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         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 113         int ret;
 114
 115         mutex_lock(&sdata->local->chanctx_mtx);
 116         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 117         mutex_unlock(&sdata->local->chanctx_mtx);
 118         if (ret < 0)
 119                 return ret;
 120
 121         return ieee80211_do_open(wdev, true);
 122 }
 123
 124 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 125                                       struct wireless_dev *wdev)
 126 {
 127         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 128 }
 129
 130 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 131                                   struct net_device *dev,
 132                                   u16 noack_map)
 133 {
 134         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 135
 136         sdata->noack_map = noack_map;
 137         return 0;
 138 }
 139
 140 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 141                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 142                              struct key_params *params)
 143 {
 144         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 145         struct ieee80211_local *local = sdata->local;
 146         struct sta_info *sta = NULL;
 147         const struct ieee80211_cipher_scheme *cs = NULL;
 148         struct ieee80211_key *key;
 149         int err;
 150
 151         if (!ieee80211_sdata_running(sdata))
 152                 return -ENETDOWN;
 153
 154         /* reject WEP and TKIP keys if WEP failed to initialize */
 155         switch (params->cipher) {
 156         case WLAN_CIPHER_SUITE_WEP40:
 157         case WLAN_CIPHER_SUITE_TKIP:
 158         case WLAN_CIPHER_SUITE_WEP104:
 159                 if (IS_ERR(local->wep_tx_tfm))
 160                         return -EINVAL;
 161                 break;
 162         case WLAN_CIPHER_SUITE_CCMP:
 163         case WLAN_CIPHER_SUITE_AES_CMAC:
 164         case WLAN_CIPHER_SUITE_GCMP:
 165                 break;
 166         default:
 167                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 168                 break;
 169         }
 170
 171         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 172                                   params->key, params->seq_len, params->seq,
 173                                   cs);
 174         if (IS_ERR(key))
 175                 return PTR_ERR(key);
 176
 177         if (pairwise)
 178                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 179
 180         mutex_lock(&local->sta_mtx);
 181
 182         if (mac_addr) {
 183                 if (ieee80211_vif_is_mesh(&sdata->vif))
 184                         sta = sta_info_get(sdata, mac_addr);
 185                 else
 186                         sta = sta_info_get_bss(sdata, mac_addr);
 187                 /*
 188                  * The ASSOC test makes sure the driver is ready to
 189                  * receive the key. When wpa_supplicant has roamed
 190                  * using FT, it attempts to set the key before
 191                  * association has completed, this rejects that attempt
 192                  * so it will set the key again after assocation.
 193                  *
 194                  * TODO: accept the key if we have a station entry and
 195                  *       add it to the device after the station.
 196                  */
 197                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 198                         ieee80211_key_free_unused(key);
 199                         err = -ENOENT;
 200                         goto out_unlock;
 201                 }
 202         }
 203
 204         switch (sdata->vif.type) {
 205         case NL80211_IFTYPE_STATION:
 206                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 207                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 208                 break;
 209         case NL80211_IFTYPE_AP:
 210         case NL80211_IFTYPE_AP_VLAN:
 211                 /* Keys without a station are used for TX only */
 212                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 213                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 214                 break;
 215         case NL80211_IFTYPE_ADHOC:
 216                 /* no MFP (yet) */
 217                 break;
 218         case NL80211_IFTYPE_MESH_POINT:
 219 #ifdef CONFIG_MAC80211_MESH
 220                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 221                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 222                 break;
 223 #endif
 224         case NL80211_IFTYPE_WDS:
 225         case NL80211_IFTYPE_MONITOR:
 226         case NL80211_IFTYPE_P2P_DEVICE:
 227         case NL80211_IFTYPE_UNSPECIFIED:
 228         case NUM_NL80211_IFTYPES:
 229         case NL80211_IFTYPE_P2P_CLIENT:
 230         case NL80211_IFTYPE_P2P_GO:
 231                 /* shouldn't happen */
 232                 WARN_ON_ONCE(1);
 233                 break;
 234         }
 235
 236         if (sta)
 237                 sta->cipher_scheme = cs;
 238
 239         err = ieee80211_key_link(key, sdata, sta);
 240
 241  out_unlock:
 242         mutex_unlock(&local->sta_mtx);
 243
 244         return err;
 245 }
 246
 247 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 248                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 249 {
 250         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 251         struct ieee80211_local *local = sdata->local;
 252         struct sta_info *sta;
 253         struct ieee80211_key *key = NULL;
 254         int ret;
 255
 256         mutex_lock(&local->sta_mtx);
 257         mutex_lock(&local->key_mtx);
 258
 259         if (mac_addr) {
 260                 ret = -ENOENT;
 261
 262                 sta = sta_info_get_bss(sdata, mac_addr);
 263                 if (!sta)
 264                         goto out_unlock;
 265
 266                 if (pairwise)
 267                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 268                 else
 269                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 270         } else
 271                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 272
 273         if (!key) {
 274                 ret = -ENOENT;
 275                 goto out_unlock;
 276         }
 277
 278         ieee80211_key_free(key, true);
 279
 280         ret = 0;
 281  out_unlock:
 282         mutex_unlock(&local->key_mtx);
 283         mutex_unlock(&local->sta_mtx);
 284
 285         return ret;
 286 }
 287
 288 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 289                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 290                              void *cookie,
 291                              void (*callback)(void *cookie,
 292                                               struct key_params *params))
 293 {
 294         struct ieee80211_sub_if_data *sdata;
 295         struct sta_info *sta = NULL;
 296         u8 seq[6] = {0};
 297         struct key_params params;
 298         struct ieee80211_key *key = NULL;
 299         u64 pn64;
 300         u32 iv32;
 301         u16 iv16;
 302         int err = -ENOENT;
 303
 304         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 305
 306         rcu_read_lock();
 307
 308         if (mac_addr) {
 309                 sta = sta_info_get_bss(sdata, mac_addr);
 310                 if (!sta)
 311                         goto out;
 312
 313                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 314                         key = rcu_dereference(sta->ptk[key_idx]);
 315                 else if (!pairwise &&
 316                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 317                         key = rcu_dereference(sta->gtk[key_idx]);
 318         } else
 319                 key = rcu_dereference(sdata->keys[key_idx]);
 320
 321         if (!key)
 322                 goto out;
 323
 324         memset(&params, 0, sizeof(params));
 325
 326         params.cipher = key->conf.cipher;
 327
 328         switch (key->conf.cipher) {
 329         case WLAN_CIPHER_SUITE_TKIP:
 330                 iv32 = key->u.tkip.tx.iv32;
 331                 iv16 = key->u.tkip.tx.iv16;
 332
 333                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 334                         drv_get_tkip_seq(sdata->local,
 335                                          key->conf.hw_key_idx,
 336                                          &iv32, &iv16);
 337
 338                 seq[0] = iv16 & 0xff;
 339                 seq[1] = (iv16 >> 8) & 0xff;
 340                 seq[2] = iv32 & 0xff;
 341                 seq[3] = (iv32 >> 8) & 0xff;
 342                 seq[4] = (iv32 >> 16) & 0xff;
 343                 seq[5] = (iv32 >> 24) & 0xff;
 344                 params.seq = seq;
 345                 params.seq_len = 6;
 346                 break;
 347         case WLAN_CIPHER_SUITE_CCMP:
 348                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 349                 seq[0] = pn64;
 350                 seq[1] = pn64 >> 8;
 351                 seq[2] = pn64 >> 16;
 352                 seq[3] = pn64 >> 24;
 353                 seq[4] = pn64 >> 32;
 354                 seq[5] = pn64 >> 40;
 355                 params.seq = seq;
 356                 params.seq_len = 6;
 357                 break;
 358         case WLAN_CIPHER_SUITE_AES_CMAC:
 359                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 360                 seq[0] = pn64;
 361                 seq[1] = pn64 >> 8;
 362                 seq[2] = pn64 >> 16;
 363                 seq[3] = pn64 >> 24;
 364                 seq[4] = pn64 >> 32;
 365                 seq[5] = pn64 >> 40;
 366                 params.seq = seq;
 367                 params.seq_len = 6;
 368                 break;
 369         }
 370
 371         params.key = key->conf.key;
 372         params.key_len = key->conf.keylen;
 373
 374         callback(cookie, &params);
 375         err = 0;
 376
 377  out:
 378         rcu_read_unlock();
 379         return err;
 380 }
 381
 382 static int ieee80211_config_default_key(struct wiphy *wiphy,
 383                                         struct net_device *dev,
 384                                         u8 key_idx, bool uni,
 385                                         bool multi)
 386 {
 387         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 388
 389         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 390
 391         return 0;
 392 }
 393
 394 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 395                                              struct net_device *dev,
 396                                              u8 key_idx)
 397 {
 398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 399
 400         ieee80211_set_default_mgmt_key(sdata, key_idx);
 401
 402         return 0;
 403 }
 404
 405 void sta_set_rate_info_tx(struct sta_info *sta,
 406                           const struct ieee80211_tx_rate *rate,
 407                           struct rate_info *rinfo)
 408 {
 409         rinfo->flags = 0;
 410         if (rate->flags & IEEE80211_TX_RC_MCS) {
 411                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 412                 rinfo->mcs = rate->idx;
 413         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 414                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 415                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 416                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 417         } else {
 418                 struct ieee80211_supported_band *sband;
 419                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 420                 u16 brate;
 421
 422                 sband = sta->local->hw.wiphy->bands[
 423                                 ieee80211_get_sdata_band(sta->sdata)];
 424                 brate = sband->bitrates[rate->idx].bitrate;
 425                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 426         }
 427         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 428                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 429         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 430                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 431         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 432                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 433         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 434                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 435 }
 436
 437 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 438 {
 439         rinfo->flags = 0;
 440
 441         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 442                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 443                 rinfo->mcs = sta->last_rx_rate_idx;
 444         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 445                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 446                 rinfo->nss = sta->last_rx_rate_vht_nss;
 447                 rinfo->mcs = sta->last_rx_rate_idx;
 448         } else {
 449                 struct ieee80211_supported_band *sband;
 450                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 451                 u16 brate;
 452
 453                 sband = sta->local->hw.wiphy->bands[
 454                                 ieee80211_get_sdata_band(sta->sdata)];
 455                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 456                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 457         }
 458
 459         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 460                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 461         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 462                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 463         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 464                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 465         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 466                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 467         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 468                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 469 }
 470
 471 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 472 {
 473         struct ieee80211_sub_if_data *sdata = sta->sdata;
 474         struct ieee80211_local *local = sdata->local;
 475         struct rate_control_ref *ref = local->rate_ctrl;
 476         struct timespec uptime;
 477         u64 packets = 0;
 478         u32 thr = 0;
 479         int i, ac;
 480
 481         sinfo->generation = sdata->local->sta_generation;
 482
 483         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 484                         STATION_INFO_RX_BYTES64 |
 485                         STATION_INFO_TX_BYTES64 |
 486                         STATION_INFO_RX_PACKETS |
 487                         STATION_INFO_TX_PACKETS |
 488                         STATION_INFO_TX_RETRIES |
 489                         STATION_INFO_TX_FAILED |
 490                         STATION_INFO_TX_BITRATE |
 491                         STATION_INFO_RX_BITRATE |
 492                         STATION_INFO_RX_DROP_MISC |
 493                         STATION_INFO_BSS_PARAM |
 494                         STATION_INFO_CONNECTED_TIME |
 495                         STATION_INFO_STA_FLAGS |
 496                         STATION_INFO_BEACON_LOSS_COUNT;
 497
 498         do_posix_clock_monotonic_gettime(&uptime);
 499         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 500
 501         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 502         sinfo->tx_bytes = 0;
 503         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 504                 sinfo->tx_bytes += sta->tx_bytes[ac];
 505                 packets += sta->tx_packets[ac];
 506         }
 507         sinfo->tx_packets = packets;
 508         sinfo->rx_bytes = sta->rx_bytes;
 509         sinfo->rx_packets = sta->rx_packets;
 510         sinfo->tx_retries = sta->tx_retry_count;
 511         sinfo->tx_failed = sta->tx_retry_failed;
 512         sinfo->rx_dropped_misc = sta->rx_dropped;
 513         sinfo->beacon_loss_count = sta->beacon_loss_count;
 514
 515         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 516             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 517                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 518                 if (!local->ops->get_rssi ||
 519                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 520                         sinfo->signal = (s8)sta->last_signal;
 521                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 522         }
 523         if (sta->chains) {
 524                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 525                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 526
 527                 sinfo->chains = sta->chains;
 528                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 529                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 530                         sinfo->chain_signal_avg[i] =
 531                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 532                 }
 533         }
 534
 535         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 536         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 537
 538         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 539 #ifdef CONFIG_MAC80211_MESH
 540                 sinfo->filled |= STATION_INFO_LLID |
 541                                  STATION_INFO_PLID |
 542                                  STATION_INFO_PLINK_STATE |
 543                                  STATION_INFO_LOCAL_PM |
 544                                  STATION_INFO_PEER_PM |
 545                                  STATION_INFO_NONPEER_PM;
 546
 547                 sinfo->llid = sta->llid;
 548                 sinfo->plid = sta->plid;
 549                 sinfo->plink_state = sta->plink_state;
 550                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 551                         sinfo->filled |= STATION_INFO_T_OFFSET;
 552                         sinfo->t_offset = sta->t_offset;
 553                 }
 554                 sinfo->local_pm = sta->local_pm;
 555                 sinfo->peer_pm = sta->peer_pm;
 556                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 557 #endif
 558         }
 559
 560         sinfo->bss_param.flags = 0;
 561         if (sdata->vif.bss_conf.use_cts_prot)
 562                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 563         if (sdata->vif.bss_conf.use_short_preamble)
 564                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 565         if (sdata->vif.bss_conf.use_short_slot)
 566                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 567         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 568         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 569
 570         sinfo->sta_flags.set = 0;
 571         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 572                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 573                                 BIT(NL80211_STA_FLAG_WME) |
 574                                 BIT(NL80211_STA_FLAG_MFP) |
 575                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 576                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 577                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 578         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 579                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 580         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 581                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 582         if (test_sta_flag(sta, WLAN_STA_WME))
 583                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 584         if (test_sta_flag(sta, WLAN_STA_MFP))
 585                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 586         if (test_sta_flag(sta, WLAN_STA_AUTH))
 587                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 588         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 589                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 590         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 591                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 592
 593         /* check if the driver has a SW RC implementation */
 594         if (ref && ref->ops->get_expected_throughput)
 595                 thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
 596         else
 597                 thr = drv_get_expected_throughput(local, &sta->sta);
 598
 599         if (thr != 0) {
 600                 sinfo->filled |= STATION_INFO_EXPECTED_THROUGHPUT;
 601                 sinfo->expected_throughput = thr;
 602         }
 603 }
 604
 605 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 606         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 607         "rx_duplicates", "rx_fragments", "rx_dropped",
 608         "tx_packets", "tx_bytes", "tx_fragments",
 609         "tx_filtered", "tx_retry_failed", "tx_retries",
 610         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 611         "channel", "noise", "ch_time", "ch_time_busy",
 612         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 613 };
 614 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 615
 616 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 617                                        struct net_device *dev,
 618                                        int sset)
 619 {
 620         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 621         int rv = 0;
 622
 623         if (sset == ETH_SS_STATS)
 624                 rv += STA_STATS_LEN;
 625
 626         rv += drv_get_et_sset_count(sdata, sset);
 627
 628         if (rv == 0)
 629                 return -EOPNOTSUPP;
 630         return rv;
 631 }
 632
 633 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 634                                    struct net_device *dev,
 635                                    struct ethtool_stats *stats,
 636                                    u64 *data)
 637 {
 638         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 639         struct ieee80211_chanctx_conf *chanctx_conf;
 640         struct ieee80211_channel *channel;
 641         struct sta_info *sta;
 642         struct ieee80211_local *local = sdata->local;
 643         struct station_info sinfo;
 644         struct survey_info survey;
 645         int i, q;
 646 #define STA_STATS_SURVEY_LEN 7
 647
 648         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 649
 650 #define ADD_STA_STATS(sta)                              \
 651         do {                                            \
 652                 data[i++] += sta->rx_packets;           \
 653                 data[i++] += sta->rx_bytes;             \
 654                 data[i++] += sta->wep_weak_iv_count;    \
 655                 data[i++] += sta->num_duplicates;       \
 656                 data[i++] += sta->rx_fragments;         \
 657                 data[i++] += sta->rx_dropped;           \
 658                                                         \
 659                 data[i++] += sinfo.tx_packets;          \
 660                 data[i++] += sinfo.tx_bytes;            \
 661                 data[i++] += sta->tx_fragments;         \
 662                 data[i++] += sta->tx_filtered_count;    \
 663                 data[i++] += sta->tx_retry_failed;      \
 664                 data[i++] += sta->tx_retry_count;       \
 665                 data[i++] += sta->beacon_loss_count;    \
 666         } while (0)
 667
 668         /* For Managed stations, find the single station based on BSSID
 669          * and use that.  For interface types, iterate through all available
 670          * stations and add stats for any station that is assigned to this
 671          * network device.
