net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr_flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0)
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71         else if (type == NL80211_IFTYPE_STATION &&
  72                  params && params->use_4addr >= 0)
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74
  75         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  76                 struct ieee80211_local *local = sdata->local;
  77
  78                 if (ieee80211_sdata_running(sdata)) {
  79                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  80                                    MONITOR_FLAG_ACTIVE;
  81
  82                         /*
  83                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  84                          * MONITOR_FLAG_ACTIVE to be changed while the
  85                          * interface is up.
  86                          * Else we would need to add a lot of cruft
  87                          * to update everything:
  88                          *      cooked_mntrs, monitor and all fif_* counters
  89                          *      reconfigure hardware
  90                          */
  91                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  92                                 return -EBUSY;
  93
  94                         ieee80211_adjust_monitor_flags(sdata, -1);
  95                         sdata->u.mntr_flags = *flags;
  96                         ieee80211_adjust_monitor_flags(sdata, 1);
  97
  98                         ieee80211_configure_filter(local);
  99                 } else {
 100                         /*
 101                          * Because the interface is down, ieee80211_do_stop
 102                          * and ieee80211_do_open take care of "everything"
 103                          * mentioned in the comment above.
 104                          */
 105                         sdata->u.mntr_flags = *flags;
 106                 }
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 116         int ret;
 117
 118         mutex_lock(&sdata->local->chanctx_mtx);
 119         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 120         mutex_unlock(&sdata->local->chanctx_mtx);
 121         if (ret < 0)
 122                 return ret;
 123
 124         return ieee80211_do_open(wdev, true);
 125 }
 126
 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 128                                       struct wireless_dev *wdev)
 129 {
 130         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 131 }
 132
 133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 134                                   struct net_device *dev,
 135                                   u16 noack_map)
 136 {
 137         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 138
 139         sdata->noack_map = noack_map;
 140
 141         ieee80211_check_fast_xmit_iface(sdata);
 142
 143         return 0;
 144 }
 145
 146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 147                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 148                              struct key_params *params)
 149 {
 150         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 151         struct ieee80211_local *local = sdata->local;
 152         struct sta_info *sta = NULL;
 153         const struct ieee80211_cipher_scheme *cs = NULL;
 154         struct ieee80211_key *key;
 155         int err;
 156
 157         if (!ieee80211_sdata_running(sdata))
 158                 return -ENETDOWN;
 159
 160         /* reject WEP and TKIP keys if WEP failed to initialize */
 161         switch (params->cipher) {
 162         case WLAN_CIPHER_SUITE_WEP40:
 163         case WLAN_CIPHER_SUITE_TKIP:
 164         case WLAN_CIPHER_SUITE_WEP104:
 165                 if (IS_ERR(local->wep_tx_tfm))
 166                         return -EINVAL;
 167                 break;
 168         case WLAN_CIPHER_SUITE_CCMP:
 169         case WLAN_CIPHER_SUITE_CCMP_256:
 170         case WLAN_CIPHER_SUITE_AES_CMAC:
 171         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 172         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 173         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 174         case WLAN_CIPHER_SUITE_GCMP:
 175         case WLAN_CIPHER_SUITE_GCMP_256:
 176                 break;
 177         default:
 178                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 179                 break;
 180         }
 181
 182         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 183                                   params->key, params->seq_len, params->seq,
 184                                   cs);
 185         if (IS_ERR(key))
 186                 return PTR_ERR(key);
 187
 188         if (pairwise)
 189                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 190
 191         mutex_lock(&local->sta_mtx);
 192
 193         if (mac_addr) {
 194                 if (ieee80211_vif_is_mesh(&sdata->vif))
 195                         sta = sta_info_get(sdata, mac_addr);
 196                 else
 197                         sta = sta_info_get_bss(sdata, mac_addr);
 198                 /*
 199                  * The ASSOC test makes sure the driver is ready to
 200                  * receive the key. When wpa_supplicant has roamed
 201                  * using FT, it attempts to set the key before
 202                  * association has completed, this rejects that attempt
 203                  * so it will set the key again after association.
 204                  *
 205                  * TODO: accept the key if we have a station entry and
 206                  *       add it to the device after the station.
 207                  */
 208                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 209                         ieee80211_key_free_unused(key);
 210                         err = -ENOENT;
 211                         goto out_unlock;
 212                 }
 213         }
 214
 215         switch (sdata->vif.type) {
 216         case NL80211_IFTYPE_STATION:
 217                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 218                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 219                 break;
 220         case NL80211_IFTYPE_AP:
 221         case NL80211_IFTYPE_AP_VLAN:
 222                 /* Keys without a station are used for TX only */
 223                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 224                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 225                 break;
 226         case NL80211_IFTYPE_ADHOC:
 227                 /* no MFP (yet) */
 228                 break;
 229         case NL80211_IFTYPE_MESH_POINT:
 230 #ifdef CONFIG_MAC80211_MESH
 231                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 232                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 233                 break;
 234 #endif
 235         case NL80211_IFTYPE_WDS:
 236         case NL80211_IFTYPE_MONITOR:
 237         case NL80211_IFTYPE_P2P_DEVICE:
 238         case NL80211_IFTYPE_UNSPECIFIED:
 239         case NUM_NL80211_IFTYPES:
 240         case NL80211_IFTYPE_P2P_CLIENT:
 241         case NL80211_IFTYPE_P2P_GO:
 242         case NL80211_IFTYPE_OCB:
 243                 /* shouldn't happen */
 244                 WARN_ON_ONCE(1);
 245                 break;
 246         }
 247
 248         if (sta)
 249                 sta->cipher_scheme = cs;
 250
 251         err = ieee80211_key_link(key, sdata, sta);
 252
 253  out_unlock:
 254         mutex_unlock(&local->sta_mtx);
 255
 256         return err;
 257 }
 258
 259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 260                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 261 {
 262         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 263         struct ieee80211_local *local = sdata->local;
 264         struct sta_info *sta;
 265         struct ieee80211_key *key = NULL;
 266         int ret;
 267
 268         mutex_lock(&local->sta_mtx);
 269         mutex_lock(&local->key_mtx);
 270
 271         if (mac_addr) {
 272                 ret = -ENOENT;
 273
 274                 sta = sta_info_get_bss(sdata, mac_addr);
 275                 if (!sta)
 276                         goto out_unlock;
 277
 278                 if (pairwise)
 279                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 280                 else
 281                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 282         } else
 283                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 284
 285         if (!key) {
 286                 ret = -ENOENT;
 287                 goto out_unlock;
 288         }
 289
 290         ieee80211_key_free(key, true);
 291
 292         ret = 0;
 293  out_unlock:
 294         mutex_unlock(&local->key_mtx);
 295         mutex_unlock(&local->sta_mtx);
 296
 297         return ret;
 298 }
 299
 300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 301                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 302                              void *cookie,
 303                              void (*callback)(void *cookie,
 304                                               struct key_params *params))
 305 {
 306         struct ieee80211_sub_if_data *sdata;
 307         struct sta_info *sta = NULL;
 308         u8 seq[6] = {0};
 309         struct key_params params;
 310         struct ieee80211_key *key = NULL;
 311         u64 pn64;
 312         u32 iv32;
 313         u16 iv16;
 314         int err = -ENOENT;
 315         struct ieee80211_key_seq kseq = {};
 316
 317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 318
 319         rcu_read_lock();
 320
 321         if (mac_addr) {
 322                 sta = sta_info_get_bss(sdata, mac_addr);
 323                 if (!sta)
 324                         goto out;
 325
 326                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 327                         key = rcu_dereference(sta->ptk[key_idx]);
 328                 else if (!pairwise &&
 329                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 330                         key = rcu_dereference(sta->gtk[key_idx]);
 331         } else
 332                 key = rcu_dereference(sdata->keys[key_idx]);
 333
 334         if (!key)
 335                 goto out;
 336
 337         memset(&params, 0, sizeof(params));
 338
 339         params.cipher = key->conf.cipher;
 340
 341         switch (key->conf.cipher) {
 342         case WLAN_CIPHER_SUITE_TKIP:
 343                 iv32 = key->u.tkip.tx.iv32;
 344                 iv16 = key->u.tkip.tx.iv16;
 345
 346                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 347                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 348                         drv_get_key_seq(sdata->local, key, &kseq);
 349                         iv32 = kseq.tkip.iv32;
 350                         iv16 = kseq.tkip.iv16;
 351                 }
 352
 353                 seq[0] = iv16 & 0xff;
 354                 seq[1] = (iv16 >> 8) & 0xff;
 355                 seq[2] = iv32 & 0xff;
 356                 seq[3] = (iv32 >> 8) & 0xff;
 357                 seq[4] = (iv32 >> 16) & 0xff;
 358                 seq[5] = (iv32 >> 24) & 0xff;
 359                 params.seq = seq;
 360                 params.seq_len = 6;
 361                 break;
 362         case WLAN_CIPHER_SUITE_CCMP:
 363         case WLAN_CIPHER_SUITE_CCMP_256:
 364         case WLAN_CIPHER_SUITE_AES_CMAC:
 365         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 366                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 367                              offsetof(typeof(kseq), aes_cmac));
 368         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 369         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 370                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 371                              offsetof(typeof(kseq), aes_gmac));
 372         case WLAN_CIPHER_SUITE_GCMP:
 373         case WLAN_CIPHER_SUITE_GCMP_256:
 374                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 375                              offsetof(typeof(kseq), gcmp));
 376
 377                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 378                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 379                         drv_get_key_seq(sdata->local, key, &kseq);
 380                         memcpy(seq, kseq.ccmp.pn, 6);
 381                 } else {
 382                         pn64 = atomic64_read(&key->conf.tx_pn);
 383                         seq[0] = pn64;
 384                         seq[1] = pn64 >> 8;
 385                         seq[2] = pn64 >> 16;
 386                         seq[3] = pn64 >> 24;
 387                         seq[4] = pn64 >> 32;
 388                         seq[5] = pn64 >> 40;
 389                 }
 390                 params.seq = seq;
 391                 params.seq_len = 6;
 392                 break;
 393         default:
 394                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 395                         break;
 396                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 397                         break;
 398                 drv_get_key_seq(sdata->local, key, &kseq);
 399                 params.seq = kseq.hw.seq;
 400                 params.seq_len = kseq.hw.seq_len;
 401                 break;
 402         }
 403
 404         params.key = key->conf.key;
 405         params.key_len = key->conf.keylen;
 406
 407         callback(cookie, &params);
 408         err = 0;
 409
 410  out:
 411         rcu_read_unlock();
 412         return err;
 413 }
 414
 415 static int ieee80211_config_default_key(struct wiphy *wiphy,
 416                                         struct net_device *dev,
 417                                         u8 key_idx, bool uni,
 418                                         bool multi)
 419 {
 420         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 421
 422         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 423
 424         return 0;
 425 }
 426
 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 428                                              struct net_device *dev,
 429                                              u8 key_idx)
 430 {
 431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 432
 433         ieee80211_set_default_mgmt_key(sdata, key_idx);
 434
 435         return 0;
 436 }
 437
 438 void sta_set_rate_info_tx(struct sta_info *sta,
 439                           const struct ieee80211_tx_rate *rate,
 440                           struct rate_info *rinfo)
 441 {
 442         rinfo->flags = 0;
 443         if (rate->flags & IEEE80211_TX_RC_MCS) {
 444                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 445                 rinfo->mcs = rate->idx;
 446         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 447                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 448                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 449                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 450         } else {
 451                 struct ieee80211_supported_band *sband;
 452                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 453                 u16 brate;
 454
 455                 sband = sta->local->hw.wiphy->bands[
 456                                 ieee80211_get_sdata_band(sta->sdata)];
 457                 brate = sband->bitrates[rate->idx].bitrate;
 458                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 459         }
 460         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 461                 rinfo->bw = RATE_INFO_BW_40;
 462         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_80;
 464         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_160;
 466         else
 467                 rinfo->bw = RATE_INFO_BW_20;
 468         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 469                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 470 }
 471
 472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 473 {
 474         rinfo->flags = 0;
 475
 476         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 477                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 478                 rinfo->mcs = sta->last_rx_rate_idx;
 479         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 480                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 481                 rinfo->nss = sta->last_rx_rate_vht_nss;
 482                 rinfo->mcs = sta->last_rx_rate_idx;
 483         } else {
 484                 struct ieee80211_supported_band *sband;
 485                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 486                 u16 brate;
 487
 488                 sband = sta->local->hw.wiphy->bands[
 489                                 ieee80211_get_sdata_band(sta->sdata)];
 490                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 491                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 492         }
 493
 494         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 495                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 496
 497         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 498                 rinfo->bw = RATE_INFO_BW_5;
 499         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 500                 rinfo->bw = RATE_INFO_BW_10;
 501         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 502                 rinfo->bw = RATE_INFO_BW_40;
 503         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 504                 rinfo->bw = RATE_INFO_BW_80;
 505         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 506                 rinfo->bw = RATE_INFO_BW_160;
 507         else
 508                 rinfo->bw = RATE_INFO_BW_20;
 509 }
 510
 511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 512                                   int idx, u8 *mac, struct station_info *sinfo)
 513 {
 514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 515         struct ieee80211_local *local = sdata->local;
 516         struct sta_info *sta;
 517         int ret = -ENOENT;
 518
 519         mutex_lock(&local->sta_mtx);
 520
 521         sta = sta_info_get_by_idx(sdata, idx);
 522         if (sta) {
 523                 ret = 0;
 524                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 525                 sta_set_sinfo(sta, sinfo);
 526         }
 527
 528         mutex_unlock(&local->sta_mtx);
 529
 530         return ret;
 531 }
 532
 533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 534                                  int idx, struct survey_info *survey)
 535 {
 536         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 537
 538         return drv_get_survey(local, idx, survey);
 539 }
 540
 541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 542                                  const u8 *mac, struct station_info *sinfo)
 543 {
 544         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 545         struct ieee80211_local *local = sdata->local;
 546         struct sta_info *sta;
 547         int ret = -ENOENT;
 548
 549         mutex_lock(&local->sta_mtx);
 550
 551         sta = sta_info_get_bss(sdata, mac);
