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 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 473                                   int idx, u8 *mac, struct station_info *sinfo)
 474 {
 475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 476         struct ieee80211_local *local = sdata->local;
 477         struct sta_info *sta;
 478         int ret = -ENOENT;
 479
 480         mutex_lock(&local->sta_mtx);
 481
 482         sta = sta_info_get_by_idx(sdata, idx);
 483         if (sta) {
 484                 ret = 0;
 485                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 486                 sta_set_sinfo(sta, sinfo);
 487         }
 488
 489         mutex_unlock(&local->sta_mtx);
 490
 491         return ret;
 492 }
 493
 494 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 495                                  int idx, struct survey_info *survey)
 496 {
 497         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 498
 499         return drv_get_survey(local, idx, survey);
 500 }
 501
 502 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 503                                  const u8 *mac, struct station_info *sinfo)
 504 {
 505         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 506         struct ieee80211_local *local = sdata->local;
 507         struct sta_info *sta;
 508         int ret = -ENOENT;
 509
 510         mutex_lock(&local->sta_mtx);
 511
 512         sta = sta_info_get_bss(sdata, mac);
 513         if (sta) {
 514                 ret = 0;
 515                 sta_set_sinfo(sta, sinfo);
 516         }
 517
 518         mutex_unlock(&local->sta_mtx);
 519
 520         return ret;
 521 }
 522
 523 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 524                                          struct cfg80211_chan_def *chandef)
 525 {
 526         struct ieee80211_local *local = wiphy_priv(wiphy);
 527         struct ieee80211_sub_if_data *sdata;
 528         int ret = 0;
 529
 530         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 531                 return 0;
 532
 533         mutex_lock(&local->mtx);
 534         mutex_lock(&local->iflist_mtx);
 535         if (local->use_chanctx) {
 536                 sdata = rcu_dereference_protected(
 537                                 local->monitor_sdata,
 538                                 lockdep_is_held(&local->iflist_mtx));
 539                 if (sdata) {
 540                         ieee80211_vif_release_channel(sdata);
 541                         ret = ieee80211_vif_use_channel(sdata, chandef,
 542                                         IEEE80211_CHANCTX_EXCLUSIVE);
 543                 }
 544         } else if (local->open_count == local->monitors) {
 545                 local->_oper_chandef = *chandef;
 546                 ieee80211_hw_config(local, 0);
 547         }
 548
 549         if (ret == 0)
 550                 local->monitor_chandef = *chandef;
 551         mutex_unlock(&local->iflist_mtx);
 552         mutex_unlock(&local->mtx);
 553
 554         return ret;
 555 }
 556
 557 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 558                                     const u8 *resp, size_t resp_len,
 559                                     const struct ieee80211_csa_settings *csa)
 560 {
 561         struct probe_resp *new, *old;
 562
 563         if (!resp || !resp_len)
 564                 return 1;
 565
 566         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 567
 568         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 569         if (!new)
 570                 return -ENOMEM;
 571
 572         new->len = resp_len;
 573         memcpy(new->data, resp, resp_len);
 574
 575         if (csa)
 576                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 577                        csa->n_counter_offsets_presp *
 578                        sizeof(new->csa_counter_offsets[0]));
 579
 580         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 581         if (old)
 582                 kfree_rcu(old, rcu_head);
 583
 584         return 0;
 585 }
 586
 587 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 588                                    struct cfg80211_beacon_data *params,
 589                                    const struct ieee80211_csa_settings *csa)
 590 {
 591         struct beacon_data *new, *old;
 592         int new_head_len, new_tail_len;
 593         int size, err;
 594         u32 changed = BSS_CHANGED_BEACON;
 595
 596         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 597
 598
 599         /* Need to have a beacon head if we don't have one yet */
 600         if (!params->head && !old)
 601                 return -EINVAL;
 602
 603         /* new or old head? */
 604         if (params->head)
 605                 new_head_len = params->head_len;
 606         else
 607                 new_head_len = old->head_len;
 608
 609         /* new or old tail? */
 610         if (params->tail || !old)
 611                 /* params->tail_len will be zero for !params->tail */
 612                 new_tail_len = params->tail_len;
 613         else
 614                 new_tail_len = old->tail_len;
 615
 616         size = sizeof(*new) + new_head_len + new_tail_len;
 617
 618         new = kzalloc(size, GFP_KERNEL);
 619         if (!new)
 620                 return -ENOMEM;
 621
 622         /* start filling the new info now */
 623
 624         /*
 625          * pointers go into the block we allocated,
 626          * memory is | beacon_data | head | tail |
 627          */
 628         new->head = ((u8 *) new) + sizeof(*new);
 629         new->tail = new->head + new_head_len;
 630         new->head_len = new_head_len;
 631         new->tail_len = new_tail_len;
 632
 633         if (csa) {
 634                 new->csa_current_counter = csa->count;
 635                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 636                        csa->n_counter_offsets_beacon *
 637                        sizeof(new->csa_counter_offsets[0]));
 638         }
 639
 640         /* copy in head */
 641         if (params->head)
 642                 memcpy(new->head, params->head, new_head_len);
 643         else
 644                 memcpy(new->head, old->head, new_head_len);
 645
 646         /* copy in optional tail */
 647         if (params->tail)
 648                 memcpy(new->tail, params->tail, new_tail_len);
 649         else
 650                 if (old)
 651                         memcpy(new->tail, old->tail, new_tail_len);
 652
 653         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 654                                        params->probe_resp_len, csa);
 655         if (err < 0)
 656                 return err;
 657         if (err == 0)
 658                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 659
 660         rcu_assign_pointer(sdata->u.ap.beacon, new);
 661
 662         if (old)
 663                 kfree_rcu(old, rcu_head);
 664
 665         return changed;
 666 }
 667
 668 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 669                               struct cfg80211_ap_settings *params)
 670 {
 671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 672         struct ieee80211_local *local = sdata->local;
 673         struct beacon_data *old;
 674         struct ieee80211_sub_if_data *vlan;
 675         u32 changed = BSS_CHANGED_BEACON_INT |
 676                       BSS_CHANGED_BEACON_ENABLED |
 677                       BSS_CHANGED_BEACON |
 678                       BSS_CHANGED_SSID |
 679                       BSS_CHANGED_P2P_PS |
 680                       BSS_CHANGED_TXPOWER;
 681         int err;
 682
 683         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 684         if (old)
 685                 return -EALREADY;
 686
 687         switch (params->smps_mode) {
 688         case NL80211_SMPS_OFF:
 689                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 690                 break;
 691         case NL80211_SMPS_STATIC:
 692                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 693                 break;
 694         case NL80211_SMPS_DYNAMIC:
 695                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 696                 break;
 697         default:
 698                 return -EINVAL;
 699         }
 700         sdata->needed_rx_chains = sdata->local->rx_chains;
 701
 702         mutex_lock(&local->mtx);
 703         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 704                                         IEEE80211_CHANCTX_SHARED);
 705         if (!err)
 706                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 707         mutex_unlock(&local->mtx);
 708         if (err)
 709                 return err;
 710
 711         /*
 712          * Apply control port protocol, this allows us to
 713          * not encrypt dynamic WEP control frames.
 714          */
 715         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 716         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 717         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 718                                                         &params->crypto,
 719                                                         sdata->vif.type);
 720
 721         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 722                 vlan->control_port_protocol =
 723                         params->crypto.control_port_ethertype;
 724                 vlan->control_port_no_encrypt =
 725                         params->crypto.control_port_no_encrypt;
 726                 vlan->encrypt_headroom =
 727                         ieee80211_cs_headroom(sdata->local,
 728                                               &params->crypto,
 729                                               vlan->vif.type);
 730         }
 731
 732         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 733         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 734         sdata->vif.bss_conf.enable_beacon = true;
 735
 736         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 737         if (params->ssid_len)
 738                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 739                        params->ssid_len);
 740         sdata->vif.bss_conf.hidden_ssid =
 741                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 742
 743         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 744                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 745         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 746                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 747         if (params->p2p_opp_ps)
 748                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 749                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 750
 751         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 752         if (err < 0) {
 753                 ieee80211_vif_release_channel(sdata);
 754                 return err;
 755         }
 756         changed |= err;
 757
 758         err = drv_start_ap(sdata->local, sdata);
 759         if (err) {
 760                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 761
 762                 if (old)
 763                         kfree_rcu(old, rcu_head);
 764                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 765                 ieee80211_vif_release_channel(sdata);
 766                 return err;
 767         }
 768
 769         ieee80211_recalc_dtim(local, sdata);
 770         ieee80211_bss_info_change_notify(sdata, changed);
 771
 772         netif_carrier_on(dev);
 773         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 774                 netif_carrier_on(vlan->dev);
 775
 776         return 0;
 777 }
 778
 779 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 780                                    struct cfg80211_beacon_data *params)
 781 {
 782         struct ieee80211_sub_if_data *sdata;
 783         struct beacon_data *old;
 784         int err;
 785
 786         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 787         sdata_assert_lock(sdata);
 788
 789         /* don't allow changing the beacon while CSA is in place - offset
 790          * of channel switch counter may change
 791          */
 792         if (sdata->vif.csa_active)
 793                 return -EBUSY;
 794
 795         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 796         if (!old)
 797                 return -ENOENT;
 798
 799         err = ieee80211_assign_beacon(sdata, params, NULL);
 800         if (err < 0)
 801                 return err;
 802         ieee80211_bss_info_change_notify(sdata, err);
 803         return 0;
 804 }
 805
 806 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 807 {
 808         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 809         struct ieee80211_sub_if_data *vlan;
 810         struct ieee80211_local *local = sdata->local;
 811         struct beacon_data *old_beacon;
 812         struct probe_resp *old_probe_resp;
 813         struct cfg80211_chan_def chandef;
 814
 815         sdata_assert_lock(sdata);
 816
 817         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 818         if (!old_beacon)
 819                 return -ENOENT;
 820         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 821
 822         /* abort any running channel switch */
 823         mutex_lock(&local->mtx);
 824         sdata->vif.csa_active = false;
 825         if (sdata->csa_block_tx) {
 826                 ieee80211_wake_vif_queues(local, sdata,
 827                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 828                 sdata->csa_block_tx = false;
 829         }
 830
 831         mutex_unlock(&local->mtx);
 832
 833         kfree(sdata->u.ap.next_beacon);
 834         sdata->u.ap.next_beacon = NULL;
 835
 836         /* turn off carrier for this interface and dependent VLANs */
 837         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 838                 netif_carrier_off(vlan->dev);
 839         netif_carrier_off(dev);
 840
 841         /* remove beacon and probe response */
 842         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 843         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 844         kfree_rcu(old_beacon, rcu_head);
 845         if (old_probe_resp)
 846                 kfree_rcu(old_probe_resp, rcu_head);
 847         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 848
 849         __sta_info_flush(sdata, true);
 850         ieee80211_free_keys(sdata, true);
 851
 852         sdata->vif.bss_conf.enable_beacon = false;
 853         sdata->vif.bss_conf.ssid_len = 0;
 854         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 855         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 856
 857         if (sdata->wdev.cac_started) {
 858                 chandef = sdata->vif.bss_conf.chandef;
 859                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 860                 cfg80211_cac_event(sdata->dev, &chandef,
 861                                    NL80211_RADAR_CAC_ABORTED,
 862                                    GFP_KERNEL);
 863         }
 864
 865         drv_stop_ap(sdata->local, sdata);
 866
 867         /* free all potentially still buffered bcast frames */
 868         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 869         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 870
 871         mutex_lock(&local->mtx);
 872         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 873         ieee80211_vif_release_channel(sdata);
 874         mutex_unlock(&local->mtx);
 875
 876         return 0;
 877 }
 878
 879 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 880 struct iapp_layer2_update {
 881         u8 da[ETH_ALEN];        /* broadcast */
 882         u8 sa[ETH_ALEN];        /* STA addr */
 883         __be16 len;             /* 6 */
 884         u8 dsap;                /* 0 */
 885         u8 ssap;                /* 0 */
 886         u8 control;
 887         u8 xid_info[3];
 888 } __packed;
 889
 890 static void ieee80211_send_layer2_update(struct sta_info *sta)
 891 {
 892         struct iapp_layer2_update *msg;
 893         struct sk_buff *skb;
 894
 895         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 896          * bridge devices */
 897
 898         skb = dev_alloc_skb(sizeof(*msg));
 899         if (!skb)
 900                 return;
 901         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 902
 903         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 904          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 905
 906         eth_broadcast_addr(msg->da);
 907         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 908         msg->len = htons(6);
 909         msg->dsap = 0;
 910         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 911         msg->control = 0xaf;    /* XID response lsb.1111F101.