 672          */
 673
 674         mutex_lock(&local->sta_mtx);
 675
 676         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 677                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 678
 679                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 680                         goto do_survey;
 681
 682                 sinfo.filled = 0;
 683                 sta_set_sinfo(sta, &sinfo);
 684
 685                 i = 0;
 686                 ADD_STA_STATS(sta);
 687
 688                 data[i++] = sta->sta_state;
 689
 690
 691                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 692                         data[i] = 100000 *
 693                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 694                 i++;
 695                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 696                         data[i] = 100000 *
 697                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 698                 i++;
 699
 700                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 701                         data[i] = (u8)sinfo.signal_avg;
 702                 i++;
 703         } else {
 704                 list_for_each_entry(sta, &local->sta_list, list) {
 705                         /* Make sure this station belongs to the proper dev */
 706                         if (sta->sdata->dev != dev)
 707                                 continue;
 708
 709                         sinfo.filled = 0;
 710                         sta_set_sinfo(sta, &sinfo);
 711                         i = 0;
 712                         ADD_STA_STATS(sta);
 713                 }
 714         }
 715
 716 do_survey:
 717         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 718         /* Get survey stats for current channel */
 719         survey.filled = 0;
 720
 721         rcu_read_lock();
 722         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 723         if (chanctx_conf)
 724                 channel = chanctx_conf->def.chan;
 725         else
 726                 channel = NULL;
 727         rcu_read_unlock();
 728
 729         if (channel) {
 730                 q = 0;
 731                 do {
 732                         survey.filled = 0;
 733                         if (drv_get_survey(local, q, &survey) != 0) {
 734                                 survey.filled = 0;
 735                                 break;
 736                         }
 737                         q++;
 738                 } while (channel != survey.channel);
 739         }
 740
 741         if (survey.filled)
 742                 data[i++] = survey.channel->center_freq;
 743         else
 744                 data[i++] = 0;
 745         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 746                 data[i++] = (u8)survey.noise;
 747         else
 748                 data[i++] = -1LL;
 749         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 750                 data[i++] = survey.channel_time;
 751         else
 752                 data[i++] = -1LL;
 753         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 754                 data[i++] = survey.channel_time_busy;
 755         else
 756                 data[i++] = -1LL;
 757         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 758                 data[i++] = survey.channel_time_ext_busy;
 759         else
 760                 data[i++] = -1LL;
 761         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 762                 data[i++] = survey.channel_time_rx;
 763         else
 764                 data[i++] = -1LL;
 765         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 766                 data[i++] = survey.channel_time_tx;
 767         else
 768                 data[i++] = -1LL;
 769
 770         mutex_unlock(&local->sta_mtx);
 771
 772         if (WARN_ON(i != STA_STATS_LEN))
 773                 return;
 774
 775         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 776 }
 777
 778 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 779                                      struct net_device *dev,
 780                                      u32 sset, u8 *data)
 781 {
 782         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 783         int sz_sta_stats = 0;
 784
 785         if (sset == ETH_SS_STATS) {
 786                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 787                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 788         }
 789         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 790 }
 791
 792 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 793                                   int idx, u8 *mac, struct station_info *sinfo)
 794 {
 795         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 796         struct ieee80211_local *local = sdata->local;
 797         struct sta_info *sta;
 798         int ret = -ENOENT;
 799
 800         mutex_lock(&local->sta_mtx);
 801
 802         sta = sta_info_get_by_idx(sdata, idx);
 803         if (sta) {
 804                 ret = 0;
 805                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 806                 sta_set_sinfo(sta, sinfo);
 807         }
 808
 809         mutex_unlock(&local->sta_mtx);
 810
 811         return ret;
 812 }
 813
 814 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 815                                  int idx, struct survey_info *survey)
 816 {
 817         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 818
 819         return drv_get_survey(local, idx, survey);
 820 }
 821
 822 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 823                                  const u8 *mac, struct station_info *sinfo)
 824 {
 825         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 826         struct ieee80211_local *local = sdata->local;
 827         struct sta_info *sta;
 828         int ret = -ENOENT;
 829
 830         mutex_lock(&local->sta_mtx);
 831
 832         sta = sta_info_get_bss(sdata, mac);
 833         if (sta) {
 834                 ret = 0;
 835                 sta_set_sinfo(sta, sinfo);
 836         }
 837
 838         mutex_unlock(&local->sta_mtx);
 839
 840         return ret;
 841 }
 842
 843 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 844                                          struct cfg80211_chan_def *chandef)
 845 {
 846         struct ieee80211_local *local = wiphy_priv(wiphy);
 847         struct ieee80211_sub_if_data *sdata;
 848         int ret = 0;
 849
 850         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 851                 return 0;
 852
 853         mutex_lock(&local->mtx);
 854         mutex_lock(&local->iflist_mtx);
 855         if (local->use_chanctx) {
 856                 sdata = rcu_dereference_protected(
 857                                 local->monitor_sdata,
 858                                 lockdep_is_held(&local->iflist_mtx));
 859                 if (sdata) {
 860                         ieee80211_vif_release_channel(sdata);
 861                         ret = ieee80211_vif_use_channel(sdata, chandef,
 862                                         IEEE80211_CHANCTX_EXCLUSIVE);
 863                 }
 864         } else if (local->open_count == local->monitors) {
 865                 local->_oper_chandef = *chandef;
 866                 ieee80211_hw_config(local, 0);
 867         }
 868
 869         if (ret == 0)
 870                 local->monitor_chandef = *chandef;
 871         mutex_unlock(&local->iflist_mtx);
 872         mutex_unlock(&local->mtx);
 873
 874         return ret;
 875 }
 876
 877 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 878                                     const u8 *resp, size_t resp_len)
 879 {
 880         struct probe_resp *new, *old;
 881
 882         if (!resp || !resp_len)
 883                 return 1;
 884
 885         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 886
 887         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 888         if (!new)
 889                 return -ENOMEM;
 890
 891         new->len = resp_len;
 892         memcpy(new->data, resp, resp_len);
 893
 894         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 895         if (old)
 896                 kfree_rcu(old, rcu_head);
 897
 898         return 0;
 899 }
 900
 901 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 902                                    struct cfg80211_beacon_data *params)
 903 {
 904         struct beacon_data *new, *old;
 905         int new_head_len, new_tail_len;
 906         int size, err;
 907         u32 changed = BSS_CHANGED_BEACON;
 908
 909         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 910
 911
 912         /* Need to have a beacon head if we don't have one yet */
 913         if (!params->head && !old)
 914                 return -EINVAL;
 915
 916         /* new or old head? */
 917         if (params->head)
 918                 new_head_len = params->head_len;
 919         else
 920                 new_head_len = old->head_len;
 921
 922         /* new or old tail? */
 923         if (params->tail || !old)
 924                 /* params->tail_len will be zero for !params->tail */
 925                 new_tail_len = params->tail_len;
 926         else
 927                 new_tail_len = old->tail_len;
 928
 929         size = sizeof(*new) + new_head_len + new_tail_len;
 930
 931         new = kzalloc(size, GFP_KERNEL);
 932         if (!new)
 933                 return -ENOMEM;
 934
 935         /* start filling the new info now */
 936
 937         /*
 938          * pointers go into the block we allocated,
 939          * memory is | beacon_data | head | tail |
 940          */
 941         new->head = ((u8 *) new) + sizeof(*new);
 942         new->tail = new->head + new_head_len;
 943         new->head_len = new_head_len;
 944         new->tail_len = new_tail_len;
 945
 946         /* copy in head */
 947         if (params->head)
 948                 memcpy(new->head, params->head, new_head_len);
 949         else
 950                 memcpy(new->head, old->head, new_head_len);
 951
 952         /* copy in optional tail */
 953         if (params->tail)
 954                 memcpy(new->tail, params->tail, new_tail_len);
 955         else
 956                 if (old)
 957                         memcpy(new->tail, old->tail, new_tail_len);
 958
 959         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 960                                        params->probe_resp_len);
 961         if (err < 0)
 962                 return err;
 963         if (err == 0)
 964                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 965
 966         rcu_assign_pointer(sdata->u.ap.beacon, new);
 967
 968         if (old)
 969                 kfree_rcu(old, rcu_head);
 970
 971         return changed;
 972 }
 973
 974 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 975                               struct cfg80211_ap_settings *params)
 976 {
 977         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 978         struct ieee80211_local *local = sdata->local;
 979         struct beacon_data *old;
 980         struct ieee80211_sub_if_data *vlan;
 981         u32 changed = BSS_CHANGED_BEACON_INT |
 982                       BSS_CHANGED_BEACON_ENABLED |
 983                       BSS_CHANGED_BEACON |
 984                       BSS_CHANGED_SSID |
 985                       BSS_CHANGED_P2P_PS;
 986         int err;
 987
 988         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 989         if (old)
 990                 return -EALREADY;
 991
 992         /* TODO: make hostapd tell us what it wants */
 993         sdata->smps_mode = IEEE80211_SMPS_OFF;
 994         sdata->needed_rx_chains = sdata->local->rx_chains;
 995
 996         mutex_lock(&local->mtx);
 997         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 998                                         IEEE80211_CHANCTX_SHARED);
 999         if (!err)
1000                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
1001         mutex_unlock(&local->mtx);
1002         if (err)
1003                 return err;
1004
1005         /*
1006          * Apply control port protocol, this allows us to
1007          * not encrypt dynamic WEP control frames.