 552         if (sta) {
 553                 ret = 0;
 554                 sta_set_sinfo(sta, sinfo);
 555         }
 556
 557         mutex_unlock(&local->sta_mtx);
 558
 559         return ret;
 560 }
 561
 562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 563                                          struct cfg80211_chan_def *chandef)
 564 {
 565         struct ieee80211_local *local = wiphy_priv(wiphy);
 566         struct ieee80211_sub_if_data *sdata;
 567         int ret = 0;
 568
 569         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 570                 return 0;
 571
 572         mutex_lock(&local->mtx);
 573         mutex_lock(&local->iflist_mtx);
 574         if (local->use_chanctx) {
 575                 sdata = rcu_dereference_protected(
 576                                 local->monitor_sdata,
 577                                 lockdep_is_held(&local->iflist_mtx));
 578                 if (sdata) {
 579                         ieee80211_vif_release_channel(sdata);
 580                         ret = ieee80211_vif_use_channel(sdata, chandef,
 581                                         IEEE80211_CHANCTX_EXCLUSIVE);
 582                 }
 583         } else if (local->open_count == local->monitors) {
 584                 local->_oper_chandef = *chandef;
 585                 ieee80211_hw_config(local, 0);
 586         }
 587
 588         if (ret == 0)
 589                 local->monitor_chandef = *chandef;
 590         mutex_unlock(&local->iflist_mtx);
 591         mutex_unlock(&local->mtx);
 592
 593         return ret;
 594 }
 595
 596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 597                                     const u8 *resp, size_t resp_len,
 598                                     const struct ieee80211_csa_settings *csa)
 599 {
 600         struct probe_resp *new, *old;
 601
 602         if (!resp || !resp_len)
 603                 return 1;
 604
 605         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 606
 607         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 608         if (!new)
 609                 return -ENOMEM;
 610
 611         new->len = resp_len;
 612         memcpy(new->data, resp, resp_len);
 613
 614         if (csa)
 615                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 616                        csa->n_counter_offsets_presp *
 617                        sizeof(new->csa_counter_offsets[0]));
 618
 619         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 620         if (old)
 621                 kfree_rcu(old, rcu_head);
 622
 623         return 0;
 624 }
 625
 626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 627                                    struct cfg80211_beacon_data *params,
 628                                    const struct ieee80211_csa_settings *csa)
 629 {
 630         struct beacon_data *new, *old;
 631         int new_head_len, new_tail_len;
 632         int size, err;
 633         u32 changed = BSS_CHANGED_BEACON;
 634
 635         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 636
 637
 638         /* Need to have a beacon head if we don't have one yet */
 639         if (!params->head && !old)
 640                 return -EINVAL;
 641
 642         /* new or old head? */
 643         if (params->head)
 644                 new_head_len = params->head_len;
 645         else
 646                 new_head_len = old->head_len;
 647
 648         /* new or old tail? */
 649         if (params->tail || !old)
 650                 /* params->tail_len will be zero for !params->tail */
 651                 new_tail_len = params->tail_len;
 652         else
 653                 new_tail_len = old->tail_len;
 654
 655         size = sizeof(*new) + new_head_len + new_tail_len;
 656
 657         new = kzalloc(size, GFP_KERNEL);
 658         if (!new)
 659                 return -ENOMEM;
 660
 661         /* start filling the new info now */
 662
 663         /*
 664          * pointers go into the block we allocated,
 665          * memory is | beacon_data | head | tail |
 666          */
 667         new->head = ((u8 *) new) + sizeof(*new);
 668         new->tail = new->head + new_head_len;
 669         new->head_len = new_head_len;
 670         new->tail_len = new_tail_len;
 671
 672         if (csa) {
 673                 new->csa_current_counter = csa->count;
 674                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 675                        csa->n_counter_offsets_beacon *
 676                        sizeof(new->csa_counter_offsets[0]));
 677         }
 678
 679         /* copy in head */
 680         if (params->head)
 681                 memcpy(new->head, params->head, new_head_len);
 682         else
 683                 memcpy(new->head, old->head, new_head_len);
 684
 685         /* copy in optional tail */
 686         if (params->tail)
 687                 memcpy(new->tail, params->tail, new_tail_len);
 688         else
 689                 if (old)
 690                         memcpy(new->tail, old->tail, new_tail_len);
 691
 692         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 693                                        params->probe_resp_len, csa);
 694         if (err < 0)
 695                 return err;
 696         if (err == 0)
 697                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 698
 699         rcu_assign_pointer(sdata->u.ap.beacon, new);
 700
 701         if (old)
 702                 kfree_rcu(old, rcu_head);
 703
 704         return changed;
 705 }
 706
 707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 708                               struct cfg80211_ap_settings *params)
 709 {
 710         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 711         struct ieee80211_local *local = sdata->local;
 712         struct beacon_data *old;
 713         struct ieee80211_sub_if_data *vlan;
 714         u32 changed = BSS_CHANGED_BEACON_INT |
 715                       BSS_CHANGED_BEACON_ENABLED |
 716                       BSS_CHANGED_BEACON |
 717                       BSS_CHANGED_SSID |
 718                       BSS_CHANGED_P2P_PS |
 719                       BSS_CHANGED_TXPOWER;
 720         int err;
 721
 722         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 723         if (old)
 724                 return -EALREADY;
 725
 726         switch (params->smps_mode) {
 727         case NL80211_SMPS_OFF:
 728                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 729                 break;
 730         case NL80211_SMPS_STATIC:
 731                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 732                 break;
 733         case NL80211_SMPS_DYNAMIC:
 734                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 735                 break;
 736         default:
 737                 return -EINVAL;
 738         }
 739         sdata->needed_rx_chains = sdata->local->rx_chains;
 740
 741         mutex_lock(&local->mtx);
 742         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 743                                         IEEE80211_CHANCTX_SHARED);
 744         if (!err)
 745                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 746         mutex_unlock(&local->mtx);
 747         if (err)
 748                 return err;
 749
 750         /*
 751          * Apply control port protocol, this allows us to
 752          * not encrypt dynamic WEP control frames.
 753          */
 754         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 755         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 756         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 757                                                         &params->crypto,
 758                                                         sdata->vif.type);
 759
 760         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 761                 vlan->control_port_protocol =
 762                         params->crypto.control_port_ethertype;
 763                 vlan->control_port_no_encrypt =
 764                         params->crypto.control_port_no_encrypt;
 765                 vlan->encrypt_headroom =
 766                         ieee80211_cs_headroom(sdata->local,
 767                                               &params->crypto,
 768                                               vlan->vif.type);
 769         }
 770
 771         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 772         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 773         sdata->vif.bss_conf.enable_beacon = true;
 774
 775         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 776         if (params->ssid_len)
 777                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 778                        params->ssid_len);
 779         sdata->vif.bss_conf.hidden_ssid =
 780                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 781
 782         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 783                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 784         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 785                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 786         if (params->p2p_opp_ps)
 787                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 788                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 789
 790         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 791         if (err < 0) {
 792                 ieee80211_vif_release_channel(sdata);
 793                 return err;
 794         }
 795         changed |= err;
 796
 797         err = drv_start_ap(sdata->local, sdata);
 798         if (err) {
 799                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 800
 801                 if (old)
 802                         kfree_rcu(old, rcu_head);
 803                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 804                 ieee80211_vif_release_channel(sdata);
 805                 return err;
 806         }
 807
 808         ieee80211_recalc_dtim(local, sdata);
 809         ieee80211_bss_info_change_notify(sdata, changed);
 810
 811         netif_carrier_on(dev);
 812         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 813                 netif_carrier_on(vlan->dev);
 814
 815         return 0;
 816 }
 817
 818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 819                                    struct cfg80211_beacon_data *params)
 820 {
 821         struct ieee80211_sub_if_data *sdata;
 822         struct beacon_data *old;
 823         int err;
 824
 825         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 826         sdata_assert_lock(sdata);
 827
 828         /* don't allow changing the beacon while CSA is in place - offset
 829          * of channel switch counter may change
 830          */
 831         if (sdata->vif.csa_active)
 832                 return -EBUSY;
 833
 834         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 835         if (!old)
 836                 return -ENOENT;
 837
 838         err = ieee80211_assign_beacon(sdata, params, NULL);
 839         if (err < 0)
 840                 return err;
 841         ieee80211_bss_info_change_notify(sdata, err);
 842         return 0;
 843 }
 844
 845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 846 {
 847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 848         struct ieee80211_sub_if_data *vlan;
 849         struct ieee80211_local *local = sdata->local;
 850         struct beacon_data *old_beacon;
 851         struct probe_resp *old_probe_resp;
 852         struct cfg80211_chan_def chandef;
 853
 854         sdata_assert_lock(sdata);
 855
 856         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 857         if (!old_beacon)
 858                 return -ENOENT;
 859         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 860
 861         /* abort any running channel switch */
 862         mutex_lock(&local->mtx);
 863         sdata->vif.csa_active = false;
 864         if (sdata->csa_block_tx) {
 865                 ieee80211_wake_vif_queues(local, sdata,
 866                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 867                 sdata->csa_block_tx = false;
 868         }
 869
 870         mutex_unlock(&local->mtx);
 871
 872         kfree(sdata->u.ap.next_beacon);
 873         sdata->u.ap.next_beacon = NULL;
 874
 875         /* turn off carrier for this interface and dependent VLANs */
 876         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 877                 netif_carrier_off(vlan->dev);
 878         netif_carrier_off(dev);
 879
 880         /* remove beacon and probe response */
 881         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 882         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 883         kfree_rcu(old_beacon, rcu_head);
 884         if (old_probe_resp)
 885                 kfree_rcu(old_probe_resp, rcu_head);
 886         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 887
 888         __sta_info_flush(sdata, true);
 889         ieee80211_free_keys(sdata, true);
 890
 891         sdata->vif.bss_conf.enable_beacon = false;
 892         sdata->vif.bss_conf.ssid_len = 0;
 893         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 894         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 895
 896         if (sdata->wdev.cac_started) {
 897                 chandef = sdata->vif.bss_conf.chandef;
 898                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 899                 cfg80211_cac_event(sdata->dev, &chandef,
 900                                    NL80211_RADAR_CAC_ABORTED,
 901                                    GFP_KERNEL);
 902         }
 903
 904         drv_stop_ap(sdata->local, sdata);
 905
 906         /* free all potentially still buffered bcast frames */
 907         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 908         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 909
 910         mutex_lock(&local->mtx);
 911         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 912         ieee80211_vif_release_channel(sdata);
 913         mutex_unlock(&local->mtx);
 914
 915         return 0;
 916 }
 917
 918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 919 struct iapp_layer2_update {
 920         u8 da[ETH_ALEN];        /* broadcast */
 921         u8 sa[ETH_ALEN];        /* STA addr */
 922         __be16 len;             /* 6 */
 923         u8 dsap;                /* 0 */
 924         u8 ssap;                /* 0 */
 925         u8 control;
 926         u8 xid_info[3];
 927 } __packed;
 928
 929 static void ieee80211_send_layer2_update(struct sta_info *sta)
 930 {
 931         struct iapp_layer2_update *msg;
 932         struct sk_buff *skb;
 933
 934         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 935          * bridge devices */
 936
 937         skb = dev_alloc_skb(sizeof(*msg));
 938         if (!skb)
 939                 return;
 940         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 941
 942         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 943          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 944
 945         eth_broadcast_addr(msg->da);
 946         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 947         msg->len = htons(6);
 948         msg->dsap = 0;
 949         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 950         msg->control = 0xaf;    /* XID response lsb.1111F101.
 951                                  * F=0 (no poll command; unsolicited frame) */
 952         msg->xid_info[0] = 0x81;        /* XID format identifier */
 953         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 954         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 955
 956         skb->dev = sta->sdata->dev;
 957         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 958         memset(skb->cb, 0, sizeof(skb->cb));
 959         netif_rx_ni(skb);
 960 }
 961
 962 static int sta_apply_auth_flags(struct ieee80211_local *local,
 963                                 struct sta_info *sta,
 964                                 u32 mask, u32 set)
 965 {
 966         int ret;
 967
 968         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 969             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 970             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 971                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 972                 if (ret)
 973                         return ret;
 974         }
 975
 976         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 977             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 978             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 979                 /*
 980                  * When peer becomes associated, init rate control as
 981                  * well. Some drivers require rate control initialized
 982                  * before drv_sta_state() is called.
 983                  */
 984                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 985                         rate_control_rate_init(sta);
 986
 987                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 988                 if (ret)
 989                         return ret;
 990         }
 991
 992         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 993                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 994                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 995                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 996                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 997                 else
 998                         ret = 0;
 999                 if (ret)
1000                         return ret;
1001         }
1002
1003         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1004             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1005             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1006                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1007                 if (ret)
1008                         return ret;
1009         }
1010
1011         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1012             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1013             test_sta_flag(sta, WLAN_STA_AUTH)) {
1014                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1015                 if (ret)
1016                         return ret;
1017         }
1018
1019         return 0;
1020 }
1021
1022 static int sta_apply_parameters(struct ieee80211_local *local,
1023                                 struct sta_info *sta,
1024                                 struct station_parameters *params)
1025 {
1026         int ret = 0;
1027         struct ieee80211_supported_band *sband;
1028         struct ieee80211_sub_if_data *sdata = sta->sdata;
1029         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1030         u32 mask, set;
1031
1032         sband = local->hw.wiphy->bands[band];
1033
1034         mask = params->sta_flags_mask;
1035         set = params->sta_flags_set;
1036
1037         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1038                 /*
1039                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1040                  * API but must follow AUTHENTICATED for driver state.
