net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <[email protected]>
   5  * Copyright 2013-2014  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                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 365                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 366                         drv_get_key_seq(sdata->local, key, &kseq);
 367                         memcpy(seq, kseq.ccmp.pn, 6);
 368                 } else {
 369                         pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 370                         seq[0] = pn64;
 371                         seq[1] = pn64 >> 8;
 372                         seq[2] = pn64 >> 16;
 373                         seq[3] = pn64 >> 24;
 374                         seq[4] = pn64 >> 32;
 375                         seq[5] = pn64 >> 40;
 376                 }
 377                 params.seq = seq;
 378                 params.seq_len = 6;
 379                 break;
 380         case WLAN_CIPHER_SUITE_AES_CMAC:
 381         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 382                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 383                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 384                         drv_get_key_seq(sdata->local, key, &kseq);
 385                         memcpy(seq, kseq.aes_cmac.pn, 6);
 386                 } else {
 387                         pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 388                         seq[0] = pn64;
 389                         seq[1] = pn64 >> 8;
 390                         seq[2] = pn64 >> 16;
 391                         seq[3] = pn64 >> 24;
 392                         seq[4] = pn64 >> 32;
 393                         seq[5] = pn64 >> 40;
 394                 }
 395                 params.seq = seq;
 396                 params.seq_len = 6;
 397                 break;
 398         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 399         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 400                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 401                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 402                         drv_get_key_seq(sdata->local, key, &kseq);
 403                         memcpy(seq, kseq.aes_gmac.pn, 6);
 404                 } else {
 405                         pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
 406                         seq[0] = pn64;
 407                         seq[1] = pn64 >> 8;
 408                         seq[2] = pn64 >> 16;
 409                         seq[3] = pn64 >> 24;
 410                         seq[4] = pn64 >> 32;
 411                         seq[5] = pn64 >> 40;
 412                 }
 413                 params.seq = seq;
 414                 params.seq_len = 6;
 415                 break;
 416         case WLAN_CIPHER_SUITE_GCMP:
 417         case WLAN_CIPHER_SUITE_GCMP_256:
 418                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 419                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 420                         drv_get_key_seq(sdata->local, key, &kseq);
 421                         memcpy(seq, kseq.gcmp.pn, 6);
 422                 } else {
 423                         pn64 = atomic64_read(&key->u.gcmp.tx_pn);
 424                         seq[0] = pn64;
 425                         seq[1] = pn64 >> 8;
 426                         seq[2] = pn64 >> 16;
 427                         seq[3] = pn64 >> 24;
 428                         seq[4] = pn64 >> 32;
 429                         seq[5] = pn64 >> 40;
 430                 }
 431                 params.seq = seq;
 432                 params.seq_len = 6;
 433                 break;
 434         default:
 435                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 436                         break;
 437                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 438                         break;
 439                 drv_get_key_seq(sdata->local, key, &kseq);
 440                 params.seq = kseq.hw.seq;
 441                 params.seq_len = kseq.hw.seq_len;
 442                 break;
 443         }
 444
 445         params.key = key->conf.key;
 446         params.key_len = key->conf.keylen;
 447
 448         callback(cookie, &params);
 449         err = 0;
 450
 451  out:
 452         rcu_read_unlock();
 453         return err;
 454 }
 455
 456 static int ieee80211_config_default_key(struct wiphy *wiphy,
 457                                         struct net_device *dev,
 458                                         u8 key_idx, bool uni,
 459                                         bool multi)
 460 {
 461         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 462
 463         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 464
 465         return 0;
 466 }
 467
 468 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 469                                              struct net_device *dev,
 470                                              u8 key_idx)
 471 {
 472         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 473
 474         ieee80211_set_default_mgmt_key(sdata, key_idx);
 475
 476         return 0;
 477 }
 478
 479 void sta_set_rate_info_tx(struct sta_info *sta,
 480                           const struct ieee80211_tx_rate *rate,
 481                           struct rate_info *rinfo)
 482 {
 483         rinfo->flags = 0;
 484         if (rate->flags & IEEE80211_TX_RC_MCS) {
 485                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 486                 rinfo->mcs = rate->idx;
 487         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 488                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 489                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 490                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 491         } else {
 492                 struct ieee80211_supported_band *sband;
 493                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 494                 u16 brate;
 495
 496                 sband = sta->local->hw.wiphy->bands[
 497                                 ieee80211_get_sdata_band(sta->sdata)];
 498                 brate = sband->bitrates[rate->idx].bitrate;
 499                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 500         }
 501         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 502                 rinfo->bw = RATE_INFO_BW_40;
 503         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 504                 rinfo->bw = RATE_INFO_BW_80;
 505         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 506                 rinfo->bw = RATE_INFO_BW_160;
 507         else
 508                 rinfo->bw = RATE_INFO_BW_20;
 509         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 510                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 511 }
 512
 513 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 514 {
 515         rinfo->flags = 0;
 516
 517         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 518                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 519                 rinfo->mcs = sta->last_rx_rate_idx;
 520         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 521                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 522                 rinfo->nss = sta->last_rx_rate_vht_nss;
 523                 rinfo->mcs = sta->last_rx_rate_idx;
 524         } else {
 525                 struct ieee80211_supported_band *sband;
 526                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 527                 u16 brate;
 528
 529                 sband = sta->local->hw.wiphy->bands[
 530                                 ieee80211_get_sdata_band(sta->sdata)];
 531                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 532                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 533         }
 534
 535         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 536                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 537
 538         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 539                 rinfo->bw = RATE_INFO_BW_5;
 540         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 541                 rinfo->bw = RATE_INFO_BW_10;
 542         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 543                 rinfo->bw = RATE_INFO_BW_40;
 544         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 545                 rinfo->bw = RATE_INFO_BW_80;
 546         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 547                 rinfo->bw = RATE_INFO_BW_160;
 548         else
 549                 rinfo->bw = RATE_INFO_BW_20;
 550 }
 551
 552 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 553                                   int idx, u8 *mac, struct station_info *sinfo)
 554 {
 555         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 556         struct ieee80211_local *local = sdata->local;
 557         struct sta_info *sta;
 558         int ret = -ENOENT;
 559
 560         mutex_lock(&local->sta_mtx);
 561
 562         sta = sta_info_get_by_idx(sdata, idx);
 563         if (sta) {
 564                 ret = 0;
 565                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 566                 sta_set_sinfo(sta, sinfo);
 567         }
 568
 569         mutex_unlock(&local->sta_mtx);
 570
 571         return ret;
 572 }
 573
 574 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 575                                  int idx, struct survey_info *survey)
 576 {
 577         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 578
 579         return drv_get_survey(local, idx, survey);
 580 }
 581
 582 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 583                                  const u8 *mac, struct station_info *sinfo)
 584 {
 585         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 586         struct ieee80211_local *local = sdata->local;
 587         struct sta_info *sta;
 588         int ret = -ENOENT;
 589
 590         mutex_lock(&local->sta_mtx);
 591
 592         sta = sta_info_get_bss(sdata, mac);
 593         if (sta) {
 594                 ret = 0;
 595                 sta_set_sinfo(sta, sinfo);
 596         }
 597
 598         mutex_unlock(&local->sta_mtx);
 599
 600         return ret;
 601 }
 602
 603 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 604                                          struct cfg80211_chan_def *chandef)
 605 {
 606         struct ieee80211_local *local = wiphy_priv(wiphy);
 607         struct ieee80211_sub_if_data *sdata;
 608         int ret = 0;
 609
 610         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 611                 return 0;
 612
 613         mutex_lock(&local->mtx);
 614         mutex_lock(&local->iflist_mtx);
 615         if (local->use_chanctx) {
 616                 sdata = rcu_dereference_protected(
 617                                 local->monitor_sdata,
 618                                 lockdep_is_held(&local->iflist_mtx));
 619                 if (sdata) {
 620                         ieee80211_vif_release_channel(sdata);
 621                         ret = ieee80211_vif_use_channel(sdata, chandef,
 622                                         IEEE80211_CHANCTX_EXCLUSIVE);
 623                 }
 624         } else if (local->open_count == local->monitors) {
 625                 local->_oper_chandef = *chandef;
 626                 ieee80211_hw_config(local, 0);
 627         }
 628
 629         if (ret == 0)
 630                 local->monitor_chandef = *chandef;
 631         mutex_unlock(&local->iflist_mtx);
 632         mutex_unlock(&local->mtx);
 633
 634         return ret;
 635 }
 636
 637 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 638                                     const u8 *resp, size_t resp_len,
 639                                     const struct ieee80211_csa_settings *csa)
 640 {
 641         struct probe_resp *new, *old;
 642
 643         if (!resp || !resp_len)
 644                 return 1;
 645
 646         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 647
 648         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 649         if (!new)
 650                 return -ENOMEM;
 651
 652         new->len = resp_len;
 653         memcpy(new->data, resp, resp_len);
 654
 655         if (csa)
 656                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 657                        csa->n_counter_offsets_presp *
 658                        sizeof(new->csa_counter_offsets[0]));
 659
 660         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 661         if (old)
 662                 kfree_rcu(old, rcu_head);
 663
 664         return 0;
 665 }
 666
 667 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 668                                    struct cfg80211_beacon_data *params,
 669                                    const struct ieee80211_csa_settings *csa)
 670 {
 671         struct beacon_data *new, *old;
 672         int new_head_len, new_tail_len;
 673         int size, err;
 674         u32 changed = BSS_CHANGED_BEACON;
 675
 676         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 677
 678
 679         /* Need to have a beacon head if we don't have one yet */
 680         if (!params->head && !old)
 681                 return -EINVAL;
 682
 683         /* new or old head? */
 684         if (params->head)
 685                 new_head_len = params->head_len;
 686         else
 687                 new_head_len = old->head_len;
 688
 689         /* new or old tail? */
 690         if (params->tail || !old)
 691                 /* params->tail_len will be zero for !params->tail */
 692                 new_tail_len = params->tail_len;
 693         else
 694                 new_tail_len = old->tail_len;
 695
 696         size = sizeof(*new) + new_head_len + new_tail_len;
 697
 698         new = kzalloc(size, GFP_KERNEL);
 699         if (!new)
 700                 return -ENOMEM;
 701
 702         /* start filling the new info now */
 703
 704         /*
 705          * pointers go into the block we allocated,
 706          * memory is | beacon_data | head | tail |
 707          */
 708         new->head = ((u8 *) new) + sizeof(*new);
 709         new->tail = new->head + new_head_len;
 710         new->head_len = new_head_len;
 711         new->tail_len = new_tail_len;
 712
 713         if (csa) {
 714                 new->csa_current_counter = csa->count;
 715                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 716                        csa->n_counter_offsets_beacon *
 717                        sizeof(new->csa_counter_offsets[0]));
 718         }
 719
 720         /* copy in head */
 721         if (params->head)
 722                 memcpy(new->head, params->head, new_head_len);
 723         else
 724                 memcpy(new->head, old->head, new_head_len);
 725
 726         /* copy in optional tail */
 727         if (params->tail)
 728                 memcpy(new->tail, params->tail, new_tail_len);
 729         else
 730                 if (old)
 731                         memcpy(new->tail, old->tail, new_tail_len);
 732
 733         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 734                                        params->probe_resp_len, csa);
 735         if (err < 0)
 736                 return err;
 737         if (err == 0)
 738                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 739
 740         rcu_assign_pointer(sdata->u.ap.beacon, new);
 741
 742         if (old)
 743                 kfree_rcu(old, rcu_head);
 744
 745         return changed;
 746 }
 747
 748 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 749                               struct cfg80211_ap_settings *params)
 750 {
 751         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 752         struct ieee80211_local *local = sdata->local;
 753         struct beacon_data *old;
 754         struct ieee80211_sub_if_data *vlan;
 755         u32 changed = BSS_CHANGED_BEACON_INT |
 756                       BSS_CHANGED_BEACON_ENABLED |
 757                       BSS_CHANGED_BEACON |
 758                       BSS_CHANGED_SSID |
 759                       BSS_CHANGED_P2P_PS |
 760                       BSS_CHANGED_TXPOWER;
 761         int err;
 762
 763         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 764         if (old)
 765                 return -EALREADY;
 766
 767         switch (params->smps_mode) {
 768         case NL80211_SMPS_OFF:
 769                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 770                 break;
 771         case NL80211_SMPS_STATIC:
 772                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 773                 break;
 774         case NL80211_SMPS_DYNAMIC:
 775                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 776                 break;
 777         default:
 778                 return -EINVAL;
 779         }
 780         sdata->needed_rx_chains = sdata->local->rx_chains;
 781
 782         mutex_lock(&local->mtx);
 783         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 784                                         IEEE80211_CHANCTX_SHARED);
 785         if (!err)
 786                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 787         mutex_unlock(&local->mtx);
 788         if (err)
 789                 return err;
 790
 791         /*
 792          * Apply control port protocol, this allows us to
 793          * not encrypt dynamic WEP control frames.
