct nlattr *tx_rates;
4431         struct ieee80211_supported_band *sband;
4432         u16 vht_tx_mcs_map;
4433
4434         memset(mask, 0, sizeof(*mask));
4435         /* Default to all rates enabled */
4436         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4437                 sband = rdev->wiphy.bands[i];
4438
4439                 if (!sband)
4440                         continue;
4441
4442                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4443                 memcpy(mask->control[i].ht_mcs,
4444                        sband->ht_cap.mcs.rx_mask,
4445                        sizeof(mask->control[i].ht_mcs));
4446
4447                 if (!sband->vht_cap.vht_supported)
4448                         continue;
4449
4450                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4451                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4452         }
4453
4454         /* if no rates are given set it back to the defaults */
4455         if (!attrs[attr])
4456                 goto out;
4457
4458         /* The nested attribute uses enum nl80211_band as the index. This maps
4459          * directly to the enum nl80211_band values used in cfg80211.
4460          */
4461         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4462         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4463                 enum nl80211_band band = nla_type(tx_rates);
4464                 int err;
4465
4466                 if (band < 0 || band >= NUM_NL80211_BANDS)
4467                         return -EINVAL;
4468                 sband = rdev->wiphy.bands[band];
4469                 if (sband == NULL)
4470                         return -EINVAL;
4471                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4472                                                   tx_rates,
4473                                                   nl80211_txattr_policy,
4474                                                   info->extack);
4475                 if (err)
4476                         return err;
4477                 if (tb[NL80211_TXRATE_LEGACY]) {
4478                         mask->control[band].legacy = rateset_to_mask(
4479                                 sband,
4480                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4481                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4482                         if ((mask->control[band].legacy == 0) &&
4483                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4484                                 return -EINVAL;
4485                 }
4486                 if (tb[NL80211_TXRATE_HT]) {
4487                         if (!ht_rateset_to_mask(
4488                                         sband,
4489                                         nla_data(tb[NL80211_TXRATE_HT]),
4490                                         nla_len(tb[NL80211_TXRATE_HT]),
4491                                         mask->control[band].ht_mcs))
4492                                 return -EINVAL;
4493                 }
4494                 if (tb[NL80211_TXRATE_VHT]) {
4495                         if (!vht_set_mcs_mask(
4496                                         sband,
4497                                         nla_data(tb[NL80211_TXRATE_VHT]),
4498                                         mask->control[band].vht_mcs))
4499                                 return -EINVAL;
4500                 }
4501                 if (tb[NL80211_TXRATE_GI]) {
4502                         mask->control[band].gi =
4503                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4504                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4505                                 return -EINVAL;
4506                 }
4507
4508                 if (mask->control[band].legacy == 0) {
4509                         /* don't allow empty legacy rates if HT or VHT
4510                          * are not even supported.
4511                          */
4512                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4513                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4514                                 return -EINVAL;
4515
4516                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4517                                 if (mask->control[band].ht_mcs[i])
4518                                         goto out;
4519
4520                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4521                                 if (mask->control[band].vht_mcs[i])
4522                                         goto out;
4523
4524                         /* legacy and mcs rates may not be both empty */
4525                         return -EINVAL;
4526                 }
4527         }
4528
4529 out:
4530         return 0;
4531 }
4532
4533 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4534                                    enum nl80211_band band,
4535                                    struct cfg80211_bitrate_mask *beacon_rate)
4536 {
4537         u32 count_ht, count_vht, i;
4538         u32 rate = beacon_rate->control[band].legacy;
4539
4540         /* Allow only one rate */
4541         if (hweight32(rate) > 1)
4542                 return -EINVAL;
4543
4544         count_ht = 0;
4545         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4546                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4547                         return -EINVAL;
4548                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4549                         count_ht++;
4550                         if (count_ht > 1)
4551                                 return -EINVAL;
4552                 }
4553                 if (count_ht && rate)
4554                         return -EINVAL;
4555         }
4556
4557         count_vht = 0;
4558         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4559                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4560                         return -EINVAL;
4561                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4562                         count_vht++;
4563                         if (count_vht > 1)
4564                                 return -EINVAL;
4565                 }
4566                 if (count_vht && rate)
4567                         return -EINVAL;
4568         }
4569
4570         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4571                 return -EINVAL;
4572
4573         if (rate &&
4574             !wiphy_ext_feature_isset(&rdev->wiphy,
4575                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4576                 return -EINVAL;
4577         if (count_ht &&
4578             !wiphy_ext_feature_isset(&rdev->wiphy,
4579                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4580                 return -EINVAL;
4581         if (count_vht &&
4582             !wiphy_ext_feature_isset(&rdev->wiphy,
4583                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4584                 return -EINVAL;
4585
4586         return 0;
4587 }
4588
4589 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4590                                 struct nlattr *attrs[],
4591                                 struct cfg80211_beacon_data *bcn)
4592 {
4593         bool haveinfo = false;
4594         int err;
4595
4596         memset(bcn, 0, sizeof(*bcn));
4597
4598         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4599                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4600                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4601                 if (!bcn->head_len)
4602                         return -EINVAL;
4603                 haveinfo = true;
4604         }
4605
4606         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4607                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4608                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4609                 haveinfo = true;
4610         }
4611
4612         if (!haveinfo)
4613                 return -EINVAL;
4614
4615         if (attrs[NL80211_ATTR_IE]) {
4616                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4617                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4618         }
4619
4620         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4621                 bcn->proberesp_ies =
4622                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4623                 bcn->proberesp_ies_len =
4624                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4625         }
4626
4627         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4628                 bcn->assocresp_ies =
4629                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4630                 bcn->assocresp_ies_len =
4631                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4632         }
4633
4634         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4635                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4636                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4637         }
4638
4639         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4640                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4641
4642                 err = nla_parse_nested_deprecated(tb,
4643                                                   NL80211_FTM_RESP_ATTR_MAX,
4644                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4645                                                   NULL, NULL);
4646                 if (err)
4647                         return err;
4648
4649                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4650                     wiphy_ext_feature_isset(&rdev->wiphy,
4651                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4652                         bcn->ftm_responder = 1;
4653                 else
4654                         return -EOPNOTSUPP;
4655
4656                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4657                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4658                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4659                 }
4660
4661                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4662                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4663                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4664                 }
4665         } else {
4666                 bcn->ftm_responder = -1;
4667         }
4668
4669         return 0;
4670 }
4671
4672 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4673                                     struct ieee80211_he_obss_pd *he_obss_pd)
4674 {
4675         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4676         int err;
4677
4678         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4679                                he_obss_pd_policy, NULL);
4680         if (err)
4681                 return err;
4682
4683         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4684             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4685                 return -EINVAL;
4686
4687         he_obss_pd->min_offset =
4688                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4689         he_obss_pd->max_offset =
4690                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4691
4692         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4693                 return -EINVAL;
4694
4695         he_obss_pd->enable = true;
4696
4697         return 0;
4698 }
4699
4700 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4701                                       struct cfg80211_he_bss_color *he_bss_color)
4702 {
4703         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4704         int err;
4705
4706         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4707                                he_bss_color_policy, NULL);
4708         if (err)
4709                 return err;
4710
4711         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4712                 return -EINVAL;
4713
4714         he_bss_color->color =
4715                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4716         he_bss_color->disabled =
4717                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4718         he_bss_color->partial =
4719                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4720
4721         return 0;
4722 }
4723
4724 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4725                                             const u8 *rates)
4726 {
4727         int i;
4728
4729         if (!rates)
4730                 return;
4731
4732         for (i = 0; i < rates[1]; i++) {
4733                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4734                         params->ht_required = true;
4735                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4736                         params->vht_required = true;
4737                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
4738                         params->he_required = true;
4739         }
4740 }
4741
4742 /*
4743  * Since the nl80211 API didn't include, from the beginning, attributes about
4744  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4745  * benefit of drivers that rebuild IEs in the firmware.
4746  */
4747 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4748 {
4749         const struct cfg80211_beacon_data *bcn = &params->beacon;
4750         size_t ies_len = bcn->tail_len;
4751         const u8 *ies = bcn->tail;
4752         const u8 *rates;
4753         const u8 *cap;
4754
4755         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4756         nl80211_check_ap_rate_selectors(params, rates);
4757
4758         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4759         nl80211_check_ap_rate_selectors(params, rates);
4760
4761         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4762         if (cap && cap[1] >= sizeof(*params->ht_cap))
4763                 params->ht_cap = (void *)(cap + 2);
4764         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4765         if (cap && cap[1] >= sizeof(*params->vht_cap))
4766                 params->vht_cap = (void *)(cap + 2);
4767         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4768         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4769                 params->he_cap = (void *)(cap + 3);
4770         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4771         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4772                 params->he_oper = (void *)(cap + 3);
4773 }
4774
4775 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4776                                    struct cfg80211_ap_settings *params)
4777 {
4778         struct wireless_dev *wdev;
4779         bool ret = false;
4780
4781         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4782                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4783                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4784                         continue;
4785
4786                 if (!wdev->preset_chandef.chan)
4787                         continue;
4788
4789                 params->chandef = wdev->preset_chandef;
4790                 ret = true;
4791                 break;
4792         }
4793
4794         return ret;
4795 }
4796
4797 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4798                                     enum nl80211_auth_type auth_type,
4799                                     enum nl80211_commands cmd)
4800 {
4801         if (auth_type > NL80211_AUTHTYPE_MAX)
4802                 return false;
4803
4804         switch (cmd) {
4805         case NL80211_CMD_AUTHENTICATE:
4806                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4807                     auth_type == NL80211_AUTHTYPE_SAE)
4808                         return false;
4809                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4810                                              NL80211_EXT_FEATURE_FILS_STA) &&
4811                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4812                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4813                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4814                         return false;
4815                 return true;
4816         case NL80211_CMD_CONNECT:
4817                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4818                     !wiphy_ext_feature_isset(&rdev->wiphy,
4819                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4820                     auth_type == NL80211_AUTHTYPE_SAE)
4821                         return false;
4822
4823                 /* FILS with SK PFS or PK not supported yet */
4824                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4825                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4826                         return false;
4827                 if (!wiphy_ext_feature_isset(
4828                             &rdev->wiphy,
4829                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4830                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4831                         return false;
4832                 return true;
4833         case NL80211_CMD_START_AP:
4834                 /* SAE not supported yet */
4835                 if (auth_type == NL80211_AUTHTYPE_SAE)
4836                         return false;
4837                 /* FILS not supported yet */
4838                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4839                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4840                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4841                         return false;
4842                 return true;
4843         default:
4844                 return false;
4845         }
4846 }
4847
4848 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4849 {
4850         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4851         struct net_device *dev = info->user_ptr[1];
4852         struct wireless_dev *wdev = dev->ieee80211_ptr;
4853         struct cfg80211_ap_settings params;
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 (!rdev->ops->start_ap)
4861                 return -EOPNOTSUPP;
4862
4863         if (wdev->beacon_interval)
4864                 return -EALREADY;
4865
4866         memset(&params, 0, sizeof(params));
4867
4868         /* these are required for START_AP */
4869         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4870             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4871             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4872                 return -EINVAL;
4873
4874         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4875         if (err)
4876                 return err;
4877
4878         params.beacon_interval =
4879                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4880         params.dtim_period =
4881                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4882
4883         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4884                                            params.beacon_interval);
4885         if (err)
4886                 return err;
4887
4888         /*
4889          * In theory, some of these attributes should be required here
4890          * but since they were not used when the command was originally
4891          * added, keep them optional for old user space programs to let
4892          * them continue to work with drivers that do not need the
4893          * additional information -- drivers must check!
4894          */
4895         if (info->attrs[NL80211_ATTR_SSID]) {
4896                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4897                 params.ssid_len =
4898                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4899                 if (params.ssid_len == 0 ||
4900                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4901                         return -EINVAL;
4902         }
4903
4904         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4905                 params.hidden_ssid = nla_get_u32(
4906                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4907
4908         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4909
4910         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4911                 params.auth_type = nla_get_u32(
4912                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4913                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4914                                              NL80211_CMD_START_AP))
4915                         return -EINVAL;
4916         } else
4917                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4918
4919         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4920                                       NL80211_MAX_NR_CIPHER_SUITES);
4921         if (err)
4922                 return err;
4923
4924         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4925                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4926                         return -EOPNOTSUPP;
4927                 params.inactivity_timeout = nla_get_u16(
4928                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4929         }
4930
4931         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4932                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4933                         return -EINVAL;
4934                 params.p2p_ctwindow =
4935                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4936                 if (params.p2p_ctwindow != 0 &&
4937                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4938                         return -EINVAL;
4939         }
4940
4941         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4942                 u8 tmp;
4943
4944                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4945                         return -EINVAL;
4946                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4947                 params.p2p_opp_ps = tmp;
4948                 if (params.p2p_opp_ps != 0 &&
4949                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4950                         return -EINVAL;
4951         }
4952
4953         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4954                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4955                 if (err)
4956                         return err;
4957         } else if (wdev->preset_chandef.chan) {
4958                 params.chandef = wdev->preset_chandef;
4959         } else if (!nl80211_get_ap_channel(rdev, &params))
4960                 return -EINVAL;
4961
4962         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4963                                            wdev->iftype))
4964                 return -EINVAL;
4965
4966         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4967                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
4968                                                     NL80211_ATTR_TX_RATES,
4969                                                     &params.beacon_rate);
4970                 if (err)
4971                         return err;
4972
4973                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4974                                               &params.beacon_rate);
4975                 if (err)
4976                         return err;
4977         }
4978
4979         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4980                 params.smps_mode =
4981                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4982                 switch (params.smps_mode) {
4983                 case NL80211_SMPS_OFF:
4984                         break;
4985                 case NL80211_SMPS_STATIC:
4986                         if (!(rdev->wiphy.features &
4987                               NL80211_FEATURE_STATIC_SMPS))
4988                                 return -EINVAL;
4989                         break;
4990                 case NL80211_SMPS_DYNAMIC:
4991                         if (!(rdev->wiphy.features &
4992                               NL80211_FEATURE_DYNAMIC_SMPS))
4993                                 return -EINVAL;
4994                         break;
4995                 default:
4996                         return -EINVAL;
4997                 }
4998         } else {
4999                 params.smps_mode = NL80211_SMPS_OFF;
5000         }
5001
5002         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5003         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5004                 return -EOPNOTSUPP;
5005
5006         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5007                 params.acl = parse_acl_data(&rdev->wiphy, info);
5008                 if (IS_ERR(params.acl))
5009                         return PTR_ERR(params.acl);
5010         }
5011
5012         params.twt_responder =
5013                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5014
5015         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5016                 err = nl80211_parse_he_obss_pd(
5017                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5018                                         &params.he_obss_pd);
5019                 if (err)
5020                         goto out;
5021         }
5022
5023         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5024                 err = nl80211_parse_he_bss_color(
5025                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5026                                         &params.he_bss_color);
5027                 if (err)
5028                         goto out;
5029         }
5030
5031         nl80211_calculate_ap_params(&params);
5032
5033         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5034                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5035
5036         wdev_lock(wdev);
5037         err = rdev_start_ap(rdev, dev, &params);
5038         if (!err) {
5039                 wdev->preset_chandef = params.chandef;
5040                 wdev->beacon_interval = params.beacon_interval;
5041                 wdev->chandef = params.chandef;
5042                 wdev->ssid_len = params.ssid_len;
5043                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5044
5045                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5046                         wdev->conn_owner_nlportid = info->snd_portid;
5047         }
5048         wdev_unlock(wdev);
5049
5050 out:
5051         kfree(params.acl);
5052
5053         return err;
5054 }
5055
5056 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5057 {
5058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5059         struct net_device *dev = info->user_ptr[1];
5060         struct wireless_dev *wdev = dev->ieee80211_ptr;
5061         struct cfg80211_beacon_data params;
5062         int err;
5063
5064         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5065             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5066                 return -EOPNOTSUPP;
5067
5068         if (!rdev->ops->change_beacon)
5069                 return -EOPNOTSUPP;
5070
5071         if (!wdev->beacon_interval)
5072                 return -EINVAL;
5073
5074         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5075         if (err)
5076                 return err;
5077
5078         wdev_lock(wdev);
5079         err = rdev_change_beacon(rdev, dev, &params);
5080         wdev_unlock(wdev);
5081
5082         return err;
5083 }
5084
5085 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5086 {
5087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5088         struct net_device *dev = info->user_ptr[1];
5089
5090         return cfg80211_stop_ap(rdev, dev, false);
5091 }
5092
5093 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5094         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5095         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5096         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5097         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5098         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5099         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5100 };
5101
5102 static int parse_station_flags(struct genl_info *info,
5103                                enum nl80211_iftype iftype,
5104                                struct station_parameters *params)
5105 {
5106         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5107         struct nlattr *nla;
5108         int flag;
5109
5110         /*
5111          * Try parsing the new attribute first so userspace
5112          * can specify both for older kernels.
5113          */
5114         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5115         if (nla) {
5116                 struct nl80211_sta_flag_update *sta_flags;
5117
5118                 sta_flags = nla_data(nla);
5119                 params->sta_flags_mask = sta_flags->mask;
5120                 params->sta_flags_set = sta_flags->set;
5121                 params->sta_flags_set &= params->sta_flags_mask;
5122                 if ((params->sta_flags_mask |
5123                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5124                         return -EINVAL;
5125                 return 0;
5126         }
5127
5128         /* if present, parse the old attribute */
5129
5130         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5131         if (!nla)
5132                 return 0;
5133
5134         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5135                 return -EINVAL;
5136
5137         /*
5138          * Only allow certain flags for interface types so that
5139          * other attributes are silently ignored. Remember that
5140          * this is backward compatibility code with old userspace
5141          * and shouldn't be hit in other cases anyway.
5142          */
5143         switch (iftype) {
5144         case NL80211_IFTYPE_AP:
5145         case NL80211_IFTYPE_AP_VLAN:
5146         case NL80211_IFTYPE_P2P_GO:
5147                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5148                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5149                                          BIT(NL80211_STA_FLAG_WME) |
5150                                          BIT(NL80211_STA_FLAG_MFP);
5151                 break;
5152         case NL80211_IFTYPE_P2P_CLIENT:
5153         case NL80211_IFTYPE_STATION:
5154                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5155                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5156                 break;
5157         case NL80211_IFTYPE_MESH_POINT:
5158                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5159                                          BIT(NL80211_STA_FLAG_MFP) |
5160                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5161                 break;
5162         default:
5163                 return -EINVAL;
5164         }
5165
5166         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5167                 if (flags[flag]) {
5168                         params->sta_flags_set |= (1<<flag);
5169
5170                         /* no longer support new API additions in old API */
5171                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5172                                 return -EINVAL;
5173                 }
5174         }
5175
5176         return 0;
5177 }
5178
5179 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5180 {
5181         struct nlattr *rate;
5182         u32 bitrate;
5183         u16 bitrate_compat;
5184         enum nl80211_rate_info rate_flg;
5185
5186         rate = nla_nest_start_noflag(msg, attr);
5187         if (!rate)
5188                 return false;
5189
5190         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5191         bitrate = cfg80211_calculate_bitrate(info);
5192         /* report 16-bit bitrate only if we can */
5193         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5194         if (bitrate > 0 &&
5195             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5196                 return false;
5197         if (bitrate_compat > 0 &&
5198             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5199                 return false;
5200
5201         switch (info->bw) {
5202         case RATE_INFO_BW_5:
5203                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5204                 break;
5205         case RATE_INFO_BW_10:
5206                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5207                 break;
5208         default:
5209                 WARN_ON(1);
5210                 /* fall through */
5211         case RATE_INFO_BW_20:
5212                 rate_flg = 0;
5213                 break;
5214         case RATE_INFO_BW_40:
5215                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5216                 break;
5217         case RATE_INFO_BW_80:
5218                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5219                 break;
5220         case RATE_INFO_BW_160:
5221                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5222                 break;
5223         case RATE_INFO_BW_HE_RU:
5224                 rate_flg = 0;
5225                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5226         }
5227
5228         if (rate_flg && nla_put_flag(msg, rate_flg))
5229                 return false;
5230
5231         if (info->flags & RATE_INFO_FLAGS_MCS) {
5232                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5233                         return false;
5234                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5235                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5236                         return false;
5237         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5238                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5239                         return false;
5240                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5241                         return false;
5242                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5243                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5244                         return false;
5245         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5246                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5247                         return false;
5248                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5249                         return false;
5250                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5251                         return false;
5252                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5253                         return false;
5254                 if (info->bw == RATE_INFO_BW_HE_RU &&
5255                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5256                                info->he_ru_alloc))
5257                         return false;
5258         }
5259
5260         nla_nest_end(msg, rate);
5261         return true;
5262 }
5263
5264 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5265                                int id)
5266 {
5267         void *attr;
5268         int i = 0;
5269
5270         if (!mask)
5271                 return true;
5272
5273         attr = nla_nest_start_noflag(msg, id);
5274         if (!attr)
5275                 return false;
5276
5277         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5278                 if (!(mask & BIT(i)))
5279                         continue;
5280
5281                 if (nla_put_u8(msg, i, signal[i]))
5282                         return false;
5283         }
5284
5285         nla_nest_end(msg, attr);
5286
5287         return true;
5288 }
5289
5290 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5291                                 u32 seq, int flags,
5292                                 struct cfg80211_registered_device *rdev,
5293                                 struct net_device *dev,
5294                                 const u8 *mac_addr, struct station_info *sinfo)
5295 {
5296         void *hdr;
5297         struct nlattr *sinfoattr, *bss_param;
5298
5299         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5300         if (!hdr) {
5301                 cfg80211_sinfo_release_content(sinfo);
5302                 return -1;
5303         }
5304
5305         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5306             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5307             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5308                 goto nla_put_failure;
5309
5310         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5311         if (!sinfoattr)
5312                 goto nla_put_failure;
5313
5314 #define PUT_SINFO(attr, memb, type) do {                                \
5315         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5316         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5317             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5318                              sinfo->memb))                              \
5319                 goto nla_put_failure;                                   \
5320         } while (0)
5321 #define PUT_SINFO_U64(attr, memb) do {                                  \
5322         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5323             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5324                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5325                 goto nla_put_failure;                                   \
5326         } while (0)
5327
5328         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5329         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5330         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5331
5332         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5333                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5334             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5335                         (u32)sinfo->rx_bytes))
5336                 goto nla_put_failure;
5337
5338         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5339                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5340             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5341                         (u32)sinfo->tx_bytes))
5342                 goto nla_put_failure;
5343
5344         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5345         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5346         PUT_SINFO(LLID, llid, u16);
5347         PUT_SINFO(PLID, plid, u16);
5348         PUT_SINFO(PLINK_STATE, plink_state, u8);
5349         PUT_SINFO_U64(RX_DURATION, rx_duration);
5350         PUT_SINFO_U64(TX_DURATION, tx_duration);
5351
5352         if (wiphy_ext_feature_isset(&rdev->wiphy,
5353                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5354                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5355
5356         switch (rdev->wiphy.signal_type) {
5357         case CFG80211_SIGNAL_TYPE_MBM:
5358                 PUT_SINFO(SIGNAL, signal, u8);
5359                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5360                 break;
5361         default:
5362                 break;
5363         }
5364         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5365                 if (!nl80211_put_signal(msg, sinfo->chains,
5366                                         sinfo->chain_signal,
5367                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5368                         goto nla_put_failure;
5369         }
5370         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5371                 if (!nl80211_put_signal(msg, sinfo->chains,
5372                                         sinfo->chain_signal_avg,
5373                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5374                         goto nla_put_failure;
5375         }
5376         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5377                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5378                                           NL80211_STA_INFO_TX_BITRATE))
5379                         goto nla_put_failure;
5380         }
5381         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5382                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5383                                           NL80211_STA_INFO_RX_BITRATE))
5384                         goto nla_put_failure;
5385         }
5386
5387         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5388         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5389         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5390         PUT_SINFO(TX_FAILED, tx_failed, u32);
5391         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5392         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5393         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5394         PUT_SINFO(LOCAL_PM, local_pm, u32);
5395         PUT_SINFO(PEER_PM, peer_pm, u32);
5396         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5397         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5398
5399         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5400                 bss_param = nla_nest_start_noflag(msg,
5401                                                   NL80211_STA_INFO_BSS_PARAM);
5402                 if (!bss_param)
5403                         goto nla_put_failure;
5404
5405                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5406                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5407                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5408                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5409                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5410                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5411                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5412                                sinfo->bss_param.dtim_period) ||
5413                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5414                                 sinfo->bss_param.beacon_interval))
5415                         goto nla_put_failure;
5416
5417                 nla_nest_end(msg, bss_param);
5418         }
5419         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5420             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5421                     sizeof(struct nl80211_sta_flag_update),
5422                     &sinfo->sta_flags))
5423                 goto nla_put_failure;
5424
5425         PUT_SINFO_U64(T_OFFSET, t_offset);
5426         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5427         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5428         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5429         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5430         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5431         if (wiphy_ext_feature_isset(&rdev->wiphy,
5432                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5433                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5434                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5435         }
5436
5437 #undef PUT_SINFO
5438 #undef PUT_SINFO_U64
5439
5440         if (sinfo->pertid) {
5441                 struct nlattr *tidsattr;
5442                 int tid;
5443
5444                 tidsattr = nla_nest_start_noflag(msg,
5445                                                  NL80211_STA_INFO_TID_STATS);
5446                 if (!tidsattr)
5447                         goto nla_put_failure;
5448
5449                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5450                         struct cfg80211_tid_stats *tidstats;
5451                         struct nlattr *tidattr;
5452
5453                         tidstats = &sinfo->pertid[tid];
5454
5455                         if (!tidstats->filled)
5456                                 continue;
5457
5458                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5459                         if (!tidattr)
5460                                 goto nla_put_failure;
5461
5462 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5463         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5464             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5465                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5466                 goto nla_put_failure;                                   \
5467         } while (0)
5468
5469                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5470                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5471                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5472                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5473
5474 #undef PUT_TIDVAL_U64
5475                         if ((tidstats->filled &
5476                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5477                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5478                                                    NL80211_TID_STATS_TXQ_STATS))
5479                                 goto nla_put_failure;
5480
5481                         nla_nest_end(msg, tidattr);
5482                 }
5483
5484                 nla_nest_end(msg, tidsattr);
5485         }
5486
5487         nla_nest_end(msg, sinfoattr);
5488
5489         if (sinfo->assoc_req_ies_len &&
5490             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5491                     sinfo->assoc_req_ies))
5492                 goto nla_put_failure;
5493
5494         cfg80211_sinfo_release_content(sinfo);
5495         genlmsg_end(msg, hdr);
5496         return 0;
5497
5498  nla_put_failure:
5499         cfg80211_sinfo_release_content(sinfo);
5500         genlmsg_cancel(msg, hdr);
5501         return -EMSGSIZE;
5502 }
5503
5504 static int nl80211_dump_station(struct sk_buff *skb,
5505                                 struct netlink_callback *cb)
5506 {
5507         struct station_info sinfo;
5508         struct cfg80211_registered_device *rdev;
5509         struct wireless_dev *wdev;
5510         u8 mac_addr[ETH_ALEN];
5511         int sta_idx = cb->args[2];
5512         int err;
5513
5514         rtnl_lock();
5515         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5516         if (err)
5517                 goto out_err;
5518
5519         if (!wdev->netdev) {
5520                 err = -EINVAL;
5521                 goto out_err;
5522         }
5523
5524         if (!rdev->ops->dump_station) {
5525                 err = -EOPNOTSUPP;
5526                 goto out_err;
5527         }
5528
5529         while (1) {
5530                 memset(&sinfo, 0, sizeof(sinfo));
5531                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5532                                         mac_addr, &sinfo);
5533                 if (err == -ENOENT)
5534                         break;
5535                 if (err)
5536                         goto out_err;
5537
5538                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5539                                 NETLINK_CB(cb->skb).portid,
5540                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5541                                 rdev, wdev->netdev, mac_addr,
5542                                 &sinfo) < 0)
5543                         goto out;
5544
5545                 sta_idx++;
5546         }
5547
5548  out:
5549         cb->args[2] = sta_idx;
5550         err = skb->len;
5551  out_err:
5552         rtnl_unlock();
5553
5554         return err;
5555 }
5556
5557 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5558 {
5559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5560         struct net_device *dev = info->user_ptr[1];
5561         struct station_info sinfo;
5562         struct sk_buff *msg;
5563         u8 *mac_addr = NULL;
5564         int err;
5565
5566         memset(&sinfo, 0, sizeof(sinfo));
5567
5568         if (!info->attrs[NL80211_ATTR_MAC])
5569                 return -EINVAL;
5570
5571         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5572
5573         if (!rdev->ops->get_station)
5574                 return -EOPNOTSUPP;
5575
5576         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5577         if (err)
5578                 return err;
5579
5580         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5581         if (!msg) {
5582                 cfg80211_sinfo_release_content(&sinfo);
5583                 return -ENOMEM;
5584         }
5585
5586         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5587                                  info->snd_portid, info->snd_seq, 0,
5588                                  rdev, dev, mac_addr, &sinfo) < 0) {
5589                 nlmsg_free(msg);
5590                 return -ENOBUFS;
5591         }
5592
5593         return genlmsg_reply(msg, info);
5594 }
5595
5596 int cfg80211_check_station_change(struct wiphy *wiphy,
5597                                   struct station_parameters *params,
5598                                   enum cfg80211_station_type statype)
5599 {
5600         if (params->listen_interval != -1 &&
5601             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5602                 return -EINVAL;
5603
5604         if (params->support_p2p_ps != -1 &&
5605             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5606                 return -EINVAL;
5607
5608         if (params->aid &&
5609             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5610             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5611                 return -EINVAL;
5612
5613         /* When you run into this, adjust the code below for the new flag */
5614         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5615
5616         switch (statype) {
5617         case CFG80211_STA_MESH_PEER_KERNEL:
5618         case CFG80211_STA_MESH_PEER_USER:
5619                 /*
5620                  * No ignoring the TDLS flag here -- the userspace mesh
5621                  * code doesn't have the bug of including TDLS in the
5622                  * mask everywhere.
5623                  */
5624                 if (params->sta_flags_mask &
5625                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5626                                   BIT(NL80211_STA_FLAG_MFP) |
5627                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5628                         return -EINVAL;
5629                 break;
5630         case CFG80211_STA_TDLS_PEER_SETUP:
5631         case CFG80211_STA_TDLS_PEER_ACTIVE:
5632                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5633                         return -EINVAL;
5634                 /* ignore since it can't change */
5635                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5636                 break;
5637         default:
5638                 /* disallow mesh-specific things */
5639                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5640                         return -EINVAL;
5641                 if (params->local_pm)
5642                         return -EINVAL;
5643                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5644                         return -EINVAL;
5645         }
5646
5647         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5648             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5649                 /* TDLS can't be set, ... */
5650                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5651                         return -EINVAL;
5652                 /*
5653                  * ... but don't bother the driver with it. This works around
5654                  * a hostapd/wpa_supplicant issue -- it always includes the
5655                  * TLDS_PEER flag in the mask even for AP mode.
5656                  */
5657                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5658         }
5659
5660         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5661             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5662                 /* reject other things that can't change */
5663                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5664                         return -EINVAL;
5665                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5666                         return -EINVAL;
5667                 if (params->supported_rates)
5668                         return -EINVAL;
5669                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5670                     params->he_capa)
5671                         return -EINVAL;
5672         }
5673
5674         if (statype != CFG80211_STA_AP_CLIENT &&
5675             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5676                 if (params->vlan)
5677                         return -EINVAL;
5678         }
5679
5680         switch (statype) {
5681         case CFG80211_STA_AP_MLME_CLIENT:
5682                 /* Use this only for authorizing/unauthorizing a station */
5683                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5684                         return -EOPNOTSUPP;
5685                 break;
5686         case CFG80211_STA_AP_CLIENT:
5687         case CFG80211_STA_AP_CLIENT_UNASSOC:
5688                 /* accept only the listed bits */
5689                 if (params->sta_flags_mask &
5690                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5691                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5692                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5693                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5694                                   BIT(NL80211_STA_FLAG_WME) |
5695                                   BIT(NL80211_STA_FLAG_MFP)))
5696                         return -EINVAL;
5697
5698                 /* but authenticated/associated only if driver handles it */
5699                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5700                     params->sta_flags_mask &
5701                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5702                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5703                         return -EINVAL;
5704                 break;
5705         case CFG80211_STA_IBSS:
5706         case CFG80211_STA_AP_STA:
5707                 /* reject any changes other than AUTHORIZED */
5708                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5709                         return -EINVAL;
5710                 break;
5711         case CFG80211_STA_TDLS_PEER_SETUP:
5712                 /* reject any changes other than AUTHORIZED or WME */
5713                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5714                                                BIT(NL80211_STA_FLAG_WME)))
5715                         return -EINVAL;
5716                 /* force (at least) rates when authorizing */
5717                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5718                     !params->supported_rates)
5719                         return -EINVAL;
5720                 break;
5721         case CFG80211_STA_TDLS_PEER_ACTIVE:
5722                 /* reject any changes */
5723                 return -EINVAL;
5724         case CFG80211_STA_MESH_PEER_KERNEL:
5725                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5726                         return -EINVAL;
5727                 break;
5728         case CFG80211_STA_MESH_PEER_USER:
5729                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5730                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5731                         return -EINVAL;
5732                 break;
5733         }
5734
5735         /*
5736          * Older kernel versions ignored this attribute entirely, so don't
5737          * reject attempts to update it but mark it as unused instead so the
5738          * driver won't look at the data.
5739          */
5740         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5741             statype != CFG80211_STA_TDLS_PEER_SETUP)
5742                 params->opmode_notif_used = false;
5743
5744         return 0;
5745 }
5746 EXPORT_SYMBOL(cfg80211_check_station_change);
5747
5748 /*
5749  * Get vlan interface making sure it is running and on the right wiphy.
5750  */
5751 static struct net_device *get_vlan(struct genl_info *info,
5752                                    struct cfg80211_registered_device *rdev)
5753 {
5754         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5755         struct net_device *v;
5756         int ret;
5757
5758         if (!vlanattr)
5759                 return NULL;
5760
5761         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5762         if (!v)
5763                 return ERR_PTR(-ENODEV);
5764
5765         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5766                 ret = -EINVAL;
5767                 goto error;
5768         }
5769
5770         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5771             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5772             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5773                 ret = -EINVAL;
5774                 goto error;
5775         }
5776
5777         if (!netif_running(v)) {
5778                 ret = -ENETDOWN;
5779                 goto error;
5780         }
5781
5782         return v;
5783  error:
5784         dev_put(v);
5785         return ERR_PTR(ret);
5786 }
5787
5788 static const struct nla_policy
5789 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5790         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5791         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5792 };
5793
5794 static int nl80211_parse_sta_wme(struct genl_info *info,
5795                                  struct station_parameters *params)
5796 {
5797         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5798         struct nlattr *nla;
5799         int err;
5800
5801         /* parse WME attributes if present */
5802         if (!info->attrs[NL80211_ATTR_STA_WME])
5803                 return 0;
5804
5805         nla = info->attrs[NL80211_ATTR_STA_WME];
5806         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5807                                           nl80211_sta_wme_policy,
5808                                           info->extack);
5809         if (err)
5810                 return err;
5811
5812         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5813                 params->uapsd_queues = nla_get_u8(
5814                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5815         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5816                 return -EINVAL;
5817
5818         if (tb[NL80211_STA_WME_MAX_SP])
5819                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5820
5821         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5822                 return -EINVAL;
5823
5824         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5825
5826         return 0;
5827 }
5828
5829 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5830                                       struct station_parameters *params)
5831 {
5832         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5833                 params->supported_channels =
5834                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5835                 params->supported_channels_len =
5836                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5837                 /*
5838                  * Need to include at least one (first channel, number of
5839                  * channels) tuple for each subband, and must have proper
5840                  * tuples for the rest of the data as well.
5841                  */
5842                 if (params->supported_channels_len < 2)
5843                         return -EINVAL;
5844                 if (params->supported_channels_len % 2)
5845                         return -EINVAL;
5846         }
5847
5848         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5849                 params->supported_oper_classes =
5850                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5851                 params->supported_oper_classes_len =
5852                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5853                 /*
5854                  * The value of the Length field of the Supported Operating
5855                  * Classes element is between 2 and 253.
5856                  */
5857                 if (params->supported_oper_classes_len < 2 ||
5858                     params->supported_oper_classes_len > 253)
5859                         return -EINVAL;
5860         }
5861         return 0;
5862 }
5863
5864 static int nl80211_set_station_tdls(struct genl_info *info,
5865                                     struct station_parameters *params)
5866 {
5867         int err;
5868         /* Dummy STA entry gets updated once the peer capabilities are known */
5869         if (info->attrs[NL80211_ATTR_PEER_AID])
5870                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5871         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5872                 params->ht_capa =
5873                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5874         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5875                 params->vht_capa =
5876                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5877         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5878                 params->he_capa =
5879                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5880                 params->he_capa_len =
5881                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5882
5883                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5884                         return -EINVAL;
5885         }
5886
5887         err = nl80211_parse_sta_channel_info(info, params);
5888         if (err)
5889                 return err;
5890
5891         return nl80211_parse_sta_wme(info, params);
5892 }
5893
5894 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5895                                              struct station_parameters *params)
5896 {
5897         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5898         int idx;
5899
5900         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5901                 if (!rdev->ops->set_tx_power ||
5902                     !wiphy_ext_feature_isset(&rdev->wiphy,
5903                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5904                         return -EOPNOTSUPP;
5905
5906                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5907                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5908
5909                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5910                         idx = NL80211_ATTR_STA_TX_POWER;
5911
5912                         if (info->attrs[idx])
5913                                 params->txpwr.power =
5914                                         nla_get_s16(info->attrs[idx]);
5915                         else
5916                                 return -EINVAL;
5917                 }
5918                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5919         }
5920
5921         return 0;
5922 }
5923
5924 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5925 {
5926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5927         struct net_device *dev = info->user_ptr[1];
5928         struct station_parameters params;
5929         u8 *mac_addr;
5930         int err;
5931
5932         memset(&params, 0, sizeof(params));
5933
5934         if (!rdev->ops->change_station)
5935                 return -EOPNOTSUPP;
5936
5937         /*
5938          * AID and listen_interval properties can be set only for unassociated
5939          * station. Include these parameters here and will check them in
5940          * cfg80211_check_station_change().
5941          */
5942         if (info->attrs[NL80211_ATTR_STA_AID])
5943                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5944
5945         if (info->attrs[NL80211_ATTR_VLAN_ID])
5946                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5947
5948         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5949                 params.listen_interval =
5950                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5951         else
5952                 params.listen_interval = -1;
5953
5954         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5955                 params.support_p2p_ps =
5956                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5957         else
5958                 params.support_p2p_ps = -1;
5959
5960         if (!info->attrs[NL80211_ATTR_MAC])
5961                 return -EINVAL;
5962
5963         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5964
5965         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5966                 params.supported_rates =
5967                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5968                 params.supported_rates_len =
5969                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5970         }
5971
5972         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5973                 params.capability =
5974                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5975                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5976         }
5977
5978         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5979                 params.ext_capab =
5980                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5981                 params.ext_capab_len =
5982                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5983         }
5984
5985         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5986                 return -EINVAL;
5987
5988         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5989                 params.plink_action =
5990                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5991
5992         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5993                 params.plink_state =
5994                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5995                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5996                         params.peer_aid = nla_get_u16(
5997                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5998                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5999         }
6000
6001         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6002                 params.local_pm = nla_get_u32(
6003                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6004
6005         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6006                 params.opmode_notif_used = true;
6007                 params.opmode_notif =
6008                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6009         }
6010
6011         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6012                 params.he_6ghz_capa =
6013                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6014
6015         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6016                 params.airtime_weight =
6017                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6018
6019         if (params.airtime_weight &&
6020             !wiphy_ext_feature_isset(&rdev->wiphy,
6021                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6022                 return -EOPNOTSUPP;
6023
6024         err = nl80211_parse_sta_txpower_setting(info, &params);
6025         if (err)
6026                 return err;
6027
6028         /* Include parameters for TDLS peer (will check later) */
6029         err = nl80211_set_station_tdls(info, &params);
6030         if (err)
6031                 return err;
6032
6033         params.vlan = get_vlan(info, rdev);
6034         if (IS_ERR(params.vlan))
6035                 return PTR_ERR(params.vlan);
6036
6037         switch (dev->ieee80211_ptr->iftype) {
6038         case NL80211_IFTYPE_AP:
6039         case NL80211_IFTYPE_AP_VLAN:
6040         case NL80211_IFTYPE_P2P_GO:
6041         case NL80211_IFTYPE_P2P_CLIENT:
6042         case NL80211_IFTYPE_STATION:
6043         case NL80211_IFTYPE_ADHOC:
6044         case NL80211_IFTYPE_MESH_POINT:
6045                 break;
6046         default:
6047                 err = -EOPNOTSUPP;
6048                 goto out_put_vlan;
6049         }
6050
6051         /* driver will call cfg80211_check_station_change() */
6052         err = rdev_change_station(rdev, dev, mac_addr, &params);
6053
6054  out_put_vlan:
6055         if (params.vlan)
6056                 dev_put(params.vlan);
6057
6058         return err;
6059 }
6060
6061 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6062 {
6063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6064         int err;
6065         struct net_device *dev = info->user_ptr[1];
6066         struct station_parameters params;
6067         u8 *mac_addr = NULL;
6068         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6069                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6070
6071         memset(&params, 0, sizeof(params));
6072
6073         if (!rdev->ops->add_station)
6074                 return -EOPNOTSUPP;
6075
6076         if (!info->attrs[NL80211_ATTR_MAC])
6077                 return -EINVAL;
6078
6079         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6080                 return -EINVAL;
6081
6082         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6083                 return -EINVAL;
6084
6085         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6086             !info->attrs[NL80211_ATTR_PEER_AID])
6087                 return -EINVAL;
6088
6089         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6090         params.supported_rates =
6091                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6092         params.supported_rates_len =
6093                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6094         params.listen_interval =
6095                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6096
6097         if (info->attrs[NL80211_ATTR_VLAN_ID])
6098                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6099
6100         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6101                 params.support_p2p_ps =
6102                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6103         } else {
6104                 /*
6105                  * if not specified, assume it's supported for P2P GO interface,
6106                  * and is NOT supported for AP interface
6107                  */
6108                 params.support_p2p_ps =
6109                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6110         }
6111
6112         if (info->attrs[NL80211_ATTR_PEER_AID])
6113                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6114         else
6115                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6116
6117         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6118                 params.capability =
6119                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6120                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6121         }
6122
6123         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6124                 params.ext_capab =
6125                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6126                 params.ext_capab_len =
6127                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6128         }
6129
6130         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6131                 params.ht_capa =
6132                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6133
6134         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6135                 params.vht_capa =
6136                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6137
6138         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6139                 params.he_capa =
6140                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6141                 params.he_capa_len =
6142                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6143
6144                 /* max len is validated in nla policy */
6145                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6146                         return -EINVAL;
6147         }
6148
6149         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6150                 params.he_6ghz_capa =
6151                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6152
6153         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6154                 params.opmode_notif_used = true;
6155                 params.opmode_notif =
6156                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6157         }
6158
6159         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6160                 params.plink_action =
6161                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6162
6163         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6164                 params.airtime_weight =
6165                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6166
6167         if (params.airtime_weight &&
6168             !wiphy_ext_feature_isset(&rdev->wiphy,
6169                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6170                 return -EOPNOTSUPP;
6171
6172         err = nl80211_parse_sta_txpower_setting(info, &params);
6173         if (err)
6174                 return err;
6175
6176         err = nl80211_parse_sta_channel_info(info, &params);
6177         if (err)
6178                 return err;
6179
6180         err = nl80211_parse_sta_wme(info, &params);
6181         if (err)
6182                 return err;
6183
6184         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6185                 return -EINVAL;
6186
6187         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6188          * as userspace might just pass through the capabilities from the IEs
6189          * directly, rather than enforcing this restriction and returning an
6190          * error in this case.