1041                  */
1042                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1043                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1044                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1045                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1046         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1047                 /*
1048                  * TDLS -- everything follows authorized, but
1049                  * only becoming authorized is possible, not
1050                  * going back
1051                  */
1052                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1053                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1054                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1055                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1056                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1057                 }
1058         }
1059
1060         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1061             local->hw.queues >= IEEE80211_NUM_ACS)
1062                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1063
1064         /* auth flags will be set later for TDLS stations */
1065         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066                 ret = sta_apply_auth_flags(local, sta, mask, set);
1067                 if (ret)
1068                         return ret;
1069         }
1070
1071         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1072                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1073                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1074                 else
1075                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1076         }
1077
1078         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1079                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1080                 if (set & BIT(NL80211_STA_FLAG_MFP))
1081                         set_sta_flag(sta, WLAN_STA_MFP);
1082                 else
1083                         clear_sta_flag(sta, WLAN_STA_MFP);
1084         }
1085
1086         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1087                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1088                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1089                 else
1090                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1091         }
1092
1093         /* mark TDLS channel switch support, if the AP allows it */
1094         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1095             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1096             params->ext_capab_len >= 4 &&
1097             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1098                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1099
1100         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1101                 sta->sta.uapsd_queues = params->uapsd_queues;
1102                 sta->sta.max_sp = params->max_sp;
1103         }
1104
1105         /*
1106          * cfg80211 validates this (1-2007) and allows setting the AID
1107          * only when creating a new station entry
1108          */
1109         if (params->aid)
1110                 sta->sta.aid = params->aid;
1111
1112         /*
1113          * Some of the following updates would be racy if called on an
1114          * existing station, via ieee80211_change_station(). However,
1115          * all such changes are rejected by cfg80211 except for updates
1116          * changing the supported rates on an existing but not yet used
1117          * TDLS peer.
1118          */
1119
1120         if (params->listen_interval >= 0)
1121                 sta->listen_interval = params->listen_interval;
1122
1123         if (params->supported_rates) {
1124                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1125                                          sband, params->supported_rates,
1126                                          params->supported_rates_len,
1127                                          &sta->sta.supp_rates[band]);
1128         }
1129
1130         if (params->ht_capa)
1131                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1132                                                   params->ht_capa, sta);
1133
1134         if (params->vht_capa)
1135                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1136                                                     params->vht_capa, sta);
1137
1138         if (params->opmode_notif_used) {
1139                 /* returned value is only needed for rc update, but the
1140                  * rc isn't initialized here yet, so ignore it
1141                  */
1142                 __ieee80211_vht_handle_opmode(sdata, sta,
1143                                               params->opmode_notif,
1144                                               band, false);
1145         }
1146
1147         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1148 #ifdef CONFIG_MAC80211_MESH
1149                 u32 changed = 0;
1150
1151                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1152                         switch (params->plink_state) {
1153                         case NL80211_PLINK_ESTAB:
1154                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1155                                         changed = mesh_plink_inc_estab_count(
1156                                                         sdata);
1157                                 sta->plink_state = params->plink_state;
1158
1159                                 ieee80211_mps_sta_status_update(sta);
1160                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1161                                               sdata->u.mesh.mshcfg.power_mode);
1162                                 break;
1163                         case NL80211_PLINK_LISTEN:
1164                         case NL80211_PLINK_BLOCKED:
1165                         case NL80211_PLINK_OPN_SNT:
1166                         case NL80211_PLINK_OPN_RCVD:
1167                         case NL80211_PLINK_CNF_RCVD:
1168                         case NL80211_PLINK_HOLDING:
1169                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1170                                         changed = mesh_plink_dec_estab_count(
1171                                                         sdata);
1172                                 sta->plink_state = params->plink_state;
1173
1174                                 ieee80211_mps_sta_status_update(sta);
1175                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1176                                                 NL80211_MESH_POWER_UNKNOWN);
1177                                 break;
1178                         default:
1179                                 /*  nothing  */
1180                                 break;
1181                         }
1182                 }
1183
1184                 switch (params->plink_action) {
1185                 case NL80211_PLINK_ACTION_NO_ACTION:
1186                         /* nothing */
1187                         break;
1188                 case NL80211_PLINK_ACTION_OPEN:
1189                         changed |= mesh_plink_open(sta);
1190                         break;
1191                 case NL80211_PLINK_ACTION_BLOCK:
1192                         changed |= mesh_plink_block(sta);
1193                         break;
1194                 }
1195
1196                 if (params->local_pm)
1197                         changed |=
1198                               ieee80211_mps_set_sta_local_pm(sta,
1199                                                              params->local_pm);
1200                 ieee80211_mbss_info_change_notify(sdata, changed);
1201 #endif
1202         }
1203
1204         /* set the STA state after all sta info from usermode has been set */
1205         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1206                 ret = sta_apply_auth_flags(local, sta, mask, set);
1207                 if (ret)
1208                         return ret;
1209         }
1210
1211         return 0;
1212 }
1213
1214 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1215                                  const u8 *mac,
1216                                  struct station_parameters *params)
1217 {
1218         struct ieee80211_local *local = wiphy_priv(wiphy);
1219         struct sta_info *sta;
1220         struct ieee80211_sub_if_data *sdata;
1221         int err;
1222         int layer2_update;
1223
1224         if (params->vlan) {
1225                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1226
1227                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1228                     sdata->vif.type != NL80211_IFTYPE_AP)
1229                         return -EINVAL;
1230         } else
1231                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1232
1233         if (ether_addr_equal(mac, sdata->vif.addr))
1234                 return -EINVAL;
1235
1236         if (is_multicast_ether_addr(mac))
1237                 return -EINVAL;
1238
1239         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1240         if (!sta)
1241                 return -ENOMEM;
1242
1243         /*
1244          * defaults -- if userspace wants something else we'll
1245          * change it accordingly in sta_apply_parameters()
1246          */
1247         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1248                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1249                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1250         } else {
1251                 sta->sta.tdls = true;
1252         }
1253
1254         err = sta_apply_parameters(local, sta, params);
1255         if (err) {
1256                 sta_info_free(local, sta);
1257                 return err;
1258         }
1259
1260         /*
1261          * for TDLS, rate control should be initialized only when
1262          * rates are known and station is marked authorized
1263          */
1264         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1265                 rate_control_rate_init(sta);
1266
1267         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1268                 sdata->vif.type == NL80211_IFTYPE_AP;
1269
1270         err = sta_info_insert_rcu(sta);
1271         if (err) {
1272                 rcu_read_unlock();
1273                 return err;
1274         }
1275
1276         if (layer2_update)
1277                 ieee80211_send_layer2_update(sta);
1278
1279         rcu_read_unlock();
1280
1281         return 0;
1282 }
1283
1284 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1285                                  struct station_del_parameters *params)
1286 {
1287         struct ieee80211_sub_if_data *sdata;
1288
1289         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1290
1291         if (params->mac)
1292                 return sta_info_destroy_addr_bss(sdata, params->mac);
1293
1294         sta_info_flush(sdata);
1295         return 0;
1296 }
1297
1298 static int ieee80211_change_station(struct wiphy *wiphy,
1299                                     struct net_device *dev, const u8 *mac,
1300                                     struct station_parameters *params)
1301 {
1302         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1303         struct ieee80211_local *local = wiphy_priv(wiphy);
1304         struct sta_info *sta;
1305         struct ieee80211_sub_if_data *vlansdata;
1306         enum cfg80211_station_type statype;
1307         int err;
1308
1309         mutex_lock(&local->sta_mtx);
1310
1311         sta = sta_info_get_bss(sdata, mac);
1312         if (!sta) {
1313                 err = -ENOENT;
1314                 goto out_err;
1315         }
1316
1317         switch (sdata->vif.type) {
1318         case NL80211_IFTYPE_MESH_POINT:
1319                 if (sdata->u.mesh.user_mpm)
1320                         statype = CFG80211_STA_MESH_PEER_USER;
1321                 else
1322                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1323                 break;
1324         case NL80211_IFTYPE_ADHOC:
1325                 statype = CFG80211_STA_IBSS;
1326                 break;
1327         case NL80211_IFTYPE_STATION:
1328                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1329                         statype = CFG80211_STA_AP_STA;
1330                         break;
1331                 }
1332                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1333                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1334                 else
1335                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1336                 break;
1337         case NL80211_IFTYPE_AP:
1338         case NL80211_IFTYPE_AP_VLAN:
1339                 statype = CFG80211_STA_AP_CLIENT;
1340                 break;
1341         default:
1342                 err = -EOPNOTSUPP;
1343                 goto out_err;
1344         }
1345
1346         err = cfg80211_check_station_change(wiphy, params, statype);
1347         if (err)
1348                 goto out_err;
1349
1350         if (params->vlan && params->vlan != sta->sdata->dev) {
1351                 bool prev_4addr = false;
1352                 bool new_4addr = false;
1353
1354                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1355
1356                 if (params->vlan->ieee80211_ptr->use_4addr) {
1357                         if (vlansdata->u.vlan.sta) {
1358                                 err = -EBUSY;
1359                                 goto out_err;
1360                         }
1361
1362                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1363                         new_4addr = true;
1364                 }
1365
1366                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1367                     sta->sdata->u.vlan.sta) {
1368                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1369                         prev_4addr = true;
1370                 }
1371
1372                 sta->sdata = vlansdata;
1373                 ieee80211_check_fast_xmit(sta);
1374
1375                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1376                     prev_4addr != new_4addr) {
1377                         if (new_4addr)
1378                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1379                         else
1380                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1381                 }
1382
1383                 ieee80211_send_layer2_update(sta);
1384         }
1385
1386         err = sta_apply_parameters(local, sta, params);
1387         if (err)
1388                 goto out_err;
1389
1390         mutex_unlock(&local->sta_mtx);
1391
1392         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1393              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1394             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1395             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1396             sta_info_tx_streams(sta) != 1) {
1397                 ht_dbg(sta->sdata,
1398                        "%pM just authorized and MIMO capable - update SMPS\n",
1399                        sta->sta.addr);
1400                 ieee80211_send_smps_action(sta->sdata,
1401                         sta->sdata->bss->req_smps,
1402                         sta->sta.addr,
1403                         sta->sdata->vif.bss_conf.bssid);
1404         }
1405
1406         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1407             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1408                 ieee80211_recalc_ps(local, -1);
1409                 ieee80211_recalc_ps_vif(sdata);
1410         }
1411
1412         return 0;
1413 out_err:
1414         mutex_unlock(&local->sta_mtx);
1415         return err;
1416 }
1417
1418 #ifdef CONFIG_MAC80211_MESH
1419 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1420                                const u8 *dst, const u8 *next_hop)
1421 {
1422         struct ieee80211_sub_if_data *sdata;
1423         struct mesh_path *mpath;
1424         struct sta_info *sta;
1425
1426         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1427
1428         rcu_read_lock();
1429         sta = sta_info_get(sdata, next_hop);
1430         if (!sta) {
1431                 rcu_read_unlock();
1432                 return -ENOENT;
1433         }
1434
1435         mpath = mesh_path_add(sdata, dst);
1436         if (IS_ERR(mpath)) {
1437                 rcu_read_unlock();
1438                 return PTR_ERR(mpath);
1439         }
1440
1441         mesh_path_fix_nexthop(mpath, sta);
1442
1443         rcu_read_unlock();
1444         return 0;
1445 }
1446
1447 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1448                                const u8 *dst)
1449 {
1450         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451
1452         if (dst)
1453                 return mesh_path_del(sdata, dst);
1454
1455         mesh_path_flush_by_iface(sdata);
1456         return 0;
1457 }
1458
1459 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1460                                   const u8 *dst, const u8 *next_hop)
1461 {
1462         struct ieee80211_sub_if_data *sdata;
1463         struct mesh_path *mpath;
1464         struct sta_info *sta;
1465
1466         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1467
1468         rcu_read_lock();
1469
1470         sta = sta_info_get(sdata, next_hop);
1471         if (!sta) {
1472                 rcu_read_unlock();
1473                 return -ENOENT;
1474         }
1475
1476         mpath = mesh_path_lookup(sdata, dst);
1477         if (!mpath) {
1478                 rcu_read_unlock();
1479                 return -ENOENT;
1480         }
1481
1482         mesh_path_fix_nexthop(mpath, sta);
1483
1484         rcu_read_unlock();
1485         return 0;
1486 }
1487
1488 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1489                             struct mpath_info *pinfo)
1490 {
1491         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1492
1493         if (next_hop_sta)
1494                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1495         else
1496                 eth_zero_addr(next_hop);
1497
1498         memset(pinfo, 0, sizeof(*pinfo));
1499
1500         pinfo->generation = mesh_paths_generation;
1501
1502         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1503                         MPATH_INFO_SN |
1504                         MPATH_INFO_METRIC |
1505                         MPATH_INFO_EXPTIME |
1506                         MPATH_INFO_DISCOVERY_TIMEOUT |
1507                         MPATH_INFO_DISCOVERY_RETRIES |
1508                         MPATH_INFO_FLAGS;
1509
1510         pinfo->frame_qlen = mpath->frame_queue.qlen;
1511         pinfo->sn = mpath->sn;
1512         pinfo->metric = mpath->metric;
1513         if (time_before(jiffies, mpath->exp_time))
1514                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1515         pinfo->discovery_timeout =
1516                         jiffies_to_msecs(mpath->discovery_timeout);
1517         pinfo->discovery_retries = mpath->discovery_retries;
1518         if (mpath->flags & MESH_PATH_ACTIVE)
1519                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1520         if (mpath->flags & MESH_PATH_RESOLVING)
1521                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1522         if (mpath->flags & MESH_PATH_SN_VALID)
1523                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1524         if (mpath->flags & MESH_PATH_FIXED)
1525                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1526         if (mpath->flags & MESH_PATH_RESOLVED)