 794          */
 795         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 796         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 797         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 798                                                         &params->crypto,
 799                                                         sdata->vif.type);
 800
 801         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 802                 vlan->control_port_protocol =
 803                         params->crypto.control_port_ethertype;
 804                 vlan->control_port_no_encrypt =
 805                         params->crypto.control_port_no_encrypt;
 806                 vlan->encrypt_headroom =
 807                         ieee80211_cs_headroom(sdata->local,
 808                                               &params->crypto,
 809                                               vlan->vif.type);
 810         }
 811
 812         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 813         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 814         sdata->vif.bss_conf.enable_beacon = true;
 815
 816         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 817         if (params->ssid_len)
 818                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 819                        params->ssid_len);
 820         sdata->vif.bss_conf.hidden_ssid =
 821                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 822
 823         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 824                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 825         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 826                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 827         if (params->p2p_opp_ps)
 828                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 829                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 830
 831         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 832         if (err < 0) {
 833                 ieee80211_vif_release_channel(sdata);
 834                 return err;
 835         }
 836         changed |= err;
 837
 838         err = drv_start_ap(sdata->local, sdata);
 839         if (err) {
 840                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 841
 842                 if (old)
 843                         kfree_rcu(old, rcu_head);
 844                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 845                 ieee80211_vif_release_channel(sdata);
 846                 return err;
 847         }
 848
 849         ieee80211_recalc_dtim(local, sdata);
 850         ieee80211_bss_info_change_notify(sdata, changed);
 851
 852         netif_carrier_on(dev);
 853         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 854                 netif_carrier_on(vlan->dev);
 855
 856         return 0;
 857 }
 858
 859 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 860                                    struct cfg80211_beacon_data *params)
 861 {
 862         struct ieee80211_sub_if_data *sdata;
 863         struct beacon_data *old;
 864         int err;
 865
 866         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 867         sdata_assert_lock(sdata);
 868
 869         /* don't allow changing the beacon while CSA is in place - offset
 870          * of channel switch counter may change
 871          */
 872         if (sdata->vif.csa_active)
 873                 return -EBUSY;
 874
 875         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 876         if (!old)
 877                 return -ENOENT;
 878
 879         err = ieee80211_assign_beacon(sdata, params, NULL);
 880         if (err < 0)
 881                 return err;
 882         ieee80211_bss_info_change_notify(sdata, err);
 883         return 0;
 884 }
 885
 886 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 887 {
 888         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 889         struct ieee80211_sub_if_data *vlan;
 890         struct ieee80211_local *local = sdata->local;
 891         struct beacon_data *old_beacon;
 892         struct probe_resp *old_probe_resp;
 893         struct cfg80211_chan_def chandef;
 894
 895         sdata_assert_lock(sdata);
 896
 897         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 898         if (!old_beacon)
 899                 return -ENOENT;
 900         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 901
 902         /* abort any running channel switch */
 903         mutex_lock(&local->mtx);
 904         sdata->vif.csa_active = false;
 905         if (sdata->csa_block_tx) {
 906                 ieee80211_wake_vif_queues(local, sdata,
 907                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 908                 sdata->csa_block_tx = false;
 909         }
 910
 911         mutex_unlock(&local->mtx);
 912
 913         kfree(sdata->u.ap.next_beacon);
 914         sdata->u.ap.next_beacon = NULL;
 915
 916         /* turn off carrier for this interface and dependent VLANs */
 917         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 918                 netif_carrier_off(vlan->dev);
 919         netif_carrier_off(dev);
 920
 921         /* remove beacon and probe response */
 922         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 923         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 924         kfree_rcu(old_beacon, rcu_head);
 925         if (old_probe_resp)
 926                 kfree_rcu(old_probe_resp, rcu_head);
 927         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 928
 929         __sta_info_flush(sdata, true);
 930         ieee80211_free_keys(sdata, true);
 931
 932         sdata->vif.bss_conf.enable_beacon = false;
 933         sdata->vif.bss_conf.ssid_len = 0;
 934         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 935         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 936
 937         if (sdata->wdev.cac_started) {
 938                 chandef = sdata->vif.bss_conf.chandef;
 939                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 940                 cfg80211_cac_event(sdata->dev, &chandef,
 941                                    NL80211_RADAR_CAC_ABORTED,
 942                                    GFP_KERNEL);
 943         }
 944
 945         drv_stop_ap(sdata->local, sdata);
 946
 947         /* free all potentially still buffered bcast frames */
 948         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 949         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 950
 951         mutex_lock(&local->mtx);
 952         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 953         ieee80211_vif_release_channel(sdata);
 954         mutex_unlock(&local->mtx);
 955
 956         return 0;
 957 }
 958
 959 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 960 struct iapp_layer2_update {
 961         u8 da[ETH_ALEN];        /* broadcast */
 962         u8 sa[ETH_ALEN];        /* STA addr */
 963         __be16 len;             /* 6 */
 964         u8 dsap;                /* 0 */
 965         u8 ssap;                /* 0 */
 966         u8 control;
 967         u8 xid_info[3];
 968 } __packed;
 969
 970 static void ieee80211_send_layer2_update(struct sta_info *sta)
 971 {
 972         struct iapp_layer2_update *msg;
 973         struct sk_buff *skb;
 974
 975         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 976          * bridge devices */
 977
 978         skb = dev_alloc_skb(sizeof(*msg));
 979         if (!skb)
 980                 return;
 981         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 982
 983         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 984          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 985
 986         eth_broadcast_addr(msg->da);
 987         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 988         msg->len = htons(6);
 989         msg->dsap = 0;
 990         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 991         msg->control = 0xaf;    /* XID response lsb.1111F101.
 992                                  * F=0 (no poll command; unsolicited frame) */
 993         msg->xid_info[0] = 0x81;        /* XID format identifier */
 994         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 995         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 996
 997         skb->dev = sta->sdata->dev;
 998         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 999         memset(skb->cb, 0, sizeof(skb->cb));
1000         netif_rx_ni(skb);
1001 }
1002
1003 static int sta_apply_auth_flags(struct ieee80211_local *local,
1004                                 struct sta_info *sta,
1005                                 u32 mask, u32 set)
1006 {
1007         int ret;
1008
1009         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1010             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1011             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1012                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1013                 if (ret)
1014                         return ret;
1015         }
1016
1017         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1018             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1019             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1020                 /*
1021                  * When peer becomes associated, init rate control as
1022                  * well. Some drivers require rate control initialized
1023                  * before drv_sta_state() is called.
1024                  */
1025                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1026                         rate_control_rate_init(sta);
1027
1028                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1029                 if (ret)
1030                         return ret;
1031         }
1032
1033         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1034                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1035                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1036                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1037                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1038                 else
1039                         ret = 0;
1040                 if (ret)
1041                         return ret;
1042         }
1043
1044         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1045             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1046             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1047                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1048                 if (ret)
1049                         return ret;
1050         }
1051
1052         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1053             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1054             test_sta_flag(sta, WLAN_STA_AUTH)) {
1055                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1056                 if (ret)
1057                         return ret;
1058         }
1059
1060         return 0;
1061 }
1062
1063 static int sta_apply_parameters(struct ieee80211_local *local,
1064                                 struct sta_info *sta,
1065                                 struct station_parameters *params)
1066 {
1067         int ret = 0;
1068         struct ieee80211_supported_band *sband;
1069         struct ieee80211_sub_if_data *sdata = sta->sdata;
1070         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1071         u32 mask, set;
1072
1073         sband = local->hw.wiphy->bands[band];
1074
1075         mask = params->sta_flags_mask;
1076         set = params->sta_flags_set;
1077
1078         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1079                 /*
1080                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1081                  * API but must follow AUTHENTICATED for driver state.
1082                  */
1083                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1084                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1085                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1086                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1087         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1088                 /*
1089                  * TDLS -- everything follows authorized, but
1090                  * only becoming authorized is possible, not
1091                  * going back
1092                  */
1093                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1094                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1095                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1096                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1097                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1098                 }
1099         }
1100
1101         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1102             local->hw.queues >= IEEE80211_NUM_ACS)
1103                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1104
1105         /* auth flags will be set later for TDLS stations */
1106         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1107                 ret = sta_apply_auth_flags(local, sta, mask, set);
1108                 if (ret)
1109                         return ret;
1110         }
1111
1112         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1113                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1114                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1115                 else
1116                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1117         }
1118
1119         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1120                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1121                 if (set & BIT(NL80211_STA_FLAG_MFP))
1122                         set_sta_flag(sta, WLAN_STA_MFP);
1123                 else
1124                         clear_sta_flag(sta, WLAN_STA_MFP);
1125         }
1126
1127         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1128                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1129                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1130                 else
1131                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1132         }
1133
1134         /* mark TDLS channel switch support, if the AP allows it */
1135         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1136             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1137             params->ext_capab_len >= 4 &&
1138             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1139                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1140
1141         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1142                 sta->sta.uapsd_queues = params->uapsd_queues;
1143                 sta->sta.max_sp = params->max_sp;
1144         }
1145
1146         /*
1147          * cfg80211 validates this (1-2007) and allows setting the AID
1148          * only when creating a new station entry
1149          */
1150         if (params->aid)
1151                 sta->sta.aid = params->aid;
1152
1153         /*
1154          * Some of the following updates would be racy if called on an
1155          * existing station, via ieee80211_change_station(). However,
1156          * all such changes are rejected by cfg80211 except for updates
1157          * changing the supported rates on an existing but not yet used
1158          * TDLS peer.
