net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  77                                    MONITOR_FLAG_ACTIVE;
  78
  79                         /*
  80                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  81                          * MONITOR_FLAG_ACTIVE to be changed while the
  82                          * interface is up.
  83                          * Else we would need to add a lot of cruft
  84                          * to update everything:
  85                          *      cooked_mntrs, monitor and all fif_* counters
  86                          *      reconfigure hardware
  87                          */
  88                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  89                                 return -EBUSY;
  90
  91                         ieee80211_adjust_monitor_flags(sdata, -1);
  92                         sdata->u.mntr_flags = *flags;
  93                         ieee80211_adjust_monitor_flags(sdata, 1);
  94
  95                         ieee80211_configure_filter(local);
  96                 } else {
  97                         /*
  98                          * Because the interface is down, ieee80211_do_stop
  99                          * and ieee80211_do_open take care of "everything"
 100                          * mentioned in the comment above.
 101                          */
 102                         sdata->u.mntr_flags = *flags;
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 110                                       struct wireless_dev *wdev)
 111 {
 112         return ieee80211_do_open(wdev, true);
 113 }
 114
 115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 116                                       struct wireless_dev *wdev)
 117 {
 118         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 119 }
 120
 121 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 122                                   struct net_device *dev,
 123                                   u16 noack_map)
 124 {
 125         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 126
 127         sdata->noack_map = noack_map;
 128         return 0;
 129 }
 130
 131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 132                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 133                              struct key_params *params)
 134 {
 135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 136         struct ieee80211_local *local = sdata->local;
 137         struct sta_info *sta = NULL;
 138         const struct ieee80211_cipher_scheme *cs = NULL;
 139         struct ieee80211_key *key;
 140         int err;
 141
 142         if (!ieee80211_sdata_running(sdata))
 143                 return -ENETDOWN;
 144
 145         /* reject WEP and TKIP keys if WEP failed to initialize */
 146         switch (params->cipher) {
 147         case WLAN_CIPHER_SUITE_WEP40:
 148         case WLAN_CIPHER_SUITE_TKIP:
 149         case WLAN_CIPHER_SUITE_WEP104:
 150                 if (IS_ERR(local->wep_tx_tfm))
 151                         return -EINVAL;
 152                 break;
 153         case WLAN_CIPHER_SUITE_CCMP:
 154         case WLAN_CIPHER_SUITE_AES_CMAC:
 155         case WLAN_CIPHER_SUITE_GCMP:
 156                 break;
 157         default:
 158                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 159                 break;
 160         }
 161
 162         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 163                                   params->key, params->seq_len, params->seq,
 164                                   cs);
 165         if (IS_ERR(key))
 166                 return PTR_ERR(key);
 167
 168         if (pairwise)
 169                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 170
 171         mutex_lock(&local->sta_mtx);
 172
 173         if (mac_addr) {
 174                 if (ieee80211_vif_is_mesh(&sdata->vif))
 175                         sta = sta_info_get(sdata, mac_addr);
 176                 else
 177                         sta = sta_info_get_bss(sdata, mac_addr);
 178                 /*
 179                  * The ASSOC test makes sure the driver is ready to
 180                  * receive the key. When wpa_supplicant has roamed
 181                  * using FT, it attempts to set the key before
 182                  * association has completed, this rejects that attempt
 183                  * so it will set the key again after assocation.
 184                  *
 185                  * TODO: accept the key if we have a station entry and
 186                  *       add it to the device after the station.
 187                  */
 188                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 189                         ieee80211_key_free_unused(key);
 190                         err = -ENOENT;
 191                         goto out_unlock;
 192                 }
 193         }
 194
 195         switch (sdata->vif.type) {
 196         case NL80211_IFTYPE_STATION:
 197                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 198                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 199                 break;
 200         case NL80211_IFTYPE_AP:
 201         case NL80211_IFTYPE_AP_VLAN:
 202                 /* Keys without a station are used for TX only */
 203                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 204                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 205                 break;
 206         case NL80211_IFTYPE_ADHOC:
 207                 /* no MFP (yet) */
 208                 break;
 209         case NL80211_IFTYPE_MESH_POINT:
 210 #ifdef CONFIG_MAC80211_MESH
 211                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 212                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 213                 break;
 214 #endif
 215         case NL80211_IFTYPE_WDS:
 216         case NL80211_IFTYPE_MONITOR:
 217         case NL80211_IFTYPE_P2P_DEVICE:
 218         case NL80211_IFTYPE_UNSPECIFIED:
 219         case NUM_NL80211_IFTYPES:
 220         case NL80211_IFTYPE_P2P_CLIENT:
 221         case NL80211_IFTYPE_P2P_GO:
 222                 /* shouldn't happen */
 223                 WARN_ON_ONCE(1);
 224                 break;
 225         }
 226
 227         if (sta)
 228                 sta->cipher_scheme = cs;
 229
 230         err = ieee80211_key_link(key, sdata, sta);
 231
 232  out_unlock:
 233         mutex_unlock(&local->sta_mtx);
 234
 235         return err;
 236 }
 237
 238 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 239                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 240 {
 241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 242         struct ieee80211_local *local = sdata->local;
 243         struct sta_info *sta;
 244         struct ieee80211_key *key = NULL;
 245         int ret;
 246
 247         mutex_lock(&local->sta_mtx);
 248         mutex_lock(&local->key_mtx);
 249
 250         if (mac_addr) {
 251                 ret = -ENOENT;
 252
 253                 sta = sta_info_get_bss(sdata, mac_addr);
 254                 if (!sta)
 255                         goto out_unlock;
 256
 257                 if (pairwise)
 258                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 259                 else
 260                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 261         } else
 262                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 263
 264         if (!key) {
 265                 ret = -ENOENT;
 266                 goto out_unlock;
 267         }
 268
 269         ieee80211_key_free(key, true);
 270
 271         ret = 0;
 272  out_unlock:
 273         mutex_unlock(&local->key_mtx);
 274         mutex_unlock(&local->sta_mtx);
 275
 276         return ret;
 277 }
 278
 279 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 280                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 281                              void *cookie,
 282                              void (*callback)(void *cookie,
 283                                               struct key_params *params))
 284 {
 285         struct ieee80211_sub_if_data *sdata;
 286         struct sta_info *sta = NULL;
 287         u8 seq[6] = {0};
 288         struct key_params params;
 289         struct ieee80211_key *key = NULL;
 290         u64 pn64;
 291         u32 iv32;
 292         u16 iv16;
 293         int err = -ENOENT;
 294
 295         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 296
 297         rcu_read_lock();
 298
 299         if (mac_addr) {
 300                 sta = sta_info_get_bss(sdata, mac_addr);
 301                 if (!sta)
 302                         goto out;
 303
 304                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 305                         key = rcu_dereference(sta->ptk[key_idx]);
 306                 else if (!pairwise &&
 307                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 308                         key = rcu_dereference(sta->gtk[key_idx]);
 309         } else
 310                 key = rcu_dereference(sdata->keys[key_idx]);
 311
 312         if (!key)
 313                 goto out;
 314
 315         memset(&params, 0, sizeof(params));
 316
 317         params.cipher = key->conf.cipher;
 318
 319         switch (key->conf.cipher) {
 320         case WLAN_CIPHER_SUITE_TKIP:
 321                 iv32 = key->u.tkip.tx.iv32;
 322                 iv16 = key->u.tkip.tx.iv16;
 323
 324                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 325                         drv_get_tkip_seq(sdata->local,
 326                                          key->conf.hw_key_idx,
 327                                          &iv32, &iv16);
 328
 329                 seq[0] = iv16 & 0xff;
 330                 seq[1] = (iv16 >> 8) & 0xff;
 331                 seq[2] = iv32 & 0xff;
 332                 seq[3] = (iv32 >> 8) & 0xff;
 333                 seq[4] = (iv32 >> 16) & 0xff;
 334                 seq[5] = (iv32 >> 24) & 0xff;
 335                 params.seq = seq;
 336                 params.seq_len = 6;
 337                 break;
 338         case WLAN_CIPHER_SUITE_CCMP:
 339                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 340                 seq[0] = pn64;
 341                 seq[1] = pn64 >> 8;
 342                 seq[2] = pn64 >> 16;
 343                 seq[3] = pn64 >> 24;
 344                 seq[4] = pn64 >> 32;
 345                 seq[5] = pn64 >> 40;
 346                 params.seq = seq;
 347                 params.seq_len = 6;
 348                 break;
 349         case WLAN_CIPHER_SUITE_AES_CMAC:
 350                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 351                 seq[0] = pn64;
 352                 seq[1] = pn64 >> 8;
 353                 seq[2] = pn64 >> 16;
 354                 seq[3] = pn64 >> 24;
 355                 seq[4] = pn64 >> 32;
 356                 seq[5] = pn64 >> 40;
 357                 params.seq = seq;
 358                 params.seq_len = 6;
 359                 break;
 360         }
 361
 362         params.key = key->conf.key;
 363         params.key_len = key->conf.keylen;
 364
 365         callback(cookie, &params);
 366         err = 0;
 367
 368  out:
 369         rcu_read_unlock();
 370         return err;
 371 }
 372
 373 static int ieee80211_config_default_key(struct wiphy *wiphy,
 374                                         struct net_device *dev,
 375                                         u8 key_idx, bool uni,
 376                                         bool multi)
 377 {
 378         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 379
 380         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 381
 382         return 0;
 383 }
 384
 385 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 386                                              struct net_device *dev,
 387                                              u8 key_idx)
 388 {
 389         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 390
 391         ieee80211_set_default_mgmt_key(sdata, key_idx);
 392
 393         return 0;
 394 }
 395
 396 void sta_set_rate_info_tx(struct sta_info *sta,
 397                           const struct ieee80211_tx_rate *rate,
 398                           struct rate_info *rinfo)
 399 {
 400         rinfo->flags = 0;
 401         if (rate->flags & IEEE80211_TX_RC_MCS) {
 402                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 403                 rinfo->mcs = rate->idx;
 404         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 405                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 406                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 407                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 408         } else {
 409                 struct ieee80211_supported_band *sband;
 410                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 411                 u16 brate;
 412
 413                 sband = sta->local->hw.wiphy->bands[
 414                                 ieee80211_get_sdata_band(sta->sdata)];
 415                 brate = sband->bitrates[rate->idx].bitrate;
 416                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 417         }
 418         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 419                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 420         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 421                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 422         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 423                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 424         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 425                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 426 }
 427
 428 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 429 {
 430         rinfo->flags = 0;
 431
 432         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 433                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 434                 rinfo->mcs = sta->last_rx_rate_idx;
 435         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 436                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 437                 rinfo->nss = sta->last_rx_rate_vht_nss;
 438                 rinfo->mcs = sta->last_rx_rate_idx;
 439         } else {
 440                 struct ieee80211_supported_band *sband;
 441                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 442                 u16 brate;
 443
 444                 sband = sta->local->hw.wiphy->bands[
 445                                 ieee80211_get_sdata_band(sta->sdata)];
 446                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 447                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 448         }
 449
 450         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 451                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 452         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 453                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 454         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 455                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 456         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 457                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 458         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 459                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 460 }
 461
 462 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 463 {
 464         struct ieee80211_sub_if_data *sdata = sta->sdata;
 465         struct ieee80211_local *local = sdata->local;
 466         struct timespec uptime;
 467         u64 packets = 0;
 468         int i, ac;
 469
 470         sinfo->generation = sdata->local->sta_generation;
 471
 472         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 473                         STATION_INFO_RX_BYTES64 |
 474                         STATION_INFO_TX_BYTES64 |
 475                         STATION_INFO_RX_PACKETS |
 476                         STATION_INFO_TX_PACKETS |
 477                         STATION_INFO_TX_RETRIES |
 478                         STATION_INFO_TX_FAILED |
 479                         STATION_INFO_TX_BITRATE |
 480                         STATION_INFO_RX_BITRATE |
 481                         STATION_INFO_RX_DROP_MISC |
 482                         STATION_INFO_BSS_PARAM |
 483                         STATION_INFO_CONNECTED_TIME |
 484                         STATION_INFO_STA_FLAGS |
 485                         STATION_INFO_BEACON_LOSS_COUNT;
 486
 487         do_posix_clock_monotonic_gettime(&uptime);
 488         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 489
 490         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 491         sinfo->tx_bytes = 0;
 492         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 493                 sinfo->tx_bytes += sta->tx_bytes[ac];
 494                 packets += sta->tx_packets[ac];
 495         }
 496         sinfo->tx_packets = packets;
 497         sinfo->rx_bytes = sta->rx_bytes;
 498         sinfo->rx_packets = sta->rx_packets;
 499         sinfo->tx_retries = sta->tx_retry_count;
 500         sinfo->tx_failed = sta->tx_retry_failed;
 501         sinfo->rx_dropped_misc = sta->rx_dropped;
 502         sinfo->beacon_loss_count = sta->beacon_loss_count;
 503
 504         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 505             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 506                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 507                 if (!local->ops->get_rssi ||
 508                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 509                         sinfo->signal = (s8)sta->last_signal;
 510                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 511         }
 512         if (sta->chains) {
 513                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 514                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 515
 516                 sinfo->chains = sta->chains;
 517                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 518                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 519                         sinfo->chain_signal_avg[i] =
 520                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 521                 }
 522         }
 523
 524         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 525         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 526
 527         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 528 #ifdef CONFIG_MAC80211_MESH
 529                 sinfo->filled |= STATION_INFO_LLID |
 530                                  STATION_INFO_PLID |
 531                                  STATION_INFO_PLINK_STATE |
 532                                  STATION_INFO_LOCAL_PM |
 533                                  STATION_INFO_PEER_PM |
 534                                  STATION_INFO_NONPEER_PM;
 535
 536                 sinfo->llid = sta->llid;
 537                 sinfo->plid = sta->plid;
 538                 sinfo->plink_state = sta->plink_state;
 539                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 540                         sinfo->filled |= STATION_INFO_T_OFFSET;
 541                         sinfo->t_offset = sta->t_offset;
 542                 }
 543                 sinfo->local_pm = sta->local_pm;
 544                 sinfo->peer_pm = sta->peer_pm;
 545                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 546 #endif
 547         }
 548
 549         sinfo->bss_param.flags = 0;
 550         if (sdata->vif.bss_conf.use_cts_prot)
 551                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 552         if (sdata->vif.bss_conf.use_short_preamble)
 553                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 554         if (sdata->vif.bss_conf.use_short_slot)
 555                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 556         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 557         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 558
 559         sinfo->sta_flags.set = 0;
 560         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 561                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 562                                 BIT(NL80211_STA_FLAG_WME) |
 563                                 BIT(NL80211_STA_FLAG_MFP) |
 564                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 565                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 566                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 567         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 568                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 569         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 570                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 571         if (test_sta_flag(sta, WLAN_STA_WME))
 572                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 573         if (test_sta_flag(sta, WLAN_STA_MFP))
 574                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 575         if (test_sta_flag(sta, WLAN_STA_AUTH))
 576                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 577         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 578                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 579         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 580                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 581 }
 582
 583 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 584         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 585         "rx_duplicates", "rx_fragments", "rx_dropped",
 586         "tx_packets", "tx_bytes", "tx_fragments",
 587         "tx_filtered", "tx_retry_failed", "tx_retries",
 588         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 589         "channel", "noise", "ch_time", "ch_time_busy",
 590         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 591 };
 592 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 593
 594 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 595                                        struct net_device *dev,
 596                                        int sset)
 597 {
 598         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 599         int rv = 0;
 600
 601         if (sset == ETH_SS_STATS)
 602                 rv += STA_STATS_LEN;
 603
 604         rv += drv_get_et_sset_count(sdata, sset);
 605
 606         if (rv == 0)
 607                 return -EOPNOTSUPP;
 608         return rv;
 609 }
 610
 611 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 612                                    struct net_device *dev,
 613                                    struct ethtool_stats *stats,
 614                                    u64 *data)
 615 {
 616         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 617         struct ieee80211_chanctx_conf *chanctx_conf;
 618         struct ieee80211_channel *channel;
 619         struct sta_info *sta;
 620         struct ieee80211_local *local = sdata->local;
 621         struct station_info sinfo;
 622         struct survey_info survey;
 623         int i, q;
 624 #define STA_STATS_SURVEY_LEN 7
 625
 626         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 627
 628 #define ADD_STA_STATS(sta)                              \
 629         do {                                            \
 630                 data[i++] += sta->rx_packets;           \
 631                 data[i++] += sta->rx_bytes;             \
 632                 data[i++] += sta->wep_weak_iv_count;    \
 633                 data[i++] += sta->num_duplicates;       \
 634                 data[i++] += sta->rx_fragments;         \
 635                 data[i++] += sta->rx_dropped;           \
 636                                                         \
 637                 data[i++] += sinfo.tx_packets;          \
 638                 data[i++] += sinfo.tx_bytes;            \
 639                 data[i++] += sta->tx_fragments;         \
 640                 data[i++] += sta->tx_filtered_count;    \
 641                 data[i++] += sta->tx_retry_failed;      \
 642                 data[i++] += sta->tx_retry_count;       \
 643                 data[i++] += sta->beacon_loss_count;    \
 644         } while (0)
 645
 646         /* For Managed stations, find the single station based on BSSID
 647          * and use that.  For interface types, iterate through all available
 648          * stations and add stats for any station that is assigned to this
 649          * network device.
