Pileus Git - ~andy/linux/blob - 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_bss_info_change_notify(sdata, changed);
1039
1040         netif_carrier_on(dev);
1041         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1042                 netif_carrier_on(vlan->dev);
1043
1044         return 0;
1045 }
1046
1047 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1048                                    struct cfg80211_beacon_data *params)
1049 {
1050         struct ieee80211_sub_if_data *sdata;
1051         struct beacon_data *old;
1052         int err;
1053
1054         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1055
1056         /* don't allow changing the beacon while CSA is in place - offset
1057          * of channel switch counter may change
1058          */
1059         if (sdata->vif.csa_active)
1060                 return -EBUSY;
1061
1062         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1063         if (!old)
1064                 return -ENOENT;
1065
1066         err = ieee80211_assign_beacon(sdata, params);
1067         if (err < 0)
1068                 return err;
1069         ieee80211_bss_info_change_notify(sdata, err);
1070         return 0;
1071 }
1072
1073 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1074 {
1075         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1076         struct ieee80211_sub_if_data *vlan;
1077         struct ieee80211_local *local = sdata->local;
1078         struct beacon_data *old_beacon;
1079         struct probe_resp *old_probe_resp;
1080         struct cfg80211_chan_def chandef;
1081
1082         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1083         if (!old_beacon)
1084                 return -ENOENT;
1085         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1086
1087         /* abort any running channel switch */
1088         sdata->vif.csa_active = false;
1089         kfree(sdata->u.ap.next_beacon);
1090         sdata->u.ap.next_beacon = NULL;
1091
1092         cancel_work_sync(&sdata->u.ap.request_smps_work);
1093
1094         /* turn off carrier for this interface and dependent VLANs */
1095         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1096                 netif_carrier_off(vlan->dev);
1097         netif_carrier_off(dev);
1098
1099         /* remove beacon and probe response */
1100         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1101         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1102         kfree_rcu(old_beacon, rcu_head);
1103         if (old_probe_resp)
1104                 kfree_rcu(old_probe_resp, rcu_head);
1105
1106         __sta_info_flush(sdata, true);
1107         ieee80211_free_keys(sdata, true);
1108
1109         sdata->vif.bss_conf.enable_beacon = false;
1110         sdata->vif.bss_conf.ssid_len = 0;
1111         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1112         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1113
1114         if (sdata->wdev.cac_started) {
1115                 chandef = sdata->vif.bss_conf.chandef;
1116                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1117                 cfg80211_cac_event(sdata->dev, &chandef,
1118                                    NL80211_RADAR_CAC_ABORTED,
1119                                    GFP_KERNEL);
1120         }
1121
1122         drv_stop_ap(sdata->local, sdata);
1123
1124         /* free all potentially still buffered bcast frames */
1125         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1126         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1127
1128         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1129         mutex_lock(&local->mtx);
1130         ieee80211_vif_release_channel(sdata);
1131         mutex_unlock(&local->mtx);
1132
1133         return 0;
1134 }
1135
1136 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1137 struct iapp_layer2_update {
1138         u8 da[ETH_ALEN];        /* broadcast */
1139         u8 sa[ETH_ALEN];        /* STA addr */
1140         __be16 len;             /* 6 */
1141         u8 dsap;                /* 0 */
1142         u8 ssap;                /* 0 */
1143         u8 control;
1144         u8 xid_info[3];
1145 } __packed;
1146
1147 static void ieee80211_send_layer2_update(struct sta_info *sta)
1148 {
1149         struct iapp_layer2_update *msg;
1150         struct sk_buff *skb;
1151
1152         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1153          * bridge devices */
1154
1155         skb = dev_alloc_skb(sizeof(*msg));
1156         if (!skb)
1157                 return;
1158         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1159
1160         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1161          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1162
1163         eth_broadcast_addr(msg->da);
1164         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1165         msg->len = htons(6);
1166         msg->dsap = 0;
1167         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1168         msg->control = 0xaf;    /* XID response lsb.1111F101.
1169                                  * F=0 (no poll command; unsolicited frame) */
1170         msg->xid_info[0] = 0x81;        /* XID format identifier */
1171         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1172         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1173
1174         skb->dev = sta->sdata->dev;
1175         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1176         memset(skb->cb, 0, sizeof(skb->cb));
1177         netif_rx_ni(skb);
1178 }
1179
1180 static int sta_apply_auth_flags(struct ieee80211_local *local,
1181                                 struct sta_info *sta,
1182                                 u32 mask, u32 set)
1183 {
1184         int ret;
1185
1186         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1187             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1188             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1189                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1190                 if (ret)
1191                         return ret;
1192         }
1193
1194         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1195             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1196             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1197                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1198                 if (ret)
1199                         return ret;
1200         }
1201
1202         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1203                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1204                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1205                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1206                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1207                 else
1208                         ret = 0;
1209                 if (ret)
1210                         return ret;
1211         }
1212
1213         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1214             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1215             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1216                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1217                 if (ret)
1218                         return ret;
1219         }
1220
1221         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1222             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1223             test_sta_flag(sta, WLAN_STA_AUTH)) {
1224                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1225                 if (ret)
1226                         return ret;
1227         }
1228
1229         return 0;
1230 }
1231
1232 static int sta_apply_parameters(struct ieee80211_local *local,
1233                                 struct sta_info *sta,
1234                                 struct station_parameters *params)
1235 {
1236         int ret = 0;
1237         struct ieee80211_supported_band *sband;
1238         struct ieee80211_sub_if_data *sdata = sta->sdata;
1239         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1240         u32 mask, set;
1241
1242         sband = local->hw.wiphy->bands[band];
1243
1244         mask = params->sta_flags_mask;
1245         set = params->sta_flags_set;
1246
1247         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1248                 /*
1249                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1250                  * API but must follow AUTHENTICATED for driver state.
1251                  */
1252                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1253                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1254                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1255                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1256         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1257                 /*
1258                  * TDLS -- everything follows authorized, but
1259                  * only becoming authorized is possible, not
1260                  * going back
1261                  */
1262                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1263                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1264                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1265                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1266                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1267                 }
1268         }
1269
1270         ret = sta_apply_auth_flags(local, sta, mask, set);
1271         if (ret)
1272                 return ret;
1273
1274         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1275                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1276                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1277                 else
1278                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1279         }
1280
1281         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1282                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1283                         set_sta_flag(sta, WLAN_STA_WME);
1284                         sta->sta.wme = true;
1285                 } else {
1286                         clear_sta_flag(sta, WLAN_STA_WME);
1287                         sta->sta.wme = false;
1288                 }
1289         }
1290
1291         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1292                 if (set & BIT(NL80211_STA_FLAG_MFP))
1293                         set_sta_flag(sta, WLAN_STA_MFP);
1294                 else
1295                         clear_sta_flag(sta, WLAN_STA_MFP);
1296         }
1297
1298         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1299                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1300                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1301                 else
1302                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1303         }
1304
1305         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1306                 sta->sta.uapsd_queues = params->uapsd_queues;
1307                 sta->sta.max_sp = params->max_sp;
1308         }
1309
1310         /*
1311          * cfg80211 validates this (1-2007) and allows setting the AID
1312          * only when creating a new station entry
1313          */
1314         if (params->aid)
1315                 sta->sta.aid = params->aid;
1316
1317         /*
1318          * Some of the following updates would be racy if called on an
1319          * existing station, via ieee80211_change_station(). However,
1320          * all such changes are rejected by cfg80211 except for updates
1321          * changing the supported rates on an existing but not yet used
1322          * TDLS peer.
1323          */
1324
1325         if (params->listen_interval >= 0)
1326                 sta->listen_interval = params->listen_interval;
1327
1328         if (params->supported_rates) {
1329                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1330                                          sband, params->supported_rates,
1331                                          params->supported_rates_len,
1332                                          &sta->sta.supp_rates[band]);
1333         }
1334
1335         if (params->ht_capa)
1336                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1337                                                   params->ht_capa, sta);
1338
1339         if (params->vht_capa)
1340                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1341                                                     params->vht_capa, sta);
1342
1343         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1344 #ifdef CONFIG_MAC80211_MESH
1345                 u32 changed = 0;
1346
1347                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1348                         switch (params->plink_state) {
1349                         case NL80211_PLINK_ESTAB:
1350                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1351                                         changed = mesh_plink_inc_estab_count(
1352                                                         sdata);
1353                                 sta->plink_state = params->plink_state;
1354
1355                                 ieee80211_mps_sta_status_update(sta);
1356                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1357                                               sdata->u.mesh.mshcfg.power_mode);
1358                                 break;
1359                         case NL80211_PLINK_LISTEN:
1360                         case NL80211_PLINK_BLOCKED:
1361                         case NL80211_PLINK_OPN_SNT:
1362                         case NL80211_PLINK_OPN_RCVD:
1363                         case NL80211_PLINK_CNF_RCVD:
1364                         case NL80211_PLINK_HOLDING:
1365                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1366                                         changed = mesh_plink_dec_estab_count(
1367                                                         sdata);
1368                                 sta->plink_state = params->plink_state;
1369
1370                                 ieee80211_mps_sta_status_update(sta);
1371                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1372                                                 NL80211_MESH_POWER_UNKNOWN);
1373                                 break;
1374                         default:
1375                                 /*  nothing  */
1376                                 break;
1377                         }
1378                 }
1379
1380                 switch (params->plink_action) {
1381                 case NL80211_PLINK_ACTION_NO_ACTION:
1382                         /* nothing */
1383                         break;
1384                 case NL80211_PLINK_ACTION_OPEN:
1385                         changed |= mesh_plink_open(sta);
1386                         break;
1387                 case NL80211_PLINK_ACTION_BLOCK:
1388                         changed |= mesh_plink_block(sta);
1389                         break;
1390                 }
1391
1392                 if (params->local_pm)
1393                         changed |=
1394                               ieee80211_mps_set_sta_local_pm(sta,
1395                                                              params->local_pm);
1396                 ieee80211_mbss_info_change_notify(sdata, changed);
1397 #endif
1398         }
1399
1400         return 0;
1401 }
1402
1403 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1404                                  u8 *mac, struct station_parameters *params)
1405 {
1406         struct ieee80211_local *local = wiphy_priv(wiphy);
1407         struct sta_info *sta;
1408         struct ieee80211_sub_if_data *sdata;
1409         int err;
1410         int layer2_update;
1411
1412         if (params->vlan) {
1413                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1414
1415                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1416                     sdata->vif.type != NL80211_IFTYPE_AP)
1417                         return -EINVAL;
1418         } else
1419                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1420
1421         if (ether_addr_equal(mac, sdata->vif.addr))
1422                 return -EINVAL;
1423
1424         if (is_multicast_ether_addr(mac))
1425                 return -EINVAL;
1426
1427         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1428         if (!sta)
1429                 return -ENOMEM;
1430
1431         /*
1432          * defaults -- if userspace wants something else we'll
1433          * change it accordingly in sta_apply_parameters()
1434          */
1435         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1436                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1437                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1438         }
1439
1440         err = sta_apply_parameters(local, sta, params);
1441         if (err) {
1442                 sta_info_free(local, sta);
1443                 return err;
1444         }
1445
1446         /*
1447          * for TDLS, rate control should be initialized only when
1448          * rates are known and station is marked authorized
1449          */
1450         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1451                 rate_control_rate_init(sta);
1452
1453         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1454                 sdata->vif.type == NL80211_IFTYPE_AP;
1455
1456         err = sta_info_insert_rcu(sta);
1457         if (err) {
1458                 rcu_read_unlock();
1459                 return err;
1460         }
1461
1462         if (layer2_update)
1463                 ieee80211_send_layer2_update(sta);
1464
1465         rcu_read_unlock();
1466
1467         return 0;