1008          */
1009         sdata->control_port_protocol = params->crypto.control_port_ethertype;
1010         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1011         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
1012                                                         &params->crypto,
1013                                                         sdata->vif.type);
1014
1015         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1016                 vlan->control_port_protocol =
1017                         params->crypto.control_port_ethertype;
1018                 vlan->control_port_no_encrypt =
1019                         params->crypto.control_port_no_encrypt;
1020                 vlan->encrypt_headroom =
1021                         ieee80211_cs_headroom(sdata->local,
1022                                               &params->crypto,
1023                                               vlan->vif.type);
1024         }
1025
1026         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1027         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1028         sdata->vif.bss_conf.enable_beacon = true;
1029
1030         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1031         if (params->ssid_len)
1032                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1033                        params->ssid_len);
1034         sdata->vif.bss_conf.hidden_ssid =
1035                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1036
1037         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1038                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1039         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1040                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1041         if (params->p2p_opp_ps)
1042                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1043                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1044
1045         err = ieee80211_assign_beacon(sdata, &params->beacon);
1046         if (err < 0) {
1047                 ieee80211_vif_release_channel(sdata);
1048                 return err;
1049         }
1050         changed |= err;
1051
1052         err = drv_start_ap(sdata->local, sdata);
1053         if (err) {
1054                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1055
1056                 if (old)
1057                         kfree_rcu(old, rcu_head);
1058                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1059                 ieee80211_vif_release_channel(sdata);
1060                 return err;
1061         }
1062
1063         ieee80211_recalc_dtim(local, sdata);
1064         ieee80211_bss_info_change_notify(sdata, changed);
1065
1066         netif_carrier_on(dev);
1067         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1068                 netif_carrier_on(vlan->dev);
1069
1070         return 0;
1071 }
1072
1073 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1074                                    struct cfg80211_beacon_data *params)
1075 {
1076         struct ieee80211_sub_if_data *sdata;
1077         struct beacon_data *old;
1078         int err;
1079
1080         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1081         sdata_assert_lock(sdata);
1082
1083         /* don't allow changing the beacon while CSA is in place - offset
1084          * of channel switch counter may change
1085          */
1086         if (sdata->vif.csa_active)
1087                 return -EBUSY;
1088
1089         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1090         if (!old)
1091                 return -ENOENT;
1092
1093         err = ieee80211_assign_beacon(sdata, params);
1094         if (err < 0)
1095                 return err;
1096         ieee80211_bss_info_change_notify(sdata, err);
1097         return 0;
1098 }
1099
1100 bool ieee80211_csa_needs_block_tx(struct ieee80211_local *local)
1101 {
1102         struct ieee80211_sub_if_data *sdata;
1103
1104         lockdep_assert_held(&local->mtx);
1105
1106         rcu_read_lock();
1107         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
1108                 if (!ieee80211_sdata_running(sdata))
1109                         continue;
1110
1111                 if (!sdata->vif.csa_active)
1112                         continue;
1113
1114                 if (!sdata->csa_block_tx)
1115                         continue;
1116
1117                 rcu_read_unlock();
1118                 return true;
1119         }
1120         rcu_read_unlock();
1121
1122         return false;
1123 }
1124
1125 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1126 {
1127         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1128         struct ieee80211_sub_if_data *vlan;
1129         struct ieee80211_local *local = sdata->local;
1130         struct beacon_data *old_beacon;
1131         struct probe_resp *old_probe_resp;
1132         struct cfg80211_chan_def chandef;
1133
1134         sdata_assert_lock(sdata);
1135
1136         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1137         if (!old_beacon)
1138                 return -ENOENT;
1139         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1140
1141         /* abort any running channel switch */
1142         mutex_lock(&local->mtx);
1143         sdata->vif.csa_active = false;
1144         if (!ieee80211_csa_needs_block_tx(local))
1145                 ieee80211_wake_queues_by_reason(&local->hw,
1146                                         IEEE80211_MAX_QUEUE_MAP,
1147                                         IEEE80211_QUEUE_STOP_REASON_CSA);
1148         mutex_unlock(&local->mtx);
1149
1150         kfree(sdata->u.ap.next_beacon);
1151         sdata->u.ap.next_beacon = NULL;
1152
1153         /* turn off carrier for this interface and dependent VLANs */
1154         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1155                 netif_carrier_off(vlan->dev);
1156         netif_carrier_off(dev);
1157
1158         /* remove beacon and probe response */
1159         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1160         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1161         kfree_rcu(old_beacon, rcu_head);
1162         if (old_probe_resp)
1163                 kfree_rcu(old_probe_resp, rcu_head);
1164         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1165
1166         __sta_info_flush(sdata, true);
1167         ieee80211_free_keys(sdata, true);
1168
1169         sdata->vif.bss_conf.enable_beacon = false;
1170         sdata->vif.bss_conf.ssid_len = 0;
1171         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1172         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1173
1174         if (sdata->wdev.cac_started) {
1175                 chandef = sdata->vif.bss_conf.chandef;
1176                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1177                 cfg80211_cac_event(sdata->dev, &chandef,
1178                                    NL80211_RADAR_CAC_ABORTED,
1179                                    GFP_KERNEL);
1180         }
1181
1182         drv_stop_ap(sdata->local, sdata);
1183
1184         /* free all potentially still buffered bcast frames */
1185         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1186         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1187
1188         mutex_lock(&local->mtx);
1189         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1190         ieee80211_vif_release_channel(sdata);
1191         mutex_unlock(&local->mtx);
1192
1193         return 0;
1194 }
1195
1196 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1197 struct iapp_layer2_update {
1198         u8 da[ETH_ALEN];        /* broadcast */
1199         u8 sa[ETH_ALEN];        /* STA addr */
1200         __be16 len;             /* 6 */
1201         u8 dsap;                /* 0 */
1202         u8 ssap;                /* 0 */
1203         u8 control;
1204         u8 xid_info[3];
1205 } __packed;
1206
1207 static void ieee80211_send_layer2_update(struct sta_info *sta)
1208 {
1209         struct iapp_layer2_update *msg;
1210         struct sk_buff *skb;
1211
1212         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1213          * bridge devices */
1214
1215         skb = dev_alloc_skb(sizeof(*msg));
1216         if (!skb)
1217                 return;
1218         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1219
1220         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1221          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1222
1223         eth_broadcast_addr(msg->da);
1224         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1225         msg->len = htons(6);
1226         msg->dsap = 0;
1227         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1228         msg->control = 0xaf;    /* XID response lsb.1111F101.
1229                                  * F=0 (no poll command; unsolicited frame) */
1230         msg->xid_info[0] = 0x81;        /* XID format identifier */
1231         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1232         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1233
1234         skb->dev = sta->sdata->dev;
1235         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1236         memset(skb->cb, 0, sizeof(skb->cb));
1237         netif_rx_ni(skb);
1238 }
1239
1240 static int sta_apply_auth_flags(struct ieee80211_local *local,
1241                                 struct sta_info *sta,
1242                                 u32 mask, u32 set)
1243 {
1244         int ret;
1245
1246         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1247             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1248             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1249                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1250                 if (ret)
1251                         return ret;
1252         }
1253
1254         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1255             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1256             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1257                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1258                 if (ret)
1259                         return ret;
1260         }
1261
1262         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1263                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1264                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1265                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1266                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1267                 else
1268                         ret = 0;
1269                 if (ret)
1270                         return ret;
1271         }
1272
1273         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1274             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1275             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1276                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1277                 if (ret)
1278                         return ret;
1279         }
1280
1281         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1282             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1283             test_sta_flag(sta, WLAN_STA_AUTH)) {
1284                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1285                 if (ret)
1286                         return ret;
1287         }
1288
1289         return 0;
1290 }
1291
1292 static int sta_apply_parameters(struct ieee80211_local *local,
1293                                 struct sta_info *sta,
1294                                 struct station_parameters *params)
1295 {
1296         int ret = 0;
1297         struct ieee80211_supported_band *sband;
1298         struct ieee80211_sub_if_data *sdata = sta->sdata;
1299         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1300         u32 mask, set;
1301
1302         sband = local->hw.wiphy->bands[band];
1303
1304         mask = params->sta_flags_mask;
1305         set = params->sta_flags_set;
1306
1307         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1308                 /*
1309                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1310                  * API but must follow AUTHENTICATED for driver state.
1311                  */
1312                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1313                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1314                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1315                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1316         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1317                 /*
1318                  * TDLS -- everything follows authorized, but
1319                  * only becoming authorized is possible, not
1320                  * going back
1321                  */
1322                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1323                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1324                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1325                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1326                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1327                 }
1328         }
1329
1330         ret = sta_apply_auth_flags(local, sta, mask, set);
1331         if (ret)
1332                 return ret;
1333
1334         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1335                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1336                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1337                 else
1338                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1339         }
1340
1341         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1342                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1343                         set_sta_flag(sta, WLAN_STA_WME);
1344                         sta->sta.wme = true;
1345                 } else {
1346                         clear_sta_flag(sta, WLAN_STA_WME);
1347                         sta->sta.wme = false;
1348                 }
1349         }
1350
1351         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1352                 if (set & BIT(NL80211_STA_FLAG_MFP))
1353                         set_sta_flag(sta, WLAN_STA_MFP);
1354                 else
1355                         clear_sta_flag(sta, WLAN_STA_MFP);
1356         }
1357
1358         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1359                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1360                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1361                 else
1362                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1363         }
1364
1365         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1366                 sta->sta.uapsd_queues = params->uapsd_queues;
1367                 sta->sta.max_sp = params->max_sp;
1368         }
1369
1370         /*
1371          * cfg80211 validates this (1-2007) and allows setting the AID
1372          * only when creating a new station entry
1373          */
1374         if (params->aid)
1375                 sta->sta.aid = params->aid;
1376
1377         /*
1378          * Some of the following updates would be racy if called on an
1379          * existing station, via ieee80211_change_station(). However,
1380          * all such changes are rejected by cfg80211 except for updates
1381          * changing the supported rates on an existing but not yet used
1382          * TDLS peer.
1383          */
1384
1385         if (params->listen_interval >= 0)
1386                 sta->listen_interval = params->listen_interval;
1387
1388         if (params->supported_rates) {
1389                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1390                                          sband, params->supported_rates,
1391                                          params->supported_rates_len,
1392                                          &sta->sta.supp_rates[band]);
1393         }
1394
1395         if (params->ht_capa)
1396                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1397                                                   params->ht_capa, sta);
1398
1399         if (params->vht_capa)
1400                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1401                                                     params->vht_capa, sta);
1402
1403         if (params->opmode_notif_used) {
1404                 /* returned value is only needed for rc update, but the
1405                  * rc isn't initialized here yet, so ignore it
1406                  */
1407                 __ieee80211_vht_handle_opmode(sdata, sta,
1408                                               params->opmode_notif,
1409                                               band, false);
1410         }
1411
1412         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1413 #ifdef CONFIG_MAC80211_MESH
1414                 u32 changed = 0;
1415
1416                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1417                         switch (params->plink_state) {
1418                         case NL80211_PLINK_ESTAB:
1419                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1420                                         changed = mesh_plink_inc_estab_count(
1421                                                         sdata);
1422                                 sta->plink_state = params->plink_state;
1423
1424                                 ieee80211_mps_sta_status_update(sta);
1425                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1426                                               sdata->u.mesh.mshcfg.power_mode);
1427                                 break;
1428                         case NL80211_PLINK_LISTEN:
1429                         case NL80211_PLINK_BLOCKED:
1430                         case NL80211_PLINK_OPN_SNT:
1431                         case NL80211_PLINK_OPN_RCVD:
1432                         case NL80211_PLINK_CNF_RCVD:
1433                         case NL80211_PLINK_HOLDING:
1434                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1435                                         changed = mesh_plink_dec_estab_count(
1436                                                         sdata);
1437                                 sta->plink_state = params->plink_state;
1438
1439                                 ieee80211_mps_sta_status_update(sta);
1440                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1441                                                 NL80211_MESH_POWER_UNKNOWN);
1442                                 break;
1443                         default:
1444                                 /*  nothing  */
1445                                 break;
1446                         }
1447                 }
1448
1449                 switch (params->plink_action) {
1450                 case NL80211_PLINK_ACTION_NO_ACTION:
1451                         /* nothing */
1452                         break;
1453                 case NL80211_PLINK_ACTION_OPEN:
1454                         changed |= mesh_plink_open(sta);
1455                         break;
1456                 case NL80211_PLINK_ACTION_BLOCK:
1457                         changed |= mesh_plink_block(sta);
1458                         break;
1459                 }
1460
1461                 if (params->local_pm)
1462                         changed |=
1463                               ieee80211_mps_set_sta_local_pm(sta,
1464                                                              params->local_pm);
1465                 ieee80211_mbss_info_change_notify(sdata, changed);
1466 #endif
1467         }
1468
1469         return 0;
1470 }
1471
1472 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1473                                  const u8 *mac,
1474                                  struct station_parameters *params)
1475 {
1476         struct ieee80211_local *local = wiphy_priv(wiphy);
1477         struct sta_info *sta;