 650          */
 651
 652         mutex_lock(&local->sta_mtx);
 653
 654         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 655                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 656
 657                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 658                         goto do_survey;
 659
 660                 sinfo.filled = 0;
 661                 sta_set_sinfo(sta, &sinfo);
 662
 663                 i = 0;
 664                 ADD_STA_STATS(sta);
 665
 666                 data[i++] = sta->sta_state;
 667
 668
 669                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 670                         data[i] = 100000 *
 671                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 672                 i++;
 673                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 674                         data[i] = 100000 *
 675                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 676                 i++;
 677
 678                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 679                         data[i] = (u8)sinfo.signal_avg;
 680                 i++;
 681         } else {
 682                 list_for_each_entry(sta, &local->sta_list, list) {
 683                         /* Make sure this station belongs to the proper dev */
 684                         if (sta->sdata->dev != dev)
 685                                 continue;
 686
 687                         sinfo.filled = 0;
 688                         sta_set_sinfo(sta, &sinfo);
 689                         i = 0;
 690                         ADD_STA_STATS(sta);
 691                 }
 692         }
 693
 694 do_survey:
 695         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 696         /* Get survey stats for current channel */
 697         survey.filled = 0;
 698
 699         rcu_read_lock();
 700         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 701         if (chanctx_conf)
 702                 channel = chanctx_conf->def.chan;
 703         else
 704                 channel = NULL;
 705         rcu_read_unlock();
 706
 707         if (channel) {
 708                 q = 0;
 709                 do {
 710                         survey.filled = 0;
 711                         if (drv_get_survey(local, q, &survey) != 0) {
 712                                 survey.filled = 0;
 713                                 break;
 714                         }
 715                         q++;
 716                 } while (channel != survey.channel);
 717         }
 718
 719         if (survey.filled)
 720                 data[i++] = survey.channel->center_freq;
 721         else
 722                 data[i++] = 0;
 723         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 724                 data[i++] = (u8)survey.noise;
 725         else
 726                 data[i++] = -1LL;
 727         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 728                 data[i++] = survey.channel_time;
 729         else
 730                 data[i++] = -1LL;
 731         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 732                 data[i++] = survey.channel_time_busy;
 733         else
 734                 data[i++] = -1LL;
 735         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 736                 data[i++] = survey.channel_time_ext_busy;
 737         else
 738                 data[i++] = -1LL;
 739         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 740                 data[i++] = survey.channel_time_rx;
 741         else
 742                 data[i++] = -1LL;
 743         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 744                 data[i++] = survey.channel_time_tx;
 745         else
 746                 data[i++] = -1LL;
 747
 748         mutex_unlock(&local->sta_mtx);
 749
 750         if (WARN_ON(i != STA_STATS_LEN))
 751                 return;
 752
 753         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 754 }
 755
 756 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 757                                      struct net_device *dev,
 758                                      u32 sset, u8 *data)
 759 {
 760         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 761         int sz_sta_stats = 0;
 762
 763         if (sset == ETH_SS_STATS) {
 764                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 765                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 766         }
 767         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 768 }
 769
 770 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 771                                  int idx, u8 *mac, struct station_info *sinfo)
 772 {
 773         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 774         struct ieee80211_local *local = sdata->local;
 775         struct sta_info *sta;
 776         int ret = -ENOENT;
 777
 778         mutex_lock(&local->sta_mtx);
 779
 780         sta = sta_info_get_by_idx(sdata, idx);
 781         if (sta) {
 782                 ret = 0;
 783                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 784                 sta_set_sinfo(sta, sinfo);
 785         }
 786
 787         mutex_unlock(&local->sta_mtx);
 788
 789         return ret;
 790 }
 791
 792 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 793                                  int idx, struct survey_info *survey)
 794 {
 795         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 796
 797         return drv_get_survey(local, idx, survey);
 798 }
 799
 800 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 801                                  u8 *mac, struct station_info *sinfo)
 802 {
 803         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 804         struct ieee80211_local *local = sdata->local;
 805         struct sta_info *sta;
 806         int ret = -ENOENT;
 807
 808         mutex_lock(&local->sta_mtx);
 809
 810         sta = sta_info_get_bss(sdata, mac);
 811         if (sta) {
 812                 ret = 0;
 813                 sta_set_sinfo(sta, sinfo);
 814         }
 815
 816         mutex_unlock(&local->sta_mtx);
 817
 818         return ret;
 819 }
 820
 821 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 822                                          struct cfg80211_chan_def *chandef)
 823 {
 824         struct ieee80211_local *local = wiphy_priv(wiphy);
 825         struct ieee80211_sub_if_data *sdata;
 826         int ret = 0;
 827
 828         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 829                 return 0;
 830
 831         mutex_lock(&local->mtx);
 832         mutex_lock(&local->iflist_mtx);
 833         if (local->use_chanctx) {
 834                 sdata = rcu_dereference_protected(
 835                                 local->monitor_sdata,
 836                                 lockdep_is_held(&local->iflist_mtx));
 837                 if (sdata) {
 838                         ieee80211_vif_release_channel(sdata);
 839                         ret = ieee80211_vif_use_channel(sdata, chandef,
 840                                         IEEE80211_CHANCTX_EXCLUSIVE);
 841                 }
 842         } else if (local->open_count == local->monitors) {
 843                 local->_oper_chandef = *chandef;
 844                 ieee80211_hw_config(local, 0);
 845         }
 846
 847         if (ret == 0)
 848                 local->monitor_chandef = *chandef;
 849         mutex_unlock(&local->iflist_mtx);
 850         mutex_unlock(&local->mtx);
 851
 852         return ret;
 853 }
 854
 855 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 856                                     const u8 *resp, size_t resp_len)
 857 {
 858         struct probe_resp *new, *old;
 859
 860         if (!resp || !resp_len)
 861                 return 1;
 862
 863         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 864
 865         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 866         if (!new)
 867                 return -ENOMEM;
 868
 869         new->len = resp_len;
 870         memcpy(new->data, resp, resp_len);
 871
 872         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 873         if (old)
 874                 kfree_rcu(old, rcu_head);
 875
 876         return 0;
 877 }
 878
 879 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 880                                    struct cfg80211_beacon_data *params)
 881 {
 882         struct beacon_data *new, *old;
 883         int new_head_len, new_tail_len;
 884         int size, err;
 885         u32 changed = BSS_CHANGED_BEACON;
 886
 887         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 888
 889
 890         /* Need to have a beacon head if we don't have one yet */
 891         if (!params->head && !old)
 892                 return -EINVAL;
 893
 894         /* new or old head? */
 895         if (params->head)
 896                 new_head_len = params->head_len;
 897         else
 898                 new_head_len = old->head_len;
 899
 900         /* new or old tail? */
 901         if (params->tail || !old)
 902                 /* params->tail_len will be zero for !params->tail */
 903                 new_tail_len = params->tail_len;
 904         else
 905                 new_tail_len = old->tail_len;
 906
 907         size = sizeof(*new) + new_head_len + new_tail_len;
 908
 909         new = kzalloc(size, GFP_KERNEL);
 910         if (!new)
 911                 return -ENOMEM;
 912
 913         /* start filling the new info now */
 914
 915         /*
 916          * pointers go into the block we allocated,
 917          * memory is | beacon_data | head | tail |
 918          */
 919         new->head = ((u8 *) new) + sizeof(*new);
 920         new->tail = new->head + new_head_len;
 921         new->head_len = new_head_len;
 922         new->tail_len = new_tail_len;
 923
 924         /* copy in head */
 925         if (params->head)
 926                 memcpy(new->head, params->head, new_head_len);
 927         else
 928                 memcpy(new->head, old->head, new_head_len);
 929
 930         /* copy in optional tail */
 931         if (params->tail)
 932                 memcpy(new->tail, params->tail, new_tail_len);
 933         else
 934                 if (old)
 935                         memcpy(new->tail, old->tail, new_tail_len);
 936
 937         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 938                                        params->probe_resp_len);
 939         if (err < 0)
 940                 return err;
 941         if (err == 0)
 942                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 943
 944         rcu_assign_pointer(sdata->u.ap.beacon, new);
 945
 946         if (old)
 947                 kfree_rcu(old, rcu_head);
 948
 949         return changed;
 950 }
 951
 952 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 953                               struct cfg80211_ap_settings *params)
 954 {
 955         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 956         struct ieee80211_local *local = sdata->local;
 957         struct beacon_data *old;
 958         struct ieee80211_sub_if_data *vlan;
 959         u32 changed = BSS_CHANGED_BEACON_INT |
 960                       BSS_CHANGED_BEACON_ENABLED |
 961                       BSS_CHANGED_BEACON |
 962                       BSS_CHANGED_SSID |
 963                       BSS_CHANGED_P2P_PS;
 964         int err;
 965
 966         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 967         if (old)
 968                 return -EALREADY;
 969
 970         /* TODO: make hostapd tell us what it wants */
 971         sdata->smps_mode = IEEE80211_SMPS_OFF;
 972         sdata->needed_rx_chains = sdata->local->rx_chains;
 973         sdata->radar_required = params->radar_required;
 974
 975         mutex_lock(&local->mtx);
 976         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 977                                         IEEE80211_CHANCTX_SHARED);
 978         mutex_unlock(&local->mtx);
 979         if (err)
 980                 return err;
 981         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 982
 983         /*
 984          * Apply control port protocol, this allows us to
 985          * not encrypt dynamic WEP control frames.