 912                                  * F=0 (no poll command; unsolicited frame) */
 913         msg->xid_info[0] = 0x81;        /* XID format identifier */
 914         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 915         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 916
 917         skb->dev = sta->sdata->dev;
 918         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 919         memset(skb->cb, 0, sizeof(skb->cb));
 920         netif_rx_ni(skb);
 921 }
 922
 923 static int sta_apply_auth_flags(struct ieee80211_local *local,
 924                                 struct sta_info *sta,
 925                                 u32 mask, u32 set)
 926 {
 927         int ret;
 928
 929         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 931             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 932                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 933                 if (ret)
 934                         return ret;
 935         }
 936
 937         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 939             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 940                 /*
 941                  * When peer becomes associated, init rate control as
 942                  * well. Some drivers require rate control initialized
 943                  * before drv_sta_state() is called.
 944                  */
 945                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 946                         rate_control_rate_init(sta);
 947
 948                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 949                 if (ret)
 950                         return ret;
 951         }
 952
 953         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 954                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 955                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 956                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 957                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 958                 else
 959                         ret = 0;
 960                 if (ret)
 961                         return ret;
 962         }
 963
 964         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 965             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 966             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 967                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 968                 if (ret)
 969                         return ret;
 970         }
 971
 972         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 973             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 974             test_sta_flag(sta, WLAN_STA_AUTH)) {
 975                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 976                 if (ret)
 977                         return ret;
 978         }
 979
 980         return 0;
 981 }
 982
 983 static void sta_apply_mesh_params(struct ieee80211_local *local,
 984                                   struct sta_info *sta,
 985                                   struct station_parameters *params)
 986 {
 987 #ifdef CONFIG_MAC80211_MESH
 988         struct ieee80211_sub_if_data *sdata = sta->sdata;
 989         u32 changed = 0;
 990
 991         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
 992                 switch (params->plink_state) {
 993                 case NL80211_PLINK_ESTAB:
 994                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
 995                                 changed = mesh_plink_inc_estab_count(sdata);
 996                         sta->mesh->plink_state = params->plink_state;
 997
 998                         ieee80211_mps_sta_status_update(sta);
 999                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1000                                       sdata->u.mesh.mshcfg.power_mode);
1001                         break;
1002                 case NL80211_PLINK_LISTEN:
1003                 case NL80211_PLINK_BLOCKED:
1004                 case NL80211_PLINK_OPN_SNT:
1005                 case NL80211_PLINK_OPN_RCVD:
1006                 case NL80211_PLINK_CNF_RCVD:
1007                 case NL80211_PLINK_HOLDING:
1008                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1009                                 changed = mesh_plink_dec_estab_count(sdata);
1010                         sta->mesh->plink_state = params->plink_state;
1011
1012                         ieee80211_mps_sta_status_update(sta);
1013                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1014                                         NL80211_MESH_POWER_UNKNOWN);
1015                         break;
1016                 default:
1017                         /*  nothing  */
1018                         break;
1019                 }
1020         }
1021
1022         switch (params->plink_action) {
1023         case NL80211_PLINK_ACTION_NO_ACTION:
1024                 /* nothing */
1025                 break;
1026         case NL80211_PLINK_ACTION_OPEN:
1027                 changed |= mesh_plink_open(sta);
1028                 break;
1029         case NL80211_PLINK_ACTION_BLOCK:
1030                 changed |= mesh_plink_block(sta);
1031                 break;
1032         }
1033
1034         if (params->local_pm)
1035                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1036                                                           params->local_pm);
1037
1038         ieee80211_mbss_info_change_notify(sdata, changed);
1039 #endif
1040 }
1041
1042 static int sta_apply_parameters(struct ieee80211_local *local,
1043                                 struct sta_info *sta,
1044                                 struct station_parameters *params)
1045 {
1046         int ret = 0;
1047         struct ieee80211_supported_band *sband;
1048         struct ieee80211_sub_if_data *sdata = sta->sdata;
1049         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1050         u32 mask, set;
1051
1052         sband = local->hw.wiphy->bands[band];
1053
1054         mask = params->sta_flags_mask;
1055         set = params->sta_flags_set;
1056
1057         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1058                 /*
1059                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1060                  * API but must follow AUTHENTICATED for driver state.
1061                  */
1062                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1063                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1064                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1065                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1066         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1067                 /*
1068                  * TDLS -- everything follows authorized, but
1069                  * only becoming authorized is possible, not
1070                  * going back
1071                  */
1072                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1073                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1074                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1075                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1076                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1077                 }
1078         }
1079
1080         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1081             local->hw.queues >= IEEE80211_NUM_ACS)
1082                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1083
1084         /* auth flags will be set later for TDLS,
1085          * and for unassociated stations that move to assocaited */
1086         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1087             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1088               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1089                 ret = sta_apply_auth_flags(local, sta, mask, set);
1090                 if (ret)
1091                         return ret;
1092         }
1093
1094         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1095                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1096                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1097                 else
1098                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1099         }
1100
1101         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1102                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1103                 if (set & BIT(NL80211_STA_FLAG_MFP))
1104                         set_sta_flag(sta, WLAN_STA_MFP);
1105                 else
1106                         clear_sta_flag(sta, WLAN_STA_MFP);
1107         }
1108
1109         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1110                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1111                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1112                 else
1113                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1114         }
1115
1116         /* mark TDLS channel switch support, if the AP allows it */
1117         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1118             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1119             params->ext_capab_len >= 4 &&
1120             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1121                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1122
1123         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1124             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1125             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1126             params->ext_capab_len >= 8 &&
1127             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1128                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1129
1130         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1131                 sta->sta.uapsd_queues = params->uapsd_queues;
1132                 sta->sta.max_sp = params->max_sp;
1133         }
1134
1135         /*
1136          * cfg80211 validates this (1-2007) and allows setting the AID
1137          * only when creating a new station entry
1138          */
1139         if (params->aid)
1140                 sta->sta.aid = params->aid;
1141
1142         /*
1143          * Some of the following updates would be racy if called on an
1144          * existing station, via ieee80211_change_station(). However,
1145          * all such changes are rejected by cfg80211 except for updates
1146          * changing the supported rates on an existing but not yet used
1147          * TDLS peer.
1148          */
1149
1150         if (params->listen_interval >= 0)
1151                 sta->listen_interval = params->listen_interval;
1152
1153         if (params->supported_rates) {
1154                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1155                                          sband, params->supported_rates,
1156                                          params->supported_rates_len,
1157                                          &sta->sta.supp_rates[band]);
1158         }
1159
1160         if (params->ht_capa)
1161                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1162                                                   params->ht_capa, sta);
1163
1164         if (params->vht_capa)
1165                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1166                                                     params->vht_capa, sta);
1167
1168         if (params->opmode_notif_used) {
1169                 /* returned value is only needed for rc update, but the
1170                  * rc isn't initialized here yet, so ignore it
1171                  */
1172                 __ieee80211_vht_handle_opmode(sdata, sta,
1173                                               params->opmode_notif,
1174                                               band, false);
1175         }
1176
1177         if (ieee80211_vif_is_mesh(&sdata->vif))
1178                 sta_apply_mesh_params(local, sta, params);
1179
1180         /* set the STA state after all sta info from usermode has been set */
1181         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1182             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1183                 ret = sta_apply_auth_flags(local, sta, mask, set);
1184                 if (ret)
1185                         return ret;
1186         }
1187
1188         return 0;
1189 }
1190
1191 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1192                                  const u8 *mac,
1193                                  struct station_parameters *params)
1194 {
1195         struct ieee80211_local *local = wiphy_priv(wiphy);
1196         struct sta_info *sta;
1197         struct ieee80211_sub_if_data *sdata;
1198         int err;
1199         int layer2_update;
1200
1201         if (params->vlan) {
1202                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1203
1204                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1205                     sdata->vif.type != NL80211_IFTYPE_AP)
1206                         return -EINVAL;
1207         } else
1208                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1209
1210         if (ether_addr_equal(mac, sdata->vif.addr))
1211                 return -EINVAL;
1212
1213         if (is_multicast_ether_addr(mac))
1214                 return -EINVAL;
1215
1216         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1217         if (!sta)
1218                 return -ENOMEM;
1219
1220         /*
1221          * defaults -- if userspace wants something else we'll
1222          * change it accordingly in sta_apply_parameters()
1223          */
1224         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1225             !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1226                                         BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1227                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1228                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1229         }
1230         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1231                 sta->sta.tdls = true;
1232
1233         err = sta_apply_parameters(local, sta, params);
1234         if (err) {
1235                 sta_info_free(local, sta);
1236                 return err;
1237         }
1238
1239         /*
1240          * for TDLS and for unassociated station, rate control should be
1241          * initialized only when rates are known and station is marked
1242          * authorized/associated
1243          */
1244         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1245             test_sta_flag(sta, WLAN_STA_ASSOC))
1246                 rate_control_rate_init(sta);
1247
1248         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1249                 sdata->vif.type == NL80211_IFTYPE_AP;
1250
1251         err = sta_info_insert_rcu(sta);
1252         if (err) {
1253                 rcu_read_unlock();
1254                 return err;
1255         }
1256
1257         if (layer2_update)
1258                 ieee80211_send_layer2_update(sta);
1259
1260         rcu_read_unlock();
1261
1262         return 0;
1263 }
1264
1265 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1266                                  struct station_del_parameters *params)
1267 {
1268         struct ieee80211_sub_if_data *sdata;
1269
1270         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1271
1272         if (params->mac)
1273                 return sta_info_destroy_addr_bss(sdata, params->mac);
1274
1275         sta_info_flush(sdata);
1276         return 0;
1277 }
1278
1279 static int ieee80211_change_station(struct wiphy *wiphy,
1280                                     struct net_device *dev, const u8 *mac,
1281                                     struct station_parameters *params)
1282 {
1283         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1284         struct ieee80211_local *local = wiphy_priv(wiphy);
1285         struct sta_info *sta;
1286         struct ieee80211_sub_if_data *vlansdata;
1287         enum cfg80211_station_type statype;
1288         int err;
1289
1290         mutex_lock(&local->sta_mtx);
1291
1292         sta = sta_info_get_bss(sdata, mac);
1293         if (!sta) {
1294                 err = -ENOENT;
1295                 goto out_err;
1296         }
1297
1298         switch (sdata->vif.type) {
1299         case NL80211_IFTYPE_MESH_POINT:
1300                 if (sdata->u.mesh.user_mpm)
1301                         statype = CFG80211_STA_MESH_PEER_USER;
1302                 else
1303                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1304                 break;
1305         case NL80211_IFTYPE_ADHOC:
1306                 statype = CFG80211_STA_IBSS;
1307                 break;
1308         case NL80211_IFTYPE_STATION:
1309                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1310                         statype = CFG80211_STA_AP_STA;
1311                         break;
1312                 }
1313                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1314                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1315                 else
1316                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1317                 break;
1318         case NL80211_IFTYPE_AP:
