net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 sta = sta_info_get_bss(sdata, mac_addr);
 140                 if (!sta) {
 141                         ieee80211_key_free(sdata->local, key);
 142                         err = -ENOENT;
 143                         goto out_unlock;
 144                 }
 145         }
 146
 147         err = ieee80211_key_link(key, sdata, sta);
 148         if (err)
 149                 ieee80211_key_free(sdata->local, key);
 150
 151  out_unlock:
 152         mutex_unlock(&sdata->local->sta_mtx);
 153
 154         return err;
 155 }
 156
 157 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 158                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 159 {
 160         struct ieee80211_sub_if_data *sdata;
 161         struct sta_info *sta;
 162         int ret;
 163
 164         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 165
 166         mutex_lock(&sdata->local->sta_mtx);
 167
 168         if (mac_addr) {
 169                 ret = -ENOENT;
 170
 171                 sta = sta_info_get_bss(sdata, mac_addr);
 172                 if (!sta)
 173                         goto out_unlock;
 174
 175                 if (pairwise) {
 176                         if (sta->ptk) {
 177                                 ieee80211_key_free(sdata->local, sta->ptk);
 178                                 ret = 0;
 179                         }
 180                 } else {
 181                         if (sta->gtk[key_idx]) {
 182                                 ieee80211_key_free(sdata->local,
 183                                                    sta->gtk[key_idx]);
 184                                 ret = 0;
 185                         }
 186                 }
 187
 188                 goto out_unlock;
 189         }
 190
 191         if (!sdata->keys[key_idx]) {
 192                 ret = -ENOENT;
 193                 goto out_unlock;
 194         }
 195
 196         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 197         WARN_ON(sdata->keys[key_idx]);
 198
 199         ret = 0;
 200  out_unlock:
 201         mutex_unlock(&sdata->local->sta_mtx);
 202
 203         return ret;
 204 }
 205
 206 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 207                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 208                              void *cookie,
 209                              void (*callback)(void *cookie,
 210                                               struct key_params *params))
 211 {
 212         struct ieee80211_sub_if_data *sdata;
 213         struct sta_info *sta = NULL;
 214         u8 seq[6] = {0};
 215         struct key_params params;
 216         struct ieee80211_key *key = NULL;
 217         u32 iv32;
 218         u16 iv16;
 219         int err = -ENOENT;
 220
 221         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 222
 223         rcu_read_lock();
 224
 225         if (mac_addr) {
 226                 sta = sta_info_get_bss(sdata, mac_addr);
 227                 if (!sta)
 228                         goto out;
 229
 230                 if (pairwise)
 231                         key = sta->ptk;
 232                 else if (key_idx < NUM_DEFAULT_KEYS)
 233                         key = sta->gtk[key_idx];
 234         } else
 235                 key = sdata->keys[key_idx];
 236
 237         if (!key)
 238                 goto out;
 239
 240         memset(&params, 0, sizeof(params));
 241
 242         params.cipher = key->conf.cipher;
 243
 244         switch (key->conf.cipher) {
 245         case WLAN_CIPHER_SUITE_TKIP:
 246                 iv32 = key->u.tkip.tx.iv32;
 247                 iv16 = key->u.tkip.tx.iv16;
 248
 249                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 250                         drv_get_tkip_seq(sdata->local,
 251                                          key->conf.hw_key_idx,
 252                                          &iv32, &iv16);
 253
 254                 seq[0] = iv16 & 0xff;
 255                 seq[1] = (iv16 >> 8) & 0xff;
 256                 seq[2] = iv32 & 0xff;
 257                 seq[3] = (iv32 >> 8) & 0xff;
 258                 seq[4] = (iv32 >> 16) & 0xff;
 259                 seq[5] = (iv32 >> 24) & 0xff;
 260                 params.seq = seq;
 261                 params.seq_len = 6;
 262                 break;
 263         case WLAN_CIPHER_SUITE_CCMP:
 264                 seq[0] = key->u.ccmp.tx_pn[5];
 265                 seq[1] = key->u.ccmp.tx_pn[4];
 266                 seq[2] = key->u.ccmp.tx_pn[3];
 267                 seq[3] = key->u.ccmp.tx_pn[2];
 268                 seq[4] = key->u.ccmp.tx_pn[1];
 269                 seq[5] = key->u.ccmp.tx_pn[0];
 270                 params.seq = seq;
 271                 params.seq_len = 6;