 986          */
 987         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 988         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 989         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 990                                                         &params->crypto,
 991                                                         sdata->vif.type);
 992
 993         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 994                 vlan->control_port_protocol =
 995                         params->crypto.control_port_ethertype;
 996                 vlan->control_port_no_encrypt =
 997                         params->crypto.control_port_no_encrypt;
 998                 vlan->encrypt_headroom =
 999                         ieee80211_cs_headroom(sdata->local,
1000                                               &params->crypto,
1001                                               vlan->vif.type);
1002         }
1003
1004         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1005         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1006         sdata->vif.bss_conf.enable_beacon = true;
1007
1008         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1009         if (params->ssid_len)
1010                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1011                        params->ssid_len);
1012         sdata->vif.bss_conf.hidden_ssid =
1013                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1014
1015         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1016                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1017         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1018                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1019         if (params->p2p_opp_ps)
1020                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1021                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1022
1023         err = ieee80211_assign_beacon(sdata, &params->beacon);
1024         if (err < 0)
1025                 return err;
1026         changed |= err;
1027
1028         err = drv_start_ap(sdata->local, sdata);
1029         if (err) {
1030                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1031
1032                 if (old)
1033                         kfree_rcu(old, rcu_head);
1034                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1035                 return err;
1036         }
1037
1038         ieee80211_recalc_dtim(local, sdata);
1039         ieee80211_bss_info_change_notify(sdata, changed);
1040
1041         netif_carrier_on(dev);
1042         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1043                 netif_carrier_on(vlan->dev);
1044
1045         return 0;
1046 }
1047
1048 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1049                                    struct cfg80211_beacon_data *params)
1050 {
1051         struct ieee80211_sub_if_data *sdata;
1052         struct beacon_data *old;
1053         int err;
1054
1055         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1056
1057         /* don't allow changing the beacon while CSA is in place - offset
1058          * of channel switch counter may change
1059          */
1060         if (sdata->vif.csa_active)
1061                 return -EBUSY;
1062
1063         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1064         if (!old)
1065                 return -ENOENT;
1066
1067         err = ieee80211_assign_beacon(sdata, params);
1068         if (err < 0)
1069                 return err;
1070         ieee80211_bss_info_change_notify(sdata, err);
1071         return 0;
1072 }
1073
1074 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1075 {
1076         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1077         struct ieee80211_sub_if_data *vlan;
1078         struct ieee80211_local *local = sdata->local;
1079         struct beacon_data *old_beacon;
1080         struct probe_resp *old_probe_resp;
1081         struct cfg80211_chan_def chandef;
1082
1083         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1084         if (!old_beacon)
1085                 return -ENOENT;
1086         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1087
1088         /* abort any running channel switch */
1089         sdata->vif.csa_active = false;
1090         kfree(sdata->u.ap.next_beacon);
1091         sdata->u.ap.next_beacon = NULL;
1092
1093         cancel_work_sync(&sdata->u.ap.request_smps_work);
1094
1095         /* turn off carrier for this interface and dependent VLANs */
1096         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1097                 netif_carrier_off(vlan->dev);
1098         netif_carrier_off(dev);
1099
1100         /* remove beacon and probe response */
1101         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1102         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1103         kfree_rcu(old_beacon, rcu_head);
1104         if (old_probe_resp)
1105                 kfree_rcu(old_probe_resp, rcu_head);
1106
1107         __sta_info_flush(sdata, true);
1108         ieee80211_free_keys(sdata, true);
1109
1110         sdata->vif.bss_conf.enable_beacon = false;
1111         sdata->vif.bss_conf.ssid_len = 0;
1112         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1113         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1114
1115         if (sdata->wdev.cac_started) {
1116                 chandef = sdata->vif.bss_conf.chandef;
1117                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1118                 cfg80211_cac_event(sdata->dev, &chandef,
1119                                    NL80211_RADAR_CAC_ABORTED,
1120                                    GFP_KERNEL);
1121         }
1122
1123         drv_stop_ap(sdata->local, sdata);
1124
1125         /* free all potentially still buffered bcast frames */
1126         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1127         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1128
1129         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1130         mutex_lock(&local->mtx);
1131         ieee80211_vif_release_channel(sdata);
1132         mutex_unlock(&local->mtx);
1133
1134         return 0;
1135 }
1136
1137 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1138 struct iapp_layer2_update {
1139         u8 da[ETH_ALEN];        /* broadcast */
1140         u8 sa[ETH_ALEN];        /* STA addr */
1141         __be16 len;             /* 6 */
1142         u8 dsap;                /* 0 */
1143         u8 ssap;                /* 0 */
1144         u8 control;
1145         u8 xid_info[3];
1146 } __packed;
1147
1148 static void ieee80211_send_layer2_update(struct sta_info *sta)
1149 {
1150         struct iapp_layer2_update *msg;
1151         struct sk_buff *skb;
1152
1153         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1154          * bridge devices */
1155
1156         skb = dev_alloc_skb(sizeof(*msg));
1157         if (!skb)
1158                 return;
1159         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1160
1161         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1162          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1163
1164         eth_broadcast_addr(msg->da);
1165         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1166         msg->len = htons(6);
1167         msg->dsap = 0;
1168         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1169         msg->control = 0xaf;    /* XID response lsb.1111F101.
1170                                  * F=0 (no poll command; unsolicited frame) */
1171         msg->xid_info[0] = 0x81;        /* XID format identifier */
1172         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1173         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1174
1175         skb->dev = sta->sdata->dev;
1176         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1177         memset(skb->cb, 0, sizeof(skb->cb));
1178         netif_rx_ni(skb);
1179 }
1180
1181 static int sta_apply_auth_flags(struct ieee80211_local *local,
1182                                 struct sta_info *sta,
1183                                 u32 mask, u32 set)
1184 {
1185         int ret;
1186
1187         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1188             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1189             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1190                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1191                 if (ret)
1192                         return ret;
1193         }
1194
1195         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1196             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1197             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1198                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1199                 if (ret)
1200                         return ret;
1201         }
1202
1203         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1204                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1205                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1206                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1207                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1208                 else
1209                         ret = 0;
1210                 if (ret)
1211                         return ret;
1212         }
1213
1214         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1215             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1216             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1217                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1218                 if (ret)
1219                         return ret;
1220         }
1221
1222         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1223             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1224             test_sta_flag(sta, WLAN_STA_AUTH)) {
1225                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1226                 if (ret)
1227                         return ret;
1228         }
1229
1230         return 0;
1231 }
1232
1233 static int sta_apply_parameters(struct ieee80211_local *local,
1234                                 struct sta_info *sta,
1235                                 struct station_parameters *params)
1236 {
1237         int ret = 0;
1238         struct ieee80211_supported_band *sband;
1239         struct ieee80211_sub_if_data *sdata = sta->sdata;
1240         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1241         u32 mask, set;
1242
1243         sband = local->hw.wiphy->bands[band];
1244
1245         mask = params->sta_flags_mask;
1246         set = params->sta_flags_set;
1247
1248         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1249                 /*
1250                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1251                  * API but must follow AUTHENTICATED for driver state.
1252                  */
1253                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1254                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1255                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1256                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1257         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1258                 /*
1259                  * TDLS -- everything follows authorized, but
1260                  * only becoming authorized is possible, not
1261                  * going back
1262                  */
1263                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1264                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1265                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1266                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1267                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1268                 }
1269         }
1270
1271         ret = sta_apply_auth_flags(local, sta, mask, set);
1272         if (ret)
1273                 return ret;
1274
1275         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1276                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1277                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1278                 else
1279                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1280         }
1281
1282         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1283                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1284                         set_sta_flag(sta, WLAN_STA_WME);
1285                         sta->sta.wme = true;
1286                 } else {
1287                         clear_sta_flag(sta, WLAN_STA_WME);
1288                         sta->sta.wme = false;
1289                 }
1290         }
1291
1292         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1293                 if (set & BIT(NL80211_STA_FLAG_MFP))
1294                         set_sta_flag(sta, WLAN_STA_MFP);
1295                 else
1296                         clear_sta_flag(sta, WLAN_STA_MFP);
1297         }
1298
1299         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1300                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1301                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1302                 else
1303                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1304         }
1305
1306         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1307                 sta->sta.uapsd_queues = params->uapsd_queues;
1308                 sta->sta.max_sp = params->max_sp;
1309         }
1310
1311         /*
1312          * cfg80211 validates this (1-2007) and allows setting the AID
1313          * only when creating a new station entry
1314          */
1315         if (params->aid)
1316                 sta->sta.aid = params->aid;
1317
1318         /*
1319          * Some of the following updates would be racy if called on an
1320          * existing station, via ieee80211_change_station(). However,
1321          * all such changes are rejected by cfg80211 except for updates
1322          * changing the supported rates on an existing but not yet used
1323          * TDLS peer.
1324          */
1325
1326         if (params->listen_interval >= 0)
1327                 sta->listen_interval = params->listen_interval;
1328
1329         if (params->supported_rates) {
1330                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1331                                          sband, params->supported_rates,
1332                                          params->supported_rates_len,
1333                                          &sta->sta.supp_rates[band]);
1334         }
1335
1336         if (params->ht_capa)
1337                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1338                                                   params->ht_capa, sta);
1339
1340         if (params->vht_capa)
1341                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1342                                                     params->vht_capa, sta);
1343
1344         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1345 #ifdef CONFIG_MAC80211_MESH
1346                 u32 changed = 0;
1347
1348                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1349                         switch (params->plink_state) {
1350                         case NL80211_PLINK_ESTAB:
1351                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1352                                         changed = mesh_plink_inc_estab_count(
1353                                                         sdata);
1354                                 sta->plink_state = params->plink_state;
1355
1356                                 ieee80211_mps_sta_status_update(sta);
1357                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1358                                               sdata->u.mesh.mshcfg.power_mode);
1359                                 break;
1360                         case NL80211_PLINK_LISTEN:
1361                         case NL80211_PLINK_BLOCKED:
1362                         case NL80211_PLINK_OPN_SNT:
1363                         case NL80211_PLINK_OPN_RCVD:
1364                         case NL80211_PLINK_CNF_RCVD:
1365                         case NL80211_PLINK_HOLDING:
1366                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1367                                         changed = mesh_plink_dec_estab_count(
1368                                                         sdata);
1369                                 sta->plink_state = params->plink_state;
1370
1371                                 ieee80211_mps_sta_status_update(sta);
1372                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1373                                                 NL80211_MESH_POWER_UNKNOWN);
1374                                 break;
1375                         default:
1376                                 /*  nothing  */
1377                                 break;
1378                         }
1379                 }
1380
1381                 switch (params->plink_action) {
1382                 case NL80211_PLINK_ACTION_NO_ACTION:
1383                         /* nothing */
1384                         break;
1385                 case NL80211_PLINK_ACTION_OPEN:
1386                         changed |= mesh_plink_open(sta);
1387                         break;
1388                 case NL80211_PLINK_ACTION_BLOCK:
1389                         changed |= mesh_plink_block(sta);
1390                         break;
1391                 }
1392
1393                 if (params->local_pm)
1394                         changed |=
1395                               ieee80211_mps_set_sta_local_pm(sta,
1396                                                              params->local_pm);
1397                 ieee80211_mbss_info_change_notify(sdata, changed);
1398 #endif
1399         }
1400
1401         return 0;
1402 }
1403
1404 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1405                                  u8 *mac, struct station_parameters *params)
1406 {
1407         struct ieee80211_local *local = wiphy_priv(wiphy);
1408         struct sta_info *sta;
1409         struct ieee80211_sub_if_data *sdata;
1410         int err;
1411         int layer2_update;
1412
1413         if (params->vlan) {
1414                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1415
1416                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1417                     sdata->vif.type != NL80211_IFTYPE_AP)
1418                         return -EINVAL;
1419         } else
1420                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1421
1422         if (ether_addr_equal(mac, sdata->vif.addr))
1423                 return -EINVAL;
1424
1425         if (is_multicast_ether_addr(mac))
1426                 return -EINVAL;
1427
1428         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1429         if (!sta)
1430                 return -ENOMEM;
1431
1432         /*
1433          * defaults -- if userspace wants something else we'll
1434          * change it accordingly in sta_apply_parameters()
1435          */
1436         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1437                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1438                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1439         }
1440
1441         err = sta_apply_parameters(local, sta, params);
1442         if (err) {
1443                 sta_info_free(local, sta);
1444                 return err;
1445         }
1446
1447         /*
1448          * for TDLS, rate control should be initialized only when
1449          * rates are known and station is marked authorized
1450          */
1451         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1452                 rate_control_rate_init(sta);
1453
1454         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1455                 sdata->vif.type == NL80211_IFTYPE_AP;
1456
1457         err = sta_info_insert_rcu(sta);
1458         if (err) {
1459                 rcu_read_unlock();
1460                 return err;
1461         }
1462
1463         if (layer2_update)
1464                 ieee80211_send_layer2_update(sta);
1465
1466         rcu_read_unlock();
1467
1468         return 0;
1469 }
1470
1471 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1472                                  u8 *mac)
1473 {
1474         struct ieee80211_sub_if_data *sdata;
1475
1476         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1477
1478         if (mac)
1479                 return sta_info_destroy_addr_bss(sdata, mac);
1480
1481         sta_info_flush(sdata);
1482         return 0;
1483 }
1484
1485 static int ieee80211_change_station(struct wiphy *wiphy,
1486                                     struct net_device *dev, u8 *mac,
1487                                     struct station_parameters *params)
1488 {
1489         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1490         struct ieee80211_local *local = wiphy_priv(wiphy);
1491         struct sta_info *sta;
1492         struct ieee80211_sub_if_data *vlansdata;
1493         enum cfg80211_station_type statype;
1494         int err;
1495
1496         mutex_lock(&local->sta_mtx);
1497
1498         sta = sta_info_get_bss(sdata, mac);
1499         if (!sta) {
1500                 err = -ENOENT;
1501                 goto out_err;
1502         }
1503
1504         switch (sdata->vif.type) {
1505         case NL80211_IFTYPE_MESH_POINT:
1506                 if (sdata->u.mesh.user_mpm)
1507                         statype = CFG80211_STA_MESH_PEER_USER;
1508                 else
1509                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1510                 break;
1511         case NL80211_IFTYPE_ADHOC:
1512                 statype = CFG80211_STA_IBSS;
1513                 break;
1514         case NL80211_IFTYPE_STATION:
1515                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1516                         statype = CFG80211_STA_AP_STA;
1517                         break;
1518                 }
1519                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1520                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1521                 else
1522                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1523                 break;
1524         case NL80211_IFTYPE_AP:
1525         case NL80211_IFTYPE_AP_VLAN:
1526                 statype = CFG80211_STA_AP_CLIENT;
1527                 break;
1528         default:
1529                 err = -EOPNOTSUPP;
1530                 goto out_err;
1531         }
1532
1533         err = cfg80211_check_station_change(wiphy, params, statype);
1534         if (err)
1535                 goto out_err;
1536