1468 }
1469
1470 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1471                                  u8 *mac)
1472 {
1473         struct ieee80211_sub_if_data *sdata;
1474
1475         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1476
1477         if (mac)
1478                 return sta_info_destroy_addr_bss(sdata, mac);
1479
1480         sta_info_flush(sdata);
1481         return 0;
1482 }
1483
1484 static int ieee80211_change_station(struct wiphy *wiphy,
1485                                     struct net_device *dev, u8 *mac,
1486                                     struct station_parameters *params)
1487 {
1488         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1489         struct ieee80211_local *local = wiphy_priv(wiphy);
1490         struct sta_info *sta;
1491         struct ieee80211_sub_if_data *vlansdata;
1492         enum cfg80211_station_type statype;
1493         int err;
1494
1495         mutex_lock(&local->sta_mtx);
1496
1497         sta = sta_info_get_bss(sdata, mac);
1498         if (!sta) {
1499                 err = -ENOENT;
1500                 goto out_err;
1501         }
1502
1503         switch (sdata->vif.type) {
1504         case NL80211_IFTYPE_MESH_POINT:
1505                 if (sdata->u.mesh.user_mpm)
1506                         statype = CFG80211_STA_MESH_PEER_USER;
1507                 else
1508                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1509                 break;
1510         case NL80211_IFTYPE_ADHOC:
1511                 statype = CFG80211_STA_IBSS;
1512                 break;
1513         case NL80211_IFTYPE_STATION:
1514                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1515                         statype = CFG80211_STA_AP_STA;
1516                         break;
1517                 }
1518                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1519                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1520                 else
1521                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1522                 break;
1523         case NL80211_IFTYPE_AP:
1524         case NL80211_IFTYPE_AP_VLAN:
1525                 statype = CFG80211_STA_AP_CLIENT;
1526                 break;
1527         default:
1528                 err = -EOPNOTSUPP;
1529                 goto out_err;
1530         }
1531
1532         err = cfg80211_check_station_change(wiphy, params, statype);
1533         if (err)
1534                 goto out_err;
1535
1536         if (params->vlan && params->vlan != sta->sdata->dev) {
1537                 bool prev_4addr = false;
1538                 bool new_4addr = false;
1539
1540                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1541
1542                 if (params->vlan->ieee80211_ptr->use_4addr) {
1543                         if (vlansdata->u.vlan.sta) {
1544                                 err = -EBUSY;
1545                                 goto out_err;
1546                         }
1547
1548                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1549                         new_4addr = true;
1550                 }
1551
1552                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1553                     sta->sdata->u.vlan.sta) {
1554                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1555                         prev_4addr = true;
1556                 }
1557
1558                 sta->sdata = vlansdata;
1559
1560                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1561                     prev_4addr != new_4addr) {
1562                         if (new_4addr)
1563                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1564                         else
1565                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1566                 }
1567
1568                 ieee80211_send_layer2_update(sta);
1569         }
1570
1571         err = sta_apply_parameters(local, sta, params);
1572         if (err)
1573                 goto out_err;
1574
1575         /* When peer becomes authorized, init rate control as well */
1576         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1577             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1578                 rate_control_rate_init(sta);
1579
1580         mutex_unlock(&local->sta_mtx);
1581
1582         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1583              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1584             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1585             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1586             sta_info_tx_streams(sta) != 1) {
1587                 ht_dbg(sta->sdata,
1588                        "%pM just authorized and MIMO capable - update SMPS\n",
1589                        sta->sta.addr);
1590                 ieee80211_send_smps_action(sta->sdata,
1591                         sta->sdata->bss->req_smps,
1592                         sta->sta.addr,
1593                         sta->sdata->vif.bss_conf.bssid);
1594         }
1595
1596         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1597             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1598                 ieee80211_recalc_ps(local, -1);
1599                 ieee80211_recalc_ps_vif(sdata);
1600         }
1601
1602         return 0;
1603 out_err:
1604         mutex_unlock(&local->sta_mtx);
1605         return err;
1606 }
1607
1608 #ifdef CONFIG_MAC80211_MESH
1609 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1610                                  u8 *dst, u8 *next_hop)
1611 {
1612         struct ieee80211_sub_if_data *sdata;
1613         struct mesh_path *mpath;
1614         struct sta_info *sta;
1615
1616         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1617
1618         rcu_read_lock();
1619         sta = sta_info_get(sdata, next_hop);
1620         if (!sta) {
1621                 rcu_read_unlock();
1622                 return -ENOENT;
1623         }
1624
1625         mpath = mesh_path_add(sdata, dst);
1626         if (IS_ERR(mpath)) {
1627                 rcu_read_unlock();
1628                 return PTR_ERR(mpath);
1629         }
1630
1631         mesh_path_fix_nexthop(mpath, sta);
1632
1633         rcu_read_unlock();
1634         return 0;
1635 }
1636
1637 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1638                                u8 *dst)
1639 {
1640         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1641
1642         if (dst)
1643                 return mesh_path_del(sdata, dst);
1644
1645         mesh_path_flush_by_iface(sdata);
1646         return 0;
1647 }
1648
1649 static int ieee80211_change_mpath(struct wiphy *wiphy,
1650                                     struct net_device *dev,
1651                                     u8 *dst, u8 *next_hop)
1652 {
1653         struct ieee80211_sub_if_data *sdata;
1654         struct mesh_path *mpath;
1655         struct sta_info *sta;
1656
1657         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1658
1659         rcu_read_lock();
1660
1661         sta = sta_info_get(sdata, next_hop);
1662         if (!sta) {
1663                 rcu_read_unlock();
1664                 return -ENOENT;
1665         }
1666
1667         mpath = mesh_path_lookup(sdata, dst);
1668         if (!mpath) {
1669                 rcu_read_unlock();
1670                 return -ENOENT;
1671         }
1672
1673         mesh_path_fix_nexthop(mpath, sta);
1674
1675         rcu_read_unlock();
1676         return 0;
1677 }
1678
1679 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1680                             struct mpath_info *pinfo)
1681 {
1682         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1683
1684         if (next_hop_sta)
1685                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1686         else
1687                 memset(next_hop, 0, ETH_ALEN);
1688
1689         memset(pinfo, 0, sizeof(*pinfo));
1690
1691         pinfo->generation = mesh_paths_generation;
1692
1693         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1694                         MPATH_INFO_SN |
1695                         MPATH_INFO_METRIC |
1696                         MPATH_INFO_EXPTIME |
1697                         MPATH_INFO_DISCOVERY_TIMEOUT |
1698                         MPATH_INFO_DISCOVERY_RETRIES |
1699                         MPATH_INFO_FLAGS;
1700
1701         pinfo->frame_qlen = mpath->frame_queue.qlen;
1702         pinfo->sn = mpath->sn;
1703         pinfo->metric = mpath->metric;
1704         if (time_before(jiffies, mpath->exp_time))
1705                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1706         pinfo->discovery_timeout =
1707                         jiffies_to_msecs(mpath->discovery_timeout);
1708         pinfo->discovery_retries = mpath->discovery_retries;
1709         if (mpath->flags & MESH_PATH_ACTIVE)
1710                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1711         if (mpath->flags & MESH_PATH_RESOLVING)
1712                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1713         if (mpath->flags & MESH_PATH_SN_VALID)
1714                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1715         if (mpath->flags & MESH_PATH_FIXED)
1716                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1717         if (mpath->flags & MESH_PATH_RESOLVED)
1718                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1719 }
1720
1721 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1722                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1723
1724 {
1725         struct ieee80211_sub_if_data *sdata;
1726         struct mesh_path *mpath;
1727
1728         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1729
1730         rcu_read_lock();
1731         mpath = mesh_path_lookup(sdata, dst);
1732         if (!mpath) {
1733                 rcu_read_unlock();
1734                 return -ENOENT;
1735         }
1736         memcpy(dst, mpath->dst, ETH_ALEN);
1737         mpath_set_pinfo(mpath, next_hop, pinfo);
1738         rcu_read_unlock();
1739         return 0;
1740 }
1741
1742 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1743                                  int idx, u8 *dst, u8 *next_hop,
1744                                  struct mpath_info *pinfo)
1745 {
1746         struct ieee80211_sub_if_data *sdata;
1747         struct mesh_path *mpath;
1748
1749         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1750
1751         rcu_read_lock();
1752         mpath = mesh_path_lookup_by_idx(sdata, idx);
1753         if (!mpath) {
1754                 rcu_read_unlock();
1755                 return -ENOENT;
1756         }
1757         memcpy(dst, mpath->dst, ETH_ALEN);
1758         mpath_set_pinfo(mpath, next_hop, pinfo);
1759         rcu_read_unlock();
1760         return 0;
1761 }
1762
1763 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1764                                 struct net_device *dev,
1765                                 struct mesh_config *conf)
1766 {
1767         struct ieee80211_sub_if_data *sdata;
1768         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1769
1770         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1771         return 0;
1772 }
1773
1774 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1775 {
1776         return (mask >> (parm-1)) & 0x1;
1777 }
1778
1779 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1780                 const struct mesh_setup *setup)
1781 {
1782         u8 *new_ie;
1783         const u8 *old_ie;
1784         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1785                                         struct ieee80211_sub_if_data, u.mesh);
1786
1787         /* allocate information elements */
1788         new_ie = NULL;
1789         old_ie = ifmsh->ie;
1790
1791         if (setup->ie_len) {
1792                 new_ie = kmemdup(setup->ie, setup->ie_len,
1793                                 GFP_KERNEL);
1794                 if (!new_ie)
1795                         return -ENOMEM;
1796         }
1797         ifmsh->ie_len = setup->ie_len;
1798         ifmsh->ie = new_ie;
1799         kfree(old_ie);
1800
1801         /* now copy the rest of the setup parameters */
1802         ifmsh->mesh_id_len = setup->mesh_id_len;
1803         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1804         ifmsh->mesh_sp_id = setup->sync_method;
1805         ifmsh->mesh_pp_id = setup->path_sel_proto;
1806         ifmsh->mesh_pm_id = setup->path_metric;
1807         ifmsh->user_mpm = setup->user_mpm;
1808         ifmsh->mesh_auth_id = setup->auth_id;
1809         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1810         if (setup->is_authenticated)
1811                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1812         if (setup->is_secure)
1813                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1814
1815         /* mcast rate setting in Mesh Node */
1816         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1817                                                 sizeof(setup->mcast_rate));
1818         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1819
1820         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1821         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1822
1823         return 0;
1824 }
1825
1826 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1827                                         struct net_device *dev, u32 mask,
1828                                         const struct mesh_config *nconf)
1829 {
1830         struct mesh_config *conf;
1831         struct ieee80211_sub_if_data *sdata;
1832         struct ieee80211_if_mesh *ifmsh;
1833
1834         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1835         ifmsh = &sdata->u.mesh;
1836
1837         /* Set the config options which we are interested in setting */
1838         conf = &(sdata->u.mesh.mshcfg);
1839         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1840                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1841         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1842                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1843         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1844                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1845         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1846                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1847         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1848                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1849         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1850                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1851         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1852                 conf->element_ttl = nconf->element_ttl;
1853         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1854                 if (ifmsh->user_mpm)
1855                         return -EBUSY;
1856                 conf->auto_open_plinks = nconf->auto_open_plinks;
1857         }
1858         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1859                 conf->dot11MeshNbrOffsetMaxNeighbor =
1860                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1861         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1862                 conf->dot11MeshHWMPmaxPREQretries =
1863                         nconf->dot11MeshHWMPmaxPREQretries;
1864         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1865                 conf->path_refresh_time = nconf->path_refresh_time;
1866         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1867                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1868         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1869                 conf->dot11MeshHWMPactivePathTimeout =
1870                         nconf->dot11MeshHWMPactivePathTimeout;
1871         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1872                 conf->dot11MeshHWMPpreqMinInterval =
1873                         nconf->dot11MeshHWMPpreqMinInterval;
1874         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1875                 conf->dot11MeshHWMPperrMinInterval =
1876                         nconf->dot11MeshHWMPperrMinInterval;
1877         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1878                            mask))
1879                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1880                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1881         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1882                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1883                 ieee80211_mesh_root_setup(ifmsh);
1884         }
1885         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1886                 /* our current gate announcement implementation rides on root
1887                  * announcements, so require this ifmsh to also be a root node
1888                  * */
1889                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1890                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1891                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1892                         ieee80211_mesh_root_setup(ifmsh);
1893                 }
1894                 conf->dot11MeshGateAnnouncementProtocol =
1895                         nconf->dot11MeshGateAnnouncementProtocol;
1896         }
1897         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1898                 conf->dot11MeshHWMPRannInterval =
1899                         nconf->dot11MeshHWMPRannInterval;
1900         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1901                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1902         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1903                 /* our RSSI threshold implementation is supported only for
1904                  * devices that report signal in dBm.