1478         struct ieee80211_sub_if_data *sdata;
1479         int err;
1480         int layer2_update;
1481
1482         if (params->vlan) {
1483                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1484
1485                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1486                     sdata->vif.type != NL80211_IFTYPE_AP)
1487                         return -EINVAL;
1488         } else
1489                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1490
1491         if (ether_addr_equal(mac, sdata->vif.addr))
1492                 return -EINVAL;
1493
1494         if (is_multicast_ether_addr(mac))
1495                 return -EINVAL;
1496
1497         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1498         if (!sta)
1499                 return -ENOMEM;
1500
1501         /*
1502          * defaults -- if userspace wants something else we'll
1503          * change it accordingly in sta_apply_parameters()
1504          */
1505         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1506                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1507                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1508         } else {
1509                 sta->sta.tdls = true;
1510         }
1511
1512         err = sta_apply_parameters(local, sta, params);
1513         if (err) {
1514                 sta_info_free(local, sta);
1515                 return err;
1516         }
1517
1518         /*
1519          * for TDLS, rate control should be initialized only when
1520          * rates are known and station is marked authorized
1521          */
1522         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1523                 rate_control_rate_init(sta);
1524
1525         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1526                 sdata->vif.type == NL80211_IFTYPE_AP;
1527
1528         err = sta_info_insert_rcu(sta);
1529         if (err) {
1530                 rcu_read_unlock();
1531                 return err;
1532         }
1533
1534         if (layer2_update)
1535                 ieee80211_send_layer2_update(sta);
1536
1537         rcu_read_unlock();
1538
1539         return 0;
1540 }
1541
1542 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1543                                  const u8 *mac)
1544 {
1545         struct ieee80211_sub_if_data *sdata;
1546
1547         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549         if (mac)
1550                 return sta_info_destroy_addr_bss(sdata, mac);
1551
1552         sta_info_flush(sdata);
1553         return 0;
1554 }
1555
1556 static int ieee80211_change_station(struct wiphy *wiphy,
1557                                     struct net_device *dev, const u8 *mac,
1558                                     struct station_parameters *params)
1559 {
1560         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1561         struct ieee80211_local *local = wiphy_priv(wiphy);
1562         struct sta_info *sta;
1563         struct ieee80211_sub_if_data *vlansdata;
1564         enum cfg80211_station_type statype;
1565         int err;
1566
1567         mutex_lock(&local->sta_mtx);
1568
1569         sta = sta_info_get_bss(sdata, mac);
1570         if (!sta) {
1571                 err = -ENOENT;
1572                 goto out_err;
1573         }
1574
1575         switch (sdata->vif.type) {
1576         case NL80211_IFTYPE_MESH_POINT:
1577                 if (sdata->u.mesh.user_mpm)
1578                         statype = CFG80211_STA_MESH_PEER_USER;
1579                 else
1580                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1581                 break;
1582         case NL80211_IFTYPE_ADHOC:
1583                 statype = CFG80211_STA_IBSS;
1584                 break;
1585         case NL80211_IFTYPE_STATION:
1586                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1587                         statype = CFG80211_STA_AP_STA;
1588                         break;
1589                 }
1590                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1591                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1592                 else
1593                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1594                 break;
1595         case NL80211_IFTYPE_AP:
1596         case NL80211_IFTYPE_AP_VLAN:
1597                 statype = CFG80211_STA_AP_CLIENT;
1598                 break;
1599         default:
1600                 err = -EOPNOTSUPP;
1601                 goto out_err;
1602         }
1603
1604         err = cfg80211_check_station_change(wiphy, params, statype);
1605         if (err)
1606                 goto out_err;
1607
1608         if (params->vlan && params->vlan != sta->sdata->dev) {
1609                 bool prev_4addr = false;
1610                 bool new_4addr = false;
1611
1612                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1613
1614                 if (params->vlan->ieee80211_ptr->use_4addr) {
1615                         if (vlansdata->u.vlan.sta) {
1616                                 err = -EBUSY;
1617                                 goto out_err;
1618                         }
1619
1620                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1621                         new_4addr = true;
1622                 }
1623
1624                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1625                     sta->sdata->u.vlan.sta) {
1626                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1627                         prev_4addr = true;
1628                 }
1629
1630                 sta->sdata = vlansdata;
1631
1632                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1633                     prev_4addr != new_4addr) {
1634                         if (new_4addr)
1635                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1636                         else
1637                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1638                 }
1639
1640                 ieee80211_send_layer2_update(sta);
1641         }
1642
1643         err = sta_apply_parameters(local, sta, params);
1644         if (err)
1645                 goto out_err;
1646
1647         /* When peer becomes authorized, init rate control as well */
1648         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1649             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1650                 rate_control_rate_init(sta);
1651
1652         mutex_unlock(&local->sta_mtx);
1653
1654         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1655              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1656             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1657             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1658             sta_info_tx_streams(sta) != 1) {
1659                 ht_dbg(sta->sdata,
1660                        "%pM just authorized and MIMO capable - update SMPS\n",
1661                        sta->sta.addr);
1662                 ieee80211_send_smps_action(sta->sdata,
1663                         sta->sdata->bss->req_smps,
1664                         sta->sta.addr,
1665                         sta->sdata->vif.bss_conf.bssid);
1666         }
1667
1668         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1669             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1670                 ieee80211_recalc_ps(local, -1);
1671                 ieee80211_recalc_ps_vif(sdata);
1672         }
1673
1674         return 0;
1675 out_err:
1676         mutex_unlock(&local->sta_mtx);
1677         return err;
1678 }
1679
1680 #ifdef CONFIG_MAC80211_MESH
1681 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1682                                const u8 *dst, const u8 *next_hop)
1683 {
1684         struct ieee80211_sub_if_data *sdata;
1685         struct mesh_path *mpath;
1686         struct sta_info *sta;
1687
1688         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1689
1690         rcu_read_lock();
1691         sta = sta_info_get(sdata, next_hop);
1692         if (!sta) {
1693                 rcu_read_unlock();
1694                 return -ENOENT;
1695         }
1696
1697         mpath = mesh_path_add(sdata, dst);
1698         if (IS_ERR(mpath)) {
1699                 rcu_read_unlock();
1700                 return PTR_ERR(mpath);
1701         }
1702
1703         mesh_path_fix_nexthop(mpath, sta);
1704
1705         rcu_read_unlock();
1706         return 0;
1707 }
1708
1709 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1710                                const u8 *dst)
1711 {
1712         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1713
1714         if (dst)
1715                 return mesh_path_del(sdata, dst);
1716
1717         mesh_path_flush_by_iface(sdata);
1718         return 0;
1719 }
1720
1721 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1722                                   const u8 *dst, const u8 *next_hop)
1723 {
1724         struct ieee80211_sub_if_data *sdata;
1725         struct mesh_path *mpath;
1726         struct sta_info *sta;
1727
1728         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1729
1730         rcu_read_lock();
1731
1732         sta = sta_info_get(sdata, next_hop);
1733         if (!sta) {
1734                 rcu_read_unlock();
1735                 return -ENOENT;
1736         }
1737
1738         mpath = mesh_path_lookup(sdata, dst);
1739         if (!mpath) {
1740                 rcu_read_unlock();
1741                 return -ENOENT;
1742         }
1743
1744         mesh_path_fix_nexthop(mpath, sta);
1745
1746         rcu_read_unlock();
1747         return 0;
1748 }
1749
1750 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1751                             struct mpath_info *pinfo)
1752 {
1753         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1754
1755         if (next_hop_sta)
1756                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1757         else
1758                 memset(next_hop, 0, ETH_ALEN);
1759
1760         memset(pinfo, 0, sizeof(*pinfo));
1761
1762         pinfo->generation = mesh_paths_generation;
1763
1764         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1765                         MPATH_INFO_SN |
1766                         MPATH_INFO_METRIC |
1767                         MPATH_INFO_EXPTIME |
1768                         MPATH_INFO_DISCOVERY_TIMEOUT |
1769                         MPATH_INFO_DISCOVERY_RETRIES |
1770                         MPATH_INFO_FLAGS;
1771
1772         pinfo->frame_qlen = mpath->frame_queue.qlen;
1773         pinfo->sn = mpath->sn;
1774         pinfo->metric = mpath->metric;
1775         if (time_before(jiffies, mpath->exp_time))
1776                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1777         pinfo->discovery_timeout =
1778                         jiffies_to_msecs(mpath->discovery_timeout);
1779         pinfo->discovery_retries = mpath->discovery_retries;
1780         if (mpath->flags & MESH_PATH_ACTIVE)
1781                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1782         if (mpath->flags & MESH_PATH_RESOLVING)
1783                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1784         if (mpath->flags & MESH_PATH_SN_VALID)
1785                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1786         if (mpath->flags & MESH_PATH_FIXED)
1787                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1788         if (mpath->flags & MESH_PATH_RESOLVED)
1789                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1790 }
1791
1792 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1793                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1794
1795 {
1796         struct ieee80211_sub_if_data *sdata;
1797         struct mesh_path *mpath;
1798
1799         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1800
1801         rcu_read_lock();
1802         mpath = mesh_path_lookup(sdata, dst);
1803         if (!mpath) {
1804                 rcu_read_unlock();
1805                 return -ENOENT;
1806         }
1807         memcpy(dst, mpath->dst, ETH_ALEN);
1808         mpath_set_pinfo(mpath, next_hop, pinfo);
1809         rcu_read_unlock();
1810         return 0;
1811 }
1812
1813 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1814                                 int idx, u8 *dst, u8 *next_hop,
1815                                 struct mpath_info *pinfo)
1816 {
1817         struct ieee80211_sub_if_data *sdata;
1818         struct mesh_path *mpath;
1819
1820         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1821
1822         rcu_read_lock();
1823         mpath = mesh_path_lookup_by_idx(sdata, idx);
1824         if (!mpath) {
1825                 rcu_read_unlock();
1826                 return -ENOENT;
1827         }
1828         memcpy(dst, mpath->dst, ETH_ALEN);
1829         mpath_set_pinfo(mpath, next_hop, pinfo);
1830         rcu_read_unlock();
1831         return 0;
1832 }
1833
1834 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1835                                 struct net_device *dev,
1836                                 struct mesh_config *conf)
1837 {
1838         struct ieee80211_sub_if_data *sdata;
1839         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840
1841         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1842         return 0;
1843 }
1844
1845 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1846 {
1847         return (mask >> (parm-1)) & 0x1;
1848 }
1849
1850 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1851                 const struct mesh_setup *setup)
1852 {
1853         u8 *new_ie;
1854         const u8 *old_ie;
1855         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1856                                         struct ieee80211_sub_if_data, u.mesh);
1857
1858         /* allocate information elements */
1859         new_ie = NULL;
1860         old_ie = ifmsh->ie;
1861
1862         if (setup->ie_len) {
1863                 new_ie = kmemdup(setup->ie, setup->ie_len,
1864                                 GFP_KERNEL);
1865                 if (!new_ie)
1866                         return -ENOMEM;
1867         }
1868         ifmsh->ie_len = setup->ie_len;
1869         ifmsh->ie = new_ie;
1870         kfree(old_ie);
1871
1872         /* now copy the rest of the setup parameters */
1873         ifmsh->mesh_id_len = setup->mesh_id_len;
1874         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1875         ifmsh->mesh_sp_id = setup->sync_method;
1876         ifmsh->mesh_pp_id = setup->path_sel_proto;
1877         ifmsh->mesh_pm_id = setup->path_metric;
1878         ifmsh->user_mpm = setup->user_mpm;
1879         ifmsh->mesh_auth_id = setup->auth_id;
1880         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1881         if (setup->is_authenticated)
1882                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1883         if (setup->is_secure)
1884                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1885
1886         /* mcast rate setting in Mesh Node */
1887         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1888                                                 sizeof(setup->mcast_rate));
1889         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1890
1891         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1892         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1893
1894         return 0;
1895 }
1896
1897 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1898                                         struct net_device *dev, u32 mask,
1899                                         const struct mesh_config *nconf)
1900 {
1901         struct mesh_config *conf;
1902         struct ieee80211_sub_if_data *sdata;
1903         struct ieee80211_if_mesh *ifmsh;
1904
1905         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1906         ifmsh = &sdata->u.mesh;
1907
1908         /* Set the config options which we are interested in setting */
1909         conf = &(sdata->u.mesh.mshcfg);
1910         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1911                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1912         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1913                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1914         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1915                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1916         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1917                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1918         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1919                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1920         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1921                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1922         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1923                 conf->element_ttl = nconf->element_ttl;
1924         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1925                 if (ifmsh->user_mpm)
1926                         return -EBUSY;
1927                 conf->auto_open_plinks = nconf->auto_open_plinks;
1928         }
1929         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1930                 conf->dot11MeshNbrOffsetMaxNeighbor =
1931                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1932         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1933                 conf->dot11MeshHWMPmaxPREQretries =
1934                         nconf->dot11MeshHWMPmaxPREQretries;
1935         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1936                 conf->path_refresh_time = nconf->path_refresh_time;
1937         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1938                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1939         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1940                 conf->dot11MeshHWMPactivePathTimeout =
1941                         nconf->dot11MeshHWMPactivePathTimeout;
1942         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1943                 conf->dot11MeshHWMPpreqMinInterval =
1944                         nconf->dot11MeshHWMPpreqMinInterval;
1945         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1946                 conf->dot11MeshHWMPperrMinInterval =
1947                         nconf->dot11MeshHWMPperrMinInterval;
1948         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1949                            mask))
1950                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1951                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1952         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1953                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1954                 ieee80211_mesh_root_setup(ifmsh);
1955         }
1956         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1957                 /* our current gate announcement implementation rides on root
1958                  * announcements, so require this ifmsh to also be a root node
1959                  * */
1960                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1961                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1962                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1963                         ieee80211_mesh_root_setup(ifmsh);
1964                 }
1965                 conf->dot11MeshGateAnnouncementProtocol =
1966                         nconf->dot11MeshGateAnnouncementProtocol;
1967         }
1968         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1969                 conf->dot11MeshHWMPRannInterval =
1970                         nconf->dot11MeshHWMPRannInterval;
1971         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1972                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1973         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1974                 /* our RSSI threshold implementation is supported only for
1975                  * devices that report signal in dBm.