1319         case NL80211_IFTYPE_AP_VLAN:
1320                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1321                         statype = CFG80211_STA_AP_CLIENT;
1322                 else
1323                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1324                 break;
1325         default:
1326                 err = -EOPNOTSUPP;
1327                 goto out_err;
1328         }
1329
1330         err = cfg80211_check_station_change(wiphy, params, statype);
1331         if (err)
1332                 goto out_err;
1333
1334         if (params->vlan && params->vlan != sta->sdata->dev) {
1335                 bool prev_4addr = false;
1336                 bool new_4addr = false;
1337
1338                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1339
1340                 if (params->vlan->ieee80211_ptr->use_4addr) {
1341                         if (vlansdata->u.vlan.sta) {
1342                                 err = -EBUSY;
1343                                 goto out_err;
1344                         }
1345
1346                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1347                         new_4addr = true;
1348                 }
1349
1350                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1351                     sta->sdata->u.vlan.sta) {
1352                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1353                         prev_4addr = true;
1354                 }
1355
1356                 sta->sdata = vlansdata;
1357                 ieee80211_check_fast_xmit(sta);
1358
1359                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1360                     prev_4addr != new_4addr) {
1361                         if (new_4addr)
1362                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1363                         else
1364                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1365                 }
1366
1367                 ieee80211_send_layer2_update(sta);
1368         }
1369
1370         err = sta_apply_parameters(local, sta, params);
1371         if (err)
1372                 goto out_err;
1373
1374         mutex_unlock(&local->sta_mtx);
1375
1376         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1377              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1378             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1379             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1380             sta_info_tx_streams(sta) != 1) {
1381                 ht_dbg(sta->sdata,
1382                        "%pM just authorized and MIMO capable - update SMPS\n",
1383                        sta->sta.addr);
1384                 ieee80211_send_smps_action(sta->sdata,
1385                         sta->sdata->bss->req_smps,
1386                         sta->sta.addr,
1387                         sta->sdata->vif.bss_conf.bssid);
1388         }
1389
1390         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1391             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1392                 ieee80211_recalc_ps(local);
1393                 ieee80211_recalc_ps_vif(sdata);
1394         }
1395
1396         return 0;
1397 out_err:
1398         mutex_unlock(&local->sta_mtx);
1399         return err;
1400 }
1401
1402 #ifdef CONFIG_MAC80211_MESH
1403 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1404                                const u8 *dst, const u8 *next_hop)
1405 {
1406         struct ieee80211_sub_if_data *sdata;
1407         struct mesh_path *mpath;
1408         struct sta_info *sta;
1409
1410         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1411
1412         rcu_read_lock();
1413         sta = sta_info_get(sdata, next_hop);
1414         if (!sta) {
1415                 rcu_read_unlock();
1416                 return -ENOENT;
1417         }
1418
1419         mpath = mesh_path_add(sdata, dst);
1420         if (IS_ERR(mpath)) {
1421                 rcu_read_unlock();
1422                 return PTR_ERR(mpath);
1423         }
1424
1425         mesh_path_fix_nexthop(mpath, sta);
1426
1427         rcu_read_unlock();
1428         return 0;
1429 }
1430
1431 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1432                                const u8 *dst)
1433 {
1434         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1435
1436         if (dst)
1437                 return mesh_path_del(sdata, dst);
1438
1439         mesh_path_flush_by_iface(sdata);
1440         return 0;
1441 }
1442
1443 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1444                                   const u8 *dst, const u8 *next_hop)
1445 {
1446         struct ieee80211_sub_if_data *sdata;
1447         struct mesh_path *mpath;
1448         struct sta_info *sta;
1449
1450         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451
1452         rcu_read_lock();
1453
1454         sta = sta_info_get(sdata, next_hop);
1455         if (!sta) {
1456                 rcu_read_unlock();
1457                 return -ENOENT;
1458         }
1459
1460         mpath = mesh_path_lookup(sdata, dst);
1461         if (!mpath) {
1462                 rcu_read_unlock();
1463                 return -ENOENT;
1464         }
1465
1466         mesh_path_fix_nexthop(mpath, sta);
1467
1468         rcu_read_unlock();
1469         return 0;
1470 }
1471
1472 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1473                             struct mpath_info *pinfo)
1474 {
1475         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1476
1477         if (next_hop_sta)
1478                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1479         else
1480                 eth_zero_addr(next_hop);
1481
1482         memset(pinfo, 0, sizeof(*pinfo));
1483
1484         pinfo->generation = mesh_paths_generation;
1485
1486         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1487                         MPATH_INFO_SN |
1488                         MPATH_INFO_METRIC |
1489                         MPATH_INFO_EXPTIME |
1490                         MPATH_INFO_DISCOVERY_TIMEOUT |
1491                         MPATH_INFO_DISCOVERY_RETRIES |
1492                         MPATH_INFO_FLAGS;
1493
1494         pinfo->frame_qlen = mpath->frame_queue.qlen;
1495         pinfo->sn = mpath->sn;
1496         pinfo->metric = mpath->metric;
1497         if (time_before(jiffies, mpath->exp_time))
1498                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1499         pinfo->discovery_timeout =
1500                         jiffies_to_msecs(mpath->discovery_timeout);
1501         pinfo->discovery_retries = mpath->discovery_retries;
1502         if (mpath->flags & MESH_PATH_ACTIVE)
1503                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1504         if (mpath->flags & MESH_PATH_RESOLVING)
1505                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1506         if (mpath->flags & MESH_PATH_SN_VALID)
1507                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1508         if (mpath->flags & MESH_PATH_FIXED)
1509                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1510         if (mpath->flags & MESH_PATH_RESOLVED)
1511                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1512 }
1513
1514 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1515                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1516
1517 {
1518         struct ieee80211_sub_if_data *sdata;
1519         struct mesh_path *mpath;
1520
1521         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1522
1523         rcu_read_lock();
1524         mpath = mesh_path_lookup(sdata, dst);
1525         if (!mpath) {
1526                 rcu_read_unlock();
1527                 return -ENOENT;
1528         }
1529         memcpy(dst, mpath->dst, ETH_ALEN);
1530         mpath_set_pinfo(mpath, next_hop, pinfo);
1531         rcu_read_unlock();
1532         return 0;
1533 }
1534
1535 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1536                                 int idx, u8 *dst, u8 *next_hop,
1537                                 struct mpath_info *pinfo)
1538 {
1539         struct ieee80211_sub_if_data *sdata;
1540         struct mesh_path *mpath;
1541
1542         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1543
1544         rcu_read_lock();
1545         mpath = mesh_path_lookup_by_idx(sdata, idx);
1546         if (!mpath) {
1547                 rcu_read_unlock();
1548                 return -ENOENT;
1549         }
1550         memcpy(dst, mpath->dst, ETH_ALEN);
1551         mpath_set_pinfo(mpath, next_hop, pinfo);
1552         rcu_read_unlock();
1553         return 0;
1554 }
1555
1556 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1557                           struct mpath_info *pinfo)
1558 {
1559         memset(pinfo, 0, sizeof(*pinfo));
1560         memcpy(mpp, mpath->mpp, ETH_ALEN);
1561
1562         pinfo->generation = mpp_paths_generation;
1563 }
1564
1565 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1566                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1567
1568 {
1569         struct ieee80211_sub_if_data *sdata;
1570         struct mesh_path *mpath;
1571
1572         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1573
1574         rcu_read_lock();
1575         mpath = mpp_path_lookup(sdata, dst);
1576         if (!mpath) {
1577                 rcu_read_unlock();
1578                 return -ENOENT;
1579         }
1580         memcpy(dst, mpath->dst, ETH_ALEN);
1581         mpp_set_pinfo(mpath, mpp, pinfo);
1582         rcu_read_unlock();
1583         return 0;
1584 }
1585
1586 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1587                               int idx, u8 *dst, u8 *mpp,
1588                               struct mpath_info *pinfo)
1589 {
1590         struct ieee80211_sub_if_data *sdata;
1591         struct mesh_path *mpath;
1592
1593         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1594
1595         rcu_read_lock();
1596         mpath = mpp_path_lookup_by_idx(sdata, idx);
1597         if (!mpath) {
1598                 rcu_read_unlock();
1599                 return -ENOENT;
1600         }
1601         memcpy(dst, mpath->dst, ETH_ALEN);
1602         mpp_set_pinfo(mpath, mpp, pinfo);
1603         rcu_read_unlock();
1604         return 0;
1605 }
1606
1607 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1608                                 struct net_device *dev,
1609                                 struct mesh_config *conf)
1610 {
1611         struct ieee80211_sub_if_data *sdata;
1612         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1613
1614         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1615         return 0;
1616 }
1617
1618 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1619 {
1620         return (mask >> (parm-1)) & 0x1;
1621 }
1622
1623 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1624                 const struct mesh_setup *setup)
1625 {
1626         u8 *new_ie;
1627         const u8 *old_ie;
1628         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1629                                         struct ieee80211_sub_if_data, u.mesh);
1630
1631         /* allocate information elements */
1632         new_ie = NULL;
1633         old_ie = ifmsh->ie;
1634
1635         if (setup->ie_len) {
1636                 new_ie = kmemdup(setup->ie, setup->ie_len,
1637                                 GFP_KERNEL);
1638                 if (!new_ie)
1639                         return -ENOMEM;
1640         }
1641         ifmsh->ie_len = setup->ie_len;
1642         ifmsh->ie = new_ie;
1643         kfree(old_ie);
1644
1645         /* now copy the rest of the setup parameters */
1646         ifmsh->mesh_id_len = setup->mesh_id_len;
1647         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1648         ifmsh->mesh_sp_id = setup->sync_method;
1649         ifmsh->mesh_pp_id = setup->path_sel_proto;
1650         ifmsh->mesh_pm_id = setup->path_metric;
1651         ifmsh->user_mpm = setup->user_mpm;
1652         ifmsh->mesh_auth_id = setup->auth_id;
1653         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1654         if (setup->is_authenticated)
1655                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1656         if (setup->is_secure)
1657                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1658
1659         /* mcast rate setting in Mesh Node */
1660         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1661                                                 sizeof(setup->mcast_rate));
1662         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1663
1664         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1665         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1666
1667         return 0;
1668 }
1669
1670 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1671                                         struct net_device *dev, u32 mask,
1672                                         const struct mesh_config *nconf)
1673 {
1674         struct mesh_config *conf;
1675         struct ieee80211_sub_if_data *sdata;
1676         struct ieee80211_if_mesh *ifmsh;
1677
1678         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1679         ifmsh = &sdata->u.mesh;
1680
1681         /* Set the config options which we are interested in setting */
1682         conf = &(sdata->u.mesh.mshcfg);
1683         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1684                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1685         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1686                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1687         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1688                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1689         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1690                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1691         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1692                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1693         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1694                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1695         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1696                 conf->element_ttl = nconf->element_ttl;
1697         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1698                 if (ifmsh->user_mpm)
1699                         return -EBUSY;
1700                 conf->auto_open_plinks = nconf->auto_open_plinks;
1701         }
1702         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1703                 conf->dot11MeshNbrOffsetMaxNeighbor =
1704                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1705         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1706                 conf->dot11MeshHWMPmaxPREQretries =
1707                         nconf->dot11MeshHWMPmaxPREQretries;
1708         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1709                 conf->path_refresh_time = nconf->path_refresh_time;
1710         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1711                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1712         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1713                 conf->dot11MeshHWMPactivePathTimeout =
1714                         nconf->dot11MeshHWMPactivePathTimeout;
1715         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1716                 conf->dot11MeshHWMPpreqMinInterval =
1717                         nconf->dot11MeshHWMPpreqMinInterval;
1718         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1719                 conf->dot11MeshHWMPperrMinInterval =
1720                         nconf->dot11MeshHWMPperrMinInterval;
1721         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1722                            mask))
1723                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1724                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1725         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1726                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1727                 ieee80211_mesh_root_setup(ifmsh);
1728         }
1729         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1730                 /* our current gate announcement implementation rides on root
1731                  * announcements, so require this ifmsh to also be a root node
1732                  * */
1733                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1734                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1735                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1736                         ieee80211_mesh_root_setup(ifmsh);
1737                 }
1738                 conf->dot11MeshGateAnnouncementProtocol =
1739                         nconf->dot11MeshGateAnnouncementProtocol;
1740         }
1741         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1742                 conf->dot11MeshHWMPRannInterval =
1743                         nconf->dot11MeshHWMPRannInterval;
1744         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1745                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1746         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1747                 /* our RSSI threshold implementation is supported only for
1748                  * devices that report signal in dBm.