 272                 break;
 273         case WLAN_CIPHER_SUITE_AES_CMAC:
 274                 seq[0] = key->u.aes_cmac.tx_pn[5];
 275                 seq[1] = key->u.aes_cmac.tx_pn[4];
 276                 seq[2] = key->u.aes_cmac.tx_pn[3];
 277                 seq[3] = key->u.aes_cmac.tx_pn[2];
 278                 seq[4] = key->u.aes_cmac.tx_pn[1];
 279                 seq[5] = key->u.aes_cmac.tx_pn[0];
 280                 params.seq = seq;
 281                 params.seq_len = 6;
 282                 break;
 283         }
 284
 285         params.key = key->conf.key;
 286         params.key_len = key->conf.keylen;
 287
 288         callback(cookie, &params);
 289         err = 0;
 290
 291  out:
 292         rcu_read_unlock();
 293         return err;
 294 }
 295
 296 static int ieee80211_config_default_key(struct wiphy *wiphy,
 297                                         struct net_device *dev,
 298                                         u8 key_idx, bool uni,
 299                                         bool multi)
 300 {
 301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 302
 303         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 304
 305         return 0;
 306 }
 307
 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 309                                              struct net_device *dev,
 310                                              u8 key_idx)
 311 {
 312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         ieee80211_set_default_mgmt_key(sdata, key_idx);
 315
 316         return 0;
 317 }
 318
 319 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 320 {
 321         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 322                 struct ieee80211_supported_band *sband;
 323                 sband = sta->local->hw.wiphy->bands[
 324                                 sta->local->hw.conf.channel->band];
 325                 rate->legacy = sband->bitrates[idx].bitrate;
 326         } else
 327                 rate->mcs = idx;
 328 }
 329
 330 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 331 {
 332         struct ieee80211_sub_if_data *sdata = sta->sdata;
 333         struct timespec uptime;
 334
 335         sinfo->generation = sdata->local->sta_generation;
 336
 337         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 338                         STATION_INFO_RX_BYTES |
 339                         STATION_INFO_TX_BYTES |
 340                         STATION_INFO_RX_PACKETS |
 341                         STATION_INFO_TX_PACKETS |
 342                         STATION_INFO_TX_RETRIES |
 343                         STATION_INFO_TX_FAILED |
 344                         STATION_INFO_TX_BITRATE |
 345                         STATION_INFO_RX_BITRATE |
 346                         STATION_INFO_RX_DROP_MISC |
 347                         STATION_INFO_BSS_PARAM |
 348                         STATION_INFO_CONNECTED_TIME;
 349
 350         do_posix_clock_monotonic_gettime(&uptime);
 351         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 352
 353         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 354         sinfo->rx_bytes = sta->rx_bytes;
 355         sinfo->tx_bytes = sta->tx_bytes;
 356         sinfo->rx_packets = sta->rx_packets;
 357         sinfo->tx_packets = sta->tx_packets;
 358         sinfo->tx_retries = sta->tx_retry_count;
 359         sinfo->tx_failed = sta->tx_retry_failed;
 360         sinfo->rx_dropped_misc = sta->rx_dropped;
 361
 362         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 363             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 364                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 365                 sinfo->signal = (s8)sta->last_signal;
 366                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 367         }
 368
 369         sinfo->txrate.flags = 0;
 370         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 371                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 372         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 373                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 374         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 375                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 376         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 377
 378         sinfo->rxrate.flags = 0;
 379         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 380                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 381         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 382                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 383         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 384                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 385         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 386