1527                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1528 }
1529
1530 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1531                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1532
1533 {
1534         struct ieee80211_sub_if_data *sdata;
1535         struct mesh_path *mpath;
1536
1537         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538
1539         rcu_read_lock();
1540         mpath = mesh_path_lookup(sdata, dst);
1541         if (!mpath) {
1542                 rcu_read_unlock();
1543                 return -ENOENT;
1544         }
1545         memcpy(dst, mpath->dst, ETH_ALEN);
1546         mpath_set_pinfo(mpath, next_hop, pinfo);
1547         rcu_read_unlock();
1548         return 0;
1549 }
1550
1551 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1552                                 int idx, u8 *dst, u8 *next_hop,
1553                                 struct mpath_info *pinfo)
1554 {
1555         struct ieee80211_sub_if_data *sdata;
1556         struct mesh_path *mpath;
1557
1558         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1559
1560         rcu_read_lock();
1561         mpath = mesh_path_lookup_by_idx(sdata, idx);
1562         if (!mpath) {
1563                 rcu_read_unlock();
1564                 return -ENOENT;
1565         }
1566         memcpy(dst, mpath->dst, ETH_ALEN);
1567         mpath_set_pinfo(mpath, next_hop, pinfo);
1568         rcu_read_unlock();
1569         return 0;
1570 }
1571
1572 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1573                           struct mpath_info *pinfo)
1574 {
1575         memset(pinfo, 0, sizeof(*pinfo));
1576         memcpy(mpp, mpath->mpp, ETH_ALEN);
1577
1578         pinfo->generation = mpp_paths_generation;
1579 }
1580
1581 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1582                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1583
1584 {
1585         struct ieee80211_sub_if_data *sdata;
1586         struct mesh_path *mpath;
1587
1588         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1589
1590         rcu_read_lock();
1591         mpath = mpp_path_lookup(sdata, dst);
1592         if (!mpath) {
1593                 rcu_read_unlock();
1594                 return -ENOENT;
1595         }
1596         memcpy(dst, mpath->dst, ETH_ALEN);
1597         mpp_set_pinfo(mpath, mpp, pinfo);
1598         rcu_read_unlock();
1599         return 0;
1600 }
1601
1602 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1603                               int idx, u8 *dst, u8 *mpp,
1604                               struct mpath_info *pinfo)
1605 {
1606         struct ieee80211_sub_if_data *sdata;
1607         struct mesh_path *mpath;
1608
1609         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1610
1611         rcu_read_lock();
1612         mpath = mpp_path_lookup_by_idx(sdata, idx);
1613         if (!mpath) {
1614                 rcu_read_unlock();
1615                 return -ENOENT;
1616         }
1617         memcpy(dst, mpath->dst, ETH_ALEN);
1618         mpp_set_pinfo(mpath, mpp, pinfo);
1619         rcu_read_unlock();
1620         return 0;
1621 }
1622
1623 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1624                                 struct net_device *dev,
1625                                 struct mesh_config *conf)
1626 {
1627         struct ieee80211_sub_if_data *sdata;
1628         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629
1630         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1631         return 0;
1632 }
1633
1634 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1635 {
1636         return (mask >> (parm-1)) & 0x1;
1637 }
1638
1639 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1640                 const struct mesh_setup *setup)
1641 {
1642         u8 *new_ie;
1643         const u8 *old_ie;
1644         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1645                                         struct ieee80211_sub_if_data, u.mesh);
1646
1647         /* allocate information elements */
1648         new_ie = NULL;
1649         old_ie = ifmsh->ie;
1650
1651         if (setup->ie_len) {
1652                 new_ie = kmemdup(setup->ie, setup->ie_len,
1653                                 GFP_KERNEL);
1654                 if (!new_ie)
1655                         return -ENOMEM;
1656         }
1657         ifmsh->ie_len = setup->ie_len;
1658         ifmsh->ie = new_ie;
1659         kfree(old_ie);
1660
1661         /* now copy the rest of the setup parameters */
1662         ifmsh->mesh_id_len = setup->mesh_id_len;
1663         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1664         ifmsh->mesh_sp_id = setup->sync_method;
1665         ifmsh->mesh_pp_id = setup->path_sel_proto;
1666         ifmsh->mesh_pm_id = setup->path_metric;
1667         ifmsh->user_mpm = setup->user_mpm;
1668         ifmsh->mesh_auth_id = setup->auth_id;
1669         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1670         if (setup->is_authenticated)
1671                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1672         if (setup->is_secure)
1673                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1674
1675         /* mcast rate setting in Mesh Node */
1676         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1677                                                 sizeof(setup->mcast_rate));
1678         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1679
1680         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1681         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1682
1683         return 0;
1684 }
1685
1686 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1687                                         struct net_device *dev, u32 mask,
1688                                         const struct mesh_config *nconf)
1689 {
1690         struct mesh_config *conf;
1691         struct ieee80211_sub_if_data *sdata;
1692         struct ieee80211_if_mesh *ifmsh;
1693
1694         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695         ifmsh = &sdata->u.mesh;
1696
1697         /* Set the config options which we are interested in setting */
1698         conf = &(sdata->u.mesh.mshcfg);
1699         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1700                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1701         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1702                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1703         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1704                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1705         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1706                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1707         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1708                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1710                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1711         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1712                 conf->element_ttl = nconf->element_ttl;
1713         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1714                 if (ifmsh->user_mpm)
1715                         return -EBUSY;
1716                 conf->auto_open_plinks = nconf->auto_open_plinks;
1717         }
1718         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1719                 conf->dot11MeshNbrOffsetMaxNeighbor =
1720                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1721         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1722                 conf->dot11MeshHWMPmaxPREQretries =
1723                         nconf->dot11MeshHWMPmaxPREQretries;
1724         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1725                 conf->path_refresh_time = nconf->path_refresh_time;
1726         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1727                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1728         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1729                 conf->dot11MeshHWMPactivePathTimeout =
1730                         nconf->dot11MeshHWMPactivePathTimeout;
1731         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1732                 conf->dot11MeshHWMPpreqMinInterval =
1733                         nconf->dot11MeshHWMPpreqMinInterval;
1734         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1735                 conf->dot11MeshHWMPperrMinInterval =
1736                         nconf->dot11MeshHWMPperrMinInterval;
1737         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1738                            mask))
1739                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1740                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1741         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1742                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1743                 ieee80211_mesh_root_setup(ifmsh);
1744         }
1745         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1746                 /* our current gate announcement implementation rides on root
1747                  * announcements, so require this ifmsh to also be a root node
1748                  * */
1749                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1750                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1751                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1752                         ieee80211_mesh_root_setup(ifmsh);
1753                 }
1754                 conf->dot11MeshGateAnnouncementProtocol =
1755                         nconf->dot11MeshGateAnnouncementProtocol;
1756         }
1757         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1758                 conf->dot11MeshHWMPRannInterval =
1759                         nconf->dot11MeshHWMPRannInterval;
1760         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1761                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1762         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1763                 /* our RSSI threshold implementation is supported only for
1764                  * devices that report signal in dBm.
1765                  */
1766                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1767                         return -ENOTSUPP;
1768                 conf->rssi_threshold = nconf->rssi_threshold;
1769         }
1770         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1771                 conf->ht_opmode = nconf->ht_opmode;
1772                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1773                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1774         }
1775         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1776                 conf->dot11MeshHWMPactivePathToRootTimeout =
1777                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1778         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1779                 conf->dot11MeshHWMProotInterval =
1780                         nconf->dot11MeshHWMProotInterval;
1781         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1782                 conf->dot11MeshHWMPconfirmationInterval =
1783                         nconf->dot11MeshHWMPconfirmationInterval;
1784         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1785                 conf->power_mode = nconf->power_mode;
1786                 ieee80211_mps_local_status_update(sdata);
1787         }
1788         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1789                 conf->dot11MeshAwakeWindowDuration =
1790                         nconf->dot11MeshAwakeWindowDuration;
1791         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1792                 conf->plink_timeout = nconf->plink_timeout;
1793         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1794         return 0;
1795 }
1796
1797 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1798                                const struct mesh_config *conf,
1799                                const struct mesh_setup *setup)
1800 {
1801         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1802         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1803         int err;
1804
1805         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1806         err = copy_mesh_setup(ifmsh, setup);
1807         if (err)
1808                 return err;
1809
1810         /* can mesh use other SMPS modes? */
1811         sdata->smps_mode = IEEE80211_SMPS_OFF;
1812         sdata->needed_rx_chains = sdata->local->rx_chains;
1813
1814         mutex_lock(&sdata->local->mtx);
1815         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1816                                         IEEE80211_CHANCTX_SHARED);
1817         mutex_unlock(&sdata->local->mtx);
1818         if (err)
1819                 return err;
1820
1821         return ieee80211_start_mesh(sdata);
1822 }
1823
1824 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1825 {
1826         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1827
1828         ieee80211_stop_mesh(sdata);
1829         mutex_lock(&sdata->local->mtx);
1830         ieee80211_vif_release_channel(sdata);
1831         mutex_unlock(&sdata->local->mtx);
1832
1833         return 0;
1834 }
1835 #endif
1836
1837 static int ieee80211_change_bss(struct wiphy *wiphy,
1838                                 struct net_device *dev,
1839                                 struct bss_parameters *params)
1840 {
1841         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842         enum ieee80211_band band;
1843         u32 changed = 0;
1844
1845         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1846                 return -ENOENT;
1847
1848         band = ieee80211_get_sdata_band(sdata);
1849
1850         if (params->use_cts_prot >= 0) {
1851                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1852                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1853         }
1854         if (params->use_short_preamble >= 0) {
1855                 sdata->vif.bss_conf.use_short_preamble =
1856                         params->use_short_preamble;
1857                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1858         }
1859
1860         if (!sdata->vif.bss_conf.use_short_slot &&
1861             band == IEEE80211_BAND_5GHZ) {
1862                 sdata->vif.bss_conf.use_short_slot = true;
1863                 changed |= BSS_CHANGED_ERP_SLOT;
1864         }
1865
1866         if (params->use_short_slot_time >= 0) {
1867                 sdata->vif.bss_conf.use_short_slot =
1868                         params->use_short_slot_time;
1869                 changed |= BSS_CHANGED_ERP_SLOT;
1870         }
1871
1872         if (params->basic_rates) {
1873                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1874                                          wiphy->bands[band],
1875                                          params->basic_rates,
1876                                          params->basic_rates_len,
1877                                          &sdata->vif.bss_conf.basic_rates);
1878                 changed |= BSS_CHANGED_BASIC_RATES;
1879         }
1880
1881         if (params->ap_isolate >= 0) {
1882                 if (params->ap_isolate)
1883                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1884                 else
1885                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1886         }
1887
1888         if (params->ht_opmode >= 0) {
1889                 sdata->vif.bss_conf.ht_operation_mode =
1890                         (u16) params->ht_opmode;
1891                 changed |= BSS_CHANGED_HT;
1892         }
1893
1894         if (params->p2p_ctwindow >= 0) {
1895                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1896                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1897                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1898                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1899                 changed |= BSS_CHANGED_P2P_PS;
1900         }
1901
1902         if (params->p2p_opp_ps > 0) {
1903                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1904                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1905                 changed |= BSS_CHANGED_P2P_PS;
1906         } else if (params->p2p_opp_ps == 0) {
1907                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1908                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1909                 changed |= BSS_CHANGED_P2P_PS;
1910         }
1911
1912         ieee80211_bss_info_change_notify(sdata, changed);
1913
1914         return 0;
1915 }
1916
1917 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1918                                     struct net_device *dev,
1919                                     struct ieee80211_txq_params *params)
1920 {
1921         struct ieee80211_local *local = wiphy_priv(wiphy);
1922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923         struct ieee80211_tx_queue_params p;
1924
1925         if (!local->ops->conf_tx)
1926                 return -EOPNOTSUPP;
1927
1928         if (local->hw.queues < IEEE80211_NUM_ACS)
1929                 return -EOPNOTSUPP;
1930
1931         memset(&p, 0, sizeof(p));
1932         p.aifs = params->aifs;
1933         p.cw_max = params->cwmax;
1934         p.cw_min = params->cwmin;
1935         p.txop = params->txop;
1936
1937         /*
1938          * Setting tx queue params disables u-apsd because it's only
1939          * called in master mode.
1940          */
1941         p.uapsd = false;
1942
1943         sdata->tx_conf[params->ac] = p;
1944         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1945                 wiphy_debug(local->hw.wiphy,
1946                             "failed to set TX queue parameters for AC %d\n",
1947                             params->ac);
1948                 return -EINVAL;
1949         }
1950
1951         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1952
1953         return 0;
1954 }
1955
1956 #ifdef CONFIG_PM
1957 static int ieee80211_suspend(struct wiphy *wiphy,
1958                              struct cfg80211_wowlan *wowlan)
1959 {
1960         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1961 }
1962
1963 static int ieee80211_resume(struct wiphy *wiphy)
1964 {
1965         return __ieee80211_resume(wiphy_priv(wiphy));
1966 }
1967 #else
1968 #define ieee80211_suspend NULL
1969 #define ieee80211_resume NULL
1970 #endif
1971
1972 static int ieee80211_scan(struct wiphy *wiphy,
1973                           struct cfg80211_scan_request *req)
1974 {
1975         struct ieee80211_sub_if_data *sdata;
1976
1977         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1978
1979         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1980         case NL80211_IFTYPE_STATION:
1981         case NL80211_IFTYPE_ADHOC:
1982         case NL80211_IFTYPE_MESH_POINT:
1983         case NL80211_IFTYPE_P2P_CLIENT:
1984         case NL80211_IFTYPE_P2P_DEVICE:
1985                 break;
1986         case NL80211_IFTYPE_P2P_GO:
1987                 if (sdata->local->ops->hw_scan)
1988                         break;
1989                 /*
1990                  * FIXME: implement NoA while scanning in software,
1991                  * for now fall through to allow scanning only when
1992                  * beaconing hasn't been configured yet
1993                  */
1994         case NL80211_IFTYPE_AP:
1995                 /*
1996                  * If the scan has been forced (and the driver supports
1997                  * forcing), don't care about being beaconing already.