1976                  */
1977                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1978                         return -ENOTSUPP;
1979                 conf->rssi_threshold = nconf->rssi_threshold;
1980         }
1981         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1982                 conf->ht_opmode = nconf->ht_opmode;
1983                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1984                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1985         }
1986         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1987                 conf->dot11MeshHWMPactivePathToRootTimeout =
1988                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1989         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1990                 conf->dot11MeshHWMProotInterval =
1991                         nconf->dot11MeshHWMProotInterval;
1992         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1993                 conf->dot11MeshHWMPconfirmationInterval =
1994                         nconf->dot11MeshHWMPconfirmationInterval;
1995         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1996                 conf->power_mode = nconf->power_mode;
1997                 ieee80211_mps_local_status_update(sdata);
1998         }
1999         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2000                 conf->dot11MeshAwakeWindowDuration =
2001                         nconf->dot11MeshAwakeWindowDuration;
2002         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2003                 conf->plink_timeout = nconf->plink_timeout;
2004         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2005         return 0;
2006 }
2007
2008 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2009                                const struct mesh_config *conf,
2010                                const struct mesh_setup *setup)
2011 {
2012         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2013         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2014         int err;
2015
2016         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2017         err = copy_mesh_setup(ifmsh, setup);
2018         if (err)
2019                 return err;
2020
2021         /* can mesh use other SMPS modes? */
2022         sdata->smps_mode = IEEE80211_SMPS_OFF;
2023         sdata->needed_rx_chains = sdata->local->rx_chains;
2024
2025         mutex_lock(&sdata->local->mtx);
2026         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2027                                         IEEE80211_CHANCTX_SHARED);
2028         mutex_unlock(&sdata->local->mtx);
2029         if (err)
2030                 return err;
2031
2032         return ieee80211_start_mesh(sdata);
2033 }
2034
2035 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2036 {
2037         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2038
2039         ieee80211_stop_mesh(sdata);
2040         mutex_lock(&sdata->local->mtx);
2041         ieee80211_vif_release_channel(sdata);
2042         mutex_unlock(&sdata->local->mtx);
2043
2044         return 0;
2045 }
2046 #endif
2047
2048 static int ieee80211_change_bss(struct wiphy *wiphy,
2049                                 struct net_device *dev,
2050                                 struct bss_parameters *params)
2051 {
2052         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2053         enum ieee80211_band band;
2054         u32 changed = 0;
2055
2056         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2057                 return -ENOENT;
2058
2059         band = ieee80211_get_sdata_band(sdata);
2060
2061         if (params->use_cts_prot >= 0) {
2062                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2063                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2064         }
2065         if (params->use_short_preamble >= 0) {
2066                 sdata->vif.bss_conf.use_short_preamble =
2067                         params->use_short_preamble;
2068                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2069         }
2070
2071         if (!sdata->vif.bss_conf.use_short_slot &&
2072             band == IEEE80211_BAND_5GHZ) {
2073                 sdata->vif.bss_conf.use_short_slot = true;
2074                 changed |= BSS_CHANGED_ERP_SLOT;
2075         }
2076
2077         if (params->use_short_slot_time >= 0) {
2078                 sdata->vif.bss_conf.use_short_slot =
2079                         params->use_short_slot_time;
2080                 changed |= BSS_CHANGED_ERP_SLOT;
2081         }
2082
2083         if (params->basic_rates) {
2084                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2085                                          wiphy->bands[band],
2086                                          params->basic_rates,
2087                                          params->basic_rates_len,
2088                                          &sdata->vif.bss_conf.basic_rates);
2089                 changed |= BSS_CHANGED_BASIC_RATES;
2090         }
2091
2092         if (params->ap_isolate >= 0) {
2093                 if (params->ap_isolate)
2094                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2095                 else
2096                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2097         }
2098
2099         if (params->ht_opmode >= 0) {
2100                 sdata->vif.bss_conf.ht_operation_mode =
2101                         (u16) params->ht_opmode;
2102                 changed |= BSS_CHANGED_HT;
2103         }
2104
2105         if (params->p2p_ctwindow >= 0) {
2106                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2107                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2108                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2109                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2110                 changed |= BSS_CHANGED_P2P_PS;
2111         }
2112
2113         if (params->p2p_opp_ps > 0) {
2114                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2115                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2116                 changed |= BSS_CHANGED_P2P_PS;
2117         } else if (params->p2p_opp_ps == 0) {
2118                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2119                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2120                 changed |= BSS_CHANGED_P2P_PS;
2121         }
2122
2123         ieee80211_bss_info_change_notify(sdata, changed);
2124
2125         return 0;
2126 }
2127
2128 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2129                                     struct net_device *dev,
2130                                     struct ieee80211_txq_params *params)
2131 {
2132         struct ieee80211_local *local = wiphy_priv(wiphy);
2133         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2134         struct ieee80211_tx_queue_params p;
2135
2136         if (!local->ops->conf_tx)
2137                 return -EOPNOTSUPP;
2138
2139         if (local->hw.queues < IEEE80211_NUM_ACS)
2140                 return -EOPNOTSUPP;
2141
2142         memset(&p, 0, sizeof(p));
2143         p.aifs = params->aifs;
2144         p.cw_max = params->cwmax;
2145         p.cw_min = params->cwmin;
2146         p.txop = params->txop;
2147
2148         /*
2149          * Setting tx queue params disables u-apsd because it's only
2150          * called in master mode.
2151          */
2152         p.uapsd = false;
2153
2154         sdata->tx_conf[params->ac] = p;
2155         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2156                 wiphy_debug(local->hw.wiphy,
2157                             "failed to set TX queue parameters for AC %d\n",
2158                             params->ac);
2159                 return -EINVAL;
2160         }
2161
2162         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2163
2164         return 0;
2165 }
2166
2167 #ifdef CONFIG_PM
2168 static int ieee80211_suspend(struct wiphy *wiphy,
2169                              struct cfg80211_wowlan *wowlan)
2170 {
2171         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2172 }
2173
2174 static int ieee80211_resume(struct wiphy *wiphy)
2175 {
2176         return __ieee80211_resume(wiphy_priv(wiphy));
2177 }
2178 #else
2179 #define ieee80211_suspend NULL
2180 #define ieee80211_resume NULL
2181 #endif
2182
2183 static int ieee80211_scan(struct wiphy *wiphy,
2184                           struct cfg80211_scan_request *req)
2185 {
2186         struct ieee80211_sub_if_data *sdata;
2187
2188         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2189
2190         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2191         case NL80211_IFTYPE_STATION:
2192         case NL80211_IFTYPE_ADHOC:
2193         case NL80211_IFTYPE_MESH_POINT:
2194         case NL80211_IFTYPE_P2P_CLIENT:
2195         case NL80211_IFTYPE_P2P_DEVICE:
2196                 break;
2197         case NL80211_IFTYPE_P2P_GO:
2198                 if (sdata->local->ops->hw_scan)
2199                         break;
2200                 /*
2201                  * FIXME: implement NoA while scanning in software,
2202                  * for now fall through to allow scanning only when
2203                  * beaconing hasn't been configured yet
2204                  */
2205         case NL80211_IFTYPE_AP:
2206                 /*
2207                  * If the scan has been forced (and the driver supports
2208                  * forcing), don't care about being beaconing already.
2209                  * This will create problems to the attached stations (e.g. all
2210                  * the  frames sent while scanning on other channel will be
2211                  * lost)
2212                  */
2213                 if (sdata->u.ap.beacon &&
2214                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2215                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2216                         return -EOPNOTSUPP;
2217                 break;
2218         default:
2219                 return -EOPNOTSUPP;
2220         }
2221
2222         return ieee80211_request_scan(sdata, req);
2223 }
2224
2225 static int
2226 ieee80211_sched_scan_start(struct wiphy *wiphy,
2227                            struct net_device *dev,
2228                            struct cfg80211_sched_scan_request *req)
2229 {
2230         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2231
2232         if (!sdata->local->ops->sched_scan_start)
2233                 return -EOPNOTSUPP;
2234
2235         return ieee80211_request_sched_scan_start(sdata, req);
2236 }
2237
2238 static int
2239 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2240 {
2241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2242
2243         if (!sdata->local->ops->sched_scan_stop)
2244                 return -EOPNOTSUPP;
2245
2246         return ieee80211_request_sched_scan_stop(sdata);
2247 }
2248
2249 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2250                           struct cfg80211_auth_request *req)
2251 {
2252         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2253 }
2254
2255 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2256                            struct cfg80211_assoc_request *req)
2257 {
2258         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2259 }
2260
2261 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2262                             struct cfg80211_deauth_request *req)
2263 {
2264         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2265 }
2266
2267 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2268                               struct cfg80211_disassoc_request *req)
2269 {
2270         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2271 }
2272
2273 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2274                                struct cfg80211_ibss_params *params)
2275 {
2276         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2277 }
2278
2279 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2280 {
2281         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2282 }
2283
2284 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2285                                     int rate[IEEE80211_NUM_BANDS])
2286 {
2287         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2288
2289         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2290                sizeof(int) * IEEE80211_NUM_BANDS);
2291
2292         return 0;
2293 }
2294
2295 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2296 {
2297         struct ieee80211_local *local = wiphy_priv(wiphy);
2298         int err;
2299
2300         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2301                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2302
2303                 if (err)
2304                         return err;
2305         }
2306
2307         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2308                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2309
2310                 if (err)
2311                         return err;
2312         }
2313
2314         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2315                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2316
2317                 if (err)
2318                         return err;
2319         }
2320
2321         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2322                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2323                         return -EINVAL;
2324                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2325         }
2326         if (changed & WIPHY_PARAM_RETRY_LONG) {
2327                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2328                         return -EINVAL;
2329                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2330         }
2331         if (changed &
2332             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2333                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2334
2335         return 0;
2336 }
2337
2338 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2339                                   struct wireless_dev *wdev,
2340                                   enum nl80211_tx_power_setting type, int mbm)
2341 {
2342         struct ieee80211_local *local = wiphy_priv(wiphy);
2343         struct ieee80211_sub_if_data *sdata;
2344
2345         if (wdev) {
2346                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2347
2348                 switch (type) {
2349                 case NL80211_TX_POWER_AUTOMATIC:
2350                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2351                         break;
2352                 case NL80211_TX_POWER_LIMITED:
2353                 case NL80211_TX_POWER_FIXED:
2354                         if (mbm < 0 || (mbm % 100))
2355                                 return -EOPNOTSUPP;
2356                         sdata->user_power_level = MBM_TO_DBM(mbm);
2357                         break;
2358                 }
2359
2360                 ieee80211_recalc_txpower(sdata);
2361
2362                 return 0;
2363         }
2364
2365         switch (type) {
2366         case NL80211_TX_POWER_AUTOMATIC:
2367                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2368                 break;
2369         case NL80211_TX_POWER_LIMITED:
2370         case NL80211_TX_POWER_FIXED:
2371                 if (mbm < 0 || (mbm % 100))
2372                         return -EOPNOTSUPP;
2373                 local->user_power_level = MBM_TO_DBM(mbm);
2374                 break;
2375         }
2376
2377         mutex_lock(&local->iflist_mtx);
2378         list_for_each_entry(sdata, &local->interfaces, list)
2379                 sdata->user_power_level = local->user_power_level;
2380         list_for_each_entry(sdata, &local->interfaces, list)
2381                 ieee80211_recalc_txpower(sdata);
2382         mutex_unlock(&local->iflist_mtx);
2383
2384         return 0;
2385 }
2386
2387 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2388                                   struct wireless_dev *wdev,
2389                                   int *dbm)
2390 {
2391         struct ieee80211_local *local = wiphy_priv(wiphy);
2392         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2393
2394         if (!local->use_chanctx)
2395                 *dbm = local->hw.conf.power_level;
2396         else
2397                 *dbm = sdata->vif.bss_conf.txpower;
2398
2399         return 0;
2400 }
2401
2402 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2403                                   const u8 *addr)
2404 {
2405         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2406
2407         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2408
2409         return 0;
2410 }
2411
2412 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2413 {
2414         struct ieee80211_local *local = wiphy_priv(wiphy);
2415
2416         drv_rfkill_poll(local);
2417 }
2418
2419 #ifdef CONFIG_NL80211_TESTMODE
2420 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2421                                   struct wireless_dev *wdev,
2422                                   void *data, int len)
2423 {
2424         struct ieee80211_local *local = wiphy_priv(wiphy);
2425         struct ieee80211_vif *vif = NULL;
2426
2427         if (!local->ops->testmode_cmd)
2428                 return -EOPNOTSUPP;
2429
2430         if (wdev) {
2431                 struct ieee80211_sub_if_data *sdata;
2432
2433                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2434                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2435                         vif = &sdata->vif;
2436         }
2437
2438         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2439 }
2440
2441 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2442                                    struct sk_buff *skb,
2443                                    struct netlink_callback *cb,
2444                                    void *data, int len)
2445 {
2446         struct ieee80211_local *local = wiphy_priv(wiphy);
2447
2448         if (!local->ops->testmode_dump)
2449                 return -EOPNOTSUPP;
2450
2451         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2452 }
2453 #endif
2454
2455 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2456                                 enum ieee80211_smps_mode smps_mode)
2457 {
2458         struct sta_info *sta;
2459         enum ieee80211_smps_mode old_req;
2460         int i;
2461
2462         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2463                 return -EINVAL;
2464
2465         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2466                 return 0;
2467
2468         old_req = sdata->u.ap.req_smps;
2469         sdata->u.ap.req_smps = smps_mode;
2470
2471         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2472         if (old_req == smps_mode ||
2473             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2474                 return 0;
2475
2476          /* If no associated stations, there's no need to do anything */
2477         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2478                 sdata->smps_mode = smps_mode;
2479                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2480                 return 0;
2481         }
2482
2483         ht_dbg(sdata,
2484                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2485                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2486
2487         mutex_lock(&sdata->local->sta_mtx);
2488         for (i = 0; i < STA_HASH_SIZE; i++) {
2489                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2490                                 lockdep_is_held(&sdata->local->sta_mtx));
2491                      sta;
2492                      sta = rcu_dereference_protected(sta->hnext,
2493                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2494                         /*
2495                          * Only stations associated to our AP and
2496                          * associated VLANs
2497                          */
2498                         if (sta->sdata->bss != &sdata->u.ap)
2499                                 continue;
2500
2501                         /* This station doesn't support MIMO - skip it */
2502                         if (sta_info_tx_streams(sta) == 1)
2503                                 continue;
2504
2505                         /*
2506                          * Don't wake up a STA just to send the action frame
2507                          * unless we are getting more restrictive.
2508                          */
2509                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2510                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2511                                                            smps_mode)) {
2512                                 ht_dbg(sdata,
2513                                        "Won't send SMPS to sleeping STA %pM\n",
2514                                        sta->sta.addr);
2515                                 continue;
2516                         }
2517
2518                         /*
2519                          * If the STA is not authorized, wait until it gets
2520                          * authorized and the action frame will be sent then.