1749                  */
1750                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1751                         return -ENOTSUPP;
1752                 conf->rssi_threshold = nconf->rssi_threshold;
1753         }
1754         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1755                 conf->ht_opmode = nconf->ht_opmode;
1756                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1757                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1758         }
1759         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1760                 conf->dot11MeshHWMPactivePathToRootTimeout =
1761                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1762         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1763                 conf->dot11MeshHWMProotInterval =
1764                         nconf->dot11MeshHWMProotInterval;
1765         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1766                 conf->dot11MeshHWMPconfirmationInterval =
1767                         nconf->dot11MeshHWMPconfirmationInterval;
1768         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1769                 conf->power_mode = nconf->power_mode;
1770                 ieee80211_mps_local_status_update(sdata);
1771         }
1772         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1773                 conf->dot11MeshAwakeWindowDuration =
1774                         nconf->dot11MeshAwakeWindowDuration;
1775         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1776                 conf->plink_timeout = nconf->plink_timeout;
1777         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1778         return 0;
1779 }
1780
1781 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1782                                const struct mesh_config *conf,
1783                                const struct mesh_setup *setup)
1784 {
1785         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1786         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1787         int err;
1788
1789         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1790         err = copy_mesh_setup(ifmsh, setup);
1791         if (err)
1792                 return err;
1793
1794         /* can mesh use other SMPS modes? */
1795         sdata->smps_mode = IEEE80211_SMPS_OFF;
1796         sdata->needed_rx_chains = sdata->local->rx_chains;
1797
1798         mutex_lock(&sdata->local->mtx);
1799         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1800                                         IEEE80211_CHANCTX_SHARED);
1801         mutex_unlock(&sdata->local->mtx);
1802         if (err)
1803                 return err;
1804
1805         return ieee80211_start_mesh(sdata);
1806 }
1807
1808 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1809 {
1810         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1811
1812         ieee80211_stop_mesh(sdata);
1813         mutex_lock(&sdata->local->mtx);
1814         ieee80211_vif_release_channel(sdata);
1815         mutex_unlock(&sdata->local->mtx);
1816
1817         return 0;
1818 }
1819 #endif
1820
1821 static int ieee80211_change_bss(struct wiphy *wiphy,
1822                                 struct net_device *dev,
1823                                 struct bss_parameters *params)
1824 {
1825         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1826         enum ieee80211_band band;
1827         u32 changed = 0;
1828
1829         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1830                 return -ENOENT;
1831
1832         band = ieee80211_get_sdata_band(sdata);
1833
1834         if (params->use_cts_prot >= 0) {
1835                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1836                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1837         }
1838         if (params->use_short_preamble >= 0) {
1839                 sdata->vif.bss_conf.use_short_preamble =
1840                         params->use_short_preamble;
1841                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1842         }
1843
1844         if (!sdata->vif.bss_conf.use_short_slot &&
1845             band == IEEE80211_BAND_5GHZ) {
1846                 sdata->vif.bss_conf.use_short_slot = true;
1847                 changed |= BSS_CHANGED_ERP_SLOT;
1848         }
1849
1850         if (params->use_short_slot_time >= 0) {
1851                 sdata->vif.bss_conf.use_short_slot =
1852                         params->use_short_slot_time;
1853                 changed |= BSS_CHANGED_ERP_SLOT;
1854         }
1855
1856         if (params->basic_rates) {
1857                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1858                                          wiphy->bands[band],
1859                                          params->basic_rates,
1860                                          params->basic_rates_len,
1861                                          &sdata->vif.bss_conf.basic_rates);
1862                 changed |= BSS_CHANGED_BASIC_RATES;
1863         }
1864
1865         if (params->ap_isolate >= 0) {
1866                 if (params->ap_isolate)
1867                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1868                 else
1869                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1870         }
1871
1872         if (params->ht_opmode >= 0) {
1873                 sdata->vif.bss_conf.ht_operation_mode =
1874                         (u16) params->ht_opmode;
1875                 changed |= BSS_CHANGED_HT;
1876         }
1877
1878         if (params->p2p_ctwindow >= 0) {
1879                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1880                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1881                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1882                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1883                 changed |= BSS_CHANGED_P2P_PS;
1884         }
1885
1886         if (params->p2p_opp_ps > 0) {
1887                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1888                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1889                 changed |= BSS_CHANGED_P2P_PS;
1890         } else if (params->p2p_opp_ps == 0) {
1891                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1892                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1893                 changed |= BSS_CHANGED_P2P_PS;
1894         }
1895
1896         ieee80211_bss_info_change_notify(sdata, changed);
1897
1898         return 0;
1899 }
1900
1901 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1902                                     struct net_device *dev,
1903                                     struct ieee80211_txq_params *params)
1904 {
1905         struct ieee80211_local *local = wiphy_priv(wiphy);
1906         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1907         struct ieee80211_tx_queue_params p;
1908
1909         if (!local->ops->conf_tx)
1910                 return -EOPNOTSUPP;
1911
1912         if (local->hw.queues < IEEE80211_NUM_ACS)
1913                 return -EOPNOTSUPP;
1914
1915         memset(&p, 0, sizeof(p));
1916         p.aifs = params->aifs;
1917         p.cw_max = params->cwmax;
1918         p.cw_min = params->cwmin;
1919         p.txop = params->txop;
1920
1921         /*
1922          * Setting tx queue params disables u-apsd because it's only
1923          * called in master mode.
1924          */
1925         p.uapsd = false;
1926
1927         sdata->tx_conf[params->ac] = p;
1928         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1929                 wiphy_debug(local->hw.wiphy,
1930                             "failed to set TX queue parameters for AC %d\n",
1931                             params->ac);
1932                 return -EINVAL;
1933         }
1934
1935         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1936
1937         return 0;
1938 }
1939
1940 #ifdef CONFIG_PM
1941 static int ieee80211_suspend(struct wiphy *wiphy,
1942                              struct cfg80211_wowlan *wowlan)
1943 {
1944         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1945 }
1946
1947 static int ieee80211_resume(struct wiphy *wiphy)
1948 {
1949         return __ieee80211_resume(wiphy_priv(wiphy));
1950 }
1951 #else
1952 #define ieee80211_suspend NULL
1953 #define ieee80211_resume NULL
1954 #endif
1955
1956 static int ieee80211_scan(struct wiphy *wiphy,
1957                           struct cfg80211_scan_request *req)
1958 {
1959         struct ieee80211_sub_if_data *sdata;
1960
1961         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1962
1963         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1964         case NL80211_IFTYPE_STATION:
1965         case NL80211_IFTYPE_ADHOC:
1966         case NL80211_IFTYPE_MESH_POINT:
1967         case NL80211_IFTYPE_P2P_CLIENT:
1968         case NL80211_IFTYPE_P2P_DEVICE:
1969                 break;
1970         case NL80211_IFTYPE_P2P_GO:
1971                 if (sdata->local->ops->hw_scan)
1972                         break;
1973                 /*
1974                  * FIXME: implement NoA while scanning in software,
1975                  * for now fall through to allow scanning only when
1976                  * beaconing hasn't been configured yet
1977                  */
1978         case NL80211_IFTYPE_AP:
1979                 /*
1980                  * If the scan has been forced (and the driver supports
1981                  * forcing), don't care about being beaconing already.
1982                  * This will create problems to the attached stations (e.g. all
1983                  * the  frames sent while scanning on other channel will be
1984                  * lost)
1985                  */
1986                 if (sdata->u.ap.beacon &&
1987                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1988                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1989                         return -EOPNOTSUPP;
1990                 break;
1991         default:
1992                 return -EOPNOTSUPP;
1993         }
1994
1995         return ieee80211_request_scan(sdata, req);
1996 }
1997
1998 static int
1999 ieee80211_sched_scan_start(struct wiphy *wiphy,
2000                            struct net_device *dev,
2001                            struct cfg80211_sched_scan_request *req)
2002 {
2003         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2004
2005         if (!sdata->local->ops->sched_scan_start)
2006                 return -EOPNOTSUPP;
2007
2008         return ieee80211_request_sched_scan_start(sdata, req);
2009 }
2010
2011 static int
2012 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2013 {
2014         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2015
2016         if (!sdata->local->ops->sched_scan_stop)
2017                 return -EOPNOTSUPP;
2018
2019         return ieee80211_request_sched_scan_stop(sdata);
2020 }
2021
2022 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2023                           struct cfg80211_auth_request *req)
2024 {
2025         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2026 }
2027
2028 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2029                            struct cfg80211_assoc_request *req)
2030 {
2031         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2032 }
2033
2034 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2035                             struct cfg80211_deauth_request *req)
2036 {
2037         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2038 }
2039
2040 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2041                               struct cfg80211_disassoc_request *req)
2042 {
2043         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2044 }
2045
2046 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2047                                struct cfg80211_ibss_params *params)
2048 {
2049         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2050 }
2051
2052 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2053 {
2054         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2055 }
2056
2057 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2058                               struct ocb_setup *setup)
2059 {
2060         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2061 }
2062
2063 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2064 {
2065         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2066 }
2067
2068 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2069                                     int rate[IEEE80211_NUM_BANDS])
2070 {
2071         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2072
2073         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2074                sizeof(int) * IEEE80211_NUM_BANDS);
2075
2076         return 0;
2077 }
2078
2079 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2080 {
2081         struct ieee80211_local *local = wiphy_priv(wiphy);
2082         int err;
2083
2084         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2085                 ieee80211_check_fast_xmit_all(local);
2086
2087                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2088
2089                 if (err) {
2090                         ieee80211_check_fast_xmit_all(local);
2091                         return err;
2092                 }
2093         }
2094
2095         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2096             (changed & WIPHY_PARAM_DYN_ACK)) {
2097                 s16 coverage_class;
2098
2099                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2100                                         wiphy->coverage_class : -1;
2101                 err = drv_set_coverage_class(local, coverage_class);
2102
2103                 if (err)
2104                         return err;
2105         }
2106
2107         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2108                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2109
2110                 if (err)
2111                         return err;
2112         }
2113
2114         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2115                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2116                         return -EINVAL;
2117                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2118         }
2119         if (changed & WIPHY_PARAM_RETRY_LONG) {
2120                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2121                         return -EINVAL;
2122                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2123         }
2124         if (changed &
2125             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2126                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2127
2128         return 0;
2129 }
2130
2131 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2132                                   struct wireless_dev *wdev,
2133                                   enum nl80211_tx_power_setting type, int mbm)
2134 {
2135         struct ieee80211_local *local = wiphy_priv(wiphy);
2136         struct ieee80211_sub_if_data *sdata;
2137         enum nl80211_tx_power_setting txp_type = type;
2138         bool update_txp_type = false;
2139
2140         if (wdev) {
2141                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2142
2143                 switch (type) {
2144                 case NL80211_TX_POWER_AUTOMATIC:
2145                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2146                         txp_type = NL80211_TX_POWER_LIMITED;
2147                         break;
2148                 case NL80211_TX_POWER_LIMITED:
2149                 case NL80211_TX_POWER_FIXED:
2150                         if (mbm < 0 || (mbm % 100))
2151                                 return -EOPNOTSUPP;
2152                         sdata->user_power_level = MBM_TO_DBM(mbm);
2153                         break;
2154                 }
2155
2156                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2157                         update_txp_type = true;
2158                         sdata->vif.bss_conf.txpower_type = txp_type;
2159                 }
2160
2161                 ieee80211_recalc_txpower(sdata, update_txp_type);
2162
2163                 return 0;
2164         }
2165
2166         switch (type) {
2167         case NL80211_TX_POWER_AUTOMATIC:
2168                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2169                 txp_type = NL80211_TX_POWER_LIMITED;
2170                 break;
2171         case NL80211_TX_POWER_LIMITED:
2172         case NL80211_TX_POWER_FIXED:
2173                 if (mbm < 0 || (mbm % 100))
2174                         return -EOPNOTSUPP;
2175                 local->user_power_level = MBM_TO_DBM(mbm);
2176                 break;
2177         }
2178
2179         mutex_lock(&local->iflist_mtx);
2180         list_for_each_entry(sdata, &local->interfaces, list) {
2181                 sdata->user_power_level = local->user_power_level;
2182                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2183                         update_txp_type = true;
2184                 sdata->vif.bss_conf.txpower_type = txp_type;
2185         }
2186         list_for_each_entry(sdata, &local->interfaces, list)
2187                 ieee80211_recalc_txpower(sdata, update_txp_type);
2188         mutex_unlock(&local->iflist_mtx);
2189
2190         return 0;
2191 }
2192
2193 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2194                                   struct wireless_dev *wdev,
2195                                   int *dbm)
2196 {
2197         struct ieee80211_local *local = wiphy_priv(wiphy);
2198         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2199
2200         if (local->ops->get_txpower)
2201                 return drv_get_txpower(local, sdata, dbm);
2202
2203         if (!local->use_chanctx)
2204                 *dbm = local->hw.conf.power_level;
2205         else
2206                 *dbm = sdata->vif.bss_conf.txpower;
2207
2208         return 0;
2209 }
2210
2211 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2212                                   const u8 *addr)
2213 {
2214         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2215
2216         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2217
2218         return 0;
2219 }
2220
2221 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2222 {
2223         struct ieee80211_local *local = wiphy_priv(wiphy);
2224
2225         drv_rfkill_poll(local);
2226 }
2227
2228 #ifdef CONFIG_NL80211_TESTMODE
2229 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2230                                   struct wireless_dev *wdev,
2231                                   void *data, int len)
2232 {
2233         struct ieee80211_local *local = wiphy_priv(wiphy);
2234         struct ieee80211_vif *vif = NULL;
2235
2236         if (!local->ops->testmode_cmd)
2237                 return -EOPNOTSUPP;
2238
2239         if (wdev) {
2240                 struct ieee80211_sub_if_data *sdata;
2241
2242                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2243                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2244                         vif = &sdata->vif;
2245         }
2246
2247         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2248 }
2249
2250 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2251                                    struct sk_buff *skb,
2252                                    struct netlink_callback *cb,
2253                                    void *data, int len)
2254 {
2255         struct ieee80211_local *local = wiphy_priv(wiphy);
2256
2257         if (!local->ops->testmode_dump)
2258                 return -EOPNOTSUPP;
2259
2260         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2261 }
2262 #endif
2263
2264 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2265                                 enum ieee80211_smps_mode smps_mode)
2266 {
2267         struct sta_info *sta;
2268         enum ieee80211_smps_mode old_req;
2269
2270         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2271                 return -EINVAL;
2272
2273         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2274                 return 0;
2275
2276         old_req = sdata->u.ap.req_smps;
2277         sdata->u.ap.req_smps = smps_mode;
2278
2279         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2280         if (old_req == smps_mode ||
2281             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2282                 return 0;
2283
2284          /* If no associated stations, there's no need to do anything */
2285         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2286                 sdata->smps_mode = smps_mode;
2287                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2288                 return 0;
2289         }
2290
2291         ht_dbg(sdata,
2292                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2293                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2294
2295         mutex_lock(&sdata->local->sta_mtx);
2296         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2297                 /*
2298                  * Only stations associated to our AP and
2299                  * associated VLANs
2300                  */
2301                 if (sta->sdata->bss != &sdata->u.ap)
2302                         continue;
2303
2304                 /* This station doesn't support MIMO - skip it */
2305                 if (sta_info_tx_streams(sta) == 1)
2306                         continue;
2307
2308                 /*
2309                  * Don't wake up a STA just to send the action frame
2310                  * unless we are getting more restrictive.