6191          */
6192         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6193                 params.ht_capa = NULL;
6194                 params.vht_capa = NULL;
6195
6196                 /* HE requires WME */
6197                 if (params.he_capa_len || params.he_6ghz_capa)
6198                         return -EINVAL;
6199         }
6200
6201         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6202         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6203                 return -EINVAL;
6204
6205         /* When you run into this, adjust the code below for the new flag */
6206         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6207
6208         switch (dev->ieee80211_ptr->iftype) {
6209         case NL80211_IFTYPE_AP:
6210         case NL80211_IFTYPE_AP_VLAN:
6211         case NL80211_IFTYPE_P2P_GO:
6212                 /* ignore WME attributes if iface/sta is not capable */
6213                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6214                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6215                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6216
6217                 /* TDLS peers cannot be added */
6218                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6219                     info->attrs[NL80211_ATTR_PEER_AID])
6220                         return -EINVAL;
6221                 /* but don't bother the driver with it */
6222                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6223
6224                 /* allow authenticated/associated only if driver handles it */
6225                 if (!(rdev->wiphy.features &
6226                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6227                     params.sta_flags_mask & auth_assoc)
6228                         return -EINVAL;
6229
6230                 /* Older userspace, or userspace wanting to be compatible with
6231                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6232                  * and assoc flags in the mask, but assumes the station will be
6233                  * added as associated anyway since this was the required driver
6234                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6235                  * introduced.
6236                  * In order to not bother drivers with this quirk in the API
6237                  * set the flags in both the mask and set for new stations in
6238                  * this case.
6239                  */
6240                 if (!(params.sta_flags_mask & auth_assoc)) {
6241                         params.sta_flags_mask |= auth_assoc;
6242                         params.sta_flags_set |= auth_assoc;
6243                 }
6244
6245                 /* must be last in here for error handling */
6246                 params.vlan = get_vlan(info, rdev);
6247                 if (IS_ERR(params.vlan))
6248                         return PTR_ERR(params.vlan);
6249                 break;
6250         case NL80211_IFTYPE_MESH_POINT:
6251                 /* ignore uAPSD data */
6252                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6253
6254                 /* associated is disallowed */
6255                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6256                         return -EINVAL;
6257                 /* TDLS peers cannot be added */
6258                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6259                     info->attrs[NL80211_ATTR_PEER_AID])
6260                         return -EINVAL;
6261                 break;
6262         case NL80211_IFTYPE_STATION:
6263         case NL80211_IFTYPE_P2P_CLIENT:
6264                 /* ignore uAPSD data */
6265                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6266
6267                 /* these are disallowed */
6268                 if (params.sta_flags_mask &
6269                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6270                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6271                         return -EINVAL;
6272                 /* Only TDLS peers can be added */
6273                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6274                         return -EINVAL;
6275                 /* Can only add if TDLS ... */
6276                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6277                         return -EOPNOTSUPP;
6278                 /* ... with external setup is supported */
6279                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6280                         return -EOPNOTSUPP;
6281                 /*
6282                  * Older wpa_supplicant versions always mark the TDLS peer
6283                  * as authorized, but it shouldn't yet be.
6284                  */
6285                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6286                 break;
6287         default:
6288                 return -EOPNOTSUPP;
6289         }
6290
6291         /* be aware of params.vlan when changing code here */
6292
6293         err = rdev_add_station(rdev, dev, mac_addr, &params);
6294
6295         if (params.vlan)
6296                 dev_put(params.vlan);
6297         return err;
6298 }
6299
6300 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6301 {
6302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6303         struct net_device *dev = info->user_ptr[1];
6304         struct station_del_parameters params;
6305
6306         memset(&params, 0, sizeof(params));
6307
6308         if (info->attrs[NL80211_ATTR_MAC])
6309                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6310
6311         switch (dev->ieee80211_ptr->iftype) {
6312         case NL80211_IFTYPE_AP:
6313         case NL80211_IFTYPE_AP_VLAN:
6314         case NL80211_IFTYPE_MESH_POINT:
6315         case NL80211_IFTYPE_P2P_GO:
6316                 /* always accept these */
6317                 break;
6318         case NL80211_IFTYPE_ADHOC:
6319                 /* conditionally accept */
6320                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6321                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6322                         break;
6323                 return -EINVAL;
6324         default:
6325                 return -EINVAL;
6326         }
6327
6328         if (!rdev->ops->del_station)
6329                 return -EOPNOTSUPP;
6330
6331         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6332                 params.subtype =
6333                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6334                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6335                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6336                         return -EINVAL;
6337         } else {
6338                 /* Default to Deauthentication frame */
6339                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6340         }
6341
6342         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6343                 params.reason_code =
6344                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6345                 if (params.reason_code == 0)
6346                         return -EINVAL; /* 0 is reserved */
6347         } else {
6348                 /* Default to reason code 2 */
6349                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6350         }
6351
6352         return rdev_del_station(rdev, dev, &params);
6353 }
6354
6355 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6356                                 int flags, struct net_device *dev,
6357                                 u8 *dst, u8 *next_hop,
6358                                 struct mpath_info *pinfo)
6359 {
6360         void *hdr;
6361         struct nlattr *pinfoattr;
6362
6363         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6364         if (!hdr)
6365                 return -1;
6366
6367         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6368             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6369             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6370             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6371                 goto nla_put_failure;
6372
6373         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6374         if (!pinfoattr)
6375                 goto nla_put_failure;
6376         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6377             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6378                         pinfo->frame_qlen))
6379                 goto nla_put_failure;
6380         if (((pinfo->filled & MPATH_INFO_SN) &&
6381              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6382             ((pinfo->filled & MPATH_INFO_METRIC) &&
6383              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6384                          pinfo->metric)) ||
6385             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6386              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6387                          pinfo->exptime)) ||
6388             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6389              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6390                         pinfo->flags)) ||
6391             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6392              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6393                          pinfo->discovery_timeout)) ||
6394             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6395              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6396                         pinfo->discovery_retries)) ||
6397             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6398              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6399                         pinfo->hop_count)) ||
6400             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6401              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6402                          pinfo->path_change_count)))
6403                 goto nla_put_failure;
6404
6405         nla_nest_end(msg, pinfoattr);
6406
6407         genlmsg_end(msg, hdr);
6408         return 0;
6409
6410  nla_put_failure:
6411         genlmsg_cancel(msg, hdr);
6412         return -EMSGSIZE;
6413 }
6414
6415 static int nl80211_dump_mpath(struct sk_buff *skb,
6416                               struct netlink_callback *cb)
6417 {
6418         struct mpath_info pinfo;
6419         struct cfg80211_registered_device *rdev;
6420         struct wireless_dev *wdev;
6421         u8 dst[ETH_ALEN];
6422         u8 next_hop[ETH_ALEN];
6423         int path_idx = cb->args[2];
6424         int err;
6425
6426         rtnl_lock();
6427         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6428         if (err)
6429                 goto out_err;
6430
6431         if (!rdev->ops->dump_mpath) {
6432                 err = -EOPNOTSUPP;
6433                 goto out_err;
6434         }
6435
6436         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6437                 err = -EOPNOTSUPP;
6438                 goto out_err;
6439         }
6440
6441         while (1) {
6442                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6443                                       next_hop, &pinfo);
6444                 if (err == -ENOENT)
6445                         break;
6446                 if (err)
6447                         goto out_err;
6448
6449                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6450                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6451                                        wdev->netdev, dst, next_hop,
6452                                        &pinfo) < 0)
6453                         goto out;
6454
6455                 path_idx++;
6456         }
6457
6458  out:
6459         cb->args[2] = path_idx;
6460         err = skb->len;
6461  out_err:
6462         rtnl_unlock();
6463         return err;
6464 }
6465
6466 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6467 {
6468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6469         int err;
6470         struct net_device *dev = info->user_ptr[1];
6471         struct mpath_info pinfo;
6472         struct sk_buff *msg;
6473         u8 *dst = NULL;
6474         u8 next_hop[ETH_ALEN];
6475
6476         memset(&pinfo, 0, sizeof(pinfo));
6477
6478         if (!info->attrs[NL80211_ATTR_MAC])
6479                 return -EINVAL;
6480
6481         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6482
6483         if (!rdev->ops->get_mpath)
6484                 return -EOPNOTSUPP;
6485
6486         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6487                 return -EOPNOTSUPP;
6488
6489         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6490         if (err)
6491                 return err;
6492
6493         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6494         if (!msg)
6495                 return -ENOMEM;
6496
6497         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6498                                  dev, dst, next_hop, &pinfo) < 0) {
6499                 nlmsg_free(msg);
6500                 return -ENOBUFS;
6501         }
6502
6503         return genlmsg_reply(msg, info);
6504 }
6505
6506 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6507 {
6508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6509         struct net_device *dev = info->user_ptr[1];
6510         u8 *dst = NULL;
6511         u8 *next_hop = NULL;
6512
6513         if (!info->attrs[NL80211_ATTR_MAC])
6514                 return -EINVAL;
6515
6516         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6517                 return -EINVAL;
6518
6519         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6520         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6521
6522         if (!rdev->ops->change_mpath)
6523                 return -EOPNOTSUPP;
6524
6525         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6526                 return -EOPNOTSUPP;
6527
6528         return rdev_change_mpath(rdev, dev, dst, next_hop);
6529 }
6530
6531 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6532 {
6533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6534         struct net_device *dev = info->user_ptr[1];
6535         u8 *dst = NULL;
6536         u8 *next_hop = NULL;
6537
6538         if (!info->attrs[NL80211_ATTR_MAC])
6539                 return -EINVAL;
6540
6541         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6542                 return -EINVAL;
6543
6544         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6545         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6546
6547         if (!rdev->ops->add_mpath)
6548                 return -EOPNOTSUPP;
6549
6550         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6551                 return -EOPNOTSUPP;
6552
6553         return rdev_add_mpath(rdev, dev, dst, next_hop);
6554 }
6555
6556 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6557 {
6558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6559         struct net_device *dev = info->user_ptr[1];
6560         u8 *dst = NULL;
6561
6562         if (info->attrs[NL80211_ATTR_MAC])
6563                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6564
6565         if (!rdev->ops->del_mpath)
6566                 return -EOPNOTSUPP;
6567
6568         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6569                 return -EOPNOTSUPP;
6570
6571         return rdev_del_mpath(rdev, dev, dst);
6572 }
6573
6574 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6575 {
6576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6577         int err;
6578         struct net_device *dev = info->user_ptr[1];
6579         struct mpath_info pinfo;
6580         struct sk_buff *msg;
6581         u8 *dst = NULL;
6582         u8 mpp[ETH_ALEN];
6583
6584         memset(&pinfo, 0, sizeof(pinfo));
6585
6586         if (!info->attrs[NL80211_ATTR_MAC])
6587                 return -EINVAL;
6588
6589         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6590
6591         if (!rdev->ops->get_mpp)
6592                 return -EOPNOTSUPP;
6593
6594         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6595                 return -EOPNOTSUPP;
6596
6597         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6598         if (err)
6599                 return err;
6600
6601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6602         if (!msg)
6603                 return -ENOMEM;
6604
6605         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6606                                dev, dst, mpp, &pinfo) < 0) {
6607                 nlmsg_free(msg);
6608                 return -ENOBUFS;
6609         }
6610
6611         return genlmsg_reply(msg, info);
6612 }
6613
6614 static int nl80211_dump_mpp(struct sk_buff *skb,
6615                             struct netlink_callback *cb)
6616 {
6617         struct mpath_info pinfo;
6618         struct cfg80211_registered_device *rdev;
6619         struct wireless_dev *wdev;
6620         u8 dst[ETH_ALEN];
6621         u8 mpp[ETH_ALEN];
6622         int path_idx = cb->args[2];
6623         int err;
6624
6625         rtnl_lock();
6626         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6627         if (err)
6628                 goto out_err;
6629
6630         if (!rdev->ops->dump_mpp) {
6631                 err = -EOPNOTSUPP;
6632                 goto out_err;
6633         }
6634
6635         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6636                 err = -EOPNOTSUPP;
6637                 goto out_err;
6638         }
6639
6640         while (1) {
6641                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6642                                     mpp, &pinfo);
6643                 if (err == -ENOENT)
6644                         break;
6645                 if (err)
6646                         goto out_err;
6647
6648                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6649                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6650                                        wdev->netdev, dst, mpp,
6651                                        &pinfo) < 0)
6652                         goto out;
6653
6654                 path_idx++;
6655         }
6656
6657  out:
6658         cb->args[2] = path_idx;
6659         err = skb->len;
6660  out_err:
6661         rtnl_unlock();
6662         return err;
6663 }
6664
6665 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6666 {
6667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6668         struct net_device *dev = info->user_ptr[1];
6669         struct wireless_dev *wdev = dev->ieee80211_ptr;
6670         struct bss_parameters params;
6671         int err;
6672
6673         memset(&params, 0, sizeof(params));
6674         /* default to not changing parameters */
6675         params.use_cts_prot = -1;
6676         params.use_short_preamble = -1;
6677         params.use_short_slot_time = -1;
6678         params.ap_isolate = -1;
6679         params.ht_opmode = -1;
6680         params.p2p_ctwindow = -1;
6681         params.p2p_opp_ps = -1;
6682
6683         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6684                 params.use_cts_prot =
6685                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6686         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6687                 params.use_short_preamble =
6688                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6689         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6690                 params.use_short_slot_time =
6691                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6692         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6693                 params.basic_rates =
6694                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6695                 params.basic_rates_len =
6696                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6697         }
6698         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6699                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6700         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6701                 params.ht_opmode =
6702                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6703
6704         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6705                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6706                         return -EINVAL;
6707                 params.p2p_ctwindow =
6708                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6709                 if (params.p2p_ctwindow != 0 &&
6710                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6711                         return -EINVAL;
6712         }
6713
6714         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6715                 u8 tmp;
6716
6717                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6718                         return -EINVAL;
6719                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6720                 params.p2p_opp_ps = tmp;
6721                 if (params.p2p_opp_ps &&
6722                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6723                         return -EINVAL;
6724         }
6725
6726         if (!rdev->ops->change_bss)
6727                 return -EOPNOTSUPP;
6728
6729         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6730             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6731                 return -EOPNOTSUPP;
6732
6733         wdev_lock(wdev);
6734         err = rdev_change_bss(rdev, dev, &params);
6735         wdev_unlock(wdev);
6736
6737         return err;
6738 }
6739
6740 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6741 {
6742         char *data = NULL;
6743         bool is_indoor;
6744         enum nl80211_user_reg_hint_type user_reg_hint_type;
6745         u32 owner_nlportid;
6746
6747         /*
6748          * You should only get this when cfg80211 hasn't yet initialized
6749          * completely when built-in to the kernel right between the time
6750          * window between nl80211_init() and regulatory_init(), if that is
6751          * even possible.
6752          */
6753         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6754                 return -EINPROGRESS;
6755
6756         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6757                 user_reg_hint_type =
6758                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6759         else
6760                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6761
6762         switch (user_reg_hint_type) {
6763         case NL80211_USER_REG_HINT_USER:
6764         case NL80211_USER_REG_HINT_CELL_BASE:
6765                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6766                         return -EINVAL;
6767
6768                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6769                 return regulatory_hint_user(data, user_reg_hint_type);
6770         case NL80211_USER_REG_HINT_INDOOR:
6771                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6772                         owner_nlportid = info->snd_portid;
6773                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6774                 } else {
6775                         owner_nlportid = 0;
6776                         is_indoor = true;
6777                 }
6778
6779                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6780         default:
6781                 return -EINVAL;
6782         }
6783 }
6784
6785 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6786 {
6787         return reg_reload_regdb();
6788 }
6789
6790 static int nl80211_get_mesh_config(struct sk_buff *skb,
6791                                    struct genl_info *info)
6792 {
6793         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6794         struct net_device *dev = info->user_ptr[1];
6795         struct wireless_dev *wdev = dev->ieee80211_ptr;
6796         struct mesh_config cur_params;
6797         int err = 0;
6798         void *hdr;
6799         struct nlattr *pinfoattr;
6800         struct sk_buff *msg;
6801
6802         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6803                 return -EOPNOTSUPP;
6804
6805         if (!rdev->ops->get_mesh_config)
6806                 return -EOPNOTSUPP;
6807
6808         wdev_lock(wdev);
6809         /* If not connected, get default parameters */
6810         if (!wdev->mesh_id_len)
6811                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6812         else
6813                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6814         wdev_unlock(wdev);
6815
6816         if (err)
6817                 return err;
6818
6819         /* Draw up a netlink message to send back */
6820         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6821         if (!msg)
6822                 return -ENOMEM;
6823         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6824                              NL80211_CMD_GET_MESH_CONFIG);
6825         if (!hdr)
6826                 goto out;
6827         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6828         if (!pinfoattr)
6829                 goto nla_put_failure;
6830         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6831             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6832                         cur_params.dot11MeshRetryTimeout) ||
6833             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6834                         cur_params.dot11MeshConfirmTimeout) ||
6835             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6836                         cur_params.dot11MeshHoldingTimeout) ||
6837             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6838                         cur_params.dot11MeshMaxPeerLinks) ||
6839             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6840                        cur_params.dot11MeshMaxRetries) ||
6841             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6842                        cur_params.dot11MeshTTL) ||
6843             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6844                        cur_params.element_ttl) ||
6845             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6846                        cur_params.auto_open_plinks) ||
6847             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6848                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6849             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6850                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6851             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6852                         cur_params.path_refresh_time) ||
6853             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6854                         cur_params.min_discovery_timeout) ||
6855             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6856                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6857             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6858                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6859             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6860                         cur_params.dot11MeshHWMPperrMinInterval) ||
6861             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6862                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6863             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6864                        cur_params.dot11MeshHWMPRootMode) ||
6865             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6866                         cur_params.dot11MeshHWMPRannInterval) ||
6867             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6868                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6869             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6870                        cur_params.dot11MeshForwarding) ||
6871             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6872                         cur_params.rssi_threshold) ||
6873             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6874                         cur_params.ht_opmode) ||
6875             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6876                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6877             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6878                         cur_params.dot11MeshHWMProotInterval) ||
6879             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6880                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6881             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6882                         cur_params.power_mode) ||
6883             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6884                         cur_params.dot11MeshAwakeWindowDuration) ||
6885             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6886                         cur_params.plink_timeout) ||
6887             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6888                        cur_params.dot11MeshConnectedToMeshGate))
6889                 goto nla_put_failure;
6890         nla_nest_end(msg, pinfoattr);
6891         genlmsg_end(msg, hdr);
6892         return genlmsg_reply(msg, info);
6893
6894  nla_put_failure:
6895  out:
6896         nlmsg_free(msg);
6897         return -ENOBUFS;
6898 }
6899
6900 static const struct nla_policy
6901 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6902         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6903                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6904         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6905                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6906         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6907                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6908         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6909                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6910         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6911         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6912         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6913         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6914         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6915                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6916         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6917         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6918         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6919         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6920         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6921                 NLA_POLICY_MIN(NLA_U16, 1),
6922         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6923                 NLA_POLICY_MIN(NLA_U16, 1),
6924         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6925                 NLA_POLICY_MIN(NLA_U16, 1),
6926         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6927         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6928                 NLA_POLICY_MIN(NLA_U16, 1),
6929         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6930         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6931         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6932                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6933         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6934         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6935         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6936                 NLA_POLICY_MIN(NLA_U16, 1),
6937         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6938                 NLA_POLICY_MIN(NLA_U16, 1),
6939         [NL80211_MESHCONF_POWER_MODE] =
6940                 NLA_POLICY_RANGE(NLA_U32,
6941                                  NL80211_MESH_POWER_ACTIVE,
6942                                  NL80211_MESH_POWER_MAX),
6943         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6944         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6945         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6946 };
6947
6948 static const struct nla_policy
6949         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6950         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6951         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6952         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6953         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6954         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6955         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6956         [NL80211_MESH_SETUP_IE] =
6957                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6958                                        IEEE80211_MAX_DATA_LEN),
6959         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6960 };
6961
6962 static int nl80211_parse_mesh_config(struct genl_info *info,
6963                                      struct mesh_config *cfg,
6964                                      u32 *mask_out)
6965 {
6966         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6967         u32 mask = 0;
6968         u16 ht_opmode;
6969
6970 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6971 do {                                                                    \
6972         if (tb[attr]) {                                                 \
6973                 cfg->param = fn(tb[attr]);                              \
6974                 mask |= BIT((attr) - 1);                                \
6975         }                                                               \
6976 } while (0)
6977
6978         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6979                 return -EINVAL;
6980         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6981                 return -EINVAL;
6982
6983         /* This makes sure that there aren't more than 32 mesh config
6984          * parameters (otherwise our bitfield scheme would not work.) */
6985         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6986
6987         /* Fill in the params struct */
6988         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6989                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6990         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6991                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6992                                   nla_get_u16);
6993         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6994                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6995                                   nla_get_u16);
6996         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6997                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6998                                   nla_get_u16);
6999         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7000                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7001         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7002                                   NL80211_MESHCONF_TTL, nla_get_u8);
7003         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7004                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7005         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7006                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7007                                   nla_get_u8);
7008         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7009                                   mask,
7010                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7011                                   nla_get_u32);
7012         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7013                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7014                                   nla_get_u8);
7015         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7016                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7017                                   nla_get_u32);
7018         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7019             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7020                 return -EINVAL;
7021         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7022                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7023                                   nla_get_u16);
7024         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7025                                   mask,
7026                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7027                                   nla_get_u32);
7028         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7029             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7030              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7031                 return -EINVAL;
7032         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7033                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7034                                   nla_get_u16);
7035         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7036                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7037                                   nla_get_u16);
7038         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7039                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7040                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7041                                   nla_get_u16);
7042         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7043                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7044         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7045                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7046                                   nla_get_u16);
7047         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7048                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7049                                   nla_get_u8);
7050         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7051                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7052         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7053                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7054                                   nla_get_s32);
7055         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7056                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7057                                   nla_get_u8);
7058         /*
7059          * Check HT operation mode based on
7060          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7061          */
7062         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7063                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7064
7065                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7066                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7067                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7068                         return -EINVAL;
7069
7070                 /* NON_HT_STA bit is reserved, but some programs set it */
7071                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7072
7073                 cfg->ht_opmode = ht_opmode;
7074                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7075         }
7076         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7077                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7078                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7079                                   nla_get_u32);
7080         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7081             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7082              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7083                 return -EINVAL;
7084         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7085                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7086                                   nla_get_u16);
7087         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7088                                   mask,
7089                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7090                                   nla_get_u16);
7091         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7092                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7093         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7094                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7095         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7096                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7097         if (mask_out)
7098                 *mask_out = mask;
7099
7100         return 0;
7101
7102 #undef FILL_IN_MESH_PARAM_IF_SET
7103 }
7104
7105 static int nl80211_parse_mesh_setup(struct genl_info *info,
7106                                      struct mesh_setup *setup)
7107 {
7108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7109         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7110
7111         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7112                 return -EINVAL;
7113         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7114                 return -EINVAL;
7115
7116         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7117                 setup->sync_method =
7118                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7119                  IEEE80211_SYNC_METHOD_VENDOR :
7120                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7121
7122         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7123                 setup->path_sel_proto =
7124                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7125                  IEEE80211_PATH_PROTOCOL_VENDOR :
7126                  IEEE80211_PATH_PROTOCOL_HWMP;
7127
7128         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7129                 setup->path_metric =
7130                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7131                  IEEE80211_PATH_METRIC_VENDOR :
7132                  IEEE80211_PATH_METRIC_AIRTIME;
7133
7134         if (tb[NL80211_MESH_SETUP_IE]) {
7135                 struct nlattr *ieattr =
7136                         tb[NL80211_MESH_SETUP_IE];
7137                 setup->ie = nla_data(ieattr);
7138                 setup->ie_len = nla_len(ieattr);
7139         }
7140         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7141             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7142                 return -EINVAL;
7143         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7144         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7145         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7146         if (setup->is_secure)
7147                 setup->user_mpm = true;
7148
7149         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7150                 if (!setup->user_mpm)
7151                         return -EINVAL;
7152                 setup->auth_id =
7153                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7154         }
7155
7156         return 0;
7157 }
7158
7159 static int nl80211_update_mesh_config(struct sk_buff *skb,
7160                                       struct genl_info *info)
7161 {
7162         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7163         struct net_device *dev = info->user_ptr[1];
7164         struct wireless_dev *wdev = dev->ieee80211_ptr;
7165         struct mesh_config cfg;
7166         u32 mask;
7167         int err;
7168
7169         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7170                 return -EOPNOTSUPP;
7171
7172         if (!rdev->ops->update_mesh_config)
7173                 return -EOPNOTSUPP;
7174
7175         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7176         if (err)
7177                 return err;
7178
7179         wdev_lock(wdev);
7180         if (!wdev->mesh_id_len)
7181                 err = -ENOLINK;
7182
7183         if (!err)
7184                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7185
7186         wdev_unlock(wdev);
7187
7188         return err;
7189 }
7190
7191 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7192                               struct sk_buff *msg)
7193 {
7194         struct nlattr *nl_reg_rules;
7195         unsigned int i;
7196
7197         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7198             (regdom->dfs_region &&
7199              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7200                 goto nla_put_failure;
7201
7202         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7203         if (!nl_reg_rules)
7204                 goto nla_put_failure;
7205
7206         for (i = 0; i < regdom->n_reg_rules; i++) {
7207                 struct nlattr *nl_reg_rule;
7208                 const struct ieee80211_reg_rule *reg_rule;
7209                 const struct ieee80211_freq_range *freq_range;
7210                 const struct ieee80211_power_rule *power_rule;
7211                 unsigned int max_bandwidth_khz;
7212
7213                 reg_rule = &regdom->reg_rules[i];
7214                 freq_range = &reg_rule->freq_range;
7215                 power_rule = &reg_rule->power_rule;
7216
7217                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7218                 if (!nl_reg_rule)
7219                         goto nla_put_failure;
7220
7221                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7222                 if (!max_bandwidth_khz)
7223                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7224                                                                   reg_rule);
7225
7226                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7227                                 reg_rule->flags) ||
7228                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7229                                 freq_range->start_freq_khz) ||
7230                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7231                                 freq_range->end_freq_khz) ||
7232                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7233                                 max_bandwidth_khz) ||
7234                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7235                                 power_rule->max_antenna_gain) ||
7236                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7237                                 power_rule->max_eirp) ||
7238                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7239                                 reg_rule->dfs_cac_ms))
7240                         goto nla_put_failure;
7241
7242                 nla_nest_end(msg, nl_reg_rule);
7243         }
7244
7245         nla_nest_end(msg, nl_reg_rules);
7246         return 0;
7247
7248 nla_put_failure:
7249         return -EMSGSIZE;
7250 }
7251
7252 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7253 {
7254         const struct ieee80211_regdomain *regdom = NULL;
7255         struct cfg80211_registered_device *rdev;
7256         struct wiphy *wiphy = NULL;
7257         struct sk_buff *msg;
7258         void *hdr;
7259
7260         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7261         if (!msg)
7262                 return -ENOBUFS;
7263
7264         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7265                              NL80211_CMD_GET_REG);
7266         if (!hdr)
7267                 goto put_failure;
7268
7269         if (info->attrs[NL80211_ATTR_WIPHY]) {
7270                 bool self_managed;
7271
7272                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7273                 if (IS_ERR(rdev)) {
7274                         nlmsg_free(msg);
7275                         return PTR_ERR(rdev);
7276                 }
7277
7278                 wiphy = &rdev->wiphy;
7279                 self_managed = wiphy->regulatory_flags &
7280                                REGULATORY_WIPHY_SELF_MANAGED;
7281                 regdom = get_wiphy_regdom(wiphy);
7282
7283                 /* a self-managed-reg device must have a private regdom */
7284                 if (WARN_ON(!regdom && self_managed)) {
7285                         nlmsg_free(msg);
7286                         return -EINVAL;
7287                 }
7288
7289                 if (regdom &&
7290                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7291                         goto nla_put_failure;
7292         }
7293
7294         if (!wiphy && reg_last_request_cell_base() &&
7295             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7296                         NL80211_USER_REG_HINT_CELL_BASE))
7297                 goto nla_put_failure;
7298
7299         rcu_read_lock();
7300
7301         if (!regdom)
7302                 regdom = rcu_dereference(cfg80211_regdomain);
7303
7304         if (nl80211_put_regdom(regdom, msg))
7305                 goto nla_put_failure_rcu;
7306
7307         rcu_read_unlock();
7308
7309         genlmsg_end(msg, hdr);
7310         return genlmsg_reply(msg, info);
7311
7312 nla_put_failure_rcu:
7313         rcu_read_unlock();
7314 nla_put_failure:
7315 put_failure:
7316         nlmsg_free(msg);
7317         return -EMSGSIZE;
7318 }
7319
7320 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7321                                u32 seq, int flags, struct wiphy *wiphy,
7322                                const struct ieee80211_regdomain *regdom)
7323 {
7324         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7325                                    NL80211_CMD_GET_REG);
7326
7327         if (!hdr)
7328                 return -1;
7329
7330         genl_dump_check_consistent(cb, hdr);
7331
7332         if (nl80211_put_regdom(regdom, msg))
7333                 goto nla_put_failure;
7334
7335         if (!wiphy && reg_last_request_cell_base() &&
7336             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7337                         NL80211_USER_REG_HINT_CELL_BASE))
7338                 goto nla_put_failure;
7339
7340         if (wiphy &&
7341             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7342                 goto nla_put_failure;
7343
7344         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7345             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7346                 goto nla_put_failure;
7347
7348         genlmsg_end(msg, hdr);
7349         return 0;
7350
7351 nla_put_failure:
7352         genlmsg_cancel(msg, hdr);
7353         return -EMSGSIZE;
7354 }
7355
7356 static int nl80211_get_reg_dump(struct sk_buff *skb,
7357                                 struct netlink_callback *cb)
7358 {
7359         const struct ieee80211_regdomain *regdom = NULL;
7360         struct cfg80211_registered_device *rdev;
7361         int err, reg_idx, start = cb->args[2];
7362
7363         rtnl_lock();
7364
7365         if (cfg80211_regdomain && start == 0) {
7366                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7367                                           NLM_F_MULTI, NULL,
7368                                           rtnl_dereference(cfg80211_regdomain));
7369                 if (err < 0)
7370                         goto out_err;
7371         }
7372
7373         /* the global regdom is idx 0 */
7374         reg_idx = 1;
7375         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7376                 regdom = get_wiphy_regdom(&rdev->wiphy);
7377                 if (!regdom)
7378                         continue;
7379
7380                 if (++reg_idx <= start)
7381                         continue;
7382
7383                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7384                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7385                 if (err < 0) {
7386                         reg_idx--;
7387                         break;
7388                 }
7389         }
7390
7391         cb->args[2] = reg_idx;
7392         err = skb->len;
7393 out_err:
7394         rtnl_unlock();
7395         return err;
7396 }
7397
7398 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7399 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7400         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7401         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7402         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7403         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7404         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7405         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7406         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7407 };
7408
7409 static int parse_reg_rule(struct nlattr *tb[],
7410         struct ieee80211_reg_rule *reg_rule)
7411 {
7412         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7413         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7414
7415         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7416                 return -EINVAL;
7417         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7418                 return -EINVAL;
7419         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7420                 return -EINVAL;
7421         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7422                 return -EINVAL;
7423         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7424                 return -EINVAL;
7425
7426         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7427
7428         freq_range->start_freq_khz =
7429                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7430         freq_range->end_freq_khz =
7431                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7432         freq_range->max_bandwidth_khz =
7433                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7434
7435         power_rule->max_eirp =
7436                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7437
7438         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7439                 power_rule->max_antenna_gain =
7440                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7441
7442         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7443                 reg_rule->dfs_cac_ms =
7444                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7445
7446         return 0;
7447 }
7448
7449 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7450 {
7451         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7452         struct nlattr *nl_reg_rule;
7453         char *alpha2;
7454         int rem_reg_rules, r;
7455         u32 num_rules = 0, rule_idx = 0;
7456         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7457         struct ieee80211_regdomain *rd;
7458
7459         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7460                 return -EINVAL;
7461
7462         if (!info->attrs[NL80211_ATTR_REG_RULES])
7463                 return -EINVAL;
7464
7465         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7466
7467         if (info->attrs[NL80211_ATTR_DFS_REGION])
7468                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7469
7470         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7471                             rem_reg_rules) {
7472                 num_rules++;
7473                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7474                         return -EINVAL;
7475         }
7476
7477         if (!reg_is_valid_request(alpha2))
7478                 return -EINVAL;
7479
7480         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7481         if (!rd)
7482                 return -ENOMEM;
7483
7484         rd->n_reg_rules = num_rules;
7485         rd->alpha2[0] = alpha2[0];
7486         rd->alpha2[1] = alpha2[1];
7487
7488         /*
7489          * Disable DFS master mode if the DFS region was
7490          * not supported or known on this kernel.
7491          */
7492         if (reg_supported_dfs_region(dfs_region))
7493                 rd->dfs_region = dfs_region;
7494
7495         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7496                             rem_reg_rules) {
7497                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7498                                                 nl_reg_rule, reg_rule_policy,
7499                                                 info->extack);
7500                 if (r)
7501                         goto bad_reg;
7502                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7503                 if (r)
7504                         goto bad_reg;
7505
7506                 rule_idx++;
7507
7508                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7509                         r = -EINVAL;
7510                         goto bad_reg;
7511                 }
7512         }
7513
7514         /* set_regdom takes ownership of rd */
7515         return set_regdom(rd, REGD_SOURCE_CRDA);
7516  bad_reg:
7517         kfree(rd);
7518         return r;
7519 }
7520 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7521
7522 static int validate_scan_freqs(struct nlattr *freqs)
7523 {
7524         struct nlattr *attr1, *attr2;
7525         int n_channels = 0, tmp1, tmp2;
7526
7527         nla_for_each_nested(attr1, freqs, tmp1)
7528                 if (nla_len(attr1) != sizeof(u32))
7529                         return 0;
7530
7531         nla_for_each_nested(attr1, freqs, tmp1) {
7532                 n_channels++;
7533                 /*
7534                  * Some hardware has a limited channel list for
7535                  * scanning, and it is pretty much nonsensical
7536                  * to scan for a channel twice, so disallow that
7537                  * and don't require drivers to check that the
7538                  * channel list they get isn't longer than what
7539                  * they can scan, as long as they can scan all
7540                  * the channels they registered at once.
7541                  */
7542                 nla_for_each_nested(attr2, freqs, tmp2)
7543                         if (attr1 != attr2 &&
7544                             nla_get_u32(attr1) == nla_get_u32(attr2))
7545                                 return 0;
7546         }
7547
7548         return n_channels;
7549 }
7550
7551 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7552 {
7553         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7554 }
7555
7556 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7557                             struct cfg80211_bss_selection *bss_select)
7558 {
7559         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7560         struct nlattr *nest;
7561         int err;
7562         bool found = false;
7563         int i;
7564
7565         /* only process one nested attribute */
7566         nest = nla_data(nla);
7567         if (!nla_ok(nest, nla_len(nest)))
7568                 return -EINVAL;
7569
7570         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7571                                           nest, nl80211_bss_select_policy,
7572                                           NULL);
7573         if (err)
7574                 return err;
7575
7576         /* only one attribute may be given */
7577         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7578                 if (attr[i]) {
7579                         if (found)
7580                                 return -EINVAL;
7581                         found = true;
7582                 }
7583         }
7584
7585         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7586
7587         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7588                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7589
7590         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7591                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7592                 bss_select->param.band_pref =
7593                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7594                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7595                         return -EINVAL;
7596         }
7597
7598         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7599                 struct nl80211_bss_select_rssi_adjust *adj_param;
7600
7601                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7602                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7603                 bss_select->param.adjust.band = adj_param->band;
7604                 bss_select->param.adjust.delta = adj_param->delta;
7605                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7606                         return -EINVAL;
7607         }
7608
7609         /* user-space did not provide behaviour attribute */
7610         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7611                 return -EINVAL;
7612
7613         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7614                 return -EINVAL;
7615
7616         return 0;
7617 }
7618
7619 int nl80211_parse_random_mac(struct nlattr **attrs,
7620                              u8 *mac_addr, u8 *mac_addr_mask)
7621 {
7622         int i;
7623
7624         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7625                 eth_zero_addr(mac_addr);
7626                 eth_zero_addr(mac_addr_mask);
7627                 mac_addr[0] = 0x2;
7628                 mac_addr_mask[0] = 0x3;
7629
7630                 return 0;
7631         }
7632
7633         /* need both or none */
7634         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7635                 return -EINVAL;
7636
7637         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7638         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7639
7640         /* don't allow or configure an mcast address */
7641         if (!is_multicast_ether_addr(mac_addr_mask) ||
7642             is_multicast_ether_addr(mac_addr))
7643                 return -EINVAL;
7644
7645         /*
7646          * allow users to pass a MAC address that has bits set outside
7647          * of the mask, but don't bother drivers with having to deal
7648          * with such bits
7649          */
7650         for (i = 0; i < ETH_ALEN; i++)
7651                 mac_addr[i] &= mac_addr_mask[i];
7652
7653         return 0;
7654 }
7655
7656 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7657 {
7658         ASSERT_WDEV_LOCK(wdev);
7659
7660         if (!cfg80211_beaconing_iface_active(wdev))
7661                 return true;
7662
7663         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7664                 return true;
7665
7666         return regulatory_pre_cac_allowed(wdev->wiphy);
7667 }
7668
7669 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7670                                     enum nl80211_ext_feature_index feat)
7671 {
7672         if (!(flags & flag))
7673                 return true;
7674         if (wiphy_ext_feature_isset(wiphy, feat))
7675                 return true;
7676         return false;
7677 }
7678
7679 static int
7680 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7681                          void *request, struct nlattr **attrs,
7682                          bool is_sched_scan)
7683 {
7684         u8 *mac_addr, *mac_addr_mask;
7685         u32 *flags;
7686         enum nl80211_feature_flags randomness_flag;
7687
7688         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7689                 return 0;
7690
7691         if (is_sched_scan) {
7692                 struct cfg80211_sched_scan_request *req = request;
7693
7694                 randomness_flag = wdev ?