1998                  * This will create problems to the attached stations (e.g. all
1999                  * the  frames sent while scanning on other channel will be
2000                  * lost)
2001                  */
2002                 if (sdata->u.ap.beacon &&
2003                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2004                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2005                         return -EOPNOTSUPP;
2006                 break;
2007         default:
2008                 return -EOPNOTSUPP;
2009         }
2010
2011         return ieee80211_request_scan(sdata, req);
2012 }
2013
2014 static int
2015 ieee80211_sched_scan_start(struct wiphy *wiphy,
2016                            struct net_device *dev,
2017                            struct cfg80211_sched_scan_request *req)
2018 {
2019         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2020
2021         if (!sdata->local->ops->sched_scan_start)
2022                 return -EOPNOTSUPP;
2023
2024         return ieee80211_request_sched_scan_start(sdata, req);
2025 }
2026
2027 static int
2028 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2029 {
2030         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2031
2032         if (!sdata->local->ops->sched_scan_stop)
2033                 return -EOPNOTSUPP;
2034
2035         return ieee80211_request_sched_scan_stop(sdata);
2036 }
2037
2038 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2039                           struct cfg80211_auth_request *req)
2040 {
2041         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043
2044 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2045                            struct cfg80211_assoc_request *req)
2046 {
2047         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2048 }
2049
2050 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2051                             struct cfg80211_deauth_request *req)
2052 {
2053         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2054 }
2055
2056 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2057                               struct cfg80211_disassoc_request *req)
2058 {
2059         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2060 }
2061
2062 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2063                                struct cfg80211_ibss_params *params)
2064 {
2065         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2066 }
2067
2068 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2069 {
2070         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2071 }
2072
2073 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2074                               struct ocb_setup *setup)
2075 {
2076         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2077 }
2078
2079 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2080 {
2081         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2082 }
2083
2084 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2085                                     int rate[IEEE80211_NUM_BANDS])
2086 {
2087         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2088
2089         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2090                sizeof(int) * IEEE80211_NUM_BANDS);
2091
2092         return 0;
2093 }
2094
2095 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2096 {
2097         struct ieee80211_local *local = wiphy_priv(wiphy);
2098         int err;
2099
2100         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2101                 ieee80211_check_fast_xmit_all(local);
2102
2103                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2104
2105                 if (err) {
2106                         ieee80211_check_fast_xmit_all(local);
2107                         return err;
2108                 }
2109         }
2110
2111         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2112             (changed & WIPHY_PARAM_DYN_ACK)) {
2113                 s16 coverage_class;
2114
2115                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2116                                         wiphy->coverage_class : -1;
2117                 err = drv_set_coverage_class(local, coverage_class);
2118
2119                 if (err)
2120                         return err;
2121         }
2122
2123         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2124                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2125
2126                 if (err)
2127                         return err;
2128         }
2129
2130         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2131                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2132                         return -EINVAL;
2133                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2134         }
2135         if (changed & WIPHY_PARAM_RETRY_LONG) {
2136                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2137                         return -EINVAL;
2138                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2139         }
2140         if (changed &
2141             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2142                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2143
2144         return 0;
2145 }
2146
2147 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2148                                   struct wireless_dev *wdev,
2149                                   enum nl80211_tx_power_setting type, int mbm)
2150 {
2151         struct ieee80211_local *local = wiphy_priv(wiphy);
2152         struct ieee80211_sub_if_data *sdata;
2153         enum nl80211_tx_power_setting txp_type = type;
2154         bool update_txp_type = false;
2155
2156         if (wdev) {
2157                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2158
2159                 switch (type) {
2160                 case NL80211_TX_POWER_AUTOMATIC:
2161                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2162                         txp_type = NL80211_TX_POWER_LIMITED;
2163                         break;
2164                 case NL80211_TX_POWER_LIMITED:
2165                 case NL80211_TX_POWER_FIXED:
2166                         if (mbm < 0 || (mbm % 100))
2167                                 return -EOPNOTSUPP;
2168                         sdata->user_power_level = MBM_TO_DBM(mbm);
2169                         break;
2170                 }
2171
2172                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2173                         update_txp_type = true;
2174                         sdata->vif.bss_conf.txpower_type = txp_type;
2175                 }
2176
2177                 ieee80211_recalc_txpower(sdata, update_txp_type);
2178
2179                 return 0;
2180         }
2181
2182         switch (type) {
2183         case NL80211_TX_POWER_AUTOMATIC:
2184                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2185                 txp_type = NL80211_TX_POWER_LIMITED;
2186                 break;
2187         case NL80211_TX_POWER_LIMITED:
2188         case NL80211_TX_POWER_FIXED:
2189                 if (mbm < 0 || (mbm % 100))
2190                         return -EOPNOTSUPP;
2191                 local->user_power_level = MBM_TO_DBM(mbm);
2192                 break;
2193         }
2194
2195         mutex_lock(&local->iflist_mtx);
2196         list_for_each_entry(sdata, &local->interfaces, list) {
2197                 sdata->user_power_level = local->user_power_level;
2198                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2199                         update_txp_type = true;
2200                 sdata->vif.bss_conf.txpower_type = txp_type;
2201         }
2202         list_for_each_entry(sdata, &local->interfaces, list)
2203                 ieee80211_recalc_txpower(sdata, update_txp_type);
2204         mutex_unlock(&local->iflist_mtx);
2205
2206         return 0;
2207 }
2208
2209 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2210                                   struct wireless_dev *wdev,
2211                                   int *dbm)
2212 {
2213         struct ieee80211_local *local = wiphy_priv(wiphy);
2214         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2215
2216         if (local->ops->get_txpower)
2217                 return drv_get_txpower(local, sdata, dbm);
2218
2219         if (!local->use_chanctx)
2220                 *dbm = local->hw.conf.power_level;
2221         else
2222                 *dbm = sdata->vif.bss_conf.txpower;
2223
2224         return 0;
2225 }
2226
2227 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2228                                   const u8 *addr)
2229 {
2230         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2231
2232         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2233
2234         return 0;
2235 }
2236
2237 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2238 {
2239         struct ieee80211_local *local = wiphy_priv(wiphy);
2240
2241         drv_rfkill_poll(local);
2242 }
2243
2244 #ifdef CONFIG_NL80211_TESTMODE
2245 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2246                                   struct wireless_dev *wdev,
2247                                   void *data, int len)
2248 {
2249         struct ieee80211_local *local = wiphy_priv(wiphy);
2250         struct ieee80211_vif *vif = NULL;
2251
2252         if (!local->ops->testmode_cmd)
2253                 return -EOPNOTSUPP;
2254
2255         if (wdev) {
2256                 struct ieee80211_sub_if_data *sdata;
2257
2258                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2259                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2260                         vif = &sdata->vif;
2261         }
2262
2263         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2264 }
2265
2266 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2267                                    struct sk_buff *skb,
2268                                    struct netlink_callback *cb,
2269                                    void *data, int len)
2270 {
2271         struct ieee80211_local *local = wiphy_priv(wiphy);
2272
2273         if (!local->ops->testmode_dump)
2274                 return -EOPNOTSUPP;
2275
2276         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2277 }
2278 #endif
2279
2280 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2281                                 enum ieee80211_smps_mode smps_mode)
2282 {
2283         struct sta_info *sta;
2284         enum ieee80211_smps_mode old_req;
2285
2286         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2287                 return -EINVAL;
2288
2289         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2290                 return 0;
2291
2292         old_req = sdata->u.ap.req_smps;
2293         sdata->u.ap.req_smps = smps_mode;
2294
2295         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2296         if (old_req == smps_mode ||
2297             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2298                 return 0;
2299
2300          /* If no associated stations, there's no need to do anything */
2301         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2302                 sdata->smps_mode = smps_mode;
2303                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2304                 return 0;
2305         }
2306
2307         ht_dbg(sdata,
2308                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2309                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2310
2311         mutex_lock(&sdata->local->sta_mtx);
2312         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2313                 /*
2314                  * Only stations associated to our AP and
2315                  * associated VLANs
2316                  */
2317                 if (sta->sdata->bss != &sdata->u.ap)
2318                         continue;
2319
2320                 /* This station doesn't support MIMO - skip it */
2321                 if (sta_info_tx_streams(sta) == 1)
2322                         continue;
2323
2324                 /*
2325                  * Don't wake up a STA just to send the action frame
2326                  * unless we are getting more restrictive.
2327                  */
2328                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2329                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2330                                                    smps_mode)) {
2331                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2332                                sta->sta.addr);
2333                         continue;
2334                 }
2335
2336                 /*
2337                  * If the STA is not authorized, wait until it gets
2338                  * authorized and the action frame will be sent then.
2339                  */
2340                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2341                         continue;
2342
2343                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2344                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2345                                            sdata->vif.bss_conf.bssid);
2346         }
2347         mutex_unlock(&sdata->local->sta_mtx);
2348
2349         sdata->smps_mode = smps_mode;
2350         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2351
2352         return 0;
2353 }
2354
2355 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2356                                  enum ieee80211_smps_mode smps_mode)
2357 {
2358         const u8 *ap;
2359         enum ieee80211_smps_mode old_req;
2360         int err;
2361
2362         lockdep_assert_held(&sdata->wdev.mtx);
2363
2364         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2365                 return -EINVAL;
2366
2367         old_req = sdata->u.mgd.req_smps;
2368         sdata->u.mgd.req_smps = smps_mode;
2369
2370         if (old_req == smps_mode &&
2371             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2372                 return 0;
2373
2374         /*
2375          * If not associated, or current association is not an HT
2376          * association, there's no need to do anything, just store
2377          * the new value until we associate.
2378          */
2379         if (!sdata->u.mgd.associated ||
2380             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2381                 return 0;
2382
2383         ap = sdata->u.mgd.associated->bssid;
2384
2385         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2386                 if (sdata->u.mgd.powersave)
2387                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2388                 else
2389                         smps_mode = IEEE80211_SMPS_OFF;
2390         }
2391
2392         /* send SM PS frame to AP */
2393         err = ieee80211_send_smps_action(sdata, smps_mode,
2394                                          ap, ap);
2395         if (err)
2396                 sdata->u.mgd.req_smps = old_req;
2397
2398         return err;
2399 }
2400
2401 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2402                                     bool enabled, int timeout)
2403 {
2404         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2405         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2406
2407         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2408                 return -EOPNOTSUPP;
2409
2410         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2411                 return -EOPNOTSUPP;
2412
2413         if (enabled == sdata->u.mgd.powersave &&
2414             timeout == local->dynamic_ps_forced_timeout)
2415                 return 0;
2416
2417         sdata->u.mgd.powersave = enabled;
2418         local->dynamic_ps_forced_timeout = timeout;
2419
2420         /* no change, but if automatic follow powersave */
2421         sdata_lock(sdata);
2422         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2423         sdata_unlock(sdata);
2424
2425         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2426                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2427
2428         ieee80211_recalc_ps(local, -1);
2429         ieee80211_recalc_ps_vif(sdata);
2430
2431         return 0;
2432 }
2433
2434 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2435                                          struct net_device *dev,
2436                                          s32 rssi_thold, u32 rssi_hyst)
2437 {
2438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2439         struct ieee80211_vif *vif = &sdata->vif;
2440         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2441
2442         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2443             rssi_hyst == bss_conf->cqm_rssi_hyst)
2444                 return 0;
2445
2446         bss_conf->cqm_rssi_thold = rssi_thold;
2447         bss_conf->cqm_rssi_hyst = rssi_hyst;
2448
2449         /* tell the driver upon association, unless already associated */
2450         if (sdata->u.mgd.associated &&
2451             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2452                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2453
2454         return 0;
2455 }
2456
2457 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2458                                       struct net_device *dev,
2459                                       const u8 *addr,
2460                                       const struct cfg80211_bitrate_mask *mask)
2461 {
2462         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2463         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2464         int i, ret;
2465
2466         if (!ieee80211_sdata_running(sdata))
2467                 return -ENETDOWN;
2468
2469         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2470                 ret = drv_set_bitrate_mask(local, sdata, mask);
2471                 if (ret)
2472                         return ret;
2473         }
2474
2475         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2476                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2477                 int j;
2478
2479                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2480                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2481                        sizeof(mask->control[i].ht_mcs));
2482
2483                 sdata->rc_has_mcs_mask[i] = false;
2484                 if (!sband)
2485                         continue;
2486
2487                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2488                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2489                                 sdata->rc_has_mcs_mask[i] = true;
2490                                 break;
2491                         }
2492         }
2493
2494         return 0;
2495 }
2496
2497 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2498                                            struct ieee80211_roc_work *new_roc,
2499                                            struct ieee80211_roc_work *cur_roc)
2500 {
2501         unsigned long now = jiffies;
2502         unsigned long remaining = cur_roc->hw_start_time +
2503                                   msecs_to_jiffies(cur_roc->duration) -
2504                                   now;
2505
2506         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2507                 return false;
2508
2509         /* if it doesn't fit entirely, schedule a new one */
2510         if (new_roc->duration > jiffies_to_msecs(remaining))
2511                 return false;
2512
2513         ieee80211_handle_roc_started(new_roc);
2514
2515         /* add to dependents so we send the expired event properly */
2516         list_add_tail(&new_roc->list, &cur_roc->dependents);
2517         return true;
2518 }
2519
2520 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2521 {
2522         lockdep_assert_held(&local->mtx);
2523
2524         local->roc_cookie_counter++;
2525
2526         /* wow, you wrapped 64 bits ... more likely a bug */
2527         if (WARN_ON(local->roc_cookie_counter == 0))
2528                 local->roc_cookie_counter++;
2529
2530         return local->roc_cookie_counter;
2531 }
2532
2533 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2534                                     struct ieee80211_sub_if_data *sdata,
2535                                     struct ieee80211_channel *channel,
2536                                     unsigned int duration, u64 *cookie,
2537                                     struct sk_buff *txskb,
2538                                     enum ieee80211_roc_type type)
2539 {
2540         struct ieee80211_roc_work *roc, *tmp;
2541         bool queued = false;
2542         int ret;
2543
2544         lockdep_assert_held(&local->mtx);
2545
2546         if (local->use_chanctx && !local->ops->remain_on_channel)
2547                 return -EOPNOTSUPP;
2548
2549         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2550         if (!roc)
2551                 return -ENOMEM;
2552
2553         /*
2554          * If the duration is zero, then the driver
2555          * wouldn't actually do anything. Set it to
2556          * 10 for now.