2311                  */
2312                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2313                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2314                                                    smps_mode)) {
2315                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2316                                sta->sta.addr);
2317                         continue;
2318                 }
2319
2320                 /*
2321                  * If the STA is not authorized, wait until it gets
2322                  * authorized and the action frame will be sent then.
2323                  */
2324                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2325                         continue;
2326
2327                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2328                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2329                                            sdata->vif.bss_conf.bssid);
2330         }
2331         mutex_unlock(&sdata->local->sta_mtx);
2332
2333         sdata->smps_mode = smps_mode;
2334         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2335
2336         return 0;
2337 }
2338
2339 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2340                                  enum ieee80211_smps_mode smps_mode)
2341 {
2342         const u8 *ap;
2343         enum ieee80211_smps_mode old_req;
2344         int err;
2345         struct sta_info *sta;
2346         bool tdls_peer_found = false;
2347
2348         lockdep_assert_held(&sdata->wdev.mtx);
2349
2350         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2351                 return -EINVAL;
2352
2353         old_req = sdata->u.mgd.req_smps;
2354         sdata->u.mgd.req_smps = smps_mode;
2355
2356         if (old_req == smps_mode &&
2357             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2358                 return 0;
2359
2360         /*
2361          * If not associated, or current association is not an HT
2362          * association, there's no need to do anything, just store
2363          * the new value until we associate.
2364          */
2365         if (!sdata->u.mgd.associated ||
2366             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2367                 return 0;
2368
2369         ap = sdata->u.mgd.associated->bssid;
2370
2371         rcu_read_lock();
2372         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2373                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2374                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2375                         continue;
2376
2377                 tdls_peer_found = true;
2378                 break;
2379         }
2380         rcu_read_unlock();
2381
2382         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2383                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2384                         smps_mode = IEEE80211_SMPS_OFF;
2385                 else
2386                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2387         }
2388
2389         /* send SM PS frame to AP */
2390         err = ieee80211_send_smps_action(sdata, smps_mode,
2391                                          ap, ap);
2392         if (err)
2393                 sdata->u.mgd.req_smps = old_req;
2394         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2395                 ieee80211_teardown_tdls_peers(sdata);
2396
2397         return err;
2398 }
2399
2400 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2401                                     bool enabled, int timeout)
2402 {
2403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2404         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2405
2406         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2407                 return -EOPNOTSUPP;
2408
2409         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2410                 return -EOPNOTSUPP;
2411
2412         if (enabled == sdata->u.mgd.powersave &&
2413             timeout == local->dynamic_ps_forced_timeout)
2414                 return 0;
2415
2416         sdata->u.mgd.powersave = enabled;
2417         local->dynamic_ps_forced_timeout = timeout;
2418
2419         /* no change, but if automatic follow powersave */
2420         sdata_lock(sdata);
2421         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2422         sdata_unlock(sdata);
2423
2424         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2425                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2426
2427         ieee80211_recalc_ps(local);
2428         ieee80211_recalc_ps_vif(sdata);
2429
2430         return 0;
2431 }
2432
2433 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2434                                          struct net_device *dev,
2435                                          s32 rssi_thold, u32 rssi_hyst)
2436 {
2437         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2438         struct ieee80211_vif *vif = &sdata->vif;
2439         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2440
2441         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2442             rssi_hyst == bss_conf->cqm_rssi_hyst)
2443                 return 0;
2444
2445         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2446             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2447                 return -EOPNOTSUPP;
2448
2449         bss_conf->cqm_rssi_thold = rssi_thold;
2450         bss_conf->cqm_rssi_hyst = rssi_hyst;
2451         sdata->u.mgd.last_cqm_event_signal = 0;
2452
2453         /* tell the driver upon association, unless already associated */
2454         if (sdata->u.mgd.associated &&
2455             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2456                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2457
2458         return 0;
2459 }
2460
2461 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2462                                       struct net_device *dev,
2463                                       const u8 *addr,
2464                                       const struct cfg80211_bitrate_mask *mask)
2465 {
2466         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2467         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2468         int i, ret;
2469
2470         if (!ieee80211_sdata_running(sdata))
2471                 return -ENETDOWN;
2472
2473         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2474                 ret = drv_set_bitrate_mask(local, sdata, mask);
2475                 if (ret)
2476                         return ret;
2477         }
2478
2479         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2480                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2481                 int j;
2482
2483                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2484                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2485                        sizeof(mask->control[i].ht_mcs));
2486                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2487                        mask->control[i].vht_mcs,
2488                        sizeof(mask->control[i].vht_mcs));
2489
2490                 sdata->rc_has_mcs_mask[i] = false;
2491                 sdata->rc_has_vht_mcs_mask[i] = false;
2492                 if (!sband)
2493                         continue;
2494
2495                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2496                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2497                                 sdata->rc_has_mcs_mask[i] = true;
2498                                 break;
2499                         }
2500                 }
2501
2502                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2503                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2504                                 sdata->rc_has_vht_mcs_mask[i] = true;
2505                                 break;
2506                         }
2507                 }
2508         }
2509
2510         return 0;
2511 }
2512
2513 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2514                                            struct ieee80211_roc_work *new_roc,
2515                                            struct ieee80211_roc_work *cur_roc)
2516 {
2517         unsigned long now = jiffies;
2518         unsigned long remaining = cur_roc->hw_start_time +
2519                                   msecs_to_jiffies(cur_roc->duration) -
2520                                   now;
2521
2522         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2523                 return false;
2524
2525         /* if it doesn't fit entirely, schedule a new one */
2526         if (new_roc->duration > jiffies_to_msecs(remaining))
2527                 return false;
2528
2529         ieee80211_handle_roc_started(new_roc);
2530
2531         /* add to dependents so we send the expired event properly */
2532         list_add_tail(&new_roc->list, &cur_roc->dependents);
2533         return true;
2534 }
2535
2536 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2537 {
2538         lockdep_assert_held(&local->mtx);
2539
2540         local->roc_cookie_counter++;
2541
2542         /* wow, you wrapped 64 bits ... more likely a bug */
2543         if (WARN_ON(local->roc_cookie_counter == 0))
2544                 local->roc_cookie_counter++;
2545
2546         return local->roc_cookie_counter;
2547 }
2548
2549 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2550                                     struct ieee80211_sub_if_data *sdata,
2551                                     struct ieee80211_channel *channel,
2552                                     unsigned int duration, u64 *cookie,
2553                                     struct sk_buff *txskb,
2554                                     enum ieee80211_roc_type type)
2555 {
2556         struct ieee80211_roc_work *roc, *tmp;
2557         bool queued = false;
2558         int ret;
2559
2560         lockdep_assert_held(&local->mtx);
2561
2562         if (local->use_chanctx && !local->ops->remain_on_channel)
2563                 return -EOPNOTSUPP;
2564
2565         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2566         if (!roc)
2567                 return -ENOMEM;
2568
2569         /*
2570          * If the duration is zero, then the driver
2571          * wouldn't actually do anything. Set it to
2572          * 10 for now.
2573          *
2574          * TODO: cancel the off-channel operation
2575          *       when we get the SKB's TX status and
2576          *       the wait time was zero before.
2577          */
2578         if (!duration)
2579                 duration = 10;
2580
2581         roc->chan = channel;
2582         roc->duration = duration;
2583         roc->req_duration = duration;
2584         roc->frame = txskb;
2585         roc->type = type;
2586         roc->sdata = sdata;
2587         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2588         INIT_LIST_HEAD(&roc->dependents);
2589
2590         /*
2591          * cookie is either the roc cookie (for normal roc)
2592          * or the SKB (for mgmt TX)
2593          */
2594         if (!txskb) {
2595                 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2596                 *cookie = roc->cookie;
2597         } else {
2598                 roc->mgmt_tx_cookie = *cookie;
2599         }
2600
2601         /* if there's one pending or we're scanning, queue this one */
2602         if (!list_empty(&local->roc_list) ||
2603             local->scanning || ieee80211_is_radar_required(local))
2604                 goto out_check_combine;
2605
2606         /* if not HW assist, just queue & schedule work */
2607         if (!local->ops->remain_on_channel) {
2608                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2609                 goto out_queue;
2610         }
2611
2612         /* otherwise actually kick it off here (for error handling) */
2613
2614         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2615         if (ret) {
2616                 kfree(roc);
2617                 return ret;
2618         }
2619
2620         roc->started = true;
2621         goto out_queue;
2622
2623  out_check_combine:
2624         list_for_each_entry(tmp, &local->roc_list, list) {
2625                 if (tmp->chan != channel || tmp->sdata != sdata)
2626                         continue;
2627
2628                 /*
2629                  * Extend this ROC if possible:
2630                  *
2631                  * If it hasn't started yet, just increase the duration
2632                  * and add the new one to the list of dependents.
2633                  * If the type of the new ROC has higher priority, modify the
2634                  * type of the previous one to match that of the new one.
2635                  */
2636                 if (!tmp->started) {
2637                         list_add_tail(&roc->list, &tmp->dependents);
2638                         tmp->duration = max(tmp->duration, roc->duration);
2639                         tmp->type = max(tmp->type, roc->type);
2640                         queued = true;
2641                         break;
2642                 }
2643
2644                 /* If it has already started, it's more difficult ... */
2645                 if (local->ops->remain_on_channel) {
2646                         /*
2647                          * In the offloaded ROC case, if it hasn't begun, add
2648                          * this new one to the dependent list to be handled
2649                          * when the master one begins. If it has begun,
2650                          * check if it fits entirely within the existing one,
2651                          * in which case it will just be dependent as well.
2652                          * Otherwise, schedule it by itself.
2653                          */
2654                         if (!tmp->hw_begun) {
2655                                 list_add_tail(&roc->list, &tmp->dependents);
2656                                 queued = true;
2657                                 break;
2658                         }
2659
2660                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2661                                 queued = true;
2662                 } else if (del_timer_sync(&tmp->work.timer)) {
2663                         unsigned long new_end;
2664
2665                         /*
2666                          * In the software ROC case, cancel the timer, if
2667                          * that fails then the finish work is already
2668                          * queued/pending and thus we queue the new ROC
2669                          * normally, if that succeeds then we can extend
2670                          * the timer duration and TX the frame (if any.)