7695                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7696                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7697                 flags = &req->flags;
7698                 mac_addr = req->mac_addr;
7699                 mac_addr_mask = req->mac_addr_mask;
7700         } else {
7701                 struct cfg80211_scan_request *req = request;
7702
7703                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7704                 flags = &req->flags;
7705                 mac_addr = req->mac_addr;
7706                 mac_addr_mask = req->mac_addr_mask;
7707         }
7708
7709         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7710
7711         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7712              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7713             !nl80211_check_scan_feat(wiphy, *flags,
7714                                      NL80211_SCAN_FLAG_LOW_SPAN,
7715                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7716             !nl80211_check_scan_feat(wiphy, *flags,
7717                                      NL80211_SCAN_FLAG_LOW_POWER,
7718                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7719             !nl80211_check_scan_feat(wiphy, *flags,
7720                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7721                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7722             !nl80211_check_scan_feat(wiphy, *flags,
7723                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7724                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7725             !nl80211_check_scan_feat(wiphy, *flags,
7726                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7727                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7728             !nl80211_check_scan_feat(wiphy, *flags,
7729                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7730                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7731             !nl80211_check_scan_feat(wiphy, *flags,
7732                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7733                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7734             !nl80211_check_scan_feat(wiphy, *flags,
7735                                      NL80211_SCAN_FLAG_RANDOM_SN,
7736                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7737             !nl80211_check_scan_feat(wiphy, *flags,
7738                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7739                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7740                 return -EOPNOTSUPP;
7741
7742         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7743                 int err;
7744
7745                 if (!(wiphy->features & randomness_flag) ||
7746                     (wdev && wdev->current_bss))
7747                         return -EOPNOTSUPP;
7748
7749                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7750                 if (err)
7751                         return err;
7752         }
7753
7754         return 0;
7755 }
7756
7757 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7758 {
7759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7760         struct wireless_dev *wdev = info->user_ptr[1];
7761         struct cfg80211_scan_request *request;
7762         struct nlattr *scan_freqs = NULL;
7763         bool scan_freqs_khz = false;
7764         struct nlattr *attr;
7765         struct wiphy *wiphy;
7766         int err, tmp, n_ssids = 0, n_channels, i;
7767         size_t ie_len;
7768
7769         wiphy = &rdev->wiphy;
7770
7771         if (wdev->iftype == NL80211_IFTYPE_NAN)
7772                 return -EOPNOTSUPP;
7773
7774         if (!rdev->ops->scan)
7775                 return -EOPNOTSUPP;
7776
7777         if (rdev->scan_req || rdev->scan_msg) {
7778                 err = -EBUSY;
7779                 goto unlock;
7780         }
7781
7782         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
7783                 if (!wiphy_ext_feature_isset(wiphy,
7784                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
7785                         return -EOPNOTSUPP;
7786                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
7787                 scan_freqs_khz = true;
7788         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
7789                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
7790
7791         if (scan_freqs) {
7792                 n_channels = validate_scan_freqs(scan_freqs);
7793                 if (!n_channels) {
7794                         err = -EINVAL;
7795                         goto unlock;
7796                 }
7797         } else {
7798                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7799         }
7800
7801         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7802                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7803                         n_ssids++;
7804
7805         if (n_ssids > wiphy->max_scan_ssids) {
7806                 err = -EINVAL;
7807                 goto unlock;
7808         }
7809
7810         if (info->attrs[NL80211_ATTR_IE])
7811                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7812         else
7813                 ie_len = 0;
7814
7815         if (ie_len > wiphy->max_scan_ie_len) {
7816                 err = -EINVAL;
7817                 goto unlock;
7818         }
7819
7820         request = kzalloc(sizeof(*request)
7821                         + sizeof(*request->ssids) * n_ssids
7822                         + sizeof(*request->channels) * n_channels
7823                         + ie_len, GFP_KERNEL);
7824         if (!request) {
7825                 err = -ENOMEM;
7826                 goto unlock;
7827         }
7828
7829         if (n_ssids)
7830                 request->ssids = (void *)&request->channels[n_channels];
7831         request->n_ssids = n_ssids;
7832         if (ie_len) {
7833                 if (n_ssids)
7834                         request->ie = (void *)(request->ssids + n_ssids);
7835                 else
7836                         request->ie = (void *)(request->channels + n_channels);
7837         }
7838
7839         i = 0;
7840         if (scan_freqs) {
7841                 /* user specified, bail out if channel not found */
7842                 nla_for_each_nested(attr, scan_freqs, tmp) {
7843                         struct ieee80211_channel *chan;
7844                         int freq = nla_get_u32(attr);
7845
7846                         if (!scan_freqs_khz)
7847                                 freq = MHZ_TO_KHZ(freq);
7848
7849                         chan = ieee80211_get_channel_khz(wiphy, freq);
7850                         if (!chan) {
7851                                 err = -EINVAL;
7852                                 goto out_free;
7853                         }
7854
7855                         /* ignore disabled channels */
7856                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7857                                 continue;
7858
7859                         request->channels[i] = chan;
7860                         i++;
7861                 }
7862         } else {
7863                 enum nl80211_band band;
7864
7865                 /* all channels */
7866                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7867                         int j;
7868
7869                         if (!wiphy->bands[band])
7870                                 continue;
7871                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7872                                 struct ieee80211_channel *chan;
7873
7874                                 chan = &wiphy->bands[band]->channels[j];
7875
7876                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7877                                         continue;
7878
7879                                 request->channels[i] = chan;
7880                                 i++;
7881                         }
7882                 }
7883         }
7884
7885         if (!i) {
7886                 err = -EINVAL;
7887                 goto out_free;
7888         }
7889
7890         request->n_channels = i;
7891
7892         wdev_lock(wdev);
7893         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7894                 struct ieee80211_channel *chan;
7895
7896                 if (request->n_channels != 1) {
7897                         wdev_unlock(wdev);
7898                         err = -EBUSY;
7899                         goto out_free;
7900                 }
7901
7902                 chan = request->channels[0];
7903                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7904                         wdev_unlock(wdev);
7905                         err = -EBUSY;
7906                         goto out_free;
7907                 }
7908         }
7909         wdev_unlock(wdev);
7910
7911         i = 0;
7912         if (n_ssids) {
7913                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7914                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7915                                 err = -EINVAL;
7916                                 goto out_free;
7917                         }
7918                         request->ssids[i].ssid_len = nla_len(attr);
7919                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7920                         i++;
7921                 }
7922         }
7923
7924         if (info->attrs[NL80211_ATTR_IE]) {
7925                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7926                 memcpy((void *)request->ie,
7927                        nla_data(info->attrs[NL80211_ATTR_IE]),
7928                        request->ie_len);
7929         }
7930
7931         for (i = 0; i < NUM_NL80211_BANDS; i++)
7932                 if (wiphy->bands[i])
7933                         request->rates[i] =
7934                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7935
7936         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7937                 nla_for_each_nested(attr,
7938                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7939                                     tmp) {
7940                         enum nl80211_band band = nla_type(attr);
7941
7942                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7943                                 err = -EINVAL;
7944                                 goto out_free;
7945                         }
7946
7947                         if (!wiphy->bands[band])
7948                                 continue;
7949
7950                         err = ieee80211_get_ratemask(wiphy->bands[band],
7951                                                      nla_data(attr),
7952                                                      nla_len(attr),
7953                                                      &request->rates[band]);
7954                         if (err)
7955                                 goto out_free;
7956                 }
7957         }
7958
7959         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7960                 if (!wiphy_ext_feature_isset(wiphy,
7961                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7962                         err = -EOPNOTSUPP;
7963                         goto out_free;
7964                 }
7965
7966                 request->duration =
7967                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7968                 request->duration_mandatory =
7969                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7970         }
7971
7972         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7973                                        false);
7974         if (err)
7975                 goto out_free;
7976
7977         request->no_cck =
7978                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7979
7980         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7981          * BSSID to scan for. This was problematic because that same attribute
7982          * was already used for another purpose (local random MAC address). The
7983          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7984          * compatibility with older userspace components, also use the
7985          * NL80211_ATTR_MAC value here if it can be determined to be used for
7986          * the specific BSSID use case instead of the random MAC address
7987          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7988          */
7989         if (info->attrs[NL80211_ATTR_BSSID])
7990                 memcpy(request->bssid,
7991                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7992         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7993                  info->attrs[NL80211_ATTR_MAC])
7994                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7995                        ETH_ALEN);
7996         else
7997                 eth_broadcast_addr(request->bssid);
7998
7999         request->wdev = wdev;
8000         request->wiphy = &rdev->wiphy;
8001         request->scan_start = jiffies;
8002
8003         rdev->scan_req = request;
8004         err = rdev_scan(rdev, request);
8005
8006         if (!err) {
8007                 nl80211_send_scan_start(rdev, wdev);
8008                 if (wdev->netdev)
8009                         dev_hold(wdev->netdev);
8010         } else {
8011  out_free:
8012                 rdev->scan_req = NULL;
8013                 kfree(request);
8014         }
8015
8016  unlock:
8017         return err;
8018 }
8019
8020 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8021 {
8022         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8023         struct wireless_dev *wdev = info->user_ptr[1];
8024
8025         if (!rdev->ops->abort_scan)
8026                 return -EOPNOTSUPP;
8027
8028         if (rdev->scan_msg)
8029                 return 0;
8030
8031         if (!rdev->scan_req)
8032                 return -ENOENT;
8033
8034         rdev_abort_scan(rdev, wdev);
8035         return 0;
8036 }
8037
8038 static int
8039 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8040                                struct cfg80211_sched_scan_request *request,
8041                                struct nlattr **attrs)
8042 {
8043         int tmp, err, i = 0;
8044         struct nlattr *attr;
8045
8046         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8047                 u32 interval;
8048
8049                 /*
8050                  * If scan plans are not specified,
8051                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8052                  * case one scan plan will be set with the specified scan
8053                  * interval and infinite number of iterations.
8054                  */
8055                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8056                 if (!interval)
8057                         return -EINVAL;
8058
8059                 request->scan_plans[0].interval =
8060                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8061                 if (!request->scan_plans[0].interval)
8062                         return -EINVAL;
8063
8064                 if (request->scan_plans[0].interval >
8065                     wiphy->max_sched_scan_plan_interval)
8066                         request->scan_plans[0].interval =
8067                                 wiphy->max_sched_scan_plan_interval;
8068
8069                 return 0;
8070         }
8071
8072         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8073                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8074
8075                 if (WARN_ON(i >= n_plans))
8076                         return -EINVAL;
8077
8078                 err = nla_parse_nested_deprecated(plan,
8079                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8080                                                   attr, nl80211_plan_policy,
8081                                                   NULL);
8082                 if (err)
8083                         return err;
8084
8085                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8086                         return -EINVAL;
8087
8088                 request->scan_plans[i].interval =
8089                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8090                 if (!request->scan_plans[i].interval ||
8091                     request->scan_plans[i].interval >
8092                     wiphy->max_sched_scan_plan_interval)
8093                         return -EINVAL;
8094
8095                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8096                         request->scan_plans[i].iterations =
8097                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8098                         if (!request->scan_plans[i].iterations ||
8099                             (request->scan_plans[i].iterations >
8100                              wiphy->max_sched_scan_plan_iterations))
8101                                 return -EINVAL;
8102                 } else if (i < n_plans - 1) {
8103                         /*
8104                          * All scan plans but the last one must specify
8105                          * a finite number of iterations
8106                          */
8107                         return -EINVAL;
8108                 }
8109
8110                 i++;
8111         }
8112
8113         /*
8114          * The last scan plan must not specify the number of
8115          * iterations, it is supposed to run infinitely
8116          */
8117         if (request->scan_plans[n_plans - 1].iterations)
8118                 return  -EINVAL;
8119
8120         return 0;
8121 }
8122
8123 static int
8124 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8125                                        struct cfg80211_match_set *match_sets,
8126                                        struct nlattr *tb_band_rssi,
8127                                        s32 rssi_thold)
8128 {
8129         struct nlattr *attr;
8130         int i, tmp, ret = 0;
8131
8132         if (!wiphy_ext_feature_isset(wiphy,
8133                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8134                 if (tb_band_rssi)
8135                         ret = -EOPNOTSUPP;
8136                 else
8137                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8138                                 match_sets->per_band_rssi_thold[i] =
8139                                         NL80211_SCAN_RSSI_THOLD_OFF;
8140                 return ret;
8141         }
8142
8143         for (i = 0; i < NUM_NL80211_BANDS; i++)
8144                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8145
8146         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8147                 enum nl80211_band band = nla_type(attr);
8148
8149                 if (band < 0 || band >= NUM_NL80211_BANDS)
8150                         return -EINVAL;
8151
8152                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8153         }
8154
8155         return 0;
8156 }
8157
8158 static struct cfg80211_sched_scan_request *
8159 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8160                          struct nlattr **attrs, int max_match_sets)
8161 {
8162         struct cfg80211_sched_scan_request *request;
8163         struct nlattr *attr;
8164         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8165         enum nl80211_band band;
8166         size_t ie_len;
8167         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8168         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8169
8170         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8171                 n_channels = validate_scan_freqs(
8172                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8173                 if (!n_channels)
8174                         return ERR_PTR(-EINVAL);
8175         } else {
8176                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8177         }
8178
8179         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8180                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8181                                     tmp)
8182                         n_ssids++;
8183
8184         if (n_ssids > wiphy->max_sched_scan_ssids)
8185                 return ERR_PTR(-EINVAL);
8186
8187         /*
8188          * First, count the number of 'real' matchsets. Due to an issue with
8189          * the old implementation, matchsets containing only the RSSI attribute
8190          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8191          * RSSI for all matchsets, rather than their own matchset for reporting
8192          * all APs with a strong RSSI. This is needed to be compatible with
8193          * older userspace that treated a matchset with only the RSSI as the
8194          * global RSSI for all other matchsets - if there are other matchsets.
8195          */
8196         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8197                 nla_for_each_nested(attr,
8198                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8199                                     tmp) {
8200                         struct nlattr *rssi;
8201
8202                         err = nla_parse_nested_deprecated(tb,
8203                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8204                                                           attr,
8205                                                           nl80211_match_policy,
8206                                                           NULL);
8207                         if (err)
8208                                 return ERR_PTR(err);
8209
8210                         /* SSID and BSSID are mutually exclusive */
8211                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8212                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8213                                 return ERR_PTR(-EINVAL);
8214
8215                         /* add other standalone attributes here */
8216                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8217                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8218                                 n_match_sets++;
8219                                 continue;
8220                         }
8221                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8222                         if (rssi)
8223                                 default_match_rssi = nla_get_s32(rssi);
8224                 }
8225         }
8226
8227         /* However, if there's no other matchset, add the RSSI one */
8228         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8229                 n_match_sets = 1;
8230
8231         if (n_match_sets > max_match_sets)
8232                 return ERR_PTR(-EINVAL);
8233
8234         if (attrs[NL80211_ATTR_IE])
8235                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8236         else
8237                 ie_len = 0;
8238
8239         if (ie_len > wiphy->max_sched_scan_ie_len)
8240                 return ERR_PTR(-EINVAL);
8241
8242         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8243                 /*
8244                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8245                  * each scan plan already specifies its own interval
8246                  */
8247                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8248                         return ERR_PTR(-EINVAL);
8249
8250                 nla_for_each_nested(attr,
8251                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8252                         n_plans++;
8253         } else {
8254                 /*
8255                  * The scan interval attribute is kept for backward
8256                  * compatibility. If no scan plans are specified and sched scan
8257                  * interval is specified, one scan plan will be set with this
8258                  * scan interval and infinite number of iterations.
8259                  */
8260                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8261                         return ERR_PTR(-EINVAL);
8262
8263                 n_plans = 1;
8264         }
8265
8266         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8267                 return ERR_PTR(-EINVAL);
8268
8269         if (!wiphy_ext_feature_isset(
8270                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8271             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8272              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8273                 return ERR_PTR(-EINVAL);
8274
8275         request = kzalloc(sizeof(*request)
8276                         + sizeof(*request->ssids) * n_ssids
8277                         + sizeof(*request->match_sets) * n_match_sets
8278                         + sizeof(*request->scan_plans) * n_plans
8279                         + sizeof(*request->channels) * n_channels
8280                         + ie_len, GFP_KERNEL);
8281         if (!request)
8282                 return ERR_PTR(-ENOMEM);
8283
8284         if (n_ssids)
8285                 request->ssids = (void *)&request->channels[n_channels];
8286         request->n_ssids = n_ssids;
8287         if (ie_len) {
8288                 if (n_ssids)
8289                         request->ie = (void *)(request->ssids + n_ssids);
8290                 else
8291                         request->ie = (void *)(request->channels + n_channels);
8292         }
8293
8294         if (n_match_sets) {
8295                 if (request->ie)
8296                         request->match_sets = (void *)(request->ie + ie_len);
8297                 else if (n_ssids)
8298                         request->match_sets =
8299                                 (void *)(request->ssids + n_ssids);
8300                 else
8301                         request->match_sets =
8302                                 (void *)(request->channels + n_channels);
8303         }
8304         request->n_match_sets = n_match_sets;
8305
8306         if (n_match_sets)
8307                 request->scan_plans = (void *)(request->match_sets +
8308                                                n_match_sets);
8309         else if (request->ie)
8310                 request->scan_plans = (void *)(request->ie + ie_len);
8311         else if (n_ssids)
8312                 request->scan_plans = (void *)(request->ssids + n_ssids);
8313         else
8314                 request->scan_plans = (void *)(request->channels + n_channels);
8315
8316         request->n_scan_plans = n_plans;
8317
8318         i = 0;
8319         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8320                 /* user specified, bail out if channel not found */
8321                 nla_for_each_nested(attr,
8322                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8323                                     tmp) {
8324                         struct ieee80211_channel *chan;
8325
8326                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8327
8328                         if (!chan) {
8329                                 err = -EINVAL;
8330                                 goto out_free;
8331                         }
8332
8333                         /* ignore disabled channels */
8334                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8335                                 continue;
8336
8337                         request->channels[i] = chan;
8338                         i++;
8339                 }
8340         } else {
8341                 /* all channels */
8342                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8343                         int j;
8344
8345                         if (!wiphy->bands[band])
8346                                 continue;
8347                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8348                                 struct ieee80211_channel *chan;
8349
8350                                 chan = &wiphy->bands[band]->channels[j];
8351
8352                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8353                                         continue;
8354
8355                                 request->channels[i] = chan;
8356                                 i++;
8357                         }
8358                 }
8359         }
8360
8361         if (!i) {
8362                 err = -EINVAL;
8363                 goto out_free;
8364         }
8365
8366         request->n_channels = i;
8367
8368         i = 0;
8369         if (n_ssids) {
8370                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8371                                     tmp) {
8372                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8373                                 err = -EINVAL;
8374                                 goto out_free;
8375                         }
8376                         request->ssids[i].ssid_len = nla_len(attr);
8377                         memcpy(request->ssids[i].ssid, nla_data(attr),
8378                                nla_len(attr));
8379                         i++;
8380                 }
8381         }
8382
8383         i = 0;
8384         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8385                 nla_for_each_nested(attr,
8386                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8387                                     tmp) {
8388                         struct nlattr *ssid, *bssid, *rssi;
8389
8390                         err = nla_parse_nested_deprecated(tb,
8391                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8392                                                           attr,
8393                                                           nl80211_match_policy,
8394                                                           NULL);
8395                         if (err)
8396                                 goto out_free;
8397                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8398                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8399
8400                         if (!ssid && !bssid) {
8401                                 i++;
8402                                 continue;
8403                         }
8404
8405                         if (WARN_ON(i >= n_match_sets)) {
8406                                 /* this indicates a programming error,
8407                                  * the loop above should have verified
8408                                  * things properly
8409                                  */
8410                                 err = -EINVAL;
8411                                 goto out_free;
8412                         }
8413
8414                         if (ssid) {
8415                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8416                                         err = -EINVAL;
8417                                         goto out_free;
8418                                 }
8419                                 memcpy(request->match_sets[i].ssid.ssid,
8420                                        nla_data(ssid), nla_len(ssid));
8421                                 request->match_sets[i].ssid.ssid_len =
8422                                         nla_len(ssid);
8423                         }
8424                         if (bssid) {
8425                                 if (nla_len(bssid) != ETH_ALEN) {
8426                                         err = -EINVAL;
8427                                         goto out_free;
8428                                 }
8429                                 memcpy(request->match_sets[i].bssid,
8430                                        nla_data(bssid), ETH_ALEN);
8431                         }
8432
8433                         /* special attribute - old implementation w/a */
8434                         request->match_sets[i].rssi_thold = default_match_rssi;
8435                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8436                         if (rssi)
8437                                 request->match_sets[i].rssi_thold =
8438                                         nla_get_s32(rssi);
8439
8440                         /* Parse per band RSSI attribute */
8441                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8442                                 &request->match_sets[i],
8443                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8444                                 request->match_sets[i].rssi_thold);
8445                         if (err)
8446                                 goto out_free;
8447
8448                         i++;
8449                 }
8450
8451                 /* there was no other matchset, so the RSSI one is alone */
8452                 if (i == 0 && n_match_sets)
8453                         request->match_sets[0].rssi_thold = default_match_rssi;
8454
8455                 request->min_rssi_thold = INT_MAX;
8456                 for (i = 0; i < n_match_sets; i++)
8457                         request->min_rssi_thold =
8458                                 min(request->match_sets[i].rssi_thold,
8459                                     request->min_rssi_thold);
8460         } else {
8461                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8462         }
8463
8464         if (ie_len) {
8465                 request->ie_len = ie_len;
8466                 memcpy((void *)request->ie,
8467                        nla_data(attrs[NL80211_ATTR_IE]),
8468                        request->ie_len);
8469         }
8470
8471         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8472         if (err)
8473                 goto out_free;
8474
8475         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8476                 request->delay =
8477                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8478
8479         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8480                 request->relative_rssi = nla_get_s8(
8481                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8482                 request->relative_rssi_set = true;
8483         }
8484
8485         if (request->relative_rssi_set &&
8486             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8487                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8488
8489                 rssi_adjust = nla_data(
8490                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8491                 request->rssi_adjust.band = rssi_adjust->band;
8492                 request->rssi_adjust.delta = rssi_adjust->delta;
8493                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8494                         err = -EINVAL;
8495                         goto out_free;
8496                 }
8497         }
8498
8499         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8500         if (err)
8501                 goto out_free;
8502
8503         request->scan_start = jiffies;
8504
8505         return request;
8506
8507 out_free:
8508         kfree(request);
8509         return ERR_PTR(err);
8510 }
8511
8512 static int nl80211_start_sched_scan(struct sk_buff *skb,
8513                                     struct genl_info *info)
8514 {
8515         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8516         struct net_device *dev = info->user_ptr[1];
8517         struct wireless_dev *wdev = dev->ieee80211_ptr;
8518         struct cfg80211_sched_scan_request *sched_scan_req;
8519         bool want_multi;
8520         int err;
8521
8522         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8523                 return -EOPNOTSUPP;
8524
8525         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8526         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8527         if (err)
8528                 return err;
8529
8530         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8531                                                   info->attrs,
8532                                                   rdev->wiphy.max_match_sets);
8533
8534         err = PTR_ERR_OR_ZERO(sched_scan_req);
8535         if (err)
8536                 goto out_err;
8537
8538         /* leave request id zero for legacy request
8539          * or if driver does not support multi-scheduled scan
8540          */
8541         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8542                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8543
8544         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8545         if (err)
8546                 goto out_free;
8547
8548         sched_scan_req->dev = dev;
8549         sched_scan_req->wiphy = &rdev->wiphy;
8550
8551         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8552                 sched_scan_req->owner_nlportid = info->snd_portid;
8553
8554         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8555
8556         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8557         return 0;
8558
8559 out_free:
8560         kfree(sched_scan_req);
8561 out_err:
8562         return err;
8563 }
8564
8565 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8566                                    struct genl_info *info)
8567 {
8568         struct cfg80211_sched_scan_request *req;
8569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8570         u64 cookie;
8571
8572         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8573                 return -EOPNOTSUPP;
8574
8575         if (info->attrs[NL80211_ATTR_COOKIE]) {
8576                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8577                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8578         }
8579
8580         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8581                                      struct cfg80211_sched_scan_request,
8582                                      list);
8583         if (!req || req->reqid ||
8584             (req->owner_nlportid &&
8585              req->owner_nlportid != info->snd_portid))
8586                 return -ENOENT;
8587
8588         return cfg80211_stop_sched_scan_req(rdev, req, false);
8589 }
8590
8591 static int nl80211_start_radar_detection(struct sk_buff *skb,
8592                                          struct genl_info *info)
8593 {
8594         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8595         struct net_device *dev = info->user_ptr[1];
8596         struct wireless_dev *wdev = dev->ieee80211_ptr;
8597         struct wiphy *wiphy = wdev->wiphy;
8598         struct cfg80211_chan_def chandef;
8599         enum nl80211_dfs_regions dfs_region;
8600         unsigned int cac_time_ms;
8601         int err;
8602
8603         dfs_region = reg_get_dfs_region(wiphy);
8604         if (dfs_region == NL80211_DFS_UNSET)
8605                 return -EINVAL;
8606
8607         err = nl80211_parse_chandef(rdev, info, &chandef);
8608         if (err)
8609                 return err;
8610
8611         if (netif_carrier_ok(dev))
8612                 return -EBUSY;
8613
8614         if (wdev->cac_started)
8615                 return -EBUSY;
8616
8617         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8618         if (err < 0)
8619                 return err;
8620
8621         if (err == 0)
8622                 return -EINVAL;
8623
8624         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8625                 return -EINVAL;
8626
8627         /* CAC start is offloaded to HW and can't be started manually */
8628         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8629                 return -EOPNOTSUPP;
8630
8631         if (!rdev->ops->start_radar_detection)
8632                 return -EOPNOTSUPP;
8633
8634         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8635         if (WARN_ON(!cac_time_ms))
8636                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8637
8638         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8639         if (!err) {
8640                 wdev->chandef = chandef;
8641                 wdev->cac_started = true;
8642                 wdev->cac_start_time = jiffies;
8643                 wdev->cac_time_ms = cac_time_ms;
8644         }
8645         return err;
8646 }
8647
8648 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8649                                           struct genl_info *info)
8650 {
8651         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8652         struct net_device *dev = info->user_ptr[1];
8653         struct wireless_dev *wdev = dev->ieee80211_ptr;
8654         struct wiphy *wiphy = wdev->wiphy;
8655         struct cfg80211_chan_def chandef;
8656         enum nl80211_dfs_regions dfs_region;
8657         int err;
8658
8659         dfs_region = reg_get_dfs_region(wiphy);
8660         if (dfs_region == NL80211_DFS_UNSET) {
8661                 GENL_SET_ERR_MSG(info,
8662                                  "DFS Region is not set. Unexpected Radar indication");
8663                 return -EINVAL;
8664         }
8665
8666         err = nl80211_parse_chandef(rdev, info, &chandef);
8667         if (err) {
8668                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8669                 return err;
8670         }
8671
8672         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8673         if (err < 0) {
8674                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8675                 return err;
8676         }
8677
8678         if (err == 0) {
8679                 GENL_SET_ERR_MSG(info,
8680                                  "Unexpected Radar indication for chandef/iftype");
8681                 return -EINVAL;
8682         }
8683
8684         /* Do not process this notification if radar is already detected
8685          * by kernel on this channel, and return success.
8686          */
8687         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8688                 return 0;
8689
8690         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8691
8692         cfg80211_sched_dfs_chan_update(rdev);
8693
8694         rdev->radar_chandef = chandef;
8695
8696         /* Propagate this notification to other radios as well */
8697         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8698
8699         return 0;
8700 }
8701
8702 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8703 {
8704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8705         struct net_device *dev = info->user_ptr[1];
8706         struct wireless_dev *wdev = dev->ieee80211_ptr;
8707         struct cfg80211_csa_settings params;
8708         /* csa_attrs is defined static to avoid waste of stack size - this
8709          * function is called under RTNL lock, so this should not be a problem.
8710          */
8711         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8712         int err;
8713         bool need_new_beacon = false;
8714         bool need_handle_dfs_flag = true;
8715         int len, i;
8716         u32 cs_count;
8717
8718         if (!rdev->ops->channel_switch ||
8719             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8720                 return -EOPNOTSUPP;
8721
8722         switch (dev->ieee80211_ptr->iftype) {
8723         case NL80211_IFTYPE_AP:
8724         case NL80211_IFTYPE_P2P_GO:
8725                 need_new_beacon = true;
8726                 /* For all modes except AP the handle_dfs flag needs to be
8727                  * supplied to tell the kernel that userspace will handle radar
8728                  * events when they happen. Otherwise a switch to a channel
8729                  * requiring DFS will be rejected.
8730                  */
8731                 need_handle_dfs_flag = false;
8732
8733                 /* useless if AP is not running */
8734                 if (!wdev->beacon_interval)
8735                         return -ENOTCONN;
8736                 break;
8737         case NL80211_IFTYPE_ADHOC:
8738                 if (!wdev->ssid_len)
8739                         return -ENOTCONN;
8740                 break;
8741         case NL80211_IFTYPE_MESH_POINT:
8742                 if (!wdev->mesh_id_len)
8743                         return -ENOTCONN;
8744                 break;
8745         default:
8746                 return -EOPNOTSUPP;
8747         }
8748
8749         memset(&params, 0, sizeof(params));
8750         params.beacon_csa.ftm_responder = -1;
8751
8752         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8753             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8754                 return -EINVAL;
8755
8756         /* only important for AP, IBSS and mesh create IEs internally */
8757         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8758                 return -EINVAL;
8759
8760         /* Even though the attribute is u32, the specification says
8761          * u8, so let's make sure we don't overflow.
8762          */
8763         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8764         if (cs_count > 255)
8765                 return -EINVAL;
8766
8767         params.count = cs_count;
8768
8769         if (!need_new_beacon)
8770                 goto skip_beacons;
8771
8772         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8773         if (err)
8774                 return err;
8775
8776         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8777                                           info->attrs[NL80211_ATTR_CSA_IES],
8778                                           nl80211_policy, info->extack);
8779         if (err)
8780                 return err;
8781
8782         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8783         if (err)
8784                 return err;
8785
8786         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8787                 return -EINVAL;
8788
8789         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8790         if (!len || (len % sizeof(u16)))
8791                 return -EINVAL;
8792
8793         params.n_counter_offsets_beacon = len / sizeof(u16);
8794         if (rdev->wiphy.max_num_csa_counters &&
8795             (params.n_counter_offsets_beacon >
8796              rdev->wiphy.max_num_csa_counters))
8797                 return -EINVAL;
8798
8799         params.counter_offsets_beacon =
8800                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8801
8802         /* sanity checks - counters should fit and be the same */
8803         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8804                 u16 offset = params.counter_offsets_beacon[i];
8805
8806                 if (offset >= params.beacon_csa.tail_len)
8807                         return -EINVAL;
8808
8809                 if (params.beacon_csa.tail[offset] != params.count)
8810                         return -EINVAL;
8811         }
8812
8813         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8814                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8815                 if (!len || (len % sizeof(u16)))
8816                         return -EINVAL;
8817
8818                 params.n_counter_offsets_presp = len / sizeof(u16);
8819                 if (rdev->wiphy.max_num_csa_counters &&
8820                     (params.n_counter_offsets_presp >
8821                      rdev->wiphy.max_num_csa_counters))
8822                         return -EINVAL;
8823
8824                 params.counter_offsets_presp =
8825                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8826
8827                 /* sanity checks - counters should fit and be the same */
8828                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8829                         u16 offset = params.counter_offsets_presp[i];
8830
8831                         if (offset >= params.beacon_csa.probe_resp_len)
8832                                 return -EINVAL;
8833
8834                         if (params.beacon_csa.probe_resp[offset] !=
8835                             params.count)
8836                                 return -EINVAL;
8837                 }
8838         }
8839
8840 skip_beacons:
8841         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8842         if (err)
8843                 return err;
8844
8845         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8846                                            wdev->iftype))
8847                 return -EINVAL;
8848
8849         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8850                                             &params.chandef,
8851                                             wdev->iftype);
8852         if (err < 0)
8853                 return err;
8854
8855         if (err > 0) {
8856                 params.radar_required = true;
8857                 if (need_handle_dfs_flag &&
8858                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8859                         return -EINVAL;
8860                 }
8861         }
8862
8863         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8864                 params.block_tx = true;
8865
8866         wdev_lock(wdev);
8867         err = rdev_channel_switch(rdev, dev, &params);
8868         wdev_unlock(wdev);
8869
8870         return err;
8871 }
8872
8873 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8874                             u32 seq, int flags,
8875                             struct cfg80211_registered_device *rdev,
8876                             struct wireless_dev *wdev,
8877                             struct cfg80211_internal_bss *intbss)
8878 {
8879         struct cfg80211_bss *res = &intbss->pub;
8880         const struct cfg80211_bss_ies *ies;
8881         void *hdr;
8882         struct nlattr *bss;
8883
8884         ASSERT_WDEV_LOCK(wdev);
8885
8886         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8887                              NL80211_CMD_NEW_SCAN_RESULTS);
8888         if (!hdr)
8889                 return -1;
8890
8891         genl_dump_check_consistent(cb, hdr);
8892
8893         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8894                 goto nla_put_failure;
8895         if (wdev->netdev &&
8896             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8897                 goto nla_put_failure;
8898         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8899                               NL80211_ATTR_PAD))
8900                 goto nla_put_failure;
8901
8902         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8903         if (!bss)
8904                 goto nla_put_failure;
8905         if ((!is_zero_ether_addr(res->bssid) &&
8906              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8907                 goto nla_put_failure;
8908
8909         rcu_read_lock();
8910         /* indicate whether we have probe response data or not */
8911         if (rcu_access_pointer(res->proberesp_ies) &&
8912             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8913                 goto fail_unlock_rcu;
8914
8915         /* this pointer prefers to be pointed to probe response data
8916          * but is always valid
8917          */
8918         ies = rcu_dereference(res->ies);
8919         if (ies) {
8920                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8921                                       NL80211_BSS_PAD))
8922                         goto fail_unlock_rcu;
8923                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8924                                         ies->len, ies->data))
8925                         goto fail_unlock_rcu;
8926         }
8927
8928         /* and this pointer is always (unless driver didn't know) beacon data */
8929         ies = rcu_dereference(res->beacon_ies);
8930         if (ies && ies->from_beacon) {
8931                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8932                                       NL80211_BSS_PAD))
8933                         goto fail_unlock_rcu;
8934                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8935                                         ies->len, ies->data))
8936                         goto fail_unlock_rcu;
8937         }
8938         rcu_read_unlock();
8939
8940         if (res->beacon_interval &&
8941             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8942                 goto nla_put_failure;
8943         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8944             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8945             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
8946                         res->channel->freq_offset) ||
8947             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8948             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8949                         jiffies_to_msecs(jiffies - intbss->ts)))
8950                 goto nla_put_failure;
8951
8952         if (intbss->parent_tsf &&
8953             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8954                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8955              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8956                      intbss->parent_bssid)))
8957                 goto nla_put_failure;
8958
8959         if (intbss->ts_boottime &&
8960             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8961                               intbss->ts_boottime, NL80211_BSS_PAD))
8962                 goto nla_put_failure;
8963
8964         if (!nl80211_put_signal(msg, intbss->pub.chains,
8965                                 intbss->pub.chain_signal,
8966                                 NL80211_BSS_CHAIN_SIGNAL))
8967                 goto nla_put_failure;
8968
8969         switch (rdev->wiphy.signal_type) {
8970         case CFG80211_SIGNAL_TYPE_MBM:
8971                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8972                         goto nla_put_failure;
8973                 break;
8974         case CFG80211_SIGNAL_TYPE_UNSPEC:
8975                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8976                         goto nla_put_failure;
8977                 break;
8978         default:
8979                 break;
8980         }
8981
8982         switch (wdev->iftype) {
8983         case NL80211_IFTYPE_P2P_CLIENT:
8984         case NL80211_IFTYPE_STATION:
8985                 if (intbss == wdev->current_bss &&
8986                     nla_put_u32(msg, NL80211_BSS_STATUS,
8987                                 NL80211_BSS_STATUS_ASSOCIATED))
8988                         goto nla_put_failure;
8989                 break;
8990         case NL80211_IFTYPE_ADHOC:
8991                 if (intbss == wdev->current_bss &&
8992                     nla_put_u32(msg, NL80211_BSS_STATUS,
8993                                 NL80211_BSS_STATUS_IBSS_JOINED))
8994                         goto nla_put_failure;
8995                 break;
8996         default:
8997                 break;
8998         }
8999
9000         nla_nest_end(msg, bss);
9001
9002         genlmsg_end(msg, hdr);
9003         return 0;
9004
9005  fail_unlock_rcu:
9006         rcu_read_unlock();
9007  nla_put_failure:
9008         genlmsg_cancel(msg, hdr);
9009         return -EMSGSIZE;
9010 }
9011
9012 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9013 {
9014         struct cfg80211_registered_device *rdev;
9015         struct cfg80211_internal_bss *scan;
9016         struct wireless_dev *wdev;
9017         int start = cb->args[2], idx = 0;
9018         int err;
9019
9020         rtnl_lock();
9021         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9022         if (err) {
9023                 rtnl_unlock();
9024                 return err;
9025         }
9026
9027         wdev_lock(wdev);
9028         spin_lock_bh(&rdev->bss_lock);
9029
9030         /*
9031          * dump_scan will be called multiple times to break up the scan results
9032          * into multiple messages.  It is unlikely that any more bss-es will be
9033          * expired after the first call, so only call only call this on the
9034          * first dump_scan invocation.
9035          */
9036         if (start == 0)
9037                 cfg80211_bss_expire(rdev);
9038
9039         cb->seq = rdev->bss_generation;
9040
9041         list_for_each_entry(scan, &rdev->bss_list, list) {
9042                 if (++idx <= start)
9043                         continue;
9044                 if (nl80211_send_bss(skb, cb,
9045                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9046                                 rdev, wdev, scan) < 0) {
9047                         idx--;
9048                         break;
9049                 }
9050         }
9051
9052         spin_unlock_bh(&rdev->bss_lock);
9053         wdev_unlock(wdev);
9054
9055         cb->args[2] = idx;
9056         rtnl_unlock();
9057
9058         return skb->len;
9059 }
9060
9061 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9062                                int flags, struct net_device *dev,
9063                                bool allow_radio_stats,
9064                                struct survey_info *survey)
9065 {
9066         void *hdr;
9067         struct nlattr *infoattr;
9068
9069         /* skip radio stats if userspace didn't request them */
9070         if (!survey->channel && !allow_radio_stats)
9071                 return 0;
9072
9073         hdr = nl80211hdr_put(msg, portid, seq, flags,
9074                              NL80211_CMD_NEW_SURVEY_RESULTS);
9075         if (!hdr)
9076                 return -ENOMEM;
9077
9078         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9079                 goto nla_put_failure;
9080
9081         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9082         if (!infoattr)
9083                 goto nla_put_failure;
9084
9085         if (survey->channel &&
9086             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9087                         survey->channel->center_freq))
9088                 goto nla_put_failure;
9089
9090         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9091             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9092                 goto nla_put_failure;
9093         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9094             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9095                 goto nla_put_failure;
9096         if ((survey->filled & SURVEY_INFO_TIME) &&
9097             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9098                         survey->time, NL80211_SURVEY_INFO_PAD))
9099                 goto nla_put_failure;
9100         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9101             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9102                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9103                 goto nla_put_failure;
9104         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9105             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9106                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9107                 goto nla_put_failure;
9108         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9109             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9110                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9111                 goto nla_put_failure;
9112         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9113             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9114                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9115                 goto nla_put_failure;
9116         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9117             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9118                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9119                 goto nla_put_failure;
9120         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9121             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9122                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9123                 goto nla_put_failure;
9124
9125         nla_nest_end(msg, infoattr);
9126
9127         genlmsg_end(msg, hdr);
9128         return 0;
9129
9130  nla_put_failure:
9131         genlmsg_cancel(msg, hdr);
9132         return -EMSGSIZE;
9133 }
9134
9135 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9136 {
9137         struct nlattr **attrbuf;
9138         struct survey_info survey;
9139         struct cfg80211_registered_device *rdev;
9140         struct wireless_dev *wdev;
9141         int survey_idx = cb->args[2];
9142         int res;
9143         bool radio_stats;
9144
9145         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9146         if (!attrbuf)
9147                 return -ENOMEM;
9148
9149         rtnl_lock();
9150         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9151         if (res)
9152                 goto out_err;
9153
9154         /* prepare_wdev_dump parsed the attributes */
9155         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9156
9157         if (!wdev->netdev) {
9158                 res = -EINVAL;
9159                 goto out_err;
9160         }
9161
9162         if (!rdev->ops->dump_survey) {
9163                 res = -EOPNOTSUPP;
9164                 goto out_err;
9165         }
9166
9167         while (1) {
9168                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9169                 if (res == -ENOENT)
9170                         break;
9171                 if (res)
9172                         goto out_err;
9173
9174                 /* don't send disabled channels, but do send non-channel data */
9175                 if (survey.channel &&
9176                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9177                         survey_idx++;
9178                         continue;
9179                 }
9180
9181                 if (nl80211_send_survey(skb,
9182                                 NETLINK_CB(cb->skb).portid,
9183                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9184                                 wdev->netdev, radio_stats, &survey) < 0)
9185                         goto out;
9186                 survey_idx++;
9187         }
9188
9189  out:
9190         cb->args[2] = survey_idx;
9191         res = skb->len;
9192  out_err:
9193         kfree(attrbuf);
9194         rtnl_unlock();
9195         return res;
9196 }
9197
9198 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9199 {
9200         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9201                                   NL80211_WPA_VERSION_2 |
9202                                   NL80211_WPA_VERSION_3));
9203 }
9204
9205 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9206 {
9207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9208         struct net_device *dev = info->user_ptr[1];
9209         struct ieee80211_channel *chan;
9210         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9211         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9212         enum nl80211_auth_type auth_type;
9213         struct key_parse key;
9214         bool local_state_change;
9215         u32 freq;
9216
9217         if (!info->attrs[NL80211_ATTR_MAC])
9218                 return -EINVAL;
9219
9220         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9221                 return -EINVAL;
9222
9223         if (!info->attrs[NL80211_ATTR_SSID])
9224                 return -EINVAL;
9225
9226         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9227                 return -EINVAL;
9228
9229         err = nl80211_parse_key(info, &key);
9230         if (err)
9231                 return err;
9232
9233         if (key.idx >= 0) {
9234                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9235                         return -EINVAL;
9236                 if (!key.p.key || !key.p.key_len)
9237                         return -EINVAL;
9238                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9239                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9240                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9241                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9242                         return -EINVAL;
9243                 if (key.idx > 3)
9244                         return -EINVAL;
9245         } else {
9246                 key.p.key_len = 0;
9247                 key.p.key = NULL;
9248         }
9249
9250         if (key.idx >= 0) {
9251                 int i;
9252                 bool ok = false;
9253
9254                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9255                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9256                                 ok = true;
9257                                 break;
9258                         }
9259                 }
9260                 if (!ok)
9261                         return -EINVAL;
9262         }
9263
9264         if (!rdev->ops->auth)
9265                 return -EOPNOTSUPP;
9266
9267         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9268             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9269                 return -EOPNOTSUPP;
9270
9271         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9272         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9273         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9274                 freq +=
9275                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9276
9277         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9278         if (!chan)
9279                 return -EINVAL;
9280
9281         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9282         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9283
9284         if (info->attrs[NL80211_ATTR_IE]) {
9285                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9286                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9287         }
9288
9289         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9290         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9291                 return -EINVAL;
9292
9293         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9294              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9295              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9296              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9297             !info->attrs[NL80211_ATTR_AUTH_DATA])
9298                 return -EINVAL;
9299
9300         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9301                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9302                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9303                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9304                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9305                         return -EINVAL;
9306                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9307                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9308                 /* need to include at least Auth Transaction and Status Code */
9309                 if (auth_data_len < 4)
9310                         return -EINVAL;
9311         }
9312
9313         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9314
9315         /*
9316          * Since we no longer track auth state, ignore
9317          * requests to only change local state.