1537         if (params->vlan && params->vlan != sta->sdata->dev) {
1538                 bool prev_4addr = false;
1539                 bool new_4addr = false;
1540
1541                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1542
1543                 if (params->vlan->ieee80211_ptr->use_4addr) {
1544                         if (vlansdata->u.vlan.sta) {
1545                                 err = -EBUSY;
1546                                 goto out_err;
1547                         }
1548
1549                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1550                         new_4addr = true;
1551                 }
1552
1553                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1554                     sta->sdata->u.vlan.sta) {
1555                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1556                         prev_4addr = true;
1557                 }
1558
1559                 sta->sdata = vlansdata;
1560
1561                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1562                     prev_4addr != new_4addr) {
1563                         if (new_4addr)
1564                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1565                         else
1566                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1567                 }
1568
1569                 ieee80211_send_layer2_update(sta);
1570         }
1571
1572         err = sta_apply_parameters(local, sta, params);
1573         if (err)
1574                 goto out_err;
1575
1576         /* When peer becomes authorized, init rate control as well */
1577         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1578             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1579                 rate_control_rate_init(sta);
1580
1581         mutex_unlock(&local->sta_mtx);
1582
1583         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1584              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1585             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1586             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1587             sta_info_tx_streams(sta) != 1) {
1588                 ht_dbg(sta->sdata,
1589                        "%pM just authorized and MIMO capable - update SMPS\n",
1590                        sta->sta.addr);
1591                 ieee80211_send_smps_action(sta->sdata,
1592                         sta->sdata->bss->req_smps,
1593                         sta->sta.addr,
1594                         sta->sdata->vif.bss_conf.bssid);
1595         }
1596
1597         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1598             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1599                 ieee80211_recalc_ps(local, -1);
1600                 ieee80211_recalc_ps_vif(sdata);
1601         }
1602
1603         return 0;
1604 out_err:
1605         mutex_unlock(&local->sta_mtx);
1606         return err;
1607 }
1608
1609 #ifdef CONFIG_MAC80211_MESH
1610 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1611                                  u8 *dst, u8 *next_hop)
1612 {
1613         struct ieee80211_sub_if_data *sdata;
1614         struct mesh_path *mpath;
1615         struct sta_info *sta;
1616
1617         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1618
1619         rcu_read_lock();
1620         sta = sta_info_get(sdata, next_hop);
1621         if (!sta) {
1622                 rcu_read_unlock();
1623                 return -ENOENT;
1624         }
1625
1626         mpath = mesh_path_add(sdata, dst);
1627         if (IS_ERR(mpath)) {
1628                 rcu_read_unlock();
1629                 return PTR_ERR(mpath);
1630         }
1631
1632         mesh_path_fix_nexthop(mpath, sta);
1633
1634         rcu_read_unlock();
1635         return 0;
1636 }
1637
1638 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1639                                u8 *dst)
1640 {
1641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1642
1643         if (dst)
1644                 return mesh_path_del(sdata, dst);
1645
1646         mesh_path_flush_by_iface(sdata);
1647         return 0;
1648 }
1649
1650 static int ieee80211_change_mpath(struct wiphy *wiphy,
1651                                     struct net_device *dev,
1652                                     u8 *dst, u8 *next_hop)
1653 {
1654         struct ieee80211_sub_if_data *sdata;
1655         struct mesh_path *mpath;
1656         struct sta_info *sta;
1657
1658         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1659
1660         rcu_read_lock();
1661
1662         sta = sta_info_get(sdata, next_hop);
1663         if (!sta) {
1664                 rcu_read_unlock();
1665                 return -ENOENT;
1666         }
1667
1668         mpath = mesh_path_lookup(sdata, dst);
1669         if (!mpath) {
1670                 rcu_read_unlock();
1671                 return -ENOENT;
1672         }
1673
1674         mesh_path_fix_nexthop(mpath, sta);
1675
1676         rcu_read_unlock();
1677         return 0;
1678 }
1679
1680 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1681                             struct mpath_info *pinfo)
1682 {
1683         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1684
1685         if (next_hop_sta)
1686                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1687         else
1688                 memset(next_hop, 0, ETH_ALEN);
1689
1690         memset(pinfo, 0, sizeof(*pinfo));
1691
1692         pinfo->generation = mesh_paths_generation;
1693
1694         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1695                         MPATH_INFO_SN |
1696                         MPATH_INFO_METRIC |
1697                         MPATH_INFO_EXPTIME |
1698                         MPATH_INFO_DISCOVERY_TIMEOUT |
1699                         MPATH_INFO_DISCOVERY_RETRIES |
1700                         MPATH_INFO_FLAGS;
1701
1702         pinfo->frame_qlen = mpath->frame_queue.qlen;
1703         pinfo->sn = mpath->sn;
1704         pinfo->metric = mpath->metric;
1705         if (time_before(jiffies, mpath->exp_time))
1706                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1707         pinfo->discovery_timeout =
1708                         jiffies_to_msecs(mpath->discovery_timeout);
1709         pinfo->discovery_retries = mpath->discovery_retries;
1710         if (mpath->flags & MESH_PATH_ACTIVE)
1711                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1712         if (mpath->flags & MESH_PATH_RESOLVING)
1713                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1714         if (mpath->flags & MESH_PATH_SN_VALID)
1715                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1716         if (mpath->flags & MESH_PATH_FIXED)
1717                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1718         if (mpath->flags & MESH_PATH_RESOLVED)
1719                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1720 }
1721
1722 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1723                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1724
1725 {
1726         struct ieee80211_sub_if_data *sdata;
1727         struct mesh_path *mpath;
1728
1729         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730
1731         rcu_read_lock();
1732         mpath = mesh_path_lookup(sdata, dst);
1733         if (!mpath) {
1734                 rcu_read_unlock();
1735                 return -ENOENT;
1736         }
1737         memcpy(dst, mpath->dst, ETH_ALEN);
1738         mpath_set_pinfo(mpath, next_hop, pinfo);
1739         rcu_read_unlock();
1740         return 0;
1741 }
1742
1743 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1744                                  int idx, u8 *dst, u8 *next_hop,
1745                                  struct mpath_info *pinfo)
1746 {
1747         struct ieee80211_sub_if_data *sdata;
1748         struct mesh_path *mpath;
1749
1750         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1751
1752         rcu_read_lock();
1753         mpath = mesh_path_lookup_by_idx(sdata, idx);
1754         if (!mpath) {
1755                 rcu_read_unlock();
1756                 return -ENOENT;
1757         }
1758         memcpy(dst, mpath->dst, ETH_ALEN);
1759         mpath_set_pinfo(mpath, next_hop, pinfo);
1760         rcu_read_unlock();
1761         return 0;
1762 }
1763
1764 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1765                                 struct net_device *dev,
1766                                 struct mesh_config *conf)
1767 {
1768         struct ieee80211_sub_if_data *sdata;
1769         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1770
1771         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1772         return 0;
1773 }
1774
1775 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1776 {
1777         return (mask >> (parm-1)) & 0x1;
1778 }
1779
1780 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1781                 const struct mesh_setup *setup)
1782 {
1783         u8 *new_ie;
1784         const u8 *old_ie;
1785         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1786                                         struct ieee80211_sub_if_data, u.mesh);
1787
1788         /* allocate information elements */
1789         new_ie = NULL;
1790         old_ie = ifmsh->ie;
1791
1792         if (setup->ie_len) {
1793                 new_ie = kmemdup(setup->ie, setup->ie_len,
1794                                 GFP_KERNEL);
1795                 if (!new_ie)
1796                         return -ENOMEM;
1797         }
1798         ifmsh->ie_len = setup->ie_len;
1799         ifmsh->ie = new_ie;
1800         kfree(old_ie);
1801
1802         /* now copy the rest of the setup parameters */
1803         ifmsh->mesh_id_len = setup->mesh_id_len;
1804         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1805         ifmsh->mesh_sp_id = setup->sync_method;
1806         ifmsh->mesh_pp_id = setup->path_sel_proto;
1807         ifmsh->mesh_pm_id = setup->path_metric;
1808         ifmsh->user_mpm = setup->user_mpm;
1809         ifmsh->mesh_auth_id = setup->auth_id;
1810         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1811         if (setup->is_authenticated)
1812                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1813         if (setup->is_secure)
1814                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1815
1816         /* mcast rate setting in Mesh Node */
1817         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1818                                                 sizeof(setup->mcast_rate));
1819         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1820
1821         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1822         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1823
1824         return 0;
1825 }
1826
1827 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1828                                         struct net_device *dev, u32 mask,
1829                                         const struct mesh_config *nconf)
1830 {
1831         struct mesh_config *conf;
1832         struct ieee80211_sub_if_data *sdata;
1833         struct ieee80211_if_mesh *ifmsh;
1834
1835         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836         ifmsh = &sdata->u.mesh;
1837
1838         /* Set the config options which we are interested in setting */
1839         conf = &(sdata->u.mesh.mshcfg);
1840         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1841                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1842         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1843                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1844         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1845                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1846         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1847                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1848         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1849                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1850         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1851                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1852         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1853                 conf->element_ttl = nconf->element_ttl;
1854         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1855                 if (ifmsh->user_mpm)
1856                         return -EBUSY;
1857                 conf->auto_open_plinks = nconf->auto_open_plinks;
1858         }
1859         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1860                 conf->dot11MeshNbrOffsetMaxNeighbor =
1861                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1862         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1863                 conf->dot11MeshHWMPmaxPREQretries =
1864                         nconf->dot11MeshHWMPmaxPREQretries;
1865         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1866                 conf->path_refresh_time = nconf->path_refresh_time;
1867         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1868                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1869         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1870                 conf->dot11MeshHWMPactivePathTimeout =
1871                         nconf->dot11MeshHWMPactivePathTimeout;
1872         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1873                 conf->dot11MeshHWMPpreqMinInterval =
1874                         nconf->dot11MeshHWMPpreqMinInterval;
1875         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1876                 conf->dot11MeshHWMPperrMinInterval =
1877                         nconf->dot11MeshHWMPperrMinInterval;
1878         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1879                            mask))
1880                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1881                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1882         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1883                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1884                 ieee80211_mesh_root_setup(ifmsh);
1885         }
1886         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1887                 /* our current gate announcement implementation rides on root
1888                  * announcements, so require this ifmsh to also be a root node
1889                  * */
1890                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1891                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1892                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1893                         ieee80211_mesh_root_setup(ifmsh);
1894                 }
1895                 conf->dot11MeshGateAnnouncementProtocol =
1896                         nconf->dot11MeshGateAnnouncementProtocol;
1897         }
1898         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1899                 conf->dot11MeshHWMPRannInterval =
1900                         nconf->dot11MeshHWMPRannInterval;
1901         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1902                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1903         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1904                 /* our RSSI threshold implementation is supported only for
1905                  * devices that report signal in dBm.
1906                  */
1907                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1908                         return -ENOTSUPP;
1909                 conf->rssi_threshold = nconf->rssi_threshold;
1910         }
1911         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1912                 conf->ht_opmode = nconf->ht_opmode;
1913                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1914                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1915         }
1916         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1917                 conf->dot11MeshHWMPactivePathToRootTimeout =
1918                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1919         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1920                 conf->dot11MeshHWMProotInterval =
1921                         nconf->dot11MeshHWMProotInterval;
1922         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1923                 conf->dot11MeshHWMPconfirmationInterval =
1924                         nconf->dot11MeshHWMPconfirmationInterval;
1925         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1926                 conf->power_mode = nconf->power_mode;
1927                 ieee80211_mps_local_status_update(sdata);
1928         }
1929         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1930                 conf->dot11MeshAwakeWindowDuration =
1931                         nconf->dot11MeshAwakeWindowDuration;
1932         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1933                 conf->plink_timeout = nconf->plink_timeout;
1934         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1935         return 0;
1936 }
1937
1938 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1939                                const struct mesh_config *conf,
1940                                const struct mesh_setup *setup)
1941 {
1942         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1943         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1944         int err;
1945
1946         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1947         err = copy_mesh_setup(ifmsh, setup);
1948         if (err)
1949                 return err;
1950
1951         /* can mesh use other SMPS modes? */
1952         sdata->smps_mode = IEEE80211_SMPS_OFF;
1953         sdata->needed_rx_chains = sdata->local->rx_chains;
1954
1955         mutex_lock(&sdata->local->mtx);
1956         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1957                                         IEEE80211_CHANCTX_SHARED);
1958         mutex_unlock(&sdata->local->mtx);
1959         if (err)
1960                 return err;
1961
1962         return ieee80211_start_mesh(sdata);
1963 }
1964
1965 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1966 {
1967         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1968
1969         ieee80211_stop_mesh(sdata);
1970         mutex_lock(&sdata->local->mtx);
1971         ieee80211_vif_release_channel(sdata);
1972         mutex_unlock(&sdata->local->mtx);
1973
1974         return 0;
1975 }
1976 #endif
1977
1978 static int ieee80211_change_bss(struct wiphy *wiphy,
1979                                 struct net_device *dev,
1980                                 struct bss_parameters *params)
1981 {
1982         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1983         enum ieee80211_band band;
1984         u32 changed = 0;
1985
1986         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1987                 return -ENOENT;
1988
1989         band = ieee80211_get_sdata_band(sdata);
1990
1991         if (params->use_cts_prot >= 0) {
1992                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1993                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1994         }
1995         if (params->use_short_preamble >= 0) {
1996                 sdata->vif.bss_conf.use_short_preamble =
1997                         params->use_short_preamble;
1998                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1999         }
2000
2001         if (!sdata->vif.bss_conf.use_short_slot &&
2002             band == IEEE80211_BAND_5GHZ) {
2003                 sdata->vif.bss_conf.use_short_slot = true;
2004                 changed |= BSS_CHANGED_ERP_SLOT;
2005         }
2006
2007         if (params->use_short_slot_time >= 0) {
2008                 sdata->vif.bss_conf.use_short_slot =
2009                         params->use_short_slot_time;
2010                 changed |= BSS_CHANGED_ERP_SLOT;
2011         }
2012
2013         if (params->basic_rates) {
2014                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2015                                          wiphy->bands[band],
2016                                          params->basic_rates,
2017                                          params->basic_rates_len,
2018                                          &sdata->vif.bss_conf.basic_rates);
2019                 changed |= BSS_CHANGED_BASIC_RATES;
2020         }
2021
2022         if (params->ap_isolate >= 0) {
2023                 if (params->ap_isolate)
2024                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2025                 else
2026                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2027         }
2028
2029         if (params->ht_opmode >= 0) {
2030                 sdata->vif.bss_conf.ht_operation_mode =
2031                         (u16) params->ht_opmode;
2032                 changed |= BSS_CHANGED_HT;
2033         }
2034
2035         if (params->p2p_ctwindow >= 0) {
2036                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2037                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2038                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2039                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2040                 changed |= BSS_CHANGED_P2P_PS;
2041         }
2042
2043         if (params->p2p_opp_ps > 0) {
2044                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2045                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2046                 changed |= BSS_CHANGED_P2P_PS;
2047         } else if (params->p2p_opp_ps == 0) {
2048                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2049                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2050                 changed |= BSS_CHANGED_P2P_PS;
2051         }
2052
2053         ieee80211_bss_info_change_notify(sdata, changed);
2054
2055         return 0;
2056 }
2057
2058 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2059                                     struct net_device *dev,
2060                                     struct ieee80211_txq_params *params)
2061 {
2062         struct ieee80211_local *local = wiphy_priv(wiphy);
2063         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2064         struct ieee80211_tx_queue_params p;
2065
2066         if (!local->ops->conf_tx)
2067                 return -EOPNOTSUPP;
2068
2069         if (local->hw.queues < IEEE80211_NUM_ACS)
2070                 return -EOPNOTSUPP;
2071
2072         memset(&p, 0, sizeof(p));
2073         p.aifs = params->aifs;
2074         p.cw_max = params->cwmax;
2075         p.cw_min = params->cwmin;
2076         p.txop = params->txop;
2077
2078         /*
2079          * Setting tx queue params disables u-apsd because it's only
2080          * called in master mode.