1159          */
1160
1161         if (params->listen_interval >= 0)
1162                 sta->listen_interval = params->listen_interval;
1163
1164         if (params->supported_rates) {
1165                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1166                                          sband, params->supported_rates,
1167                                          params->supported_rates_len,
1168                                          &sta->sta.supp_rates[band]);
1169         }
1170
1171         if (params->ht_capa)
1172                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1173                                                   params->ht_capa, sta);
1174
1175         if (params->vht_capa)
1176                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1177                                                     params->vht_capa, sta);
1178
1179         if (params->opmode_notif_used) {
1180                 /* returned value is only needed for rc update, but the
1181                  * rc isn't initialized here yet, so ignore it
1182                  */
1183                 __ieee80211_vht_handle_opmode(sdata, sta,
1184                                               params->opmode_notif,
1185                                               band, false);
1186         }
1187
1188         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1189 #ifdef CONFIG_MAC80211_MESH
1190                 u32 changed = 0;
1191
1192                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1193                         switch (params->plink_state) {
1194                         case NL80211_PLINK_ESTAB:
1195                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1196                                         changed = mesh_plink_inc_estab_count(
1197                                                         sdata);
1198                                 sta->plink_state = params->plink_state;
1199
1200                                 ieee80211_mps_sta_status_update(sta);
1201                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1202                                               sdata->u.mesh.mshcfg.power_mode);
1203                                 break;
1204                         case NL80211_PLINK_LISTEN:
1205                         case NL80211_PLINK_BLOCKED:
1206                         case NL80211_PLINK_OPN_SNT:
1207                         case NL80211_PLINK_OPN_RCVD:
1208                         case NL80211_PLINK_CNF_RCVD:
1209                         case NL80211_PLINK_HOLDING:
1210                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1211                                         changed = mesh_plink_dec_estab_count(
1212                                                         sdata);
1213                                 sta->plink_state = params->plink_state;
1214
1215                                 ieee80211_mps_sta_status_update(sta);
1216                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1217                                                 NL80211_MESH_POWER_UNKNOWN);
1218                                 break;
1219                         default:
1220                                 /*  nothing  */
1221                                 break;
1222                         }
1223                 }
1224
1225                 switch (params->plink_action) {
1226                 case NL80211_PLINK_ACTION_NO_ACTION:
1227                         /* nothing */
1228                         break;
1229                 case NL80211_PLINK_ACTION_OPEN:
1230                         changed |= mesh_plink_open(sta);
1231                         break;
1232                 case NL80211_PLINK_ACTION_BLOCK:
1233                         changed |= mesh_plink_block(sta);
1234                         break;
1235                 }
1236
1237                 if (params->local_pm)
1238                         changed |=
1239                               ieee80211_mps_set_sta_local_pm(sta,
1240                                                              params->local_pm);
1241                 ieee80211_mbss_info_change_notify(sdata, changed);
1242 #endif
1243         }
1244
1245         /* set the STA state after all sta info from usermode has been set */
1246         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1247                 ret = sta_apply_auth_flags(local, sta, mask, set);
1248                 if (ret)
1249                         return ret;
1250         }
1251
1252         return 0;
1253 }
1254
1255 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1256                                  const u8 *mac,
1257                                  struct station_parameters *params)
1258 {
1259         struct ieee80211_local *local = wiphy_priv(wiphy);
1260         struct sta_info *sta;
1261         struct ieee80211_sub_if_data *sdata;
1262         int err;
1263         int layer2_update;
1264
1265         if (params->vlan) {
1266                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1267
1268                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1269                     sdata->vif.type != NL80211_IFTYPE_AP)
1270                         return -EINVAL;
1271         } else
1272                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1273
1274         if (ether_addr_equal(mac, sdata->vif.addr))
1275                 return -EINVAL;
1276
1277         if (is_multicast_ether_addr(mac))
1278                 return -EINVAL;
1279
1280         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1281         if (!sta)
1282                 return -ENOMEM;
1283
1284         /*
1285          * defaults -- if userspace wants something else we'll
1286          * change it accordingly in sta_apply_parameters()
1287          */
1288         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1289                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1290                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1291         } else {
1292                 sta->sta.tdls = true;
1293         }
1294
1295         err = sta_apply_parameters(local, sta, params);
1296         if (err) {
1297                 sta_info_free(local, sta);
1298                 return err;
1299         }
1300
1301         /*
1302          * for TDLS, rate control should be initialized only when
1303          * rates are known and station is marked authorized
1304          */
1305         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1306                 rate_control_rate_init(sta);
1307
1308         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1309                 sdata->vif.type == NL80211_IFTYPE_AP;
1310
1311         err = sta_info_insert_rcu(sta);
1312         if (err) {
1313                 rcu_read_unlock();
1314                 return err;
1315         }
1316
1317         if (layer2_update)
1318                 ieee80211_send_layer2_update(sta);
1319
1320         rcu_read_unlock();
1321
1322         return 0;
1323 }
1324
1325 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1326                                  struct station_del_parameters *params)
1327 {
1328         struct ieee80211_sub_if_data *sdata;
1329
1330         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1331
1332         if (params->mac)
1333                 return sta_info_destroy_addr_bss(sdata, params->mac);
1334
1335         sta_info_flush(sdata);
1336         return 0;
1337 }
1338
1339 static int ieee80211_change_station(struct wiphy *wiphy,
1340                                     struct net_device *dev, const u8 *mac,
1341                                     struct station_parameters *params)
1342 {
1343         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1344         struct ieee80211_local *local = wiphy_priv(wiphy);
1345         struct sta_info *sta;
1346         struct ieee80211_sub_if_data *vlansdata;
1347         enum cfg80211_station_type statype;
1348         int err;
1349
1350         mutex_lock(&local->sta_mtx);
1351
1352         sta = sta_info_get_bss(sdata, mac);
1353         if (!sta) {
1354                 err = -ENOENT;
1355                 goto out_err;
1356         }
1357
1358         switch (sdata->vif.type) {
1359         case NL80211_IFTYPE_MESH_POINT:
1360                 if (sdata->u.mesh.user_mpm)
1361                         statype = CFG80211_STA_MESH_PEER_USER;
1362                 else
1363                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1364                 break;
1365         case NL80211_IFTYPE_ADHOC:
1366                 statype = CFG80211_STA_IBSS;
1367                 break;
1368         case NL80211_IFTYPE_STATION:
1369                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1370                         statype = CFG80211_STA_AP_STA;
1371                         break;
1372                 }
1373                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1374                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1375                 else
1376                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1377                 break;
1378         case NL80211_IFTYPE_AP:
1379         case NL80211_IFTYPE_AP_VLAN:
1380                 statype = CFG80211_STA_AP_CLIENT;
1381                 break;
1382         default:
1383                 err = -EOPNOTSUPP;
1384                 goto out_err;
1385         }
1386
1387         err = cfg80211_check_station_change(wiphy, params, statype);
1388         if (err)
1389                 goto out_err;
1390
1391         if (params->vlan && params->vlan != sta->sdata->dev) {
1392                 bool prev_4addr = false;
1393                 bool new_4addr = false;
1394
1395                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1396
1397                 if (params->vlan->ieee80211_ptr->use_4addr) {
1398                         if (vlansdata->u.vlan.sta) {
1399                                 err = -EBUSY;
1400                                 goto out_err;
1401                         }
1402
1403                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1404                         new_4addr = true;
1405                 }
1406
1407                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1408                     sta->sdata->u.vlan.sta) {
1409                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1410                         prev_4addr = true;
1411                 }
1412
1413                 sta->sdata = vlansdata;
1414
1415                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1416                     prev_4addr != new_4addr) {
1417                         if (new_4addr)
1418                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1419                         else
1420                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1421                 }
1422
1423                 ieee80211_send_layer2_update(sta);
1424         }
1425
1426         err = sta_apply_parameters(local, sta, params);
1427         if (err)
1428                 goto out_err;
1429
1430         mutex_unlock(&local->sta_mtx);
1431
1432         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1433              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1434             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1435             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1436             sta_info_tx_streams(sta) != 1) {
1437                 ht_dbg(sta->sdata,
1438                        "%pM just authorized and MIMO capable - update SMPS\n",
1439                        sta->sta.addr);
1440                 ieee80211_send_smps_action(sta->sdata,
1441                         sta->sdata->bss->req_smps,
1442                         sta->sta.addr,
1443                         sta->sdata->vif.bss_conf.bssid);
1444         }
1445
1446         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1447             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1448                 ieee80211_recalc_ps(local, -1);
1449                 ieee80211_recalc_ps_vif(sdata);
1450         }
1451
1452         return 0;
1453 out_err:
1454         mutex_unlock(&local->sta_mtx);
1455         return err;
1456 }
1457
1458 #ifdef CONFIG_MAC80211_MESH
1459 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1460                                const u8 *dst, const u8 *next_hop)
1461 {
1462         struct ieee80211_sub_if_data *sdata;
1463         struct mesh_path *mpath;
1464         struct sta_info *sta;
1465
1466         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1467
1468         rcu_read_lock();
1469         sta = sta_info_get(sdata, next_hop);
1470         if (!sta) {
1471                 rcu_read_unlock();
1472                 return -ENOENT;
1473         }
1474
1475         mpath = mesh_path_add(sdata, dst);
1476         if (IS_ERR(mpath)) {
1477                 rcu_read_unlock();
1478                 return PTR_ERR(mpath);
1479         }
1480
1481         mesh_path_fix_nexthop(mpath, sta);
1482
1483         rcu_read_unlock();
1484         return 0;
1485 }
1486
1487 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1488                                const u8 *dst)
1489 {
1490         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1491
1492         if (dst)
1493                 return mesh_path_del(sdata, dst);
1494
1495         mesh_path_flush_by_iface(sdata);
1496         return 0;
1497 }
1498
1499 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1500                                   const u8 *dst, const u8 *next_hop)
1501 {
1502         struct ieee80211_sub_if_data *sdata;
1503         struct mesh_path *mpath;
1504         struct sta_info *sta;
1505
1506         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1507
1508         rcu_read_lock();
1509
1510         sta = sta_info_get(sdata, next_hop);
1511         if (!sta) {
1512                 rcu_read_unlock();
1513                 return -ENOENT;
1514         }
1515
1516         mpath = mesh_path_lookup(sdata, dst);
1517         if (!mpath) {
1518                 rcu_read_unlock();
1519                 return -ENOENT;
1520         }
1521
1522         mesh_path_fix_nexthop(mpath, sta);
1523
1524         rcu_read_unlock();
1525         return 0;
1526 }
1527
1528 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1529                             struct mpath_info *pinfo)
1530 {
1531         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1532
1533         if (next_hop_sta)
1534                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1535         else
1536                 eth_zero_addr(next_hop);
1537
1538         memset(pinfo, 0, sizeof(*pinfo));
1539
1540         pinfo->generation = mesh_paths_generation;
1541
1542         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1543                         MPATH_INFO_SN |
1544                         MPATH_INFO_METRIC |
1545                         MPATH_INFO_EXPTIME |
1546                         MPATH_INFO_DISCOVERY_TIMEOUT |
1547                         MPATH_INFO_DISCOVERY_RETRIES |
1548                         MPATH_INFO_FLAGS;
1549
1550         pinfo->frame_qlen = mpath->frame_queue.qlen;
1551         pinfo->sn = mpath->sn;
1552         pinfo->metric = mpath->metric;
1553         if (time_before(jiffies, mpath->exp_time))
1554                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1555         pinfo->discovery_timeout =
1556                         jiffies_to_msecs(mpath->discovery_timeout);
1557         pinfo->discovery_retries = mpath->discovery_retries;
1558         if (mpath->flags & MESH_PATH_ACTIVE)
1559                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1560         if (mpath->flags & MESH_PATH_RESOLVING)
1561                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1562         if (mpath->flags & MESH_PATH_SN_VALID)
1563                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1564         if (mpath->flags & MESH_PATH_FIXED)
1565                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1566         if (mpath->flags & MESH_PATH_RESOLVED)
1567                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1568 }
1569
1570 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1571                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1572
1573 {
1574         struct ieee80211_sub_if_data *sdata;
1575         struct mesh_path *mpath;
1576
1577         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1578
1579         rcu_read_lock();
1580         mpath = mesh_path_lookup(sdata, dst);
1581         if (!mpath) {
1582                 rcu_read_unlock();
1583                 return -ENOENT;
1584         }
1585         memcpy(dst, mpath->dst, ETH_ALEN);
1586         mpath_set_pinfo(mpath, next_hop, pinfo);
1587         rcu_read_unlock();
1588         return 0;
1589 }
1590
1591 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1592                                 int idx, u8 *dst, u8 *next_hop,
1593                                 struct mpath_info *pinfo)
1594 {
1595         struct ieee80211_sub_if_data *sdata;
1596         struct mesh_path *mpath;
1597
1598         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1599
1600         rcu_read_lock();
1601         mpath = mesh_path_lookup_by_idx(sdata, idx);
1602         if (!mpath) {
1603                 rcu_read_unlock();
1604                 return -ENOENT;
1605         }
1606         memcpy(dst, mpath->dst, ETH_ALEN);
1607         mpath_set_pinfo(mpath, next_hop, pinfo);
1608         rcu_read_unlock();
1609         return 0;
1610 }
1611
1612 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1613                           struct mpath_info *pinfo)
1614 {
1615         memset(pinfo, 0, sizeof(*pinfo));
1616         memcpy(mpp, mpath->mpp, ETH_ALEN);
1617
1618         pinfo->generation = mpp_paths_generation;
1619 }
1620
1621 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1622                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1623
1624 {
1625         struct ieee80211_sub_if_data *sdata;
1626         struct mesh_path *mpath;
1627
1628         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629
1630         rcu_read_lock();
1631         mpath = mpp_path_lookup(sdata, dst);
1632         if (!mpath) {
1633                 rcu_read_unlock();
1634                 return -ENOENT;
1635         }
1636         memcpy(dst, mpath->dst, ETH_ALEN);
1637         mpp_set_pinfo(mpath, mpp, pinfo);
1638         rcu_read_unlock();
1639         return 0;
1640 }
1641
1642 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1643                               int idx, u8 *dst, u8 *mpp,
1644                               struct mpath_info *pinfo)
1645 {
1646         struct ieee80211_sub_if_data *sdata;
1647         struct mesh_path *mpath;
1648
1649         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1650
1651         rcu_read_lock();
1652         mpath = mpp_path_lookup_by_idx(sdata, idx);
1653         if (!mpath) {
1654                 rcu_read_unlock();
1655                 return -ENOENT;
1656         }
1657         memcpy(dst, mpath->dst, ETH_ALEN);
1658         mpp_set_pinfo(mpath, mpp, pinfo);
1659         rcu_read_unlock();
1660         return 0;
1661 }
1662
1663 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1664                                 struct net_device *dev,
1665                                 struct mesh_config *conf)
1666 {
1667         struct ieee80211_sub_if_data *sdata;
1668         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1669
1670         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1671         return 0;
1672 }
1673
1674 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1675 {
1676         return (mask >> (parm-1)) & 0x1;
1677 }
1678
1679 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1680                 const struct mesh_setup *setup)
1681 {
1682         u8 *new_ie;
1683         const u8 *old_ie;
1684         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1685                                         struct ieee80211_sub_if_data, u.mesh);
1686
1687         /* allocate information elements */
1688         new_ie = NULL;
1689         old_ie = ifmsh->ie;
1690
1691         if (setup->ie_len) {
1692                 new_ie = kmemdup(setup->ie, setup->ie_len,
1693                                 GFP_KERNEL);
1694                 if (!new_ie)
1695                         return -ENOMEM;
1696         }
1697         ifmsh->ie_len = setup->ie_len;
1698         ifmsh->ie = new_ie;
1699         kfree(old_ie);
1700
1701         /* now copy the rest of the setup parameters */
1702         ifmsh->mesh_id_len = setup->mesh_id_len;
1703         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1704         ifmsh->mesh_sp_id = setup->sync_method;
1705         ifmsh->mesh_pp_id = setup->path_sel_proto;
1706         ifmsh->mesh_pm_id = setup->path_metric;
1707         ifmsh->user_mpm = setup->user_mpm;
1708         ifmsh->mesh_auth_id = setup->auth_id;
1709         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1710         if (setup->is_authenticated)
1711                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1712         if (setup->is_secure)
1713                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1714
1715         /* mcast rate setting in Mesh Node */
1716         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1717                                                 sizeof(setup->mcast_rate));
1718         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1719
1720         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1721         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1722
1723         return 0;
1724 }
1725
1726 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1727                                         struct net_device *dev, u32 mask,
1728                                         const struct mesh_config *nconf)
1729 {
1730         struct mesh_config *conf;
1731         struct ieee80211_sub_if_data *sdata;
1732         struct ieee80211_if_mesh *ifmsh;
1733
1734         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1735         ifmsh = &sdata->u.mesh;
1736
1737         /* Set the config options which we are interested in setting */
1738         conf = &(sdata->u.mesh.mshcfg);
1739         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1740                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1741         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1742                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1743         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1744                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1745         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1746                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1747         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1748                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1749         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1750                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1751         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1752                 conf->element_ttl = nconf->element_ttl;
1753         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1754                 if (ifmsh->user_mpm)
1755                         return -EBUSY;
1756                 conf->auto_open_plinks = nconf->auto_open_plinks;
1757         }
1758         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1759                 conf->dot11MeshNbrOffsetMaxNeighbor =
1760                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1761         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1762                 conf->dot11MeshHWMPmaxPREQretries =
1763                         nconf->dot11MeshHWMPmaxPREQretries;
1764         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1765                 conf->path_refresh_time = nconf->path_refresh_time;
1766         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1767                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1768         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1769                 conf->dot11MeshHWMPactivePathTimeout =
1770                         nconf->dot11MeshHWMPactivePathTimeout;
1771         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1772                 conf->dot11MeshHWMPpreqMinInterval =
1773                         nconf->dot11MeshHWMPpreqMinInterval;
1774         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1775                 conf->dot11MeshHWMPperrMinInterval =
1776                         nconf->dot11MeshHWMPperrMinInterval;
1777         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1778                            mask))
1779                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1780                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1781         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1782                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1783                 ieee80211_mesh_root_setup(ifmsh);
1784         }
1785         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1786                 /* our current gate announcement implementation rides on root
1787                  * announcements, so require this ifmsh to also be a root node
1788                  * */
1789                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1790                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1791                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1792                         ieee80211_mesh_root_setup(ifmsh);
1793                 }
1794                 conf->dot11MeshGateAnnouncementProtocol =
1795                         nconf->dot11MeshGateAnnouncementProtocol;
1796         }
1797         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1798                 conf->dot11MeshHWMPRannInterval =
1799                         nconf->dot11MeshHWMPRannInterval;
1800         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1801                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1802         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1803                 /* our RSSI threshold implementation is supported only for
1804                  * devices that report signal in dBm.