2557          *
2558          * TODO: cancel the off-channel operation
2559          *       when we get the SKB's TX status and
2560          *       the wait time was zero before.
2561          */
2562         if (!duration)
2563                 duration = 10;
2564
2565         roc->chan = channel;
2566         roc->duration = duration;
2567         roc->req_duration = duration;
2568         roc->frame = txskb;
2569         roc->type = type;
2570         roc->sdata = sdata;
2571         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2572         INIT_LIST_HEAD(&roc->dependents);
2573
2574         /*
2575          * cookie is either the roc cookie (for normal roc)
2576          * or the SKB (for mgmt TX)
2577          */
2578         if (!txskb) {
2579                 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2580                 *cookie = roc->cookie;
2581         } else {
2582                 roc->mgmt_tx_cookie = *cookie;
2583         }
2584
2585         /* if there's one pending or we're scanning, queue this one */
2586         if (!list_empty(&local->roc_list) ||
2587             local->scanning || ieee80211_is_radar_required(local))
2588                 goto out_check_combine;
2589
2590         /* if not HW assist, just queue & schedule work */
2591         if (!local->ops->remain_on_channel) {
2592                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2593                 goto out_queue;
2594         }
2595
2596         /* otherwise actually kick it off here (for error handling) */
2597
2598         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2599         if (ret) {
2600                 kfree(roc);
2601                 return ret;
2602         }
2603
2604         roc->started = true;
2605         goto out_queue;
2606
2607  out_check_combine:
2608         list_for_each_entry(tmp, &local->roc_list, list) {
2609                 if (tmp->chan != channel || tmp->sdata != sdata)
2610                         continue;
2611
2612                 /*
2613                  * Extend this ROC if possible:
2614                  *
2615                  * If it hasn't started yet, just increase the duration
2616                  * and add the new one to the list of dependents.
2617                  * If the type of the new ROC has higher priority, modify the
2618                  * type of the previous one to match that of the new one.
2619                  */
2620                 if (!tmp->started) {
2621                         list_add_tail(&roc->list, &tmp->dependents);
2622                         tmp->duration = max(tmp->duration, roc->duration);
2623                         tmp->type = max(tmp->type, roc->type);
2624                         queued = true;
2625                         break;
2626                 }
2627
2628                 /* If it has already started, it's more difficult ... */
2629                 if (local->ops->remain_on_channel) {
2630                         /*
2631                          * In the offloaded ROC case, if it hasn't begun, add
2632                          * this new one to the dependent list to be handled
2633                          * when the master one begins. If it has begun,
2634                          * check if it fits entirely within the existing one,
2635                          * in which case it will just be dependent as well.
2636                          * Otherwise, schedule it by itself.
2637                          */
2638                         if (!tmp->hw_begun) {
2639                                 list_add_tail(&roc->list, &tmp->dependents);
2640                                 queued = true;
2641                                 break;
2642                         }
2643
2644                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2645                                 queued = true;
2646                 } else if (del_timer_sync(&tmp->work.timer)) {
2647                         unsigned long new_end;
2648
2649                         /*
2650                          * In the software ROC case, cancel the timer, if
2651                          * that fails then the finish work is already
2652                          * queued/pending and thus we queue the new ROC
2653                          * normally, if that succeeds then we can extend
2654                          * the timer duration and TX the frame (if any.)
2655                          */
2656
2657                         list_add_tail(&roc->list, &tmp->dependents);
2658                         queued = true;
2659
2660                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2661
2662                         /* ok, it was started & we canceled timer */
2663                         if (time_after(new_end, tmp->work.timer.expires))
2664                                 mod_timer(&tmp->work.timer, new_end);
2665                         else
2666                                 add_timer(&tmp->work.timer);
2667
2668                         ieee80211_handle_roc_started(roc);
2669                 }
2670                 break;
2671         }
2672
2673  out_queue:
2674         if (!queued)
2675                 list_add_tail(&roc->list, &local->roc_list);
2676
2677         return 0;
2678 }
2679
2680 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2681                                        struct wireless_dev *wdev,
2682                                        struct ieee80211_channel *chan,
2683                                        unsigned int duration,
2684                                        u64 *cookie)
2685 {
2686         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2687         struct ieee80211_local *local = sdata->local;
2688         int ret;
2689
2690         mutex_lock(&local->mtx);
2691         ret = ieee80211_start_roc_work(local, sdata, chan,
2692                                        duration, cookie, NULL,
2693                                        IEEE80211_ROC_TYPE_NORMAL);
2694         mutex_unlock(&local->mtx);
2695
2696         return ret;
2697 }
2698
2699 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2700                                 u64 cookie, bool mgmt_tx)
2701 {
2702         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2703         int ret;
2704
2705         mutex_lock(&local->mtx);
2706         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2707                 struct ieee80211_roc_work *dep, *tmp2;
2708
2709                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2710                         if (!mgmt_tx && dep->cookie != cookie)
2711                                 continue;
2712                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2713                                 continue;
2714                         /* found dependent item -- just remove it */
2715                         list_del(&dep->list);
2716                         mutex_unlock(&local->mtx);
2717
2718                         ieee80211_roc_notify_destroy(dep, true);
2719                         return 0;
2720                 }
2721
2722                 if (!mgmt_tx && roc->cookie != cookie)
2723                         continue;
2724                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2725                         continue;
2726
2727                 found = roc;
2728                 break;
2729         }
2730
2731         if (!found) {
2732                 mutex_unlock(&local->mtx);
2733                 return -ENOENT;
2734         }
2735
2736         /*
2737          * We found the item to cancel, so do that. Note that it
2738          * may have dependents, which we also cancel (and send
2739          * the expired signal for.) Not doing so would be quite
2740          * tricky here, but we may need to fix it later.
2741          */
2742
2743         if (local->ops->remain_on_channel) {
2744                 if (found->started) {
2745                         ret = drv_cancel_remain_on_channel(local);
2746                         if (WARN_ON_ONCE(ret)) {
2747                                 mutex_unlock(&local->mtx);
2748                                 return ret;
2749                         }
2750                 }
2751
2752                 list_del(&found->list);
2753
2754                 if (found->started)
2755                         ieee80211_start_next_roc(local);
2756                 mutex_unlock(&local->mtx);
2757
2758                 ieee80211_roc_notify_destroy(found, true);
2759         } else {
2760                 /* work may be pending so use it all the time */
2761                 found->abort = true;
2762                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2763
2764                 mutex_unlock(&local->mtx);
2765
2766                 /* work will clean up etc */
2767                 flush_delayed_work(&found->work);
2768                 WARN_ON(!found->to_be_freed);
2769                 kfree(found);
2770         }
2771
2772         return 0;
2773 }
2774
2775 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2776                                               struct wireless_dev *wdev,
2777                                               u64 cookie)
2778 {
2779         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2780         struct ieee80211_local *local = sdata->local;
2781
2782         return ieee80211_cancel_roc(local, cookie, false);
2783 }
2784
2785 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2786                                            struct net_device *dev,
2787                                            struct cfg80211_chan_def *chandef,
2788                                            u32 cac_time_ms)
2789 {
2790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2791         struct ieee80211_local *local = sdata->local;
2792         int err;
2793
2794         mutex_lock(&local->mtx);
2795         if (!list_empty(&local->roc_list) || local->scanning) {
2796                 err = -EBUSY;
2797                 goto out_unlock;
2798         }
2799
2800         /* whatever, but channel contexts should not complain about that one */
2801         sdata->smps_mode = IEEE80211_SMPS_OFF;
2802         sdata->needed_rx_chains = local->rx_chains;
2803
2804         err = ieee80211_vif_use_channel(sdata, chandef,
2805                                         IEEE80211_CHANCTX_SHARED);
2806         if (err)
2807                 goto out_unlock;
2808
2809         ieee80211_queue_delayed_work(&sdata->local->hw,
2810                                      &sdata->dfs_cac_timer_work,
2811                                      msecs_to_jiffies(cac_time_ms));
2812
2813  out_unlock:
2814         mutex_unlock(&local->mtx);
2815         return err;
2816 }
2817
2818 static struct cfg80211_beacon_data *
2819 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2820 {
2821         struct cfg80211_beacon_data *new_beacon;
2822         u8 *pos;
2823         int len;
2824
2825         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2826               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2827               beacon->probe_resp_len;
2828
2829         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2830         if (!new_beacon)
2831                 return NULL;
2832
2833         pos = (u8 *)(new_beacon + 1);
2834         if (beacon->head_len) {
2835                 new_beacon->head_len = beacon->head_len;
2836                 new_beacon->head = pos;
2837                 memcpy(pos, beacon->head, beacon->head_len);
2838                 pos += beacon->head_len;
2839         }
2840         if (beacon->tail_len) {
2841                 new_beacon->tail_len = beacon->tail_len;
2842                 new_beacon->tail = pos;
2843                 memcpy(pos, beacon->tail, beacon->tail_len);
2844                 pos += beacon->tail_len;
2845         }
2846         if (beacon->beacon_ies_len) {
2847                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2848                 new_beacon->beacon_ies = pos;
2849                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2850                 pos += beacon->beacon_ies_len;
2851         }
2852         if (beacon->proberesp_ies_len) {
2853                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2854                 new_beacon->proberesp_ies = pos;
2855                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2856                 pos += beacon->proberesp_ies_len;
2857         }
2858         if (beacon->assocresp_ies_len) {
2859                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2860                 new_beacon->assocresp_ies = pos;
2861                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2862                 pos += beacon->assocresp_ies_len;
2863         }
2864         if (beacon->probe_resp_len) {
2865                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2866                 beacon->probe_resp = pos;
2867                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2868                 pos += beacon->probe_resp_len;
2869         }
2870
2871         return new_beacon;
2872 }
2873
2874 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2875 {
2876         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2877
2878         ieee80211_queue_work(&sdata->local->hw,
2879                              &sdata->csa_finalize_work);
2880 }
2881 EXPORT_SYMBOL(ieee80211_csa_finish);
2882
2883 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2884                                           u32 *changed)
2885 {
2886         int err;
2887
2888         switch (sdata->vif.type) {
2889         case NL80211_IFTYPE_AP:
2890                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2891                                               NULL);
2892                 kfree(sdata->u.ap.next_beacon);
2893                 sdata->u.ap.next_beacon = NULL;
2894
2895                 if (err < 0)
2896                         return err;
2897                 *changed |= err;
2898                 break;
2899         case NL80211_IFTYPE_ADHOC:
2900                 err = ieee80211_ibss_finish_csa(sdata);
2901                 if (err < 0)
2902                         return err;
2903                 *changed |= err;
2904                 break;
2905 #ifdef CONFIG_MAC80211_MESH
2906         case NL80211_IFTYPE_MESH_POINT:
2907                 err = ieee80211_mesh_finish_csa(sdata);
2908                 if (err < 0)
2909                         return err;
2910                 *changed |= err;
2911                 break;
2912 #endif
2913         default:
2914                 WARN_ON(1);
2915                 return -EINVAL;
2916         }
2917
2918         return 0;
2919 }
2920
2921 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2922 {
2923         struct ieee80211_local *local = sdata->local;
2924         u32 changed = 0;
2925         int err;
2926
2927         sdata_assert_lock(sdata);
2928         lockdep_assert_held(&local->mtx);
2929         lockdep_assert_held(&local->chanctx_mtx);
2930
2931         /*
2932          * using reservation isn't immediate as it may be deferred until later
2933          * with multi-vif. once reservation is complete it will re-schedule the
2934          * work with no reserved_chanctx so verify chandef to check if it
2935          * completed successfully
2936          */
2937
2938         if (sdata->reserved_chanctx) {
2939                 /*
2940                  * with multi-vif csa driver may call ieee80211_csa_finish()
2941                  * many times while waiting for other interfaces to use their
2942                  * reservations
2943                  */
2944                 if (sdata->reserved_ready)
2945                         return 0;
2946
2947                 return ieee80211_vif_use_reserved_context(sdata);
2948         }
2949
2950         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2951                                         &sdata->csa_chandef))
2952                 return -EINVAL;
2953
2954         sdata->vif.csa_active = false;
2955
2956         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2957         if (err)
2958                 return err;
2959
2960         ieee80211_bss_info_change_notify(sdata, changed);
2961
2962         if (sdata->csa_block_tx) {
2963                 ieee80211_wake_vif_queues(local, sdata,
2964                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2965                 sdata->csa_block_tx = false;
2966         }
2967
2968         err = drv_post_channel_switch(sdata);
2969         if (err)
2970                 return err;
2971
2972         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2973
2974         return 0;
2975 }
2976
2977 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2978 {
2979         if (__ieee80211_csa_finalize(sdata)) {
2980                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2981                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2982                                     GFP_KERNEL);
2983         }
2984 }
2985
2986 void ieee80211_csa_finalize_work(struct work_struct *work)
2987 {
2988         struct ieee80211_sub_if_data *sdata =
2989                 container_of(work, struct ieee80211_sub_if_data,
2990                              csa_finalize_work);
2991         struct ieee80211_local *local = sdata->local;
2992
2993         sdata_lock(sdata);
2994         mutex_lock(&local->mtx);
2995         mutex_lock(&local->chanctx_mtx);
2996
2997         /* AP might have been stopped while waiting for the lock. */
2998         if (!sdata->vif.csa_active)
2999                 goto unlock;
3000
3001         if (!ieee80211_sdata_running(sdata))
3002                 goto unlock;
3003
3004         ieee80211_csa_finalize(sdata);
3005
3006 unlock:
3007         mutex_unlock(&local->chanctx_mtx);
3008         mutex_unlock(&local->mtx);
3009         sdata_unlock(sdata);
3010 }
3011
3012 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3013                                     struct cfg80211_csa_settings *params,
3014                                     u32 *changed)
3015 {
3016         struct ieee80211_csa_settings csa = {};
3017         int err;
3018
3019         switch (sdata->vif.type) {
3020         case NL80211_IFTYPE_AP:
3021                 sdata->u.ap.next_beacon =
3022                         cfg80211_beacon_dup(&params->beacon_after);
3023                 if (!sdata->u.ap.next_beacon)
3024                         return -ENOMEM;
3025
3026                 /*
3027                  * With a count of 0, we don't have to wait for any
3028                  * TBTT before switching, so complete the CSA
3029                  * immediately.  In theory, with a count == 1 we
3030                  * should delay the switch until just before the next
3031                  * TBTT, but that would complicate things so we switch
3032                  * immediately too.  If we would delay the switch
3033                  * until the next TBTT, we would have to set the probe
3034                  * response here.