2081          */
2082         p.uapsd = false;
2083
2084         sdata->tx_conf[params->ac] = p;
2085         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2086                 wiphy_debug(local->hw.wiphy,
2087                             "failed to set TX queue parameters for AC %d\n",
2088                             params->ac);
2089                 return -EINVAL;
2090         }
2091
2092         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2093
2094         return 0;
2095 }
2096
2097 #ifdef CONFIG_PM
2098 static int ieee80211_suspend(struct wiphy *wiphy,
2099                              struct cfg80211_wowlan *wowlan)
2100 {
2101         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2102 }
2103
2104 static int ieee80211_resume(struct wiphy *wiphy)
2105 {
2106         return __ieee80211_resume(wiphy_priv(wiphy));
2107 }
2108 #else
2109 #define ieee80211_suspend NULL
2110 #define ieee80211_resume NULL
2111 #endif
2112
2113 static int ieee80211_scan(struct wiphy *wiphy,
2114                           struct cfg80211_scan_request *req)
2115 {
2116         struct ieee80211_sub_if_data *sdata;
2117
2118         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2119
2120         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2121         case NL80211_IFTYPE_STATION:
2122         case NL80211_IFTYPE_ADHOC:
2123         case NL80211_IFTYPE_MESH_POINT:
2124         case NL80211_IFTYPE_P2P_CLIENT:
2125         case NL80211_IFTYPE_P2P_DEVICE:
2126                 break;
2127         case NL80211_IFTYPE_P2P_GO:
2128                 if (sdata->local->ops->hw_scan)
2129                         break;
2130                 /*
2131                  * FIXME: implement NoA while scanning in software,
2132                  * for now fall through to allow scanning only when
2133                  * beaconing hasn't been configured yet
2134                  */
2135         case NL80211_IFTYPE_AP:
2136                 /*
2137                  * If the scan has been forced (and the driver supports
2138                  * forcing), don't care about being beaconing already.
2139                  * This will create problems to the attached stations (e.g. all
2140                  * the  frames sent while scanning on other channel will be
2141                  * lost)
2142                  */
2143                 if (sdata->u.ap.beacon &&
2144                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2145                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2146                         return -EOPNOTSUPP;
2147                 break;
2148         default:
2149                 return -EOPNOTSUPP;
2150         }
2151
2152         return ieee80211_request_scan(sdata, req);
2153 }
2154
2155 static int
2156 ieee80211_sched_scan_start(struct wiphy *wiphy,
2157                            struct net_device *dev,
2158                            struct cfg80211_sched_scan_request *req)
2159 {
2160         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2161
2162         if (!sdata->local->ops->sched_scan_start)
2163                 return -EOPNOTSUPP;
2164
2165         return ieee80211_request_sched_scan_start(sdata, req);
2166 }
2167
2168 static int
2169 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2170 {
2171         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2172
2173         if (!sdata->local->ops->sched_scan_stop)
2174                 return -EOPNOTSUPP;
2175
2176         return ieee80211_request_sched_scan_stop(sdata);
2177 }
2178
2179 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2180                           struct cfg80211_auth_request *req)
2181 {
2182         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2183 }
2184
2185 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2186                            struct cfg80211_assoc_request *req)
2187 {
2188         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2189 }
2190
2191 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2192                             struct cfg80211_deauth_request *req)
2193 {
2194         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2195 }
2196
2197 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2198                               struct cfg80211_disassoc_request *req)
2199 {
2200         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2201 }
2202
2203 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2204                                struct cfg80211_ibss_params *params)
2205 {
2206         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2207 }
2208
2209 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2210 {
2211         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2212 }
2213
2214 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2215                                     int rate[IEEE80211_NUM_BANDS])
2216 {
2217         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2218
2219         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2220                sizeof(int) * IEEE80211_NUM_BANDS);
2221
2222         return 0;
2223 }
2224
2225 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2226 {
2227         struct ieee80211_local *local = wiphy_priv(wiphy);
2228         int err;
2229
2230         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2231                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2232
2233                 if (err)
2234                         return err;
2235         }
2236
2237         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2238                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2239
2240                 if (err)
2241                         return err;
2242         }
2243
2244         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2245                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2246
2247                 if (err)
2248                         return err;
2249         }
2250
2251         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2252                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2253                         return -EINVAL;
2254                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2255         }
2256         if (changed & WIPHY_PARAM_RETRY_LONG) {
2257                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2258                         return -EINVAL;
2259                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2260         }
2261         if (changed &
2262             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2263                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2264
2265         return 0;
2266 }
2267
2268 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2269                                   struct wireless_dev *wdev,
2270                                   enum nl80211_tx_power_setting type, int mbm)
2271 {
2272         struct ieee80211_local *local = wiphy_priv(wiphy);
2273         struct ieee80211_sub_if_data *sdata;
2274
2275         if (wdev) {
2276                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2277
2278                 switch (type) {
2279                 case NL80211_TX_POWER_AUTOMATIC:
2280                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2281                         break;
2282                 case NL80211_TX_POWER_LIMITED:
2283                 case NL80211_TX_POWER_FIXED:
2284                         if (mbm < 0 || (mbm % 100))
2285                                 return -EOPNOTSUPP;
2286                         sdata->user_power_level = MBM_TO_DBM(mbm);
2287                         break;
2288                 }
2289
2290                 ieee80211_recalc_txpower(sdata);
2291
2292                 return 0;
2293         }
2294
2295         switch (type) {
2296         case NL80211_TX_POWER_AUTOMATIC:
2297                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2298                 break;
2299         case NL80211_TX_POWER_LIMITED:
2300         case NL80211_TX_POWER_FIXED:
2301                 if (mbm < 0 || (mbm % 100))
2302                         return -EOPNOTSUPP;
2303                 local->user_power_level = MBM_TO_DBM(mbm);
2304                 break;
2305         }
2306
2307         mutex_lock(&local->iflist_mtx);
2308         list_for_each_entry(sdata, &local->interfaces, list)
2309                 sdata->user_power_level = local->user_power_level;
2310         list_for_each_entry(sdata, &local->interfaces, list)
2311                 ieee80211_recalc_txpower(sdata);
2312         mutex_unlock(&local->iflist_mtx);
2313
2314         return 0;
2315 }
2316
2317 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2318                                   struct wireless_dev *wdev,
2319                                   int *dbm)
2320 {
2321         struct ieee80211_local *local = wiphy_priv(wiphy);
2322         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2323
2324         if (!local->use_chanctx)
2325                 *dbm = local->hw.conf.power_level;
2326         else
2327                 *dbm = sdata->vif.bss_conf.txpower;
2328
2329         return 0;
2330 }
2331
2332 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2333                                   const u8 *addr)
2334 {
2335         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2336
2337         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2338
2339         return 0;
2340 }
2341
2342 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2343 {
2344         struct ieee80211_local *local = wiphy_priv(wiphy);
2345
2346         drv_rfkill_poll(local);
2347 }
2348
2349 #ifdef CONFIG_NL80211_TESTMODE
2350 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2351                                   struct wireless_dev *wdev,
2352                                   void *data, int len)
2353 {
2354         struct ieee80211_local *local = wiphy_priv(wiphy);
2355         struct ieee80211_vif *vif = NULL;
2356
2357         if (!local->ops->testmode_cmd)
2358                 return -EOPNOTSUPP;
2359
2360         if (wdev) {
2361                 struct ieee80211_sub_if_data *sdata;
2362
2363                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2364                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2365                         vif = &sdata->vif;
2366         }
2367
2368         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2369 }
2370
2371 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2372                                    struct sk_buff *skb,
2373                                    struct netlink_callback *cb,
2374                                    void *data, int len)
2375 {
2376         struct ieee80211_local *local = wiphy_priv(wiphy);
2377
2378         if (!local->ops->testmode_dump)
2379                 return -EOPNOTSUPP;
2380
2381         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2382 }
2383 #endif
2384
2385 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2386                                 enum ieee80211_smps_mode smps_mode)
2387 {
2388         struct sta_info *sta;
2389         enum ieee80211_smps_mode old_req;
2390         int i;
2391
2392         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2393                 return -EINVAL;
2394
2395         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2396                 return 0;
2397
2398         old_req = sdata->u.ap.req_smps;
2399         sdata->u.ap.req_smps = smps_mode;
2400
2401         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2402         if (old_req == smps_mode ||
2403             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2404                 return 0;
2405
2406          /* If no associated stations, there's no need to do anything */
2407         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2408                 sdata->smps_mode = smps_mode;
2409                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2410                 return 0;
2411         }
2412
2413         ht_dbg(sdata,
2414                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2415                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2416
2417         mutex_lock(&sdata->local->sta_mtx);
2418         for (i = 0; i < STA_HASH_SIZE; i++) {
2419                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2420                                 lockdep_is_held(&sdata->local->sta_mtx));
2421                      sta;
2422                      sta = rcu_dereference_protected(sta->hnext,
2423                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2424                         /*
2425                          * Only stations associated to our AP and
2426                          * associated VLANs
2427                          */
2428                         if (sta->sdata->bss != &sdata->u.ap)
2429                                 continue;
2430
2431                         /* This station doesn't support MIMO - skip it */
2432                         if (sta_info_tx_streams(sta) == 1)
2433                                 continue;
2434
2435                         /*
2436                          * Don't wake up a STA just to send the action frame
2437                          * unless we are getting more restrictive.
2438                          */
2439                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2440                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2441                                                            smps_mode)) {
2442                                 ht_dbg(sdata,
2443                                        "Won't send SMPS to sleeping STA %pM\n",
2444                                        sta->sta.addr);
2445                                 continue;
2446                         }
2447
2448                         /*
2449                          * If the STA is not authorized, wait until it gets
2450                          * authorized and the action frame will be sent then.
2451                          */
2452                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2453                                 continue;
2454
2455                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2456                         ieee80211_send_smps_action(sdata, smps_mode,
2457                                                    sta->sta.addr,
2458                                                    sdata->vif.bss_conf.bssid);
2459                 }
2460         }
2461         mutex_unlock(&sdata->local->sta_mtx);
2462
2463         sdata->smps_mode = smps_mode;
2464         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2465
2466         return 0;
2467 }
2468
2469 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2470                                  enum ieee80211_smps_mode smps_mode)
2471 {
2472         const u8 *ap;
2473         enum ieee80211_smps_mode old_req;
2474         int err;
2475
2476         lockdep_assert_held(&sdata->wdev.mtx);
2477
2478         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2479                 return -EINVAL;
2480
2481         old_req = sdata->u.mgd.req_smps;
2482         sdata->u.mgd.req_smps = smps_mode;
2483
2484         if (old_req == smps_mode &&
2485             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2486                 return 0;
2487
2488         /*
2489          * If not associated, or current association is not an HT
2490          * association, there's no need to do anything, just store
2491          * the new value until we associate.
2492          */
2493         if (!sdata->u.mgd.associated ||
2494             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2495                 return 0;
2496
2497         ap = sdata->u.mgd.associated->bssid;
2498
2499         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2500                 if (sdata->u.mgd.powersave)
2501                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2502                 else
2503                         smps_mode = IEEE80211_SMPS_OFF;
2504         }
2505
2506         /* send SM PS frame to AP */
2507         err = ieee80211_send_smps_action(sdata, smps_mode,
2508                                          ap, ap);
2509         if (err)
2510                 sdata->u.mgd.req_smps = old_req;
2511
2512         return err;
2513 }
2514
2515 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2516                                     bool enabled, int timeout)
2517 {
2518         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2519         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2520
2521         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2522                 return -EOPNOTSUPP;
2523
2524         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2525                 return -EOPNOTSUPP;
2526
2527         if (enabled == sdata->u.mgd.powersave &&
2528             timeout == local->dynamic_ps_forced_timeout)
2529                 return 0;
2530
2531         sdata->u.mgd.powersave = enabled;
2532         local->dynamic_ps_forced_timeout = timeout;
2533
2534         /* no change, but if automatic follow powersave */
2535         sdata_lock(sdata);
2536         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2537         sdata_unlock(sdata);
2538
2539         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2540                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2541
2542         ieee80211_recalc_ps(local, -1);
2543         ieee80211_recalc_ps_vif(sdata);
2544
2545         return 0;
2546 }
2547
2548 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2549                                          struct net_device *dev,
2550                                          s32 rssi_thold, u32 rssi_hyst)
2551 {
2552         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2553         struct ieee80211_vif *vif = &sdata->vif;
2554         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2555
2556         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2557             rssi_hyst == bss_conf->cqm_rssi_hyst)
2558                 return 0;
2559
2560         bss_conf->cqm_rssi_thold = rssi_thold;
2561         bss_conf->cqm_rssi_hyst = rssi_hyst;
2562
2563         /* tell the driver upon association, unless already associated */
2564         if (sdata->u.mgd.associated &&
2565             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2566                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2567
2568         return 0;
2569 }
2570
2571 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2572                                       struct net_device *dev,
2573                                       const u8 *addr,
2574                                       const struct cfg80211_bitrate_mask *mask)
2575 {
2576         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2577         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2578         int i, ret;
2579
2580         if (!ieee80211_sdata_running(sdata))
2581                 return -ENETDOWN;
2582
2583         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2584                 ret = drv_set_bitrate_mask(local, sdata, mask);
2585                 if (ret)
2586                         return ret;
2587         }
2588
2589         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2590                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2591                 int j;
2592
2593                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2594                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2595                        sizeof(mask->control[i].ht_mcs));
2596
2597                 sdata->rc_has_mcs_mask[i] = false;
2598                 if (!sband)
2599                         continue;
2600
2601                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2602                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2603                                 sdata->rc_has_mcs_mask[i] = true;
2604                                 break;
2605                         }
2606         }
2607
2608         return 0;
2609 }
2610
2611 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2612                                     struct ieee80211_sub_if_data *sdata,
2613                                     struct ieee80211_channel *channel,
2614                                     unsigned int duration, u64 *cookie,
2615                                     struct sk_buff *txskb,
2616                                     enum ieee80211_roc_type type)
2617 {
2618         struct ieee80211_roc_work *roc, *tmp;
2619         bool queued = false;
2620         int ret;
2621
2622         lockdep_assert_held(&local->mtx);
2623
2624         if (local->use_chanctx && !local->ops->remain_on_channel)
2625                 return -EOPNOTSUPP;
2626
2627         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2628         if (!roc)
2629                 return -ENOMEM;
2630
2631         roc->chan = channel;
2632         roc->duration = duration;
2633         roc->req_duration = duration;
2634         roc->frame = txskb;
2635         roc->type = type;
2636         roc->mgmt_tx_cookie = (unsigned long)txskb;
2637         roc->sdata = sdata;
2638         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2639         INIT_LIST_HEAD(&roc->dependents);
2640
2641         /* if there's one pending or we're scanning, queue this one */
2642         if (!list_empty(&local->roc_list) ||
2643             local->scanning || local->radar_detect_enabled)
2644                 goto out_check_combine;
2645
2646         /* if not HW assist, just queue & schedule work */
2647         if (!local->ops->remain_on_channel) {
2648                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2649                 goto out_queue;
2650         }
2651
2652         /* otherwise actually kick it off here (for error handling) */
2653
2654         /*
2655          * If the duration is zero, then the driver
2656          * wouldn't actually do anything. Set it to
2657          * 10 for now.