1805                  */
1806                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1807                         return -ENOTSUPP;
1808                 conf->rssi_threshold = nconf->rssi_threshold;
1809         }
1810         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1811                 conf->ht_opmode = nconf->ht_opmode;
1812                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1813                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1814         }
1815         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1816                 conf->dot11MeshHWMPactivePathToRootTimeout =
1817                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1818         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1819                 conf->dot11MeshHWMProotInterval =
1820                         nconf->dot11MeshHWMProotInterval;
1821         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1822                 conf->dot11MeshHWMPconfirmationInterval =
1823                         nconf->dot11MeshHWMPconfirmationInterval;
1824         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1825                 conf->power_mode = nconf->power_mode;
1826                 ieee80211_mps_local_status_update(sdata);
1827         }
1828         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1829                 conf->dot11MeshAwakeWindowDuration =
1830                         nconf->dot11MeshAwakeWindowDuration;
1831         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1832                 conf->plink_timeout = nconf->plink_timeout;
1833         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1834         return 0;
1835 }
1836
1837 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1838                                const struct mesh_config *conf,
1839                                const struct mesh_setup *setup)
1840 {
1841         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1843         int err;
1844
1845         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1846         err = copy_mesh_setup(ifmsh, setup);
1847         if (err)
1848                 return err;
1849
1850         /* can mesh use other SMPS modes? */
1851         sdata->smps_mode = IEEE80211_SMPS_OFF;
1852         sdata->needed_rx_chains = sdata->local->rx_chains;
1853
1854         mutex_lock(&sdata->local->mtx);
1855         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1856                                         IEEE80211_CHANCTX_SHARED);
1857         mutex_unlock(&sdata->local->mtx);
1858         if (err)
1859                 return err;
1860
1861         return ieee80211_start_mesh(sdata);
1862 }
1863
1864 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1865 {
1866         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1867
1868         ieee80211_stop_mesh(sdata);
1869         mutex_lock(&sdata->local->mtx);
1870         ieee80211_vif_release_channel(sdata);
1871         mutex_unlock(&sdata->local->mtx);
1872
1873         return 0;
1874 }
1875 #endif
1876
1877 static int ieee80211_change_bss(struct wiphy *wiphy,
1878                                 struct net_device *dev,
1879                                 struct bss_parameters *params)
1880 {
1881         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1882         enum ieee80211_band band;
1883         u32 changed = 0;
1884
1885         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1886                 return -ENOENT;
1887
1888         band = ieee80211_get_sdata_band(sdata);
1889
1890         if (params->use_cts_prot >= 0) {
1891                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1892                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1893         }
1894         if (params->use_short_preamble >= 0) {
1895                 sdata->vif.bss_conf.use_short_preamble =
1896                         params->use_short_preamble;
1897                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1898         }
1899
1900         if (!sdata->vif.bss_conf.use_short_slot &&
1901             band == IEEE80211_BAND_5GHZ) {
1902                 sdata->vif.bss_conf.use_short_slot = true;
1903                 changed |= BSS_CHANGED_ERP_SLOT;
1904         }
1905
1906         if (params->use_short_slot_time >= 0) {
1907                 sdata->vif.bss_conf.use_short_slot =
1908                         params->use_short_slot_time;
1909                 changed |= BSS_CHANGED_ERP_SLOT;
1910         }
1911
1912         if (params->basic_rates) {
1913                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1914                                          wiphy->bands[band],
1915                                          params->basic_rates,
1916                                          params->basic_rates_len,
1917                                          &sdata->vif.bss_conf.basic_rates);
1918                 changed |= BSS_CHANGED_BASIC_RATES;
1919         }
1920
1921         if (params->ap_isolate >= 0) {
1922                 if (params->ap_isolate)
1923                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1924                 else
1925                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1926         }
1927
1928         if (params->ht_opmode >= 0) {
1929                 sdata->vif.bss_conf.ht_operation_mode =
1930                         (u16) params->ht_opmode;
1931                 changed |= BSS_CHANGED_HT;
1932         }
1933
1934         if (params->p2p_ctwindow >= 0) {
1935                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1936                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1937                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1938                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1939                 changed |= BSS_CHANGED_P2P_PS;
1940         }
1941
1942         if (params->p2p_opp_ps > 0) {
1943                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1944                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1945                 changed |= BSS_CHANGED_P2P_PS;
1946         } else if (params->p2p_opp_ps == 0) {
1947                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1948                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1949                 changed |= BSS_CHANGED_P2P_PS;
1950         }
1951
1952         ieee80211_bss_info_change_notify(sdata, changed);
1953
1954         return 0;
1955 }
1956
1957 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1958                                     struct net_device *dev,
1959                                     struct ieee80211_txq_params *params)
1960 {
1961         struct ieee80211_local *local = wiphy_priv(wiphy);
1962         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1963         struct ieee80211_tx_queue_params p;
1964
1965         if (!local->ops->conf_tx)
1966                 return -EOPNOTSUPP;
1967
1968         if (local->hw.queues < IEEE80211_NUM_ACS)
1969                 return -EOPNOTSUPP;
1970
1971         memset(&p, 0, sizeof(p));
1972         p.aifs = params->aifs;
1973         p.cw_max = params->cwmax;
1974         p.cw_min = params->cwmin;
1975         p.txop = params->txop;
1976
1977         /*
1978          * Setting tx queue params disables u-apsd because it's only
1979          * called in master mode.
1980          */
1981         p.uapsd = false;
1982
1983         sdata->tx_conf[params->ac] = p;
1984         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1985                 wiphy_debug(local->hw.wiphy,
1986                             "failed to set TX queue parameters for AC %d\n",
1987                             params->ac);
1988                 return -EINVAL;
1989         }
1990
1991         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1992
1993         return 0;
1994 }
1995
1996 #ifdef CONFIG_PM
1997 static int ieee80211_suspend(struct wiphy *wiphy,
1998                              struct cfg80211_wowlan *wowlan)
1999 {
2000         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2001 }
2002
2003 static int ieee80211_resume(struct wiphy *wiphy)
2004 {
2005         return __ieee80211_resume(wiphy_priv(wiphy));
2006 }
2007 #else
2008 #define ieee80211_suspend NULL
2009 #define ieee80211_resume NULL
2010 #endif
2011
2012 static int ieee80211_scan(struct wiphy *wiphy,
2013                           struct cfg80211_scan_request *req)
2014 {
2015         struct ieee80211_sub_if_data *sdata;
2016
2017         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2018
2019         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2020         case NL80211_IFTYPE_STATION:
2021         case NL80211_IFTYPE_ADHOC:
2022         case NL80211_IFTYPE_MESH_POINT:
2023         case NL80211_IFTYPE_P2P_CLIENT:
2024         case NL80211_IFTYPE_P2P_DEVICE:
2025                 break;
2026         case NL80211_IFTYPE_P2P_GO:
2027                 if (sdata->local->ops->hw_scan)
2028                         break;
2029                 /*
2030                  * FIXME: implement NoA while scanning in software,
2031                  * for now fall through to allow scanning only when
2032                  * beaconing hasn't been configured yet
2033                  */
2034         case NL80211_IFTYPE_AP:
2035                 /*
2036                  * If the scan has been forced (and the driver supports
2037                  * forcing), don't care about being beaconing already.