3035                  *
3036                  * TODO: A channel switch with count <= 1 without
3037                  * sending a CSA action frame is kind of useless,
3038                  * because the clients won't know we're changing
3039                  * channels.  The action frame must be implemented
3040                  * either here or in the userspace.
3041                  */
3042                 if (params->count <= 1)
3043                         break;
3044
3045                 if ((params->n_counter_offsets_beacon >
3046                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3047                     (params->n_counter_offsets_presp >
3048                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3049                         return -EINVAL;
3050
3051                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3052                 csa.counter_offsets_presp = params->counter_offsets_presp;
3053                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3054                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3055                 csa.count = params->count;
3056
3057                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3058                 if (err < 0) {
3059                         kfree(sdata->u.ap.next_beacon);
3060                         return err;
3061                 }
3062                 *changed |= err;
3063
3064                 break;
3065         case NL80211_IFTYPE_ADHOC:
3066                 if (!sdata->vif.bss_conf.ibss_joined)
3067                         return -EINVAL;
3068
3069                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3070                         return -EINVAL;
3071
3072                 switch (params->chandef.width) {
3073                 case NL80211_CHAN_WIDTH_40:
3074                         if (cfg80211_get_chandef_type(&params->chandef) !=
3075                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3076                                 return -EINVAL;
3077                 case NL80211_CHAN_WIDTH_5:
3078                 case NL80211_CHAN_WIDTH_10:
3079                 case NL80211_CHAN_WIDTH_20_NOHT:
3080                 case NL80211_CHAN_WIDTH_20:
3081                         break;
3082                 default:
3083                         return -EINVAL;
3084                 }
3085
3086                 /* changes into another band are not supported */
3087                 if (sdata->u.ibss.chandef.chan->band !=
3088                     params->chandef.chan->band)
3089                         return -EINVAL;
3090
3091                 /* see comments in the NL80211_IFTYPE_AP block */
3092                 if (params->count > 1) {
3093                         err = ieee80211_ibss_csa_beacon(sdata, params);
3094                         if (err < 0)
3095                                 return err;
3096                         *changed |= err;
3097                 }
3098
3099                 ieee80211_send_action_csa(sdata, params);
3100
3101                 break;
3102 #ifdef CONFIG_MAC80211_MESH
3103         case NL80211_IFTYPE_MESH_POINT: {
3104                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3105
3106                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3107                         return -EINVAL;
3108
3109                 /* changes into another band are not supported */
3110                 if (sdata->vif.bss_conf.chandef.chan->band !=
3111                     params->chandef.chan->band)
3112                         return -EINVAL;
3113
3114                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3115                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3116                         if (!ifmsh->pre_value)
3117                                 ifmsh->pre_value = 1;
3118                         else
3119                                 ifmsh->pre_value++;
3120                 }
3121
3122                 /* see comments in the NL80211_IFTYPE_AP block */
3123                 if (params->count > 1) {
3124                         err = ieee80211_mesh_csa_beacon(sdata, params);
3125                         if (err < 0) {
3126                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3127                                 return err;
3128                         }
3129                         *changed |= err;
3130                 }
3131
3132                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3133                         ieee80211_send_action_csa(sdata, params);
3134
3135                 break;
3136                 }
3137 #endif
3138         default:
3139                 return -EOPNOTSUPP;
3140         }
3141
3142         return 0;
3143 }
3144
3145 static int
3146 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3147                            struct cfg80211_csa_settings *params)
3148 {
3149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3150         struct ieee80211_local *local = sdata->local;
3151         struct ieee80211_channel_switch ch_switch;
3152         struct ieee80211_chanctx_conf *conf;
3153         struct ieee80211_chanctx *chanctx;
3154         u32 changed = 0;
3155         int err;
3156
3157         sdata_assert_lock(sdata);
3158         lockdep_assert_held(&local->mtx);
3159
3160         if (!list_empty(&local->roc_list) || local->scanning)
3161                 return -EBUSY;
3162
3163         if (sdata->wdev.cac_started)
3164                 return -EBUSY;
3165
3166         if (cfg80211_chandef_identical(&params->chandef,
3167                                        &sdata->vif.bss_conf.chandef))
3168                 return -EINVAL;
3169
3170         /* don't allow another channel switch if one is already active. */
3171         if (sdata->vif.csa_active)
3172                 return -EBUSY;
3173
3174         mutex_lock(&local->chanctx_mtx);
3175         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3176                                          lockdep_is_held(&local->chanctx_mtx));
3177         if (!conf) {
3178                 err = -EBUSY;
3179                 goto out;
3180         }
3181
3182         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3183         if (!chanctx) {
3184                 err = -EBUSY;
3185                 goto out;
3186         }
3187
3188         ch_switch.timestamp = 0;
3189         ch_switch.device_timestamp = 0;
3190         ch_switch.block_tx = params->block_tx;
3191         ch_switch.chandef = params->chandef;
3192         ch_switch.count = params->count;
3193
3194         err = drv_pre_channel_switch(sdata, &ch_switch);
3195         if (err)
3196                 goto out;
3197
3198         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3199                                             chanctx->mode,
3200                                             params->radar_required);
3201         if (err)
3202                 goto out;
3203
3204         /* if reservation is invalid then this will fail */
3205         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3206         if (err) {
3207                 ieee80211_vif_unreserve_chanctx(sdata);
3208                 goto out;
3209         }
3210
3211         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3212         if (err) {
3213                 ieee80211_vif_unreserve_chanctx(sdata);
3214                 goto out;
3215         }
3216
3217         sdata->csa_chandef = params->chandef;
3218         sdata->csa_block_tx = params->block_tx;
3219         sdata->vif.csa_active = true;
3220
3221         if (sdata->csa_block_tx)
3222                 ieee80211_stop_vif_queues(local, sdata,
3223                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3224
3225         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3226                                           params->count);
3227
3228         if (changed) {
3229                 ieee80211_bss_info_change_notify(sdata, changed);
3230                 drv_channel_switch_beacon(sdata, &params->chandef);
3231         } else {
3232                 /* if the beacon didn't change, we can finalize immediately */
3233                 ieee80211_csa_finalize(sdata);
3234         }
3235
3236 out:
3237         mutex_unlock(&local->chanctx_mtx);
3238         return err;
3239 }
3240
3241 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3242                              struct cfg80211_csa_settings *params)
3243 {
3244         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3245         struct ieee80211_local *local = sdata->local;
3246         int err;
3247
3248         mutex_lock(&local->mtx);
3249         err = __ieee80211_channel_switch(wiphy, dev, params);
3250         mutex_unlock(&local->mtx);
3251
3252         return err;
3253 }
3254
3255 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3256                                               struct sk_buff *skb, u64 *cookie,
3257                                               gfp_t gfp)
3258 {
3259         unsigned long spin_flags;
3260         struct sk_buff *ack_skb;
3261         int id;
3262
3263         ack_skb = skb_copy(skb, gfp);
3264         if (!ack_skb)
3265                 return ERR_PTR(-ENOMEM);
3266
3267         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3268         id = idr_alloc(&local->ack_status_frames, ack_skb,
3269                        1, 0x10000, GFP_ATOMIC);
3270         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3271
3272         if (id < 0) {
3273                 kfree_skb(ack_skb);
3274                 return ERR_PTR(-ENOMEM);
3275         }
3276
3277         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3278
3279         *cookie = ieee80211_mgmt_tx_cookie(local);
3280         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3281
3282         return ack_skb;
3283 }
3284
3285 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3286                              struct cfg80211_mgmt_tx_params *params,
3287                              u64 *cookie)
3288 {
3289         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3290         struct ieee80211_local *local = sdata->local;
3291         struct sk_buff *skb, *ack_skb;
3292         struct sta_info *sta;
3293         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3294         bool need_offchan = false;
3295         u32 flags;
3296         int ret;
3297         u8 *data;
3298
3299         if (params->dont_wait_for_ack)
3300                 flags = IEEE80211_TX_CTL_NO_ACK;
3301         else
3302                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3303                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3304
3305         if (params->no_cck)
3306                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3307
3308         switch (sdata->vif.type) {
3309         case NL80211_IFTYPE_ADHOC:
3310                 if (!sdata->vif.bss_conf.ibss_joined)
3311                         need_offchan = true;
3312                 /* fall through */
3313 #ifdef CONFIG_MAC80211_MESH
3314         case NL80211_IFTYPE_MESH_POINT:
3315                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3316                     !sdata->u.mesh.mesh_id_len)
3317                         need_offchan = true;
3318                 /* fall through */
3319 #endif
3320         case NL80211_IFTYPE_AP:
3321         case NL80211_IFTYPE_AP_VLAN:
3322         case NL80211_IFTYPE_P2P_GO:
3323                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3324                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3325                     !rcu_access_pointer(sdata->bss->beacon))
3326                         need_offchan = true;
3327                 if (!ieee80211_is_action(mgmt->frame_control) ||
3328                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3329                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3330                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3331                         break;
3332                 rcu_read_lock();
3333                 sta = sta_info_get(sdata, mgmt->da);
3334                 rcu_read_unlock();
3335                 if (!sta)
3336                         return -ENOLINK;
3337                 break;
3338         case NL80211_IFTYPE_STATION:
3339         case NL80211_IFTYPE_P2P_CLIENT:
3340                 sdata_lock(sdata);
3341                 if (!sdata->u.mgd.associated ||
3342                     (params->offchan && params->wait &&
3343                      local->ops->remain_on_channel &&
3344                      memcmp(sdata->u.mgd.associated->bssid,
3345                             mgmt->bssid, ETH_ALEN)))
3346                         need_offchan = true;
3347                 sdata_unlock(sdata);
3348                 break;
3349         case NL80211_IFTYPE_P2P_DEVICE:
3350                 need_offchan = true;
3351                 break;
3352         default:
3353                 return -EOPNOTSUPP;
3354         }
3355
3356         /* configurations requiring offchan cannot work if no channel has been
3357          * specified
3358          */
3359         if (need_offchan && !params->chan)
3360                 return -EINVAL;
3361
3362         mutex_lock(&local->mtx);
3363
3364         /* Check if the operating channel is the requested channel */
3365         if (!need_offchan) {
3366                 struct ieee80211_chanctx_conf *chanctx_conf;
3367
3368                 rcu_read_lock();
3369                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3370
3371                 if (chanctx_conf) {
3372                         need_offchan = params->chan &&
3373                                        (params->chan !=
3374                                         chanctx_conf->def.chan);
3375                 } else if (!params->chan) {
3376                         ret = -EINVAL;
3377                         rcu_read_unlock();
3378                         goto out_unlock;
3379                 } else {
3380                         need_offchan = true;
3381                 }
3382                 rcu_read_unlock();
3383         }
3384
3385         if (need_offchan && !params->offchan) {
3386                 ret = -EBUSY;
3387                 goto out_unlock;
3388         }
3389
3390         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3391         if (!skb) {
3392                 ret = -ENOMEM;
3393                 goto out_unlock;
3394         }
3395         skb_reserve(skb, local->hw.extra_tx_headroom);
3396
3397         data = skb_put(skb, params->len);
3398         memcpy(data, params->buf, params->len);
3399
3400         /* Update CSA counters */
3401         if (sdata->vif.csa_active &&
3402             (sdata->vif.type == NL80211_IFTYPE_AP ||
3403              sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3404              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3405             params->n_csa_offsets) {
3406                 int i;
3407                 struct beacon_data *beacon = NULL;
3408
3409                 rcu_read_lock();
3410
3411                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3412                         beacon = rcu_dereference(sdata->u.ap.beacon);
3413                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3414                         beacon = rcu_dereference(sdata->u.ibss.presp);
3415                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3416                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3417
3418                 if (beacon)
3419                         for (i = 0; i < params->n_csa_offsets; i++)
3420                                 data[params->csa_offsets[i]] =
3421                                         beacon->csa_current_counter;
3422
3423                 rcu_read_unlock();
3424         }
3425
3426         IEEE80211_SKB_CB(skb)->flags = flags;
3427
3428         skb->dev = sdata->dev;
3429
3430         if (!params->dont_wait_for_ack) {
3431                 /* make a copy to preserve the frame contents
3432                  * in case of encryption.