2658          *
2659          * TODO: cancel the off-channel operation
2660          *       when we get the SKB's TX status and
2661          *       the wait time was zero before.
2662          */
2663         if (!duration)
2664                 duration = 10;
2665
2666         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2667         if (ret) {
2668                 kfree(roc);
2669                 return ret;
2670         }
2671
2672         roc->started = true;
2673         goto out_queue;
2674
2675  out_check_combine:
2676         list_for_each_entry(tmp, &local->roc_list, list) {
2677                 if (tmp->chan != channel || tmp->sdata != sdata)
2678                         continue;
2679
2680                 /*
2681                  * Extend this ROC if possible:
2682                  *
2683                  * If it hasn't started yet, just increase the duration
2684                  * and add the new one to the list of dependents.
2685                  * If the type of the new ROC has higher priority, modify the
2686                  * type of the previous one to match that of the new one.
2687                  */
2688                 if (!tmp->started) {
2689                         list_add_tail(&roc->list, &tmp->dependents);
2690                         tmp->duration = max(tmp->duration, roc->duration);
2691                         tmp->type = max(tmp->type, roc->type);
2692                         queued = true;
2693                         break;
2694                 }
2695
2696                 /* If it has already started, it's more difficult ... */
2697                 if (local->ops->remain_on_channel) {
2698                         unsigned long j = jiffies;
2699
2700                         /*
2701                          * In the offloaded ROC case, if it hasn't begun, add
2702                          * this new one to the dependent list to be handled
2703                          * when the master one begins. If it has begun,
2704                          * check that there's still a minimum time left and
2705                          * if so, start this one, transmitting the frame, but
2706                          * add it to the list directly after this one with
2707                          * a reduced time so we'll ask the driver to execute
2708                          * it right after finishing the previous one, in the
2709                          * hope that it'll also be executed right afterwards,
2710                          * effectively extending the old one.
2711                          * If there's no minimum time left, just add it to the
2712                          * normal list.
2713                          * TODO: the ROC type is ignored here, assuming that it
2714                          * is better to immediately use the current ROC.
2715                          */
2716                         if (!tmp->hw_begun) {
2717                                 list_add_tail(&roc->list, &tmp->dependents);
2718                                 queued = true;
2719                                 break;
2720                         }
2721
2722                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2723                                         tmp->hw_start_time +
2724                                         msecs_to_jiffies(tmp->duration))) {
2725                                 int new_dur;
2726
2727                                 ieee80211_handle_roc_started(roc);
2728
2729                                 new_dur = roc->duration -
2730                                           jiffies_to_msecs(tmp->hw_start_time +
2731                                                            msecs_to_jiffies(
2732                                                                 tmp->duration) -
2733                                                            j);
2734
2735                                 if (new_dur > 0) {
2736                                         /* add right after tmp */
2737                                         list_add(&roc->list, &tmp->list);
2738                                 } else {
2739                                         list_add_tail(&roc->list,
2740                                                       &tmp->dependents);
2741                                 }
2742                                 queued = true;
2743                         }
2744                 } else if (del_timer_sync(&tmp->work.timer)) {
2745                         unsigned long new_end;
2746
2747                         /*
2748                          * In the software ROC case, cancel the timer, if
2749                          * that fails then the finish work is already
2750                          * queued/pending and thus we queue the new ROC
2751                          * normally, if that succeeds then we can extend
2752                          * the timer duration and TX the frame (if any.)
2753                          */
2754
2755                         list_add_tail(&roc->list, &tmp->dependents);
2756                         queued = true;
2757
2758                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2759
2760                         /* ok, it was started & we canceled timer */
2761                         if (time_after(new_end, tmp->work.timer.expires))
2762                                 mod_timer(&tmp->work.timer, new_end);
2763                         else
2764                                 add_timer(&tmp->work.timer);
2765
2766                         ieee80211_handle_roc_started(roc);
2767                 }
2768                 break;
2769         }
2770
2771  out_queue:
2772         if (!queued)
2773                 list_add_tail(&roc->list, &local->roc_list);
2774
2775         /*
2776          * cookie is either the roc cookie (for normal roc)
2777          * or the SKB (for mgmt TX)
2778          */
2779         if (!txskb) {
2780                 /* local->mtx protects this */
2781                 local->roc_cookie_counter++;
2782                 roc->cookie = local->roc_cookie_counter;
2783                 /* wow, you wrapped 64 bits ... more likely a bug */
2784                 if (WARN_ON(roc->cookie == 0)) {
2785                         roc->cookie = 1;
2786                         local->roc_cookie_counter++;
2787                 }
2788                 *cookie = roc->cookie;
2789         } else {
2790                 *cookie = (unsigned long)txskb;
2791         }
2792
2793         return 0;
2794 }
2795
2796 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2797                                        struct wireless_dev *wdev,
2798                                        struct ieee80211_channel *chan,
2799                                        unsigned int duration,
2800                                        u64 *cookie)
2801 {
2802         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2803         struct ieee80211_local *local = sdata->local;
2804         int ret;
2805
2806         mutex_lock(&local->mtx);
2807         ret = ieee80211_start_roc_work(local, sdata, chan,
2808                                        duration, cookie, NULL,
2809                                        IEEE80211_ROC_TYPE_NORMAL);
2810         mutex_unlock(&local->mtx);
2811
2812         return ret;
2813 }
2814
2815 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2816                                 u64 cookie, bool mgmt_tx)
2817 {
2818         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2819         int ret;
2820
2821         mutex_lock(&local->mtx);
2822         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2823                 struct ieee80211_roc_work *dep, *tmp2;
2824
2825                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2826                         if (!mgmt_tx && dep->cookie != cookie)
2827                                 continue;
2828                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2829                                 continue;
2830                         /* found dependent item -- just remove it */
2831                         list_del(&dep->list);
2832                         mutex_unlock(&local->mtx);
2833
2834                         ieee80211_roc_notify_destroy(dep, true);
2835                         return 0;
2836                 }
2837
2838                 if (!mgmt_tx && roc->cookie != cookie)
2839                         continue;
2840                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2841                         continue;
2842
2843                 found = roc;
2844                 break;
2845         }
2846
2847         if (!found) {
2848                 mutex_unlock(&local->mtx);
2849                 return -ENOENT;
2850         }
2851
2852         /*
2853          * We found the item to cancel, so do that. Note that it
2854          * may have dependents, which we also cancel (and send
2855          * the expired signal for.) Not doing so would be quite
2856          * tricky here, but we may need to fix it later.
2857          */
2858
2859         if (local->ops->remain_on_channel) {
2860                 if (found->started) {
2861                         ret = drv_cancel_remain_on_channel(local);
2862                         if (WARN_ON_ONCE(ret)) {
2863                                 mutex_unlock(&local->mtx);
2864                                 return ret;
2865                         }
2866                 }
2867
2868                 list_del(&found->list);
2869
2870                 if (found->started)
2871                         ieee80211_start_next_roc(local);
2872                 mutex_unlock(&local->mtx);
2873
2874                 ieee80211_roc_notify_destroy(found, true);
2875         } else {
2876                 /* work may be pending so use it all the time */
2877                 found->abort = true;
2878                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2879
2880                 mutex_unlock(&local->mtx);
2881
2882                 /* work will clean up etc */
2883                 flush_delayed_work(&found->work);
2884                 WARN_ON(!found->to_be_freed);
2885                 kfree(found);
2886         }
2887
2888         return 0;
2889 }
2890
2891 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2892                                               struct wireless_dev *wdev,
2893                                               u64 cookie)
2894 {
2895         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2896         struct ieee80211_local *local = sdata->local;
2897
2898         return ieee80211_cancel_roc(local, cookie, false);
2899 }
2900
2901 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2902                                            struct net_device *dev,
2903                                            struct cfg80211_chan_def *chandef)
2904 {
2905         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2906         struct ieee80211_local *local = sdata->local;
2907         unsigned long timeout;
2908         int err;
2909
2910         mutex_lock(&local->mtx);
2911         if (!list_empty(&local->roc_list) || local->scanning) {
2912                 err = -EBUSY;
2913                 goto out_unlock;
2914         }
2915
2916         /* whatever, but channel contexts should not complain about that one */
2917         sdata->smps_mode = IEEE80211_SMPS_OFF;
2918         sdata->needed_rx_chains = local->rx_chains;
2919         sdata->radar_required = true;
2920
2921         err = ieee80211_vif_use_channel(sdata, chandef,
2922                                         IEEE80211_CHANCTX_SHARED);
2923         if (err)
2924                 goto out_unlock;
2925
2926         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2927         ieee80211_queue_delayed_work(&sdata->local->hw,
2928                                      &sdata->dfs_cac_timer_work, timeout);
2929
2930  out_unlock:
2931         mutex_unlock(&local->mtx);
2932         return err;
2933 }
2934
2935 static struct cfg80211_beacon_data *
2936 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2937 {
2938         struct cfg80211_beacon_data *new_beacon;
2939         u8 *pos;
2940         int len;
2941
2942         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2943               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2944               beacon->probe_resp_len;
2945
2946         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2947         if (!new_beacon)
2948                 return NULL;
2949
2950         pos = (u8 *)(new_beacon + 1);
2951         if (beacon->head_len) {
2952                 new_beacon->head_len = beacon->head_len;
2953                 new_beacon->head = pos;
2954                 memcpy(pos, beacon->head, beacon->head_len);
2955                 pos += beacon->head_len;
2956         }
2957         if (beacon->tail_len) {
2958                 new_beacon->tail_len = beacon->tail_len;
2959                 new_beacon->tail = pos;
2960                 memcpy(pos, beacon->tail, beacon->tail_len);
2961                 pos += beacon->tail_len;
2962         }
2963         if (beacon->beacon_ies_len) {
2964                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2965                 new_beacon->beacon_ies = pos;
2966                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2967                 pos += beacon->beacon_ies_len;
2968         }
2969         if (beacon->proberesp_ies_len) {
2970                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2971                 new_beacon->proberesp_ies = pos;
2972                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2973                 pos += beacon->proberesp_ies_len;
2974         }
2975         if (beacon->assocresp_ies_len) {
2976                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2977                 new_beacon->assocresp_ies = pos;
2978                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2979                 pos += beacon->assocresp_ies_len;
2980         }
2981         if (beacon->probe_resp_len) {
2982                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2983                 beacon->probe_resp = pos;
2984                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2985                 pos += beacon->probe_resp_len;
2986         }
2987
2988         return new_beacon;
2989 }
2990
2991 void ieee80211_csa_finalize_work(struct work_struct *work)
2992 {
2993         struct ieee80211_sub_if_data *sdata =
2994                 container_of(work, struct ieee80211_sub_if_data,
2995                              csa_finalize_work);
2996         struct ieee80211_local *local = sdata->local;
2997         int err, changed = 0;
2998
2999         sdata_lock(sdata);
3000         /* AP might have been stopped while waiting for the lock. */
3001         if (!sdata->vif.csa_active)
3002                 goto unlock;
3003
3004         if (!ieee80211_sdata_running(sdata))
3005                 goto unlock;
3006
3007         sdata->radar_required = sdata->csa_radar_required;
3008         mutex_lock(&local->mtx);
3009         err = ieee80211_vif_change_channel(sdata, &changed);
3010         mutex_unlock(&local->mtx);
3011         if (WARN_ON(err < 0))
3012                 goto unlock;
3013
3014         if (!local->use_chanctx) {
3015                 local->_oper_chandef = sdata->csa_chandef;
3016                 ieee80211_hw_config(local, 0);
3017         }
3018
3019         ieee80211_bss_info_change_notify(sdata, changed);
3020
3021         sdata->vif.csa_active = false;
3022         switch (sdata->vif.type) {
3023         case NL80211_IFTYPE_AP:
3024                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3025                 if (err < 0)
3026                         goto unlock;
3027
3028                 changed |= err;
3029                 kfree(sdata->u.ap.next_beacon);
3030                 sdata->u.ap.next_beacon = NULL;
3031
3032                 ieee80211_bss_info_change_notify(sdata, err);
3033                 break;
3034         case NL80211_IFTYPE_ADHOC:
3035                 ieee80211_ibss_finish_csa(sdata);
3036                 break;
3037 #ifdef CONFIG_MAC80211_MESH
3038         case NL80211_IFTYPE_MESH_POINT:
3039                 err = ieee80211_mesh_finish_csa(sdata);
3040                 if (err < 0)
3041                         goto unlock;
3042                 break;
3043 #endif
3044         default:
3045                 WARN_ON(1);
3046                 goto unlock;
3047         }
3048
3049         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3050                                         IEEE80211_MAX_QUEUE_MAP,
3051                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3052
3053         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3054
3055 unlock:
3056         sdata_unlock(sdata);
3057 }
3058
3059 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3060                              struct cfg80211_csa_settings *params)
3061 {
3062         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3063         struct ieee80211_local *local = sdata->local;
3064         struct ieee80211_chanctx_conf *chanctx_conf;
3065         struct ieee80211_chanctx *chanctx;
3066         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3067         int err, num_chanctx;
3068
3069         lockdep_assert_held(&sdata->wdev.mtx);
3070
3071         if (!list_empty(&local->roc_list) || local->scanning)
3072                 return -EBUSY;
3073
3074         if (sdata->wdev.cac_started)
3075                 return -EBUSY;