2038                  * This will create problems to the attached stations (e.g. all
2039                  * the  frames sent while scanning on other channel will be
2040                  * lost)
2041                  */
2042                 if (sdata->u.ap.beacon &&
2043                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2044                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2045                         return -EOPNOTSUPP;
2046                 break;
2047         default:
2048                 return -EOPNOTSUPP;
2049         }
2050
2051         return ieee80211_request_scan(sdata, req);
2052 }
2053
2054 static int
2055 ieee80211_sched_scan_start(struct wiphy *wiphy,
2056                            struct net_device *dev,
2057                            struct cfg80211_sched_scan_request *req)
2058 {
2059         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2060
2061         if (!sdata->local->ops->sched_scan_start)
2062                 return -EOPNOTSUPP;
2063
2064         return ieee80211_request_sched_scan_start(sdata, req);
2065 }
2066
2067 static int
2068 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2069 {
2070         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2071
2072         if (!sdata->local->ops->sched_scan_stop)
2073                 return -EOPNOTSUPP;
2074
2075         return ieee80211_request_sched_scan_stop(sdata);
2076 }
2077
2078 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2079                           struct cfg80211_auth_request *req)
2080 {
2081         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2082 }
2083
2084 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2085                            struct cfg80211_assoc_request *req)
2086 {
2087         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2088 }
2089
2090 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2091                             struct cfg80211_deauth_request *req)
2092 {
2093         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2094 }
2095
2096 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2097                               struct cfg80211_disassoc_request *req)
2098 {
2099         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2100 }
2101
2102 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2103                                struct cfg80211_ibss_params *params)
2104 {
2105         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2106 }
2107
2108 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2109 {
2110         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2111 }
2112
2113 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2114                               struct ocb_setup *setup)
2115 {
2116         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2117 }
2118
2119 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2120 {
2121         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2122 }
2123
2124 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2125                                     int rate[IEEE80211_NUM_BANDS])
2126 {
2127         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2128
2129         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2130                sizeof(int) * IEEE80211_NUM_BANDS);
2131
2132         return 0;
2133 }
2134
2135 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2136 {
2137         struct ieee80211_local *local = wiphy_priv(wiphy);
2138         int err;
2139
2140         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2141                 ieee80211_check_fast_xmit_all(local);
2142
2143                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2144
2145                 if (err) {
2146                         ieee80211_check_fast_xmit_all(local);
2147                         return err;
2148                 }
2149         }
2150
2151         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2152             (changed & WIPHY_PARAM_DYN_ACK)) {
2153                 s16 coverage_class;
2154
2155                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2156                                         wiphy->coverage_class : -1;
2157                 err = drv_set_coverage_class(local, coverage_class);
2158
2159                 if (err)
2160                         return err;
2161         }
2162
2163         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2164                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2165
2166                 if (err)
2167                         return err;
2168         }
2169
2170         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2171                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2172                         return -EINVAL;
2173                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2174         }
2175         if (changed & WIPHY_PARAM_RETRY_LONG) {
2176                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2177                         return -EINVAL;
2178                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2179         }
2180         if (changed &
2181             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2182                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2183
2184         return 0;
2185 }
2186
2187 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2188                                   struct wireless_dev *wdev,
2189                                   enum nl80211_tx_power_setting type, int mbm)
2190 {
2191         struct ieee80211_local *local = wiphy_priv(wiphy);
2192         struct ieee80211_sub_if_data *sdata;
2193         enum nl80211_tx_power_setting txp_type = type;
2194         bool update_txp_type = false;
2195
2196         if (wdev) {
2197                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2198
2199                 switch (type) {
2200                 case NL80211_TX_POWER_AUTOMATIC:
2201                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2202                         txp_type = NL80211_TX_POWER_LIMITED;
2203                         break;
2204                 case NL80211_TX_POWER_LIMITED:
2205                 case NL80211_TX_POWER_FIXED:
2206                         if (mbm < 0 || (mbm % 100))
2207                                 return -EOPNOTSUPP;
2208                         sdata->user_power_level = MBM_TO_DBM(mbm);
2209                         break;
2210                 }
2211
2212                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2213                         update_txp_type = true;
2214                         sdata->vif.bss_conf.txpower_type = txp_type;
2215                 }
2216
2217                 ieee80211_recalc_txpower(sdata, update_txp_type);
2218
2219                 return 0;
2220         }
2221
2222         switch (type) {
2223         case NL80211_TX_POWER_AUTOMATIC:
2224                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2225                 txp_type = NL80211_TX_POWER_LIMITED;
2226                 break;
2227         case NL80211_TX_POWER_LIMITED:
2228         case NL80211_TX_POWER_FIXED:
2229                 if (mbm < 0 || (mbm % 100))
2230                         return -EOPNOTSUPP;
2231                 local->user_power_level = MBM_TO_DBM(mbm);
2232                 break;
2233         }
2234
2235         mutex_lock(&local->iflist_mtx);
2236         list_for_each_entry(sdata, &local->interfaces, list) {
2237                 sdata->user_power_level = local->user_power_level;
2238                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2239                         update_txp_type = true;
2240                 sdata->vif.bss_conf.txpower_type = txp_type;
2241         }
2242         list_for_each_entry(sdata, &local->interfaces, list)
2243                 ieee80211_recalc_txpower(sdata, update_txp_type);
2244         mutex_unlock(&local->iflist_mtx);
2245
2246         return 0;
2247 }
2248
2249 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2250                                   struct wireless_dev *wdev,
2251                                   int *dbm)
2252 {
2253         struct ieee80211_local *local = wiphy_priv(wiphy);
2254         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2255
2256         if (local->ops->get_txpower)
2257                 return drv_get_txpower(local, sdata, dbm);
2258
2259         if (!local->use_chanctx)
2260                 *dbm = local->hw.conf.power_level;
2261         else
2262                 *dbm = sdata->vif.bss_conf.txpower;
2263
2264         return 0;
2265 }
2266
2267 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2268                                   const u8 *addr)
2269 {
2270         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2271
2272         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2273
2274         return 0;
2275 }
2276
2277 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2278 {
2279         struct ieee80211_local *local = wiphy_priv(wiphy);
2280
2281         drv_rfkill_poll(local);
2282 }
2283
2284 #ifdef CONFIG_NL80211_TESTMODE
2285 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2286                                   struct wireless_dev *wdev,
2287                                   void *data, int len)
2288 {
2289         struct ieee80211_local *local = wiphy_priv(wiphy);
2290         struct ieee80211_vif *vif = NULL;
2291
2292         if (!local->ops->testmode_cmd)
2293                 return -EOPNOTSUPP;
2294
2295         if (wdev) {
2296                 struct ieee80211_sub_if_data *sdata;
2297
2298                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2299                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2300                         vif = &sdata->vif;
2301         }
2302
2303         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2304 }
2305
2306 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2307                                    struct sk_buff *skb,
2308                                    struct netlink_callback *cb,
2309                                    void *data, int len)
2310 {
2311         struct ieee80211_local *local = wiphy_priv(wiphy);
2312
2313         if (!local->ops->testmode_dump)
2314                 return -EOPNOTSUPP;
2315
2316         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2317 }
2318 #endif
2319
2320 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2321                                 enum ieee80211_smps_mode smps_mode)
2322 {
2323         struct sta_info *sta;
2324         enum ieee80211_smps_mode old_req;
2325
2326         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2327                 return -EINVAL;
2328
2329         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2330                 return 0;
2331
2332         old_req = sdata->u.ap.req_smps;
2333         sdata->u.ap.req_smps = smps_mode;
2334
2335         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2336         if (old_req == smps_mode ||
2337             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2338                 return 0;
2339
2340          /* If no associated stations, there's no need to do anything */
2341         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2342                 sdata->smps_mode = smps_mode;
2343                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2344                 return 0;
2345         }
2346
2347         ht_dbg(sdata,
2348                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2349                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2350
2351         mutex_lock(&sdata->local->sta_mtx);
2352         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2353                 /*
2354                  * Only stations associated to our AP and
2355                  * associated VLANs
2356                  */
2357                 if (sta->sdata->bss != &sdata->u.ap)
2358                         continue;
2359
2360                 /* This station doesn't support MIMO - skip it */
2361                 if (sta_info_tx_streams(sta) == 1)
2362                         continue;
2363
2364                 /*
2365                  * Don't wake up a STA just to send the action frame
2366                  * unless we are getting more restrictive.
2367                  */
2368                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2369                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2370                                                    smps_mode)) {
2371                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2372                                sta->sta.addr);
2373                         continue;
2374                 }
2375
2376                 /*
2377                  * If the STA is not authorized, wait until it gets
2378                  * authorized and the action frame will be sent then.
2379                  */
2380                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2381                         continue;
2382
2383                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2384                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2385                                            sdata->vif.bss_conf.bssid);
2386         }
2387         mutex_unlock(&sdata->local->sta_mtx);
2388
2389         sdata->smps_mode = smps_mode;
2390         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2391
2392         return 0;
2393 }
2394
2395 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2396                                  enum ieee80211_smps_mode smps_mode)
2397 {
2398         const u8 *ap;
2399         enum ieee80211_smps_mode old_req;
2400         int err;
2401
2402         lockdep_assert_held(&sdata->wdev.mtx);
2403
2404         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2405                 return -EINVAL;
2406
2407         old_req = sdata->u.mgd.req_smps;
2408         sdata->u.mgd.req_smps = smps_mode;
2409
2410         if (old_req == smps_mode &&
2411             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2412                 return 0;
2413
2414         /*
2415          * If not associated, or current association is not an HT
2416          * association, there's no need to do anything, just store
2417          * the new value until we associate.
2418          */
2419         if (!sdata->u.mgd.associated ||
2420             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2421                 return 0;
2422
2423         ap = sdata->u.mgd.associated->bssid;
2424
2425         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2426                 if (sdata->u.mgd.powersave)
2427                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2428                 else
2429                         smps_mode = IEEE80211_SMPS_OFF;
2430         }
2431
2432         /* send SM PS frame to AP */
2433         err = ieee80211_send_smps_action(sdata, smps_mode,
2434                                          ap, ap);
2435         if (err)
2436                 sdata->u.mgd.req_smps = old_req;
2437
2438         return err;
2439 }
2440
2441 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2442                                     bool enabled, int timeout)
2443 {
2444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2445         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2446
2447         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2448                 return -EOPNOTSUPP;
2449
2450         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2451                 return -EOPNOTSUPP;
2452
2453         if (enabled == sdata->u.mgd.powersave &&
2454             timeout == local->dynamic_ps_forced_timeout)
2455                 return 0;
2456
2457         sdata->u.mgd.powersave = enabled;
2458         local->dynamic_ps_forced_timeout = timeout;
2459
2460         /* no change, but if automatic follow powersave */
2461         sdata_lock(sdata);
2462         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2463         sdata_unlock(sdata);
2464
2465         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2466                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2467
2468         ieee80211_recalc_ps(local, -1);
2469         ieee80211_recalc_ps_vif(sdata);
2470
2471         return 0;
2472 }
2473
2474 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2475                                          struct net_device *dev,
2476                                          s32 rssi_thold, u32 rssi_hyst)
2477 {
2478         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2479         struct ieee80211_vif *vif = &sdata->vif;
2480         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2481
2482         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2483             rssi_hyst == bss_conf->cqm_rssi_hyst)
2484                 return 0;
2485
2486         bss_conf->cqm_rssi_thold = rssi_thold;
2487         bss_conf->cqm_rssi_hyst = rssi_hyst;
2488
2489         /* tell the driver upon association, unless already associated */
2490         if (sdata->u.mgd.associated &&
2491             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2492                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2493
2494         return 0;
2495 }
2496
2497 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2498                                       struct net_device *dev,
2499                                       const u8 *addr,
2500                                       const struct cfg80211_bitrate_mask *mask)
2501 {
2502         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2503         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2504         int i, ret;
2505
2506         if (!ieee80211_sdata_running(sdata))
2507                 return -ENETDOWN;
2508
2509         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2510                 ret = drv_set_bitrate_mask(local, sdata, mask);
2511                 if (ret)
2512                         return ret;
2513         }
2514
2515         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2516                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2517                 int j;
2518
2519                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2520                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2521                        sizeof(mask->control[i].ht_mcs));
2522
2523                 sdata->rc_has_mcs_mask[i] = false;
2524                 if (!sband)
2525                         continue;
2526
2527                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2528                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2529                                 sdata->rc_has_mcs_mask[i] = true;
2530                                 break;
2531                         }
2532         }
2533
2534         return 0;
2535 }
2536
2537 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2538                                            struct ieee80211_roc_work *new_roc,
2539                                            struct ieee80211_roc_work *cur_roc)
2540 {
2541         unsigned long j = jiffies;
2542         unsigned long cur_roc_end = cur_roc->hw_start_time +
2543                                     msecs_to_jiffies(cur_roc->duration);
2544         struct ieee80211_roc_work *next_roc;
2545         int new_dur;
2546
2547         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2548                 return false;
2549
2550         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2551                 return false;
2552
2553         ieee80211_handle_roc_started(new_roc);
2554
2555         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2556
2557         /* cur_roc is long enough - add new_roc to the dependents list. */
2558         if (new_dur <= 0) {
2559                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2560                 return true;
2561         }
2562
2563         new_roc->duration = new_dur;
2564
2565         /*
2566          * if cur_roc was already coalesced before, we might
2567          * want to extend the next roc instead of adding
2568          * a new one.
2569          */
2570         next_roc = list_entry(cur_roc->list.next,
2571                               struct ieee80211_roc_work, list);
2572         if (&next_roc->list != &local->roc_list &&
2573             next_roc->chan == new_roc->chan &&
2574             next_roc->sdata == new_roc->sdata &&
2575             !WARN_ON(next_roc->started)) {
2576                 list_add_tail(&new_roc->list, &next_roc->dependents);
2577                 next_roc->duration = max(next_roc->duration,
2578                                          new_roc->duration);
2579                 next_roc->type = max(next_roc->type, new_roc->type);
2580                 return true;
2581         }
2582
2583         /* add right after cur_roc */
2584         list_add(&new_roc->list, &cur_roc->list);
2585
2586         return true;
2587 }
2588
2589 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2590                                     struct ieee80211_sub_if_data *sdata,
2591                                     struct ieee80211_channel *channel,
2592                                     unsigned int duration, u64 *cookie,
2593                                     struct sk_buff *txskb,
2594                                     enum ieee80211_roc_type type)
2595 {
2596         struct ieee80211_roc_work *roc, *tmp;
2597         bool queued = false;
2598         int ret;
2599
2600         lockdep_assert_held(&local->mtx);
2601
2602         if (local->use_chanctx && !local->ops->remain_on_channel)
2603                 return -EOPNOTSUPP;
2604
2605         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2606         if (!roc)
2607                 return -ENOMEM;
2608
2609         /*
2610          * If the duration is zero, then the driver
2611          * wouldn't actually do anything. Set it to
2612          * 10 for now.
2613          *
2614          * TODO: cancel the off-channel operation
2615          *       when we get the SKB's TX status and
2616          *       the wait time was zero before.