9318          */
9319         if (local_state_change)
9320                 return 0;
9321
9322         wdev_lock(dev->ieee80211_ptr);
9323         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9324                                  ssid, ssid_len, ie, ie_len,
9325                                  key.p.key, key.p.key_len, key.idx,
9326                                  auth_data, auth_data_len);
9327         wdev_unlock(dev->ieee80211_ptr);
9328         return err;
9329 }
9330
9331 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9332                                      struct genl_info *info)
9333 {
9334         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9335                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9336                 return -EINVAL;
9337         }
9338
9339         if (!rdev->ops->tx_control_port ||
9340             !wiphy_ext_feature_isset(&rdev->wiphy,
9341                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9342                 return -EOPNOTSUPP;
9343
9344         return 0;
9345 }
9346
9347 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9348                                    struct genl_info *info,
9349                                    struct cfg80211_crypto_settings *settings,
9350                                    int cipher_limit)
9351 {
9352         memset(settings, 0, sizeof(*settings));
9353
9354         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9355
9356         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9357                 u16 proto;
9358
9359                 proto = nla_get_u16(
9360                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9361                 settings->control_port_ethertype = cpu_to_be16(proto);
9362                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9363                     proto != ETH_P_PAE)
9364                         return -EINVAL;
9365                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9366                         settings->control_port_no_encrypt = true;
9367         } else
9368                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9369
9370         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9371                 int r = validate_pae_over_nl80211(rdev, info);
9372
9373                 if (r < 0)
9374                         return r;
9375
9376                 settings->control_port_over_nl80211 = true;
9377
9378                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9379                         settings->control_port_no_preauth = true;
9380         }
9381
9382         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9383                 void *data;
9384                 int len, i;
9385
9386                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9387                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9388                 settings->n_ciphers_pairwise = len / sizeof(u32);
9389
9390                 if (len % sizeof(u32))
9391                         return -EINVAL;
9392
9393                 if (settings->n_ciphers_pairwise > cipher_limit)
9394                         return -EINVAL;
9395
9396                 memcpy(settings->ciphers_pairwise, data, len);
9397
9398                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9399                         if (!cfg80211_supported_cipher_suite(
9400                                         &rdev->wiphy,
9401                                         settings->ciphers_pairwise[i]))
9402                                 return -EINVAL;
9403         }
9404
9405         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9406                 settings->cipher_group =
9407                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9408                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9409                                                      settings->cipher_group))
9410                         return -EINVAL;
9411         }
9412
9413         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9414                 settings->wpa_versions =
9415                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9416                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9417                         return -EINVAL;
9418         }
9419
9420         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9421                 void *data;
9422                 int len;
9423
9424                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9425                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9426                 settings->n_akm_suites = len / sizeof(u32);
9427
9428                 if (len % sizeof(u32))
9429                         return -EINVAL;
9430
9431                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9432                         return -EINVAL;
9433
9434                 memcpy(settings->akm_suites, data, len);
9435         }
9436
9437         if (info->attrs[NL80211_ATTR_PMK]) {
9438                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9439                         return -EINVAL;
9440                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9441                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9442                         return -EINVAL;
9443                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9444         }
9445
9446         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9447                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9448                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9449                         return -EINVAL;
9450                 settings->sae_pwd =
9451                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9452                 settings->sae_pwd_len =
9453                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9454         }
9455
9456         return 0;
9457 }
9458
9459 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9460 {
9461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9462         struct net_device *dev = info->user_ptr[1];
9463         struct ieee80211_channel *chan;
9464         struct cfg80211_assoc_request req = {};
9465         const u8 *bssid, *ssid;
9466         int err, ssid_len = 0;
9467         u32 freq;
9468
9469         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9470             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9471                 return -EPERM;
9472
9473         if (!info->attrs[NL80211_ATTR_MAC] ||
9474             !info->attrs[NL80211_ATTR_SSID] ||
9475             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9476                 return -EINVAL;
9477
9478         if (!rdev->ops->assoc)
9479                 return -EOPNOTSUPP;
9480
9481         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9482             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9483                 return -EOPNOTSUPP;
9484
9485         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9486
9487         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9488         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9489                 freq +=
9490                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9491         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9492         if (!chan)
9493                 return -EINVAL;
9494
9495         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9496         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9497
9498         if (info->attrs[NL80211_ATTR_IE]) {
9499                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9500                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9501         }
9502
9503         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9504                 enum nl80211_mfp mfp =
9505                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9506                 if (mfp == NL80211_MFP_REQUIRED)
9507                         req.use_mfp = true;
9508                 else if (mfp != NL80211_MFP_NO)
9509                         return -EINVAL;
9510         }
9511
9512         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9513                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9514
9515         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9516                 req.flags |= ASSOC_REQ_DISABLE_HT;
9517
9518         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9519                 memcpy(&req.ht_capa_mask,
9520                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9521                        sizeof(req.ht_capa_mask));
9522
9523         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9524                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9525                         return -EINVAL;
9526                 memcpy(&req.ht_capa,
9527                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9528                        sizeof(req.ht_capa));
9529         }
9530
9531         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9532                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9533
9534         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9535                 memcpy(&req.vht_capa_mask,
9536                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9537                        sizeof(req.vht_capa_mask));
9538
9539         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9540                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9541                         return -EINVAL;
9542                 memcpy(&req.vht_capa,
9543                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9544                        sizeof(req.vht_capa));
9545         }
9546
9547         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9548                 if (!((rdev->wiphy.features &
9549                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9550                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9551                     !wiphy_ext_feature_isset(&rdev->wiphy,
9552                                              NL80211_EXT_FEATURE_RRM))
9553                         return -EINVAL;
9554                 req.flags |= ASSOC_REQ_USE_RRM;
9555         }
9556
9557         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9558                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9559                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9560                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9561                         return -EINVAL;
9562                 req.fils_nonces =
9563                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9564         }
9565
9566         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9567         if (!err) {
9568                 wdev_lock(dev->ieee80211_ptr);
9569
9570                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9571                                           ssid, ssid_len, &req);
9572
9573                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9574                         dev->ieee80211_ptr->conn_owner_nlportid =
9575                                 info->snd_portid;
9576                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9577                                bssid, ETH_ALEN);
9578                 }
9579
9580                 wdev_unlock(dev->ieee80211_ptr);
9581         }
9582
9583         return err;
9584 }
9585
9586 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9587 {
9588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9589         struct net_device *dev = info->user_ptr[1];
9590         const u8 *ie = NULL, *bssid;
9591         int ie_len = 0, err;
9592         u16 reason_code;
9593         bool local_state_change;
9594
9595         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9596             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9597                 return -EPERM;
9598
9599         if (!info->attrs[NL80211_ATTR_MAC])
9600                 return -EINVAL;
9601
9602         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9603                 return -EINVAL;
9604
9605         if (!rdev->ops->deauth)
9606                 return -EOPNOTSUPP;
9607
9608         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9609             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9610                 return -EOPNOTSUPP;
9611
9612         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9613
9614         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9615         if (reason_code == 0) {
9616                 /* Reason Code 0 is reserved */
9617                 return -EINVAL;
9618         }
9619
9620         if (info->attrs[NL80211_ATTR_IE]) {
9621                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9622                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9623         }
9624
9625         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9626
9627         wdev_lock(dev->ieee80211_ptr);
9628         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9629                                    local_state_change);
9630         wdev_unlock(dev->ieee80211_ptr);
9631         return err;
9632 }
9633
9634 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9635 {
9636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9637         struct net_device *dev = info->user_ptr[1];
9638         const u8 *ie = NULL, *bssid;
9639         int ie_len = 0, err;
9640         u16 reason_code;
9641         bool local_state_change;
9642
9643         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9644             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9645                 return -EPERM;
9646
9647         if (!info->attrs[NL80211_ATTR_MAC])
9648                 return -EINVAL;
9649
9650         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9651                 return -EINVAL;
9652
9653         if (!rdev->ops->disassoc)
9654                 return -EOPNOTSUPP;
9655
9656         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9657             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9658                 return -EOPNOTSUPP;
9659
9660         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9661
9662         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9663         if (reason_code == 0) {
9664                 /* Reason Code 0 is reserved */
9665                 return -EINVAL;
9666         }
9667
9668         if (info->attrs[NL80211_ATTR_IE]) {
9669                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9670                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9671         }
9672
9673         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9674
9675         wdev_lock(dev->ieee80211_ptr);
9676         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9677                                      local_state_change);
9678         wdev_unlock(dev->ieee80211_ptr);
9679         return err;
9680 }
9681
9682 static bool
9683 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9684                          int mcast_rate[NUM_NL80211_BANDS],
9685                          int rateval)
9686 {
9687         struct wiphy *wiphy = &rdev->wiphy;
9688         bool found = false;
9689         int band, i;
9690
9691         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9692                 struct ieee80211_supported_band *sband;
9693
9694                 sband = wiphy->bands[band];
9695                 if (!sband)
9696                         continue;
9697
9698                 for (i = 0; i < sband->n_bitrates; i++) {
9699                         if (sband->bitrates[i].bitrate == rateval) {
9700                                 mcast_rate[band] = i + 1;
9701                                 found = true;
9702                                 break;
9703                         }
9704                 }
9705         }
9706
9707         return found;
9708 }
9709
9710 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9711 {
9712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9713         struct net_device *dev = info->user_ptr[1];
9714         struct cfg80211_ibss_params ibss;
9715         struct wiphy *wiphy;
9716         struct cfg80211_cached_keys *connkeys = NULL;
9717         int err;
9718
9719         memset(&ibss, 0, sizeof(ibss));
9720
9721         if (!info->attrs[NL80211_ATTR_SSID] ||
9722             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9723                 return -EINVAL;
9724
9725         ibss.beacon_interval = 100;
9726
9727         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9728                 ibss.beacon_interval =
9729                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9730
9731         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9732                                            ibss.beacon_interval);
9733         if (err)
9734                 return err;
9735
9736         if (!rdev->ops->join_ibss)
9737                 return -EOPNOTSUPP;
9738
9739         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9740                 return -EOPNOTSUPP;
9741
9742         wiphy = &rdev->wiphy;
9743
9744         if (info->attrs[NL80211_ATTR_MAC]) {
9745                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9746
9747                 if (!is_valid_ether_addr(ibss.bssid))
9748                         return -EINVAL;
9749         }
9750         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9751         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9752
9753         if (info->attrs[NL80211_ATTR_IE]) {
9754                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9755                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9756         }
9757
9758         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9759         if (err)
9760                 return err;
9761
9762         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9763                                      NL80211_IFTYPE_ADHOC))
9764                 return -EINVAL;
9765
9766         switch (ibss.chandef.width) {
9767         case NL80211_CHAN_WIDTH_5:
9768         case NL80211_CHAN_WIDTH_10:
9769         case NL80211_CHAN_WIDTH_20_NOHT:
9770                 break;
9771         case NL80211_CHAN_WIDTH_20:
9772         case NL80211_CHAN_WIDTH_40:
9773                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9774                         return -EINVAL;
9775                 break;
9776         case NL80211_CHAN_WIDTH_80:
9777         case NL80211_CHAN_WIDTH_80P80:
9778         case NL80211_CHAN_WIDTH_160:
9779                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9780                         return -EINVAL;
9781                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9782                                              NL80211_EXT_FEATURE_VHT_IBSS))
9783                         return -EINVAL;
9784                 break;
9785         default:
9786                 return -EINVAL;
9787         }
9788
9789         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9790         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9791
9792         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9793                 u8 *rates =
9794                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9795                 int n_rates =
9796                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9797                 struct ieee80211_supported_band *sband =
9798                         wiphy->bands[ibss.chandef.chan->band];
9799
9800                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9801                                              &ibss.basic_rates);
9802                 if (err)
9803                         return err;
9804         }
9805
9806         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9807                 memcpy(&ibss.ht_capa_mask,
9808                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9809                        sizeof(ibss.ht_capa_mask));
9810
9811         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9812                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9813                         return -EINVAL;
9814                 memcpy(&ibss.ht_capa,
9815                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9816                        sizeof(ibss.ht_capa));
9817         }
9818
9819         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9820             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9821                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9822                 return -EINVAL;
9823
9824         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9825                 bool no_ht = false;
9826
9827                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9828                 if (IS_ERR(connkeys))
9829                         return PTR_ERR(connkeys);
9830
9831                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9832                     no_ht) {
9833                         kzfree(connkeys);
9834                         return -EINVAL;
9835                 }
9836         }
9837
9838         ibss.control_port =
9839                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9840
9841         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9842                 int r = validate_pae_over_nl80211(rdev, info);
9843
9844                 if (r < 0) {
9845                         kzfree(connkeys);
9846                         return r;
9847                 }
9848
9849                 ibss.control_port_over_nl80211 = true;
9850         }
9851
9852         ibss.userspace_handles_dfs =
9853                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9854
9855         wdev_lock(dev->ieee80211_ptr);
9856         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9857         if (err)
9858                 kzfree(connkeys);
9859         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9860                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9861         wdev_unlock(dev->ieee80211_ptr);
9862
9863         return err;
9864 }
9865
9866 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9867 {
9868         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9869         struct net_device *dev = info->user_ptr[1];
9870
9871         if (!rdev->ops->leave_ibss)
9872                 return -EOPNOTSUPP;
9873
9874         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9875                 return -EOPNOTSUPP;
9876
9877         return cfg80211_leave_ibss(rdev, dev, false);
9878 }
9879
9880 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9881 {
9882         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9883         struct net_device *dev = info->user_ptr[1];
9884         int mcast_rate[NUM_NL80211_BANDS];
9885         u32 nla_rate;
9886         int err;
9887
9888         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9889             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9890             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9891                 return -EOPNOTSUPP;
9892
9893         if (!rdev->ops->set_mcast_rate)
9894                 return -EOPNOTSUPP;
9895
9896         memset(mcast_rate, 0, sizeof(mcast_rate));
9897
9898         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9899                 return -EINVAL;
9900
9901         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9902         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9903                 return -EINVAL;
9904
9905         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9906
9907         return err;
9908 }
9909
9910 static struct sk_buff *
9911 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9912                             struct wireless_dev *wdev, int approxlen,
9913                             u32 portid, u32 seq, enum nl80211_commands cmd,
9914                             enum nl80211_attrs attr,
9915                             const struct nl80211_vendor_cmd_info *info,
9916                             gfp_t gfp)
9917 {
9918         struct sk_buff *skb;
9919         void *hdr;
9920         struct nlattr *data;
9921
9922         skb = nlmsg_new(approxlen + 100, gfp);
9923         if (!skb)
9924                 return NULL;
9925
9926         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9927         if (!hdr) {
9928                 kfree_skb(skb);
9929                 return NULL;
9930         }
9931
9932         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9933                 goto nla_put_failure;
9934
9935         if (info) {
9936                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9937                                 info->vendor_id))
9938                         goto nla_put_failure;
9939                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9940                                 info->subcmd))
9941                         goto nla_put_failure;
9942         }
9943
9944         if (wdev) {
9945                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9946                                       wdev_id(wdev), NL80211_ATTR_PAD))
9947                         goto nla_put_failure;
9948                 if (wdev->netdev &&
9949                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9950                                 wdev->netdev->ifindex))
9951                         goto nla_put_failure;
9952         }
9953
9954         data = nla_nest_start_noflag(skb, attr);
9955         if (!data)
9956                 goto nla_put_failure;
9957
9958         ((void **)skb->cb)[0] = rdev;
9959         ((void **)skb->cb)[1] = hdr;
9960         ((void **)skb->cb)[2] = data;
9961
9962         return skb;
9963
9964  nla_put_failure:
9965         kfree_skb(skb);
9966         return NULL;
9967 }
9968
9969 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9970                                            struct wireless_dev *wdev,
9971                                            enum nl80211_commands cmd,
9972                                            enum nl80211_attrs attr,
9973                                            unsigned int portid,
9974                                            int vendor_event_idx,
9975                                            int approxlen, gfp_t gfp)
9976 {
9977         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9978         const struct nl80211_vendor_cmd_info *info;
9979
9980         switch (cmd) {
9981         case NL80211_CMD_TESTMODE:
9982                 if (WARN_ON(vendor_event_idx != -1))
9983                         return NULL;
9984                 info = NULL;
9985                 break;
9986         case NL80211_CMD_VENDOR:
9987                 if (WARN_ON(vendor_event_idx < 0 ||
9988                             vendor_event_idx >= wiphy->n_vendor_events))
9989                         return NULL;
9990                 info = &wiphy->vendor_events[vendor_event_idx];
9991                 break;
9992         default:
9993                 WARN_ON(1);
9994                 return NULL;
9995         }
9996
9997         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9998                                            cmd, attr, info, gfp);
9999 }
10000 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10001
10002 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10003 {
10004         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10005         void *hdr = ((void **)skb->cb)[1];
10006         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10007         struct nlattr *data = ((void **)skb->cb)[2];
10008         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10009
10010         /* clear CB data for netlink core to own from now on */
10011         memset(skb->cb, 0, sizeof(skb->cb));
10012
10013         nla_nest_end(skb, data);
10014         genlmsg_end(skb, hdr);
10015
10016         if (nlhdr->nlmsg_pid) {
10017                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10018                                 nlhdr->nlmsg_pid);
10019         } else {
10020                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10021                         mcgrp = NL80211_MCGRP_VENDOR;
10022
10023                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10024                                         skb, 0, mcgrp, gfp);
10025         }
10026 }
10027 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10028
10029 #ifdef CONFIG_NL80211_TESTMODE
10030 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10031 {
10032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10033         struct wireless_dev *wdev =
10034                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10035         int err;
10036
10037         if (!rdev->ops->testmode_cmd)
10038                 return -EOPNOTSUPP;
10039
10040         if (IS_ERR(wdev)) {
10041                 err = PTR_ERR(wdev);
10042                 if (err != -EINVAL)
10043                         return err;
10044                 wdev = NULL;
10045         } else if (wdev->wiphy != &rdev->wiphy) {
10046                 return -EINVAL;
10047         }
10048
10049         if (!info->attrs[NL80211_ATTR_TESTDATA])
10050                 return -EINVAL;
10051
10052         rdev->cur_cmd_info = info;
10053         err = rdev_testmode_cmd(rdev, wdev,
10054                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10055                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10056         rdev->cur_cmd_info = NULL;
10057
10058         return err;
10059 }
10060
10061 static int nl80211_testmode_dump(struct sk_buff *skb,
10062                                  struct netlink_callback *cb)
10063 {
10064         struct cfg80211_registered_device *rdev;
10065         struct nlattr **attrbuf = NULL;
10066         int err;
10067         long phy_idx;
10068         void *data = NULL;
10069         int data_len = 0;
10070
10071         rtnl_lock();
10072
10073         if (cb->args[0]) {
10074                 /*
10075                  * 0 is a valid index, but not valid for args[0],
10076                  * so we need to offset by 1.
10077                  */
10078                 phy_idx = cb->args[0] - 1;
10079
10080                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10081                 if (!rdev) {
10082                         err = -ENOENT;
10083                         goto out_err;
10084                 }
10085         } else {
10086                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10087                                   GFP_KERNEL);
10088                 if (!attrbuf) {
10089                         err = -ENOMEM;
10090                         goto out_err;
10091                 }
10092
10093                 err = nlmsg_parse_deprecated(cb->nlh,
10094                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10095                                              attrbuf, nl80211_fam.maxattr,
10096                                              nl80211_policy, NULL);
10097                 if (err)
10098                         goto out_err;
10099
10100                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10101                 if (IS_ERR(rdev)) {
10102                         err = PTR_ERR(rdev);
10103                         goto out_err;
10104                 }
10105                 phy_idx = rdev->wiphy_idx;
10106
10107                 if (attrbuf[NL80211_ATTR_TESTDATA])
10108                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10109         }
10110
10111         if (cb->args[1]) {
10112                 data = nla_data((void *)cb->args[1]);
10113                 data_len = nla_len((void *)cb->args[1]);
10114         }
10115
10116         if (!rdev->ops->testmode_dump) {
10117                 err = -EOPNOTSUPP;
10118                 goto out_err;
10119         }
10120
10121         while (1) {
10122                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10123                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10124                                            NL80211_CMD_TESTMODE);
10125                 struct nlattr *tmdata;
10126
10127                 if (!hdr)
10128                         break;
10129
10130                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10131                         genlmsg_cancel(skb, hdr);
10132                         break;
10133                 }
10134
10135                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10136                 if (!tmdata) {
10137                         genlmsg_cancel(skb, hdr);
10138                         break;
10139                 }
10140                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10141                 nla_nest_end(skb, tmdata);
10142
10143                 if (err == -ENOBUFS || err == -ENOENT) {
10144                         genlmsg_cancel(skb, hdr);
10145                         break;
10146                 } else if (err) {
10147                         genlmsg_cancel(skb, hdr);
10148                         goto out_err;
10149                 }
10150
10151                 genlmsg_end(skb, hdr);
10152         }
10153
10154         err = skb->len;
10155         /* see above */
10156         cb->args[0] = phy_idx + 1;
10157  out_err:
10158         kfree(attrbuf);
10159         rtnl_unlock();
10160         return err;
10161 }
10162 #endif
10163
10164 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10165 {
10166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10167         struct net_device *dev = info->user_ptr[1];
10168         struct cfg80211_connect_params connect;
10169         struct wiphy *wiphy;
10170         struct cfg80211_cached_keys *connkeys = NULL;
10171         u32 freq = 0;
10172         int err;
10173
10174         memset(&connect, 0, sizeof(connect));
10175
10176         if (!info->attrs[NL80211_ATTR_SSID] ||
10177             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10178                 return -EINVAL;
10179
10180         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10181                 connect.auth_type =
10182                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10183                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10184                                              NL80211_CMD_CONNECT))
10185                         return -EINVAL;
10186         } else
10187                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10188
10189         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10190
10191         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10192             !wiphy_ext_feature_isset(&rdev->wiphy,
10193                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10194                 return -EINVAL;
10195         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10196
10197         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10198                                       NL80211_MAX_NR_CIPHER_SUITES);
10199         if (err)
10200                 return err;
10201
10202         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10203             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10204                 return -EOPNOTSUPP;
10205
10206         wiphy = &rdev->wiphy;
10207
10208         connect.bg_scan_period = -1;
10209         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10210                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10211                 connect.bg_scan_period =
10212                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10213         }
10214
10215         if (info->attrs[NL80211_ATTR_MAC])
10216                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10217         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10218                 connect.bssid_hint =
10219                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10220         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10221         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10222
10223         if (info->attrs[NL80211_ATTR_IE]) {
10224                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10225                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10226         }
10227
10228         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10229                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10230                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10231                     !wiphy_ext_feature_isset(&rdev->wiphy,
10232                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10233                         return -EOPNOTSUPP;
10234         } else {
10235                 connect.mfp = NL80211_MFP_NO;
10236         }
10237
10238         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10239                 connect.prev_bssid =
10240                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10241
10242         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10243                 freq = MHZ_TO_KHZ(nla_get_u32(
10244                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10245         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10246                 freq +=
10247                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10248
10249         if (freq) {
10250                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10251                 if (!connect.channel)
10252                         return -EINVAL;
10253         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10254                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10255                 freq = MHZ_TO_KHZ(freq);
10256                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10257                 if (!connect.channel_hint)
10258                         return -EINVAL;
10259         }
10260
10261         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10262                 connect.edmg.channels =
10263                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10264
10265                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10266                         connect.edmg.bw_config =
10267                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10268         }
10269
10270         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10271                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10272                 if (IS_ERR(connkeys))
10273                         return PTR_ERR(connkeys);
10274         }
10275
10276         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10277                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10278
10279         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10280                 memcpy(&connect.ht_capa_mask,
10281                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10282                        sizeof(connect.ht_capa_mask));
10283
10284         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10285                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10286                         kzfree(connkeys);
10287                         return -EINVAL;
10288                 }
10289                 memcpy(&connect.ht_capa,
10290                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10291                        sizeof(connect.ht_capa));
10292         }
10293
10294         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10295                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10296
10297         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10298                 memcpy(&connect.vht_capa_mask,
10299                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10300                        sizeof(connect.vht_capa_mask));
10301
10302         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10303                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10304                         kzfree(connkeys);
10305                         return -EINVAL;
10306                 }
10307                 memcpy(&connect.vht_capa,
10308                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10309                        sizeof(connect.vht_capa));
10310         }
10311
10312         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10313                 if (!((rdev->wiphy.features &
10314                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10315                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10316                     !wiphy_ext_feature_isset(&rdev->wiphy,
10317                                              NL80211_EXT_FEATURE_RRM)) {
10318                         kzfree(connkeys);
10319                         return -EINVAL;
10320                 }
10321                 connect.flags |= ASSOC_REQ_USE_RRM;
10322         }
10323
10324         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10325         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10326                 kzfree(connkeys);
10327                 return -EOPNOTSUPP;
10328         }
10329
10330         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10331                 /* bss selection makes no sense if bssid is set */
10332                 if (connect.bssid) {
10333                         kzfree(connkeys);
10334                         return -EINVAL;
10335                 }
10336
10337                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10338                                        wiphy, &connect.bss_select);
10339                 if (err) {
10340                         kzfree(connkeys);
10341                         return err;
10342                 }
10343         }
10344
10345         if (wiphy_ext_feature_isset(&rdev->wiphy,
10346                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10347             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10348             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10349             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10350             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10351                 connect.fils_erp_username =
10352                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10353                 connect.fils_erp_username_len =
10354                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10355                 connect.fils_erp_realm =
10356                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10357                 connect.fils_erp_realm_len =
10358                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10359                 connect.fils_erp_next_seq_num =
10360                         nla_get_u16(
10361                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10362                 connect.fils_erp_rrk =
10363                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10364                 connect.fils_erp_rrk_len =
10365                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10366         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10367                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10368                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10369                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10370                 kzfree(connkeys);
10371                 return -EINVAL;
10372         }
10373
10374         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10375                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10376                         kzfree(connkeys);
10377                         GENL_SET_ERR_MSG(info,
10378                                          "external auth requires connection ownership");
10379                         return -EINVAL;
10380                 }
10381                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10382         }
10383
10384         wdev_lock(dev->ieee80211_ptr);
10385
10386         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10387                                connect.prev_bssid);
10388         if (err)
10389                 kzfree(connkeys);
10390
10391         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10392                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10393                 if (connect.bssid)
10394                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10395                                connect.bssid, ETH_ALEN);
10396                 else
10397                         memset(dev->ieee80211_ptr->disconnect_bssid,
10398                                0, ETH_ALEN);
10399         }
10400
10401         wdev_unlock(dev->ieee80211_ptr);
10402
10403         return err;
10404 }
10405
10406 static int nl80211_update_connect_params(struct sk_buff *skb,
10407                                          struct genl_info *info)
10408 {
10409         struct cfg80211_connect_params connect = {};
10410         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10411         struct net_device *dev = info->user_ptr[1];
10412         struct wireless_dev *wdev = dev->ieee80211_ptr;
10413         bool fils_sk_offload;
10414         u32 auth_type;
10415         u32 changed = 0;
10416         int ret;
10417
10418         if (!rdev->ops->update_connect_params)
10419                 return -EOPNOTSUPP;
10420
10421         if (info->attrs[NL80211_ATTR_IE]) {
10422                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10423                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10424                 changed |= UPDATE_ASSOC_IES;
10425         }
10426
10427         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10428                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10429
10430         /*
10431          * when driver supports fils-sk offload all attributes must be
10432          * provided. So the else covers "fils-sk-not-all" and
10433          * "no-fils-sk-any".
10434          */
10435         if (fils_sk_offload &&
10436             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10437             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10438             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10439             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10440                 connect.fils_erp_username =
10441                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10442                 connect.fils_erp_username_len =
10443                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10444                 connect.fils_erp_realm =
10445                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10446                 connect.fils_erp_realm_len =
10447                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10448                 connect.fils_erp_next_seq_num =
10449                         nla_get_u16(
10450                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10451                 connect.fils_erp_rrk =
10452                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10453                 connect.fils_erp_rrk_len =
10454                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10455                 changed |= UPDATE_FILS_ERP_INFO;
10456         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10457                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10458                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10459                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10460                 return -EINVAL;
10461         }
10462
10463         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10464                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10465                 if (!nl80211_valid_auth_type(rdev, auth_type,
10466                                              NL80211_CMD_CONNECT))
10467                         return -EINVAL;
10468
10469                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10470                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10471                         return -EINVAL;
10472
10473                 connect.auth_type = auth_type;
10474                 changed |= UPDATE_AUTH_TYPE;
10475         }
10476
10477         wdev_lock(dev->ieee80211_ptr);
10478         if (!wdev->current_bss)
10479                 ret = -ENOLINK;
10480         else
10481                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10482         wdev_unlock(dev->ieee80211_ptr);
10483
10484         return ret;
10485 }
10486
10487 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10488 {
10489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10490         struct net_device *dev = info->user_ptr[1];
10491         u16 reason;
10492         int ret;
10493
10494         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10495             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10496                 return -EPERM;
10497
10498         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10499                 reason = WLAN_REASON_DEAUTH_LEAVING;
10500         else
10501                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10502
10503         if (reason == 0)
10504                 return -EINVAL;
10505
10506         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10507             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10508                 return -EOPNOTSUPP;
10509
10510         wdev_lock(dev->ieee80211_ptr);
10511         ret = cfg80211_disconnect(rdev, dev, reason, true);
10512         wdev_unlock(dev->ieee80211_ptr);
10513         return ret;
10514 }
10515
10516 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10517 {
10518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10519         struct net *net;
10520         int err;
10521
10522         if (info->attrs[NL80211_ATTR_PID]) {
10523                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10524
10525                 net = get_net_ns_by_pid(pid);
10526         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10527                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10528
10529                 net = get_net_ns_by_fd(fd);
10530         } else {
10531                 return -EINVAL;
10532         }
10533
10534         if (IS_ERR(net))
10535                 return PTR_ERR(net);
10536
10537         err = 0;
10538
10539         /* check if anything to do */
10540         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10541                 err = cfg80211_switch_netns(rdev, net);
10542
10543         put_net(net);
10544         return err;
10545 }
10546
10547 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10548 {
10549         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10550         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10551                         struct cfg80211_pmksa *pmksa) = NULL;
10552         struct net_device *dev = info->user_ptr[1];
10553         struct cfg80211_pmksa pmksa;
10554
10555         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10556
10557         if (!info->attrs[NL80211_ATTR_PMKID])
10558                 return -EINVAL;
10559
10560         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10561
10562         if (info->attrs[NL80211_ATTR_MAC]) {
10563                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10564         } else if (info->attrs[NL80211_ATTR_SSID] &&
10565                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10566                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10567                     info->attrs[NL80211_ATTR_PMK])) {
10568                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10569                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10570                 pmksa.cache_id =
10571                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10572         } else {
10573                 return -EINVAL;
10574         }
10575         if (info->attrs[NL80211_ATTR_PMK]) {
10576                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10577                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10578         }
10579
10580         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10581                 pmksa.pmk_lifetime =
10582                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10583
10584         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10585                 pmksa.pmk_reauth_threshold =
10586                         nla_get_u8(
10587                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10588
10589         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10590             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10591             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10592               wiphy_ext_feature_isset(&rdev->wiphy,
10593                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10594                 return -EOPNOTSUPP;
10595
10596         switch (info->genlhdr->cmd) {
10597         case NL80211_CMD_SET_PMKSA:
10598                 rdev_ops = rdev->ops->set_pmksa;
10599                 break;
10600         case NL80211_CMD_DEL_PMKSA:
10601                 rdev_ops = rdev->ops->del_pmksa;
10602                 break;
10603         default:
10604                 WARN_ON(1);
10605                 break;
10606         }
10607
10608         if (!rdev_ops)
10609                 return -EOPNOTSUPP;
10610
10611         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10612 }
10613
10614 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10615 {
10616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10617         struct net_device *dev = info->user_ptr[1];
10618
10619         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10620             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10621                 return -EOPNOTSUPP;
10622
10623         if (!rdev->ops->flush_pmksa)
10624                 return -EOPNOTSUPP;
10625
10626         return rdev_flush_pmksa(rdev, dev);
10627 }
10628
10629 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10630 {
10631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10632         struct net_device *dev = info->user_ptr[1];
10633         u8 action_code, dialog_token;
10634         u32 peer_capability = 0;
10635         u16 status_code;
10636         u8 *peer;
10637         bool initiator;
10638
10639         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10640             !rdev->ops->tdls_mgmt)
10641                 return -EOPNOTSUPP;
10642
10643         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10644             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10645             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10646             !info->attrs[NL80211_ATTR_IE] ||
10647             !info->attrs[NL80211_ATTR_MAC])
10648                 return -EINVAL;
10649
10650         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10651         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10652         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10653         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10654         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10655         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10656                 peer_capability =
10657                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10658
10659         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10660                               dialog_token, status_code, peer_capability,
10661                               initiator,
10662                               nla_data(info->attrs[NL80211_ATTR_IE]),
10663                               nla_len(info->attrs[NL80211_ATTR_IE]));
10664 }
10665
10666 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10667 {
10668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10669         struct net_device *dev = info->user_ptr[1];
10670         enum nl80211_tdls_operation operation;
10671         u8 *peer;
10672
10673         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10674             !rdev->ops->tdls_oper)
10675                 return -EOPNOTSUPP;
10676
10677         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10678             !info->attrs[NL80211_ATTR_MAC])
10679                 return -EINVAL;
10680
10681         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10682         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10683
10684         return rdev_tdls_oper(rdev, dev, peer, operation);
10685 }
10686
10687 static int nl80211_remain_on_channel(struct sk_buff *skb,
10688                                      struct genl_info *info)
10689 {
10690         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10691         struct wireless_dev *wdev = info->user_ptr[1];
10692         struct cfg80211_chan_def chandef;
10693         const struct cfg80211_chan_def *compat_chandef;
10694         struct sk_buff *msg;
10695         void *hdr;
10696         u64 cookie;
10697         u32 duration;
10698         int err;
10699
10700         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10701             !info->attrs[NL80211_ATTR_DURATION])
10702                 return -EINVAL;
10703
10704         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10705
10706         if (!rdev->ops->remain_on_channel ||
10707             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10708                 return -EOPNOTSUPP;
10709
10710         /*
10711          * We should be on that channel for at least a minimum amount of
10712          * time (10ms) but no longer than the driver supports.
10713          */
10714         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10715             duration > rdev->wiphy.max_remain_on_channel_duration)
10716                 return -EINVAL;
10717
10718         err = nl80211_parse_chandef(rdev, info, &chandef);
10719         if (err)
10720                 return err;
10721
10722         wdev_lock(wdev);
10723         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10724             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10725                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10726                                                              &chandef);
10727                 if (compat_chandef != &chandef) {
10728                         wdev_unlock(wdev);
10729                         return -EBUSY;
10730                 }
10731         }
10732         wdev_unlock(wdev);
10733
10734         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10735         if (!msg)
10736                 return -ENOMEM;
10737
10738         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10739                              NL80211_CMD_REMAIN_ON_CHANNEL);
10740         if (!hdr) {
10741                 err = -ENOBUFS;
10742                 goto free_msg;
10743         }
10744
10745         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10746                                      duration, &cookie);
10747
10748         if (err)
10749                 goto free_msg;
10750
10751         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10752                               NL80211_ATTR_PAD))
10753                 goto nla_put_failure;
10754
10755         genlmsg_end(msg, hdr);
10756
10757         return genlmsg_reply(msg, info);
10758
10759  nla_put_failure:
10760         err = -ENOBUFS;
10761  free_msg:
10762         nlmsg_free(msg);
10763         return err;
10764 }
10765
10766 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10767                                             struct genl_info *info)
10768 {
10769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10770         struct wireless_dev *wdev = info->user_ptr[1];
10771         u64 cookie;
10772
10773         if (!info->attrs[NL80211_ATTR_COOKIE])
10774                 return -EINVAL;
10775
10776         if (!rdev->ops->cancel_remain_on_channel)
10777                 return -EOPNOTSUPP;
10778
10779         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10780
10781         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10782 }
10783
10784 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10785                                        struct genl_info *info)
10786 {
10787         struct cfg80211_bitrate_mask mask;
10788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10789         struct net_device *dev = info->user_ptr[1];
10790         int err;
10791
10792         if (!rdev->ops->set_bitrate_mask)
10793                 return -EOPNOTSUPP;
10794
10795         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
10796                                             NL80211_ATTR_TX_RATES, &mask);
10797         if (err)
10798                 return err;
10799
10800         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10801 }
10802
10803 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10804 {
10805         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10806         struct wireless_dev *wdev = info->user_ptr[1];
10807         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10808
10809         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10810                 return -EINVAL;
10811
10812         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10813                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10814
10815         switch (wdev->iftype) {
10816         case NL80211_IFTYPE_STATION:
10817         case NL80211_IFTYPE_ADHOC:
10818         case NL80211_IFTYPE_P2P_CLIENT:
10819         case NL80211_IFTYPE_AP:
10820         case NL80211_IFTYPE_AP_VLAN:
10821         case NL80211_IFTYPE_MESH_POINT:
10822         case NL80211_IFTYPE_P2P_GO:
10823         case NL80211_IFTYPE_P2P_DEVICE:
10824                 break;
10825         case NL80211_IFTYPE_NAN:
10826         default:
10827                 return -EOPNOTSUPP;
10828         }
10829
10830         /* not much point in registering if we can't reply */
10831         if (!rdev->ops->mgmt_tx)
10832                 return -EOPNOTSUPP;
10833
10834         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
10835             !wiphy_ext_feature_isset(&rdev->wiphy,
10836                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
10837                 GENL_SET_ERR_MSG(info,
10838                                  "multicast RX registrations are not supported");
10839                 return -EOPNOTSUPP;
10840         }
10841
10842         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10843                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10844                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10845                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
10846                                            info->extack);
10847 }
10848
10849 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10850 {
10851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10852         struct wireless_dev *wdev = info->user_ptr[1];
10853         struct cfg80211_chan_def chandef;
10854         int err;
10855         void *hdr = NULL;
10856         u64 cookie;
10857         struct sk_buff *msg = NULL;
10858         struct cfg80211_mgmt_tx_params params = {
10859                 .dont_wait_for_ack =
10860                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10861         };
10862
10863         if (!info->attrs[NL80211_ATTR_FRAME])
10864                 return -EINVAL;
10865
10866         if (!rdev->ops->mgmt_tx)
10867                 return -EOPNOTSUPP;
10868
10869         switch (wdev->iftype) {
10870         case NL80211_IFTYPE_P2P_DEVICE:
10871                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10872                         return -EINVAL;
10873         case NL80211_IFTYPE_STATION:
10874         case NL80211_IFTYPE_ADHOC:
10875         case NL80211_IFTYPE_P2P_CLIENT:
10876         case NL80211_IFTYPE_AP:
10877         case NL80211_IFTYPE_AP_VLAN:
10878         case NL80211_IFTYPE_MESH_POINT:
10879         case NL80211_IFTYPE_P2P_GO:
10880                 break;
10881         case NL80211_IFTYPE_NAN:
10882         default:
10883                 return -EOPNOTSUPP;
10884         }
10885
10886         if (info->attrs[NL80211_ATTR_DURATION]) {
10887                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10888                         return -EINVAL;
10889                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10890
10891                 /*
10892                  * We should wait on the channel for at least a minimum amount
10893                  * of time (10ms) but no longer than the driver supports.