2521                          */
2522                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2523                                 continue;
2524
2525                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2526                         ieee80211_send_smps_action(sdata, smps_mode,
2527                                                    sta->sta.addr,
2528                                                    sdata->vif.bss_conf.bssid);
2529                 }
2530         }
2531         mutex_unlock(&sdata->local->sta_mtx);
2532
2533         sdata->smps_mode = smps_mode;
2534         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2535
2536         return 0;
2537 }
2538
2539 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2540                                  enum ieee80211_smps_mode smps_mode)
2541 {
2542         const u8 *ap;
2543         enum ieee80211_smps_mode old_req;
2544         int err;
2545
2546         lockdep_assert_held(&sdata->wdev.mtx);
2547
2548         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2549                 return -EINVAL;
2550
2551         old_req = sdata->u.mgd.req_smps;
2552         sdata->u.mgd.req_smps = smps_mode;
2553
2554         if (old_req == smps_mode &&
2555             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2556                 return 0;
2557
2558         /*
2559          * If not associated, or current association is not an HT
2560          * association, there's no need to do anything, just store
2561          * the new value until we associate.
2562          */
2563         if (!sdata->u.mgd.associated ||
2564             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2565                 return 0;
2566
2567         ap = sdata->u.mgd.associated->bssid;
2568
2569         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2570                 if (sdata->u.mgd.powersave)
2571                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2572                 else
2573                         smps_mode = IEEE80211_SMPS_OFF;
2574         }
2575
2576         /* send SM PS frame to AP */
2577         err = ieee80211_send_smps_action(sdata, smps_mode,
2578                                          ap, ap);
2579         if (err)
2580                 sdata->u.mgd.req_smps = old_req;
2581
2582         return err;
2583 }
2584
2585 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2586                                     bool enabled, int timeout)
2587 {
2588         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2589         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2590
2591         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2592                 return -EOPNOTSUPP;
2593
2594         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2595                 return -EOPNOTSUPP;
2596
2597         if (enabled == sdata->u.mgd.powersave &&
2598             timeout == local->dynamic_ps_forced_timeout)
2599                 return 0;
2600
2601         sdata->u.mgd.powersave = enabled;
2602         local->dynamic_ps_forced_timeout = timeout;
2603
2604         /* no change, but if automatic follow powersave */
2605         sdata_lock(sdata);
2606         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2607         sdata_unlock(sdata);
2608
2609         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2610                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2611
2612         ieee80211_recalc_ps(local, -1);
2613         ieee80211_recalc_ps_vif(sdata);
2614
2615         return 0;
2616 }
2617
2618 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2619                                          struct net_device *dev,
2620                                          s32 rssi_thold, u32 rssi_hyst)
2621 {
2622         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2623         struct ieee80211_vif *vif = &sdata->vif;
2624         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2625
2626         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2627             rssi_hyst == bss_conf->cqm_rssi_hyst)
2628                 return 0;
2629
2630         bss_conf->cqm_rssi_thold = rssi_thold;
2631         bss_conf->cqm_rssi_hyst = rssi_hyst;
2632
2633         /* tell the driver upon association, unless already associated */
2634         if (sdata->u.mgd.associated &&
2635             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2636                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2637
2638         return 0;
2639 }
2640
2641 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2642                                       struct net_device *dev,
2643                                       const u8 *addr,
2644                                       const struct cfg80211_bitrate_mask *mask)
2645 {
2646         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2647         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2648         int i, ret;
2649
2650         if (!ieee80211_sdata_running(sdata))
2651                 return -ENETDOWN;
2652
2653         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2654                 ret = drv_set_bitrate_mask(local, sdata, mask);
2655                 if (ret)
2656                         return ret;
2657         }
2658
2659         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2660                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2661                 int j;
2662
2663                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2664                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2665                        sizeof(mask->control[i].ht_mcs));
2666
2667                 sdata->rc_has_mcs_mask[i] = false;
2668                 if (!sband)
2669                         continue;
2670
2671                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2672                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2673                                 sdata->rc_has_mcs_mask[i] = true;
2674                                 break;
2675                         }
2676         }
2677
2678         return 0;
2679 }
2680
2681 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2682                                     struct ieee80211_sub_if_data *sdata,
2683                                     struct ieee80211_channel *channel,
2684                                     unsigned int duration, u64 *cookie,
2685                                     struct sk_buff *txskb,
2686                                     enum ieee80211_roc_type type)
2687 {
2688         struct ieee80211_roc_work *roc, *tmp;
2689         bool queued = false;
2690         int ret;
2691
2692         lockdep_assert_held(&local->mtx);
2693
2694         if (local->use_chanctx && !local->ops->remain_on_channel)
2695                 return -EOPNOTSUPP;
2696
2697         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2698         if (!roc)
2699                 return -ENOMEM;
2700
2701         /*
2702          * If the duration is zero, then the driver
2703          * wouldn't actually do anything. Set it to
2704          * 10 for now.
2705          *
2706          * TODO: cancel the off-channel operation
2707          *       when we get the SKB's TX status and
2708          *       the wait time was zero before.
2709          */
2710         if (!duration)
2711                 duration = 10;
2712
2713         roc->chan = channel;
2714         roc->duration = duration;
2715         roc->req_duration = duration;
2716         roc->frame = txskb;
2717         roc->type = type;
2718         roc->mgmt_tx_cookie = (unsigned long)txskb;
2719         roc->sdata = sdata;
2720         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2721         INIT_LIST_HEAD(&roc->dependents);
2722
2723         /*
2724          * cookie is either the roc cookie (for normal roc)
2725          * or the SKB (for mgmt TX)
2726          */
2727         if (!txskb) {
2728                 /* local->mtx protects this */
2729                 local->roc_cookie_counter++;
2730                 roc->cookie = local->roc_cookie_counter;
2731                 /* wow, you wrapped 64 bits ... more likely a bug */
2732                 if (WARN_ON(roc->cookie == 0)) {
2733                         roc->cookie = 1;
2734                         local->roc_cookie_counter++;
2735                 }
2736                 *cookie = roc->cookie;
2737         } else {
2738                 *cookie = (unsigned long)txskb;
2739         }
2740
2741         /* if there's one pending or we're scanning, queue this one */
2742         if (!list_empty(&local->roc_list) ||
2743             local->scanning || local->radar_detect_enabled)
2744                 goto out_check_combine;
2745
2746         /* if not HW assist, just queue & schedule work */
2747         if (!local->ops->remain_on_channel) {
2748                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2749                 goto out_queue;
2750         }
2751
2752         /* otherwise actually kick it off here (for error handling) */
2753
2754         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2755         if (ret) {
2756                 kfree(roc);
2757                 return ret;
2758         }
2759
2760         roc->started = true;
2761         goto out_queue;
2762
2763  out_check_combine:
2764         list_for_each_entry(tmp, &local->roc_list, list) {
2765                 if (tmp->chan != channel || tmp->sdata != sdata)
2766                         continue;
2767
2768                 /*
2769                  * Extend this ROC if possible:
2770                  *
2771                  * If it hasn't started yet, just increase the duration
2772                  * and add the new one to the list of dependents.
2773                  * If the type of the new ROC has higher priority, modify the
2774                  * type of the previous one to match that of the new one.
2775                  */
2776                 if (!tmp->started) {
2777                         list_add_tail(&roc->list, &tmp->dependents);
2778                         tmp->duration = max(tmp->duration, roc->duration);
2779                         tmp->type = max(tmp->type, roc->type);
2780                         queued = true;
2781                         break;
2782                 }
2783
2784                 /* If it has already started, it's more difficult ... */
2785                 if (local->ops->remain_on_channel) {
2786                         unsigned long j = jiffies;
2787
2788                         /*
2789                          * In the offloaded ROC case, if it hasn't begun, add
2790                          * this new one to the dependent list to be handled
2791                          * when the master one begins. If it has begun,
2792                          * check that there's still a minimum time left and
2793                          * if so, start this one, transmitting the frame, but
2794                          * add it to the list directly after this one with
2795                          * a reduced time so we'll ask the driver to execute
2796                          * it right after finishing the previous one, in the
2797                          * hope that it'll also be executed right afterwards,
2798                          * effectively extending the old one.
2799                          * If there's no minimum time left, just add it to the
2800                          * normal list.
2801                          * TODO: the ROC type is ignored here, assuming that it
2802                          * is better to immediately use the current ROC.
2803                          */
2804                         if (!tmp->hw_begun) {
2805                                 list_add_tail(&roc->list, &tmp->dependents);
2806                                 queued = true;
2807                                 break;
2808                         }
2809
2810                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2811                                         tmp->hw_start_time +
2812                                         msecs_to_jiffies(tmp->duration))) {
2813                                 int new_dur;
2814
2815                                 ieee80211_handle_roc_started(roc);
2816
2817                                 new_dur = roc->duration -
2818                                           jiffies_to_msecs(tmp->hw_start_time +
2819                                                            msecs_to_jiffies(
2820                                                                 tmp->duration) -
2821                                                            j);
2822
2823                                 if (new_dur > 0) {
2824                                         /* add right after tmp */
2825                                         list_add(&roc->list, &tmp->list);
2826                                 } else {
2827                                         list_add_tail(&roc->list,
2828                                                       &tmp->dependents);
2829                                 }
2830                                 queued = true;
2831                         }
2832                 } else if (del_timer_sync(&tmp->work.timer)) {
2833                         unsigned long new_end;
2834
2835                         /*
2836                          * In the software ROC case, cancel the timer, if
2837                          * that fails then the finish work is already
2838                          * queued/pending and thus we queue the new ROC
2839                          * normally, if that succeeds then we can extend
2840                          * the timer duration and TX the frame (if any.)
2841                          */
2842
2843                         list_add_tail(&roc->list, &tmp->dependents);
2844                         queued = true;
2845
2846                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2847
2848                         /* ok, it was started & we canceled timer */
2849                         if (time_after(new_end, tmp->work.timer.expires))
2850                                 mod_timer(&tmp->work.timer, new_end);
2851                         else
2852                                 add_timer(&tmp->work.timer);
2853
2854                         ieee80211_handle_roc_started(roc);
2855                 }
2856                 break;
2857         }
2858
2859  out_queue:
2860         if (!queued)
2861                 list_add_tail(&roc->list, &local->roc_list);
2862
2863         return 0;
2864 }
2865
2866 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2867                                        struct wireless_dev *wdev,
2868                                        struct ieee80211_channel *chan,
2869                                        unsigned int duration,
2870                                        u64 *cookie)
2871 {
2872         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2873         struct ieee80211_local *local = sdata->local;
2874         int ret;
2875
2876         mutex_lock(&local->mtx);
2877         ret = ieee80211_start_roc_work(local, sdata, chan,
2878                                        duration, cookie, NULL,
2879                                        IEEE80211_ROC_TYPE_NORMAL);
2880         mutex_unlock(&local->mtx);
2881
2882         return ret;
2883 }
2884
2885 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2886                                 u64 cookie, bool mgmt_tx)
2887 {
2888         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2889         int ret;
2890
2891         mutex_lock(&local->mtx);
2892         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2893                 struct ieee80211_roc_work *dep, *tmp2;
2894
2895                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2896                         if (!mgmt_tx && dep->cookie != cookie)
2897                                 continue;
2898                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2899                                 continue;
2900                         /* found dependent item -- just remove it */
2901                         list_del(&dep->list);
2902                         mutex_unlock(&local->mtx);
2903
2904                         ieee80211_roc_notify_destroy(dep, true);
2905                         return 0;
2906                 }
2907
2908                 if (!mgmt_tx && roc->cookie != cookie)
2909                         continue;
2910                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2911                         continue;
2912
2913                 found = roc;
2914                 break;
2915         }
2916
2917         if (!found) {
2918                 mutex_unlock(&local->mtx);
2919                 return -ENOENT;
2920         }
2921
2922         /*
2923          * We found the item to cancel, so do that. Note that it
2924          * may have dependents, which we also cancel (and send
2925          * the expired signal for.) Not doing so would be quite
2926          * tricky here, but we may need to fix it later.