2617          */
2618         if (!duration)
2619                 duration = 10;
2620
2621         roc->chan = channel;
2622         roc->duration = duration;
2623         roc->req_duration = duration;
2624         roc->frame = txskb;
2625         roc->type = type;
2626         roc->mgmt_tx_cookie = (unsigned long)txskb;
2627         roc->sdata = sdata;
2628         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2629         INIT_LIST_HEAD(&roc->dependents);
2630
2631         /*
2632          * cookie is either the roc cookie (for normal roc)
2633          * or the SKB (for mgmt TX)
2634          */
2635         if (!txskb) {
2636                 /* local->mtx protects this */
2637                 local->roc_cookie_counter++;
2638                 roc->cookie = local->roc_cookie_counter;
2639                 /* wow, you wrapped 64 bits ... more likely a bug */
2640                 if (WARN_ON(roc->cookie == 0)) {
2641                         roc->cookie = 1;
2642                         local->roc_cookie_counter++;
2643                 }
2644                 *cookie = roc->cookie;
2645         } else {
2646                 *cookie = (unsigned long)txskb;
2647         }
2648
2649         /* if there's one pending or we're scanning, queue this one */
2650         if (!list_empty(&local->roc_list) ||
2651             local->scanning || ieee80211_is_radar_required(local))
2652                 goto out_check_combine;
2653
2654         /* if not HW assist, just queue & schedule work */
2655         if (!local->ops->remain_on_channel) {
2656                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2657                 goto out_queue;
2658         }
2659
2660         /* otherwise actually kick it off here (for error handling) */
2661
2662         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2663         if (ret) {
2664                 kfree(roc);
2665                 return ret;
2666         }
2667
2668         roc->started = true;
2669         goto out_queue;
2670
2671  out_check_combine:
2672         list_for_each_entry(tmp, &local->roc_list, list) {
2673                 if (tmp->chan != channel || tmp->sdata != sdata)
2674                         continue;
2675
2676                 /*
2677                  * Extend this ROC if possible:
2678                  *
2679                  * If it hasn't started yet, just increase the duration
2680                  * and add the new one to the list of dependents.
2681                  * If the type of the new ROC has higher priority, modify the
2682                  * type of the previous one to match that of the new one.
2683                  */
2684                 if (!tmp->started) {
2685                         list_add_tail(&roc->list, &tmp->dependents);
2686                         tmp->duration = max(tmp->duration, roc->duration);
2687                         tmp->type = max(tmp->type, roc->type);
2688                         queued = true;
2689                         break;
2690                 }
2691
2692                 /* If it has already started, it's more difficult ... */
2693                 if (local->ops->remain_on_channel) {
2694                         /*
2695                          * In the offloaded ROC case, if it hasn't begun, add
2696                          * this new one to the dependent list to be handled
2697                          * when the master one begins. If it has begun,
2698                          * check that there's still a minimum time left and
2699                          * if so, start this one, transmitting the frame, but
2700                          * add it to the list directly after this one with
2701                          * a reduced time so we'll ask the driver to execute
2702                          * it right after finishing the previous one, in the
2703                          * hope that it'll also be executed right afterwards,
2704                          * effectively extending the old one.
2705                          * If there's no minimum time left, just add it to the
2706                          * normal list.
2707                          * TODO: the ROC type is ignored here, assuming that it
2708                          * is better to immediately use the current ROC.
2709                          */
2710                         if (!tmp->hw_begun) {
2711                                 list_add_tail(&roc->list, &tmp->dependents);
2712                                 queued = true;
2713                                 break;
2714                         }
2715
2716                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2717                                 queued = true;
2718                 } else if (del_timer_sync(&tmp->work.timer)) {
2719                         unsigned long new_end;
2720
2721                         /*
2722                          * In the software ROC case, cancel the timer, if
2723                          * that fails then the finish work is already
2724                          * queued/pending and thus we queue the new ROC
2725                          * normally, if that succeeds then we can extend
2726                          * the timer duration and TX the frame (if any.)
2727                          */
2728
2729                         list_add_tail(&roc->list, &tmp->dependents);
2730                         queued = true;
2731
2732                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2733
2734                         /* ok, it was started & we canceled timer */
2735                         if (time_after(new_end, tmp->work.timer.expires))
2736                                 mod_timer(&tmp->work.timer, new_end);
2737                         else
2738                                 add_timer(&tmp->work.timer);
2739
2740                         ieee80211_handle_roc_started(roc);
2741                 }
2742                 break;
2743         }
2744
2745  out_queue:
2746         if (!queued)
2747                 list_add_tail(&roc->list, &local->roc_list);
2748
2749         return 0;
2750 }
2751
2752 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2753                                        struct wireless_dev *wdev,
2754                                        struct ieee80211_channel *chan,
2755                                        unsigned int duration,
2756                                        u64 *cookie)
2757 {
2758         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2759         struct ieee80211_local *local = sdata->local;
2760         int ret;
2761
2762         mutex_lock(&local->mtx);
2763         ret = ieee80211_start_roc_work(local, sdata, chan,
2764                                        duration, cookie, NULL,
2765                                        IEEE80211_ROC_TYPE_NORMAL);
2766         mutex_unlock(&local->mtx);
2767
2768         return ret;
2769 }
2770
2771 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2772                                 u64 cookie, bool mgmt_tx)
2773 {
2774         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2775         int ret;
2776
2777         mutex_lock(&local->mtx);
2778         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2779                 struct ieee80211_roc_work *dep, *tmp2;
2780
2781                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2782                         if (!mgmt_tx && dep->cookie != cookie)
2783                                 continue;
2784                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2785                                 continue;
2786                         /* found dependent item -- just remove it */
2787                         list_del(&dep->list);
2788                         mutex_unlock(&local->mtx);
2789
2790                         ieee80211_roc_notify_destroy(dep, true);
2791                         return 0;
2792                 }
2793
2794                 if (!mgmt_tx && roc->cookie != cookie)
2795                         continue;
2796                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2797                         continue;
2798
2799                 found = roc;
2800                 break;
2801         }
2802
2803         if (!found) {
2804                 mutex_unlock(&local->mtx);
2805                 return -ENOENT;
2806         }
2807
2808         /*
2809          * We found the item to cancel, so do that. Note that it
2810          * may have dependents, which we also cancel (and send
2811          * the expired signal for.) Not doing so would be quite
2812          * tricky here, but we may need to fix it later.
2813          */
2814
2815         if (local->ops->remain_on_channel) {
2816                 if (found->started) {
2817                         ret = drv_cancel_remain_on_channel(local);
2818                         if (WARN_ON_ONCE(ret)) {
2819                                 mutex_unlock(&local->mtx);
2820                                 return ret;
2821                         }
2822                 }
2823
2824                 list_del(&found->list);
2825
2826                 if (found->started)
2827                         ieee80211_start_next_roc(local);
2828                 mutex_unlock(&local->mtx);
2829
2830                 ieee80211_roc_notify_destroy(found, true);
2831         } else {
2832                 /* work may be pending so use it all the time */
2833                 found->abort = true;
2834                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2835
2836                 mutex_unlock(&local->mtx);
2837
2838                 /* work will clean up etc */
2839                 flush_delayed_work(&found->work);
2840                 WARN_ON(!found->to_be_freed);
2841                 kfree(found);
2842         }
2843
2844         return 0;
2845 }
2846
2847 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2848                                               struct wireless_dev *wdev,
2849                                               u64 cookie)
2850 {
2851         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2852         struct ieee80211_local *local = sdata->local;
2853
2854         return ieee80211_cancel_roc(local, cookie, false);
2855 }
2856
2857 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2858                                            struct net_device *dev,
2859                                            struct cfg80211_chan_def *chandef,
2860                                            u32 cac_time_ms)
2861 {
2862         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2863         struct ieee80211_local *local = sdata->local;
2864         int err;
2865
2866         mutex_lock(&local->mtx);
2867         if (!list_empty(&local->roc_list) || local->scanning) {
2868                 err = -EBUSY;
2869                 goto out_unlock;
2870         }
2871
2872         /* whatever, but channel contexts should not complain about that one */
2873         sdata->smps_mode = IEEE80211_SMPS_OFF;
2874         sdata->needed_rx_chains = local->rx_chains;
2875
2876         err = ieee80211_vif_use_channel(sdata, chandef,
2877                                         IEEE80211_CHANCTX_SHARED);
2878         if (err)
2879                 goto out_unlock;
2880
2881         ieee80211_queue_delayed_work(&sdata->local->hw,
2882                                      &sdata->dfs_cac_timer_work,
2883                                      msecs_to_jiffies(cac_time_ms));
2884
2885  out_unlock:
2886         mutex_unlock(&local->mtx);
2887         return err;
2888 }
2889
2890 static struct cfg80211_beacon_data *
2891 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2892 {
2893         struct cfg80211_beacon_data *new_beacon;
2894         u8 *pos;
2895         int len;
2896
2897         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2898               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2899               beacon->probe_resp_len;
2900
2901         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2902         if (!new_beacon)
2903                 return NULL;
2904
2905         pos = (u8 *)(new_beacon + 1);
2906         if (beacon->head_len) {
2907                 new_beacon->head_len = beacon->head_len;
2908                 new_beacon->head = pos;
2909                 memcpy(pos, beacon->head, beacon->head_len);
2910                 pos += beacon->head_len;
2911         }
2912         if (beacon->tail_len) {
2913                 new_beacon->tail_len = beacon->tail_len;
2914                 new_beacon->tail = pos;
2915                 memcpy(pos, beacon->tail, beacon->tail_len);
2916                 pos += beacon->tail_len;
2917         }
2918         if (beacon->beacon_ies_len) {
2919                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2920                 new_beacon->beacon_ies = pos;
2921                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2922                 pos += beacon->beacon_ies_len;
2923         }
2924         if (beacon->proberesp_ies_len) {
2925                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2926                 new_beacon->proberesp_ies = pos;
2927                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2928                 pos += beacon->proberesp_ies_len;
2929         }
2930         if (beacon->assocresp_ies_len) {
2931                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2932                 new_beacon->assocresp_ies = pos;
2933                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2934                 pos += beacon->assocresp_ies_len;
2935         }
2936         if (beacon->probe_resp_len) {
2937                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2938                 beacon->probe_resp = pos;
2939                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2940                 pos += beacon->probe_resp_len;
2941         }
2942
2943         return new_beacon;
2944 }
2945
2946 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2947 {
2948         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2949
2950         ieee80211_queue_work(&sdata->local->hw,
2951                              &sdata->csa_finalize_work);
2952 }
2953 EXPORT_SYMBOL(ieee80211_csa_finish);
2954
2955 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2956                                           u32 *changed)
2957 {
2958         int err;
2959
2960         switch (sdata->vif.type) {
2961         case NL80211_IFTYPE_AP:
2962                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2963                                               NULL);
2964                 kfree(sdata->u.ap.next_beacon);
2965                 sdata->u.ap.next_beacon = NULL;
2966
2967                 if (err < 0)
2968                         return err;
2969                 *changed |= err;
2970                 break;
2971         case NL80211_IFTYPE_ADHOC:
2972                 err = ieee80211_ibss_finish_csa(sdata);
2973                 if (err < 0)
2974                         return err;
2975                 *changed |= err;
2976                 break;
2977 #ifdef CONFIG_MAC80211_MESH
2978         case NL80211_IFTYPE_MESH_POINT:
2979                 err = ieee80211_mesh_finish_csa(sdata);
2980                 if (err < 0)
2981                         return err;
2982                 *changed |= err;
2983                 break;
2984 #endif
2985         default:
2986                 WARN_ON(1);
2987                 return -EINVAL;
2988         }
2989
2990         return 0;
2991 }
2992
2993 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2994 {
2995         struct ieee80211_local *local = sdata->local;
2996         u32 changed = 0;
2997         int err;
2998
2999         sdata_assert_lock(sdata);
3000         lockdep_assert_held(&local->mtx);
3001         lockdep_assert_held(&local->chanctx_mtx);
3002
3003         /*
3004          * using reservation isn't immediate as it may be deferred until later
3005          * with multi-vif. once reservation is complete it will re-schedule the
3006          * work with no reserved_chanctx so verify chandef to check if it
3007          * completed successfully
3008          */
3009
3010         if (sdata->reserved_chanctx) {
3011                 /*
3012                  * with multi-vif csa driver may call ieee80211_csa_finish()
3013                  * many times while waiting for other interfaces to use their
3014                  * reservations
3015                  */
3016                 if (sdata->reserved_ready)
3017                         return 0;
3018
3019                 return ieee80211_vif_use_reserved_context(sdata);
3020         }
3021
3022         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3023                                         &sdata->csa_chandef))
3024                 return -EINVAL;
3025
3026         sdata->vif.csa_active = false;
3027
3028         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3029         if (err)
3030                 return err;
3031
3032         ieee80211_bss_info_change_notify(sdata, changed);
3033
3034         if (sdata->csa_block_tx) {
3035                 ieee80211_wake_vif_queues(local, sdata,
3036                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3037                 sdata->csa_block_tx = false;
3038         }
3039
3040         err = drv_post_channel_switch(sdata);
3041         if (err)
3042                 return err;
3043
3044         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3045
3046         return 0;
3047 }
3048
3049 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3050 {
3051         if (__ieee80211_csa_finalize(sdata)) {
3052                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3053                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3054                                     GFP_KERNEL);
3055         }
3056 }
3057
3058 void ieee80211_csa_finalize_work(struct work_struct *work)
3059 {
3060         struct ieee80211_sub_if_data *sdata =
3061                 container_of(work, struct ieee80211_sub_if_data,
3062                              csa_finalize_work);
3063         struct ieee80211_local *local = sdata->local;
3064
3065         sdata_lock(sdata);
3066         mutex_lock(&local->mtx);
3067         mutex_lock(&local->chanctx_mtx);
3068
3069         /* AP might have been stopped while waiting for the lock. */
3070         if (!sdata->vif.csa_active)
3071                 goto unlock;
3072
3073         if (!ieee80211_sdata_running(sdata))
3074                 goto unlock;
3075
3076         ieee80211_csa_finalize(sdata);
3077
3078 unlock:
3079         mutex_unlock(&local->chanctx_mtx);
3080         mutex_unlock(&local->mtx);
3081         sdata_unlock(sdata);
3082 }
3083
3084 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3085                                     struct cfg80211_csa_settings *params,
3086                                     u32 *changed)
3087 {
3088         struct ieee80211_csa_settings csa = {};
3089         int err;
3090
3091         switch (sdata->vif.type) {
3092         case NL80211_IFTYPE_AP:
3093                 sdata->u.ap.next_beacon =
3094                         cfg80211_beacon_dup(&params->beacon_after);
3095                 if (!sdata->u.ap.next_beacon)
3096                         return -ENOMEM;
3097
3098                 /*
3099                  * With a count of 0, we don't have to wait for any
3100                  * TBTT before switching, so complete the CSA
3101                  * immediately.  In theory, with a count == 1 we
3102                  * should delay the switch until just before the next
3103                  * TBTT, but that would complicate things so we switch
3104                  * immediately too.  If we would delay the switch
3105                  * until the next TBTT, we would have to set the probe
3106                  * response here.