10894                  */
10895                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10896                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10897                         return -EINVAL;
10898         }
10899
10900         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10901
10902         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10903                 return -EINVAL;
10904
10905         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10906
10907         /* get the channel if any has been specified, otherwise pass NULL to
10908          * the driver. The latter will use the current one
10909          */
10910         chandef.chan = NULL;
10911         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10912                 err = nl80211_parse_chandef(rdev, info, &chandef);
10913                 if (err)
10914                         return err;
10915         }
10916
10917         if (!chandef.chan && params.offchan)
10918                 return -EINVAL;
10919
10920         wdev_lock(wdev);
10921         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10922                 wdev_unlock(wdev);
10923                 return -EBUSY;
10924         }
10925         wdev_unlock(wdev);
10926
10927         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10928         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10929
10930         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10931                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10932                 int i;
10933
10934                 if (len % sizeof(u16))
10935                         return -EINVAL;
10936
10937                 params.n_csa_offsets = len / sizeof(u16);
10938                 params.csa_offsets =
10939                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10940
10941                 /* check that all the offsets fit the frame */
10942                 for (i = 0; i < params.n_csa_offsets; i++) {
10943                         if (params.csa_offsets[i] >= params.len)
10944                                 return -EINVAL;
10945                 }
10946         }
10947
10948         if (!params.dont_wait_for_ack) {
10949                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10950                 if (!msg)
10951                         return -ENOMEM;
10952
10953                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10954                                      NL80211_CMD_FRAME);
10955                 if (!hdr) {
10956                         err = -ENOBUFS;
10957                         goto free_msg;
10958                 }
10959         }
10960
10961         params.chan = chandef.chan;
10962         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10963         if (err)
10964                 goto free_msg;
10965
10966         if (msg) {
10967                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10968                                       NL80211_ATTR_PAD))
10969                         goto nla_put_failure;
10970
10971                 genlmsg_end(msg, hdr);
10972                 return genlmsg_reply(msg, info);
10973         }
10974
10975         return 0;
10976
10977  nla_put_failure:
10978         err = -ENOBUFS;
10979  free_msg:
10980         nlmsg_free(msg);
10981         return err;
10982 }
10983
10984 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10985 {
10986         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10987         struct wireless_dev *wdev = info->user_ptr[1];
10988         u64 cookie;
10989
10990         if (!info->attrs[NL80211_ATTR_COOKIE])
10991                 return -EINVAL;
10992
10993         if (!rdev->ops->mgmt_tx_cancel_wait)
10994                 return -EOPNOTSUPP;
10995
10996         switch (wdev->iftype) {
10997         case NL80211_IFTYPE_STATION:
10998         case NL80211_IFTYPE_ADHOC:
10999         case NL80211_IFTYPE_P2P_CLIENT:
11000         case NL80211_IFTYPE_AP:
11001         case NL80211_IFTYPE_AP_VLAN:
11002         case NL80211_IFTYPE_P2P_GO:
11003         case NL80211_IFTYPE_P2P_DEVICE:
11004                 break;
11005         case NL80211_IFTYPE_NAN:
11006         default:
11007                 return -EOPNOTSUPP;
11008         }
11009
11010         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11011
11012         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11013 }
11014
11015 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11016 {
11017         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11018         struct wireless_dev *wdev;
11019         struct net_device *dev = info->user_ptr[1];
11020         u8 ps_state;
11021         bool state;
11022         int err;
11023
11024         if (!info->attrs[NL80211_ATTR_PS_STATE])
11025                 return -EINVAL;
11026
11027         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11028
11029         wdev = dev->ieee80211_ptr;
11030
11031         if (!rdev->ops->set_power_mgmt)
11032                 return -EOPNOTSUPP;
11033
11034         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11035
11036         if (state == wdev->ps)
11037                 return 0;
11038
11039         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11040         if (!err)
11041                 wdev->ps = state;
11042         return err;
11043 }
11044
11045 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11046 {
11047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11048         enum nl80211_ps_state ps_state;
11049         struct wireless_dev *wdev;
11050         struct net_device *dev = info->user_ptr[1];
11051         struct sk_buff *msg;
11052         void *hdr;
11053         int err;
11054
11055         wdev = dev->ieee80211_ptr;
11056
11057         if (!rdev->ops->set_power_mgmt)
11058                 return -EOPNOTSUPP;
11059
11060         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11061         if (!msg)
11062                 return -ENOMEM;
11063
11064         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11065                              NL80211_CMD_GET_POWER_SAVE);
11066         if (!hdr) {
11067                 err = -ENOBUFS;
11068                 goto free_msg;
11069         }
11070
11071         if (wdev->ps)
11072                 ps_state = NL80211_PS_ENABLED;
11073         else
11074                 ps_state = NL80211_PS_DISABLED;
11075
11076         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11077                 goto nla_put_failure;
11078
11079         genlmsg_end(msg, hdr);
11080         return genlmsg_reply(msg, info);
11081
11082  nla_put_failure:
11083         err = -ENOBUFS;
11084  free_msg:
11085         nlmsg_free(msg);
11086         return err;
11087 }
11088
11089 static const struct nla_policy
11090 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11091         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11092         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11093         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11094         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11095         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11096         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11097         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11098 };
11099
11100 static int nl80211_set_cqm_txe(struct genl_info *info,
11101                                u32 rate, u32 pkts, u32 intvl)
11102 {
11103         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11104         struct net_device *dev = info->user_ptr[1];
11105         struct wireless_dev *wdev = dev->ieee80211_ptr;
11106
11107         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11108                 return -EINVAL;
11109
11110         if (!rdev->ops->set_cqm_txe_config)
11111                 return -EOPNOTSUPP;
11112
11113         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11114             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11115                 return -EOPNOTSUPP;
11116
11117         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11118 }
11119
11120 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11121                                     struct net_device *dev)
11122 {
11123         struct wireless_dev *wdev = dev->ieee80211_ptr;
11124         s32 last, low, high;
11125         u32 hyst;
11126         int i, n, low_index;
11127         int err;
11128
11129         /* RSSI reporting disabled? */
11130         if (!wdev->cqm_config)
11131                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11132
11133         /*
11134          * Obtain current RSSI value if possible, if not and no RSSI threshold
11135          * event has been received yet, we should receive an event after a
11136          * connection is established and enough beacons received to calculate
11137          * the average.
11138          */
11139         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11140             rdev->ops->get_station) {
11141                 struct station_info sinfo = {};
11142                 u8 *mac_addr;
11143
11144                 mac_addr = wdev->current_bss->pub.bssid;
11145
11146                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11147                 if (err)
11148                         return err;
11149
11150                 cfg80211_sinfo_release_content(&sinfo);
11151                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11152                         wdev->cqm_config->last_rssi_event_value =
11153                                 (s8) sinfo.rx_beacon_signal_avg;
11154         }
11155
11156         last = wdev->cqm_config->last_rssi_event_value;
11157         hyst = wdev->cqm_config->rssi_hyst;
11158         n = wdev->cqm_config->n_rssi_thresholds;
11159
11160         for (i = 0; i < n; i++) {
11161                 i = array_index_nospec(i, n);
11162                 if (last < wdev->cqm_config->rssi_thresholds[i])
11163                         break;
11164         }
11165
11166         low_index = i - 1;
11167         if (low_index >= 0) {
11168                 low_index = array_index_nospec(low_index, n);
11169                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11170         } else {
11171                 low = S32_MIN;
11172         }
11173         if (i < n) {
11174                 i = array_index_nospec(i, n);
11175                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11176         } else {
11177                 high = S32_MAX;
11178         }
11179
11180         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11181 }
11182
11183 static int nl80211_set_cqm_rssi(struct genl_info *info,
11184                                 const s32 *thresholds, int n_thresholds,
11185                                 u32 hysteresis)
11186 {
11187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11188         struct net_device *dev = info->user_ptr[1];
11189         struct wireless_dev *wdev = dev->ieee80211_ptr;
11190         int i, err;
11191         s32 prev = S32_MIN;
11192
11193         /* Check all values negative and sorted */
11194         for (i = 0; i < n_thresholds; i++) {
11195                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11196                         return -EINVAL;
11197
11198                 prev = thresholds[i];
11199         }
11200
11201         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11202             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11203                 return -EOPNOTSUPP;
11204
11205         wdev_lock(wdev);
11206         cfg80211_cqm_config_free(wdev);
11207         wdev_unlock(wdev);
11208
11209         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11210                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11211                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11212
11213                 return rdev_set_cqm_rssi_config(rdev, dev,
11214                                                 thresholds[0], hysteresis);
11215         }
11216
11217         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11218                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11219                 return -EOPNOTSUPP;
11220
11221         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11222                 n_thresholds = 0;
11223
11224         wdev_lock(wdev);
11225         if (n_thresholds) {
11226                 struct cfg80211_cqm_config *cqm_config;
11227
11228                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11229                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11230                 if (!cqm_config) {
11231                         err = -ENOMEM;
11232                         goto unlock;
11233                 }
11234
11235                 cqm_config->rssi_hyst = hysteresis;
11236                 cqm_config->n_rssi_thresholds = n_thresholds;
11237                 memcpy(cqm_config->rssi_thresholds, thresholds,
11238                        n_thresholds * sizeof(s32));
11239
11240                 wdev->cqm_config = cqm_config;
11241         }
11242
11243         err = cfg80211_cqm_rssi_update(rdev, dev);
11244
11245 unlock:
11246         wdev_unlock(wdev);
11247
11248         return err;
11249 }
11250
11251 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11252 {
11253         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11254         struct nlattr *cqm;
11255         int err;
11256
11257         cqm = info->attrs[NL80211_ATTR_CQM];
11258         if (!cqm)
11259                 return -EINVAL;
11260
11261         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11262                                           nl80211_attr_cqm_policy,
11263                                           info->extack);
11264         if (err)
11265                 return err;
11266
11267         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11268             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11269                 const s32 *thresholds =
11270                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11271                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11272                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11273
11274                 if (len % 4)
11275                         return -EINVAL;
11276
11277                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11278                                             hysteresis);
11279         }
11280
11281         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11282             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11283             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11284                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11285                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11286                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11287
11288                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11289         }
11290
11291         return -EINVAL;
11292 }
11293
11294 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11295 {
11296         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11297         struct net_device *dev = info->user_ptr[1];
11298         struct ocb_setup setup = {};
11299         int err;
11300
11301         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11302         if (err)
11303                 return err;
11304
11305         return cfg80211_join_ocb(rdev, dev, &setup);
11306 }
11307
11308 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11309 {
11310         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11311         struct net_device *dev = info->user_ptr[1];
11312
11313         return cfg80211_leave_ocb(rdev, dev);
11314 }
11315
11316 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11317 {
11318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11319         struct net_device *dev = info->user_ptr[1];
11320         struct mesh_config cfg;
11321         struct mesh_setup setup;
11322         int err;
11323
11324         /* start with default */
11325         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11326         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11327
11328         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11329                 /* and parse parameters if given */
11330                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11331                 if (err)
11332                         return err;
11333         }
11334
11335         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11336             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11337                 return -EINVAL;
11338
11339         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11340         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11341
11342         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11343             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11344                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11345                         return -EINVAL;
11346
11347         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11348                 setup.beacon_interval =
11349                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11350
11351                 err = cfg80211_validate_beacon_int(rdev,
11352                                                    NL80211_IFTYPE_MESH_POINT,
11353                                                    setup.beacon_interval);
11354                 if (err)
11355                         return err;
11356         }
11357
11358         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11359                 setup.dtim_period =
11360                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11361                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11362                         return -EINVAL;
11363         }
11364
11365         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11366                 /* parse additional setup parameters if given */
11367                 err = nl80211_parse_mesh_setup(info, &setup);
11368                 if (err)
11369                         return err;
11370         }
11371
11372         if (setup.user_mpm)
11373                 cfg.auto_open_plinks = false;
11374
11375         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11376                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11377                 if (err)
11378                         return err;
11379         } else {
11380                 /* __cfg80211_join_mesh() will sort it out */
11381                 setup.chandef.chan = NULL;
11382         }
11383
11384         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11385                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11386                 int n_rates =
11387                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11388                 struct ieee80211_supported_band *sband;
11389
11390                 if (!setup.chandef.chan)
11391                         return -EINVAL;
11392
11393                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11394
11395                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11396                                              &setup.basic_rates);
11397                 if (err)
11398                         return err;
11399         }
11400
11401         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11402                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11403                                                     NL80211_ATTR_TX_RATES,
11404                                                     &setup.beacon_rate);
11405                 if (err)
11406                         return err;
11407
11408                 if (!setup.chandef.chan)
11409                         return -EINVAL;
11410
11411                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11412                                               &setup.beacon_rate);
11413                 if (err)
11414                         return err;
11415         }
11416
11417         setup.userspace_handles_dfs =
11418                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11419
11420         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11421                 int r = validate_pae_over_nl80211(rdev, info);
11422
11423                 if (r < 0)
11424                         return r;
11425
11426                 setup.control_port_over_nl80211 = true;
11427         }
11428
11429         wdev_lock(dev->ieee80211_ptr);
11430         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11431         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11432                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11433         wdev_unlock(dev->ieee80211_ptr);
11434
11435         return err;
11436 }
11437
11438 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11439 {
11440         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11441         struct net_device *dev = info->user_ptr[1];
11442
11443         return cfg80211_leave_mesh(rdev, dev);
11444 }
11445
11446 #ifdef CONFIG_PM
11447 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11448                                         struct cfg80211_registered_device *rdev)
11449 {
11450         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11451         struct nlattr *nl_pats, *nl_pat;
11452         int i, pat_len;
11453
11454         if (!wowlan->n_patterns)
11455                 return 0;
11456
11457         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11458         if (!nl_pats)
11459                 return -ENOBUFS;
11460
11461         for (i = 0; i < wowlan->n_patterns; i++) {
11462                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11463                 if (!nl_pat)
11464                         return -ENOBUFS;
11465                 pat_len = wowlan->patterns[i].pattern_len;
11466                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11467                             wowlan->patterns[i].mask) ||
11468                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11469                             wowlan->patterns[i].pattern) ||
11470                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11471                                 wowlan->patterns[i].pkt_offset))
11472                         return -ENOBUFS;
11473                 nla_nest_end(msg, nl_pat);
11474         }
11475         nla_nest_end(msg, nl_pats);
11476
11477         return 0;
11478 }
11479
11480 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11481                                    struct cfg80211_wowlan_tcp *tcp)
11482 {
11483         struct nlattr *nl_tcp;
11484
11485         if (!tcp)
11486                 return 0;
11487
11488         nl_tcp = nla_nest_start_noflag(msg,
11489                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11490         if (!nl_tcp)
11491                 return -ENOBUFS;
11492
11493         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11494             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11495             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11496             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11497             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11498             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11499                     tcp->payload_len, tcp->payload) ||
11500             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11501                         tcp->data_interval) ||
11502             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11503                     tcp->wake_len, tcp->wake_data) ||
11504             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11505                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11506                 return -ENOBUFS;
11507
11508         if (tcp->payload_seq.len &&
11509             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11510                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11511                 return -ENOBUFS;
11512
11513         if (tcp->payload_tok.len &&
11514             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11515                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11516                     &tcp->payload_tok))
11517                 return -ENOBUFS;
11518
11519         nla_nest_end(msg, nl_tcp);
11520
11521         return 0;
11522 }
11523
11524 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11525                                   struct cfg80211_sched_scan_request *req)
11526 {
11527         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11528         int i;
11529
11530         if (!req)
11531                 return 0;
11532
11533         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11534         if (!nd)
11535                 return -ENOBUFS;
11536
11537         if (req->n_scan_plans == 1 &&
11538             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11539                         req->scan_plans[0].interval * 1000))
11540                 return -ENOBUFS;
11541
11542         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11543                 return -ENOBUFS;
11544
11545         if (req->relative_rssi_set) {
11546                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11547
11548                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11549                                req->relative_rssi))
11550                         return -ENOBUFS;
11551
11552                 rssi_adjust.band = req->rssi_adjust.band;
11553                 rssi_adjust.delta = req->rssi_adjust.delta;
11554                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11555                             sizeof(rssi_adjust), &rssi_adjust))
11556                         return -ENOBUFS;
11557         }
11558
11559         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11560         if (!freqs)
11561                 return -ENOBUFS;
11562
11563         for (i = 0; i < req->n_channels; i++) {
11564                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11565                         return -ENOBUFS;
11566         }
11567
11568         nla_nest_end(msg, freqs);
11569
11570         if (req->n_match_sets) {
11571                 matches = nla_nest_start_noflag(msg,
11572                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11573                 if (!matches)
11574                         return -ENOBUFS;
11575
11576                 for (i = 0; i < req->n_match_sets; i++) {
11577                         match = nla_nest_start_noflag(msg, i);
11578                         if (!match)
11579                                 return -ENOBUFS;
11580
11581                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11582                                     req->match_sets[i].ssid.ssid_len,
11583                                     req->match_sets[i].ssid.ssid))
11584                                 return -ENOBUFS;
11585                         nla_nest_end(msg, match);
11586                 }
11587                 nla_nest_end(msg, matches);
11588         }
11589
11590         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11591         if (!scan_plans)
11592                 return -ENOBUFS;
11593
11594         for (i = 0; i < req->n_scan_plans; i++) {
11595                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11596                 if (!scan_plan)
11597                         return -ENOBUFS;
11598
11599                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11600                                 req->scan_plans[i].interval) ||
11601                     (req->scan_plans[i].iterations &&
11602                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11603                                  req->scan_plans[i].iterations)))
11604                         return -ENOBUFS;
11605                 nla_nest_end(msg, scan_plan);
11606         }
11607         nla_nest_end(msg, scan_plans);
11608
11609         nla_nest_end(msg, nd);
11610
11611         return 0;
11612 }
11613
11614 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11615 {
11616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11617         struct sk_buff *msg;
11618         void *hdr;
11619         u32 size = NLMSG_DEFAULT_SIZE;
11620
11621         if (!rdev->wiphy.wowlan)
11622                 return -EOPNOTSUPP;
11623
11624         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11625                 /* adjust size to have room for all the data */
11626                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11627                         rdev->wiphy.wowlan_config->tcp->payload_len +
11628                         rdev->wiphy.wowlan_config->tcp->wake_len +
11629                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11630         }
11631
11632         msg = nlmsg_new(size, GFP_KERNEL);
11633         if (!msg)
11634                 return -ENOMEM;
11635
11636         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11637                              NL80211_CMD_GET_WOWLAN);
11638         if (!hdr)
11639                 goto nla_put_failure;
11640
11641         if (rdev->wiphy.wowlan_config) {
11642                 struct nlattr *nl_wowlan;
11643
11644                 nl_wowlan = nla_nest_start_noflag(msg,
11645                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11646                 if (!nl_wowlan)
11647                         goto nla_put_failure;
11648
11649                 if ((rdev->wiphy.wowlan_config->any &&
11650                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11651                     (rdev->wiphy.wowlan_config->disconnect &&
11652                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11653                     (rdev->wiphy.wowlan_config->magic_pkt &&
11654                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11655                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11656                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11657                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11658                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11659                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11660                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11661                     (rdev->wiphy.wowlan_config->rfkill_release &&
11662                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11663                         goto nla_put_failure;
11664
11665                 if (nl80211_send_wowlan_patterns(msg, rdev))
11666                         goto nla_put_failure;
11667
11668                 if (nl80211_send_wowlan_tcp(msg,
11669                                             rdev->wiphy.wowlan_config->tcp))
11670                         goto nla_put_failure;
11671
11672                 if (nl80211_send_wowlan_nd(
11673                             msg,
11674                             rdev->wiphy.wowlan_config->nd_config))
11675                         goto nla_put_failure;
11676
11677                 nla_nest_end(msg, nl_wowlan);
11678         }
11679
11680         genlmsg_end(msg, hdr);
11681         return genlmsg_reply(msg, info);
11682
11683 nla_put_failure:
11684         nlmsg_free(msg);
11685         return -ENOBUFS;
11686 }
11687
11688 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11689                                     struct nlattr *attr,
11690                                     struct cfg80211_wowlan *trig)
11691 {
11692         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11693         struct cfg80211_wowlan_tcp *cfg;
11694         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11695         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11696         u32 size;
11697         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11698         int err, port;
11699
11700         if (!rdev->wiphy.wowlan->tcp)
11701                 return -EINVAL;
11702
11703         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11704                                           nl80211_wowlan_tcp_policy, NULL);
11705         if (err)
11706                 return err;
11707
11708         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11709             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11710             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11711             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11712             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11713             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11714             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11715             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11716                 return -EINVAL;
11717
11718         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11719         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11720                 return -EINVAL;
11721
11722         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11723                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11724             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11725                 return -EINVAL;
11726
11727         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11728         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11729                 return -EINVAL;
11730
11731         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11732         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11733                 return -EINVAL;
11734
11735         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11736                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11737
11738                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11739                 tokens_size = tokln - sizeof(*tok);
11740
11741                 if (!tok->len || tokens_size % tok->len)
11742                         return -EINVAL;
11743                 if (!rdev->wiphy.wowlan->tcp->tok)
11744                         return -EINVAL;
11745                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11746                         return -EINVAL;
11747                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11748                         return -EINVAL;
11749                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11750                         return -EINVAL;
11751                 if (tok->offset + tok->len > data_size)
11752                         return -EINVAL;
11753         }
11754
11755         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11756                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11757                 if (!rdev->wiphy.wowlan->tcp->seq)
11758                         return -EINVAL;
11759                 if (seq->len == 0 || seq->len > 4)
11760                         return -EINVAL;
11761                 if (seq->len + seq->offset > data_size)
11762                         return -EINVAL;
11763         }
11764
11765         size = sizeof(*cfg);
11766         size += data_size;
11767         size += wake_size + wake_mask_size;
11768         size += tokens_size;
11769
11770         cfg = kzalloc(size, GFP_KERNEL);
11771         if (!cfg)
11772                 return -ENOMEM;
11773         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11774         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11775         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11776                ETH_ALEN);
11777         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11778                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11779         else
11780                 port = 0;
11781 #ifdef CONFIG_INET
11782         /* allocate a socket and port for it and use it */
11783         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11784                             IPPROTO_TCP, &cfg->sock, 1);
11785         if (err) {
11786                 kfree(cfg);
11787                 return err;
11788         }
11789         if (inet_csk_get_port(cfg->sock->sk, port)) {
11790                 sock_release(cfg->sock);
11791                 kfree(cfg);
11792                 return -EADDRINUSE;
11793         }
11794         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11795 #else
11796         if (!port) {
11797                 kfree(cfg);
11798                 return -EINVAL;
11799         }
11800         cfg->src_port = port;
11801 #endif
11802
11803         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11804         cfg->payload_len = data_size;
11805         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11806         memcpy((void *)cfg->payload,
11807                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11808                data_size);
11809         if (seq)
11810                 cfg->payload_seq = *seq;
11811         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11812         cfg->wake_len = wake_size;
11813         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11814         memcpy((void *)cfg->wake_data,
11815                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11816                wake_size);
11817         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11818                          data_size + wake_size;
11819         memcpy((void *)cfg->wake_mask,
11820                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11821                wake_mask_size);
11822         if (tok) {
11823                 cfg->tokens_size = tokens_size;
11824                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11825         }
11826
11827         trig->tcp = cfg;
11828
11829         return 0;
11830 }
11831
11832 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11833                                    const struct wiphy_wowlan_support *wowlan,
11834                                    struct nlattr *attr,
11835                                    struct cfg80211_wowlan *trig)
11836 {
11837         struct nlattr **tb;
11838         int err;
11839
11840         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11841         if (!tb)
11842                 return -ENOMEM;
11843
11844         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11845                 err = -EOPNOTSUPP;
11846                 goto out;
11847         }
11848
11849         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11850                                           nl80211_policy, NULL);
11851         if (err)
11852                 goto out;
11853
11854         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11855                                                    wowlan->max_nd_match_sets);
11856         err = PTR_ERR_OR_ZERO(trig->nd_config);
11857         if (err)
11858                 trig->nd_config = NULL;
11859
11860 out:
11861         kfree(tb);
11862         return err;
11863 }
11864
11865 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11866 {
11867         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11868         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11869         struct cfg80211_wowlan new_triggers = {};
11870         struct cfg80211_wowlan *ntrig;
11871         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11872         int err, i;
11873         bool prev_enabled = rdev->wiphy.wowlan_config;
11874         bool regular = false;
11875
11876         if (!wowlan)
11877                 return -EOPNOTSUPP;
11878
11879         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11880                 cfg80211_rdev_free_wowlan(rdev);
11881                 rdev->wiphy.wowlan_config = NULL;
11882                 goto set_wakeup;
11883         }
11884
11885         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11886                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11887                                           nl80211_wowlan_policy, info->extack);
11888         if (err)
11889                 return err;
11890
11891         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11892                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11893                         return -EINVAL;
11894                 new_triggers.any = true;
11895         }
11896
11897         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11898                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11899                         return -EINVAL;
11900                 new_triggers.disconnect = true;
11901                 regular = true;
11902         }
11903
11904         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11905                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11906                         return -EINVAL;
11907                 new_triggers.magic_pkt = true;
11908                 regular = true;
11909         }
11910
11911         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11912                 return -EINVAL;
11913
11914         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11915                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11916                         return -EINVAL;
11917                 new_triggers.gtk_rekey_failure = true;
11918                 regular = true;
11919         }
11920
11921         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11922                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11923                         return -EINVAL;
11924                 new_triggers.eap_identity_req = true;
11925                 regular = true;
11926         }
11927
11928         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11929                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11930                         return -EINVAL;
11931                 new_triggers.four_way_handshake = true;
11932                 regular = true;
11933         }
11934
11935         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11936                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11937                         return -EINVAL;
11938                 new_triggers.rfkill_release = true;
11939                 regular = true;
11940         }
11941
11942         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11943                 struct nlattr *pat;
11944                 int n_patterns = 0;
11945                 int rem, pat_len, mask_len, pkt_offset;
11946                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11947
11948                 regular = true;
11949
11950                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11951                                     rem)
11952                         n_patterns++;
11953                 if (n_patterns > wowlan->n_patterns)
11954                         return -EINVAL;
11955
11956                 new_triggers.patterns = kcalloc(n_patterns,
11957                                                 sizeof(new_triggers.patterns[0]),
11958                                                 GFP_KERNEL);
11959                 if (!new_triggers.patterns)
11960                         return -ENOMEM;
11961
11962                 new_triggers.n_patterns = n_patterns;
11963                 i = 0;
11964
11965                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11966                                     rem) {
11967                         u8 *mask_pat;
11968
11969                         err = nla_parse_nested_deprecated(pat_tb,
11970                                                           MAX_NL80211_PKTPAT,
11971                                                           pat,
11972                                                           nl80211_packet_pattern_policy,
11973                                                           info->extack);
11974                         if (err)
11975                                 goto error;
11976
11977                         err = -EINVAL;
11978                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11979                             !pat_tb[NL80211_PKTPAT_PATTERN])
11980                                 goto error;
11981                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11982                         mask_len = DIV_ROUND_UP(pat_len, 8);
11983                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11984                                 goto error;
11985                         if (pat_len > wowlan->pattern_max_len ||
11986                             pat_len < wowlan->pattern_min_len)
11987                                 goto error;
11988
11989                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11990                                 pkt_offset = 0;
11991                         else
11992                                 pkt_offset = nla_get_u32(
11993                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11994                         if (pkt_offset > wowlan->max_pkt_offset)
11995                                 goto error;
11996                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11997
11998                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11999                         if (!mask_pat) {
12000                                 err = -ENOMEM;
12001                                 goto error;
12002                         }
12003                         new_triggers.patterns[i].mask = mask_pat;
12004                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12005                                mask_len);
12006                         mask_pat += mask_len;
12007                         new_triggers.patterns[i].pattern = mask_pat;
12008                         new_triggers.patterns[i].pattern_len = pat_len;
12009                         memcpy(mask_pat,
12010                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12011                                pat_len);
12012                         i++;
12013                 }
12014         }
12015
12016         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12017                 regular = true;
12018                 err = nl80211_parse_wowlan_tcp(
12019                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12020                         &new_triggers);
12021                 if (err)
12022                         goto error;
12023         }
12024
12025         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12026                 regular = true;
12027                 err = nl80211_parse_wowlan_nd(
12028                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12029                         &new_triggers);
12030                 if (err)
12031                         goto error;
12032         }
12033
12034         /* The 'any' trigger means the device continues operating more or less
12035          * as in its normal operation mode and wakes up the host on most of the
12036          * normal interrupts (like packet RX, ...)
12037          * It therefore makes little sense to combine with the more constrained
12038          * wakeup trigger modes.
12039          */
12040         if (new_triggers.any && regular) {
12041                 err = -EINVAL;
12042                 goto error;
12043         }
12044
12045         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12046         if (!ntrig) {
12047                 err = -ENOMEM;
12048                 goto error;
12049         }
12050         cfg80211_rdev_free_wowlan(rdev);
12051         rdev->wiphy.wowlan_config = ntrig;
12052
12053  set_wakeup:
12054         if (rdev->ops->set_wakeup &&
12055             prev_enabled != !!rdev->wiphy.wowlan_config)
12056                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12057
12058         return 0;
12059  error:
12060         for (i = 0; i < new_triggers.n_patterns; i++)
12061                 kfree(new_triggers.patterns[i].mask);
12062         kfree(new_triggers.patterns);
12063         if (new_triggers.tcp && new_triggers.tcp->sock)
12064                 sock_release(new_triggers.tcp->sock);
12065         kfree(new_triggers.tcp);
12066         kfree(new_triggers.nd_config);
12067         return err;
12068 }
12069 #endif
12070
12071 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12072                                        struct cfg80211_registered_device *rdev)
12073 {
12074         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12075         int i, j, pat_len;
12076         struct cfg80211_coalesce_rules *rule;
12077
12078         if (!rdev->coalesce->n_rules)
12079                 return 0;
12080
12081         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12082         if (!nl_rules)
12083                 return -ENOBUFS;
12084
12085         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12086                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12087                 if (!nl_rule)
12088                         return -ENOBUFS;
12089
12090                 rule = &rdev->coalesce->rules[i];
12091                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12092                                 rule->delay))
12093                         return -ENOBUFS;
12094
12095                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12096                                 rule->condition))
12097                         return -ENOBUFS;
12098
12099                 nl_pats = nla_nest_start_noflag(msg,
12100                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12101                 if (!nl_pats)
12102                         return -ENOBUFS;
12103
12104                 for (j = 0; j < rule->n_patterns; j++) {
12105                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12106                         if (!nl_pat)
12107                                 return -ENOBUFS;
12108                         pat_len = rule->patterns[j].pattern_len;
12109                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12110                                     DIV_ROUND_UP(pat_len, 8),
12111                                     rule->patterns[j].mask) ||
12112                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12113                                     rule->patterns[j].pattern) ||
12114                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12115                                         rule->patterns[j].pkt_offset))
12116                                 return -ENOBUFS;
12117                         nla_nest_end(msg, nl_pat);
12118                 }
12119                 nla_nest_end(msg, nl_pats);
12120                 nla_nest_end(msg, nl_rule);
12121         }
12122         nla_nest_end(msg, nl_rules);
12123
12124         return 0;
12125 }
12126
12127 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12128 {
12129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12130         struct sk_buff *msg;
12131         void *hdr;
12132
12133         if (!rdev->wiphy.coalesce)
12134                 return -EOPNOTSUPP;
12135
12136         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12137         if (!msg)
12138                 return -ENOMEM;
12139
12140         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12141                              NL80211_CMD_GET_COALESCE);
12142         if (!hdr)
12143                 goto nla_put_failure;
12144
12145         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12146                 goto nla_put_failure;
12147
12148         genlmsg_end(msg, hdr);
12149         return genlmsg_reply(msg, info);
12150
12151 nla_put_failure:
12152         nlmsg_free(msg);
12153         return -ENOBUFS;
12154 }
12155
12156 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12157 {
12158         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12159         int i, j;
12160         struct cfg80211_coalesce_rules *rule;
12161
12162         if (!coalesce)
12163                 return;
12164
12165         for (i = 0; i < coalesce->n_rules; i++) {
12166                 rule = &coalesce->rules[i];
12167                 for (j = 0; j < rule->n_patterns; j++)
12168                         kfree(rule->patterns[j].mask);
12169                 kfree(rule->patterns);
12170         }
12171         kfree(coalesce->rules);
12172         kfree(coalesce);
12173         rdev->coalesce = NULL;
12174 }
12175
12176 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12177                                        struct nlattr *rule,
12178                                        struct cfg80211_coalesce_rules *new_rule)
12179 {
12180         int err, i;
12181         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12182         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12183         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12184         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12185
12186         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12187                                           rule, nl80211_coalesce_policy, NULL);
12188         if (err)
12189                 return err;
12190
12191         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12192                 new_rule->delay =
12193                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12194         if (new_rule->delay > coalesce->max_delay)
12195                 return -EINVAL;
12196
12197         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12198                 new_rule->condition =
12199                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12200
12201         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12202                 return -EINVAL;
12203
12204         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12205                             rem)
12206                 n_patterns++;
12207         if (n_patterns > coalesce->n_patterns)
12208                 return -EINVAL;
12209
12210         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12211                                      GFP_KERNEL);
12212         if (!new_rule->patterns)
12213                 return -ENOMEM;
12214
12215         new_rule->n_patterns = n_patterns;
12216         i = 0;
12217
12218         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12219                             rem) {
12220                 u8 *mask_pat;
12221
12222                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12223                                                   pat,
12224                                                   nl80211_packet_pattern_policy,
12225                                                   NULL);
12226                 if (err)
12227                         return err;
12228
12229                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12230                     !pat_tb[NL80211_PKTPAT_PATTERN])
12231                         return -EINVAL;
12232                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12233                 mask_len = DIV_ROUND_UP(pat_len, 8);
12234                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12235                         return -EINVAL;
12236                 if (pat_len > coalesce->pattern_max_len ||
12237                     pat_len < coalesce->pattern_min_len)
12238                         return -EINVAL;
12239
12240                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12241                         pkt_offset = 0;
12242                 else
12243                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12244                 if (pkt_offset > coalesce->max_pkt_offset)
12245                         return -EINVAL;
12246                 new_rule->patterns[i].pkt_offset = pkt_offset;
12247
12248                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12249                 if (!mask_pat)
12250                         return -ENOMEM;
12251
12252                 new_rule->patterns[i].mask = mask_pat;
12253                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12254                        mask_len);
12255
12256                 mask_pat += mask_len;
12257                 new_rule->patterns[i].pattern = mask_pat;
12258                 new_rule->patterns[i].pattern_len = pat_len;
12259                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12260                        pat_len);
12261                 i++;
12262         }
12263
12264         return 0;
12265 }
12266
12267 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12268 {
12269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12270         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12271         struct cfg80211_coalesce new_coalesce = {};
12272         struct cfg80211_coalesce *n_coalesce;
12273         int err, rem_rule, n_rules = 0, i, j;
12274         struct nlattr *rule;
12275         struct cfg80211_coalesce_rules *tmp_rule;
12276
12277         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12278                 return -EOPNOTSUPP;
12279
12280         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12281                 cfg80211_rdev_free_coalesce(rdev);
12282                 rdev_set_coalesce(rdev, NULL);
12283                 return 0;
12284         }
12285
12286         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12287                             rem_rule)
12288                 n_rules++;
12289         if (n_rules > coalesce->n_rules)
12290                 return -EINVAL;
12291
12292         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12293                                      GFP_KERNEL);
12294         if (!new_coalesce.rules)
12295                 return -ENOMEM;
12296
12297         new_coalesce.n_rules = n_rules;
12298         i = 0;
12299
12300         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12301                             rem_rule) {
12302                 err = nl80211_parse_coalesce_rule(rdev, rule,
12303                                                   &new_coalesce.rules[i]);
12304                 if (err)
12305                         goto error;
12306
12307                 i++;
12308         }
12309
12310         err = rdev_set_coalesce(rdev, &new_coalesce);
12311         if (err)
12312                 goto error;
12313
12314         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12315         if (!n_coalesce) {
12316                 err = -ENOMEM;
12317                 goto error;
12318         }
12319         cfg80211_rdev_free_coalesce(rdev);
12320         rdev->coalesce = n_coalesce;
12321
12322         return 0;
12323 error:
12324         for (i = 0; i < new_coalesce.n_rules; i++) {
12325                 tmp_rule = &new_coalesce.rules[i];
12326                 for (j = 0; j < tmp_rule->n_patterns; j++)
12327                         kfree(tmp_rule->patterns[j].mask);
12328                 kfree(tmp_rule->patterns);
12329         }
12330         kfree(new_coalesce.rules);
12331
12332         return err;
12333 }
12334
12335 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12336 {
12337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12338         struct net_device *dev = info->user_ptr[1];
12339         struct wireless_dev *wdev = dev->ieee80211_ptr;
12340         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12341         struct cfg80211_gtk_rekey_data rekey_data;
12342         int err;
12343
12344         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12345                 return -EINVAL;
12346
12347         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12348                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12349                                           nl80211_rekey_policy, info->extack);
12350         if (err)
12351                 return err;
12352
12353         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12354             !tb[NL80211_REKEY_DATA_KCK])
12355                 return -EINVAL;
12356         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12357                 return -ERANGE;
12358         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12359             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12360               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12361                 return -ERANGE;
12362         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12363             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12364               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12365                 return -ERANGE;
12366
12367         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12368         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12369         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12370         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12371         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12372         if (tb[NL80211_REKEY_DATA_AKM])
12373                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12374
12375         wdev_lock(wdev);
12376         if (!wdev->current_bss) {
12377                 err = -ENOTCONN;
12378                 goto out;
12379         }
12380
12381         if (!rdev->ops->set_rekey_data) {
12382                 err = -EOPNOTSUPP;
12383                 goto out;
12384         }
12385
12386         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12387  out:
12388         wdev_unlock(wdev);
12389         return err;
12390 }
12391
12392 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12393                                              struct genl_info *info)
12394 {
12395         struct net_device *dev = info->user_ptr[1];
12396         struct wireless_dev *wdev = dev->ieee80211_ptr;
12397
12398         if (wdev->iftype != NL80211_IFTYPE_AP &&
12399             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12400                 return -EINVAL;
12401
12402         if (wdev->ap_unexpected_nlportid)
12403                 return -EBUSY;
12404
12405         wdev->ap_unexpected_nlportid = info->snd_portid;
12406         return 0;
12407 }
12408
12409 static int nl80211_probe_client(struct sk_buff *skb,
12410                                 struct genl_info *info)
12411 {
12412         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12413         struct net_device *dev = info->user_ptr[1];
12414         struct wireless_dev *wdev = dev->ieee80211_ptr;
12415         struct sk_buff *msg;
12416         void *hdr;
12417         const u8 *addr;
12418         u64 cookie;
12419         int err;
12420
12421         if (wdev->iftype != NL80211_IFTYPE_AP &&
12422             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12423                 return -EOPNOTSUPP;
12424
12425         if (!info->attrs[NL80211_ATTR_MAC])
12426                 return -EINVAL;
12427
12428         if (!rdev->ops->probe_client)
12429                 return -EOPNOTSUPP;
12430
12431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12432         if (!msg)
12433                 return -ENOMEM;
12434
12435         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12436                              NL80211_CMD_PROBE_CLIENT);
12437         if (!hdr) {
12438                 err = -ENOBUFS;
12439                 goto free_msg;
12440         }
12441
12442         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12443
12444         err = rdev_probe_client(rdev, dev, addr, &cookie);
12445         if (err)
12446                 goto free_msg;
12447
12448         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12449                               NL80211_ATTR_PAD))
12450                 goto nla_put_failure;
12451
12452         genlmsg_end(msg, hdr);
12453
12454         return genlmsg_reply(msg, info);
12455
12456  nla_put_failure:
12457         err = -ENOBUFS;
12458  free_msg:
12459         nlmsg_free(msg);
12460         return err;
12461 }
12462
12463 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12464 {
12465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12466         struct cfg80211_beacon_registration *reg, *nreg;
12467         int rv;
12468
12469         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12470                 return -EOPNOTSUPP;
12471
12472         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12473         if (!nreg)
12474                 return -ENOMEM;
12475
12476         /* First, check if already registered. */
12477         spin_lock_bh(&rdev->beacon_registrations_lock);
12478         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12479                 if (reg->nlportid == info->snd_portid) {
12480                         rv = -EALREADY;
12481                         goto out_err;
12482                 }
12483         }
12484         /* Add it to the list */
12485         nreg->nlportid = info->snd_portid;
12486         list_add(&nreg->list, &rdev->beacon_registrations);
12487
12488         spin_unlock_bh(&rdev->beacon_registrations_lock);
12489
12490         return 0;
12491 out_err:
12492         spin_unlock_bh(&rdev->beacon_registrations_lock);
12493         kfree(nreg);
12494         return rv;
12495 }
12496
12497 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12498 {
12499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12500         struct wireless_dev *wdev = info->user_ptr[1];
12501         int err;
12502
12503         if (!rdev->ops->start_p2p_device)
12504                 return -EOPNOTSUPP;
12505
12506         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12507                 return -EOPNOTSUPP;
12508
12509         if (wdev_running(wdev))
12510                 return 0;
12511
12512         if (rfkill_blocked(rdev->rfkill))
12513                 return -ERFKILL;
12514
12515         err = rdev_start_p2p_device(rdev, wdev);
12516         if (err)
12517                 return err;
12518
12519         wdev->is_running = true;
12520         rdev->opencount++;
12521
12522         return 0;
12523 }
12524
12525 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12526 {
12527         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12528         struct wireless_dev *wdev = info->user_ptr[1];
12529
12530         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12531                 return -EOPNOTSUPP;
12532
12533         if (!rdev->ops->stop_p2p_device)
12534                 return -EOPNOTSUPP;
12535
12536         cfg80211_stop_p2p_device(rdev, wdev);
12537
12538         return 0;
12539 }
12540
12541 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12542 {
12543         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12544         struct wireless_dev *wdev = info->user_ptr[1];
12545         struct cfg80211_nan_conf conf = {};
12546         int err;
12547
12548         if (wdev->iftype != NL80211_IFTYPE_NAN)
12549                 return -EOPNOTSUPP;
12550
12551         if (wdev_running(wdev))
12552                 return -EEXIST;
12553
12554         if (rfkill_blocked(rdev->rfkill))
12555                 return -ERFKILL;
12556
12557         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12558                 return -EINVAL;
12559
12560         conf.master_pref =
12561                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12562
12563         if (info->attrs[NL80211_ATTR_BANDS]) {
12564                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12565
12566                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12567                         return -EOPNOTSUPP;
12568
12569                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12570                         return -EINVAL;
12571
12572                 conf.bands = bands;
12573         }
12574
12575         err = rdev_start_nan(rdev, wdev, &conf);
12576         if (err)
12577                 return err;
12578
12579         wdev->is_running = true;
12580         rdev->opencount++;
12581
12582         return 0;
12583 }
12584
12585 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12586 {
12587         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12588         struct wireless_dev *wdev = info->user_ptr[1];
12589
12590         if (wdev->iftype != NL80211_IFTYPE_NAN)
12591                 return -EOPNOTSUPP;
12592
12593         cfg80211_stop_nan(rdev, wdev);
12594
12595         return 0;
12596 }
12597
12598 static int validate_nan_filter(struct nlattr *filter_attr)
12599 {
12600         struct nlattr *attr;
12601         int len = 0, n_entries = 0, rem;
12602
12603         nla_for_each_nested(attr, filter_attr, rem) {
12604                 len += nla_len(attr);
12605                 n_entries++;
12606         }
12607
12608         if (len >= U8_MAX)
12609                 return -EINVAL;
12610
12611         return n_entries;
12612 }
12613
12614 static int handle_nan_filter(struct nlattr *attr_filter,
12615                              struct cfg80211_nan_func *func,
12616                              bool tx)
12617 {
12618         struct nlattr *attr;
12619         int n_entries, rem, i;
12620         struct cfg80211_nan_func_filter *filter;
12621
12622         n_entries = validate_nan_filter(attr_filter);