2671                          */
2672
2673                         list_add_tail(&roc->list, &tmp->dependents);
2674                         queued = true;
2675
2676                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2677
2678                         /* ok, it was started & we canceled timer */
2679                         if (time_after(new_end, tmp->work.timer.expires))
2680                                 mod_timer(&tmp->work.timer, new_end);
2681                         else
2682                                 add_timer(&tmp->work.timer);
2683
2684                         ieee80211_handle_roc_started(roc);
2685                 }
2686                 break;
2687         }
2688
2689  out_queue:
2690         if (!queued)
2691                 list_add_tail(&roc->list, &local->roc_list);
2692
2693         return 0;
2694 }
2695
2696 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2697                                        struct wireless_dev *wdev,
2698                                        struct ieee80211_channel *chan,
2699                                        unsigned int duration,
2700                                        u64 *cookie)
2701 {
2702         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2703         struct ieee80211_local *local = sdata->local;
2704         int ret;
2705
2706         mutex_lock(&local->mtx);
2707         ret = ieee80211_start_roc_work(local, sdata, chan,
2708                                        duration, cookie, NULL,
2709                                        IEEE80211_ROC_TYPE_NORMAL);
2710         mutex_unlock(&local->mtx);
2711
2712         return ret;
2713 }
2714
2715 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2716                                 u64 cookie, bool mgmt_tx)
2717 {
2718         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2719         int ret;
2720
2721         mutex_lock(&local->mtx);
2722         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2723                 struct ieee80211_roc_work *dep, *tmp2;
2724
2725                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2726                         if (!mgmt_tx && dep->cookie != cookie)
2727                                 continue;
2728                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2729                                 continue;
2730                         /* found dependent item -- just remove it */
2731                         list_del(&dep->list);
2732                         mutex_unlock(&local->mtx);
2733
2734                         ieee80211_roc_notify_destroy(dep, true);
2735                         return 0;
2736                 }
2737
2738                 if (!mgmt_tx && roc->cookie != cookie)
2739                         continue;
2740                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2741                         continue;
2742
2743                 found = roc;
2744                 break;
2745         }
2746
2747         if (!found) {
2748                 mutex_unlock(&local->mtx);
2749                 return -ENOENT;
2750         }
2751
2752         /*
2753          * We found the item to cancel, so do that. Note that it
2754          * may have dependents, which we also cancel (and send
2755          * the expired signal for.) Not doing so would be quite
2756          * tricky here, but we may need to fix it later.
2757          */
2758
2759         if (local->ops->remain_on_channel) {
2760                 if (found->started) {
2761                         ret = drv_cancel_remain_on_channel(local);
2762                         if (WARN_ON_ONCE(ret)) {
2763                                 mutex_unlock(&local->mtx);
2764                                 return ret;
2765                         }
2766                 }
2767
2768                 list_del(&found->list);
2769
2770                 if (found->started)
2771                         ieee80211_start_next_roc(local);
2772                 mutex_unlock(&local->mtx);
2773
2774                 ieee80211_roc_notify_destroy(found, true);
2775         } else {
2776                 /* work may be pending so use it all the time */
2777                 found->abort = true;
2778                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2779
2780                 mutex_unlock(&local->mtx);
2781
2782                 /* work will clean up etc */
2783                 flush_delayed_work(&found->work);
2784                 WARN_ON(!found->to_be_freed);
2785                 kfree(found);
2786         }
2787
2788         return 0;
2789 }
2790
2791 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2792                                               struct wireless_dev *wdev,
2793                                               u64 cookie)
2794 {
2795         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2796         struct ieee80211_local *local = sdata->local;
2797
2798         return ieee80211_cancel_roc(local, cookie, false);
2799 }
2800
2801 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2802                                            struct net_device *dev,
2803                                            struct cfg80211_chan_def *chandef,
2804                                            u32 cac_time_ms)
2805 {
2806         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2807         struct ieee80211_local *local = sdata->local;
2808         int err;
2809
2810         mutex_lock(&local->mtx);
2811         if (!list_empty(&local->roc_list) || local->scanning) {
2812                 err = -EBUSY;
2813                 goto out_unlock;
2814         }
2815
2816         /* whatever, but channel contexts should not complain about that one */
2817         sdata->smps_mode = IEEE80211_SMPS_OFF;
2818         sdata->needed_rx_chains = local->rx_chains;
2819
2820         err = ieee80211_vif_use_channel(sdata, chandef,
2821                                         IEEE80211_CHANCTX_SHARED);
2822         if (err)
2823                 goto out_unlock;
2824
2825         ieee80211_queue_delayed_work(&sdata->local->hw,
2826                                      &sdata->dfs_cac_timer_work,
2827                                      msecs_to_jiffies(cac_time_ms));
2828
2829  out_unlock:
2830         mutex_unlock(&local->mtx);
2831         return err;
2832 }
2833
2834 static struct cfg80211_beacon_data *
2835 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2836 {
2837         struct cfg80211_beacon_data *new_beacon;
2838         u8 *pos;
2839         int len;
2840
2841         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2842               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2843               beacon->probe_resp_len;
2844
2845         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2846         if (!new_beacon)
2847                 return NULL;
2848
2849         pos = (u8 *)(new_beacon + 1);
2850         if (beacon->head_len) {
2851                 new_beacon->head_len = beacon->head_len;
2852                 new_beacon->head = pos;
2853                 memcpy(pos, beacon->head, beacon->head_len);
2854                 pos += beacon->head_len;
2855         }
2856         if (beacon->tail_len) {
2857                 new_beacon->tail_len = beacon->tail_len;
2858                 new_beacon->tail = pos;
2859                 memcpy(pos, beacon->tail, beacon->tail_len);
2860                 pos += beacon->tail_len;
2861         }
2862         if (beacon->beacon_ies_len) {
2863                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2864                 new_beacon->beacon_ies = pos;
2865                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2866                 pos += beacon->beacon_ies_len;
2867         }
2868         if (beacon->proberesp_ies_len) {
2869                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2870                 new_beacon->proberesp_ies = pos;
2871                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2872                 pos += beacon->proberesp_ies_len;
2873         }
2874         if (beacon->assocresp_ies_len) {
2875                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2876                 new_beacon->assocresp_ies = pos;
2877                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2878                 pos += beacon->assocresp_ies_len;
2879         }
2880         if (beacon->probe_resp_len) {
2881                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2882                 beacon->probe_resp = pos;
2883                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2884                 pos += beacon->probe_resp_len;
2885         }
2886
2887         return new_beacon;
2888 }
2889
2890 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2891 {
2892         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2893
2894         ieee80211_queue_work(&sdata->local->hw,
2895                              &sdata->csa_finalize_work);
2896 }
2897 EXPORT_SYMBOL(ieee80211_csa_finish);
2898
2899 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2900                                           u32 *changed)
2901 {
2902         int err;
2903
2904         switch (sdata->vif.type) {
2905         case NL80211_IFTYPE_AP:
2906                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2907                                               NULL);
2908                 kfree(sdata->u.ap.next_beacon);
2909                 sdata->u.ap.next_beacon = NULL;
2910
2911                 if (err < 0)
2912                         return err;
2913                 *changed |= err;
2914                 break;
2915         case NL80211_IFTYPE_ADHOC:
2916                 err = ieee80211_ibss_finish_csa(sdata);
2917                 if (err < 0)
2918                         return err;
2919                 *changed |= err;
2920                 break;
2921 #ifdef CONFIG_MAC80211_MESH
2922         case NL80211_IFTYPE_MESH_POINT:
2923                 err = ieee80211_mesh_finish_csa(sdata);
2924                 if (err < 0)
2925                         return err;
2926                 *changed |= err;
2927                 break;
2928 #endif
2929         default:
2930                 WARN_ON(1);
2931                 return -EINVAL;
2932         }
2933
2934         return 0;
2935 }
2936
2937 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2938 {
2939         struct ieee80211_local *local = sdata->local;
2940         u32 changed = 0;
2941         int err;
2942
2943         sdata_assert_lock(sdata);
2944         lockdep_assert_held(&local->mtx);
2945         lockdep_assert_held(&local->chanctx_mtx);
2946
2947         /*
2948          * using reservation isn't immediate as it may be deferred until later
2949          * with multi-vif. once reservation is complete it will re-schedule the
2950          * work with no reserved_chanctx so verify chandef to check if it
2951          * completed successfully
2952          */
2953
2954         if (sdata->reserved_chanctx) {
2955                 /*
2956                  * with multi-vif csa driver may call ieee80211_csa_finish()
2957                  * many times while waiting for other interfaces to use their
2958                  * reservations
2959                  */
2960                 if (sdata->reserved_ready)
2961                         return 0;
2962
2963                 return ieee80211_vif_use_reserved_context(sdata);
2964         }
2965
2966         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2967                                         &sdata->csa_chandef))
2968                 return -EINVAL;
2969
2970         sdata->vif.csa_active = false;
2971
2972         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2973         if (err)
2974                 return err;
2975
2976         ieee80211_bss_info_change_notify(sdata, changed);
2977
2978         if (sdata->csa_block_tx) {
2979                 ieee80211_wake_vif_queues(local, sdata,
2980                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2981                 sdata->csa_block_tx = false;
2982         }
2983
2984         err = drv_post_channel_switch(sdata);
2985         if (err)
2986                 return err;
2987
2988         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2989
2990         return 0;
2991 }
2992
2993 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2994 {
2995         if (__ieee80211_csa_finalize(sdata)) {
2996                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2997                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2998                                     GFP_KERNEL);
2999         }
3000 }
3001
3002 void ieee80211_csa_finalize_work(struct work_struct *work)
3003 {
3004         struct ieee80211_sub_if_data *sdata =
3005                 container_of(work, struct ieee80211_sub_if_data,
3006                              csa_finalize_work);
3007         struct ieee80211_local *local = sdata->local;
3008
3009         sdata_lock(sdata);
3010         mutex_lock(&local->mtx);
3011         mutex_lock(&local->chanctx_mtx);
3012
3013         /* AP might have been stopped while waiting for the lock. */
3014         if (!sdata->vif.csa_active)
3015                 goto unlock;
3016
3017         if (!ieee80211_sdata_running(sdata))
3018                 goto unlock;
3019
3020         ieee80211_csa_finalize(sdata);
3021
3022 unlock:
3023         mutex_unlock(&local->chanctx_mtx);
3024         mutex_unlock(&local->mtx);
3025         sdata_unlock(sdata);
3026 }
3027
3028 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3029                                     struct cfg80211_csa_settings *params,
3030                                     u32 *changed)
3031 {
3032         struct ieee80211_csa_settings csa = {};
3033         int err;
3034
3035         switch (sdata->vif.type) {
3036         case NL80211_IFTYPE_AP:
3037                 sdata->u.ap.next_beacon =
3038                         cfg80211_beacon_dup(&params->beacon_after);
3039                 if (!sdata->u.ap.next_beacon)
3040                         return -ENOMEM;
3041
3042                 /*
3043                  * With a count of 0, we don't have to wait for any
3044                  * TBTT before switching, so complete the CSA
3045                  * immediately.  In theory, with a count == 1 we
3046                  * should delay the switch until just before the next
3047                  * TBTT, but that would complicate things so we switch
3048                  * immediately too.  If we would delay the switch
3049                  * until the next TBTT, we would have to set the probe
3050                  * response here.
3051                  *
3052                  * TODO: A channel switch with count <= 1 without
3053                  * sending a CSA action frame is kind of useless,
3054                  * because the clients won't know we're changing
3055                  * channels.  The action frame must be implemented
3056                  * either here or in the userspace.