3107                  *
3108                  * TODO: A channel switch with count <= 1 without
3109                  * sending a CSA action frame is kind of useless,
3110                  * because the clients won't know we're changing
3111                  * channels.  The action frame must be implemented
3112                  * either here or in the userspace.
3113                  */
3114                 if (params->count <= 1)
3115                         break;
3116
3117                 if ((params->n_counter_offsets_beacon >
3118                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3119                     (params->n_counter_offsets_presp >
3120                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3121                         return -EINVAL;
3122
3123                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3124                 csa.counter_offsets_presp = params->counter_offsets_presp;
3125                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3126                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3127                 csa.count = params->count;
3128
3129                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3130                 if (err < 0) {
3131                         kfree(sdata->u.ap.next_beacon);
3132                         return err;
3133                 }
3134                 *changed |= err;
3135
3136                 break;
3137         case NL80211_IFTYPE_ADHOC:
3138                 if (!sdata->vif.bss_conf.ibss_joined)
3139                         return -EINVAL;
3140
3141                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3142                         return -EINVAL;
3143
3144                 switch (params->chandef.width) {
3145                 case NL80211_CHAN_WIDTH_40:
3146                         if (cfg80211_get_chandef_type(&params->chandef) !=
3147                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3148                                 return -EINVAL;
3149                 case NL80211_CHAN_WIDTH_5:
3150                 case NL80211_CHAN_WIDTH_10:
3151                 case NL80211_CHAN_WIDTH_20_NOHT:
3152                 case NL80211_CHAN_WIDTH_20:
3153                         break;
3154                 default:
3155                         return -EINVAL;
3156                 }
3157
3158                 /* changes into another band are not supported */
3159                 if (sdata->u.ibss.chandef.chan->band !=
3160                     params->chandef.chan->band)
3161                         return -EINVAL;
3162
3163                 /* see comments in the NL80211_IFTYPE_AP block */
3164                 if (params->count > 1) {
3165                         err = ieee80211_ibss_csa_beacon(sdata, params);
3166                         if (err < 0)
3167                                 return err;
3168                         *changed |= err;
3169                 }
3170
3171                 ieee80211_send_action_csa(sdata, params);
3172
3173                 break;
3174 #ifdef CONFIG_MAC80211_MESH
3175         case NL80211_IFTYPE_MESH_POINT: {
3176                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3177
3178                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3179                         return -EINVAL;
3180
3181                 /* changes into another band are not supported */
3182                 if (sdata->vif.bss_conf.chandef.chan->band !=
3183                     params->chandef.chan->band)
3184                         return -EINVAL;
3185
3186                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3187                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3188                         if (!ifmsh->pre_value)
3189                                 ifmsh->pre_value = 1;
3190                         else
3191                                 ifmsh->pre_value++;
3192                 }
3193
3194                 /* see comments in the NL80211_IFTYPE_AP block */
3195                 if (params->count > 1) {
3196                         err = ieee80211_mesh_csa_beacon(sdata, params);
3197                         if (err < 0) {
3198                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3199                                 return err;
3200                         }
3201                         *changed |= err;
3202                 }
3203
3204                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3205                         ieee80211_send_action_csa(sdata, params);
3206
3207                 break;
3208                 }
3209 #endif
3210         default:
3211                 return -EOPNOTSUPP;
3212         }
3213
3214         return 0;
3215 }
3216
3217 static int
3218 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3219                            struct cfg80211_csa_settings *params)
3220 {
3221         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3222         struct ieee80211_local *local = sdata->local;
3223         struct ieee80211_channel_switch ch_switch;
3224         struct ieee80211_chanctx_conf *conf;
3225         struct ieee80211_chanctx *chanctx;
3226         u32 changed = 0;
3227         int err;
3228
3229         sdata_assert_lock(sdata);
3230         lockdep_assert_held(&local->mtx);
3231
3232         if (!list_empty(&local->roc_list) || local->scanning)
3233                 return -EBUSY;
3234
3235         if (sdata->wdev.cac_started)
3236                 return -EBUSY;
3237
3238         if (cfg80211_chandef_identical(&params->chandef,
3239                                        &sdata->vif.bss_conf.chandef))
3240                 return -EINVAL;
3241
3242         /* don't allow another channel switch if one is already active. */
3243         if (sdata->vif.csa_active)
3244                 return -EBUSY;
3245
3246         mutex_lock(&local->chanctx_mtx);
3247         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3248                                          lockdep_is_held(&local->chanctx_mtx));
3249         if (!conf) {
3250                 err = -EBUSY;
3251                 goto out;
3252         }
3253
3254         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3255         if (!chanctx) {
3256                 err = -EBUSY;
3257                 goto out;
3258         }
3259
3260         ch_switch.timestamp = 0;
3261         ch_switch.device_timestamp = 0;
3262         ch_switch.block_tx = params->block_tx;
3263         ch_switch.chandef = params->chandef;
3264         ch_switch.count = params->count;
3265
3266         err = drv_pre_channel_switch(sdata, &ch_switch);
3267         if (err)
3268                 goto out;
3269
3270         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3271                                             chanctx->mode,
3272                                             params->radar_required);
3273         if (err)
3274                 goto out;
3275
3276         /* if reservation is invalid then this will fail */
3277         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3278         if (err) {
3279                 ieee80211_vif_unreserve_chanctx(sdata);
3280                 goto out;
3281         }
3282
3283         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3284         if (err) {
3285                 ieee80211_vif_unreserve_chanctx(sdata);
3286                 goto out;
3287         }
3288
3289         sdata->csa_chandef = params->chandef;
3290         sdata->csa_block_tx = params->block_tx;
3291         sdata->vif.csa_active = true;
3292
3293         if (sdata->csa_block_tx)
3294                 ieee80211_stop_vif_queues(local, sdata,
3295                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3296
3297         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3298                                           params->count);
3299
3300         if (changed) {
3301                 ieee80211_bss_info_change_notify(sdata, changed);
3302                 drv_channel_switch_beacon(sdata, &params->chandef);
3303         } else {
3304                 /* if the beacon didn't change, we can finalize immediately */
3305                 ieee80211_csa_finalize(sdata);
3306         }
3307
3308 out:
3309         mutex_unlock(&local->chanctx_mtx);
3310         return err;
3311 }
3312
3313 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3314                              struct cfg80211_csa_settings *params)
3315 {
3316         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3317         struct ieee80211_local *local = sdata->local;
3318         int err;
3319
3320         mutex_lock(&local->mtx);
3321         err = __ieee80211_channel_switch(wiphy, dev, params);
3322         mutex_unlock(&local->mtx);
3323
3324         return err;
3325 }
3326
3327 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3328                              struct cfg80211_mgmt_tx_params *params,
3329                              u64 *cookie)
3330 {
3331         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3332         struct ieee80211_local *local = sdata->local;
3333         struct sk_buff *skb;
3334         struct sta_info *sta;
3335         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3336         bool need_offchan = false;
3337         u32 flags;
3338         int ret;
3339         u8 *data;
3340
3341         if (params->dont_wait_for_ack)
3342                 flags = IEEE80211_TX_CTL_NO_ACK;
3343         else
3344                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3345                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3346
3347         if (params->no_cck)
3348                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3349
3350         switch (sdata->vif.type) {
3351         case NL80211_IFTYPE_ADHOC:
3352                 if (!sdata->vif.bss_conf.ibss_joined)
3353                         need_offchan = true;
3354                 /* fall through */
3355 #ifdef CONFIG_MAC80211_MESH
3356         case NL80211_IFTYPE_MESH_POINT:
3357                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3358                     !sdata->u.mesh.mesh_id_len)
3359                         need_offchan = true;
3360                 /* fall through */
3361 #endif
3362         case NL80211_IFTYPE_AP:
3363         case NL80211_IFTYPE_AP_VLAN:
3364         case NL80211_IFTYPE_P2P_GO:
3365                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3366                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3367                     !rcu_access_pointer(sdata->bss->beacon))
3368                         need_offchan = true;
3369                 if (!ieee80211_is_action(mgmt->frame_control) ||
3370                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3371                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3372                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3373                         break;
3374                 rcu_read_lock();
3375                 sta = sta_info_get(sdata, mgmt->da);
3376                 rcu_read_unlock();
3377                 if (!sta)
3378                         return -ENOLINK;
3379                 break;
3380         case NL80211_IFTYPE_STATION:
3381         case NL80211_IFTYPE_P2P_CLIENT:
3382                 sdata_lock(sdata);
3383                 if (!sdata->u.mgd.associated ||
3384                     (params->offchan && params->wait &&
3385                      local->ops->remain_on_channel &&
3386                      memcmp(sdata->u.mgd.associated->bssid,
3387                             mgmt->bssid, ETH_ALEN)))
3388                         need_offchan = true;
3389                 sdata_unlock(sdata);
3390                 break;
3391         case NL80211_IFTYPE_P2P_DEVICE:
3392                 need_offchan = true;
3393                 break;
3394         default:
3395                 return -EOPNOTSUPP;
3396         }
3397
3398         /* configurations requiring offchan cannot work if no channel has been
3399          * specified
3400          */
3401         if (need_offchan && !params->chan)
3402                 return -EINVAL;
3403
3404         mutex_lock(&local->mtx);
3405
3406         /* Check if the operating channel is the requested channel */
3407         if (!need_offchan) {
3408                 struct ieee80211_chanctx_conf *chanctx_conf;
3409
3410                 rcu_read_lock();
3411                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3412
3413                 if (chanctx_conf) {
3414                         need_offchan = params->chan &&
3415                                        (params->chan !=
3416                                         chanctx_conf->def.chan);
3417                 } else if (!params->chan) {
3418                         ret = -EINVAL;
3419                         rcu_read_unlock();
3420                         goto out_unlock;
3421                 } else {
3422                         need_offchan = true;
3423                 }
3424                 rcu_read_unlock();
3425         }
3426
3427         if (need_offchan && !params->offchan) {
3428                 ret = -EBUSY;
3429                 goto out_unlock;
3430         }
3431
3432         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3433         if (!skb) {
3434                 ret = -ENOMEM;
3435                 goto out_unlock;
3436         }
3437         skb_reserve(skb, local->hw.extra_tx_headroom);
3438
3439         data = skb_put(skb, params->len);
3440         memcpy(data, params->buf, params->len);
3441
3442         /* Update CSA counters */
3443         if (sdata->vif.csa_active &&
3444             (sdata->vif.type == NL80211_IFTYPE_AP ||
3445              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3446             params->n_csa_offsets) {
3447                 int i;
3448                 struct beacon_data *beacon = NULL;
3449
3450                 rcu_read_lock();
3451
3452                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3453                         beacon = rcu_dereference(sdata->u.ap.beacon);
3454                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3455                         beacon = rcu_dereference(sdata->u.ibss.presp);
3456                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3457                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3458
3459                 if (beacon)
3460                         for (i = 0; i < params->n_csa_offsets; i++)
3461                                 data[params->csa_offsets[i]] =
3462                                         beacon->csa_current_counter;
3463
3464                 rcu_read_unlock();
3465         }
3466
3467         IEEE80211_SKB_CB(skb)->flags = flags;
3468
3469         skb->dev = sdata->dev;
3470
3471         if (!need_offchan) {
3472                 *cookie = (unsigned long) skb;
3473                 ieee80211_tx_skb(sdata, skb);
3474                 ret = 0;
3475                 goto out_unlock;
3476         }
3477
3478         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3479                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3480         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3481                 IEEE80211_SKB_CB(skb)->hw_queue =
3482                         local->hw.offchannel_tx_hw_queue;
3483