12623         if (n_entries < 0)
12624                 return n_entries;
12625
12626         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12627
12628         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12629         if (!filter)
12630                 return -ENOMEM;
12631
12632         i = 0;
12633         nla_for_each_nested(attr, attr_filter, rem) {
12634                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12635                 filter[i].len = nla_len(attr);
12636                 i++;
12637         }
12638         if (tx) {
12639                 func->num_tx_filters = n_entries;
12640                 func->tx_filters = filter;
12641         } else {
12642                 func->num_rx_filters = n_entries;
12643                 func->rx_filters = filter;
12644         }
12645
12646         return 0;
12647 }
12648
12649 static int nl80211_nan_add_func(struct sk_buff *skb,
12650                                 struct genl_info *info)
12651 {
12652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12653         struct wireless_dev *wdev = info->user_ptr[1];
12654         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12655         struct cfg80211_nan_func *func;
12656         struct sk_buff *msg = NULL;
12657         void *hdr = NULL;
12658         int err = 0;
12659
12660         if (wdev->iftype != NL80211_IFTYPE_NAN)
12661                 return -EOPNOTSUPP;
12662
12663         if (!wdev_running(wdev))
12664                 return -ENOTCONN;
12665
12666         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12667                 return -EINVAL;
12668
12669         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12670                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12671                                           nl80211_nan_func_policy,
12672                                           info->extack);
12673         if (err)
12674                 return err;
12675
12676         func = kzalloc(sizeof(*func), GFP_KERNEL);
12677         if (!func)
12678                 return -ENOMEM;
12679
12680         func->cookie = cfg80211_assign_cookie(rdev);
12681
12682         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12683             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12684                 err = -EINVAL;
12685                 goto out;
12686         }
12687
12688
12689         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12690
12691         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12692                 err = -EINVAL;
12693                 goto out;
12694         }
12695
12696         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12697                sizeof(func->service_id));
12698
12699         func->close_range =
12700                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12701
12702         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12703                 func->serv_spec_info_len =
12704                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12705                 func->serv_spec_info =
12706                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12707                                 func->serv_spec_info_len,
12708                                 GFP_KERNEL);
12709                 if (!func->serv_spec_info) {
12710                         err = -ENOMEM;
12711                         goto out;
12712                 }
12713         }
12714
12715         if (tb[NL80211_NAN_FUNC_TTL])
12716                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12717
12718         switch (func->type) {
12719         case NL80211_NAN_FUNC_PUBLISH:
12720                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12721                         err = -EINVAL;
12722                         goto out;
12723                 }
12724
12725                 func->publish_type =
12726                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12727                 func->publish_bcast =
12728                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12729
12730                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12731                         func->publish_bcast) {
12732                         err = -EINVAL;
12733                         goto out;
12734                 }
12735                 break;
12736         case NL80211_NAN_FUNC_SUBSCRIBE:
12737                 func->subscribe_active =
12738                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12739                 break;
12740         case NL80211_NAN_FUNC_FOLLOW_UP:
12741                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12742                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12743                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12744                         err = -EINVAL;
12745                         goto out;
12746                 }
12747
12748                 func->followup_id =
12749                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12750                 func->followup_reqid =
12751                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12752                 memcpy(func->followup_dest.addr,
12753                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12754                        sizeof(func->followup_dest.addr));
12755                 if (func->ttl) {
12756                         err = -EINVAL;
12757                         goto out;
12758                 }
12759                 break;
12760         default:
12761                 err = -EINVAL;
12762                 goto out;
12763         }
12764
12765         if (tb[NL80211_NAN_FUNC_SRF]) {
12766                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12767
12768                 err = nla_parse_nested_deprecated(srf_tb,
12769                                                   NL80211_NAN_SRF_ATTR_MAX,
12770                                                   tb[NL80211_NAN_FUNC_SRF],
12771                                                   nl80211_nan_srf_policy,
12772                                                   info->extack);
12773                 if (err)
12774                         goto out;
12775
12776                 func->srf_include =
12777                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12778
12779                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12780                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12781                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12782                                 err = -EINVAL;
12783                                 goto out;
12784                         }
12785
12786                         func->srf_bf_len =
12787                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12788                         func->srf_bf =
12789                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12790                                         func->srf_bf_len, GFP_KERNEL);
12791                         if (!func->srf_bf) {
12792                                 err = -ENOMEM;
12793                                 goto out;
12794                         }
12795
12796                         func->srf_bf_idx =
12797                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12798                 } else {
12799                         struct nlattr *attr, *mac_attr =
12800                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12801                         int n_entries, rem, i = 0;
12802
12803                         if (!mac_attr) {
12804                                 err = -EINVAL;
12805                                 goto out;
12806                         }
12807
12808                         n_entries = validate_acl_mac_addrs(mac_attr);
12809                         if (n_entries <= 0) {
12810                                 err = -EINVAL;
12811                                 goto out;
12812                         }
12813
12814                         func->srf_num_macs = n_entries;
12815                         func->srf_macs =
12816                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12817                                         GFP_KERNEL);
12818                         if (!func->srf_macs) {
12819                                 err = -ENOMEM;
12820                                 goto out;
12821                         }
12822
12823                         nla_for_each_nested(attr, mac_attr, rem)
12824                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12825                                        sizeof(*func->srf_macs));
12826                 }
12827         }
12828
12829         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12830                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12831                                         func, true);
12832                 if (err)
12833                         goto out;
12834         }
12835
12836         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12837                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12838                                         func, false);
12839                 if (err)
12840                         goto out;
12841         }
12842
12843         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12844         if (!msg) {
12845                 err = -ENOMEM;
12846                 goto out;
12847         }
12848
12849         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12850                              NL80211_CMD_ADD_NAN_FUNCTION);
12851         /* This can't really happen - we just allocated 4KB */
12852         if (WARN_ON(!hdr)) {
12853                 err = -ENOMEM;
12854                 goto out;
12855         }
12856
12857         err = rdev_add_nan_func(rdev, wdev, func);
12858 out:
12859         if (err < 0) {
12860                 cfg80211_free_nan_func(func);
12861                 nlmsg_free(msg);
12862                 return err;
12863         }
12864
12865         /* propagate the instance id and cookie to userspace  */
12866         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12867                               NL80211_ATTR_PAD))
12868                 goto nla_put_failure;
12869
12870         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12871         if (!func_attr)
12872                 goto nla_put_failure;
12873
12874         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12875                        func->instance_id))
12876                 goto nla_put_failure;
12877
12878         nla_nest_end(msg, func_attr);
12879
12880         genlmsg_end(msg, hdr);
12881         return genlmsg_reply(msg, info);
12882
12883 nla_put_failure:
12884         nlmsg_free(msg);
12885         return -ENOBUFS;
12886 }
12887
12888 static int nl80211_nan_del_func(struct sk_buff *skb,
12889                                struct genl_info *info)
12890 {
12891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12892         struct wireless_dev *wdev = info->user_ptr[1];
12893         u64 cookie;
12894
12895         if (wdev->iftype != NL80211_IFTYPE_NAN)
12896                 return -EOPNOTSUPP;
12897
12898         if (!wdev_running(wdev))
12899                 return -ENOTCONN;
12900
12901         if (!info->attrs[NL80211_ATTR_COOKIE])
12902                 return -EINVAL;
12903
12904         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12905
12906         rdev_del_nan_func(rdev, wdev, cookie);
12907
12908         return 0;
12909 }
12910
12911 static int nl80211_nan_change_config(struct sk_buff *skb,
12912                                      struct genl_info *info)
12913 {
12914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12915         struct wireless_dev *wdev = info->user_ptr[1];
12916         struct cfg80211_nan_conf conf = {};
12917         u32 changed = 0;
12918
12919         if (wdev->iftype != NL80211_IFTYPE_NAN)
12920                 return -EOPNOTSUPP;
12921
12922         if (!wdev_running(wdev))
12923                 return -ENOTCONN;
12924
12925         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12926                 conf.master_pref =
12927                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12928                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12929                         return -EINVAL;
12930
12931                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12932         }
12933
12934         if (info->attrs[NL80211_ATTR_BANDS]) {
12935                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12936
12937                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12938                         return -EOPNOTSUPP;
12939
12940                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12941                         return -EINVAL;
12942
12943                 conf.bands = bands;
12944                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12945         }
12946
12947         if (!changed)
12948                 return -EINVAL;
12949
12950         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12951 }
12952
12953 void cfg80211_nan_match(struct wireless_dev *wdev,
12954                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12955 {
12956         struct wiphy *wiphy = wdev->wiphy;
12957         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12958         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12959         struct sk_buff *msg;
12960         void *hdr;
12961
12962         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12963                 return;
12964
12965         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12966         if (!msg)
12967                 return;
12968
12969         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12970         if (!hdr) {
12971                 nlmsg_free(msg);
12972                 return;
12973         }
12974
12975         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12976             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12977                                          wdev->netdev->ifindex)) ||
12978             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12979                               NL80211_ATTR_PAD))
12980                 goto nla_put_failure;
12981
12982         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12983                               NL80211_ATTR_PAD) ||
12984             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12985                 goto nla_put_failure;
12986
12987         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12988         if (!match_attr)
12989                 goto nla_put_failure;
12990
12991         local_func_attr = nla_nest_start_noflag(msg,
12992                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12993         if (!local_func_attr)
12994                 goto nla_put_failure;
12995
12996         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12997                 goto nla_put_failure;
12998
12999         nla_nest_end(msg, local_func_attr);
13000
13001         peer_func_attr = nla_nest_start_noflag(msg,
13002                                                NL80211_NAN_MATCH_FUNC_PEER);
13003         if (!peer_func_attr)
13004                 goto nla_put_failure;
13005
13006         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13007             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13008                 goto nla_put_failure;
13009
13010         if (match->info && match->info_len &&
13011             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13012                     match->info))
13013                 goto nla_put_failure;
13014
13015         nla_nest_end(msg, peer_func_attr);
13016         nla_nest_end(msg, match_attr);
13017         genlmsg_end(msg, hdr);
13018
13019         if (!wdev->owner_nlportid)
13020                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13021                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13022         else
13023                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13024                                 wdev->owner_nlportid);
13025
13026         return;
13027
13028 nla_put_failure:
13029         nlmsg_free(msg);
13030 }
13031 EXPORT_SYMBOL(cfg80211_nan_match);
13032
13033 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13034                                   u8 inst_id,
13035                                   enum nl80211_nan_func_term_reason reason,
13036                                   u64 cookie, gfp_t gfp)
13037 {
13038         struct wiphy *wiphy = wdev->wiphy;
13039         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13040         struct sk_buff *msg;
13041         struct nlattr *func_attr;
13042         void *hdr;
13043
13044         if (WARN_ON(!inst_id))
13045                 return;
13046
13047         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13048         if (!msg)
13049                 return;
13050
13051         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13052         if (!hdr) {
13053                 nlmsg_free(msg);
13054                 return;
13055         }
13056
13057         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13058             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13059                                          wdev->netdev->ifindex)) ||
13060             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13061                               NL80211_ATTR_PAD))
13062                 goto nla_put_failure;
13063
13064         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13065                               NL80211_ATTR_PAD))
13066                 goto nla_put_failure;
13067
13068         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13069         if (!func_attr)
13070                 goto nla_put_failure;
13071
13072         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13073             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13074                 goto nla_put_failure;
13075
13076         nla_nest_end(msg, func_attr);
13077         genlmsg_end(msg, hdr);
13078
13079         if (!wdev->owner_nlportid)
13080                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13081                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13082         else
13083                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13084                                 wdev->owner_nlportid);
13085
13086         return;
13087
13088 nla_put_failure:
13089         nlmsg_free(msg);
13090 }
13091 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13092
13093 static int nl80211_get_protocol_features(struct sk_buff *skb,
13094                                          struct genl_info *info)
13095 {
13096         void *hdr;
13097         struct sk_buff *msg;
13098
13099         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13100         if (!msg)
13101                 return -ENOMEM;
13102
13103         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13104                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13105         if (!hdr)
13106                 goto nla_put_failure;
13107
13108         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13109                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13110                 goto nla_put_failure;
13111
13112         genlmsg_end(msg, hdr);
13113         return genlmsg_reply(msg, info);
13114
13115  nla_put_failure:
13116         kfree_skb(msg);
13117         return -ENOBUFS;
13118 }
13119
13120 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13121 {
13122         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13123         struct cfg80211_update_ft_ies_params ft_params;
13124         struct net_device *dev = info->user_ptr[1];
13125
13126         if (!rdev->ops->update_ft_ies)
13127                 return -EOPNOTSUPP;
13128
13129         if (!info->attrs[NL80211_ATTR_MDID] ||
13130             !info->attrs[NL80211_ATTR_IE])
13131                 return -EINVAL;
13132
13133         memset(&ft_params, 0, sizeof(ft_params));
13134         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13135         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13136         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13137
13138         return rdev_update_ft_ies(rdev, dev, &ft_params);
13139 }
13140
13141 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13142                                        struct genl_info *info)
13143 {
13144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13145         struct wireless_dev *wdev = info->user_ptr[1];
13146         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13147         u16 duration;
13148         int ret;
13149
13150         if (!rdev->ops->crit_proto_start)
13151                 return -EOPNOTSUPP;
13152
13153         if (WARN_ON(!rdev->ops->crit_proto_stop))
13154                 return -EINVAL;
13155
13156         if (rdev->crit_proto_nlportid)
13157                 return -EBUSY;
13158
13159         /* determine protocol if provided */
13160         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13161                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13162
13163         if (proto >= NUM_NL80211_CRIT_PROTO)
13164                 return -EINVAL;
13165
13166         /* timeout must be provided */
13167         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13168                 return -EINVAL;
13169
13170         duration =
13171                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13172
13173         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13174                 return -ERANGE;
13175
13176         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13177         if (!ret)
13178                 rdev->crit_proto_nlportid = info->snd_portid;
13179
13180         return ret;
13181 }
13182
13183 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13184                                       struct genl_info *info)
13185 {
13186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13187         struct wireless_dev *wdev = info->user_ptr[1];
13188
13189         if (!rdev->ops->crit_proto_stop)
13190                 return -EOPNOTSUPP;
13191
13192         if (rdev->crit_proto_nlportid) {
13193                 rdev->crit_proto_nlportid = 0;
13194                 rdev_crit_proto_stop(rdev, wdev);
13195         }
13196         return 0;
13197 }
13198
13199 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13200                                        struct nlattr *attr,
13201                                        struct netlink_ext_ack *extack)
13202 {
13203         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13204                 if (attr->nla_type & NLA_F_NESTED) {
13205                         NL_SET_ERR_MSG_ATTR(extack, attr,
13206                                             "unexpected nested data");
13207                         return -EINVAL;
13208                 }
13209
13210                 return 0;
13211         }
13212
13213         if (!(attr->nla_type & NLA_F_NESTED)) {
13214                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13215                 return -EINVAL;
13216         }
13217
13218         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13219 }
13220
13221 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13222 {
13223         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13224         struct wireless_dev *wdev =
13225                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13226         int i, err;
13227         u32 vid, subcmd;
13228
13229         if (!rdev->wiphy.vendor_commands)
13230                 return -EOPNOTSUPP;
13231
13232         if (IS_ERR(wdev)) {
13233                 err = PTR_ERR(wdev);
13234                 if (err != -EINVAL)
13235                         return err;
13236                 wdev = NULL;
13237         } else if (wdev->wiphy != &rdev->wiphy) {
13238                 return -EINVAL;
13239         }
13240
13241         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13242             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13243                 return -EINVAL;
13244
13245         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13246         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13247         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13248                 const struct wiphy_vendor_command *vcmd;
13249                 void *data = NULL;
13250                 int len = 0;
13251
13252                 vcmd = &rdev->wiphy.vendor_commands[i];
13253
13254                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13255                         continue;
13256
13257                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13258                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13259                         if (!wdev)
13260                                 return -EINVAL;
13261                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13262                             !wdev->netdev)
13263                                 return -EINVAL;
13264
13265                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13266                                 if (!wdev_running(wdev))
13267                                         return -ENETDOWN;
13268                         }
13269
13270                         if (!vcmd->doit)
13271                                 return -EOPNOTSUPP;
13272                 } else {
13273                         wdev = NULL;
13274                 }
13275
13276                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13277                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13278                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13279
13280                         err = nl80211_vendor_check_policy(vcmd,
13281                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13282                                         info->extack);
13283                         if (err)
13284                                 return err;
13285                 }
13286
13287                 rdev->cur_cmd_info = info;
13288                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13289                 rdev->cur_cmd_info = NULL;
13290                 return err;
13291         }
13292
13293         return -EOPNOTSUPP;
13294 }
13295
13296 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13297                                        struct netlink_callback *cb,
13298                                        struct cfg80211_registered_device **rdev,
13299                                        struct wireless_dev **wdev)
13300 {
13301         struct nlattr **attrbuf;
13302         u32 vid, subcmd;
13303         unsigned int i;
13304         int vcmd_idx = -1;
13305         int err;
13306         void *data = NULL;
13307         unsigned int data_len = 0;
13308
13309         if (cb->args[0]) {
13310                 /* subtract the 1 again here */
13311                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13312                 struct wireless_dev *tmp;
13313
13314                 if (!wiphy)
13315                         return -ENODEV;
13316                 *rdev = wiphy_to_rdev(wiphy);
13317                 *wdev = NULL;
13318
13319                 if (cb->args[1]) {
13320                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13321                                 if (tmp->identifier == cb->args[1] - 1) {
13322                                         *wdev = tmp;
13323                                         break;
13324                                 }
13325                         }
13326                 }
13327
13328                 /* keep rtnl locked in successful case */
13329                 return 0;
13330         }
13331
13332         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13333         if (!attrbuf)
13334                 return -ENOMEM;
13335
13336         err = nlmsg_parse_deprecated(cb->nlh,
13337                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13338                                      attrbuf, nl80211_fam.maxattr,
13339                                      nl80211_policy, NULL);
13340         if (err)
13341                 goto out;
13342
13343         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13344             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13345                 err = -EINVAL;
13346                 goto out;
13347         }
13348
13349         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13350         if (IS_ERR(*wdev))
13351                 *wdev = NULL;
13352
13353         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13354         if (IS_ERR(*rdev)) {
13355                 err = PTR_ERR(*rdev);
13356                 goto out;
13357         }
13358
13359         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13360         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13361
13362         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13363                 const struct wiphy_vendor_command *vcmd;
13364
13365                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13366
13367                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13368                         continue;
13369
13370                 if (!vcmd->dumpit) {
13371                         err = -EOPNOTSUPP;
13372                         goto out;
13373                 }
13374
13375                 vcmd_idx = i;
13376                 break;
13377         }
13378
13379         if (vcmd_idx < 0) {
13380                 err = -EOPNOTSUPP;
13381                 goto out;
13382         }
13383
13384         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13385                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13386                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13387
13388                 err = nl80211_vendor_check_policy(
13389                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13390                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13391                                 cb->extack);
13392                 if (err)
13393                         goto out;
13394         }
13395
13396         /* 0 is the first index - add 1 to parse only once */
13397         cb->args[0] = (*rdev)->wiphy_idx + 1;
13398         /* add 1 to know if it was NULL */
13399         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13400         cb->args[2] = vcmd_idx;
13401         cb->args[3] = (unsigned long)data;
13402         cb->args[4] = data_len;
13403
13404         /* keep rtnl locked in successful case */
13405         err = 0;
13406 out:
13407         kfree(attrbuf);
13408         return err;
13409 }
13410
13411 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13412                                    struct netlink_callback *cb)
13413 {
13414         struct cfg80211_registered_device *rdev;
13415         struct wireless_dev *wdev;
13416         unsigned int vcmd_idx;
13417         const struct wiphy_vendor_command *vcmd;
13418         void *data;
13419         int data_len;
13420         int err;
13421         struct nlattr *vendor_data;
13422
13423         rtnl_lock();
13424         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13425         if (err)
13426                 goto out;
13427
13428         vcmd_idx = cb->args[2];
13429         data = (void *)cb->args[3];
13430         data_len = cb->args[4];
13431         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13432
13433         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13434                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13435                 if (!wdev) {
13436                         err = -EINVAL;
13437                         goto out;
13438                 }
13439                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13440                     !wdev->netdev) {
13441                         err = -EINVAL;
13442                         goto out;
13443                 }
13444
13445                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13446                         if (!wdev_running(wdev)) {
13447                                 err = -ENETDOWN;
13448                                 goto out;
13449                         }
13450                 }
13451         }
13452
13453         while (1) {
13454                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13455                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13456                                            NL80211_CMD_VENDOR);
13457                 if (!hdr)
13458                         break;
13459
13460                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13461                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13462                                                wdev_id(wdev),
13463                                                NL80211_ATTR_PAD))) {
13464                         genlmsg_cancel(skb, hdr);
13465                         break;
13466                 }
13467
13468                 vendor_data = nla_nest_start_noflag(skb,
13469                                                     NL80211_ATTR_VENDOR_DATA);
13470                 if (!vendor_data) {
13471                         genlmsg_cancel(skb, hdr);
13472                         break;
13473                 }
13474
13475                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13476                                    (unsigned long *)&cb->args[5]);
13477                 nla_nest_end(skb, vendor_data);
13478
13479                 if (err == -ENOBUFS || err == -ENOENT) {
13480                         genlmsg_cancel(skb, hdr);
13481                         break;
13482                 } else if (err) {
13483                         genlmsg_cancel(skb, hdr);
13484                         goto out;
13485                 }
13486
13487                 genlmsg_end(skb, hdr);
13488         }
13489
13490         err = skb->len;
13491  out:
13492         rtnl_unlock();
13493         return err;
13494 }
13495
13496 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13497                                            enum nl80211_commands cmd,
13498                                            enum nl80211_attrs attr,
13499                                            int approxlen)
13500 {
13501         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13502
13503         if (WARN_ON(!rdev->cur_cmd_info))
13504                 return NULL;
13505
13506         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13507                                            rdev->cur_cmd_info->snd_portid,
13508                                            rdev->cur_cmd_info->snd_seq,
13509                                            cmd, attr, NULL, GFP_KERNEL);
13510 }
13511 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13512
13513 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13514 {
13515         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13516         void *hdr = ((void **)skb->cb)[1];
13517         struct nlattr *data = ((void **)skb->cb)[2];
13518
13519         /* clear CB data for netlink core to own from now on */
13520         memset(skb->cb, 0, sizeof(skb->cb));
13521
13522         if (WARN_ON(!rdev->cur_cmd_info)) {
13523                 kfree_skb(skb);
13524                 return -EINVAL;
13525         }
13526
13527         nla_nest_end(skb, data);
13528         genlmsg_end(skb, hdr);
13529         return genlmsg_reply(skb, rdev->cur_cmd_info);
13530 }
13531 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13532
13533 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13534 {
13535         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13536
13537         if (WARN_ON(!rdev->cur_cmd_info))
13538                 return 0;
13539
13540         return rdev->cur_cmd_info->snd_portid;
13541 }
13542 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13543
13544 static int nl80211_set_qos_map(struct sk_buff *skb,
13545                                struct genl_info *info)
13546 {
13547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13548         struct cfg80211_qos_map *qos_map = NULL;
13549         struct net_device *dev = info->user_ptr[1];
13550         u8 *pos, len, num_des, des_len, des;
13551         int ret;
13552
13553         if (!rdev->ops->set_qos_map)
13554                 return -EOPNOTSUPP;
13555
13556         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13557                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13558                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13559
13560                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13561                     len > IEEE80211_QOS_MAP_LEN_MAX)
13562                         return -EINVAL;
13563
13564                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13565                 if (!qos_map)
13566                         return -ENOMEM;
13567
13568                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13569                 if (num_des) {
13570                         des_len = num_des *
13571                                 sizeof(struct cfg80211_dscp_exception);
13572                         memcpy(qos_map->dscp_exception, pos, des_len);
13573                         qos_map->num_des = num_des;
13574                         for (des = 0; des < num_des; des++) {
13575                                 if (qos_map->dscp_exception[des].up > 7) {
13576                                         kfree(qos_map);
13577                                         return -EINVAL;
13578                                 }
13579                         }
13580                         pos += des_len;
13581                 }
13582                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13583         }
13584
13585         wdev_lock(dev->ieee80211_ptr);
13586         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13587         if (!ret)
13588                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13589         wdev_unlock(dev->ieee80211_ptr);
13590
13591         kfree(qos_map);
13592         return ret;
13593 }
13594
13595 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13596 {
13597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13598         struct net_device *dev = info->user_ptr[1];
13599         struct wireless_dev *wdev = dev->ieee80211_ptr;
13600         const u8 *peer;
13601         u8 tsid, up;
13602         u16 admitted_time = 0;
13603         int err;
13604
13605         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13606                 return -EOPNOTSUPP;
13607
13608         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13609             !info->attrs[NL80211_ATTR_USER_PRIO])
13610                 return -EINVAL;
13611
13612         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13613         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13614
13615         /* WMM uses TIDs 0-7 even for TSPEC */
13616         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13617                 /* TODO: handle 802.11 TSPEC/admission control
13618                  * need more attributes for that (e.g. BA session requirement);
13619                  * change the WMM adminssion test above to allow both then
13620                  */
13621                 return -EINVAL;
13622         }
13623
13624         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13625
13626         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13627                 admitted_time =
13628                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13629                 if (!admitted_time)
13630                         return -EINVAL;
13631         }
13632
13633         wdev_lock(wdev);
13634         switch (wdev->iftype) {
13635         case NL80211_IFTYPE_STATION:
13636         case NL80211_IFTYPE_P2P_CLIENT:
13637                 if (wdev->current_bss)
13638                         break;
13639                 err = -ENOTCONN;
13640                 goto out;
13641         default:
13642                 err = -EOPNOTSUPP;
13643                 goto out;
13644         }
13645
13646         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13647
13648  out:
13649         wdev_unlock(wdev);
13650         return err;
13651 }
13652
13653 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13654 {
13655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13656         struct net_device *dev = info->user_ptr[1];
13657         struct wireless_dev *wdev = dev->ieee80211_ptr;
13658         const u8 *peer;
13659         u8 tsid;
13660         int err;
13661
13662         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13663                 return -EINVAL;
13664
13665         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13666         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13667
13668         wdev_lock(wdev);
13669         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13670         wdev_unlock(wdev);
13671
13672         return err;
13673 }
13674
13675 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13676                                        struct genl_info *info)
13677 {
13678         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13679         struct net_device *dev = info->user_ptr[1];
13680         struct wireless_dev *wdev = dev->ieee80211_ptr;
13681         struct cfg80211_chan_def chandef = {};
13682         const u8 *addr;
13683         u8 oper_class;
13684         int err;
13685
13686         if (!rdev->ops->tdls_channel_switch ||
13687             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13688                 return -EOPNOTSUPP;
13689
13690         switch (dev->ieee80211_ptr->iftype) {
13691         case NL80211_IFTYPE_STATION:
13692         case NL80211_IFTYPE_P2P_CLIENT:
13693                 break;
13694         default:
13695                 return -EOPNOTSUPP;
13696         }
13697
13698         if (!info->attrs[NL80211_ATTR_MAC] ||
13699             !info->attrs[NL80211_ATTR_OPER_CLASS])
13700                 return -EINVAL;
13701
13702         err = nl80211_parse_chandef(rdev, info, &chandef);
13703         if (err)
13704                 return err;
13705
13706         /*
13707          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13708          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13709          * specification is not defined for them.
13710          */
13711         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13712             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13713             chandef.width != NL80211_CHAN_WIDTH_20)
13714                 return -EINVAL;
13715
13716         /* we will be active on the TDLS link */
13717         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13718                                            wdev->iftype))
13719                 return -EINVAL;
13720
13721         /* don't allow switching to DFS channels */
13722         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13723                 return -EINVAL;
13724
13725         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13726         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13727
13728         wdev_lock(wdev);
13729         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13730         wdev_unlock(wdev);
13731
13732         return err;
13733 }
13734
13735 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13736                                               struct genl_info *info)
13737 {
13738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13739         struct net_device *dev = info->user_ptr[1];
13740         struct wireless_dev *wdev = dev->ieee80211_ptr;
13741         const u8 *addr;
13742
13743         if (!rdev->ops->tdls_channel_switch ||
13744             !rdev->ops->tdls_cancel_channel_switch ||
13745             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13746                 return -EOPNOTSUPP;
13747
13748         switch (dev->ieee80211_ptr->iftype) {
13749         case NL80211_IFTYPE_STATION:
13750         case NL80211_IFTYPE_P2P_CLIENT:
13751                 break;
13752         default:
13753                 return -EOPNOTSUPP;
13754         }
13755
13756         if (!info->attrs[NL80211_ATTR_MAC])
13757                 return -EINVAL;
13758
13759         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13760
13761         wdev_lock(wdev);
13762         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13763         wdev_unlock(wdev);
13764
13765         return 0;
13766 }
13767
13768 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13769                                             struct genl_info *info)
13770 {
13771         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13772         struct net_device *dev = info->user_ptr[1];
13773         struct wireless_dev *wdev = dev->ieee80211_ptr;
13774         const struct nlattr *nla;
13775         bool enabled;
13776
13777         if (!rdev->ops->set_multicast_to_unicast)
13778                 return -EOPNOTSUPP;
13779
13780         if (wdev->iftype != NL80211_IFTYPE_AP &&
13781             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13782                 return -EOPNOTSUPP;
13783
13784         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13785         enabled = nla_get_flag(nla);
13786
13787         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13788 }
13789
13790 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13791 {
13792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13793         struct net_device *dev = info->user_ptr[1];
13794         struct wireless_dev *wdev = dev->ieee80211_ptr;
13795         struct cfg80211_pmk_conf pmk_conf = {};
13796         int ret;
13797
13798         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13799             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13800                 return -EOPNOTSUPP;
13801
13802         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13803                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13804                 return -EOPNOTSUPP;
13805
13806         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13807                 return -EINVAL;
13808
13809         wdev_lock(wdev);
13810         if (!wdev->current_bss) {
13811                 ret = -ENOTCONN;
13812                 goto out;
13813         }
13814
13815         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13816         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13817                 ret = -EINVAL;
13818                 goto out;
13819         }
13820
13821         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13822         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13823         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13824             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13825                 ret = -EINVAL;
13826                 goto out;
13827         }
13828
13829         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13830                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13831
13832                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13833                         ret = -EINVAL;
13834                         goto out;
13835                 }
13836
13837                 pmk_conf.pmk_r0_name =
13838                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13839         }
13840
13841         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13842 out:
13843         wdev_unlock(wdev);
13844         return ret;
13845 }
13846
13847 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13848 {
13849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13850         struct net_device *dev = info->user_ptr[1];
13851         struct wireless_dev *wdev = dev->ieee80211_ptr;
13852         const u8 *aa;
13853         int ret;
13854
13855         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13856             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13857                 return -EOPNOTSUPP;
13858
13859         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13860                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13861                 return -EOPNOTSUPP;
13862
13863         if (!info->attrs[NL80211_ATTR_MAC])
13864                 return -EINVAL;
13865
13866         wdev_lock(wdev);
13867         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13868         ret = rdev_del_pmk(rdev, dev, aa);
13869         wdev_unlock(wdev);
13870
13871         return ret;
13872 }
13873
13874 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13875 {
13876         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13877         struct net_device *dev = info->user_ptr[1];
13878         struct cfg80211_external_auth_params params;
13879
13880         if (!rdev->ops->external_auth)
13881                 return -EOPNOTSUPP;
13882
13883         if (!info->attrs[NL80211_ATTR_SSID] &&
13884             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13885             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13886                 return -EINVAL;
13887
13888         if (!info->attrs[NL80211_ATTR_BSSID])
13889                 return -EINVAL;
13890
13891         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13892                 return -EINVAL;
13893
13894         memset(&params, 0, sizeof(params));
13895
13896         if (info->attrs[NL80211_ATTR_SSID]) {
13897                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13898                 if (params.ssid.ssid_len == 0 ||
13899                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13900                         return -EINVAL;
13901                 memcpy(params.ssid.ssid,
13902                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13903                        params.ssid.ssid_len);
13904         }
13905
13906         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13907                ETH_ALEN);
13908
13909         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13910
13911         if (info->attrs[NL80211_ATTR_PMKID])
13912                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13913
13914         return rdev_external_auth(rdev, dev, &params);
13915 }
13916
13917 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13918 {
13919         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
13920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13921         struct net_device *dev = info->user_ptr[1];
13922         struct wireless_dev *wdev = dev->ieee80211_ptr;
13923         const u8 *buf;
13924         size_t len;
13925         u8 *dest;
13926         u16 proto;
13927         bool noencrypt;
13928         u64 cookie = 0;
13929         int err;
13930
13931         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13932                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13933                 return -EOPNOTSUPP;
13934
13935         if (!rdev->ops->tx_control_port)
13936                 return -EOPNOTSUPP;
13937
13938         if (!info->attrs[NL80211_ATTR_FRAME] ||
13939             !info->attrs[NL80211_ATTR_MAC] ||
13940             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13941                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13942                 return -EINVAL;
13943         }
13944
13945         wdev_lock(wdev);
13946
13947         switch (wdev->iftype) {
13948         case NL80211_IFTYPE_AP:
13949         case NL80211_IFTYPE_P2P_GO:
13950         case NL80211_IFTYPE_MESH_POINT:
13951                 break;
13952         case NL80211_IFTYPE_ADHOC:
13953         case NL80211_IFTYPE_STATION:
13954         case NL80211_IFTYPE_P2P_CLIENT:
13955                 if (wdev->current_bss)
13956                         break;
13957                 err = -ENOTCONN;
13958                 goto out;
13959         default:
13960                 err = -EOPNOTSUPP;
13961                 goto out;
13962         }
13963
13964         wdev_unlock(wdev);
13965
13966         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13967         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13968         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13969         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13970         noencrypt =
13971                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13972
13973         err = rdev_tx_control_port(rdev, dev, buf, len,
13974                                    dest, cpu_to_be16(proto), noencrypt,
13975                                    dont_wait_for_ack ? NULL : &cookie);
13976         if (!err && !dont_wait_for_ack)
13977                 nl_set_extack_cookie_u64(info->extack, cookie);
13978         return err;
13979  out:
13980         wdev_unlock(wdev);
13981         return err;
13982 }
13983
13984 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13985                                            struct genl_info *info)
13986 {
13987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13988         struct net_device *dev = info->user_ptr[1];
13989         struct wireless_dev *wdev = dev->ieee80211_ptr;
13990         struct cfg80211_ftm_responder_stats ftm_stats = {};
13991         struct sk_buff *msg;
13992         void *hdr;
13993         struct nlattr *ftm_stats_attr;
13994         int err;
13995
13996         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13997                 return -EOPNOTSUPP;
13998
13999         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14000         if (err)
14001                 return err;
14002
14003         if (!ftm_stats.filled)
14004                 return -ENODATA;
14005
14006         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14007         if (!msg)
14008                 return -ENOMEM;
14009
14010         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14011                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14012         if (!hdr)
14013                 goto nla_put_failure;
14014
14015         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14016                 goto nla_put_failure;
14017
14018         ftm_stats_attr = nla_nest_start_noflag(msg,
14019                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14020         if (!ftm_stats_attr)
14021                 goto nla_put_failure;
14022
14023 #define SET_FTM(field, name, type)                                       \
14024         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14025             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14026                              ftm_stats.field))                           \
14027                 goto nla_put_failure; } while (0)
14028 #define SET_FTM_U64(field, name)                                         \
14029         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14030             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14031                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14032                 goto nla_put_failure; } while (0)
14033
14034         SET_FTM(success_num, SUCCESS_NUM, u32);
14035         SET_FTM(partial_num, PARTIAL_NUM, u32);
14036         SET_FTM(failed_num, FAILED_NUM, u32);
14037         SET_FTM(asap_num, ASAP_NUM, u32);
14038         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14039         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14040         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14041         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14042         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14043 #undef SET_FTM
14044
14045         nla_nest_end(msg, ftm_stats_attr);
14046
14047         genlmsg_end(msg, hdr);
14048         return genlmsg_reply(msg, info);
14049
14050 nla_put_failure:
14051         nlmsg_free(msg);
14052         return -ENOBUFS;
14053 }
14054
14055 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14056 {
14057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14058         struct cfg80211_update_owe_info owe_info;
14059         struct net_device *dev = info->user_ptr[1];
14060
14061         if (!rdev->ops->update_owe_info)
14062                 return -EOPNOTSUPP;
14063
14064         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14065             !info->attrs[NL80211_ATTR_MAC])
14066                 return -EINVAL;
14067
14068         memset(&owe_info, 0, sizeof(owe_info));
14069         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14070         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14071
14072         if (info->attrs[NL80211_ATTR_IE]) {
14073                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14074                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14075         }
14076
14077         return rdev_update_owe_info(rdev, dev, &owe_info);
14078 }
14079
14080 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14081 {
14082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14083         struct net_device *dev = info->user_ptr[1];
14084         struct wireless_dev *wdev = dev->ieee80211_ptr;
14085         struct station_info sinfo = {};
14086         const u8 *buf;
14087         size_t len;
14088         u8 *dest;
14089         int err;
14090
14091         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14092                 return -EOPNOTSUPP;
14093
14094         if (!info->attrs[NL80211_ATTR_MAC] ||
14095             !info->attrs[NL80211_ATTR_FRAME]) {
14096                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14097                 return -EINVAL;
14098         }
14099
14100         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14101                 return -EOPNOTSUPP;
14102
14103         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14104         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14105         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14106
14107         if (len < sizeof(struct ethhdr))
14108                 return -EINVAL;
14109
14110         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14111             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14112                 return -EINVAL;
14113
14114         err = rdev_get_station(rdev, dev, dest, &sinfo);
14115         if (err)
14116                 return err;
14117
14118         cfg80211_sinfo_release_content(&sinfo);
14119
14120         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14121 }
14122
14123 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14124                           struct nlattr *attrs[], struct net_device *dev,
14125                           struct cfg80211_tid_cfg *tid_conf,
14126                           struct genl_info *info, const u8 *peer)
14127 {
14128         struct netlink_ext_ack *extack = info->extack;
14129         u64 mask;
14130         int err;
14131
14132         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14133                 return -EINVAL;
14134
14135         tid_conf->config_override =
14136                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14137         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14138
14139         if (tid_conf->config_override) {
14140                 if (rdev->ops->reset_tid_config) {
14141                         err = rdev_reset_tid_config(rdev, dev, peer,
14142                                                     tid_conf->tids);
14143                         if (err)
14144                                 return err;
14145                 } else {
14146                         return -EINVAL;
14147                 }
14148         }
14149
14150         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14151                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14152                 tid_conf->noack =
14153                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14154         }
14155
14156         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14157                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14158                 tid_conf->retry_short =
14159                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14160
14161                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14162                         return -EINVAL;
14163         }
14164
14165         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14166                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14167                 tid_conf->retry_long =
14168                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14169
14170                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14171                         return -EINVAL;
14172         }
14173
14174         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14175                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14176                 tid_conf->ampdu =
14177                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14178         }
14179
14180         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14181                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14182                 tid_conf->rtscts =
14183                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14184         }
14185
14186         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14187                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14188                 tid_conf->amsdu =
14189                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14190         }
14191
14192         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14193                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14194
14195                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14196
14197                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14198                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14199                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14200                                                     &tid_conf->txrate_mask);
14201                         if (err)
14202                                 return err;
14203
14204                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14205                 }
14206                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14207         }
14208
14209         if (peer)
14210                 mask = rdev->wiphy.tid_config_support.peer;
14211         else
14212                 mask = rdev->wiphy.tid_config_support.vif;
14213
14214         if (tid_conf->mask & ~mask) {
14215                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14216                 return -ENOTSUPP;
14217         }
14218
14219         return 0;
14220 }
14221
14222 static int nl80211_set_tid_config(struct sk_buff *skb,
14223                                   struct genl_info *info)
14224 {
14225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14226         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14227         struct net_device *dev = info->user_ptr[1];
14228         struct cfg80211_tid_config *tid_config;
14229         struct nlattr *tid;
14230         int conf_idx = 0, rem_conf;
14231         int ret = -EINVAL;
14232         u32 num_conf = 0;
14233
14234         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14235                 return -EINVAL;
14236
14237         if (!rdev->ops->set_tid_config)
14238                 return -EOPNOTSUPP;
14239
14240         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14241                             rem_conf)
14242                 num_conf++;
14243
14244         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14245                              GFP_KERNEL);
14246         if (!tid_config)
14247                 return -ENOMEM;
14248
14249         tid_config->n_tid_conf = num_conf;
14250
14251         if (info->attrs[NL80211_ATTR_MAC])
14252                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14253
14254         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14255                             rem_conf) {
14256                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14257                                        tid, NULL, NULL);
14258
14259                 if (ret)
14260                         goto bad_tid_conf;
14261
14262                 ret = parse_tid_conf(rdev, attrs, dev,
14263                                      &tid_config->tid_conf[conf_idx],
14264                                      info, tid_config->peer);
14265                 if (ret)
14266                         goto bad_tid_conf;
14267
14268                 conf_idx++;
14269         }
14270
14271         ret = rdev_set_tid_config(rdev, dev, tid_config);
14272
14273 bad_tid_conf:
14274         kfree(tid_config);
14275         return ret;
14276 }
14277
14278 #define NL80211_FLAG_NEED_WIPHY         0x01
14279 #define NL80211_FLAG_NEED_NETDEV        0x02
14280 #define NL80211_FLAG_NEED_RTNL          0x04
14281 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14282 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14283                                          NL80211_FLAG_CHECK_NETDEV_UP)
14284 #define NL80211_FLAG_NEED_WDEV          0x10
14285 /* If a netdev is associated, it must be UP, P2P must be started */
14286 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14287                                          NL80211_FLAG_CHECK_NETDEV_UP)
14288 #define NL80211_FLAG_CLEAR_SKB          0x20
14289
14290 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14291                             struct genl_info *info)
14292 {
14293         struct cfg80211_registered_device *rdev;
14294         struct wireless_dev *wdev;
14295         struct net_device *dev;
14296         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14297
14298         if (rtnl)
14299                 rtnl_lock();
14300
14301         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14302                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14303                 if (IS_ERR(rdev)) {
14304                         if (rtnl)
14305                                 rtnl_unlock();
14306                         return PTR_ERR(rdev);
14307                 }
14308                 info->user_ptr[0] = rdev;
14309         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14310                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14311                 ASSERT_RTNL();
14312
14313                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14314                                                   info->attrs);
14315                 if (IS_ERR(wdev)) {
14316                         if (rtnl)
14317                                 rtnl_unlock();
14318                         return PTR_ERR(wdev);
14319                 }
14320
14321                 dev = wdev->netdev;
14322                 rdev = wiphy_to_rdev(wdev->wiphy);
14323
14324                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14325                         if (!dev) {
14326                                 if (rtnl)
14327                                         rtnl_unlock();
14328                                 return -EINVAL;
14329                         }
14330
14331                         info->user_ptr[1] = dev;
14332                 } else {
14333                         info->user_ptr[1] = wdev;
14334                 }
14335
14336                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14337                     !wdev_running(wdev)) {
14338                         if (rtnl)
14339                                 rtnl_unlock();
14340                         return -ENETDOWN;
14341                 }
14342
14343                 if (dev)
14344                         dev_hold(dev);
14345
14346                 info->user_ptr[0] = rdev;
14347         }
14348
14349         return 0;
14350 }
14351
14352 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14353                               struct genl_info *info)
14354 {
14355         if (info->user_ptr[1]) {
14356                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14357                         struct wireless_dev *wdev = info->user_ptr[1];
14358
14359                         if (wdev->netdev)
14360                                 dev_put(wdev->netdev);
14361                 } else {
14362                         dev_put(info->user_ptr[1]);
14363                 }
14364         }
14365
14366         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14367                 rtnl_unlock();
14368
14369         /* If needed, clear the netlink message payload from the SKB
14370          * as it might contain key data that shouldn't stick around on
14371          * the heap after the SKB is freed. The netlink message header
14372          * is still needed for further processing, so leave it intact.