1905                  */
1906                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1907                         return -ENOTSUPP;
1908                 conf->rssi_threshold = nconf->rssi_threshold;
1909         }
1910         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1911                 conf->ht_opmode = nconf->ht_opmode;
1912                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1913                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1914         }
1915         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1916                 conf->dot11MeshHWMPactivePathToRootTimeout =
1917                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1918         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1919                 conf->dot11MeshHWMProotInterval =
1920                         nconf->dot11MeshHWMProotInterval;
1921         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1922                 conf->dot11MeshHWMPconfirmationInterval =
1923                         nconf->dot11MeshHWMPconfirmationInterval;
1924         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1925                 conf->power_mode = nconf->power_mode;
1926                 ieee80211_mps_local_status_update(sdata);
1927         }
1928         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1929                 conf->dot11MeshAwakeWindowDuration =
1930                         nconf->dot11MeshAwakeWindowDuration;
1931         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1932                 conf->plink_timeout = nconf->plink_timeout;
1933         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1934         return 0;
1935 }
1936
1937 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1938                                const struct mesh_config *conf,
1939                                const struct mesh_setup *setup)
1940 {
1941         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1942         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1943         int err;
1944
1945         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1946         err = copy_mesh_setup(ifmsh, setup);
1947         if (err)
1948                 return err;
1949
1950         /* can mesh use other SMPS modes? */
1951         sdata->smps_mode = IEEE80211_SMPS_OFF;
1952         sdata->needed_rx_chains = sdata->local->rx_chains;
1953
1954         mutex_lock(&sdata->local->mtx);
1955         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1956                                         IEEE80211_CHANCTX_SHARED);
1957         mutex_unlock(&sdata->local->mtx);
1958         if (err)
1959                 return err;
1960
1961         return ieee80211_start_mesh(sdata);
1962 }
1963
1964 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1965 {
1966         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1967
1968         ieee80211_stop_mesh(sdata);
1969         mutex_lock(&sdata->local->mtx);
1970         ieee80211_vif_release_channel(sdata);
1971         mutex_unlock(&sdata->local->mtx);
1972
1973         return 0;
1974 }
1975 #endif
1976
1977 static int ieee80211_change_bss(struct wiphy *wiphy,
1978                                 struct net_device *dev,
1979                                 struct bss_parameters *params)
1980 {
1981         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982         enum ieee80211_band band;
1983         u32 changed = 0;
1984
1985         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1986                 return -ENOENT;
1987
1988         band = ieee80211_get_sdata_band(sdata);
1989
1990         if (params->use_cts_prot >= 0) {
1991                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1992                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1993         }
1994         if (params->use_short_preamble >= 0) {
1995                 sdata->vif.bss_conf.use_short_preamble =
1996                         params->use_short_preamble;
1997                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1998         }
1999
2000         if (!sdata->vif.bss_conf.use_short_slot &&
2001             band == IEEE80211_BAND_5GHZ) {
2002                 sdata->vif.bss_conf.use_short_slot = true;
2003                 changed |= BSS_CHANGED_ERP_SLOT;
2004         }
2005
2006         if (params->use_short_slot_time >= 0) {
2007                 sdata->vif.bss_conf.use_short_slot =
2008                         params->use_short_slot_time;
2009                 changed |= BSS_CHANGED_ERP_SLOT;
2010         }
2011
2012         if (params->basic_rates) {
2013                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2014                                          wiphy->bands[band],
2015                                          params->basic_rates,
2016                                          params->basic_rates_len,
2017                                          &sdata->vif.bss_conf.basic_rates);
2018                 changed |= BSS_CHANGED_BASIC_RATES;
2019         }
2020
2021         if (params->ap_isolate >= 0) {
2022                 if (params->ap_isolate)
2023                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2024                 else
2025                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2026         }
2027
2028         if (params->ht_opmode >= 0) {
2029                 sdata->vif.bss_conf.ht_operation_mode =
2030                         (u16) params->ht_opmode;
2031                 changed |= BSS_CHANGED_HT;
2032         }
2033
2034         if (params->p2p_ctwindow >= 0) {
2035                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2036                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2037                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2038                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2039                 changed |= BSS_CHANGED_P2P_PS;
2040         }
2041
2042         if (params->p2p_opp_ps > 0) {
2043                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2044                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2045                 changed |= BSS_CHANGED_P2P_PS;
2046         } else if (params->p2p_opp_ps == 0) {
2047                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2048                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2049                 changed |= BSS_CHANGED_P2P_PS;
2050         }
2051
2052         ieee80211_bss_info_change_notify(sdata, changed);
2053
2054         return 0;
2055 }
2056
2057 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2058                                     struct net_device *dev,
2059                                     struct ieee80211_txq_params *params)
2060 {
2061         struct ieee80211_local *local = wiphy_priv(wiphy);
2062         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2063         struct ieee80211_tx_queue_params p;
2064
2065         if (!local->ops->conf_tx)
2066                 return -EOPNOTSUPP;
2067
2068         if (local->hw.queues < IEEE80211_NUM_ACS)
2069                 return -EOPNOTSUPP;
2070
2071         memset(&p, 0, sizeof(p));
2072         p.aifs = params->aifs;
2073         p.cw_max = params->cwmax;
2074         p.cw_min = params->cwmin;
2075         p.txop = params->txop;
2076
2077         /*
2078          * Setting tx queue params disables u-apsd because it's only
2079          * called in master mode.
2080          */
2081         p.uapsd = false;
2082
2083         sdata->tx_conf[params->ac] = p;
2084         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2085                 wiphy_debug(local->hw.wiphy,
2086                             "failed to set TX queue parameters for AC %d\n",
2087                             params->ac);
2088                 return -EINVAL;
2089         }
2090
2091         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2092
2093         return 0;
2094 }
2095
2096 #ifdef CONFIG_PM
2097 static int ieee80211_suspend(struct wiphy *wiphy,
2098                              struct cfg80211_wowlan *wowlan)
2099 {
2100         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2101 }
2102
2103 static int ieee80211_resume(struct wiphy *wiphy)
2104 {
2105         return __ieee80211_resume(wiphy_priv(wiphy));
2106 }
2107 #else
2108 #define ieee80211_suspend NULL
2109 #define ieee80211_resume NULL
2110 #endif
2111
2112 static int ieee80211_scan(struct wiphy *wiphy,
2113                           struct cfg80211_scan_request *req)
2114 {
2115         struct ieee80211_sub_if_data *sdata;
2116
2117         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2118
2119         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2120         case NL80211_IFTYPE_STATION:
2121         case NL80211_IFTYPE_ADHOC:
2122         case NL80211_IFTYPE_MESH_POINT:
2123         case NL80211_IFTYPE_P2P_CLIENT:
2124         case NL80211_IFTYPE_P2P_DEVICE:
2125                 break;
2126         case NL80211_IFTYPE_P2P_GO:
2127                 if (sdata->local->ops->hw_scan)
2128                         break;
2129                 /*
2130                  * FIXME: implement NoA while scanning in software,
2131                  * for now fall through to allow scanning only when
2132                  * beaconing hasn't been configured yet
2133                  */
2134         case NL80211_IFTYPE_AP:
2135                 /*
2136                  * If the scan has been forced (and the driver supports
2137                  * forcing), don't care about being beaconing already.