3076
3077         if (cfg80211_chandef_identical(&params->chandef,
3078                                        &sdata->vif.bss_conf.chandef))
3079                 return -EINVAL;
3080
3081         rcu_read_lock();
3082         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3083         if (!chanctx_conf) {
3084                 rcu_read_unlock();
3085                 return -EBUSY;
3086         }
3087
3088         /* don't handle for multi-VIF cases */
3089         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3090         if (chanctx->refcount > 1) {
3091                 rcu_read_unlock();
3092                 return -EBUSY;
3093         }
3094         num_chanctx = 0;
3095         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3096                 num_chanctx++;
3097         rcu_read_unlock();
3098
3099         if (num_chanctx > 1)
3100                 return -EBUSY;
3101
3102         /* don't allow another channel switch if one is already active. */
3103         if (sdata->vif.csa_active)
3104                 return -EBUSY;
3105
3106         switch (sdata->vif.type) {
3107         case NL80211_IFTYPE_AP:
3108                 sdata->csa_counter_offset_beacon =
3109                         params->counter_offset_beacon;
3110                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3111                 sdata->u.ap.next_beacon =
3112                         cfg80211_beacon_dup(&params->beacon_after);
3113                 if (!sdata->u.ap.next_beacon)
3114                         return -ENOMEM;
3115
3116                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3117                 if (err < 0) {
3118                         kfree(sdata->u.ap.next_beacon);
3119                         return err;
3120                 }
3121                 break;
3122         case NL80211_IFTYPE_ADHOC:
3123                 if (!sdata->vif.bss_conf.ibss_joined)
3124                         return -EINVAL;
3125
3126                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3127                         return -EINVAL;
3128
3129                 switch (params->chandef.width) {
3130                 case NL80211_CHAN_WIDTH_40:
3131                         if (cfg80211_get_chandef_type(&params->chandef) !=
3132                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3133                                 return -EINVAL;
3134                 case NL80211_CHAN_WIDTH_5:
3135                 case NL80211_CHAN_WIDTH_10:
3136                 case NL80211_CHAN_WIDTH_20_NOHT:
3137                 case NL80211_CHAN_WIDTH_20:
3138                         break;
3139                 default:
3140                         return -EINVAL;
3141                 }
3142
3143                 /* changes into another band are not supported */
3144                 if (sdata->u.ibss.chandef.chan->band !=
3145                     params->chandef.chan->band)
3146                         return -EINVAL;
3147
3148                 err = ieee80211_ibss_csa_beacon(sdata, params);
3149                 if (err < 0)
3150                         return err;
3151                 break;
3152 #ifdef CONFIG_MAC80211_MESH
3153         case NL80211_IFTYPE_MESH_POINT:
3154                 ifmsh = &sdata->u.mesh;
3155
3156                 if (!ifmsh->mesh_id)
3157                         return -EINVAL;
3158
3159                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3160                         return -EINVAL;
3161
3162                 /* changes into another band are not supported */
3163                 if (sdata->vif.bss_conf.chandef.chan->band !=
3164                     params->chandef.chan->band)
3165                         return -EINVAL;
3166
3167                 ifmsh->chsw_init = true;
3168                 if (!ifmsh->pre_value)
3169                         ifmsh->pre_value = 1;
3170                 else
3171                         ifmsh->pre_value++;
3172
3173                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3174                 if (err < 0) {
3175                         ifmsh->chsw_init = false;
3176                         return err;
3177                 }
3178                 break;
3179 #endif
3180         default:
3181                 return -EOPNOTSUPP;
3182         }
3183
3184         sdata->csa_radar_required = params->radar_required;
3185
3186         if (params->block_tx)
3187                 ieee80211_stop_queues_by_reason(&local->hw,
3188                                 IEEE80211_MAX_QUEUE_MAP,
3189                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3190
3191         sdata->csa_chandef = params->chandef;
3192         sdata->vif.csa_active = true;
3193
3194         ieee80211_bss_info_change_notify(sdata, err);
3195         drv_channel_switch_beacon(sdata, &params->chandef);
3196
3197         return 0;
3198 }
3199
3200 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3201                              struct cfg80211_mgmt_tx_params *params,
3202                              u64 *cookie)
3203 {
3204         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3205         struct ieee80211_local *local = sdata->local;
3206         struct sk_buff *skb;
3207         struct sta_info *sta;
3208         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3209         bool need_offchan = false;
3210         u32 flags;
3211         int ret;
3212
3213         if (params->dont_wait_for_ack)
3214                 flags = IEEE80211_TX_CTL_NO_ACK;
3215         else
3216                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3217                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3218
3219         if (params->no_cck)
3220                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3221
3222         switch (sdata->vif.type) {
3223         case NL80211_IFTYPE_ADHOC:
3224                 if (!sdata->vif.bss_conf.ibss_joined)
3225                         need_offchan = true;
3226                 /* fall through */
3227 #ifdef CONFIG_MAC80211_MESH
3228         case NL80211_IFTYPE_MESH_POINT:
3229                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3230                     !sdata->u.mesh.mesh_id_len)
3231                         need_offchan = true;
3232                 /* fall through */
3233 #endif
3234         case NL80211_IFTYPE_AP:
3235         case NL80211_IFTYPE_AP_VLAN:
3236         case NL80211_IFTYPE_P2P_GO:
3237                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3238                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3239                     !rcu_access_pointer(sdata->bss->beacon))
3240                         need_offchan = true;
3241                 if (!ieee80211_is_action(mgmt->frame_control) ||
3242                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3243                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3244                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3245                         break;
3246                 rcu_read_lock();
3247                 sta = sta_info_get(sdata, mgmt->da);
3248                 rcu_read_unlock();
3249                 if (!sta)
3250                         return -ENOLINK;
3251                 break;
3252         case NL80211_IFTYPE_STATION:
3253         case NL80211_IFTYPE_P2P_CLIENT:
3254                 if (!sdata->u.mgd.associated)
3255                         need_offchan = true;
3256                 break;
3257         case NL80211_IFTYPE_P2P_DEVICE:
3258                 need_offchan = true;
3259                 break;
3260         default:
3261                 return -EOPNOTSUPP;
3262         }
3263
3264         /* configurations requiring offchan cannot work if no channel has been
3265          * specified
3266          */
3267         if (need_offchan && !params->chan)
3268                 return -EINVAL;
3269
3270         mutex_lock(&local->mtx);
3271
3272         /* Check if the operating channel is the requested channel */
3273         if (!need_offchan) {
3274                 struct ieee80211_chanctx_conf *chanctx_conf;
3275
3276                 rcu_read_lock();
3277                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3278
3279                 if (chanctx_conf) {
3280                         need_offchan = params->chan &&
3281                                        (params->chan !=
3282                                         chanctx_conf->def.chan);
3283                 } else if (!params->chan) {
3284                         ret = -EINVAL;
3285                         rcu_read_unlock();
3286                         goto out_unlock;
3287                 } else {
3288                         need_offchan = true;
3289                 }
3290                 rcu_read_unlock();
3291         }
3292
3293         if (need_offchan && !params->offchan) {
3294                 ret = -EBUSY;
3295                 goto out_unlock;
3296         }
3297
3298         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3299         if (!skb) {
3300                 ret = -ENOMEM;
3301                 goto out_unlock;
3302         }
3303         skb_reserve(skb, local->hw.extra_tx_headroom);
3304
3305         memcpy(skb_put(skb, params->len), params->buf, params->len);
3306
3307         IEEE80211_SKB_CB(skb)->flags = flags;
3308
3309         skb->dev = sdata->dev;
3310
3311         if (!need_offchan) {
3312                 *cookie = (unsigned long) skb;
3313                 ieee80211_tx_skb(sdata, skb);
3314                 ret = 0;
3315                 goto out_unlock;
3316         }
3317
3318         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3319                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3320         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3321                 IEEE80211_SKB_CB(skb)->hw_queue =
3322                         local->hw.offchannel_tx_hw_queue;
3323
3324         /* This will handle all kinds of coalescing and immediate TX */
3325         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3326                                        params->wait, cookie, skb,
3327                                        IEEE80211_ROC_TYPE_MGMT_TX);
3328         if (ret)
3329                 kfree_skb(skb);
3330  out_unlock:
3331         mutex_unlock(&local->mtx);
3332         return ret;
3333 }
3334
3335 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3336                                          struct wireless_dev *wdev,
3337                                          u64 cookie)
3338 {
3339         struct ieee80211_local *local = wiphy_priv(wiphy);
3340
3341         return ieee80211_cancel_roc(local, cookie, true);
3342 }
3343
3344 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3345                                           struct wireless_dev *wdev,
3346                                           u16 frame_type, bool reg)
3347 {
3348         struct ieee80211_local *local = wiphy_priv(wiphy);
3349
3350         switch (frame_type) {
3351         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3352                 if (reg)
3353                         local->probe_req_reg++;
3354                 else
3355                         local->probe_req_reg--;
3356
3357                 if (!local->open_count)
3358                         break;
3359
3360                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3361                 break;
3362         default:
3363                 break;
3364         }
3365 }
3366
3367 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3368 {
3369         struct ieee80211_local *local = wiphy_priv(wiphy);
3370
3371         if (local->started)
3372                 return -EOPNOTSUPP;
3373
3374         return drv_set_antenna(local, tx_ant, rx_ant);
3375 }
3376
3377 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3378 {
3379         struct ieee80211_local *local = wiphy_priv(wiphy);
3380
3381         return drv_get_antenna(local, tx_ant, rx_ant);
3382 }
3383
3384 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3385 {
3386         struct ieee80211_local *local = wiphy_priv(wiphy);
3387
3388         return drv_set_ringparam(local, tx, rx);
3389 }
3390
3391 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3392                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3393 {
3394         struct ieee80211_local *local = wiphy_priv(wiphy);
3395
3396         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3397 }
3398
3399 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3400                                     struct net_device *dev,
3401                                     struct cfg80211_gtk_rekey_data *data)
3402 {
3403         struct ieee80211_local *local = wiphy_priv(wiphy);
3404         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3405
3406         if (!local->ops->set_rekey_data)
3407                 return -EOPNOTSUPP;
3408
3409         drv_set_rekey_data(local, sdata, data);
3410
3411         return 0;
3412 }
3413
3414 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3415 {
3416         u8 *pos = (void *)skb_put(skb, 7);
3417
3418         *pos++ = WLAN_EID_EXT_CAPABILITY;
3419         *pos++ = 5; /* len */
3420         *pos++ = 0x0;
3421         *pos++ = 0x0;
3422         *pos++ = 0x0;
3423         *pos++ = 0x0;
3424         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3425 }
3426
3427 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3428 {
3429         struct ieee80211_local *local = sdata->local;
3430         u16 capab;
3431
3432         capab = 0;
3433         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3434                 return capab;
3435
3436         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3437                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3438         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3439                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3440
3441         return capab;
3442 }
3443
3444 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3445                                        u8 *peer, u8 *bssid)
3446 {
3447         struct ieee80211_tdls_lnkie *lnkid;
3448
3449         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3450
3451         lnkid->ie_type = WLAN_EID_LINK_ID;
3452         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3453
3454         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3455         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3456         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3457 }
3458
3459 static int
3460 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3461                                u8 *peer, u8 action_code, u8 dialog_token,
3462                                u16 status_code, struct sk_buff *skb)
3463 {
3464         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3465         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3466         struct ieee80211_tdls_data *tf;
3467
3468         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3469
3470         memcpy(tf->da, peer, ETH_ALEN);
3471         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3472         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3473         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3474
3475         switch (action_code) {
3476         case WLAN_TDLS_SETUP_REQUEST:
3477                 tf->category = WLAN_CATEGORY_TDLS;
3478                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3479
3480                 skb_put(skb, sizeof(tf->u.setup_req));
3481                 tf->u.setup_req.dialog_token = dialog_token;
3482                 tf->u.setup_req.capability =
3483                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3484
3485                 ieee80211_add_srates_ie(sdata, skb, false, band);
3486                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3487                 ieee80211_tdls_add_ext_capab(skb);
3488                 break;
3489         case WLAN_TDLS_SETUP_RESPONSE:
3490                 tf->category = WLAN_CATEGORY_TDLS;
3491                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3492
3493                 skb_put(skb, sizeof(tf->u.setup_resp));
3494                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3495                 tf->u.setup_resp.dialog_token = dialog_token;
3496                 tf->u.setup_resp.capability =
3497                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3498
3499                 ieee80211_add_srates_ie(sdata, skb, false, band);
3500                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3501                 ieee80211_tdls_add_ext_capab(skb);
3502                 break;
3503         case WLAN_TDLS_SETUP_CONFIRM:
3504                 tf->category = WLAN_CATEGORY_TDLS;
3505                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3506
3507                 skb_put(skb, sizeof(tf->u.setup_cfm));
3508                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3509                 tf->u.setup_cfm.dialog_token = dialog_token;
3510                 break;
3511         case WLAN_TDLS_TEARDOWN:
3512                 tf->category = WLAN_CATEGORY_TDLS;
3513                 tf->action_code = WLAN_TDLS_TEARDOWN;
3514
3515                 skb_put(skb, sizeof(tf->u.teardown));
3516                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3517                 break;
3518         case WLAN_TDLS_DISCOVERY_REQUEST:
3519                 tf->category = WLAN_CATEGORY_TDLS;