2927          */
2928
2929         if (local->ops->remain_on_channel) {
2930                 if (found->started) {
2931                         ret = drv_cancel_remain_on_channel(local);
2932                         if (WARN_ON_ONCE(ret)) {
2933                                 mutex_unlock(&local->mtx);
2934                                 return ret;
2935                         }
2936                 }
2937
2938                 list_del(&found->list);
2939
2940                 if (found->started)
2941                         ieee80211_start_next_roc(local);
2942                 mutex_unlock(&local->mtx);
2943
2944                 ieee80211_roc_notify_destroy(found, true);
2945         } else {
2946                 /* work may be pending so use it all the time */
2947                 found->abort = true;
2948                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2949
2950                 mutex_unlock(&local->mtx);
2951
2952                 /* work will clean up etc */
2953                 flush_delayed_work(&found->work);
2954                 WARN_ON(!found->to_be_freed);
2955                 kfree(found);
2956         }
2957
2958         return 0;
2959 }
2960
2961 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2962                                               struct wireless_dev *wdev,
2963                                               u64 cookie)
2964 {
2965         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2966         struct ieee80211_local *local = sdata->local;
2967
2968         return ieee80211_cancel_roc(local, cookie, false);
2969 }
2970
2971 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2972                                            struct net_device *dev,
2973                                            struct cfg80211_chan_def *chandef,
2974                                            u32 cac_time_ms)
2975 {
2976         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2977         struct ieee80211_local *local = sdata->local;
2978         int err;
2979
2980         mutex_lock(&local->mtx);
2981         if (!list_empty(&local->roc_list) || local->scanning) {
2982                 err = -EBUSY;
2983                 goto out_unlock;
2984         }
2985
2986         /* whatever, but channel contexts should not complain about that one */
2987         sdata->smps_mode = IEEE80211_SMPS_OFF;
2988         sdata->needed_rx_chains = local->rx_chains;
2989
2990         err = ieee80211_vif_use_channel(sdata, chandef,
2991                                         IEEE80211_CHANCTX_SHARED);
2992         if (err)
2993                 goto out_unlock;
2994
2995         ieee80211_queue_delayed_work(&sdata->local->hw,
2996                                      &sdata->dfs_cac_timer_work,
2997                                      msecs_to_jiffies(cac_time_ms));
2998
2999  out_unlock:
3000         mutex_unlock(&local->mtx);
3001         return err;
3002 }
3003
3004 static struct cfg80211_beacon_data *
3005 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3006 {
3007         struct cfg80211_beacon_data *new_beacon;
3008         u8 *pos;
3009         int len;
3010
3011         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3012               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3013               beacon->probe_resp_len;
3014
3015         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3016         if (!new_beacon)
3017                 return NULL;
3018
3019         pos = (u8 *)(new_beacon + 1);
3020         if (beacon->head_len) {
3021                 new_beacon->head_len = beacon->head_len;
3022                 new_beacon->head = pos;
3023                 memcpy(pos, beacon->head, beacon->head_len);
3024                 pos += beacon->head_len;
3025         }
3026         if (beacon->tail_len) {
3027                 new_beacon->tail_len = beacon->tail_len;
3028                 new_beacon->tail = pos;
3029                 memcpy(pos, beacon->tail, beacon->tail_len);
3030                 pos += beacon->tail_len;
3031         }
3032         if (beacon->beacon_ies_len) {
3033                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3034                 new_beacon->beacon_ies = pos;
3035                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3036                 pos += beacon->beacon_ies_len;
3037         }
3038         if (beacon->proberesp_ies_len) {
3039                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3040                 new_beacon->proberesp_ies = pos;
3041                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3042                 pos += beacon->proberesp_ies_len;
3043         }
3044         if (beacon->assocresp_ies_len) {
3045                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3046                 new_beacon->assocresp_ies = pos;
3047                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3048                 pos += beacon->assocresp_ies_len;
3049         }
3050         if (beacon->probe_resp_len) {
3051                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3052                 beacon->probe_resp = pos;
3053                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3054                 pos += beacon->probe_resp_len;
3055         }
3056
3057         return new_beacon;
3058 }
3059
3060 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3061 {
3062         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3063
3064         ieee80211_queue_work(&sdata->local->hw,
3065                              &sdata->csa_finalize_work);
3066 }
3067 EXPORT_SYMBOL(ieee80211_csa_finish);
3068
3069 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3070                                           u32 *changed)
3071 {
3072         int err;
3073
3074         switch (sdata->vif.type) {
3075         case NL80211_IFTYPE_AP:
3076                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3077                 kfree(sdata->u.ap.next_beacon);
3078                 sdata->u.ap.next_beacon = NULL;
3079
3080                 if (err < 0)
3081                         return err;
3082                 *changed |= err;
3083                 break;
3084         case NL80211_IFTYPE_ADHOC:
3085                 err = ieee80211_ibss_finish_csa(sdata);
3086                 if (err < 0)
3087                         return err;
3088                 *changed |= err;
3089                 break;
3090 #ifdef CONFIG_MAC80211_MESH
3091         case NL80211_IFTYPE_MESH_POINT:
3092                 err = ieee80211_mesh_finish_csa(sdata);
3093                 if (err < 0)
3094                         return err;
3095                 *changed |= err;
3096                 break;
3097 #endif
3098         default:
3099                 WARN_ON(1);
3100                 return -EINVAL;
3101         }
3102
3103         return 0;
3104 }
3105
3106 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3107 {
3108         struct ieee80211_local *local = sdata->local;
3109         u32 changed = 0;
3110         int err;
3111
3112         sdata_assert_lock(sdata);
3113         lockdep_assert_held(&local->mtx);
3114
3115         sdata->radar_required = sdata->csa_radar_required;
3116         err = ieee80211_vif_change_channel(sdata, &changed);
3117         if (err < 0)
3118                 return err;
3119
3120         if (!local->use_chanctx) {
3121                 local->_oper_chandef = sdata->csa_chandef;
3122                 ieee80211_hw_config(local, 0);
3123         }
3124
3125         sdata->vif.csa_active = false;
3126
3127         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3128         if (err)
3129                 return err;
3130
3131         ieee80211_bss_info_change_notify(sdata, changed);
3132         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3133
3134         if (!ieee80211_csa_needs_block_tx(local))
3135                 ieee80211_wake_queues_by_reason(&local->hw,
3136                                         IEEE80211_MAX_QUEUE_MAP,
3137                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3138
3139         return 0;
3140 }
3141
3142 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3143 {
3144         if (__ieee80211_csa_finalize(sdata)) {
3145                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3146                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3147                                     GFP_KERNEL);
3148         }
3149 }
3150
3151 void ieee80211_csa_finalize_work(struct work_struct *work)
3152 {
3153         struct ieee80211_sub_if_data *sdata =
3154                 container_of(work, struct ieee80211_sub_if_data,
3155                              csa_finalize_work);
3156         struct ieee80211_local *local = sdata->local;
3157
3158         sdata_lock(sdata);
3159         mutex_lock(&local->mtx);
3160
3161         /* AP might have been stopped while waiting for the lock. */
3162         if (!sdata->vif.csa_active)
3163                 goto unlock;
3164
3165         if (!ieee80211_sdata_running(sdata))
3166                 goto unlock;
3167
3168         ieee80211_csa_finalize(sdata);
3169
3170 unlock:
3171         mutex_unlock(&local->mtx);
3172         sdata_unlock(sdata);
3173 }
3174
3175 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3176                                     struct cfg80211_csa_settings *params,
3177                                     u32 *changed)
3178 {
3179         int err;
3180
3181         switch (sdata->vif.type) {
3182         case NL80211_IFTYPE_AP:
3183                 sdata->u.ap.next_beacon =
3184                         cfg80211_beacon_dup(&params->beacon_after);
3185                 if (!sdata->u.ap.next_beacon)
3186                         return -ENOMEM;
3187
3188                 /*
3189                  * With a count of 0, we don't have to wait for any
3190                  * TBTT before switching, so complete the CSA
3191                  * immediately.  In theory, with a count == 1 we
3192                  * should delay the switch until just before the next
3193                  * TBTT, but that would complicate things so we switch
3194                  * immediately too.  If we would delay the switch
3195                  * until the next TBTT, we would have to set the probe
3196                  * response here.
3197                  *
3198                  * TODO: A channel switch with count <= 1 without
3199                  * sending a CSA action frame is kind of useless,
3200                  * because the clients won't know we're changing
3201                  * channels.  The action frame must be implemented
3202                  * either here or in the userspace.
3203                  */
3204                 if (params->count <= 1)
3205                         break;
3206
3207                 if ((params->n_counter_offsets_beacon >
3208                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3209                     (params->n_counter_offsets_presp >
3210                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3211                         return -EINVAL;
3212
3213                 /* make sure we don't have garbage in other counters */
3214                 memset(sdata->csa_counter_offset_beacon, 0,
3215                        sizeof(sdata->csa_counter_offset_beacon));
3216                 memset(sdata->csa_counter_offset_presp, 0,
3217                        sizeof(sdata->csa_counter_offset_presp));
3218
3219                 memcpy(sdata->csa_counter_offset_beacon,
3220                        params->counter_offsets_beacon,
3221                        params->n_counter_offsets_beacon * sizeof(u16));
3222                 memcpy(sdata->csa_counter_offset_presp,
3223                        params->counter_offsets_presp,
3224                        params->n_counter_offsets_presp * sizeof(u16));
3225
3226                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3227                 if (err < 0) {
3228                         kfree(sdata->u.ap.next_beacon);
3229                         return err;
3230                 }
3231                 *changed |= err;
3232
3233                 break;
3234         case NL80211_IFTYPE_ADHOC:
3235                 if (!sdata->vif.bss_conf.ibss_joined)
3236                         return -EINVAL;
3237
3238                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3239                         return -EINVAL;
3240
3241                 switch (params->chandef.width) {
3242                 case NL80211_CHAN_WIDTH_40:
3243                         if (cfg80211_get_chandef_type(&params->chandef) !=
3244                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3245                                 return -EINVAL;
3246                 case NL80211_CHAN_WIDTH_5:
3247                 case NL80211_CHAN_WIDTH_10:
3248                 case NL80211_CHAN_WIDTH_20_NOHT:
3249                 case NL80211_CHAN_WIDTH_20:
3250                         break;
3251                 default:
3252                         return -EINVAL;
3253                 }
3254
3255                 /* changes into another band are not supported */
3256                 if (sdata->u.ibss.chandef.chan->band !=
3257                     params->chandef.chan->band)
3258                         return -EINVAL;
3259
3260                 /* see comments in the NL80211_IFTYPE_AP block */
3261                 if (params->count > 1) {
3262                         err = ieee80211_ibss_csa_beacon(sdata, params);
3263                         if (err < 0)
3264                                 return err;
3265                         *changed |= err;
3266                 }
3267
3268                 ieee80211_send_action_csa(sdata, params);
3269
3270                 break;
3271 #ifdef CONFIG_MAC80211_MESH
3272         case NL80211_IFTYPE_MESH_POINT: {
3273                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3274
3275                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3276                         return -EINVAL;
3277
3278                 /* changes into another band are not supported */
3279                 if (sdata->vif.bss_conf.chandef.chan->band !=
3280                     params->chandef.chan->band)
3281                         return -EINVAL;
3282
3283                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3284                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3285                         if (!ifmsh->pre_value)
3286                                 ifmsh->pre_value = 1;
3287                         else
3288                                 ifmsh->pre_value++;
3289                 }
3290
3291                 /* see comments in the NL80211_IFTYPE_AP block */
3292                 if (params->count > 1) {
3293                         err = ieee80211_mesh_csa_beacon(sdata, params);
3294                         if (err < 0) {
3295                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3296                                 return err;
3297                         }
3298                         *changed |= err;
3299                 }
3300
3301                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3302                         ieee80211_send_action_csa(sdata, params);
3303
3304                 break;
3305                 }
3306 #endif
3307         default:
3308                 return -EOPNOTSUPP;
3309         }
3310
3311         return 0;
3312 }
3313
3314 static int
3315 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3316                            struct cfg80211_csa_settings *params)
3317 {
3318         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3319         struct ieee80211_local *local = sdata->local;
3320         struct ieee80211_chanctx_conf *conf;
3321         struct ieee80211_chanctx *chanctx;
3322         int err, num_chanctx, changed = 0;
3323
3324         sdata_assert_lock(sdata);
3325         lockdep_assert_held(&local->mtx);
3326
3327         if (!list_empty(&local->roc_list) || local->scanning)
3328                 return -EBUSY;
3329
3330         if (sdata->wdev.cac_started)
3331                 return -EBUSY;
3332
3333         if (cfg80211_chandef_identical(&params->chandef,
3334                                        &sdata->vif.bss_conf.chandef))
3335                 return -EINVAL;
3336
3337         mutex_lock(&local->chanctx_mtx);
3338         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3339                                          lockdep_is_held(&local->chanctx_mtx));
3340         if (!conf) {
3341                 mutex_unlock(&local->chanctx_mtx);
3342                 return -EBUSY;
3343         }
3344
3345         /* don't handle for multi-VIF cases */
3346         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3347         if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
3348                 mutex_unlock(&local->chanctx_mtx);
3349                 return -EBUSY;
3350         }
3351         num_chanctx = 0;
3352         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3353                 num_chanctx++;
3354         mutex_unlock(&local->chanctx_mtx);
3355
3356         if (num_chanctx > 1)
3357                 return -EBUSY;
3358
3359         /* don't allow another channel switch if one is already active. */
3360         if (sdata->vif.csa_active)
3361                 return -EBUSY;
3362
3363         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3364         if (err)
3365                 return err;
3366
3367         sdata->csa_radar_required = params->radar_required;
3368         sdata->csa_chandef = params->chandef;
3369         sdata->csa_block_tx = params->block_tx;
3370         sdata->csa_current_counter = params->count;
3371         sdata->vif.csa_active = true;
3372
3373         if (sdata->csa_block_tx)
3374                 ieee80211_stop_queues_by_reason(&local->hw,
3375                                         IEEE80211_MAX_QUEUE_MAP,
3376                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3377
3378         if (changed) {
3379                 ieee80211_bss_info_change_notify(sdata, changed);
3380                 drv_channel_switch_beacon(sdata, &params->chandef);
3381         } else {
3382                 /* if the beacon didn't change, we can finalize immediately */
3383                 ieee80211_csa_finalize(sdata);
3384         }
3385
3386         return 0;
3387 }
3388
3389 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3390                              struct cfg80211_csa_settings *params)
3391 {
3392         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3393         struct ieee80211_local *local = sdata->local;
3394         int err;
3395
3396         mutex_lock(&local->mtx);