2138                  * This will create problems to the attached stations (e.g. all
2139                  * the  frames sent while scanning on other channel will be
2140                  * lost)
2141                  */
2142                 if (sdata->u.ap.beacon &&
2143                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2144                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2145                         return -EOPNOTSUPP;
2146                 break;
2147         default:
2148                 return -EOPNOTSUPP;
2149         }
2150
2151         return ieee80211_request_scan(sdata, req);
2152 }
2153
2154 static int
2155 ieee80211_sched_scan_start(struct wiphy *wiphy,
2156                            struct net_device *dev,
2157                            struct cfg80211_sched_scan_request *req)
2158 {
2159         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2160
2161         if (!sdata->local->ops->sched_scan_start)
2162                 return -EOPNOTSUPP;
2163
2164         return ieee80211_request_sched_scan_start(sdata, req);
2165 }
2166
2167 static int
2168 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2169 {
2170         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2171
2172         if (!sdata->local->ops->sched_scan_stop)
2173                 return -EOPNOTSUPP;
2174
2175         return ieee80211_request_sched_scan_stop(sdata);
2176 }
2177
2178 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2179                           struct cfg80211_auth_request *req)
2180 {
2181         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2182 }
2183
2184 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2185                            struct cfg80211_assoc_request *req)
2186 {
2187         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2188 }
2189
2190 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2191                             struct cfg80211_deauth_request *req)
2192 {
2193         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2194 }
2195
2196 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2197                               struct cfg80211_disassoc_request *req)
2198 {
2199         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2200 }
2201
2202 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2203                                struct cfg80211_ibss_params *params)
2204 {
2205         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2206 }
2207
2208 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2209 {
2210         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2211 }
2212
2213 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2214                                     int rate[IEEE80211_NUM_BANDS])
2215 {
2216         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2217
2218         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2219                sizeof(int) * IEEE80211_NUM_BANDS);
2220
2221         return 0;
2222 }
2223
2224 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2225 {
2226         struct ieee80211_local *local = wiphy_priv(wiphy);
2227         int err;
2228
2229         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2230                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2231
2232                 if (err)
2233                         return err;
2234         }
2235
2236         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2237                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2238
2239                 if (err)
2240                         return err;
2241         }
2242
2243         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2244                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2245
2246                 if (err)
2247                         return err;
2248         }
2249
2250         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2251                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2252                         return -EINVAL;
2253                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2254         }
2255         if (changed & WIPHY_PARAM_RETRY_LONG) {
2256                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2257                         return -EINVAL;
2258                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2259         }
2260         if (changed &
2261             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2262                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2263
2264         return 0;
2265 }
2266
2267 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2268                                   struct wireless_dev *wdev,
2269                                   enum nl80211_tx_power_setting type, int mbm)
2270 {
2271         struct ieee80211_local *local = wiphy_priv(wiphy);
2272         struct ieee80211_sub_if_data *sdata;
2273
2274         if (wdev) {
2275                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2276
2277                 switch (type) {
2278                 case NL80211_TX_POWER_AUTOMATIC:
2279                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2280                         break;
2281                 case NL80211_TX_POWER_LIMITED:
2282                 case NL80211_TX_POWER_FIXED:
2283                         if (mbm < 0 || (mbm % 100))
2284                                 return -EOPNOTSUPP;
2285                         sdata->user_power_level = MBM_TO_DBM(mbm);
2286                         break;
2287                 }
2288
2289                 ieee80211_recalc_txpower(sdata);
2290
2291                 return 0;
2292         }
2293
2294         switch (type) {
2295         case NL80211_TX_POWER_AUTOMATIC:
2296                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2297                 break;
2298         case NL80211_TX_POWER_LIMITED:
2299         case NL80211_TX_POWER_FIXED:
2300                 if (mbm < 0 || (mbm % 100))
2301                         return -EOPNOTSUPP;
2302                 local->user_power_level = MBM_TO_DBM(mbm);
2303                 break;
2304         }
2305
2306         mutex_lock(&local->iflist_mtx);
2307         list_for_each_entry(sdata, &local->interfaces, list)
2308                 sdata->user_power_level = local->user_power_level;
2309         list_for_each_entry(sdata, &local->interfaces, list)
2310                 ieee80211_recalc_txpower(sdata);
2311         mutex_unlock(&local->iflist_mtx);
2312
2313         return 0;
2314 }
2315
2316 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2317                                   struct wireless_dev *wdev,
2318                                   int *dbm)
2319 {
2320         struct ieee80211_local *local = wiphy_priv(wiphy);
2321         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2322
2323         if (!local->use_chanctx)
2324                 *dbm = local->hw.conf.power_level;
2325         else
2326                 *dbm = sdata->vif.bss_conf.txpower;
2327
2328         return 0;
2329 }
2330
2331 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2332                                   const u8 *addr)
2333 {
2334         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2335
2336         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2337
2338         return 0;
2339 }
2340
2341 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2342 {
2343         struct ieee80211_local *local = wiphy_priv(wiphy);
2344
2345         drv_rfkill_poll(local);
2346 }
2347
2348 #ifdef CONFIG_NL80211_TESTMODE
2349 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2350                                   struct wireless_dev *wdev,
2351                                   void *data, int len)
2352 {
2353         struct ieee80211_local *local = wiphy_priv(wiphy);
2354         struct ieee80211_vif *vif = NULL;
2355
2356         if (!local->ops->testmode_cmd)
2357                 return -EOPNOTSUPP;
2358
2359         if (wdev) {
2360                 struct ieee80211_sub_if_data *sdata;
2361
2362                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2363                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2364                         vif = &sdata->vif;
2365         }
2366
2367         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2368 }
2369
2370 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2371                                    struct sk_buff *skb,
2372                                    struct netlink_callback *cb,
2373                                    void *data, int len)
2374 {
2375         struct ieee80211_local *local = wiphy_priv(wiphy);
2376
2377         if (!local->ops->testmode_dump)
2378                 return -EOPNOTSUPP;
2379
2380         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2381 }
2382 #endif
2383
2384 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2385                                 enum ieee80211_smps_mode smps_mode)
2386 {
2387         struct sta_info *sta;
2388         enum ieee80211_smps_mode old_req;
2389         int i;
2390
2391         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2392                 return -EINVAL;
2393
2394         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2395                 return 0;
2396
2397         old_req = sdata->u.ap.req_smps;
2398         sdata->u.ap.req_smps = smps_mode;
2399
2400         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2401         if (old_req == smps_mode ||
2402             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2403                 return 0;
2404
2405          /* If no associated stations, there's no need to do anything */
2406         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2407                 sdata->smps_mode = smps_mode;
2408                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2409                 return 0;
2410         }
2411
2412         ht_dbg(sdata,
2413                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2414                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2415
2416         mutex_lock(&sdata->local->sta_mtx);
2417         for (i = 0; i < STA_HASH_SIZE; i++) {
2418                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2419                                 lockdep_is_held(&sdata->local->sta_mtx));
2420                      sta;
2421                      sta = rcu_dereference_protected(sta->hnext,
2422                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2423                         /*
2424                          * Only stations associated to our AP and
2425                          * associated VLANs
2426                          */
2427                         if (sta->sdata->bss != &sdata->u.ap)
2428                                 continue;
2429
2430                         /* This station doesn't support MIMO - skip it */
2431                         if (sta_info_tx_streams(sta) == 1)
2432                                 continue;
2433
2434                         /*
2435                          * Don't wake up a STA just to send the action frame
2436                          * unless we are getting more restrictive.
2437                          */
2438                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2439                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2440                                                            smps_mode)) {
2441                                 ht_dbg(sdata,
2442                                        "Won't send SMPS to sleeping STA %pM\n",
2443                                        sta->sta.addr);
2444                                 continue;
2445                         }
2446
2447                         /*
2448                          * If the STA is not authorized, wait until it gets
2449                          * authorized and the action frame will be sent then.
2450                          */
2451                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2452                                 continue;
2453
2454                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2455                         ieee80211_send_smps_action(sdata, smps_mode,
2456                                                    sta->sta.addr,
2457                                                    sdata->vif.bss_conf.bssid);
2458                 }
2459         }
2460         mutex_unlock(&sdata->local->sta_mtx);
2461
2462         sdata->smps_mode = smps_mode;
2463         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2464
2465         return 0;
2466 }
2467
2468 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2469                                  enum ieee80211_smps_mode smps_mode)
2470 {
2471         const u8 *ap;
2472         enum ieee80211_smps_mode old_req;
2473         int err;
2474
2475         lockdep_assert_held(&sdata->wdev.mtx);
2476
2477         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2478                 return -EINVAL;
2479
2480         old_req = sdata->u.mgd.req_smps;
2481         sdata->u.mgd.req_smps = smps_mode;
2482
2483         if (old_req == smps_mode &&
2484             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2485                 return 0;
2486
2487         /*
2488          * If not associated, or current association is not an HT
2489          * association, there's no need to do anything, just store
2490          * the new value until we associate.
2491          */
2492         if (!sdata->u.mgd.associated ||
2493             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2494                 return 0;
2495
2496         ap = sdata->u.mgd.associated->bssid;
2497
2498         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2499                 if (sdata->u.mgd.powersave)
2500                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2501                 else
2502                         smps_mode = IEEE80211_SMPS_OFF;
2503         }
2504
2505         /* send SM PS frame to AP */
2506         err = ieee80211_send_smps_action(sdata, smps_mode,
2507                                          ap, ap);
2508         if (err)
2509                 sdata->u.mgd.req_smps = old_req;
2510
2511         return err;
2512 }
2513
2514 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2515                                     bool enabled, int timeout)
2516 {
2517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2518         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2519
2520         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2521                 return -EOPNOTSUPP;
2522
2523         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2524                 return -EOPNOTSUPP;
2525
2526         if (enabled == sdata->u.mgd.powersave &&
2527             timeout == local->dynamic_ps_forced_timeout)
2528                 return 0;
2529
2530         sdata->u.mgd.powersave = enabled;
2531         local->dynamic_ps_forced_timeout = timeout;
2532
2533         /* no change, but if automatic follow powersave */
2534         sdata_lock(sdata);
2535         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2536         sdata_unlock(sdata);
2537
2538         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2539                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2540
2541         ieee80211_recalc_ps(local, -1);
2542         ieee80211_recalc_ps_vif(sdata);
2543
2544         return 0;
2545 }
2546
2547 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2548                                          struct net_device *dev,
2549                                          s32 rssi_thold, u32 rssi_hyst)
2550 {
2551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2552         struct ieee80211_vif *vif = &sdata->vif;
2553         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2554
2555         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2556             rssi_hyst == bss_conf->cqm_rssi_hyst)
2557                 return 0;
2558
2559         bss_conf->cqm_rssi_thold = rssi_thold;
2560         bss_conf->cqm_rssi_hyst = rssi_hyst;
2561
2562         /* tell the driver upon association, unless already associated */
2563         if (sdata->u.mgd.associated &&
2564             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2565                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2566
2567         return 0;
2568 }
2569
2570 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2571                                       struct net_device *dev,
2572                                       const u8 *addr,
2573                                       const struct cfg80211_bitrate_mask *mask)
2574 {
2575         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2576         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2577         int i, ret;
2578
2579         if (!ieee80211_sdata_running(sdata))
2580                 return -ENETDOWN;
2581
2582         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2583                 ret = drv_set_bitrate_mask(local, sdata, mask);
2584                 if (ret)
2585                         return ret;
2586         }
2587
2588         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2589                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2590                 int j;
2591
2592                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2593                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2594                        sizeof(mask->control[i].ht_mcs));
2595
2596                 sdata->rc_has_mcs_mask[i] = false;
2597                 if (!sband)
2598                         continue;
2599
2600                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2601                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2602                                 sdata->rc_has_mcs_mask[i] = true;
2603                                 break;
2604                         }
2605         }
2606
2607         return 0;
2608 }
2609
2610 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2611                                     struct ieee80211_sub_if_data *sdata,
2612                                     struct ieee80211_channel *channel,
2613                                     unsigned int duration, u64 *cookie,
2614                                     struct sk_buff *txskb,
2615                                     enum ieee80211_roc_type type)
2616 {
2617         struct ieee80211_roc_work *roc, *tmp;
2618         bool queued = false;
2619         int ret;
2620
2621         lockdep_assert_held(&local->mtx);
2622
2623         if (local->use_chanctx && !local->ops->remain_on_channel)
2624                 return -EOPNOTSUPP;
2625
2626         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2627         if (!roc)
2628                 return -ENOMEM;
2629
2630         roc->chan = channel;
2631         roc->duration = duration;
2632         roc->req_duration = duration;
2633         roc->frame = txskb;
2634         roc->type = type;
2635         roc->mgmt_tx_cookie = (unsigned long)txskb;
2636         roc->sdata = sdata;
2637         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2638         INIT_LIST_HEAD(&roc->dependents);
2639
2640         /* if there's one pending or we're scanning, queue this one */
2641         if (!list_empty(&local->roc_list) ||
2642             local->scanning || local->radar_detect_enabled)
2643                 goto out_check_combine;
2644
2645         /* if not HW assist, just queue & schedule work */
2646         if (!local->ops->remain_on_channel) {
2647                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2648                 goto out_queue;
2649         }
2650
2651         /* otherwise actually kick it off here (for error handling) */
2652
2653         /*
2654          * If the duration is zero, then the driver
2655          * wouldn't actually do anything. Set it to
2656          * 10 for now.