3484         /* This will handle all kinds of coalescing and immediate TX */
3485         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3486                                        params->wait, cookie, skb,
3487                                        IEEE80211_ROC_TYPE_MGMT_TX);
3488         if (ret)
3489                 kfree_skb(skb);
3490  out_unlock:
3491         mutex_unlock(&local->mtx);
3492         return ret;
3493 }
3494
3495 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3496                                          struct wireless_dev *wdev,
3497                                          u64 cookie)
3498 {
3499         struct ieee80211_local *local = wiphy_priv(wiphy);
3500
3501         return ieee80211_cancel_roc(local, cookie, true);
3502 }
3503
3504 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3505                                           struct wireless_dev *wdev,
3506                                           u16 frame_type, bool reg)
3507 {
3508         struct ieee80211_local *local = wiphy_priv(wiphy);
3509
3510         switch (frame_type) {
3511         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3512                 if (reg)
3513                         local->probe_req_reg++;
3514                 else
3515                         local->probe_req_reg--;
3516
3517                 if (!local->open_count)
3518                         break;
3519
3520                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3521                 break;
3522         default:
3523                 break;
3524         }
3525 }
3526
3527 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3528 {
3529         struct ieee80211_local *local = wiphy_priv(wiphy);
3530
3531         if (local->started)
3532                 return -EOPNOTSUPP;
3533
3534         return drv_set_antenna(local, tx_ant, rx_ant);
3535 }
3536
3537 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3538 {
3539         struct ieee80211_local *local = wiphy_priv(wiphy);
3540
3541         return drv_get_antenna(local, tx_ant, rx_ant);
3542 }
3543
3544 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3545                                     struct net_device *dev,
3546                                     struct cfg80211_gtk_rekey_data *data)
3547 {
3548         struct ieee80211_local *local = wiphy_priv(wiphy);
3549         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3550
3551         if (!local->ops->set_rekey_data)
3552                 return -EOPNOTSUPP;
3553
3554         drv_set_rekey_data(local, sdata, data);
3555
3556         return 0;
3557 }
3558
3559 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3560                                   const u8 *peer, u64 *cookie)
3561 {
3562         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3563         struct ieee80211_local *local = sdata->local;
3564         struct ieee80211_qos_hdr *nullfunc;
3565         struct sk_buff *skb;
3566         int size = sizeof(*nullfunc);
3567         __le16 fc;
3568         bool qos;
3569         struct ieee80211_tx_info *info;
3570         struct sta_info *sta;
3571         struct ieee80211_chanctx_conf *chanctx_conf;
3572         enum ieee80211_band band;
3573
3574         rcu_read_lock();
3575         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3576         if (WARN_ON(!chanctx_conf)) {
3577                 rcu_read_unlock();
3578                 return -EINVAL;
3579         }
3580         band = chanctx_conf->def.chan->band;
3581         sta = sta_info_get_bss(sdata, peer);
3582         if (sta) {
3583                 qos = sta->sta.wme;
3584         } else {
3585                 rcu_read_unlock();
3586                 return -ENOLINK;
3587         }
3588
3589         if (qos) {
3590                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3591                                  IEEE80211_STYPE_QOS_NULLFUNC |
3592                                  IEEE80211_FCTL_FROMDS);
3593         } else {
3594                 size -= 2;
3595                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3596                                  IEEE80211_STYPE_NULLFUNC |
3597                                  IEEE80211_FCTL_FROMDS);
3598         }
3599
3600         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3601         if (!skb) {
3602                 rcu_read_unlock();
3603                 return -ENOMEM;
3604         }
3605
3606         skb->dev = dev;
3607
3608         skb_reserve(skb, local->hw.extra_tx_headroom);
3609
3610         nullfunc = (void *) skb_put(skb, size);
3611         nullfunc->frame_control = fc;
3612         nullfunc->duration_id = 0;
3613         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3614         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3615         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3616         nullfunc->seq_ctrl = 0;
3617
3618         info = IEEE80211_SKB_CB(skb);
3619
3620         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3621                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3622         info->band = band;
3623
3624         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3625         skb->priority = 7;
3626         if (qos)
3627                 nullfunc->qos_ctrl = cpu_to_le16(7);
3628
3629         local_bh_disable();
3630         ieee80211_xmit(sdata, sta, skb);
3631         local_bh_enable();
3632         rcu_read_unlock();
3633
3634         *cookie = (unsigned long) skb;
3635         return 0;
3636 }
3637
3638 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3639                                      struct wireless_dev *wdev,
3640                                      struct cfg80211_chan_def *chandef)
3641 {
3642         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3643         struct ieee80211_local *local = wiphy_priv(wiphy);
3644         struct ieee80211_chanctx_conf *chanctx_conf;
3645         int ret = -ENODATA;
3646
3647         rcu_read_lock();
3648         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3649         if (chanctx_conf) {
3650                 *chandef = sdata->vif.bss_conf.chandef;
3651                 ret = 0;
3652         } else if (local->open_count > 0 &&
3653                    local->open_count == local->monitors &&
3654                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3655                 if (local->use_chanctx)
3656                         *chandef = local->monitor_chandef;
3657                 else
3658                         *chandef = local->_oper_chandef;
3659                 ret = 0;
3660         }
3661         rcu_read_unlock();
3662
3663         return ret;
3664 }
3665
3666 #ifdef CONFIG_PM
3667 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3668 {
3669         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3670 }
3671 #endif
3672
3673 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3674                                  struct net_device *dev,
3675                                  struct cfg80211_qos_map *qos_map)
3676 {
3677         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3678         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3679
3680         if (qos_map) {
3681                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3682                 if (!new_qos_map)
3683                         return -ENOMEM;
3684                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3685         } else {
3686                 /* A NULL qos_map was passed to disable QoS mapping */
3687                 new_qos_map = NULL;
3688         }
3689
3690         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3691         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3692         if (old_qos_map)
3693                 kfree_rcu(old_qos_map, rcu_head);
3694
3695         return 0;
3696 }
3697
3698 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3699                                       struct net_device *dev,
3700                                       struct cfg80211_chan_def *chandef)
3701 {
3702         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3703         int ret;
3704         u32 changed = 0;
3705
3706         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3707         if (ret == 0)
3708                 ieee80211_bss_info_change_notify(sdata, changed);
3709
3710         return ret;
3711 }
3712
3713 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3714                                u8 tsid, const u8 *peer, u8 up,
3715                                u16 admitted_time)
3716 {
3717         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3718         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3719         int ac = ieee802_1d_to_ac[up];
3720
3721         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3722                 return -EOPNOTSUPP;
3723
3724         if (!(sdata->wmm_acm & BIT(up)))
3725                 return -EINVAL;
3726
3727         if (ifmgd->tx_tspec[ac].admitted_time)
3728                 return -EBUSY;
3729
3730         if (admitted_time) {
3731                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3732                 ifmgd->tx_tspec[ac].tsid = tsid;
3733                 ifmgd->tx_tspec[ac].up = up;
3734         }
3735
3736         return 0;
3737 }
3738
3739 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3740                                u8 tsid, const u8 *peer)
3741 {
3742         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3743         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3744         struct ieee80211_local *local = wiphy_priv(wiphy);
3745         int ac;
3746
3747         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3748                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3749
3750                 /* skip unused entries */
3751                 if (!tx_tspec->admitted_time)
3752                         continue;
3753
3754                 if (tx_tspec->tsid != tsid)
3755                         continue;
3756
3757                 /* due to this new packets will be reassigned to non-ACM ACs */
3758                 tx_tspec->up = -1;
3759
3760                 /* Make sure that all packets have been sent to avoid to
3761                  * restore the QoS params on packets that are still on the
3762                  * queues.
3763                  */
3764                 synchronize_net();
3765                 ieee80211_flush_queues(local, sdata, false);
3766
3767                 /* restore the normal QoS parameters
3768                  * (unconditionally to avoid races)
3769                  */
3770                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3771                 tx_tspec->downgraded = false;
3772                 ieee80211_sta_handle_tspec_ac_params(sdata);
3773
3774                 /* finally clear all the data */
3775                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3776
3777                 return 0;
3778         }
3779
3780         return -ENOENT;
3781 }
3782
3783 const struct cfg80211_ops mac80211_config_ops = {
3784         .add_virtual_intf = ieee80211_add_iface,
3785         .del_virtual_intf = ieee80211_del_iface,
3786         .change_virtual_intf = ieee80211_change_iface,
3787         .start_p2p_device = ieee80211_start_p2p_device,
3788         .stop_p2p_device = ieee80211_stop_p2p_device,
3789         .add_key = ieee80211_add_key,
3790         .del_key = ieee80211_del_key,
3791         .get_key = ieee80211_get_key,
3792         .set_default_key = ieee80211_config_default_key,
3793         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3794         .start_ap = ieee80211_start_ap,
3795         .change_beacon = ieee80211_change_beacon,
3796         .stop_ap = ieee80211_stop_ap,
3797         .add_station = ieee80211_add_station,
3798         .del_station = ieee80211_del_station,
3799         .change_station = ieee80211_change_station,
3800         .get_station = ieee80211_get_station,
3801         .dump_station = ieee80211_dump_station,
3802         .dump_survey = ieee80211_dump_survey,
3803 #ifdef CONFIG_MAC80211_MESH
3804         .add_mpath = ieee80211_add_mpath,
3805         .del_mpath = ieee80211_del_mpath,
3806         .change_mpath = ieee80211_change_mpath,
3807         .get_mpath = ieee80211_get_mpath,
3808         .dump_mpath = ieee80211_dump_mpath,
3809         .get_mpp = ieee80211_get_mpp,
3810         .dump_mpp = ieee80211_dump_mpp,
3811         .update_mesh_config = ieee80211_update_mesh_config,
3812         .get_mesh_config = ieee80211_get_mesh_config,
3813         .join_mesh = ieee80211_join_mesh,
3814         .leave_mesh = ieee80211_leave_mesh,
3815 #endif
3816         .join_ocb = ieee80211_join_ocb,
3817         .leave_ocb = ieee80211_leave_ocb,
3818         .change_bss = ieee80211_change_bss,
3819         .set_txq_params = ieee80211_set_txq_params,
3820         .set_monitor_channel = ieee80211_set_monitor_channel,
3821         .suspend = ieee80211_suspend,
3822         .resume = ieee80211_resume,
3823         .scan = ieee80211_scan,
3824         .sched_scan_start = ieee80211_sched_scan_start,
3825         .sched_scan_stop = ieee80211_sched_scan_stop,
3826         .auth = ieee80211_auth,
3827         .assoc = ieee80211_assoc,
3828         .deauth = ieee80211_deauth,
3829         .disassoc = ieee80211_disassoc,
3830         .join_ibss = ieee80211_join_ibss,
3831         .leave_ibss = ieee80211_leave_ibss,
3832         .set_mcast_rate = ieee80211_set_mcast_rate,
3833         .set_wiphy_params = ieee80211_set_wiphy_params,
3834         .set_tx_power = ieee80211_set_tx_power,
3835         .get_tx_power = ieee80211_get_tx_power,
3836         .set_wds_peer = ieee80211_set_wds_peer,
3837         .rfkill_poll = ieee80211_rfkill_poll,
3838         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3839         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3840         .set_power_mgmt = ieee80211_set_power_mgmt,
3841         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3842         .remain_on_channel = ieee80211_remain_on_channel,
3843         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3844         .mgmt_tx = ieee80211_mgmt_tx,
3845         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3846         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3847         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3848         .set_antenna = ieee80211_set_antenna,
3849         .get_antenna = ieee80211_get_antenna,
3850         .set_rekey_data = ieee80211_set_rekey_data,
3851         .tdls_oper = ieee80211_tdls_oper,
3852         .tdls_mgmt = ieee80211_tdls_mgmt,
3853         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3854         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3855         .probe_client = ieee80211_probe_client,
3856         .set_noack_map = ieee80211_set_noack_map,
3857 #ifdef CONFIG_PM
3858         .set_wakeup = ieee80211_set_wakeup,
3859 #endif
3860         .get_channel = ieee80211_cfg_get_channel,
3861         .start_radar_detection = ieee80211_start_radar_detection,
3862         .channel_switch = ieee80211_channel_switch,
3863         .set_qos_map = ieee80211_set_qos_map,
3864         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3865         .add_tx_ts = ieee80211_add_tx_ts,
3866         .del_tx_ts = ieee80211_del_tx_ts,
3867 };