14373          */
14374         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14375                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14376
14377                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14378         }
14379 }
14380
14381 static const struct genl_ops nl80211_ops[] = {
14382         {
14383                 .cmd = NL80211_CMD_GET_WIPHY,
14384                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14385                 .doit = nl80211_get_wiphy,
14386                 .dumpit = nl80211_dump_wiphy,
14387                 .done = nl80211_dump_wiphy_done,
14388                 /* can be retrieved by unprivileged users */
14389                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14390                                   NL80211_FLAG_NEED_RTNL,
14391         },
14392         {
14393                 .cmd = NL80211_CMD_SET_WIPHY,
14394                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14395                 .doit = nl80211_set_wiphy,
14396                 .flags = GENL_UNS_ADMIN_PERM,
14397                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14398         },
14399         {
14400                 .cmd = NL80211_CMD_GET_INTERFACE,
14401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14402                 .doit = nl80211_get_interface,
14403                 .dumpit = nl80211_dump_interface,
14404                 /* can be retrieved by unprivileged users */
14405                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14406                                   NL80211_FLAG_NEED_RTNL,
14407         },
14408         {
14409                 .cmd = NL80211_CMD_SET_INTERFACE,
14410                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14411                 .doit = nl80211_set_interface,
14412                 .flags = GENL_UNS_ADMIN_PERM,
14413                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14414                                   NL80211_FLAG_NEED_RTNL,
14415         },
14416         {
14417                 .cmd = NL80211_CMD_NEW_INTERFACE,
14418                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14419                 .doit = nl80211_new_interface,
14420                 .flags = GENL_UNS_ADMIN_PERM,
14421                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14422                                   NL80211_FLAG_NEED_RTNL,
14423         },
14424         {
14425                 .cmd = NL80211_CMD_DEL_INTERFACE,
14426                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14427                 .doit = nl80211_del_interface,
14428                 .flags = GENL_UNS_ADMIN_PERM,
14429                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14430                                   NL80211_FLAG_NEED_RTNL,
14431         },
14432         {
14433                 .cmd = NL80211_CMD_GET_KEY,
14434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14435                 .doit = nl80211_get_key,
14436                 .flags = GENL_UNS_ADMIN_PERM,
14437                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14438                                   NL80211_FLAG_NEED_RTNL,
14439         },
14440         {
14441                 .cmd = NL80211_CMD_SET_KEY,
14442                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14443                 .doit = nl80211_set_key,
14444                 .flags = GENL_UNS_ADMIN_PERM,
14445                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14446                                   NL80211_FLAG_NEED_RTNL |
14447                                   NL80211_FLAG_CLEAR_SKB,
14448         },
14449         {
14450                 .cmd = NL80211_CMD_NEW_KEY,
14451                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14452                 .doit = nl80211_new_key,
14453                 .flags = GENL_UNS_ADMIN_PERM,
14454                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14455                                   NL80211_FLAG_NEED_RTNL |
14456                                   NL80211_FLAG_CLEAR_SKB,
14457         },
14458         {
14459                 .cmd = NL80211_CMD_DEL_KEY,
14460                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14461                 .doit = nl80211_del_key,
14462                 .flags = GENL_UNS_ADMIN_PERM,
14463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14464                                   NL80211_FLAG_NEED_RTNL,
14465         },
14466         {
14467                 .cmd = NL80211_CMD_SET_BEACON,
14468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14469                 .flags = GENL_UNS_ADMIN_PERM,
14470                 .doit = nl80211_set_beacon,
14471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14472                                   NL80211_FLAG_NEED_RTNL,
14473         },
14474         {
14475                 .cmd = NL80211_CMD_START_AP,
14476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14477                 .flags = GENL_UNS_ADMIN_PERM,
14478                 .doit = nl80211_start_ap,
14479                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14480                                   NL80211_FLAG_NEED_RTNL,
14481         },
14482         {
14483                 .cmd = NL80211_CMD_STOP_AP,
14484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14485                 .flags = GENL_UNS_ADMIN_PERM,
14486                 .doit = nl80211_stop_ap,
14487                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14488                                   NL80211_FLAG_NEED_RTNL,
14489         },
14490         {
14491                 .cmd = NL80211_CMD_GET_STATION,
14492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14493                 .doit = nl80211_get_station,
14494                 .dumpit = nl80211_dump_station,
14495                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14496                                   NL80211_FLAG_NEED_RTNL,
14497         },
14498         {
14499                 .cmd = NL80211_CMD_SET_STATION,
14500                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14501                 .doit = nl80211_set_station,
14502                 .flags = GENL_UNS_ADMIN_PERM,
14503                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14504                                   NL80211_FLAG_NEED_RTNL,
14505         },
14506         {
14507                 .cmd = NL80211_CMD_NEW_STATION,
14508                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14509                 .doit = nl80211_new_station,
14510                 .flags = GENL_UNS_ADMIN_PERM,
14511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14512                                   NL80211_FLAG_NEED_RTNL,
14513         },
14514         {
14515                 .cmd = NL80211_CMD_DEL_STATION,
14516                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14517                 .doit = nl80211_del_station,
14518                 .flags = GENL_UNS_ADMIN_PERM,
14519                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14520                                   NL80211_FLAG_NEED_RTNL,
14521         },
14522         {
14523                 .cmd = NL80211_CMD_GET_MPATH,
14524                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14525                 .doit = nl80211_get_mpath,
14526                 .dumpit = nl80211_dump_mpath,
14527                 .flags = GENL_UNS_ADMIN_PERM,
14528                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14529                                   NL80211_FLAG_NEED_RTNL,
14530         },
14531         {
14532                 .cmd = NL80211_CMD_GET_MPP,
14533                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14534                 .doit = nl80211_get_mpp,
14535                 .dumpit = nl80211_dump_mpp,
14536                 .flags = GENL_UNS_ADMIN_PERM,
14537                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14538                                   NL80211_FLAG_NEED_RTNL,
14539         },
14540         {
14541                 .cmd = NL80211_CMD_SET_MPATH,
14542                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14543                 .doit = nl80211_set_mpath,
14544                 .flags = GENL_UNS_ADMIN_PERM,
14545                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14546                                   NL80211_FLAG_NEED_RTNL,
14547         },
14548         {
14549                 .cmd = NL80211_CMD_NEW_MPATH,
14550                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14551                 .doit = nl80211_new_mpath,
14552                 .flags = GENL_UNS_ADMIN_PERM,
14553                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14554                                   NL80211_FLAG_NEED_RTNL,
14555         },
14556         {
14557                 .cmd = NL80211_CMD_DEL_MPATH,
14558                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14559                 .doit = nl80211_del_mpath,
14560                 .flags = GENL_UNS_ADMIN_PERM,
14561                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14562                                   NL80211_FLAG_NEED_RTNL,
14563         },
14564         {
14565                 .cmd = NL80211_CMD_SET_BSS,
14566                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14567                 .doit = nl80211_set_bss,
14568                 .flags = GENL_UNS_ADMIN_PERM,
14569                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14570                                   NL80211_FLAG_NEED_RTNL,
14571         },
14572         {
14573                 .cmd = NL80211_CMD_GET_REG,
14574                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14575                 .doit = nl80211_get_reg_do,
14576                 .dumpit = nl80211_get_reg_dump,
14577                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14578                 /* can be retrieved by unprivileged users */
14579         },
14580 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14581         {
14582                 .cmd = NL80211_CMD_SET_REG,
14583                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14584                 .doit = nl80211_set_reg,
14585                 .flags = GENL_ADMIN_PERM,
14586                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14587         },
14588 #endif
14589         {
14590                 .cmd = NL80211_CMD_REQ_SET_REG,
14591                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14592                 .doit = nl80211_req_set_reg,
14593                 .flags = GENL_ADMIN_PERM,
14594         },
14595         {
14596                 .cmd = NL80211_CMD_RELOAD_REGDB,
14597                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14598                 .doit = nl80211_reload_regdb,
14599                 .flags = GENL_ADMIN_PERM,
14600         },
14601         {
14602                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14603                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14604                 .doit = nl80211_get_mesh_config,
14605                 /* can be retrieved by unprivileged users */
14606                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14607                                   NL80211_FLAG_NEED_RTNL,
14608         },
14609         {
14610                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14611                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14612                 .doit = nl80211_update_mesh_config,
14613                 .flags = GENL_UNS_ADMIN_PERM,
14614                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14615                                   NL80211_FLAG_NEED_RTNL,
14616         },
14617         {
14618                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14619                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14620                 .doit = nl80211_trigger_scan,
14621                 .flags = GENL_UNS_ADMIN_PERM,
14622                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14623                                   NL80211_FLAG_NEED_RTNL,
14624         },
14625         {
14626                 .cmd = NL80211_CMD_ABORT_SCAN,
14627                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14628                 .doit = nl80211_abort_scan,
14629                 .flags = GENL_UNS_ADMIN_PERM,
14630                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14631                                   NL80211_FLAG_NEED_RTNL,
14632         },
14633         {
14634                 .cmd = NL80211_CMD_GET_SCAN,
14635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14636                 .dumpit = nl80211_dump_scan,
14637         },
14638         {
14639                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14640                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14641                 .doit = nl80211_start_sched_scan,
14642                 .flags = GENL_UNS_ADMIN_PERM,
14643                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14644                                   NL80211_FLAG_NEED_RTNL,
14645         },
14646         {
14647                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14648                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14649                 .doit = nl80211_stop_sched_scan,
14650                 .flags = GENL_UNS_ADMIN_PERM,
14651                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14652                                   NL80211_FLAG_NEED_RTNL,
14653         },
14654         {
14655                 .cmd = NL80211_CMD_AUTHENTICATE,
14656                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14657                 .doit = nl80211_authenticate,
14658                 .flags = GENL_UNS_ADMIN_PERM,
14659                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14660                                   NL80211_FLAG_NEED_RTNL |
14661                                   NL80211_FLAG_CLEAR_SKB,
14662         },
14663         {
14664                 .cmd = NL80211_CMD_ASSOCIATE,
14665                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14666                 .doit = nl80211_associate,
14667                 .flags = GENL_UNS_ADMIN_PERM,
14668                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14669                                   NL80211_FLAG_NEED_RTNL |
14670                                   NL80211_FLAG_CLEAR_SKB,
14671         },
14672         {
14673                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14674                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14675                 .doit = nl80211_deauthenticate,
14676                 .flags = GENL_UNS_ADMIN_PERM,
14677                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14678                                   NL80211_FLAG_NEED_RTNL,
14679         },
14680         {
14681                 .cmd = NL80211_CMD_DISASSOCIATE,
14682                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14683                 .doit = nl80211_disassociate,
14684                 .flags = GENL_UNS_ADMIN_PERM,
14685                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14686                                   NL80211_FLAG_NEED_RTNL,
14687         },
14688         {
14689                 .cmd = NL80211_CMD_JOIN_IBSS,
14690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14691                 .doit = nl80211_join_ibss,
14692                 .flags = GENL_UNS_ADMIN_PERM,
14693                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14694                                   NL80211_FLAG_NEED_RTNL,
14695         },
14696         {
14697                 .cmd = NL80211_CMD_LEAVE_IBSS,
14698                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14699                 .doit = nl80211_leave_ibss,
14700                 .flags = GENL_UNS_ADMIN_PERM,
14701                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14702                                   NL80211_FLAG_NEED_RTNL,
14703         },
14704 #ifdef CONFIG_NL80211_TESTMODE
14705         {
14706                 .cmd = NL80211_CMD_TESTMODE,
14707                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14708                 .doit = nl80211_testmode_do,
14709                 .dumpit = nl80211_testmode_dump,
14710                 .flags = GENL_UNS_ADMIN_PERM,
14711                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14712                                   NL80211_FLAG_NEED_RTNL,
14713         },
14714 #endif
14715         {
14716                 .cmd = NL80211_CMD_CONNECT,
14717                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14718                 .doit = nl80211_connect,
14719                 .flags = GENL_UNS_ADMIN_PERM,
14720                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14721                                   NL80211_FLAG_NEED_RTNL |
14722                                   NL80211_FLAG_CLEAR_SKB,
14723         },
14724         {
14725                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14726                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14727                 .doit = nl80211_update_connect_params,
14728                 .flags = GENL_ADMIN_PERM,
14729                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14730                                   NL80211_FLAG_NEED_RTNL |
14731                                   NL80211_FLAG_CLEAR_SKB,
14732         },
14733         {
14734                 .cmd = NL80211_CMD_DISCONNECT,
14735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14736                 .doit = nl80211_disconnect,
14737                 .flags = GENL_UNS_ADMIN_PERM,
14738                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14739                                   NL80211_FLAG_NEED_RTNL,
14740         },
14741         {
14742                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14744                 .doit = nl80211_wiphy_netns,
14745                 .flags = GENL_UNS_ADMIN_PERM,
14746                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14747                                   NL80211_FLAG_NEED_RTNL,
14748         },
14749         {
14750                 .cmd = NL80211_CMD_GET_SURVEY,
14751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14752                 .dumpit = nl80211_dump_survey,
14753         },
14754         {
14755                 .cmd = NL80211_CMD_SET_PMKSA,
14756                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14757                 .doit = nl80211_setdel_pmksa,
14758                 .flags = GENL_UNS_ADMIN_PERM,
14759                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14760                                   NL80211_FLAG_NEED_RTNL |
14761                                   NL80211_FLAG_CLEAR_SKB,
14762         },
14763         {
14764                 .cmd = NL80211_CMD_DEL_PMKSA,
14765                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14766                 .doit = nl80211_setdel_pmksa,
14767                 .flags = GENL_UNS_ADMIN_PERM,
14768                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14769                                   NL80211_FLAG_NEED_RTNL,
14770         },
14771         {
14772                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14773                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14774                 .doit = nl80211_flush_pmksa,
14775                 .flags = GENL_UNS_ADMIN_PERM,
14776                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14777                                   NL80211_FLAG_NEED_RTNL,
14778         },
14779         {
14780                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14782                 .doit = nl80211_remain_on_channel,
14783                 .flags = GENL_UNS_ADMIN_PERM,
14784                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14785                                   NL80211_FLAG_NEED_RTNL,
14786         },
14787         {
14788                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14789                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14790                 .doit = nl80211_cancel_remain_on_channel,
14791                 .flags = GENL_UNS_ADMIN_PERM,
14792                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14793                                   NL80211_FLAG_NEED_RTNL,
14794         },
14795         {
14796                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14797                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14798                 .doit = nl80211_set_tx_bitrate_mask,
14799                 .flags = GENL_UNS_ADMIN_PERM,
14800                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14801                                   NL80211_FLAG_NEED_RTNL,
14802         },
14803         {
14804                 .cmd = NL80211_CMD_REGISTER_FRAME,
14805                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14806                 .doit = nl80211_register_mgmt,
14807                 .flags = GENL_UNS_ADMIN_PERM,
14808                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14809                                   NL80211_FLAG_NEED_RTNL,
14810         },
14811         {
14812                 .cmd = NL80211_CMD_FRAME,
14813                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14814                 .doit = nl80211_tx_mgmt,
14815                 .flags = GENL_UNS_ADMIN_PERM,
14816                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14817                                   NL80211_FLAG_NEED_RTNL,
14818         },
14819         {
14820                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14821                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14822                 .doit = nl80211_tx_mgmt_cancel_wait,
14823                 .flags = GENL_UNS_ADMIN_PERM,
14824                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14825                                   NL80211_FLAG_NEED_RTNL,
14826         },
14827         {
14828                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14829                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14830                 .doit = nl80211_set_power_save,
14831                 .flags = GENL_UNS_ADMIN_PERM,
14832                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14833                                   NL80211_FLAG_NEED_RTNL,
14834         },
14835         {
14836                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14837                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14838                 .doit = nl80211_get_power_save,
14839                 /* can be retrieved by unprivileged users */
14840                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14841                                   NL80211_FLAG_NEED_RTNL,
14842         },
14843         {
14844                 .cmd = NL80211_CMD_SET_CQM,
14845                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14846                 .doit = nl80211_set_cqm,
14847                 .flags = GENL_UNS_ADMIN_PERM,
14848                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14849                                   NL80211_FLAG_NEED_RTNL,
14850         },
14851         {
14852                 .cmd = NL80211_CMD_SET_CHANNEL,
14853                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14854                 .doit = nl80211_set_channel,
14855                 .flags = GENL_UNS_ADMIN_PERM,
14856                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14857                                   NL80211_FLAG_NEED_RTNL,
14858         },
14859         {
14860                 .cmd = NL80211_CMD_SET_WDS_PEER,
14861                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14862                 .doit = nl80211_set_wds_peer,
14863                 .flags = GENL_UNS_ADMIN_PERM,
14864                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14865                                   NL80211_FLAG_NEED_RTNL,
14866         },
14867         {
14868                 .cmd = NL80211_CMD_JOIN_MESH,
14869                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14870                 .doit = nl80211_join_mesh,
14871                 .flags = GENL_UNS_ADMIN_PERM,
14872                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14873                                   NL80211_FLAG_NEED_RTNL,
14874         },
14875         {
14876                 .cmd = NL80211_CMD_LEAVE_MESH,
14877                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14878                 .doit = nl80211_leave_mesh,
14879                 .flags = GENL_UNS_ADMIN_PERM,
14880                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14881                                   NL80211_FLAG_NEED_RTNL,
14882         },
14883         {
14884                 .cmd = NL80211_CMD_JOIN_OCB,
14885                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14886                 .doit = nl80211_join_ocb,
14887                 .flags = GENL_UNS_ADMIN_PERM,
14888                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14889                                   NL80211_FLAG_NEED_RTNL,
14890         },
14891         {
14892                 .cmd = NL80211_CMD_LEAVE_OCB,
14893                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14894                 .doit = nl80211_leave_ocb,
14895                 .flags = GENL_UNS_ADMIN_PERM,
14896                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14897                                   NL80211_FLAG_NEED_RTNL,
14898         },
14899 #ifdef CONFIG_PM
14900         {
14901                 .cmd = NL80211_CMD_GET_WOWLAN,
14902                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14903                 .doit = nl80211_get_wowlan,
14904                 /* can be retrieved by unprivileged users */
14905                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14906                                   NL80211_FLAG_NEED_RTNL,
14907         },
14908         {
14909                 .cmd = NL80211_CMD_SET_WOWLAN,
14910                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14911                 .doit = nl80211_set_wowlan,
14912                 .flags = GENL_UNS_ADMIN_PERM,
14913                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14914                                   NL80211_FLAG_NEED_RTNL,
14915         },
14916 #endif
14917         {
14918                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14920                 .doit = nl80211_set_rekey_data,
14921                 .flags = GENL_UNS_ADMIN_PERM,
14922                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14923                                   NL80211_FLAG_NEED_RTNL |
14924                                   NL80211_FLAG_CLEAR_SKB,
14925         },
14926         {
14927                 .cmd = NL80211_CMD_TDLS_MGMT,
14928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14929                 .doit = nl80211_tdls_mgmt,
14930                 .flags = GENL_UNS_ADMIN_PERM,
14931                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14932                                   NL80211_FLAG_NEED_RTNL,
14933         },
14934         {
14935                 .cmd = NL80211_CMD_TDLS_OPER,
14936                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14937                 .doit = nl80211_tdls_oper,
14938                 .flags = GENL_UNS_ADMIN_PERM,
14939                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14940                                   NL80211_FLAG_NEED_RTNL,
14941         },
14942         {
14943                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14944                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14945                 .doit = nl80211_register_unexpected_frame,
14946                 .flags = GENL_UNS_ADMIN_PERM,
14947                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14948                                   NL80211_FLAG_NEED_RTNL,
14949         },
14950         {
14951                 .cmd = NL80211_CMD_PROBE_CLIENT,
14952                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14953                 .doit = nl80211_probe_client,
14954                 .flags = GENL_UNS_ADMIN_PERM,
14955                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14956                                   NL80211_FLAG_NEED_RTNL,
14957         },
14958         {
14959                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14960                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14961                 .doit = nl80211_register_beacons,
14962                 .flags = GENL_UNS_ADMIN_PERM,
14963                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14964                                   NL80211_FLAG_NEED_RTNL,
14965         },
14966         {
14967                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14969                 .doit = nl80211_set_noack_map,
14970                 .flags = GENL_UNS_ADMIN_PERM,
14971                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14972                                   NL80211_FLAG_NEED_RTNL,
14973         },
14974         {
14975                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14977                 .doit = nl80211_start_p2p_device,
14978                 .flags = GENL_UNS_ADMIN_PERM,
14979                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14980                                   NL80211_FLAG_NEED_RTNL,
14981         },
14982         {
14983                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14985                 .doit = nl80211_stop_p2p_device,
14986                 .flags = GENL_UNS_ADMIN_PERM,
14987                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14988                                   NL80211_FLAG_NEED_RTNL,
14989         },
14990         {
14991                 .cmd = NL80211_CMD_START_NAN,
14992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993                 .doit = nl80211_start_nan,
14994                 .flags = GENL_ADMIN_PERM,
14995                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14996                                   NL80211_FLAG_NEED_RTNL,
14997         },
14998         {
14999                 .cmd = NL80211_CMD_STOP_NAN,
15000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001                 .doit = nl80211_stop_nan,
15002                 .flags = GENL_ADMIN_PERM,
15003                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15004                                   NL80211_FLAG_NEED_RTNL,
15005         },
15006         {
15007                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009                 .doit = nl80211_nan_add_func,
15010                 .flags = GENL_ADMIN_PERM,
15011                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15012                                   NL80211_FLAG_NEED_RTNL,
15013         },
15014         {
15015                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15017                 .doit = nl80211_nan_del_func,
15018                 .flags = GENL_ADMIN_PERM,
15019                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15020                                   NL80211_FLAG_NEED_RTNL,
15021         },
15022         {
15023                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15025                 .doit = nl80211_nan_change_config,
15026                 .flags = GENL_ADMIN_PERM,
15027                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15028                                   NL80211_FLAG_NEED_RTNL,
15029         },
15030         {
15031                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15033                 .doit = nl80211_set_mcast_rate,
15034                 .flags = GENL_UNS_ADMIN_PERM,
15035                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15036                                   NL80211_FLAG_NEED_RTNL,
15037         },
15038         {
15039                 .cmd = NL80211_CMD_SET_MAC_ACL,
15040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15041                 .doit = nl80211_set_mac_acl,
15042                 .flags = GENL_UNS_ADMIN_PERM,
15043                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15044                                   NL80211_FLAG_NEED_RTNL,
15045         },
15046         {
15047                 .cmd = NL80211_CMD_RADAR_DETECT,
15048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15049                 .doit = nl80211_start_radar_detection,
15050                 .flags = GENL_UNS_ADMIN_PERM,
15051                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15052                                   NL80211_FLAG_NEED_RTNL,
15053         },
15054         {
15055                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15056                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15057                 .doit = nl80211_get_protocol_features,
15058         },
15059         {
15060                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15062                 .doit = nl80211_update_ft_ies,
15063                 .flags = GENL_UNS_ADMIN_PERM,
15064                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15065                                   NL80211_FLAG_NEED_RTNL,
15066         },
15067         {
15068                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15070                 .doit = nl80211_crit_protocol_start,
15071                 .flags = GENL_UNS_ADMIN_PERM,
15072                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15073                                   NL80211_FLAG_NEED_RTNL,
15074         },
15075         {
15076                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15077                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15078                 .doit = nl80211_crit_protocol_stop,
15079                 .flags = GENL_UNS_ADMIN_PERM,
15080                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15081                                   NL80211_FLAG_NEED_RTNL,
15082         },
15083         {
15084                 .cmd = NL80211_CMD_GET_COALESCE,
15085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15086                 .doit = nl80211_get_coalesce,
15087                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15088                                   NL80211_FLAG_NEED_RTNL,
15089         },
15090         {
15091                 .cmd = NL80211_CMD_SET_COALESCE,
15092                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15093                 .doit = nl80211_set_coalesce,
15094                 .flags = GENL_UNS_ADMIN_PERM,
15095                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15096                                   NL80211_FLAG_NEED_RTNL,
15097         },
15098         {
15099                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15100                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15101                 .doit = nl80211_channel_switch,
15102                 .flags = GENL_UNS_ADMIN_PERM,
15103                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15104                                   NL80211_FLAG_NEED_RTNL,
15105         },
15106         {
15107                 .cmd = NL80211_CMD_VENDOR,
15108                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109                 .doit = nl80211_vendor_cmd,
15110                 .dumpit = nl80211_vendor_cmd_dump,
15111                 .flags = GENL_UNS_ADMIN_PERM,
15112                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15113                                   NL80211_FLAG_NEED_RTNL |
15114                                   NL80211_FLAG_CLEAR_SKB,
15115         },
15116         {
15117                 .cmd = NL80211_CMD_SET_QOS_MAP,
15118                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15119                 .doit = nl80211_set_qos_map,
15120                 .flags = GENL_UNS_ADMIN_PERM,
15121                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15122                                   NL80211_FLAG_NEED_RTNL,
15123         },
15124         {
15125                 .cmd = NL80211_CMD_ADD_TX_TS,
15126                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15127                 .doit = nl80211_add_tx_ts,
15128                 .flags = GENL_UNS_ADMIN_PERM,
15129                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15130                                   NL80211_FLAG_NEED_RTNL,
15131         },
15132         {
15133                 .cmd = NL80211_CMD_DEL_TX_TS,
15134                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15135                 .doit = nl80211_del_tx_ts,
15136                 .flags = GENL_UNS_ADMIN_PERM,
15137                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15138                                   NL80211_FLAG_NEED_RTNL,
15139         },
15140         {
15141                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15142                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15143                 .doit = nl80211_tdls_channel_switch,
15144                 .flags = GENL_UNS_ADMIN_PERM,
15145                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15146                                   NL80211_FLAG_NEED_RTNL,
15147         },
15148         {
15149                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15151                 .doit = nl80211_tdls_cancel_channel_switch,
15152                 .flags = GENL_UNS_ADMIN_PERM,
15153                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15154                                   NL80211_FLAG_NEED_RTNL,
15155         },
15156         {
15157                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15159                 .doit = nl80211_set_multicast_to_unicast,
15160                 .flags = GENL_UNS_ADMIN_PERM,
15161                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15162                                   NL80211_FLAG_NEED_RTNL,
15163         },
15164         {
15165                 .cmd = NL80211_CMD_SET_PMK,
15166                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15167                 .doit = nl80211_set_pmk,
15168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15169                                   NL80211_FLAG_NEED_RTNL |
15170                                   NL80211_FLAG_CLEAR_SKB,
15171         },
15172         {
15173                 .cmd = NL80211_CMD_DEL_PMK,
15174                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15175                 .doit = nl80211_del_pmk,
15176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15177                                   NL80211_FLAG_NEED_RTNL,
15178         },
15179         {
15180                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15181                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15182                 .doit = nl80211_external_auth,
15183                 .flags = GENL_ADMIN_PERM,
15184                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15185                                   NL80211_FLAG_NEED_RTNL,
15186         },
15187         {
15188                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15190                 .doit = nl80211_tx_control_port,
15191                 .flags = GENL_UNS_ADMIN_PERM,
15192                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15193                                   NL80211_FLAG_NEED_RTNL,
15194         },
15195         {
15196                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15197                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15198                 .doit = nl80211_get_ftm_responder_stats,
15199                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15200                                   NL80211_FLAG_NEED_RTNL,
15201         },
15202         {
15203                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15204                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15205                 .doit = nl80211_pmsr_start,
15206                 .flags = GENL_UNS_ADMIN_PERM,
15207                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15208                                   NL80211_FLAG_NEED_RTNL,
15209         },
15210         {
15211                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15212                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15213                 .doit = nl80211_notify_radar_detection,
15214                 .flags = GENL_UNS_ADMIN_PERM,
15215                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15216                                   NL80211_FLAG_NEED_RTNL,
15217         },
15218         {
15219                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15220                 .doit = nl80211_update_owe_info,
15221                 .flags = GENL_ADMIN_PERM,
15222                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15223                                   NL80211_FLAG_NEED_RTNL,
15224         },
15225         {
15226                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15227                 .doit = nl80211_probe_mesh_link,
15228                 .flags = GENL_UNS_ADMIN_PERM,
15229                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15230                                   NL80211_FLAG_NEED_RTNL,
15231         },
15232         {
15233                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15234                 .doit = nl80211_set_tid_config,
15235                 .flags = GENL_UNS_ADMIN_PERM,
15236                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15237                                   NL80211_FLAG_NEED_RTNL,
15238         },
15239 };
15240
15241 static struct genl_family nl80211_fam __ro_after_init = {
15242         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15243         .hdrsize = 0,                   /* no private header */
15244         .version = 1,                   /* no particular meaning now */
15245         .maxattr = NL80211_ATTR_MAX,
15246         .policy = nl80211_policy,
15247         .netnsok = true,
15248         .pre_doit = nl80211_pre_doit,
15249         .post_doit = nl80211_post_doit,
15250         .module = THIS_MODULE,
15251         .ops = nl80211_ops,
15252         .n_ops = ARRAY_SIZE(nl80211_ops),
15253         .mcgrps = nl80211_mcgrps,
15254         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15255         .parallel_ops = true,
15256 };
15257
15258 /* notification functions */
15259
15260 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15261                           enum nl80211_commands cmd)
15262 {
15263         struct sk_buff *msg;
15264         struct nl80211_dump_wiphy_state state = {};
15265
15266         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15267                 cmd != NL80211_CMD_DEL_WIPHY);
15268
15269         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15270         if (!msg)
15271                 return;
15272
15273         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15274                 nlmsg_free(msg);
15275                 return;
15276         }
15277
15278         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15279                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15280 }
15281
15282 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15283                                 struct wireless_dev *wdev,
15284                                 enum nl80211_commands cmd)
15285 {
15286         struct sk_buff *msg;
15287
15288         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15289         if (!msg)
15290                 return;
15291
15292         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15293                 nlmsg_free(msg);
15294                 return;
15295         }
15296
15297         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15298                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15299 }
15300
15301 static int nl80211_add_scan_req(struct sk_buff *msg,
15302                                 struct cfg80211_registered_device *rdev)
15303 {
15304         struct cfg80211_scan_request *req = rdev->scan_req;
15305         struct nlattr *nest;
15306         int i;
15307
15308         if (WARN_ON(!req))
15309                 return 0;
15310
15311         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15312         if (!nest)
15313                 goto nla_put_failure;
15314         for (i = 0; i < req->n_ssids; i++) {
15315                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15316                         goto nla_put_failure;
15317         }
15318         nla_nest_end(msg, nest);
15319
15320         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15321                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15322                 if (!nest)
15323                         goto nla_put_failure;
15324                 for (i = 0; i < req->n_channels; i++) {
15325                         if (nla_put_u32(msg, i,
15326                                    ieee80211_channel_to_khz(req->channels[i])))
15327                                 goto nla_put_failure;
15328                 }
15329                 nla_nest_end(msg, nest);
15330         } else {
15331                 nest = nla_nest_start_noflag(msg,
15332                                              NL80211_ATTR_SCAN_FREQUENCIES);
15333                 if (!nest)
15334                         goto nla_put_failure;
15335                 for (i = 0; i < req->n_channels; i++) {
15336                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15337                                 goto nla_put_failure;
15338                 }
15339                 nla_nest_end(msg, nest);
15340         }
15341
15342         if (req->ie &&
15343             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15344                 goto nla_put_failure;
15345
15346         if (req->flags &&
15347             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15348                 goto nla_put_failure;
15349
15350         if (req->info.scan_start_tsf &&
15351             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15352                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15353              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15354                      req->info.tsf_bssid)))
15355                 goto nla_put_failure;
15356
15357         return 0;
15358  nla_put_failure:
15359         return -ENOBUFS;
15360 }
15361
15362 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15363                                  struct cfg80211_registered_device *rdev,
15364                                  struct wireless_dev *wdev,
15365                                  u32 portid, u32 seq, int flags,
15366                                  u32 cmd)
15367 {
15368         void *hdr;
15369
15370         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15371         if (!hdr)
15372                 return -1;
15373
15374         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15375             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15376                                          wdev->netdev->ifindex)) ||
15377             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15378                               NL80211_ATTR_PAD))
15379                 goto nla_put_failure;
15380
15381         /* ignore errors and send incomplete event anyway */
15382         nl80211_add_scan_req(msg, rdev);
15383
15384         genlmsg_end(msg, hdr);
15385         return 0;
15386
15387  nla_put_failure:
15388         genlmsg_cancel(msg, hdr);
15389         return -EMSGSIZE;
15390 }
15391
15392 static int
15393 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15394                             struct cfg80211_sched_scan_request *req, u32 cmd)
15395 {
15396         void *hdr;
15397
15398         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15399         if (!hdr)
15400                 return -1;
15401
15402         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15403                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15404             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15405             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15406                               NL80211_ATTR_PAD))
15407                 goto nla_put_failure;
15408
15409         genlmsg_end(msg, hdr);
15410         return 0;
15411
15412  nla_put_failure:
15413         genlmsg_cancel(msg, hdr);
15414         return -EMSGSIZE;
15415 }
15416
15417 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15418                              struct wireless_dev *wdev)
15419 {
15420         struct sk_buff *msg;
15421
15422         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15423         if (!msg)
15424                 return;
15425
15426         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15427                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15428                 nlmsg_free(msg);
15429                 return;
15430         }
15431
15432         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15433                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15434 }
15435
15436 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15437                                        struct wireless_dev *wdev, bool aborted)
15438 {
15439         struct sk_buff *msg;
15440
15441         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15442         if (!msg)
15443                 return NULL;
15444
15445         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15446                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15447                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15448                 nlmsg_free(msg);
15449                 return NULL;
15450         }
15451
15452         return msg;
15453 }
15454
15455 /* send message created by nl80211_build_scan_msg() */
15456 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15457                            struct sk_buff *msg)
15458 {
15459         if (!msg)
15460                 return;
15461
15462         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15463                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15464 }
15465
15466 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15467 {
15468         struct sk_buff *msg;
15469
15470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15471         if (!msg)
15472                 return;
15473
15474         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15475                 nlmsg_free(msg);
15476                 return;
15477         }
15478
15479         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15480                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15481 }
15482
15483 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15484                                           struct regulatory_request *request)
15485 {
15486         /* Userspace can always count this one always being set */
15487         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15488                 goto nla_put_failure;
15489
15490         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15491                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15492                                NL80211_REGDOM_TYPE_WORLD))
15493                         goto nla_put_failure;
15494         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15495                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15496                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15497                         goto nla_put_failure;
15498         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15499                    request->intersect) {
15500                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15501                                NL80211_REGDOM_TYPE_INTERSECTION))
15502                         goto nla_put_failure;
15503         } else {
15504                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15505                                NL80211_REGDOM_TYPE_COUNTRY) ||
15506                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15507                                    request->alpha2))
15508                         goto nla_put_failure;
15509         }
15510
15511         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15512                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15513
15514                 if (wiphy &&
15515                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15516                         goto nla_put_failure;
15517
15518                 if (wiphy &&
15519                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15520                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15521                         goto nla_put_failure;
15522         }
15523
15524         return true;
15525
15526 nla_put_failure:
15527         return false;
15528 }
15529
15530 /*
15531  * This can happen on global regulatory changes or device specific settings
15532  * based on custom regulatory domains.