2657          *
2658          * TODO: cancel the off-channel operation
2659          *       when we get the SKB's TX status and
2660          *       the wait time was zero before.
2661          */
2662         if (!duration)
2663                 duration = 10;
2664
2665         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2666         if (ret) {
2667                 kfree(roc);
2668                 return ret;
2669         }
2670
2671         roc->started = true;
2672         goto out_queue;
2673
2674  out_check_combine:
2675         list_for_each_entry(tmp, &local->roc_list, list) {
2676                 if (tmp->chan != channel || tmp->sdata != sdata)
2677                         continue;
2678
2679                 /*
2680                  * Extend this ROC if possible:
2681                  *
2682                  * If it hasn't started yet, just increase the duration
2683                  * and add the new one to the list of dependents.
2684                  * If the type of the new ROC has higher priority, modify the
2685                  * type of the previous one to match that of the new one.
2686                  */
2687                 if (!tmp->started) {
2688                         list_add_tail(&roc->list, &tmp->dependents);
2689                         tmp->duration = max(tmp->duration, roc->duration);
2690                         tmp->type = max(tmp->type, roc->type);
2691                         queued = true;
2692                         break;
2693                 }
2694
2695                 /* If it has already started, it's more difficult ... */
2696                 if (local->ops->remain_on_channel) {
2697                         unsigned long j = jiffies;
2698
2699                         /*
2700                          * In the offloaded ROC case, if it hasn't begun, add
2701                          * this new one to the dependent list to be handled
2702                          * when the master one begins. If it has begun,
2703                          * check that there's still a minimum time left and
2704                          * if so, start this one, transmitting the frame, but
2705                          * add it to the list directly after this one with
2706                          * a reduced time so we'll ask the driver to execute
2707                          * it right after finishing the previous one, in the
2708                          * hope that it'll also be executed right afterwards,
2709                          * effectively extending the old one.
2710                          * If there's no minimum time left, just add it to the
2711                          * normal list.
2712                          * TODO: the ROC type is ignored here, assuming that it
2713                          * is better to immediately use the current ROC.
2714                          */
2715                         if (!tmp->hw_begun) {
2716                                 list_add_tail(&roc->list, &tmp->dependents);
2717                                 queued = true;
2718                                 break;
2719                         }
2720
2721                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2722                                         tmp->hw_start_time +
2723                                         msecs_to_jiffies(tmp->duration))) {
2724                                 int new_dur;
2725
2726                                 ieee80211_handle_roc_started(roc);
2727
2728                                 new_dur = roc->duration -
2729                                           jiffies_to_msecs(tmp->hw_start_time +
2730                                                            msecs_to_jiffies(
2731                                                                 tmp->duration) -
2732                                                            j);
2733
2734                                 if (new_dur > 0) {
2735                                         /* add right after tmp */
2736                                         list_add(&roc->list, &tmp->list);
2737                                 } else {
2738                                         list_add_tail(&roc->list,
2739                                                       &tmp->dependents);
2740                                 }
2741                                 queued = true;
2742                         }
2743                 } else if (del_timer_sync(&tmp->work.timer)) {
2744                         unsigned long new_end;
2745
2746                         /*
2747                          * In the software ROC case, cancel the timer, if
2748                          * that fails then the finish work is already
2749                          * queued/pending and thus we queue the new ROC
2750                          * normally, if that succeeds then we can extend
2751                          * the timer duration and TX the frame (if any.)
2752                          */
2753
2754                         list_add_tail(&roc->list, &tmp->dependents);
2755                         queued = true;
2756
2757                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2758
2759                         /* ok, it was started & we canceled timer */
2760                         if (time_after(new_end, tmp->work.timer.expires))
2761                                 mod_timer(&tmp->work.timer, new_end);
2762                         else
2763                                 add_timer(&tmp->work.timer);
2764
2765                         ieee80211_handle_roc_started(roc);
2766                 }
2767                 break;
2768         }
2769
2770  out_queue:
2771         if (!queued)
2772                 list_add_tail(&roc->list, &local->roc_list);
2773
2774         /*
2775          * cookie is either the roc cookie (for normal roc)
2776          * or the SKB (for mgmt TX)
2777          */
2778         if (!txskb) {
2779                 /* local->mtx protects this */
2780                 local->roc_cookie_counter++;
2781                 roc->cookie = local->roc_cookie_counter;
2782                 /* wow, you wrapped 64 bits ... more likely a bug */
2783                 if (WARN_ON(roc->cookie == 0)) {
2784                         roc->cookie = 1;
2785                         local->roc_cookie_counter++;
2786                 }
2787                 *cookie = roc->cookie;
2788         } else {
2789                 *cookie = (unsigned long)txskb;
2790         }
2791
2792         return 0;
2793 }
2794
2795 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2796                                        struct wireless_dev *wdev,
2797                                        struct ieee80211_channel *chan,
2798                                        unsigned int duration,
2799                                        u64 *cookie)
2800 {
2801         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2802         struct ieee80211_local *local = sdata->local;
2803         int ret;
2804
2805         mutex_lock(&local->mtx);
2806         ret = ieee80211_start_roc_work(local, sdata, chan,
2807                                        duration, cookie, NULL,
2808                                        IEEE80211_ROC_TYPE_NORMAL);
2809         mutex_unlock(&local->mtx);
2810
2811         return ret;
2812 }
2813
2814 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2815                                 u64 cookie, bool mgmt_tx)
2816 {
2817         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2818         int ret;
2819
2820         mutex_lock(&local->mtx);
2821         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2822                 struct ieee80211_roc_work *dep, *tmp2;
2823
2824                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2825                         if (!mgmt_tx && dep->cookie != cookie)
2826                                 continue;
2827                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2828                                 continue;
2829                         /* found dependent item -- just remove it */
2830                         list_del(&dep->list);
2831                         mutex_unlock(&local->mtx);
2832
2833                         ieee80211_roc_notify_destroy(dep, true);
2834                         return 0;
2835                 }
2836
2837                 if (!mgmt_tx && roc->cookie != cookie)
2838                         continue;
2839                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2840                         continue;
2841
2842                 found = roc;
2843                 break;
2844         }
2845
2846         if (!found) {
2847                 mutex_unlock(&local->mtx);
2848                 return -ENOENT;
2849         }
2850
2851         /*
2852          * We found the item to cancel, so do that. Note that it
2853          * may have dependents, which we also cancel (and send
2854          * the expired signal for.) Not doing so would be quite
2855          * tricky here, but we may need to fix it later.