3057                  */
3058                 if (params->count <= 1)
3059                         break;
3060
3061                 if ((params->n_counter_offsets_beacon >
3062                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3063                     (params->n_counter_offsets_presp >
3064                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3065                         return -EINVAL;
3066
3067                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3068                 csa.counter_offsets_presp = params->counter_offsets_presp;
3069                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3070                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3071                 csa.count = params->count;
3072
3073                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3074                 if (err < 0) {
3075                         kfree(sdata->u.ap.next_beacon);
3076                         return err;
3077                 }
3078                 *changed |= err;
3079
3080                 break;
3081         case NL80211_IFTYPE_ADHOC:
3082                 if (!sdata->vif.bss_conf.ibss_joined)
3083                         return -EINVAL;
3084
3085                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3086                         return -EINVAL;
3087
3088                 switch (params->chandef.width) {
3089                 case NL80211_CHAN_WIDTH_40:
3090                         if (cfg80211_get_chandef_type(&params->chandef) !=
3091                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3092                                 return -EINVAL;
3093                 case NL80211_CHAN_WIDTH_5:
3094                 case NL80211_CHAN_WIDTH_10:
3095                 case NL80211_CHAN_WIDTH_20_NOHT:
3096                 case NL80211_CHAN_WIDTH_20:
3097                         break;
3098                 default:
3099                         return -EINVAL;
3100                 }
3101
3102                 /* changes into another band are not supported */
3103                 if (sdata->u.ibss.chandef.chan->band !=
3104                     params->chandef.chan->band)
3105                         return -EINVAL;
3106
3107                 /* see comments in the NL80211_IFTYPE_AP block */
3108                 if (params->count > 1) {
3109                         err = ieee80211_ibss_csa_beacon(sdata, params);
3110                         if (err < 0)
3111                                 return err;
3112                         *changed |= err;
3113                 }
3114
3115                 ieee80211_send_action_csa(sdata, params);
3116
3117                 break;
3118 #ifdef CONFIG_MAC80211_MESH
3119         case NL80211_IFTYPE_MESH_POINT: {
3120                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3121
3122                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3123                         return -EINVAL;
3124
3125                 /* changes into another band are not supported */
3126                 if (sdata->vif.bss_conf.chandef.chan->band !=
3127                     params->chandef.chan->band)
3128                         return -EINVAL;
3129
3130                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3131                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3132                         if (!ifmsh->pre_value)
3133                                 ifmsh->pre_value = 1;
3134                         else
3135                                 ifmsh->pre_value++;
3136                 }
3137
3138                 /* see comments in the NL80211_IFTYPE_AP block */
3139                 if (params->count > 1) {
3140                         err = ieee80211_mesh_csa_beacon(sdata, params);
3141                         if (err < 0) {
3142                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3143                                 return err;
3144                         }
3145                         *changed |= err;
3146                 }
3147
3148                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3149                         ieee80211_send_action_csa(sdata, params);
3150
3151                 break;
3152                 }
3153 #endif
3154         default:
3155                 return -EOPNOTSUPP;
3156         }
3157
3158         return 0;
3159 }
3160
3161 static int
3162 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3163                            struct cfg80211_csa_settings *params)
3164 {
3165         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3166         struct ieee80211_local *local = sdata->local;
3167         struct ieee80211_channel_switch ch_switch;
3168         struct ieee80211_chanctx_conf *conf;
3169         struct ieee80211_chanctx *chanctx;
3170         u32 changed = 0;
3171         int err;
3172
3173         sdata_assert_lock(sdata);
3174         lockdep_assert_held(&local->mtx);
3175
3176         if (!list_empty(&local->roc_list) || local->scanning)
3177                 return -EBUSY;
3178
3179         if (sdata->wdev.cac_started)
3180                 return -EBUSY;
3181
3182         if (cfg80211_chandef_identical(&params->chandef,
3183                                        &sdata->vif.bss_conf.chandef))
3184                 return -EINVAL;
3185
3186         /* don't allow another channel switch if one is already active. */
3187         if (sdata->vif.csa_active)
3188                 return -EBUSY;
3189
3190         mutex_lock(&local->chanctx_mtx);
3191         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3192                                          lockdep_is_held(&local->chanctx_mtx));
3193         if (!conf) {
3194                 err = -EBUSY;
3195                 goto out;
3196         }
3197
3198         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3199         if (!chanctx) {
3200                 err = -EBUSY;
3201                 goto out;
3202         }
3203
3204         ch_switch.timestamp = 0;
3205         ch_switch.device_timestamp = 0;
3206         ch_switch.block_tx = params->block_tx;
3207         ch_switch.chandef = params->chandef;
3208         ch_switch.count = params->count;
3209
3210         err = drv_pre_channel_switch(sdata, &ch_switch);
3211         if (err)
3212                 goto out;
3213
3214         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3215                                             chanctx->mode,
3216                                             params->radar_required);
3217         if (err)
3218                 goto out;
3219
3220         /* if reservation is invalid then this will fail */
3221         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3222         if (err) {
3223                 ieee80211_vif_unreserve_chanctx(sdata);
3224                 goto out;
3225         }
3226
3227         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3228         if (err) {
3229                 ieee80211_vif_unreserve_chanctx(sdata);
3230                 goto out;
3231         }
3232
3233         sdata->csa_chandef = params->chandef;
3234         sdata->csa_block_tx = params->block_tx;
3235         sdata->vif.csa_active = true;
3236
3237         if (sdata->csa_block_tx)
3238                 ieee80211_stop_vif_queues(local, sdata,
3239                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3240
3241         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3242                                           params->count);
3243
3244         if (changed) {
3245                 ieee80211_bss_info_change_notify(sdata, changed);
3246                 drv_channel_switch_beacon(sdata, &params->chandef);
3247         } else {
3248                 /* if the beacon didn't change, we can finalize immediately */
3249                 ieee80211_csa_finalize(sdata);
3250         }
3251
3252 out:
3253         mutex_unlock(&local->chanctx_mtx);
3254         return err;
3255 }
3256
3257 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3258                              struct cfg80211_csa_settings *params)
3259 {
3260         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3261         struct ieee80211_local *local = sdata->local;
3262         int err;
3263
3264         mutex_lock(&local->mtx);
3265         err = __ieee80211_channel_switch(wiphy, dev, params);
3266         mutex_unlock(&local->mtx);
3267
3268         return err;
3269 }
3270
3271 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3272                                               struct sk_buff *skb, u64 *cookie,
3273                                               gfp_t gfp)
3274 {
3275         unsigned long spin_flags;
3276         struct sk_buff *ack_skb;
3277         int id;
3278
3279         ack_skb = skb_copy(skb, gfp);
3280         if (!ack_skb)
3281                 return ERR_PTR(-ENOMEM);
3282
3283         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3284         id = idr_alloc(&local->ack_status_frames, ack_skb,
3285                        1, 0x10000, GFP_ATOMIC);
3286         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3287
3288         if (id < 0) {
3289                 kfree_skb(ack_skb);
3290                 return ERR_PTR(-ENOMEM);
3291         }
3292
3293         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3294
3295         *cookie = ieee80211_mgmt_tx_cookie(local);
3296         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3297
3298         return ack_skb;
3299 }
3300
3301 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3302                              struct cfg80211_mgmt_tx_params *params,
3303                              u64 *cookie)
3304 {
3305         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3306         struct ieee80211_local *local = sdata->local;
3307         struct sk_buff *skb, *ack_skb;
3308         struct sta_info *sta;
3309         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3310         bool need_offchan = false;
3311         u32 flags;
3312         int ret;
3313         u8 *data;
3314
3315         if (params->dont_wait_for_ack)
3316                 flags = IEEE80211_TX_CTL_NO_ACK;
3317         else
3318                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3319                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3320
3321         if (params->no_cck)
3322                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3323
3324         switch (sdata->vif.type) {
3325         case NL80211_IFTYPE_ADHOC:
3326                 if (!sdata->vif.bss_conf.ibss_joined)
3327                         need_offchan = true;
3328                 /* fall through */
3329 #ifdef CONFIG_MAC80211_MESH
3330         case NL80211_IFTYPE_MESH_POINT:
3331                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3332                     !sdata->u.mesh.mesh_id_len)
3333                         need_offchan = true;
3334                 /* fall through */
3335 #endif
3336         case NL80211_IFTYPE_AP:
3337         case NL80211_IFTYPE_AP_VLAN:
3338         case NL80211_IFTYPE_P2P_GO:
3339                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3340                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3341                     !rcu_access_pointer(sdata->bss->beacon))
3342                         need_offchan = true;
3343                 if (!ieee80211_is_action(mgmt->frame_control) ||
3344                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3345                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3346                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3347                         break;
3348                 rcu_read_lock();
3349                 sta = sta_info_get(sdata, mgmt->da);
3350                 rcu_read_unlock();
3351                 if (!sta)
3352                         return -ENOLINK;
3353                 break;
3354         case NL80211_IFTYPE_STATION:
3355         case NL80211_IFTYPE_P2P_CLIENT:
3356                 sdata_lock(sdata);
3357                 if (!sdata->u.mgd.associated ||
3358                     (params->offchan && params->wait &&
3359                      local->ops->remain_on_channel &&
3360                      memcmp(sdata->u.mgd.associated->bssid,
3361                             mgmt->bssid, ETH_ALEN)))
3362                         need_offchan = true;
3363                 sdata_unlock(sdata);
3364                 break;
3365         case NL80211_IFTYPE_P2P_DEVICE:
3366                 need_offchan = true;
3367                 break;
3368         default:
3369                 return -EOPNOTSUPP;
3370         }
3371
3372         /* configurations requiring offchan cannot work if no channel has been
3373          * specified
3374          */
3375         if (need_offchan && !params->chan)
3376                 return -EINVAL;
3377
3378         mutex_lock(&local->mtx);
3379
3380         /* Check if the operating channel is the requested channel */
3381         if (!need_offchan) {
3382                 struct ieee80211_chanctx_conf *chanctx_conf;
3383
3384                 rcu_read_lock();
3385                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3386
3387                 if (chanctx_conf) {
3388                         need_offchan = params->chan &&
3389                                        (params->chan !=
3390                                         chanctx_conf->def.chan);
3391                 } else if (!params->chan) {
3392                         ret = -EINVAL;
3393                         rcu_read_unlock();
3394                         goto out_unlock;
3395                 } else {
3396                         need_offchan = true;
3397                 }
3398                 rcu_read_unlock();
3399         }
3400
3401         if (need_offchan && !params->offchan) {
3402                 ret = -EBUSY;
3403                 goto out_unlock;
3404         }
3405
3406         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3407         if (!skb) {
3408                 ret = -ENOMEM;
3409                 goto out_unlock;
3410         }
3411         skb_reserve(skb, local->hw.extra_tx_headroom);
3412
3413         data = skb_put(skb, params->len);
3414         memcpy(data, params->buf, params->len);
3415
3416         /* Update CSA counters */
3417         if (sdata->vif.csa_active &&
3418             (sdata->vif.type == NL80211_IFTYPE_AP ||
3419              sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3420              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3421             params->n_csa_offsets) {
3422                 int i;
3423                 struct beacon_data *beacon = NULL;
3424
3425                 rcu_read_lock();
3426
3427                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3428                         beacon = rcu_dereference(sdata->u.ap.beacon);
3429                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3430                         beacon = rcu_dereference(sdata->u.ibss.presp);
3431                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3432                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3433
3434                 if (beacon)
3435                         for (i = 0; i < params->n_csa_offsets; i++)
3436                                 data[params->csa_offsets[i]] =
3437                                         beacon->csa_current_counter;
3438
3439                 rcu_read_unlock();
3440         }
3441
3442         IEEE80211_SKB_CB(skb)->flags = flags;
3443
3444         skb->dev = sdata->dev;
3445
3446         if (!params->dont_wait_for_ack) {
3447                 /* make a copy to preserve the frame contents
3448                  * in case of encryption.