3397         err = __ieee80211_channel_switch(wiphy, dev, params);
3398         mutex_unlock(&local->mtx);
3399
3400         return err;
3401 }
3402
3403 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3404                              struct cfg80211_mgmt_tx_params *params,
3405                              u64 *cookie)
3406 {
3407         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3408         struct ieee80211_local *local = sdata->local;
3409         struct sk_buff *skb;
3410         struct sta_info *sta;
3411         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3412         bool need_offchan = false;
3413         u32 flags;
3414         int ret;
3415         u8 *data;
3416
3417         if (params->dont_wait_for_ack)
3418                 flags = IEEE80211_TX_CTL_NO_ACK;
3419         else
3420                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3421                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3422
3423         if (params->no_cck)
3424                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3425
3426         switch (sdata->vif.type) {
3427         case NL80211_IFTYPE_ADHOC:
3428                 if (!sdata->vif.bss_conf.ibss_joined)
3429                         need_offchan = true;
3430                 /* fall through */
3431 #ifdef CONFIG_MAC80211_MESH
3432         case NL80211_IFTYPE_MESH_POINT:
3433                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3434                     !sdata->u.mesh.mesh_id_len)
3435                         need_offchan = true;
3436                 /* fall through */
3437 #endif
3438         case NL80211_IFTYPE_AP:
3439         case NL80211_IFTYPE_AP_VLAN:
3440         case NL80211_IFTYPE_P2P_GO:
3441                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3442                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3443                     !rcu_access_pointer(sdata->bss->beacon))
3444                         need_offchan = true;
3445                 if (!ieee80211_is_action(mgmt->frame_control) ||
3446                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3447                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3448                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3449                         break;
3450                 rcu_read_lock();
3451                 sta = sta_info_get(sdata, mgmt->da);
3452                 rcu_read_unlock();
3453                 if (!sta)
3454                         return -ENOLINK;
3455                 break;
3456         case NL80211_IFTYPE_STATION:
3457         case NL80211_IFTYPE_P2P_CLIENT:
3458                 if (!sdata->u.mgd.associated)
3459                         need_offchan = true;
3460                 break;
3461         case NL80211_IFTYPE_P2P_DEVICE:
3462                 need_offchan = true;
3463                 break;
3464         default:
3465                 return -EOPNOTSUPP;
3466         }
3467
3468         /* configurations requiring offchan cannot work if no channel has been
3469          * specified
3470          */
3471         if (need_offchan && !params->chan)
3472                 return -EINVAL;
3473
3474         mutex_lock(&local->mtx);
3475
3476         /* Check if the operating channel is the requested channel */
3477         if (!need_offchan) {
3478                 struct ieee80211_chanctx_conf *chanctx_conf;
3479
3480                 rcu_read_lock();
3481                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3482
3483                 if (chanctx_conf) {
3484                         need_offchan = params->chan &&
3485                                        (params->chan !=
3486                                         chanctx_conf->def.chan);
3487                 } else if (!params->chan) {
3488                         ret = -EINVAL;
3489                         rcu_read_unlock();
3490                         goto out_unlock;
3491                 } else {
3492                         need_offchan = true;
3493                 }
3494                 rcu_read_unlock();
3495         }
3496
3497         if (need_offchan && !params->offchan) {
3498                 ret = -EBUSY;
3499                 goto out_unlock;
3500         }
3501
3502         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3503         if (!skb) {
3504                 ret = -ENOMEM;
3505                 goto out_unlock;
3506         }
3507         skb_reserve(skb, local->hw.extra_tx_headroom);
3508
3509         data = skb_put(skb, params->len);
3510         memcpy(data, params->buf, params->len);
3511
3512         /* Update CSA counters */
3513         if (sdata->vif.csa_active &&
3514             (sdata->vif.type == NL80211_IFTYPE_AP ||
3515              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3516             params->n_csa_offsets) {
3517                 int i;
3518                 u8 c = sdata->csa_current_counter;
3519
3520                 for (i = 0; i < params->n_csa_offsets; i++)
3521                         data[params->csa_offsets[i]] = c;
3522         }
3523
3524         IEEE80211_SKB_CB(skb)->flags = flags;
3525
3526         skb->dev = sdata->dev;
3527
3528         if (!need_offchan) {
3529                 *cookie = (unsigned long) skb;
3530                 ieee80211_tx_skb(sdata, skb);
3531                 ret = 0;
3532                 goto out_unlock;
3533         }
3534
3535         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3536                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3537         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3538                 IEEE80211_SKB_CB(skb)->hw_queue =
3539                         local->hw.offchannel_tx_hw_queue;
3540
3541         /* This will handle all kinds of coalescing and immediate TX */
3542         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3543                                        params->wait, cookie, skb,
3544                                        IEEE80211_ROC_TYPE_MGMT_TX);
3545         if (ret)
3546                 kfree_skb(skb);
3547  out_unlock:
3548         mutex_unlock(&local->mtx);
3549         return ret;
3550 }
3551
3552 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3553                                          struct wireless_dev *wdev,
3554                                          u64 cookie)
3555 {
3556         struct ieee80211_local *local = wiphy_priv(wiphy);
3557
3558         return ieee80211_cancel_roc(local, cookie, true);
3559 }
3560
3561 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3562                                           struct wireless_dev *wdev,
3563                                           u16 frame_type, bool reg)
3564 {
3565         struct ieee80211_local *local = wiphy_priv(wiphy);
3566
3567         switch (frame_type) {
3568         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3569                 if (reg)
3570                         local->probe_req_reg++;
3571                 else
3572                         local->probe_req_reg--;
3573
3574                 if (!local->open_count)
3575                         break;
3576
3577                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3578                 break;
3579         default:
3580                 break;
3581         }
3582 }
3583
3584 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3585 {
3586         struct ieee80211_local *local = wiphy_priv(wiphy);
3587
3588         if (local->started)
3589                 return -EOPNOTSUPP;
3590
3591         return drv_set_antenna(local, tx_ant, rx_ant);
3592 }
3593
3594 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3595 {
3596         struct ieee80211_local *local = wiphy_priv(wiphy);
3597
3598         return drv_get_antenna(local, tx_ant, rx_ant);
3599 }
3600
3601 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3602 {
3603         struct ieee80211_local *local = wiphy_priv(wiphy);
3604
3605         return drv_set_ringparam(local, tx, rx);
3606 }
3607
3608 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3609                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3610 {
3611         struct ieee80211_local *local = wiphy_priv(wiphy);
3612
3613         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3614 }
3615
3616 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3617                                     struct net_device *dev,
3618                                     struct cfg80211_gtk_rekey_data *data)
3619 {
3620         struct ieee80211_local *local = wiphy_priv(wiphy);
3621         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3622
3623         if (!local->ops->set_rekey_data)
3624                 return -EOPNOTSUPP;
3625
3626         drv_set_rekey_data(local, sdata, data);
3627
3628         return 0;
3629 }
3630
3631 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3632                                   const u8 *peer, u64 *cookie)
3633 {
3634         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3635         struct ieee80211_local *local = sdata->local;
3636         struct ieee80211_qos_hdr *nullfunc;
3637         struct sk_buff *skb;
3638         int size = sizeof(*nullfunc);
3639         __le16 fc;
3640         bool qos;
3641         struct ieee80211_tx_info *info;
3642         struct sta_info *sta;
3643         struct ieee80211_chanctx_conf *chanctx_conf;
3644         enum ieee80211_band band;
3645
3646         rcu_read_lock();
3647         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3648         if (WARN_ON(!chanctx_conf)) {
3649                 rcu_read_unlock();
3650                 return -EINVAL;
3651         }
3652         band = chanctx_conf->def.chan->band;
3653         sta = sta_info_get_bss(sdata, peer);
3654         if (sta) {
3655                 qos = test_sta_flag(sta, WLAN_STA_WME);
3656         } else {
3657                 rcu_read_unlock();
3658                 return -ENOLINK;
3659         }
3660
3661         if (qos) {
3662                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3663                                  IEEE80211_STYPE_QOS_NULLFUNC |
3664                                  IEEE80211_FCTL_FROMDS);
3665         } else {
3666                 size -= 2;
3667                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3668                                  IEEE80211_STYPE_NULLFUNC |
3669                                  IEEE80211_FCTL_FROMDS);
3670         }
3671
3672         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3673         if (!skb) {
3674                 rcu_read_unlock();
3675                 return -ENOMEM;
3676         }
3677
3678         skb->dev = dev;
3679
3680         skb_reserve(skb, local->hw.extra_tx_headroom);
3681
3682         nullfunc = (void *) skb_put(skb, size);
3683         nullfunc->frame_control = fc;
3684         nullfunc->duration_id = 0;
3685         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3686         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3687         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3688         nullfunc->seq_ctrl = 0;
3689
3690         info = IEEE80211_SKB_CB(skb);
3691
3692         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3693                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3694
3695         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3696         skb->priority = 7;
3697         if (qos)
3698                 nullfunc->qos_ctrl = cpu_to_le16(7);
3699
3700         local_bh_disable();
3701         ieee80211_xmit(sdata, skb, band);
3702         local_bh_enable();
3703         rcu_read_unlock();
3704
3705         *cookie = (unsigned long) skb;
3706         return 0;
3707 }
3708
3709 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3710                                      struct wireless_dev *wdev,
3711                                      struct cfg80211_chan_def *chandef)
3712 {
3713         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3714         struct ieee80211_local *local = wiphy_priv(wiphy);
3715         struct ieee80211_chanctx_conf *chanctx_conf;
3716         int ret = -ENODATA;
3717
3718         rcu_read_lock();
3719         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3720         if (chanctx_conf) {
3721                 *chandef = chanctx_conf->def;
3722                 ret = 0;
3723         } else if (local->open_count > 0 &&
3724                    local->open_count == local->monitors &&
3725                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3726                 if (local->use_chanctx)
3727                         *chandef = local->monitor_chandef;
3728                 else
3729                         *chandef = local->_oper_chandef;
3730                 ret = 0;
3731         }
3732         rcu_read_unlock();
3733
3734         return ret;
3735 }
3736
3737 #ifdef CONFIG_PM
3738 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3739 {
3740         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3741 }
3742 #endif
3743
3744 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3745                                  struct net_device *dev,
3746                                  struct cfg80211_qos_map *qos_map)
3747 {
3748         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3749         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3750
3751         if (qos_map) {
3752                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3753                 if (!new_qos_map)
3754                         return -ENOMEM;
3755                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3756         } else {
3757                 /* A NULL qos_map was passed to disable QoS mapping */
3758                 new_qos_map = NULL;
3759         }
3760
3761         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3762         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3763         if (old_qos_map)
3764                 kfree_rcu(old_qos_map, rcu_head);
3765
3766         return 0;
3767 }
3768
3769 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3770                                       struct net_device *dev,
3771                                       struct cfg80211_chan_def *chandef)
3772 {
3773         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3774         int ret;
3775         u32 changed = 0;
3776
3777         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3778         if (ret == 0)
3779                 ieee80211_bss_info_change_notify(sdata, changed);
3780
3781         return ret;
3782 }
3783
3784 const struct cfg80211_ops mac80211_config_ops = {
3785         .add_virtual_intf = ieee80211_add_iface,
3786         .del_virtual_intf = ieee80211_del_iface,
3787         .change_virtual_intf = ieee80211_change_iface,
3788         .start_p2p_device = ieee80211_start_p2p_device,
3789         .stop_p2p_device = ieee80211_stop_p2p_device,
3790         .add_key = ieee80211_add_key,
3791         .del_key = ieee80211_del_key,
3792         .get_key = ieee80211_get_key,
3793         .set_default_key = ieee80211_config_default_key,
3794         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3795         .start_ap = ieee80211_start_ap,
3796         .change_beacon = ieee80211_change_beacon,
3797         .stop_ap = ieee80211_stop_ap,
3798         .add_station = ieee80211_add_station,
3799         .del_station = ieee80211_del_station,
3800         .change_station = ieee80211_change_station,
3801         .get_station = ieee80211_get_station,
3802         .dump_station = ieee80211_dump_station,
3803         .dump_survey = ieee80211_dump_survey,
3804 #ifdef CONFIG_MAC80211_MESH
3805         .add_mpath = ieee80211_add_mpath,
3806         .del_mpath = ieee80211_del_mpath,
3807         .change_mpath = ieee80211_change_mpath,
3808         .get_mpath = ieee80211_get_mpath,
3809         .dump_mpath = ieee80211_dump_mpath,
3810         .update_mesh_config = ieee80211_update_mesh_config,
3811         .get_mesh_config = ieee80211_get_mesh_config,
3812         .join_mesh = ieee80211_join_mesh,
3813         .leave_mesh = ieee80211_leave_mesh,
3814 #endif
3815         .change_bss = ieee80211_change_bss,
3816         .set_txq_params = ieee80211_set_txq_params,
3817         .set_monitor_channel = ieee80211_set_monitor_channel,
3818         .suspend = ieee80211_suspend,
3819         .resume = ieee80211_resume,
3820         .scan = ieee80211_scan,
3821         .sched_scan_start = ieee80211_sched_scan_start,
3822         .sched_scan_stop = ieee80211_sched_scan_stop,
3823         .auth = ieee80211_auth,
3824         .assoc = ieee80211_assoc,
3825         .deauth = ieee80211_deauth,
3826         .disassoc = ieee80211_disassoc,
3827         .join_ibss = ieee80211_join_ibss,
3828         .leave_ibss = ieee80211_leave_ibss,
3829         .set_mcast_rate = ieee80211_set_mcast_rate,
3830         .set_wiphy_params = ieee80211_set_wiphy_params,
3831         .set_tx_power = ieee80211_set_tx_power,
3832         .get_tx_power = ieee80211_get_tx_power,
3833         .set_wds_peer = ieee80211_set_wds_peer,
3834         .rfkill_poll = ieee80211_rfkill_poll,
3835         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3836         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3837         .set_power_mgmt = ieee80211_set_power_mgmt,
3838         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3839         .remain_on_channel = ieee80211_remain_on_channel,
3840         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3841         .mgmt_tx = ieee80211_mgmt_tx,
3842         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3843         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3844         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3845         .set_antenna = ieee80211_set_antenna,
3846         .get_antenna = ieee80211_get_antenna,
3847         .set_ringparam = ieee80211_set_ringparam,
3848         .get_ringparam = ieee80211_get_ringparam,
3849         .set_rekey_data = ieee80211_set_rekey_data,
3850         .tdls_oper = ieee80211_tdls_oper,
3851         .tdls_mgmt = ieee80211_tdls_mgmt,
3852         .probe_client = ieee80211_probe_client,
3853         .set_noack_map = ieee80211_set_noack_map,
3854 #ifdef CONFIG_PM
3855         .set_wakeup = ieee80211_set_wakeup,
3856 #endif
3857         .get_et_sset_count = ieee80211_get_et_sset_count,
3858         .get_et_stats = ieee80211_get_et_stats,
3859         .get_et_strings = ieee80211_get_et_strings,
3860         .get_channel = ieee80211_cfg_get_channel,
3861         .start_radar_detection = ieee80211_start_radar_detection,
3862         .channel_switch = ieee80211_channel_switch,
3863         .set_qos_map = ieee80211_set_qos_map,
3864         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3865 };