3433                  */
3434                 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3435                                                  GFP_KERNEL);
3436                 if (IS_ERR(ack_skb)) {
3437                         ret = PTR_ERR(ack_skb);
3438                         kfree_skb(skb);
3439                         goto out_unlock;
3440                 }
3441         } else {
3442                 /* for cookie below */
3443                 ack_skb = skb;
3444         }
3445
3446         if (!need_offchan) {
3447                 ieee80211_tx_skb(sdata, skb);
3448                 ret = 0;
3449                 goto out_unlock;
3450         }
3451
3452         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3453                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3454         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3455                 IEEE80211_SKB_CB(skb)->hw_queue =
3456                         local->hw.offchannel_tx_hw_queue;
3457
3458         /* This will handle all kinds of coalescing and immediate TX */
3459         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3460                                        params->wait, cookie, skb,
3461                                        IEEE80211_ROC_TYPE_MGMT_TX);
3462         if (ret)
3463                 kfree_skb(skb);
3464  out_unlock:
3465         mutex_unlock(&local->mtx);
3466         return ret;
3467 }
3468
3469 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3470                                          struct wireless_dev *wdev,
3471                                          u64 cookie)
3472 {
3473         struct ieee80211_local *local = wiphy_priv(wiphy);
3474
3475         return ieee80211_cancel_roc(local, cookie, true);
3476 }
3477
3478 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3479                                           struct wireless_dev *wdev,
3480                                           u16 frame_type, bool reg)
3481 {
3482         struct ieee80211_local *local = wiphy_priv(wiphy);
3483
3484         switch (frame_type) {
3485         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3486                 if (reg)
3487                         local->probe_req_reg++;
3488                 else
3489                         local->probe_req_reg--;
3490
3491                 if (!local->open_count)
3492                         break;
3493
3494                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3495                 break;
3496         default:
3497                 break;
3498         }
3499 }
3500
3501 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3502 {
3503         struct ieee80211_local *local = wiphy_priv(wiphy);
3504
3505         if (local->started)
3506                 return -EOPNOTSUPP;
3507
3508         return drv_set_antenna(local, tx_ant, rx_ant);
3509 }
3510
3511 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3512 {
3513         struct ieee80211_local *local = wiphy_priv(wiphy);
3514
3515         return drv_get_antenna(local, tx_ant, rx_ant);
3516 }
3517
3518 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3519                                     struct net_device *dev,
3520                                     struct cfg80211_gtk_rekey_data *data)
3521 {
3522         struct ieee80211_local *local = wiphy_priv(wiphy);
3523         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3524
3525         if (!local->ops->set_rekey_data)
3526                 return -EOPNOTSUPP;
3527
3528         drv_set_rekey_data(local, sdata, data);
3529
3530         return 0;
3531 }
3532
3533 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3534                                   const u8 *peer, u64 *cookie)
3535 {
3536         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3537         struct ieee80211_local *local = sdata->local;
3538         struct ieee80211_qos_hdr *nullfunc;
3539         struct sk_buff *skb, *ack_skb;
3540         int size = sizeof(*nullfunc);
3541         __le16 fc;
3542         bool qos;
3543         struct ieee80211_tx_info *info;
3544         struct sta_info *sta;
3545         struct ieee80211_chanctx_conf *chanctx_conf;
3546         enum ieee80211_band band;
3547         int ret;
3548
3549         /* the lock is needed to assign the cookie later */
3550         mutex_lock(&local->mtx);
3551
3552         rcu_read_lock();
3553         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3554         if (WARN_ON(!chanctx_conf)) {
3555                 ret = -EINVAL;
3556                 goto unlock;
3557         }
3558         band = chanctx_conf->def.chan->band;
3559         sta = sta_info_get_bss(sdata, peer);
3560         if (sta) {
3561                 qos = sta->sta.wme;
3562         } else {
3563                 ret = -ENOLINK;
3564                 goto unlock;
3565         }
3566
3567         if (qos) {
3568                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3569                                  IEEE80211_STYPE_QOS_NULLFUNC |
3570                                  IEEE80211_FCTL_FROMDS);
3571         } else {
3572                 size -= 2;
3573                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3574                                  IEEE80211_STYPE_NULLFUNC |
3575                                  IEEE80211_FCTL_FROMDS);
3576         }
3577
3578         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3579         if (!skb) {
3580                 ret = -ENOMEM;
3581                 goto unlock;
3582         }
3583
3584         skb->dev = dev;
3585
3586         skb_reserve(skb, local->hw.extra_tx_headroom);
3587
3588         nullfunc = (void *) skb_put(skb, size);
3589         nullfunc->frame_control = fc;
3590         nullfunc->duration_id = 0;
3591         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3592         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3593         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3594         nullfunc->seq_ctrl = 0;
3595
3596         info = IEEE80211_SKB_CB(skb);
3597
3598         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3599                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3600         info->band = band;
3601
3602         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3603         skb->priority = 7;
3604         if (qos)
3605                 nullfunc->qos_ctrl = cpu_to_le16(7);
3606
3607         ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3608         if (IS_ERR(ack_skb)) {
3609                 kfree_skb(skb);
3610                 ret = PTR_ERR(ack_skb);
3611                 goto unlock;
3612         }
3613
3614         local_bh_disable();
3615         ieee80211_xmit(sdata, sta, skb);
3616         local_bh_enable();
3617
3618         ret = 0;
3619 unlock:
3620         rcu_read_unlock();
3621         mutex_unlock(&local->mtx);
3622
3623         return ret;
3624 }
3625
3626 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3627                                      struct wireless_dev *wdev,
3628                                      struct cfg80211_chan_def *chandef)
3629 {
3630         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3631         struct ieee80211_local *local = wiphy_priv(wiphy);
3632         struct ieee80211_chanctx_conf *chanctx_conf;
3633         int ret = -ENODATA;
3634
3635         rcu_read_lock();
3636         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3637         if (chanctx_conf) {
3638                 *chandef = sdata->vif.bss_conf.chandef;
3639                 ret = 0;
3640         } else if (local->open_count > 0 &&
3641                    local->open_count == local->monitors &&
3642                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3643                 if (local->use_chanctx)
3644                         *chandef = local->monitor_chandef;
3645                 else
3646                         *chandef = local->_oper_chandef;
3647                 ret = 0;
3648         }
3649         rcu_read_unlock();
3650
3651         return ret;
3652 }
3653
3654 #ifdef CONFIG_PM
3655 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3656 {
3657         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3658 }
3659 #endif
3660
3661 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3662                                  struct net_device *dev,
3663                                  struct cfg80211_qos_map *qos_map)
3664 {
3665         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3666         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3667
3668         if (qos_map) {
3669                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3670                 if (!new_qos_map)
3671                         return -ENOMEM;
3672                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3673         } else {
3674                 /* A NULL qos_map was passed to disable QoS mapping */
3675                 new_qos_map = NULL;
3676         }
3677
3678         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3679         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3680         if (old_qos_map)
3681                 kfree_rcu(old_qos_map, rcu_head);
3682
3683         return 0;
3684 }
3685
3686 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3687                                       struct net_device *dev,
3688                                       struct cfg80211_chan_def *chandef)
3689 {
3690         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3691         int ret;
3692         u32 changed = 0;
3693
3694         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3695         if (ret == 0)
3696                 ieee80211_bss_info_change_notify(sdata, changed);
3697
3698         return ret;
3699 }
3700
3701 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3702                                u8 tsid, const u8 *peer, u8 up,
3703                                u16 admitted_time)
3704 {
3705         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3706         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3707         int ac = ieee802_1d_to_ac[up];
3708
3709         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3710                 return -EOPNOTSUPP;
3711
3712         if (!(sdata->wmm_acm & BIT(up)))
3713                 return -EINVAL;
3714
3715         if (ifmgd->tx_tspec[ac].admitted_time)
3716                 return -EBUSY;
3717
3718         if (admitted_time) {
3719                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3720                 ifmgd->tx_tspec[ac].tsid = tsid;
3721                 ifmgd->tx_tspec[ac].up = up;
3722         }
3723
3724         return 0;
3725 }
3726
3727 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3728                                u8 tsid, const u8 *peer)
3729 {
3730         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3731         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3732         struct ieee80211_local *local = wiphy_priv(wiphy);
3733         int ac;
3734
3735         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3736                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3737
3738                 /* skip unused entries */
3739                 if (!tx_tspec->admitted_time)
3740                         continue;
3741
3742                 if (tx_tspec->tsid != tsid)
3743                         continue;
3744
3745                 /* due to this new packets will be reassigned to non-ACM ACs */
3746                 tx_tspec->up = -1;
3747
3748                 /* Make sure that all packets have been sent to avoid to
3749                  * restore the QoS params on packets that are still on the
3750                  * queues.
3751                  */
3752                 synchronize_net();
3753                 ieee80211_flush_queues(local, sdata, false);
3754
3755                 /* restore the normal QoS parameters
3756                  * (unconditionally to avoid races)
3757                  */
3758                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3759                 tx_tspec->downgraded = false;
3760                 ieee80211_sta_handle_tspec_ac_params(sdata);
3761
3762                 /* finally clear all the data */
3763                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3764
3765                 return 0;
3766         }
3767
3768         return -ENOENT;
3769 }
3770
3771 const struct cfg80211_ops mac80211_config_ops = {
3772         .add_virtual_intf = ieee80211_add_iface,
3773         .del_virtual_intf = ieee80211_del_iface,
3774         .change_virtual_intf = ieee80211_change_iface,
3775         .start_p2p_device = ieee80211_start_p2p_device,
3776         .stop_p2p_device = ieee80211_stop_p2p_device,
3777         .add_key = ieee80211_add_key,
3778         .del_key = ieee80211_del_key,
3779         .get_key = ieee80211_get_key,
3780         .set_default_key = ieee80211_config_default_key,
3781         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3782         .start_ap = ieee80211_start_ap,
3783         .change_beacon = ieee80211_change_beacon,
3784         .stop_ap = ieee80211_stop_ap,
3785         .add_station = ieee80211_add_station,
3786         .del_station = ieee80211_del_station,
3787         .change_station = ieee80211_change_station,
3788         .get_station = ieee80211_get_station,
3789         .dump_station = ieee80211_dump_station,
3790         .dump_survey = ieee80211_dump_survey,
3791 #ifdef CONFIG_MAC80211_MESH
3792         .add_mpath = ieee80211_add_mpath,
3793         .del_mpath = ieee80211_del_mpath,
3794         .change_mpath = ieee80211_change_mpath,
3795         .get_mpath = ieee80211_get_mpath,
3796         .dump_mpath = ieee80211_dump_mpath,
3797         .get_mpp = ieee80211_get_mpp,
3798         .dump_mpp = ieee80211_dump_mpp,
3799         .update_mesh_config = ieee80211_update_mesh_config,
3800         .get_mesh_config = ieee80211_get_mesh_config,
3801         .join_mesh = ieee80211_join_mesh,
3802         .leave_mesh = ieee80211_leave_mesh,
3803 #endif
3804         .join_ocb = ieee80211_join_ocb,
3805         .leave_ocb = ieee80211_leave_ocb,
3806         .change_bss = ieee80211_change_bss,
3807         .set_txq_params = ieee80211_set_txq_params,
3808         .set_monitor_channel = ieee80211_set_monitor_channel,
3809         .suspend = ieee80211_suspend,
3810         .resume = ieee80211_resume,
3811         .scan = ieee80211_scan,
3812         .sched_scan_start = ieee80211_sched_scan_start,
3813         .sched_scan_stop = ieee80211_sched_scan_stop,
3814         .auth = ieee80211_auth,
3815         .assoc = ieee80211_assoc,
3816         .deauth = ieee80211_deauth,
3817         .disassoc = ieee80211_disassoc,
3818         .join_ibss = ieee80211_join_ibss,
3819         .leave_ibss = ieee80211_leave_ibss,
3820         .set_mcast_rate = ieee80211_set_mcast_rate,
3821         .set_wiphy_params = ieee80211_set_wiphy_params,
3822         .set_tx_power = ieee80211_set_tx_power,
3823         .get_tx_power = ieee80211_get_tx_power,
3824         .set_wds_peer = ieee80211_set_wds_peer,
3825         .rfkill_poll = ieee80211_rfkill_poll,
3826         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3827         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3828         .set_power_mgmt = ieee80211_set_power_mgmt,
3829         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3830         .remain_on_channel = ieee80211_remain_on_channel,
3831         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3832         .mgmt_tx = ieee80211_mgmt_tx,
3833         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3834         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3835         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3836         .set_antenna = ieee80211_set_antenna,
3837         .get_antenna = ieee80211_get_antenna,
3838         .set_rekey_data = ieee80211_set_rekey_data,
3839         .tdls_oper = ieee80211_tdls_oper,
3840         .tdls_mgmt = ieee80211_tdls_mgmt,
3841         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3842         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3843         .probe_client = ieee80211_probe_client,
3844         .set_noack_map = ieee80211_set_noack_map,
3845 #ifdef CONFIG_PM
3846         .set_wakeup = ieee80211_set_wakeup,
3847 #endif
3848         .get_channel = ieee80211_cfg_get_channel,
3849         .start_radar_detection = ieee80211_start_radar_detection,
3850         .channel_switch = ieee80211_channel_switch,
3851         .set_qos_map = ieee80211_set_qos_map,
3852         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3853         .add_tx_ts = ieee80211_add_tx_ts,
3854         .del_tx_ts = ieee80211_del_tx_ts,
3855 };