2856          */
2857
2858         if (local->ops->remain_on_channel) {
2859                 if (found->started) {
2860                         ret = drv_cancel_remain_on_channel(local);
2861                         if (WARN_ON_ONCE(ret)) {
2862                                 mutex_unlock(&local->mtx);
2863                                 return ret;
2864                         }
2865                 }
2866
2867                 list_del(&found->list);
2868
2869                 if (found->started)
2870                         ieee80211_start_next_roc(local);
2871                 mutex_unlock(&local->mtx);
2872
2873                 ieee80211_roc_notify_destroy(found, true);
2874         } else {
2875                 /* work may be pending so use it all the time */
2876                 found->abort = true;
2877                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2878
2879                 mutex_unlock(&local->mtx);
2880
2881                 /* work will clean up etc */
2882                 flush_delayed_work(&found->work);
2883                 WARN_ON(!found->to_be_freed);
2884                 kfree(found);
2885         }
2886
2887         return 0;
2888 }
2889
2890 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2891                                               struct wireless_dev *wdev,
2892                                               u64 cookie)
2893 {
2894         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2895         struct ieee80211_local *local = sdata->local;
2896
2897         return ieee80211_cancel_roc(local, cookie, false);
2898 }
2899
2900 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2901                                            struct net_device *dev,
2902                                            struct cfg80211_chan_def *chandef)
2903 {
2904         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2905         struct ieee80211_local *local = sdata->local;
2906         unsigned long timeout;
2907         int err;
2908
2909         mutex_lock(&local->mtx);
2910         if (!list_empty(&local->roc_list) || local->scanning) {
2911                 err = -EBUSY;
2912                 goto out_unlock;
2913         }
2914
2915         /* whatever, but channel contexts should not complain about that one */
2916         sdata->smps_mode = IEEE80211_SMPS_OFF;
2917         sdata->needed_rx_chains = local->rx_chains;
2918         sdata->radar_required = true;
2919
2920         err = ieee80211_vif_use_channel(sdata, chandef,
2921                                         IEEE80211_CHANCTX_SHARED);
2922         if (err)
2923                 goto out_unlock;
2924
2925         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2926         ieee80211_queue_delayed_work(&sdata->local->hw,
2927                                      &sdata->dfs_cac_timer_work, timeout);
2928
2929  out_unlock:
2930         mutex_unlock(&local->mtx);
2931         return err;
2932 }
2933
2934 static struct cfg80211_beacon_data *
2935 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2936 {
2937         struct cfg80211_beacon_data *new_beacon;
2938         u8 *pos;
2939         int len;
2940
2941         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2942               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2943               beacon->probe_resp_len;
2944
2945         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2946         if (!new_beacon)
2947                 return NULL;
2948
2949         pos = (u8 *)(new_beacon + 1);
2950         if (beacon->head_len) {
2951                 new_beacon->head_len = beacon->head_len;
2952                 new_beacon->head = pos;
2953                 memcpy(pos, beacon->head, beacon->head_len);
2954                 pos += beacon->head_len;
2955         }
2956         if (beacon->tail_len) {
2957                 new_beacon->tail_len = beacon->tail_len;
2958                 new_beacon->tail = pos;
2959                 memcpy(pos, beacon->tail, beacon->tail_len);
2960                 pos += beacon->tail_len;
2961         }
2962         if (beacon->beacon_ies_len) {
2963                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2964                 new_beacon->beacon_ies = pos;
2965                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2966                 pos += beacon->beacon_ies_len;
2967         }
2968         if (beacon->proberesp_ies_len) {
2969                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2970                 new_beacon->proberesp_ies = pos;
2971                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2972                 pos += beacon->proberesp_ies_len;
2973         }
2974         if (beacon->assocresp_ies_len) {
2975                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2976                 new_beacon->assocresp_ies = pos;
2977                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2978                 pos += beacon->assocresp_ies_len;
2979         }
2980         if (beacon->probe_resp_len) {
2981                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2982                 beacon->probe_resp = pos;
2983                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2984                 pos += beacon->probe_resp_len;
2985         }
2986
2987         return new_beacon;
2988 }
2989
2990 void ieee80211_csa_finalize_work(struct work_struct *work)
2991 {
2992         struct ieee80211_sub_if_data *sdata =
2993                 container_of(work, struct ieee80211_sub_if_data,
2994                              csa_finalize_work);
2995         struct ieee80211_local *local = sdata->local;
2996         int err, changed = 0;
2997
2998         sdata_lock(sdata);
2999         /* AP might have been stopped while waiting for the lock. */
3000         if (!sdata->vif.csa_active)
3001                 goto unlock;
3002
3003         if (!ieee80211_sdata_running(sdata))
3004                 goto unlock;
3005
3006         sdata->radar_required = sdata->csa_radar_required;
3007         mutex_lock(&local->mtx);
3008         err = ieee80211_vif_change_channel(sdata, &changed);
3009         mutex_unlock(&local->mtx);
3010         if (WARN_ON(err < 0))
3011                 goto unlock;
3012
3013         if (!local->use_chanctx) {
3014                 local->_oper_chandef = sdata->csa_chandef;
3015                 ieee80211_hw_config(local, 0);
3016         }
3017
3018         ieee80211_bss_info_change_notify(sdata, changed);
3019
3020         sdata->vif.csa_active = false;
3021         switch (sdata->vif.type) {
3022         case NL80211_IFTYPE_AP:
3023                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3024                 if (err < 0)
3025                         goto unlock;
3026
3027                 changed |= err;
3028                 kfree(sdata->u.ap.next_beacon);
3029                 sdata->u.ap.next_beacon = NULL;
3030
3031                 ieee80211_bss_info_change_notify(sdata, err);
3032                 break;
3033         case NL80211_IFTYPE_ADHOC:
3034                 ieee80211_ibss_finish_csa(sdata);
3035                 break;
3036 #ifdef CONFIG_MAC80211_MESH
3037         case NL80211_IFTYPE_MESH_POINT:
3038                 err = ieee80211_mesh_finish_csa(sdata);
3039                 if (err < 0)
3040                         goto unlock;
3041                 break;
3042 #endif
3043         default:
3044                 WARN_ON(1);
3045                 goto unlock;
3046         }
3047
3048         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3049                                         IEEE80211_MAX_QUEUE_MAP,
3050                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3051
3052         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3053
3054 unlock:
3055         sdata_unlock(sdata);
3056 }
3057
3058 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3059                              struct cfg80211_csa_settings *params)
3060 {
3061         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3062         struct ieee80211_local *local = sdata->local;
3063         struct ieee80211_chanctx_conf *chanctx_conf;
3064         struct ieee80211_chanctx *chanctx;
3065         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3066         int err, num_chanctx;
3067
3068         lockdep_assert_held(&sdata->wdev.mtx);
3069
3070         if (!list_empty(&local->roc_list) || local->scanning)
3071                 return -EBUSY;
3072
3073         if (sdata->wdev.cac_started)
3074                 return -EBUSY;
3075
3076         if (cfg80211_chandef_identical(&params->chandef,
3077                                        &sdata->vif.bss_conf.chandef))
3078                 return -EINVAL;
3079
3080         rcu_read_lock();
3081         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3082         if (!chanctx_conf) {
3083                 rcu_read_unlock();
3084                 return -EBUSY;
3085         }
3086
3087         /* don't handle for multi-VIF cases */
3088         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3089         if (chanctx->refcount > 1) {
3090                 rcu_read_unlock();
3091                 return -EBUSY;
3092         }
3093         num_chanctx = 0;
3094         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3095                 num_chanctx++;
3096         rcu_read_unlock();
3097
3098         if (num_chanctx > 1)
3099                 return -EBUSY;
3100
3101         /* don't allow another channel switch if one is already active. */
3102         if (sdata->vif.csa_active)
3103                 return -EBUSY;
3104
3105         switch (sdata->vif.type) {
3106         case NL80211_IFTYPE_AP:
3107                 sdata->csa_counter_offset_beacon =
3108                         params->counter_offset_beacon;
3109                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3110                 sdata->u.ap.next_beacon =
3111                         cfg80211_beacon_dup(&params->beacon_after);
3112                 if (!sdata->u.ap.next_beacon)
3113                         return -ENOMEM;
3114
3115                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3116                 if (err < 0) {
3117                         kfree(sdata->u.ap.next_beacon);
3118                         return err;
3119                 }
3120                 break;
3121         case NL80211_IFTYPE_ADHOC:
3122                 if (!sdata->vif.bss_conf.ibss_joined)
3123                         return -EINVAL;
3124
3125                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3126                         return -EINVAL;
3127
3128                 switch (params->chandef.width) {
3129                 case NL80211_CHAN_WIDTH_40:
3130                         if (cfg80211_get_chandef_type(&params->chandef) !=
3131                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3132                                 return -EINVAL;
3133                 case NL80211_CHAN_WIDTH_5:
3134                 case NL80211_CHAN_WIDTH_10:
3135                 case NL80211_CHAN_WIDTH_20_NOHT:
3136                 case NL80211_CHAN_WIDTH_20:
3137                         break;
3138                 default:
3139                         return -EINVAL;
3140                 }
3141
3142                 /* changes into another band are not supported */
3143                 if (sdata->u.ibss.chandef.chan->band !=
3144                     params->chandef.chan->band)
3145                         return -EINVAL;
3146
3147                 err = ieee80211_ibss_csa_beacon(sdata, params);
3148                 if (err < 0)
3149                         return err;
3150                 break;
3151 #ifdef CONFIG_MAC80211_MESH
3152         case NL80211_IFTYPE_MESH_POINT:
3153                 ifmsh = &sdata->u.mesh;
3154
3155                 if (!ifmsh->mesh_id)
3156                         return -EINVAL;
3157
3158                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3159                         return -EINVAL;
3160
3161                 /* changes into another band are not supported */
3162                 if (sdata->vif.bss_conf.chandef.chan->band !=
3163                     params->chandef.chan->band)
3164                         return -EINVAL;
3165
3166                 ifmsh->chsw_init = true;
3167                 if (!ifmsh->pre_value)
3168                         ifmsh->pre_value = 1;
3169                 else
3170                         ifmsh->pre_value++;
3171
3172                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3173                 if (err < 0) {
3174                         ifmsh->chsw_init = false;
3175                         return err;
3176                 }
3177                 break;
3178 #endif
3179         default:
3180                 return -EOPNOTSUPP;
3181         }
3182
3183         sdata->csa_radar_required = params->radar_required;
3184
3185         if (params->block_tx)
3186                 ieee80211_stop_queues_by_reason(&local->hw,
3187                                 IEEE80211_MAX_QUEUE_MAP,
3188                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3189
3190         sdata->csa_chandef = params->chandef;
3191         sdata->vif.csa_active = true;
3192
3193         ieee80211_bss_info_change_notify(sdata, err);
3194         drv_channel_switch_beacon(sdata, &params->chandef);
3195
3196         return 0;
3197 }
3198
3199 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3200                              struct cfg80211_mgmt_tx_params *params,
3201                              u64 *cookie)
3202 {
3203         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3204         struct ieee80211_local *local = sdata->local;
3205         struct sk_buff *skb;
3206         struct sta_info *sta;
3207         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3208         bool need_offchan = false;
3209         u32 flags;
3210         int ret;
3211
3212         if (params->dont_wait_for_ack)
3213                 flags = IEEE80211_TX_CTL_NO_ACK;
3214         else
3215                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3216                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3217
3218         if (params->no_cck)
3219                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3220
3221         switch (sdata->vif.type) {
3222         case NL80211_IFTYPE_ADHOC:
3223                 if (!sdata->vif.bss_conf.ibss_joined)
3224                         need_offchan = true;
3225                 /* fall through */
3226 #ifdef CONFIG_MAC80211_MESH
3227         case NL80211_IFTYPE_MESH_POINT:
3228                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3229                     !sdata->u.mesh.mesh_id_len)
3230                         need_offchan = true;
3231                 /* fall through */
3232 #endif
3233         case NL80211_IFTYPE_AP:
3234         case NL80211_IFTYPE_AP_VLAN:
3235         case NL80211_IFTYPE_P2P_GO:
3236                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3237                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3238                     !rcu_access_pointer(sdata->bss->beacon))
3239                         need_offchan = true;
3240                 if (!ieee80211_is_action(mgmt->frame_control) ||
3241                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3242                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3243                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3244                         break;
3245                 rcu_read_lock();
3246                 sta = sta_info_get(sdata, mgmt->da);
3247                 rcu_read_unlock();
3248                 if (!sta)
3249                         return -ENOLINK;
3250                 break;
3251         case NL80211_IFTYPE_STATION:
3252         case NL80211_IFTYPE_P2P_CLIENT:
3253                 if (!sdata->u.mgd.associated)
3254                         need_offchan = true;
3255                 break;
3256         case NL80211_IFTYPE_P2P_DEVICE:
3257                 need_offchan = true;
3258                 break;
3259         default:
3260                 return -EOPNOTSUPP;
3261         }
3262
3263         /* configurations requiring offchan cannot work if no channel has been
3264          * specified
3265          */
3266         if (need_offchan && !params->chan)
3267                 return -EINVAL;
3268
3269         mutex_lock(&local->mtx);
3270
3271         /* Check if the operating channel is the requested channel */
3272         if (!need_offchan) {
3273                 struct ieee80211_chanctx_conf *chanctx_conf;
3274
3275                 rcu_read_lock();
3276                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3277
3278                 if (chanctx_conf) {
3279                         need_offchan = params->chan &&
3280                                        (params->chan !=
3281                                         chanctx_conf->def.chan);
3282                 } else if (!params->chan) {
3283                         ret = -EINVAL;
3284                         rcu_read_unlock();
3285                         goto out_unlock;
3286                 } else {
3287                         need_offchan = true;
3288                 }
3289                 rcu_read_unlock();
3290         }
3291
3292         if (need_offchan && !params->offchan) {
3293                 ret = -EBUSY;
3294                 goto out_unlock;
3295         }
3296
3297         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3298         if (!skb) {
3299                 ret = -ENOMEM;
3300                 goto out_unlock;
3301         }
3302         skb_reserve(skb, local->hw.extra_tx_headroom);
3303
3304         memcpy(skb_put(skb, params->len), params->buf, params->len);
3305
3306         IEEE80211_SKB_CB(skb)->flags = flags;
3307
3308         skb->dev = sdata->dev;
3309
3310         if (!need_offchan) {
3311                 *cookie = (unsigned long) skb;
3312                 ieee80211_tx_skb(sdata, skb);
3313                 ret = 0;
3314                 goto out_unlock;
3315         }
3316
3317         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3318                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3319         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3320                 IEEE80211_SKB_CB(skb)->hw_queue =
3321                         local->hw.offchannel_tx_hw_queue;
3322
3323         /* This will handle all kinds of coalescing and immediate TX */
3324         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3325                                        params->wait, cookie, skb,
3326                                        IEEE80211_ROC_TYPE_MGMT_TX);
3327         if (ret)
3328                 kfree_skb(skb);
3329  out_unlock:
3330         mutex_unlock(&local->mtx);
3331         return ret;
3332 }
3333
3334 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3335                                          struct wireless_dev *wdev,
3336                                          u64 cookie)
3337 {
3338         struct ieee80211_local *local = wiphy_priv(wiphy);
3339
3340         return ieee80211_cancel_roc(local, cookie, true);
3341 }
3342
3343 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3344                                           struct wireless_dev *wdev,
3345                                           u16 frame_type, bool reg)
3346 {
3347         struct ieee80211_local *local = wiphy_priv(wiphy);
3348
3349         switch (frame_type) {
3350         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3351                 if (reg)
3352                         local->probe_req_reg++;
3353                 else
3354                         local->probe_req_reg--;
3355
3356                 if (!local->open_count)
3357                         break;
3358
3359                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3360                 break;
3361         default:
3362                 break;
3363         }
3364 }
3365
3366 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3367 {
3368         struct ieee80211_local *local = wiphy_priv(wiphy);
3369
3370         if (local->started)
3371                 return -EOPNOTSUPP;
3372
3373         return drv_set_antenna(local, tx_ant, rx_ant);
3374 }
3375
3376 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3377 {
3378         struct ieee80211_local *local = wiphy_priv(wiphy);
3379
3380         return drv_get_antenna(local, tx_ant, rx_ant);
3381 }
3382
3383 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3384 {
3385         struct ieee80211_local *local = wiphy_priv(wiphy);
3386
3387         return drv_set_ringparam(local, tx, rx);
3388 }
3389
3390 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3391                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3392 {
3393         struct ieee80211_local *local = wiphy_priv(wiphy);
3394
3395         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3396 }
3397
3398 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3399                                     struct net_device *dev,
3400                                     struct cfg80211_gtk_rekey_data *data)
3401 {
3402         struct ieee80211_local *local = wiphy_priv(wiphy);
3403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3404
3405         if (!local->ops->set_rekey_data)
3406                 return -EOPNOTSUPP;
3407
3408         drv_set_rekey_data(local, sdata, data);
3409
3410         return 0;
3411 }
3412
3413 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3414 {
3415         u8 *pos = (void *)skb_put(skb, 7);
3416
3417         *pos++ = WLAN_EID_EXT_CAPABILITY;
3418         *pos++ = 5; /* len */
3419         *pos++ = 0x0;
3420         *pos++ = 0x0;
3421         *pos++ = 0x0;
3422         *pos++ = 0x0;
3423         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3424 }
3425
3426 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3427 {
3428         struct ieee80211_local *local = sdata->local;
3429         u16 capab;
3430
3431         capab = 0;
3432         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3433                 return capab;
3434
3435         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3436                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3437         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3438                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3439
3440         return capab;
3441 }
3442
3443 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3444                                        u8 *peer, u8 *bssid)
3445 {
3446         struct ieee80211_tdls_lnkie *lnkid;
3447
3448         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3449
3450         lnkid->ie_type = WLAN_EID_LINK_ID;
3451         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3452
3453         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3454         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3455         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3456 }
3457
3458 static int
3459 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3460                                u8 *peer, u8 action_code, u8 dialog_token,
3461                                u16 status_code, struct sk_buff *skb)
3462 {
3463         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3464         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3465         struct ieee80211_tdls_data *tf;
3466
3467         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3468
3469         memcpy(tf->da, peer, ETH_ALEN);
3470         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3471         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3472         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3473
3474         switch (action_code) {
3475         case WLAN_TDLS_SETUP_REQUEST:
3476                 tf->category = WLAN_CATEGORY_TDLS;
3477                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3478
3479                 skb_put(skb, sizeof(tf->u.setup_req));
3480                 tf->u.setup_req.dialog_token = dialog_token;
3481                 tf->u.setup_req.capability =
3482                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3483
3484                 ieee80211_add_srates_ie(sdata, skb, false, band);
3485                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3486                 ieee80211_tdls_add_ext_capab(skb);
3487                 break;
3488         case WLAN_TDLS_SETUP_RESPONSE:
3489                 tf->category = WLAN_CATEGORY_TDLS;
3490                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3491
3492                 skb_put(skb, sizeof(tf->u.setup_resp));
3493                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3494                 tf->u.setup_resp.dialog_token = dialog_token;
3495                 tf->u.setup_resp.capability =
3496                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3497
3498                 ieee80211_add_srates_ie(sdata, skb, false, band);
3499                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3500                 ieee80211_tdls_add_ext_capab(skb);
3501                 break;
3502         case WLAN_TDLS_SETUP_CONFIRM:
3503                 tf->category = WLAN_CATEGORY_TDLS;
3504                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3505
3506                 skb_put(skb, sizeof(tf->u.setup_cfm));
3507                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3508                 tf->u.setup_cfm.dialog_token = dialog_token;
3509                 break;
3510         case WLAN_TDLS_TEARDOWN:
3511                 tf->category = WLAN_CATEGORY_TDLS;
3512                 tf->action_code = WLAN_TDLS_TEARDOWN;
3513
3514                 skb_put(skb, sizeof(tf->u.teardown));
3515                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3516                 break;
3517         case WLAN_TDLS_DISCOVERY_REQUEST:
3518                 tf->category = WLAN_CATEGORY_TDLS;
3519                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3520
3521                 skb_put(skb, sizeof(tf->u.discover_req));
3522                 tf->u.discover_req.dialog_token = dialog_token;
3523                 break;
3524         default:
3525                 return -EINVAL;
3526         }
3527
3528         return 0;
3529 }
3530
3531 static int
3532 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3533                            u8 *peer, u8 action_code, u8 dialog_token,
3534                            u16 status_code, struct sk_buff *skb)
3535 {
3536         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3537         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3538         struct ieee80211_mgmt *mgmt;
3539
3540         mgmt = (void *)skb_put(skb, 24);
3541         memset(mgmt, 0, 24);
3542         memcpy(mgmt->da, peer, ETH_ALEN);
3543         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3544         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3545
3546         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3547                                           IEEE80211_STYPE_ACTION);
3548
3549         switch (action_code) {
3550         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3551                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3552                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3553                 mgmt->u.action.u.tdls_discover_resp.action_code =
3554                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3555                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3556                         dialog_token;
3557                 mgmt->u.action.u.tdls_discover_resp.capability =
3558                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3559
3560                 ieee80211_add_srates_ie(sdata, skb, false, band);
3561                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3562                 ieee80211_tdls_add_ext_capab(skb);
3563                 break;
3564         default:
3565                 return -EINVAL;
3566         }
3567
3568         return 0;
3569 }
3570
3571 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3572                                u8 *peer, u8 action_code, u8 dialog_token,
3573                                u16 status_code, const u8 *extra_ies,
3574                                size_t extra_ies_len)
3575 {
3576         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3577         struct ieee80211_local *local = sdata->local;
3578         struct sk_buff *skb = NULL;
3579         bool send_direct;
3580         int ret;
3581
3582         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3583                 return -ENOTSUPP;
3584
3585         /* make sure we are in managed mode, and associated */
3586         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3587             !sdata->u.mgd.associated)
3588                 return -EINVAL;
3589
3590         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3591                  action_code, peer);
3592
3593         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3594                             max(sizeof(struct ieee80211_mgmt),
3595                                 sizeof(struct ieee80211_tdls_data)) +
3596                             50 + /* supported rates */
3597                             7 + /* ext capab */
3598                             extra_ies_len +
3599                             sizeof(struct ieee80211_tdls_lnkie));
3600         if (!skb)
3601                 return -ENOMEM;
3602
3603         skb_reserve(skb, local->hw.extra_tx_headroom);
3604
3605         switch (action_code) {
3606         case WLAN_TDLS_SETUP_REQUEST:
3607         case WLAN_TDLS_SETUP_RESPONSE:
3608         case WLAN_TDLS_SETUP_CONFIRM:
3609         case WLAN_TDLS_TEARDOWN:
3610         case WLAN_TDLS_DISCOVERY_REQUEST:
3611                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3612                                                      action_code, dialog_token,
3613                                                      status_code, skb);
3614                 send_direct = false;
3615                 break;
3616         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3617                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3618                                                  dialog_token, status_code,
3619                                                  skb);
3620                 send_direct = true;
3621                 break;
3622         default:
3623                 ret = -ENOTSUPP;
3624                 break;
3625         }
3626
3627         if (ret < 0)
3628                 goto fail;
3629
3630         if (extra_ies_len)
3631                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3632
3633         /* the TDLS link IE is always added last */
3634         switch (action_code) {
3635         case WLAN_TDLS_SETUP_REQUEST:
3636         case WLAN_TDLS_SETUP_CONFIRM:
3637         case WLAN_TDLS_TEARDOWN:
3638         case WLAN_TDLS_DISCOVERY_REQUEST:
3639                 /* we are the initiator */
3640                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3641                                            sdata->u.mgd.bssid);
3642                 break;
3643         case WLAN_TDLS_SETUP_RESPONSE:
3644         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3645                 /* we are the responder */
3646                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3647                                            sdata->u.mgd.bssid);
3648                 break;
3649         default:
3650                 ret = -ENOTSUPP;
3651                 goto fail;
3652         }
3653
3654         if (send_direct) {
3655                 ieee80211_tx_skb(sdata, skb);
3656                 return 0;
3657         }
3658
3659         /*
3660          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3661          * we should default to AC_VI.