3449                  */
3450                 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3451                                                  GFP_KERNEL);
3452                 if (IS_ERR(ack_skb)) {
3453                         ret = PTR_ERR(ack_skb);
3454                         kfree_skb(skb);
3455                         goto out_unlock;
3456                 }
3457         } else {
3458                 /* for cookie below */
3459                 ack_skb = skb;
3460         }
3461
3462         if (!need_offchan) {
3463                 ieee80211_tx_skb(sdata, skb);
3464                 ret = 0;
3465                 goto out_unlock;
3466         }
3467
3468         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3469                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3470         if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3471                 IEEE80211_SKB_CB(skb)->hw_queue =
3472                         local->hw.offchannel_tx_hw_queue;
3473
3474         /* This will handle all kinds of coalescing and immediate TX */
3475         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3476                                        params->wait, cookie, skb,
3477                                        IEEE80211_ROC_TYPE_MGMT_TX);
3478         if (ret)
3479                 kfree_skb(skb);
3480  out_unlock:
3481         mutex_unlock(&local->mtx);
3482         return ret;
3483 }
3484
3485 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3486                                          struct wireless_dev *wdev,
3487                                          u64 cookie)
3488 {
3489         struct ieee80211_local *local = wiphy_priv(wiphy);
3490
3491         return ieee80211_cancel_roc(local, cookie, true);
3492 }
3493
3494 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3495                                           struct wireless_dev *wdev,
3496                                           u16 frame_type, bool reg)
3497 {
3498         struct ieee80211_local *local = wiphy_priv(wiphy);
3499         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3500
3501         switch (frame_type) {
3502         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3503                 if (reg) {
3504                         local->probe_req_reg++;
3505                         sdata->vif.probe_req_reg++;
3506                 } else {
3507                         if (local->probe_req_reg)
3508                                 local->probe_req_reg--;
3509
3510                         if (sdata->vif.probe_req_reg)
3511                                 sdata->vif.probe_req_reg--;
3512                 }
3513
3514                 if (!local->open_count)
3515                         break;
3516
3517                 if (sdata->vif.probe_req_reg == 1)
3518                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3519                                                 FIF_PROBE_REQ);
3520                 else if (sdata->vif.probe_req_reg == 0)
3521                         drv_config_iface_filter(local, sdata, 0,
3522                                                 FIF_PROBE_REQ);
3523
3524                 ieee80211_configure_filter(local);
3525                 break;
3526         default:
3527                 break;
3528         }
3529 }
3530
3531 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3532 {
3533         struct ieee80211_local *local = wiphy_priv(wiphy);
3534
3535         if (local->started)
3536                 return -EOPNOTSUPP;
3537
3538         return drv_set_antenna(local, tx_ant, rx_ant);
3539 }
3540
3541 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3542 {
3543         struct ieee80211_local *local = wiphy_priv(wiphy);
3544
3545         return drv_get_antenna(local, tx_ant, rx_ant);
3546 }
3547
3548 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3549                                     struct net_device *dev,
3550                                     struct cfg80211_gtk_rekey_data *data)
3551 {
3552         struct ieee80211_local *local = wiphy_priv(wiphy);
3553         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3554
3555         if (!local->ops->set_rekey_data)
3556                 return -EOPNOTSUPP;
3557
3558         drv_set_rekey_data(local, sdata, data);
3559
3560         return 0;
3561 }
3562
3563 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3564                                   const u8 *peer, u64 *cookie)
3565 {
3566         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3567         struct ieee80211_local *local = sdata->local;
3568         struct ieee80211_qos_hdr *nullfunc;
3569         struct sk_buff *skb, *ack_skb;
3570         int size = sizeof(*nullfunc);
3571         __le16 fc;
3572         bool qos;
3573         struct ieee80211_tx_info *info;
3574         struct sta_info *sta;
3575         struct ieee80211_chanctx_conf *chanctx_conf;
3576         enum ieee80211_band band;
3577         int ret;
3578
3579         /* the lock is needed to assign the cookie later */
3580         mutex_lock(&local->mtx);
3581
3582         rcu_read_lock();
3583         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3584         if (WARN_ON(!chanctx_conf)) {
3585                 ret = -EINVAL;
3586                 goto unlock;
3587         }
3588         band = chanctx_conf->def.chan->band;
3589         sta = sta_info_get_bss(sdata, peer);
3590         if (sta) {
3591                 qos = sta->sta.wme;
3592         } else {
3593                 ret = -ENOLINK;
3594                 goto unlock;
3595         }
3596
3597         if (qos) {
3598                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3599                                  IEEE80211_STYPE_QOS_NULLFUNC |
3600                                  IEEE80211_FCTL_FROMDS);
3601         } else {
3602                 size -= 2;
3603                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3604                                  IEEE80211_STYPE_NULLFUNC |
3605                                  IEEE80211_FCTL_FROMDS);
3606         }
3607
3608         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3609         if (!skb) {
3610                 ret = -ENOMEM;
3611                 goto unlock;
3612         }
3613
3614         skb->dev = dev;
3615
3616         skb_reserve(skb, local->hw.extra_tx_headroom);
3617
3618         nullfunc = (void *) skb_put(skb, size);
3619         nullfunc->frame_control = fc;
3620         nullfunc->duration_id = 0;
3621         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3622         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3623         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3624         nullfunc->seq_ctrl = 0;
3625
3626         info = IEEE80211_SKB_CB(skb);
3627
3628         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3629                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3630         info->band = band;
3631
3632         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3633         skb->priority = 7;
3634         if (qos)
3635                 nullfunc->qos_ctrl = cpu_to_le16(7);
3636
3637         ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3638         if (IS_ERR(ack_skb)) {
3639                 kfree_skb(skb);
3640                 ret = PTR_ERR(ack_skb);
3641                 goto unlock;
3642         }
3643
3644         local_bh_disable();
3645         ieee80211_xmit(sdata, sta, skb);
3646         local_bh_enable();
3647
3648         ret = 0;
3649 unlock:
3650         rcu_read_unlock();
3651         mutex_unlock(&local->mtx);
3652
3653         return ret;
3654 }
3655
3656 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3657                                      struct wireless_dev *wdev,
3658                                      struct cfg80211_chan_def *chandef)
3659 {
3660         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3661         struct ieee80211_local *local = wiphy_priv(wiphy);
3662         struct ieee80211_chanctx_conf *chanctx_conf;
3663         int ret = -ENODATA;
3664
3665         rcu_read_lock();
3666         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3667         if (chanctx_conf) {
3668                 *chandef = sdata->vif.bss_conf.chandef;
3669                 ret = 0;
3670         } else if (local->open_count > 0 &&
3671                    local->open_count == local->monitors &&
3672                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3673                 if (local->use_chanctx)
3674                         *chandef = local->monitor_chandef;
3675                 else
3676                         *chandef = local->_oper_chandef;
3677                 ret = 0;
3678         }
3679         rcu_read_unlock();
3680
3681         return ret;
3682 }
3683
3684 #ifdef CONFIG_PM
3685 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3686 {
3687         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3688 }
3689 #endif
3690
3691 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3692                                  struct net_device *dev,
3693                                  struct cfg80211_qos_map *qos_map)
3694 {
3695         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3696         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3697
3698         if (qos_map) {
3699                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3700                 if (!new_qos_map)
3701                         return -ENOMEM;
3702                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3703         } else {
3704                 /* A NULL qos_map was passed to disable QoS mapping */
3705                 new_qos_map = NULL;
3706         }
3707
3708         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3709         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3710         if (old_qos_map)
3711                 kfree_rcu(old_qos_map, rcu_head);
3712
3713         return 0;
3714 }
3715
3716 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3717                                       struct net_device *dev,
3718                                       struct cfg80211_chan_def *chandef)
3719 {
3720         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3721         int ret;
3722         u32 changed = 0;
3723
3724         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3725         if (ret == 0)
3726                 ieee80211_bss_info_change_notify(sdata, changed);
3727
3728         return ret;
3729 }
3730
3731 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3732                                u8 tsid, const u8 *peer, u8 up,
3733                                u16 admitted_time)
3734 {
3735         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3736         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3737         int ac = ieee802_1d_to_ac[up];
3738
3739         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3740                 return -EOPNOTSUPP;
3741
3742         if (!(sdata->wmm_acm & BIT(up)))
3743                 return -EINVAL;
3744
3745         if (ifmgd->tx_tspec[ac].admitted_time)
3746                 return -EBUSY;
3747
3748         if (admitted_time) {
3749                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3750                 ifmgd->tx_tspec[ac].tsid = tsid;
3751                 ifmgd->tx_tspec[ac].up = up;
3752         }
3753
3754         return 0;
3755 }
3756
3757 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3758                                u8 tsid, const u8 *peer)
3759 {
3760         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3761         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3762         struct ieee80211_local *local = wiphy_priv(wiphy);
3763         int ac;
3764
3765         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3766                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3767
3768                 /* skip unused entries */
3769                 if (!tx_tspec->admitted_time)
3770                         continue;
3771
3772                 if (tx_tspec->tsid != tsid)
3773                         continue;
3774
3775                 /* due to this new packets will be reassigned to non-ACM ACs */
3776                 tx_tspec->up = -1;
3777
3778                 /* Make sure that all packets have been sent to avoid to
3779                  * restore the QoS params on packets that are still on the
3780                  * queues.
3781                  */
3782                 synchronize_net();
3783                 ieee80211_flush_queues(local, sdata, false);
3784
3785                 /* restore the normal QoS parameters
3786                  * (unconditionally to avoid races)
3787                  */
3788                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3789                 tx_tspec->downgraded = false;
3790                 ieee80211_sta_handle_tspec_ac_params(sdata);
3791
3792                 /* finally clear all the data */
3793                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3794
3795                 return 0;
3796         }
3797
3798         return -ENOENT;
3799 }
3800
3801 const struct cfg80211_ops mac80211_config_ops = {
3802         .add_virtual_intf = ieee80211_add_iface,
3803         .del_virtual_intf = ieee80211_del_iface,
3804         .change_virtual_intf = ieee80211_change_iface,
3805         .start_p2p_device = ieee80211_start_p2p_device,
3806         .stop_p2p_device = ieee80211_stop_p2p_device,
3807         .add_key = ieee80211_add_key,
3808         .del_key = ieee80211_del_key,
3809         .get_key = ieee80211_get_key,
3810         .set_default_key = ieee80211_config_default_key,
3811         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3812         .start_ap = ieee80211_start_ap,
3813         .change_beacon = ieee80211_change_beacon,
3814         .stop_ap = ieee80211_stop_ap,
3815         .add_station = ieee80211_add_station,
3816         .del_station = ieee80211_del_station,
3817         .change_station = ieee80211_change_station,
3818         .get_station = ieee80211_get_station,
3819         .dump_station = ieee80211_dump_station,
3820         .dump_survey = ieee80211_dump_survey,
3821 #ifdef CONFIG_MAC80211_MESH
3822         .add_mpath = ieee80211_add_mpath,
3823         .del_mpath = ieee80211_del_mpath,
3824         .change_mpath = ieee80211_change_mpath,
3825         .get_mpath = ieee80211_get_mpath,
3826         .dump_mpath = ieee80211_dump_mpath,
3827         .get_mpp = ieee80211_get_mpp,
3828         .dump_mpp = ieee80211_dump_mpp,
3829         .update_mesh_config = ieee80211_update_mesh_config,
3830         .get_mesh_config = ieee80211_get_mesh_config,
3831         .join_mesh = ieee80211_join_mesh,
3832         .leave_mesh = ieee80211_leave_mesh,
3833 #endif
3834         .join_ocb = ieee80211_join_ocb,
3835         .leave_ocb = ieee80211_leave_ocb,
3836         .change_bss = ieee80211_change_bss,
3837         .set_txq_params = ieee80211_set_txq_params,
3838         .set_monitor_channel = ieee80211_set_monitor_channel,
3839         .suspend = ieee80211_suspend,
3840         .resume = ieee80211_resume,
3841         .scan = ieee80211_scan,
3842         .sched_scan_start = ieee80211_sched_scan_start,
3843         .sched_scan_stop = ieee80211_sched_scan_stop,
3844         .auth = ieee80211_auth,
3845         .assoc = ieee80211_assoc,
3846         .deauth = ieee80211_deauth,
3847         .disassoc = ieee80211_disassoc,
3848         .join_ibss = ieee80211_join_ibss,
3849         .leave_ibss = ieee80211_leave_ibss,
3850         .set_mcast_rate = ieee80211_set_mcast_rate,
3851         .set_wiphy_params = ieee80211_set_wiphy_params,
3852         .set_tx_power = ieee80211_set_tx_power,
3853         .get_tx_power = ieee80211_get_tx_power,
3854         .set_wds_peer = ieee80211_set_wds_peer,
3855         .rfkill_poll = ieee80211_rfkill_poll,
3856         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3857         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3858         .set_power_mgmt = ieee80211_set_power_mgmt,
3859         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3860         .remain_on_channel = ieee80211_remain_on_channel,
3861         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3862         .mgmt_tx = ieee80211_mgmt_tx,
3863         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3864         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3865         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3866         .set_antenna = ieee80211_set_antenna,
3867         .get_antenna = ieee80211_get_antenna,
3868         .set_rekey_data = ieee80211_set_rekey_data,
3869         .tdls_oper = ieee80211_tdls_oper,
3870         .tdls_mgmt = ieee80211_tdls_mgmt,
3871         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3872         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3873         .probe_client = ieee80211_probe_client,
3874         .set_noack_map = ieee80211_set_noack_map,
3875 #ifdef CONFIG_PM
3876         .set_wakeup = ieee80211_set_wakeup,
3877 #endif
3878         .get_channel = ieee80211_cfg_get_channel,
3879         .start_radar_detection = ieee80211_start_radar_detection,
3880         .channel_switch = ieee80211_channel_switch,
3881         .set_qos_map = ieee80211_set_qos_map,
3882         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3883         .add_tx_ts = ieee80211_add_tx_ts,
3884         .del_tx_ts = ieee80211_del_tx_ts,
3885 };