15533  */
15534 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15535                                      struct regulatory_request *request)
15536 {
15537         struct sk_buff *msg;
15538         void *hdr;
15539
15540         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15541         if (!msg)
15542                 return;
15543
15544         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15545         if (!hdr)
15546                 goto nla_put_failure;
15547
15548         if (!nl80211_reg_change_event_fill(msg, request))
15549                 goto nla_put_failure;
15550
15551         genlmsg_end(msg, hdr);
15552
15553         rcu_read_lock();
15554         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15555                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15556         rcu_read_unlock();
15557
15558         return;
15559
15560 nla_put_failure:
15561         nlmsg_free(msg);
15562 }
15563
15564 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15565                                     struct net_device *netdev,
15566                                     const u8 *buf, size_t len,
15567                                     enum nl80211_commands cmd, gfp_t gfp,
15568                                     int uapsd_queues, const u8 *req_ies,
15569                                     size_t req_ies_len)
15570 {
15571         struct sk_buff *msg;
15572         void *hdr;
15573
15574         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15575         if (!msg)
15576                 return;
15577
15578         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15579         if (!hdr) {
15580                 nlmsg_free(msg);
15581                 return;
15582         }
15583
15584         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15585             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15586             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15587             (req_ies &&
15588              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15589                 goto nla_put_failure;
15590
15591         if (uapsd_queues >= 0) {
15592                 struct nlattr *nla_wmm =
15593                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15594                 if (!nla_wmm)
15595                         goto nla_put_failure;
15596
15597                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15598                                uapsd_queues))
15599                         goto nla_put_failure;
15600
15601                 nla_nest_end(msg, nla_wmm);
15602         }
15603
15604         genlmsg_end(msg, hdr);
15605
15606         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15607                                 NL80211_MCGRP_MLME, gfp);
15608         return;
15609
15610  nla_put_failure:
15611         nlmsg_free(msg);
15612 }
15613
15614 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15615                           struct net_device *netdev, const u8 *buf,
15616                           size_t len, gfp_t gfp)
15617 {
15618         nl80211_send_mlme_event(rdev, netdev, buf, len,
15619                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15620 }
15621
15622 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15623                            struct net_device *netdev, const u8 *buf,
15624                            size_t len, gfp_t gfp, int uapsd_queues,
15625                            const u8 *req_ies, size_t req_ies_len)
15626 {
15627         nl80211_send_mlme_event(rdev, netdev, buf, len,
15628                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15629                                 req_ies, req_ies_len);
15630 }
15631
15632 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15633                          struct net_device *netdev, const u8 *buf,
15634                          size_t len, gfp_t gfp)
15635 {
15636         nl80211_send_mlme_event(rdev, netdev, buf, len,
15637                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15638 }
15639
15640 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15641                            struct net_device *netdev, const u8 *buf,
15642                            size_t len, gfp_t gfp)
15643 {
15644         nl80211_send_mlme_event(rdev, netdev, buf, len,
15645                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15646 }
15647
15648 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15649                                   size_t len)
15650 {
15651         struct wireless_dev *wdev = dev->ieee80211_ptr;
15652         struct wiphy *wiphy = wdev->wiphy;
15653         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15654         const struct ieee80211_mgmt *mgmt = (void *)buf;
15655         u32 cmd;
15656
15657         if (WARN_ON(len < 2))
15658                 return;
15659
15660         if (ieee80211_is_deauth(mgmt->frame_control)) {
15661                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15662         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15663                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15664         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15665                 if (wdev->unprot_beacon_reported &&
15666                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15667                         return;
15668                 cmd = NL80211_CMD_UNPROT_BEACON;
15669                 wdev->unprot_beacon_reported = jiffies;
15670         } else {
15671                 return;
15672         }
15673
15674         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15675         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15676                                 NULL, 0);
15677 }
15678 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15679
15680 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15681                                       struct net_device *netdev, int cmd,
15682                                       const u8 *addr, gfp_t gfp)
15683 {
15684         struct sk_buff *msg;
15685         void *hdr;
15686
15687         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15688         if (!msg)
15689                 return;
15690
15691         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15692         if (!hdr) {
15693                 nlmsg_free(msg);
15694                 return;
15695         }
15696
15697         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15698             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15699             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15700             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15701                 goto nla_put_failure;
15702
15703         genlmsg_end(msg, hdr);
15704
15705         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15706                                 NL80211_MCGRP_MLME, gfp);
15707         return;
15708
15709  nla_put_failure:
15710         nlmsg_free(msg);
15711 }
15712
15713 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15714                                struct net_device *netdev, const u8 *addr,
15715                                gfp_t gfp)
15716 {
15717         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15718                                   addr, gfp);
15719 }
15720
15721 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15722                                 struct net_device *netdev, const u8 *addr,
15723                                 gfp_t gfp)
15724 {
15725         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15726                                   addr, gfp);
15727 }
15728
15729 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15730                                  struct net_device *netdev,
15731                                  struct cfg80211_connect_resp_params *cr,
15732                                  gfp_t gfp)
15733 {
15734         struct sk_buff *msg;
15735         void *hdr;
15736
15737         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15738                         cr->fils.kek_len + cr->fils.pmk_len +
15739                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15740         if (!msg)
15741                 return;
15742
15743         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15744         if (!hdr) {
15745                 nlmsg_free(msg);
15746                 return;
15747         }
15748
15749         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15750             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15751             (cr->bssid &&
15752              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15753             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15754                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15755                         cr->status) ||
15756             (cr->status < 0 &&
15757              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15758               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15759                           cr->timeout_reason))) ||
15760             (cr->req_ie &&
15761              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15762             (cr->resp_ie &&
15763              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15764                      cr->resp_ie)) ||
15765             (cr->fils.update_erp_next_seq_num &&
15766              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15767                          cr->fils.erp_next_seq_num)) ||
15768             (cr->status == WLAN_STATUS_SUCCESS &&
15769              ((cr->fils.kek &&
15770                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15771                        cr->fils.kek)) ||
15772               (cr->fils.pmk &&
15773                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15774               (cr->fils.pmkid &&
15775                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15776                 goto nla_put_failure;
15777
15778         genlmsg_end(msg, hdr);
15779
15780         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15781                                 NL80211_MCGRP_MLME, gfp);
15782         return;
15783
15784  nla_put_failure:
15785         nlmsg_free(msg);
15786 }
15787
15788 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15789                          struct net_device *netdev,
15790                          struct cfg80211_roam_info *info, gfp_t gfp)
15791 {
15792         struct sk_buff *msg;
15793         void *hdr;
15794         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15795
15796         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15797                         info->fils.kek_len + info->fils.pmk_len +
15798                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15799         if (!msg)
15800                 return;
15801
15802         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15803         if (!hdr) {
15804                 nlmsg_free(msg);
15805                 return;
15806         }
15807
15808         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15809             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15810             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15811             (info->req_ie &&
15812              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15813                      info->req_ie)) ||
15814             (info->resp_ie &&
15815              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15816                      info->resp_ie)) ||
15817             (info->fils.update_erp_next_seq_num &&
15818              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15819                          info->fils.erp_next_seq_num)) ||
15820             (info->fils.kek &&
15821              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15822                      info->fils.kek)) ||
15823             (info->fils.pmk &&
15824              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15825             (info->fils.pmkid &&
15826              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15827                 goto nla_put_failure;
15828
15829         genlmsg_end(msg, hdr);
15830
15831         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15832                                 NL80211_MCGRP_MLME, gfp);
15833         return;
15834
15835  nla_put_failure:
15836         nlmsg_free(msg);
15837 }
15838
15839 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15840                                   struct net_device *netdev, const u8 *bssid)
15841 {
15842         struct sk_buff *msg;
15843         void *hdr;
15844
15845         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15846         if (!msg)
15847                 return;
15848
15849         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15850         if (!hdr) {
15851                 nlmsg_free(msg);
15852                 return;
15853         }
15854
15855         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15856             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15857             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15858                 goto nla_put_failure;
15859
15860         genlmsg_end(msg, hdr);
15861
15862         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15863                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15864         return;
15865
15866  nla_put_failure:
15867         nlmsg_free(msg);
15868 }
15869
15870 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15871                                struct net_device *netdev, u16 reason,
15872                                const u8 *ie, size_t ie_len, bool from_ap)
15873 {
15874         struct sk_buff *msg;
15875         void *hdr;
15876
15877         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15878         if (!msg)
15879                 return;
15880
15881         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15882         if (!hdr) {
15883                 nlmsg_free(msg);
15884                 return;
15885         }
15886
15887         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15888             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15889             (reason &&
15890              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15891             (from_ap &&
15892              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15893             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15894                 goto nla_put_failure;
15895
15896         genlmsg_end(msg, hdr);
15897
15898         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15899                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15900         return;
15901
15902  nla_put_failure:
15903         nlmsg_free(msg);
15904 }
15905
15906 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15907                              struct net_device *netdev, const u8 *bssid,
15908                              gfp_t gfp)
15909 {
15910         struct sk_buff *msg;
15911         void *hdr;
15912
15913         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15914         if (!msg)
15915                 return;
15916
15917         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15918         if (!hdr) {
15919                 nlmsg_free(msg);
15920                 return;
15921         }
15922
15923         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15924             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15925             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15926                 goto nla_put_failure;
15927
15928         genlmsg_end(msg, hdr);
15929
15930         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15931                                 NL80211_MCGRP_MLME, gfp);
15932         return;
15933
15934  nla_put_failure:
15935         nlmsg_free(msg);
15936 }
15937
15938 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15939                                         const u8 *ie, u8 ie_len,
15940                                         int sig_dbm, gfp_t gfp)
15941 {
15942         struct wireless_dev *wdev = dev->ieee80211_ptr;
15943         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15944         struct sk_buff *msg;
15945         void *hdr;
15946
15947         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15948                 return;
15949
15950         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15951
15952         msg = nlmsg_new(100 + ie_len, gfp);
15953         if (!msg)
15954                 return;
15955
15956         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15957         if (!hdr) {
15958                 nlmsg_free(msg);
15959                 return;
15960         }
15961
15962         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15963             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15964             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15965             (ie_len && ie &&
15966              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15967             (sig_dbm &&
15968              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15969                 goto nla_put_failure;
15970
15971         genlmsg_end(msg, hdr);
15972
15973         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15974                                 NL80211_MCGRP_MLME, gfp);
15975         return;
15976
15977  nla_put_failure:
15978         nlmsg_free(msg);
15979 }
15980 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15981
15982 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15983                                  struct net_device *netdev, const u8 *addr,
15984                                  enum nl80211_key_type key_type, int key_id,
15985                                  const u8 *tsc, gfp_t gfp)
15986 {
15987         struct sk_buff *msg;
15988         void *hdr;
15989
15990         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15991         if (!msg)
15992                 return;
15993
15994         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15995         if (!hdr) {
15996                 nlmsg_free(msg);
15997                 return;
15998         }
15999
16000         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16001             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16002             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16003             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16004             (key_id != -1 &&
16005              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16006             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16007                 goto nla_put_failure;
16008
16009         genlmsg_end(msg, hdr);
16010
16011         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16012                                 NL80211_MCGRP_MLME, gfp);
16013         return;
16014
16015  nla_put_failure:
16016         nlmsg_free(msg);
16017 }
16018
16019 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16020                                     struct ieee80211_channel *channel_before,
16021                                     struct ieee80211_channel *channel_after)
16022 {
16023         struct sk_buff *msg;
16024         void *hdr;
16025         struct nlattr *nl_freq;
16026
16027         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16028         if (!msg)
16029                 return;
16030
16031         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16032         if (!hdr) {
16033                 nlmsg_free(msg);
16034                 return;
16035         }
16036
16037         /*
16038          * Since we are applying the beacon hint to a wiphy we know its
16039          * wiphy_idx is valid
16040          */
16041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16042                 goto nla_put_failure;
16043
16044         /* Before */
16045         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16046         if (!nl_freq)
16047                 goto nla_put_failure;
16048
16049         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16050                 goto nla_put_failure;
16051         nla_nest_end(msg, nl_freq);
16052
16053         /* After */
16054         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16055         if (!nl_freq)
16056                 goto nla_put_failure;
16057
16058         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16059                 goto nla_put_failure;
16060         nla_nest_end(msg, nl_freq);
16061
16062         genlmsg_end(msg, hdr);
16063
16064         rcu_read_lock();
16065         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16066                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16067         rcu_read_unlock();
16068
16069         return;
16070
16071 nla_put_failure:
16072         nlmsg_free(msg);
16073 }
16074
16075 static void nl80211_send_remain_on_chan_event(
16076         int cmd, struct cfg80211_registered_device *rdev,
16077         struct wireless_dev *wdev, u64 cookie,
16078         struct ieee80211_channel *chan,
16079         unsigned int duration, gfp_t gfp)
16080 {
16081         struct sk_buff *msg;
16082         void *hdr;
16083
16084         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16085         if (!msg)
16086                 return;
16087
16088         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16089         if (!hdr) {
16090                 nlmsg_free(msg);
16091                 return;
16092         }
16093
16094         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16095             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16096                                          wdev->netdev->ifindex)) ||
16097             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16098                               NL80211_ATTR_PAD) ||
16099             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16100             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16101                         NL80211_CHAN_NO_HT) ||
16102             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16103                               NL80211_ATTR_PAD))
16104                 goto nla_put_failure;
16105
16106         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16107             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16108                 goto nla_put_failure;
16109
16110         genlmsg_end(msg, hdr);
16111
16112         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16113                                 NL80211_MCGRP_MLME, gfp);
16114         return;
16115
16116  nla_put_failure:
16117         nlmsg_free(msg);
16118 }
16119
16120 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16121                                struct ieee80211_channel *chan,
16122                                unsigned int duration, gfp_t gfp)
16123 {
16124         struct wiphy *wiphy = wdev->wiphy;
16125         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16126
16127         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16128         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16129                                           rdev, wdev, cookie, chan,
16130                                           duration, gfp);
16131 }
16132 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16133
16134 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16135                                         struct ieee80211_channel *chan,
16136                                         gfp_t gfp)
16137 {
16138         struct wiphy *wiphy = wdev->wiphy;
16139         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16140
16141         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16142         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16143                                           rdev, wdev, cookie, chan, 0, gfp);
16144 }
16145 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16146
16147 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16148                                         struct ieee80211_channel *chan,
16149                                         gfp_t gfp)
16150 {
16151         struct wiphy *wiphy = wdev->wiphy;
16152         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16153
16154         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16155         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16156                                           rdev, wdev, cookie, chan, 0, gfp);
16157 }
16158 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16159
16160 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16161                       struct station_info *sinfo, gfp_t gfp)
16162 {
16163         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16164         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16165         struct sk_buff *msg;
16166
16167         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16168
16169         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16170         if (!msg)
16171                 return;
16172
16173         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16174                                  rdev, dev, mac_addr, sinfo) < 0) {
16175                 nlmsg_free(msg);
16176                 return;
16177         }
16178
16179         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16180                                 NL80211_MCGRP_MLME, gfp);
16181 }
16182 EXPORT_SYMBOL(cfg80211_new_sta);
16183
16184 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16185                             struct station_info *sinfo, gfp_t gfp)
16186 {
16187         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16188         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16189         struct sk_buff *msg;
16190         struct station_info empty_sinfo = {};
16191
16192         if (!sinfo)
16193                 sinfo = &empty_sinfo;
16194
16195         trace_cfg80211_del_sta(dev, mac_addr);
16196
16197         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16198         if (!msg) {
16199                 cfg80211_sinfo_release_content(sinfo);
16200                 return;
16201         }
16202
16203         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16204                                  rdev, dev, mac_addr, sinfo) < 0) {
16205                 nlmsg_free(msg);
16206                 return;
16207         }
16208
16209         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16210                                 NL80211_MCGRP_MLME, gfp);
16211 }
16212 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16213
16214 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16215                           enum nl80211_connect_failed_reason reason,
16216                           gfp_t gfp)
16217 {
16218         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16219         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16220         struct sk_buff *msg;
16221         void *hdr;
16222
16223         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16224         if (!msg)
16225                 return;
16226
16227         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16228         if (!hdr) {
16229                 nlmsg_free(msg);
16230                 return;
16231         }
16232
16233         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16234             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16235             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16236                 goto nla_put_failure;
16237
16238         genlmsg_end(msg, hdr);
16239
16240         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16241                                 NL80211_MCGRP_MLME, gfp);
16242         return;
16243
16244  nla_put_failure:
16245         nlmsg_free(msg);
16246 }
16247 EXPORT_SYMBOL(cfg80211_conn_failed);
16248
16249 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16250                                        const u8 *addr, gfp_t gfp)
16251 {
16252         struct wireless_dev *wdev = dev->ieee80211_ptr;
16253         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16254         struct sk_buff *msg;
16255         void *hdr;
16256         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16257
16258         if (!nlportid)
16259                 return false;
16260
16261         msg = nlmsg_new(100, gfp);
16262         if (!msg)
16263                 return true;
16264
16265         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16266         if (!hdr) {
16267                 nlmsg_free(msg);
16268                 return true;
16269         }
16270
16271         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16272             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16273             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16274                 goto nla_put_failure;
16275
16276         genlmsg_end(msg, hdr);
16277         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16278         return true;
16279
16280  nla_put_failure:
16281         nlmsg_free(msg);
16282         return true;
16283 }
16284
16285 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16286                                 const u8 *addr, gfp_t gfp)
16287 {
16288         struct wireless_dev *wdev = dev->ieee80211_ptr;
16289         bool ret;
16290
16291         trace_cfg80211_rx_spurious_frame(dev, addr);
16292
16293         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16294                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16295                 trace_cfg80211_return_bool(false);
16296                 return false;
16297         }
16298         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16299                                          addr, gfp);
16300         trace_cfg80211_return_bool(ret);
16301         return ret;
16302 }
16303 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16304
16305 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16306                                         const u8 *addr, gfp_t gfp)
16307 {
16308         struct wireless_dev *wdev = dev->ieee80211_ptr;
16309         bool ret;
16310
16311         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16312
16313         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16314                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16315                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16316                 trace_cfg80211_return_bool(false);
16317                 return false;
16318         }
16319         ret = __nl80211_unexpected_frame(dev,
16320                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16321                                          addr, gfp);
16322         trace_cfg80211_return_bool(ret);
16323         return ret;
16324 }
16325 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16326
16327 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16328                       struct wireless_dev *wdev, u32 nlportid,
16329                       int freq, int sig_dbm,
16330                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16331 {
16332         struct net_device *netdev = wdev->netdev;
16333         struct sk_buff *msg;
16334         void *hdr;
16335
16336         msg = nlmsg_new(100 + len, gfp);
16337         if (!msg)
16338                 return -ENOMEM;
16339
16340         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16341         if (!hdr) {
16342                 nlmsg_free(msg);
16343                 return -ENOMEM;
16344         }
16345
16346         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16347             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16348                                         netdev->ifindex)) ||
16349             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16350                               NL80211_ATTR_PAD) ||
16351             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16352             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16353             (sig_dbm &&
16354              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16355             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16356             (flags &&
16357              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16358                 goto nla_put_failure;
16359
16360         genlmsg_end(msg, hdr);
16361
16362         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16363
16364  nla_put_failure:
16365         nlmsg_free(msg);
16366         return -ENOBUFS;
16367 }
16368
16369 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16370                                     const u8 *buf, size_t len, bool ack,
16371                                     gfp_t gfp, enum nl80211_commands command)
16372 {
16373         struct wiphy *wiphy = wdev->wiphy;
16374         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16375         struct net_device *netdev = wdev->netdev;
16376         struct sk_buff *msg;
16377         void *hdr;
16378
16379         if (command == NL80211_CMD_FRAME_TX_STATUS)
16380                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16381         else
16382                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16383
16384         msg = nlmsg_new(100 + len, gfp);
16385         if (!msg)
16386                 return;
16387
16388         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16389         if (!hdr) {
16390                 nlmsg_free(msg);
16391                 return;
16392         }
16393
16394         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16395             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16396                                    netdev->ifindex)) ||
16397             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16398                               NL80211_ATTR_PAD) ||
16399             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16400             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16401                               NL80211_ATTR_PAD) ||
16402             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16403                 goto nla_put_failure;
16404
16405         genlmsg_end(msg, hdr);
16406
16407         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16408                                 NL80211_MCGRP_MLME, gfp);
16409         return;
16410
16411 nla_put_failure:
16412         nlmsg_free(msg);
16413 }
16414
16415 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16416                                      const u8 *buf, size_t len, bool ack,
16417                                      gfp_t gfp)
16418 {
16419         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16420                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16421 }
16422 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16423
16424 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16425                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16426 {
16427         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16428                                 NL80211_CMD_FRAME_TX_STATUS);
16429 }
16430 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16431
16432 static int __nl80211_rx_control_port(struct net_device *dev,
16433                                      struct sk_buff *skb,
16434                                      bool unencrypted, gfp_t gfp)
16435 {
16436         struct wireless_dev *wdev = dev->ieee80211_ptr;
16437         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16438         struct ethhdr *ehdr = eth_hdr(skb);
16439         const u8 *addr = ehdr->h_source;
16440         u16 proto = be16_to_cpu(skb->protocol);
16441         struct sk_buff *msg;
16442         void *hdr;
16443         struct nlattr *frame;
16444
16445         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16446
16447         if (!nlportid)
16448                 return -ENOENT;
16449
16450         msg = nlmsg_new(100 + skb->len, gfp);
16451         if (!msg)
16452                 return -ENOMEM;
16453
16454         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16455         if (!hdr) {
16456                 nlmsg_free(msg);
16457                 return -ENOBUFS;
16458         }
16459
16460         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16461             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16462             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16463                               NL80211_ATTR_PAD) ||
16464             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16465             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16466             (unencrypted && nla_put_flag(msg,
16467                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16468                 goto nla_put_failure;
16469
16470         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16471         if (!frame)
16472                 goto nla_put_failure;
16473
16474         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16475         genlmsg_end(msg, hdr);
16476
16477         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16478
16479  nla_put_failure:
16480         nlmsg_free(msg);
16481         return -ENOBUFS;
16482 }
16483
16484 bool cfg80211_rx_control_port(struct net_device *dev,
16485                               struct sk_buff *skb, bool unencrypted)
16486 {
16487         int ret;
16488
16489         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16490         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16491         trace_cfg80211_return_bool(ret == 0);
16492         return ret == 0;
16493 }
16494 EXPORT_SYMBOL(cfg80211_rx_control_port);
16495
16496 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16497                                             const char *mac, gfp_t gfp)
16498 {
16499         struct wireless_dev *wdev = dev->ieee80211_ptr;
16500         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16501         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16502         void **cb;
16503
16504         if (!msg)
16505                 return NULL;
16506
16507         cb = (void **)msg->cb;
16508
16509         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16510         if (!cb[0]) {
16511                 nlmsg_free(msg);
16512                 return NULL;
16513         }
16514
16515         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16516             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16517                 goto nla_put_failure;
16518
16519         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16520                 goto nla_put_failure;
16521
16522         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16523         if (!cb[1])
16524                 goto nla_put_failure;
16525
16526         cb[2] = rdev;
16527
16528         return msg;
16529  nla_put_failure:
16530         nlmsg_free(msg);
16531         return NULL;
16532 }
16533
16534 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16535 {
16536         void **cb = (void **)msg->cb;
16537         struct cfg80211_registered_device *rdev = cb[2];
16538
16539         nla_nest_end(msg, cb[1]);
16540         genlmsg_end(msg, cb[0]);
16541
16542         memset(msg->cb, 0, sizeof(msg->cb));
16543
16544         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16545                                 NL80211_MCGRP_MLME, gfp);
16546 }
16547
16548 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16549                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16550                               s32 rssi_level, gfp_t gfp)
16551 {
16552         struct sk_buff *msg;
16553         struct wireless_dev *wdev = dev->ieee80211_ptr;
16554         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16555
16556         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16557
16558         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16559                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16560                 return;
16561
16562         if (wdev->cqm_config) {
16563                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16564
16565                 cfg80211_cqm_rssi_update(rdev, dev);
16566
16567                 if (rssi_level == 0)
16568                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16569         }
16570
16571         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16572         if (!msg)
16573                 return;
16574
16575         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16576                         rssi_event))
16577                 goto nla_put_failure;
16578
16579         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16580                                       rssi_level))
16581                 goto nla_put_failure;
16582
16583         cfg80211_send_cqm(msg, gfp);
16584
16585         return;
16586
16587  nla_put_failure:
16588         nlmsg_free(msg);
16589 }
16590 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16591
16592 void cfg80211_cqm_txe_notify(struct net_device *dev,
16593                              const u8 *peer, u32 num_packets,
16594                              u32 rate, u32 intvl, gfp_t gfp)
16595 {
16596         struct sk_buff *msg;
16597
16598         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16599         if (!msg)
16600                 return;
16601
16602         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16603                 goto nla_put_failure;
16604
16605         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16606                 goto nla_put_failure;
16607
16608         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16609                 goto nla_put_failure;
16610
16611         cfg80211_send_cqm(msg, gfp);
16612         return;
16613
16614  nla_put_failure:
16615         nlmsg_free(msg);
16616 }
16617 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16618
16619 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16620                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16621 {
16622         struct sk_buff *msg;
16623
16624         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16625
16626         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16627         if (!msg)
16628                 return;
16629
16630         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16631                 goto nla_put_failure;
16632
16633         cfg80211_send_cqm(msg, gfp);
16634         return;
16635
16636  nla_put_failure:
16637         nlmsg_free(msg);
16638 }
16639 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16640
16641 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16642 {
16643         struct sk_buff *msg;
16644
16645         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16646         if (!msg)
16647                 return;
16648
16649         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16650                 goto nla_put_failure;
16651
16652         cfg80211_send_cqm(msg, gfp);
16653         return;
16654
16655  nla_put_failure:
16656         nlmsg_free(msg);
16657 }
16658 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16659
16660 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16661                                      struct net_device *netdev, const u8 *bssid,
16662                                      const u8 *replay_ctr, gfp_t gfp)
16663 {
16664         struct sk_buff *msg;
16665         struct nlattr *rekey_attr;
16666         void *hdr;
16667
16668         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16669         if (!msg)
16670                 return;
16671
16672         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16673         if (!hdr) {
16674                 nlmsg_free(msg);
16675                 return;
16676         }
16677
16678         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16679             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16680             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16681                 goto nla_put_failure;
16682
16683         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16684         if (!rekey_attr)
16685                 goto nla_put_failure;
16686
16687         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16688                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16689                 goto nla_put_failure;
16690
16691         nla_nest_end(msg, rekey_attr);
16692
16693         genlmsg_end(msg, hdr);
16694
16695         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16696                                 NL80211_MCGRP_MLME, gfp);
16697         return;
16698
16699  nla_put_failure:
16700         nlmsg_free(msg);
16701 }
16702
16703 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16704                                const u8 *replay_ctr, gfp_t gfp)
16705 {
16706         struct wireless_dev *wdev = dev->ieee80211_ptr;
16707         struct wiphy *wiphy = wdev->wiphy;
16708         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16709
16710         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16711         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16712 }
16713 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16714
16715 static void
16716 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16717                                struct net_device *netdev, int index,
16718                                const u8 *bssid, bool preauth, gfp_t gfp)
16719 {
16720         struct sk_buff *msg;
16721         struct nlattr *attr;
16722         void *hdr;
16723
16724         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16725         if (!msg)
16726                 return;
16727
16728         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16729         if (!hdr) {
16730                 nlmsg_free(msg);
16731                 return;
16732         }
16733
16734         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16735             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16736                 goto nla_put_failure;
16737
16738         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16739         if (!attr)
16740                 goto nla_put_failure;
16741
16742         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16743             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16744             (preauth &&
16745              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16746                 goto nla_put_failure;
16747
16748         nla_nest_end(msg, attr);
16749
16750         genlmsg_end(msg, hdr);
16751
16752         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16753                                 NL80211_MCGRP_MLME, gfp);
16754         return;
16755
16756  nla_put_failure:
16757         nlmsg_free(msg);
16758 }
16759
16760 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16761                                      const u8 *bssid, bool preauth, gfp_t gfp)
16762 {
16763         struct wireless_dev *wdev = dev->ieee80211_ptr;
16764         struct wiphy *wiphy = wdev->wiphy;
16765         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16766
16767         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16768         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16769 }
16770 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16771
16772 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16773                                      struct net_device *netdev,
16774                                      struct cfg80211_chan_def *chandef,
16775                                      gfp_t gfp,
16776                                      enum nl80211_commands notif,
16777                                      u8 count)
16778 {
16779         struct sk_buff *msg;
16780         void *hdr;
16781
16782         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16783         if (!msg)
16784                 return;
16785
16786         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16787         if (!hdr) {
16788                 nlmsg_free(msg);
16789                 return;
16790         }
16791
16792         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16793                 goto nla_put_failure;
16794
16795         if (nl80211_send_chandef(msg, chandef))
16796                 goto nla_put_failure;
16797
16798         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16799             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16800                         goto nla_put_failure;
16801
16802         genlmsg_end(msg, hdr);
16803
16804         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16805                                 NL80211_MCGRP_MLME, gfp);
16806         return;
16807
16808  nla_put_failure:
16809         nlmsg_free(msg);
16810 }
16811
16812 void cfg80211_ch_switch_notify(struct net_device *dev,
16813                                struct cfg80211_chan_def *chandef)
16814 {
16815         struct wireless_dev *wdev = dev->ieee80211_ptr;
16816         struct wiphy *wiphy = wdev->wiphy;
16817         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16818
16819         ASSERT_WDEV_LOCK(wdev);
16820
16821         trace_cfg80211_ch_switch_notify(dev, chandef);
16822
16823         wdev->chandef = *chandef;
16824         wdev->preset_chandef = *chandef;
16825
16826         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16827             !WARN_ON(!wdev->current_bss))
16828                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16829
16830         cfg80211_sched_dfs_chan_update(rdev);
16831
16832         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16833                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16834 }
16835 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16836
16837 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16838                                        struct cfg80211_chan_def *chandef,
16839                                        u8 count)
16840 {
16841         struct wireless_dev *wdev = dev->ieee80211_ptr;
16842         struct wiphy *wiphy = wdev->wiphy;
16843         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16844
16845         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16846
16847         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16848                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16849 }
16850 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16851
16852 void
16853 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16854                      const struct cfg80211_chan_def *chandef,
16855                      enum nl80211_radar_event event,
16856                      struct net_device *netdev, gfp_t gfp)
16857 {
16858         struct sk_buff *msg;
16859         void *hdr;
16860
16861         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16862         if (!msg)
16863                 return;
16864
16865         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16866         if (!hdr) {
16867                 nlmsg_free(msg);
16868                 return;
16869         }
16870
16871         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16872                 goto nla_put_failure;
16873
16874         /* NOP and radar events don't need a netdev parameter */
16875         if (netdev) {
16876                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16877
16878                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16879                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16880                                       NL80211_ATTR_PAD))
16881                         goto nla_put_failure;
16882         }
16883
16884         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16885                 goto nla_put_failure;
16886
16887         if (nl80211_send_chandef(msg, chandef))
16888                 goto nla_put_failure;
16889
16890         genlmsg_end(msg, hdr);
16891
16892         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16893                                 NL80211_MCGRP_MLME, gfp);
16894         return;
16895
16896  nla_put_failure:
16897         nlmsg_free(msg);
16898 }
16899
16900 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16901                                        struct sta_opmode_info *sta_opmode,
16902                                        gfp_t gfp)
16903 {
16904         struct sk_buff *msg;
16905         struct wireless_dev *wdev = dev->ieee80211_ptr;
16906         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16907         void *hdr;
16908
16909         if (WARN_ON(!mac))
16910                 return;
16911
16912         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16913         if (!msg)
16914                 return;
16915
16916         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16917         if (!hdr) {
16918                 nlmsg_free(msg);
16919                 return;
16920         }
16921
16922         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16923                 goto nla_put_failure;
16924
16925         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16926                 goto nla_put_failure;
16927
16928         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16929                 goto nla_put_failure;
16930
16931         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16932             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16933                 goto nla_put_failure;
16934
16935         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16936             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16937                 goto nla_put_failure;
16938
16939         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16940             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16941                 goto nla_put_failure;
16942
16943         genlmsg_end(msg, hdr);
16944
16945         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16946                                 NL80211_MCGRP_MLME, gfp);
16947
16948         return;
16949
16950 nla_put_failure:
16951         nlmsg_free(msg);
16952 }
16953 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16954
16955 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16956                            u64 cookie, bool acked, s32 ack_signal,
16957                            bool is_valid_ack_signal, gfp_t gfp)
16958 {
16959         struct wireless_dev *wdev = dev->ieee80211_ptr;
16960         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16961         struct sk_buff *msg;
16962         void *hdr;
16963
16964         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16965
16966         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16967
16968         if (!msg)
16969                 return;
16970
16971         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16972         if (!hdr) {
16973                 nlmsg_free(msg);
16974                 return;
16975         }
16976
16977         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16978             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16979             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16980             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16981                               NL80211_ATTR_PAD) ||
16982             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16983             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16984                                                 ack_signal)))
16985                 goto nla_put_failure;
16986
16987         genlmsg_end(msg, hdr);
16988
16989         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16990                                 NL80211_MCGRP_MLME, gfp);
16991         return;
16992
16993  nla_put_failure:
16994         nlmsg_free(msg);
16995 }
16996 EXPORT_SYMBOL(cfg80211_probe_status);
16997
16998 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
16999                                      size_t len, int freq, int sig_dbm)
17000 {
17001         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17002         struct sk_buff *msg;
17003         void *hdr;
17004         struct cfg80211_beacon_registration *reg;
17005
17006         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17007
17008         spin_lock_bh(&rdev->beacon_registrations_lock);
17009         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17010                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17011                 if (!msg) {
17012                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17013                         return;
17014                 }
17015
17016                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17017                 if (!hdr)
17018                         goto nla_put_failure;
17019
17020                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17021                     (freq &&
17022                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17023                                   KHZ_TO_MHZ(freq)) ||
17024                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17025                                   freq % 1000))) ||
17026                     (sig_dbm &&
17027                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17028                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17029                         goto nla_put_failure;
17030
17031                 genlmsg_end(msg, hdr);
17032
17033                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17034         }
17035         spin_unlock_bh(&rdev->beacon_registrations_lock);
17036         return;
17037
17038  nla_put_failure:
17039         spin_unlock_bh(&rdev->beacon_registrations_lock);
17040         nlmsg_free(msg);
17041 }
17042 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17043
17044 #ifdef CONFIG_PM
17045 static int cfg80211_net_detect_results(struct sk_buff *msg,
17046                                        struct cfg80211_wowlan_wakeup *wakeup)
17047 {
17048         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17049         struct nlattr *nl_results, *nl_match, *nl_freqs;
17050         int i, j;
17051
17052         nl_results = nla_nest_start_noflag(msg,
17053                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17054         if (!nl_results)
17055                 return -EMSGSIZE;
17056
17057         for (i = 0; i < nd->n_matches; i++) {
17058                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17059
17060                 nl_match = nla_nest_start_noflag(msg, i);
17061                 if (!nl_match)
17062                         break;
17063
17064                 /* The SSID attribute is optional in nl80211, but for
17065                  * simplicity reasons it's always present in the
17066                  * cfg80211 structure.  If a driver can't pass the
17067                  * SSID, that needs to be changed.  A zero length SSID
17068                  * is still a valid SSID (wildcard), so it cannot be
17069                  * used for this purpose.
17070                  */
17071                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17072                             match->ssid.ssid)) {
17073                         nla_nest_cancel(msg, nl_match);
17074                         goto out;
17075                 }
17076
17077                 if (match->n_channels) {
17078                         nl_freqs = nla_nest_start_noflag(msg,
17079                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17080                         if (!nl_freqs) {
17081                                 nla_nest_cancel(msg, nl_match);
17082                                 goto out;
17083                         }
17084
17085                         for (j = 0; j < match->n_channels; j++) {
17086                                 if (nla_put_u32(msg, j, match->channels[j])) {
17087                                         nla_nest_cancel(msg, nl_freqs);
17088                                         nla_nest_cancel(msg, nl_match);
17089                                         goto out;
17090                                 }
17091                         }
17092
17093                         nla_nest_end(msg, nl_freqs);
17094                 }
17095
17096                 nla_nest_end(msg, nl_match);
17097         }
17098
17099 out:
17100         nla_nest_end(msg, nl_results);
17101         return 0;
17102 }
17103
17104 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17105                                    struct cfg80211_wowlan_wakeup *wakeup,
17106                                    gfp_t gfp)
17107 {
17108         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17109         struct sk_buff *msg;
17110         void *hdr;
17111         int size = 200;
17112
17113         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17114
17115         if (wakeup)
17116                 size += wakeup->packet_present_len;
17117
17118         msg = nlmsg_new(size, gfp);
17119         if (!msg)
17120                 return;
17121
17122         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17123         if (!hdr)
17124                 goto free_msg;
17125
17126         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17127             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17128                               NL80211_ATTR_PAD))
17129                 goto free_msg;
17130
17131         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17132                                         wdev->netdev->ifindex))
17133                 goto free_msg;
17134
17135         if (wakeup) {
17136                 struct nlattr *reasons;
17137
17138                 reasons = nla_nest_start_noflag(msg,
17139                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17140                 if (!reasons)
17141                         goto free_msg;
17142
17143                 if (wakeup->disconnect &&
17144                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17145                         goto free_msg;
17146                 if (wakeup->magic_pkt &&
17147                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17148                         goto free_msg;
17149                 if (wakeup->gtk_rekey_failure &&
17150                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17151                         goto free_msg;
17152                 if (wakeup->eap_identity_req &&
17153                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17154                         goto free_msg;
17155                 if (wakeup->four_way_handshake &&
17156                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17157                         goto free_msg;
17158                 if (wakeup->rfkill_release &&
17159                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17160                         goto free_msg;
17161
17162                 if (wakeup->pattern_idx >= 0 &&
17163                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17164                                 wakeup->pattern_idx))
17165                         goto free_msg;
17166
17167                 if (wakeup->tcp_match &&
17168                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17169                         goto free_msg;
17170
17171                 if (wakeup->tcp_connlost &&
17172                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17173                         goto free_msg;
17174
17175                 if (wakeup->tcp_nomoretokens &&
17176                     nla_put_flag(msg,
17177                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17178                         goto free_msg;
17179
17180                 if (wakeup->packet) {
17181                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17182                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17183
17184                         if (!wakeup->packet_80211) {
17185                                 pkt_attr =
17186                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17187                                 len_attr =
17188                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17189                         }
17190
17191                         if (wakeup->packet_len &&
17192                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17193                                 goto free_msg;
17194
17195                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17196                                     wakeup->packet))
17197                                 goto free_msg;
17198                 }
17199
17200                 if (wakeup->net_detect &&
17201                     cfg80211_net_detect_results(msg, wakeup))
17202                                 goto free_msg;
17203
17204                 nla_nest_end(msg, reasons);
17205         }
17206
17207         genlmsg_end(msg, hdr);
17208
17209         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17210                                 NL80211_MCGRP_MLME, gfp);
17211         return;
17212
17213  free_msg:
17214         nlmsg_free(msg);
17215 }
17216 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17217 #endif
17218
17219 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17220                                 enum nl80211_tdls_operation oper,
17221                                 u16 reason_code, gfp_t gfp)
17222 {
17223         struct wireless_dev *wdev = dev->ieee80211_ptr;
17224         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17225         struct sk_buff *msg;
17226         void *hdr;
17227
17228         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17229                                          reason_code);
17230
17231         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17232         if (!msg)
17233                 return;
17234
17235         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17236         if (!hdr) {
17237                 nlmsg_free(msg);
17238                 return;
17239         }
17240
17241         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17242             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17243             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17244             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17245             (reason_code > 0 &&
17246              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17247                 goto nla_put_failure;
17248
17249         genlmsg_end(msg, hdr);
17250
17251         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17252                                 NL80211_MCGRP_MLME, gfp);
17253         return;
17254
17255  nla_put_failure:
17256         nlmsg_free(msg);
17257 }
17258 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17259
17260 static int nl80211_netlink_notify(struct notifier_block * nb,
17261                                   unsigned long state,
17262                                   void *_notify)
17263 {
17264         struct netlink_notify *notify = _notify;
17265         struct cfg80211_registered_device *rdev;
17266         struct wireless_dev *wdev;
17267         struct cfg80211_beacon_registration *reg, *tmp;
17268
17269         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17270                 return NOTIFY_DONE;
17271
17272         rcu_read_lock();
17273
17274         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17275                 struct cfg80211_sched_scan_request *sched_scan_req;
17276
17277                 list_for_each_entry_rcu(sched_scan_req,
17278                                         &rdev->sched_scan_req_list,
17279                                         list) {
17280                         if (sched_scan_req->owner_nlportid == notify->portid) {
17281                                 sched_scan_req->nl_owner_dead = true;
17282                                 schedule_work(&rdev->sched_scan_stop_wk);
17283                         }
17284                 }
17285
17286                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17287                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17288
17289                         if (wdev->owner_nlportid == notify->portid) {
17290                                 wdev->nl_owner_dead = true;
17291                                 schedule_work(&rdev->destroy_work);
17292                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17293                                 schedule_work(&wdev->disconnect_wk);
17294                         }
17295
17296                         cfg80211_release_pmsr(wdev, notify->portid);
17297                 }
17298
17299                 spin_lock_bh(&rdev->beacon_registrations_lock);
17300                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17301                                          list) {
17302                         if (reg->nlportid == notify->portid) {
17303                                 list_del(&reg->list);
17304                                 kfree(reg);
17305                                 break;
17306                         }
17307                 }
17308                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17309         }
17310
17311         rcu_read_unlock();
17312
17313         /*
17314          * It is possible that the user space process that is controlling the
17315          * indoor setting disappeared, so notify the regulatory core.
17316          */
17317         regulatory_netlink_notify(notify->portid);
17318         return NOTIFY_OK;
17319 }
17320
17321 static struct notifier_block nl80211_netlink_notifier = {
17322         .notifier_call = nl80211_netlink_notify,
17323 };
17324
17325 void cfg80211_ft_event(struct net_device *netdev,
17326                        struct cfg80211_ft_event_params *ft_event)
17327 {
17328         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17329         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17330         struct sk_buff *msg;
17331         void *hdr;
17332
17333         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17334
17335         if (!ft_event->target_ap)
17336                 return;
17337
17338         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17339                         GFP_KERNEL);
17340         if (!msg)
17341                 return;
17342
17343         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17344         if (!hdr)
17345                 goto out;
17346
17347         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17348             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17349             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17350                 goto out;
17351
17352         if (ft_event->ies &&
17353             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17354                 goto out;
17355         if (ft_event->ric_ies &&
17356             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17357                     ft_event->ric_ies))
17358                 goto out;
17359
17360         genlmsg_end(msg, hdr);
17361
17362         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17363                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17364         return;
17365  out:
17366         nlmsg_free(msg);
17367 }
17368 EXPORT_SYMBOL(cfg80211_ft_event);
17369
17370 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17371 {
17372         struct cfg80211_registered_device *rdev;
17373         struct sk_buff *msg;
17374         void *hdr;
17375         u32 nlportid;
17376
17377         rdev = wiphy_to_rdev(wdev->wiphy);
17378         if (!rdev->crit_proto_nlportid)
17379                 return;
17380
17381         nlportid = rdev->crit_proto_nlportid;
17382         rdev->crit_proto_nlportid = 0;
17383
17384         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17385         if (!msg)
17386                 return;
17387
17388         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17389         if (!hdr)
17390                 goto nla_put_failure;
17391
17392         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17393             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17394                               NL80211_ATTR_PAD))
17395                 goto nla_put_failure;
17396
17397         genlmsg_end(msg, hdr);
17398
17399         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17400         return;
17401
17402  nla_put_failure:
17403         nlmsg_free(msg);
17404 }
17405 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17406
17407 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17408 {
17409         struct wiphy *wiphy = wdev->wiphy;
17410         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17411         struct sk_buff *msg;
17412         void *hdr;
17413
17414         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17415         if (!msg)
17416                 return;
17417
17418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17419         if (!hdr)
17420                 goto out;
17421
17422         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17423             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17424             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17425                               NL80211_ATTR_PAD))
17426                 goto out;
17427
17428         genlmsg_end(msg, hdr);
17429
17430         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17431                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17432         return;
17433  out:
17434         nlmsg_free(msg);
17435 }
17436
17437 int cfg80211_external_auth_request(struct net_device *dev,
17438                                    struct cfg80211_external_auth_params *params,
17439                                    gfp_t gfp)
17440 {
17441         struct wireless_dev *wdev = dev->ieee80211_ptr;
17442         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17443         struct sk_buff *msg;
17444         void *hdr;
17445
17446         if (!wdev->conn_owner_nlportid)
17447                 return -EINVAL;
17448
17449         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17450         if (!msg)
17451                 return -ENOMEM;
17452
17453         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17454         if (!hdr)
17455                 goto nla_put_failure;
17456
17457         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17458             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17459             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17460             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17461                         params->action) ||
17462             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17463             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17464                     params->ssid.ssid))
17465                 goto nla_put_failure;
17466
17467         genlmsg_end(msg, hdr);
17468         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17469                         wdev->conn_owner_nlportid);
17470         return 0;
17471
17472  nla_put_failure:
17473         nlmsg_free(msg);
17474         return -ENOBUFS;
17475 }
17476 EXPORT_SYMBOL(cfg80211_external_auth_request);
17477
17478 void cfg80211_update_owe_info_event(struct net_device *netdev,
17479                                     struct cfg80211_update_owe_info *owe_info,
17480                                     gfp_t gfp)
17481 {
17482         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17483         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17484         struct sk_buff *msg;
17485         void *hdr;
17486
17487         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17488
17489         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17490         if (!msg)
17491                 return;
17492
17493         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17494         if (!hdr)
17495                 goto nla_put_failure;
17496
17497         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17498             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17499             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17500                 goto nla_put_failure;
17501
17502         if (!owe_info->ie_len ||
17503             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17504                 goto nla_put_failure;
17505
17506         genlmsg_end(msg, hdr);
17507
17508         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17509                                 NL80211_MCGRP_MLME, gfp);
17510         return;
17511
17512 nla_put_failure:
17513         genlmsg_cancel(msg, hdr);
17514         nlmsg_free(msg);
17515 }
17516 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17517
17518 /* initialisation/exit functions */
17519
17520 int __init nl80211_init(void)
17521 {
17522         int err;
17523
17524         err = genl_register_family(&nl80211_fam);
17525         if (err)
17526                 return err;
17527
17528         err = netlink_register_notifier(&nl80211_netlink_notifier);
17529         if (err)
17530                 goto err_out;
17531
17532         return 0;
17533  err_out:
17534         genl_unregister_family(&nl80211_fam);
17535         return err;
17536 }
17537
17538 void nl80211_exit(void)
17539 {
17540         netlink_unregister_notifier(&nl80211_netlink_notifier);
17541         genl_unregister_family(&nl80211_fam);
17542 }