3662          */
3663         switch (action_code) {
3664         case WLAN_TDLS_SETUP_REQUEST:
3665         case WLAN_TDLS_SETUP_RESPONSE:
3666                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3667                 skb->priority = 2;
3668                 break;
3669         default:
3670                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3671                 skb->priority = 5;
3672                 break;
3673         }
3674
3675         /* disable bottom halves when entering the Tx path */
3676         local_bh_disable();
3677         ret = ieee80211_subif_start_xmit(skb, dev);
3678         local_bh_enable();
3679
3680         return ret;
3681
3682 fail:
3683         dev_kfree_skb(skb);
3684         return ret;
3685 }
3686
3687 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3688                                u8 *peer, enum nl80211_tdls_operation oper)
3689 {
3690         struct sta_info *sta;
3691         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3692
3693         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3694                 return -ENOTSUPP;
3695
3696         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3697                 return -EINVAL;
3698
3699         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3700
3701         switch (oper) {
3702         case NL80211_TDLS_ENABLE_LINK:
3703                 rcu_read_lock();
3704                 sta = sta_info_get(sdata, peer);
3705                 if (!sta) {
3706                         rcu_read_unlock();
3707                         return -ENOLINK;
3708                 }
3709
3710                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3711                 rcu_read_unlock();
3712                 break;
3713         case NL80211_TDLS_DISABLE_LINK:
3714                 return sta_info_destroy_addr(sdata, peer);
3715         case NL80211_TDLS_TEARDOWN:
3716         case NL80211_TDLS_SETUP:
3717         case NL80211_TDLS_DISCOVERY_REQ:
3718                 /* We don't support in-driver setup/teardown/discovery */
3719                 return -ENOTSUPP;
3720         default:
3721                 return -ENOTSUPP;
3722         }
3723
3724         return 0;
3725 }
3726
3727 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3728                                   const u8 *peer, u64 *cookie)
3729 {
3730         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3731         struct ieee80211_local *local = sdata->local;
3732         struct ieee80211_qos_hdr *nullfunc;
3733         struct sk_buff *skb;
3734         int size = sizeof(*nullfunc);
3735         __le16 fc;
3736         bool qos;
3737         struct ieee80211_tx_info *info;
3738         struct sta_info *sta;
3739         struct ieee80211_chanctx_conf *chanctx_conf;
3740         enum ieee80211_band band;
3741
3742         rcu_read_lock();
3743         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3744         if (WARN_ON(!chanctx_conf)) {
3745                 rcu_read_unlock();
3746                 return -EINVAL;
3747         }
3748         band = chanctx_conf->def.chan->band;
3749         sta = sta_info_get_bss(sdata, peer);
3750         if (sta) {
3751                 qos = test_sta_flag(sta, WLAN_STA_WME);
3752         } else {
3753                 rcu_read_unlock();
3754                 return -ENOLINK;
3755         }
3756
3757         if (qos) {
3758                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3759                                  IEEE80211_STYPE_QOS_NULLFUNC |
3760                                  IEEE80211_FCTL_FROMDS);
3761         } else {
3762                 size -= 2;
3763                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3764                                  IEEE80211_STYPE_NULLFUNC |
3765                                  IEEE80211_FCTL_FROMDS);
3766         }
3767
3768         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3769         if (!skb) {
3770                 rcu_read_unlock();
3771                 return -ENOMEM;
3772         }
3773
3774         skb->dev = dev;
3775
3776         skb_reserve(skb, local->hw.extra_tx_headroom);
3777
3778         nullfunc = (void *) skb_put(skb, size);
3779         nullfunc->frame_control = fc;
3780         nullfunc->duration_id = 0;
3781         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3782         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3783         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3784         nullfunc->seq_ctrl = 0;
3785
3786         info = IEEE80211_SKB_CB(skb);
3787
3788         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3789                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3790
3791         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3792         skb->priority = 7;
3793         if (qos)
3794                 nullfunc->qos_ctrl = cpu_to_le16(7);
3795
3796         local_bh_disable();
3797         ieee80211_xmit(sdata, skb, band);
3798         local_bh_enable();
3799         rcu_read_unlock();
3800
3801         *cookie = (unsigned long) skb;
3802         return 0;
3803 }
3804
3805 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3806                                      struct wireless_dev *wdev,
3807                                      struct cfg80211_chan_def *chandef)
3808 {
3809         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3810         struct ieee80211_local *local = wiphy_priv(wiphy);
3811         struct ieee80211_chanctx_conf *chanctx_conf;
3812         int ret = -ENODATA;
3813
3814         rcu_read_lock();
3815         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3816         if (chanctx_conf) {
3817                 *chandef = chanctx_conf->def;
3818                 ret = 0;
3819         } else if (local->open_count > 0 &&
3820                    local->open_count == local->monitors &&
3821                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3822                 if (local->use_chanctx)
3823                         *chandef = local->monitor_chandef;
3824                 else
3825                         *chandef = local->_oper_chandef;
3826                 ret = 0;
3827         }
3828         rcu_read_unlock();
3829
3830         return ret;
3831 }
3832
3833 #ifdef CONFIG_PM
3834 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3835 {
3836         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3837 }
3838 #endif
3839
3840 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3841                                  struct net_device *dev,
3842                                  struct cfg80211_qos_map *qos_map)
3843 {
3844         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3845         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3846
3847         if (qos_map) {
3848                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3849                 if (!new_qos_map)
3850                         return -ENOMEM;
3851                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3852         } else {
3853                 /* A NULL qos_map was passed to disable QoS mapping */
3854                 new_qos_map = NULL;
3855         }
3856
3857         old_qos_map = rtnl_dereference(sdata->qos_map);
3858         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3859         if (old_qos_map)
3860                 kfree_rcu(old_qos_map, rcu_head);
3861
3862         return 0;
3863 }
3864
3865 struct cfg80211_ops mac80211_config_ops = {
3866         .add_virtual_intf = ieee80211_add_iface,
3867         .del_virtual_intf = ieee80211_del_iface,
3868         .change_virtual_intf = ieee80211_change_iface,
3869         .start_p2p_device = ieee80211_start_p2p_device,
3870         .stop_p2p_device = ieee80211_stop_p2p_device,
3871         .add_key = ieee80211_add_key,
3872         .del_key = ieee80211_del_key,
3873         .get_key = ieee80211_get_key,
3874         .set_default_key = ieee80211_config_default_key,
3875         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3876         .start_ap = ieee80211_start_ap,
3877         .change_beacon = ieee80211_change_beacon,
3878         .stop_ap = ieee80211_stop_ap,
3879         .add_station = ieee80211_add_station,
3880         .del_station = ieee80211_del_station,
3881         .change_station = ieee80211_change_station,
3882         .get_station = ieee80211_get_station,
3883         .dump_station = ieee80211_dump_station,
3884         .dump_survey = ieee80211_dump_survey,
3885 #ifdef CONFIG_MAC80211_MESH
3886         .add_mpath = ieee80211_add_mpath,
3887         .del_mpath = ieee80211_del_mpath,
3888         .change_mpath = ieee80211_change_mpath,
3889         .get_mpath = ieee80211_get_mpath,
3890         .dump_mpath = ieee80211_dump_mpath,
3891         .update_mesh_config = ieee80211_update_mesh_config,
3892         .get_mesh_config = ieee80211_get_mesh_config,
3893         .join_mesh = ieee80211_join_mesh,
3894         .leave_mesh = ieee80211_leave_mesh,
3895 #endif
3896         .change_bss = ieee80211_change_bss,
3897         .set_txq_params = ieee80211_set_txq_params,
3898         .set_monitor_channel = ieee80211_set_monitor_channel,
3899         .suspend = ieee80211_suspend,
3900         .resume = ieee80211_resume,
3901         .scan = ieee80211_scan,
3902         .sched_scan_start = ieee80211_sched_scan_start,
3903         .sched_scan_stop = ieee80211_sched_scan_stop,
3904         .auth = ieee80211_auth,
3905         .assoc = ieee80211_assoc,
3906         .deauth = ieee80211_deauth,
3907         .disassoc = ieee80211_disassoc,
3908         .join_ibss = ieee80211_join_ibss,
3909         .leave_ibss = ieee80211_leave_ibss,
3910         .set_mcast_rate = ieee80211_set_mcast_rate,
3911         .set_wiphy_params = ieee80211_set_wiphy_params,
3912         .set_tx_power = ieee80211_set_tx_power,
3913         .get_tx_power = ieee80211_get_tx_power,
3914         .set_wds_peer = ieee80211_set_wds_peer,
3915         .rfkill_poll = ieee80211_rfkill_poll,
3916         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3917         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3918         .set_power_mgmt = ieee80211_set_power_mgmt,
3919         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3920         .remain_on_channel = ieee80211_remain_on_channel,
3921         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3922         .mgmt_tx = ieee80211_mgmt_tx,
3923         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3924         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3925         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3926         .set_antenna = ieee80211_set_antenna,
3927         .get_antenna = ieee80211_get_antenna,
3928         .set_ringparam = ieee80211_set_ringparam,
3929         .get_ringparam = ieee80211_get_ringparam,
3930         .set_rekey_data = ieee80211_set_rekey_data,
3931         .tdls_oper = ieee80211_tdls_oper,
3932         .tdls_mgmt = ieee80211_tdls_mgmt,
3933         .probe_client = ieee80211_probe_client,
3934         .set_noack_map = ieee80211_set_noack_map,
3935 #ifdef CONFIG_PM
3936         .set_wakeup = ieee80211_set_wakeup,
3937 #endif
3938         .get_et_sset_count = ieee80211_get_et_sset_count,
3939         .get_et_stats = ieee80211_get_et_stats,
3940         .get_et_strings = ieee80211_get_et_strings,
3941         .get_channel = ieee80211_cfg_get_channel,
3942         .start_radar_detection = ieee80211_start_radar_detection,
3943         .channel_switch = ieee80211_channel_switch,
3944         .set_qos_map = ieee80211_set_qos_map,
3945 };