3520                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3521
3522                 skb_put(skb, sizeof(tf->u.discover_req));
3523                 tf->u.discover_req.dialog_token = dialog_token;
3524                 break;
3525         default:
3526                 return -EINVAL;
3527         }
3528
3529         return 0;
3530 }
3531
3532 static int
3533 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3534                            u8 *peer, u8 action_code, u8 dialog_token,
3535                            u16 status_code, struct sk_buff *skb)
3536 {
3537         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3538         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3539         struct ieee80211_mgmt *mgmt;
3540
3541         mgmt = (void *)skb_put(skb, 24);
3542         memset(mgmt, 0, 24);
3543         memcpy(mgmt->da, peer, ETH_ALEN);
3544         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3545         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3546
3547         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3548                                           IEEE80211_STYPE_ACTION);
3549
3550         switch (action_code) {
3551         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3552                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3553                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3554                 mgmt->u.action.u.tdls_discover_resp.action_code =
3555                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3556                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3557                         dialog_token;
3558                 mgmt->u.action.u.tdls_discover_resp.capability =
3559                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3560
3561                 ieee80211_add_srates_ie(sdata, skb, false, band);
3562                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3563                 ieee80211_tdls_add_ext_capab(skb);
3564                 break;
3565         default:
3566                 return -EINVAL;
3567         }
3568
3569         return 0;
3570 }
3571
3572 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3573                                u8 *peer, u8 action_code, u8 dialog_token,
3574                                u16 status_code, const u8 *extra_ies,
3575                                size_t extra_ies_len)
3576 {
3577         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3578         struct ieee80211_local *local = sdata->local;
3579         struct sk_buff *skb = NULL;
3580         bool send_direct;
3581         int ret;
3582
3583         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3584                 return -ENOTSUPP;
3585
3586         /* make sure we are in managed mode, and associated */
3587         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3588             !sdata->u.mgd.associated)
3589                 return -EINVAL;
3590
3591         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3592                  action_code, peer);
3593
3594         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3595                             max(sizeof(struct ieee80211_mgmt),
3596                                 sizeof(struct ieee80211_tdls_data)) +
3597                             50 + /* supported rates */
3598                             7 + /* ext capab */
3599                             extra_ies_len +
3600                             sizeof(struct ieee80211_tdls_lnkie));
3601         if (!skb)
3602                 return -ENOMEM;
3603
3604         skb_reserve(skb, local->hw.extra_tx_headroom);
3605
3606         switch (action_code) {
3607         case WLAN_TDLS_SETUP_REQUEST:
3608         case WLAN_TDLS_SETUP_RESPONSE:
3609         case WLAN_TDLS_SETUP_CONFIRM:
3610         case WLAN_TDLS_TEARDOWN:
3611         case WLAN_TDLS_DISCOVERY_REQUEST:
3612                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3613                                                      action_code, dialog_token,
3614                                                      status_code, skb);
3615                 send_direct = false;
3616                 break;
3617         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3618                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3619                                                  dialog_token, status_code,
3620                                                  skb);
3621                 send_direct = true;
3622                 break;
3623         default:
3624                 ret = -ENOTSUPP;
3625                 break;
3626         }
3627
3628         if (ret < 0)
3629                 goto fail;
3630
3631         if (extra_ies_len)
3632                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3633
3634         /* the TDLS link IE is always added last */
3635         switch (action_code) {
3636         case WLAN_TDLS_SETUP_REQUEST:
3637         case WLAN_TDLS_SETUP_CONFIRM:
3638         case WLAN_TDLS_TEARDOWN:
3639         case WLAN_TDLS_DISCOVERY_REQUEST:
3640                 /* we are the initiator */
3641                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3642                                            sdata->u.mgd.bssid);
3643                 break;
3644         case WLAN_TDLS_SETUP_RESPONSE:
3645         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3646                 /* we are the responder */
3647                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3648                                            sdata->u.mgd.bssid);
3649                 break;
3650         default:
3651                 ret = -ENOTSUPP;
3652                 goto fail;
3653         }
3654
3655         if (send_direct) {
3656                 ieee80211_tx_skb(sdata, skb);
3657                 return 0;
3658         }
3659
3660         /*
3661          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3662          * we should default to AC_VI.
3663          */
3664         switch (action_code) {
3665         case WLAN_TDLS_SETUP_REQUEST:
3666         case WLAN_TDLS_SETUP_RESPONSE:
3667                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3668                 skb->priority = 2;
3669                 break;
3670         default:
3671                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3672                 skb->priority = 5;
3673                 break;
3674         }
3675
3676         /* disable bottom halves when entering the Tx path */
3677         local_bh_disable();
3678         ret = ieee80211_subif_start_xmit(skb, dev);
3679         local_bh_enable();
3680
3681         return ret;
3682
3683 fail:
3684         dev_kfree_skb(skb);
3685         return ret;
3686 }
3687
3688 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3689                                u8 *peer, enum nl80211_tdls_operation oper)
3690 {
3691         struct sta_info *sta;
3692         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3693
3694         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3695                 return -ENOTSUPP;
3696
3697         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3698                 return -EINVAL;
3699
3700         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3701
3702         switch (oper) {
3703         case NL80211_TDLS_ENABLE_LINK:
3704                 rcu_read_lock();
3705                 sta = sta_info_get(sdata, peer);
3706                 if (!sta) {
3707                         rcu_read_unlock();
3708                         return -ENOLINK;
3709                 }
3710
3711                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3712                 rcu_read_unlock();
3713                 break;
3714         case NL80211_TDLS_DISABLE_LINK:
3715                 return sta_info_destroy_addr(sdata, peer);
3716         case NL80211_TDLS_TEARDOWN:
3717         case NL80211_TDLS_SETUP:
3718         case NL80211_TDLS_DISCOVERY_REQ:
3719                 /* We don't support in-driver setup/teardown/discovery */
3720                 return -ENOTSUPP;
3721         default:
3722                 return -ENOTSUPP;
3723         }
3724
3725         return 0;
3726 }
3727
3728 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3729                                   const u8 *peer, u64 *cookie)
3730 {
3731         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3732         struct ieee80211_local *local = sdata->local;
3733         struct ieee80211_qos_hdr *nullfunc;
3734         struct sk_buff *skb;
3735         int size = sizeof(*nullfunc);
3736         __le16 fc;
3737         bool qos;
3738         struct ieee80211_tx_info *info;
3739         struct sta_info *sta;
3740         struct ieee80211_chanctx_conf *chanctx_conf;
3741         enum ieee80211_band band;
3742
3743         rcu_read_lock();
3744         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3745         if (WARN_ON(!chanctx_conf)) {
3746                 rcu_read_unlock();
3747                 return -EINVAL;
3748         }
3749         band = chanctx_conf->def.chan->band;
3750         sta = sta_info_get_bss(sdata, peer);
3751         if (sta) {
3752                 qos = test_sta_flag(sta, WLAN_STA_WME);
3753         } else {
3754                 rcu_read_unlock();
3755                 return -ENOLINK;
3756         }
3757
3758         if (qos) {
3759                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3760                                  IEEE80211_STYPE_QOS_NULLFUNC |
3761                                  IEEE80211_FCTL_FROMDS);
3762         } else {
3763                 size -= 2;
3764                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3765                                  IEEE80211_STYPE_NULLFUNC |
3766                                  IEEE80211_FCTL_FROMDS);
3767         }
3768
3769         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3770         if (!skb) {
3771                 rcu_read_unlock();
3772                 return -ENOMEM;
3773         }
3774
3775         skb->dev = dev;
3776
3777         skb_reserve(skb, local->hw.extra_tx_headroom);
3778
3779         nullfunc = (void *) skb_put(skb, size);
3780         nullfunc->frame_control = fc;
3781         nullfunc->duration_id = 0;
3782         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3783         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3784         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3785         nullfunc->seq_ctrl = 0;
3786
3787         info = IEEE80211_SKB_CB(skb);
3788
3789         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3790                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3791
3792         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3793         skb->priority = 7;
3794         if (qos)
3795                 nullfunc->qos_ctrl = cpu_to_le16(7);
3796
3797         local_bh_disable();
3798         ieee80211_xmit(sdata, skb, band);
3799         local_bh_enable();
3800         rcu_read_unlock();
3801
3802         *cookie = (unsigned long) skb;
3803         return 0;
3804 }
3805
3806 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3807                                      struct wireless_dev *wdev,
3808                                      struct cfg80211_chan_def *chandef)
3809 {
3810         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3811         struct ieee80211_local *local = wiphy_priv(wiphy);
3812         struct ieee80211_chanctx_conf *chanctx_conf;
3813         int ret = -ENODATA;
3814
3815         rcu_read_lock();
3816         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3817         if (chanctx_conf) {
3818                 *chandef = chanctx_conf->def;
3819                 ret = 0;
3820         } else if (local->open_count > 0 &&
3821                    local->open_count == local->monitors &&
3822                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3823                 if (local->use_chanctx)
3824                         *chandef = local->monitor_chandef;
3825                 else
3826                         *chandef = local->_oper_chandef;
3827                 ret = 0;
3828         }
3829         rcu_read_unlock();
3830
3831         return ret;
3832 }
3833
3834 #ifdef CONFIG_PM
3835 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3836 {
3837         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3838 }
3839 #endif
3840
3841 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3842                                  struct net_device *dev,
3843                                  struct cfg80211_qos_map *qos_map)
3844 {
3845         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3846         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3847
3848         if (qos_map) {
3849                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3850                 if (!new_qos_map)
3851                         return -ENOMEM;
3852                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3853         } else {
3854                 /* A NULL qos_map was passed to disable QoS mapping */
3855                 new_qos_map = NULL;
3856         }
3857
3858         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3859         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3860         if (old_qos_map)
3861                 kfree_rcu(old_qos_map, rcu_head);
3862
3863         return 0;
3864 }
3865
3866 struct cfg80211_ops mac80211_config_ops = {
3867         .add_virtual_intf = ieee80211_add_iface,
3868         .del_virtual_intf = ieee80211_del_iface,
3869         .change_virtual_intf = ieee80211_change_iface,
3870         .start_p2p_device = ieee80211_start_p2p_device,
3871         .stop_p2p_device = ieee80211_stop_p2p_device,
3872         .add_key = ieee80211_add_key,
3873         .del_key = ieee80211_del_key,
3874         .get_key = ieee80211_get_key,
3875         .set_default_key = ieee80211_config_default_key,
3876         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3877         .start_ap = ieee80211_start_ap,
3878         .change_beacon = ieee80211_change_beacon,
3879         .stop_ap = ieee80211_stop_ap,
3880         .add_station = ieee80211_add_station,
3881         .del_station = ieee80211_del_station,
3882         .change_station = ieee80211_change_station,
3883         .get_station = ieee80211_get_station,
3884         .dump_station = ieee80211_dump_station,
3885         .dump_survey = ieee80211_dump_survey,
3886 #ifdef CONFIG_MAC80211_MESH
3887         .add_mpath = ieee80211_add_mpath,
3888         .del_mpath = ieee80211_del_mpath,
3889         .change_mpath = ieee80211_change_mpath,
3890         .get_mpath = ieee80211_get_mpath,
3891         .dump_mpath = ieee80211_dump_mpath,
3892         .update_mesh_config = ieee80211_update_mesh_config,
3893         .get_mesh_config = ieee80211_get_mesh_config,
3894         .join_mesh = ieee80211_join_mesh,
3895         .leave_mesh = ieee80211_leave_mesh,
3896 #endif
3897         .change_bss = ieee80211_change_bss,
3898         .set_txq_params = ieee80211_set_txq_params,
3899         .set_monitor_channel = ieee80211_set_monitor_channel,
3900         .suspend = ieee80211_suspend,
3901         .resume = ieee80211_resume,
3902         .scan = ieee80211_scan,
3903         .sched_scan_start = ieee80211_sched_scan_start,
3904         .sched_scan_stop = ieee80211_sched_scan_stop,
3905         .auth = ieee80211_auth,
3906         .assoc = ieee80211_assoc,
3907         .deauth = ieee80211_deauth,
3908         .disassoc = ieee80211_disassoc,
3909         .join_ibss = ieee80211_join_ibss,
3910         .leave_ibss = ieee80211_leave_ibss,
3911         .set_mcast_rate = ieee80211_set_mcast_rate,
3912         .set_wiphy_params = ieee80211_set_wiphy_params,
3913         .set_tx_power = ieee80211_set_tx_power,
3914         .get_tx_power = ieee80211_get_tx_power,
3915         .set_wds_peer = ieee80211_set_wds_peer,
3916         .rfkill_poll = ieee80211_rfkill_poll,
3917         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3918         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3919         .set_power_mgmt = ieee80211_set_power_mgmt,
3920         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3921         .remain_on_channel = ieee80211_remain_on_channel,
3922         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3923         .mgmt_tx = ieee80211_mgmt_tx,
3924         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3925         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3926         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3927         .set_antenna = ieee80211_set_antenna,
3928         .get_antenna = ieee80211_get_antenna,
3929         .set_ringparam = ieee80211_set_ringparam,
3930         .get_ringparam = ieee80211_get_ringparam,
3931         .set_rekey_data = ieee80211_set_rekey_data,
3932         .tdls_oper = ieee80211_tdls_oper,
3933         .tdls_mgmt = ieee80211_tdls_mgmt,
3934         .probe_client = ieee80211_probe_client,
3935         .set_noack_map = ieee80211_set_noack_map,
3936 #ifdef CONFIG_PM
3937         .set_wakeup = ieee80211_set_wakeup,
3938 #endif
3939         .get_et_sset_count = ieee80211_get_et_sset_count,
3940         .get_et_stats = ieee80211_get_et_stats,
3941         .get_et_strings = ieee80211_get_et_strings,
3942         .get_channel = ieee80211_cfg_get_channel,
3943         .start_radar_detection = ieee80211_start_radar_detection,
3944         .channel_switch = ieee80211_channel_switch,
3945         .set_qos_map = ieee80211_set_qos_map,
3946 };