 387         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 388 #ifdef CONFIG_MAC80211_MESH
 389                 sinfo->filled |= STATION_INFO_LLID |
 390                                  STATION_INFO_PLID |
 391                                  STATION_INFO_PLINK_STATE;
 392
 393                 sinfo->llid = le16_to_cpu(sta->llid);
 394                 sinfo->plid = le16_to_cpu(sta->plid);
 395                 sinfo->plink_state = sta->plink_state;
 396 #endif
 397         }
 398
 399         sinfo->bss_param.flags = 0;
 400         if (sdata->vif.bss_conf.use_cts_prot)
 401                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 402         if (sdata->vif.bss_conf.use_short_preamble)
 403                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 404         if (sdata->vif.bss_conf.use_short_slot)
 405                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 406         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 407         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 408 }
 409
 410
 411 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 412                                  int idx, u8 *mac, struct station_info *sinfo)
 413 {
 414         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 415         struct sta_info *sta;
 416         int ret = -ENOENT;
 417
 418         rcu_read_lock();
 419
 420         sta = sta_info_get_by_idx(sdata, idx);
 421         if (sta) {
 422                 ret = 0;
 423                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 424                 sta_set_sinfo(sta, sinfo);
 425         }
 426
 427         rcu_read_unlock();
 428
 429         return ret;
 430 }
 431
 432 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 433                                  int idx, struct survey_info *survey)
 434 {
 435         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 436
 437         return drv_get_survey(local, idx, survey);
 438 }
 439
 440 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 441                                  u8 *mac, struct station_info *sinfo)
 442 {
 443         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 444         struct sta_info *sta;
 445         int ret = -ENOENT;
 446
 447         rcu_read_lock();
 448
 449         sta = sta_info_get_bss(sdata, mac);
 450         if (sta) {
 451                 ret = 0;
 452                 sta_set_sinfo(sta, sinfo);
 453         }
 454
 455         rcu_read_unlock();
 456
 457         return ret;
 458 }
 459
 460 /*
 461  * This handles both adding a beacon and setting new beacon info
 462  */
 463 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 464                                    struct beacon_parameters *params)
 465 {
 466         struct beacon_data *new, *old;
 467         int new_head_len, new_tail_len;
 468         int size;
 469         int err = -EINVAL;
 470
 471         old = sdata->u.ap.beacon;
 472
 473         /* head must not be zero-length */
 474         if (params->head && !params->head_len)
 475                 return -EINVAL;
 476
 477         /*
 478          * This is a kludge. beacon interval should really be part
 479          * of the beacon information.
 480          */
 481         if (params->interval &&
 482             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 483                 sdata->vif.bss_conf.beacon_int = params->interval;
 484                 ieee80211_bss_info_change_notify(sdata,
 485                                                  BSS_CHANGED_BEACON_INT);
 486         }
 487
 488         /* Need to have a beacon head if we don't have one yet */
 489         if (!params->head && !old)
 490                 return err;
 491
 492         /* sorry, no way to start beaconing without dtim period */
 493         if (!params->dtim_period && !old)
 494                 return err;
 495
 496         /* new or old head? */
 497         if (params->head)
 498                 new_head_len = params->head_len;
 499         else
 500                 new_head_len = old->head_len;
 501
 502         /* new or old tail? */
 503         if (params->tail || !old)
 504                 /* params->tail_len will be zero for !params->tail */
 505                 new_tail_len = params->tail_len;
 506         else
 507                 new_tail_len = old->tail_len;
 508
 509         size = sizeof(*new) + new_head_len + new_tail_len;
 510
 511         new = kzalloc(size, GFP_KERNEL);
 512         if (!new)
 513                 return -ENOMEM;
 514
 515         /* start filling the new info now */
 516
 517         /* new or old dtim period? */
 518         if (params->dtim_period)
 519                 new->dtim_period = params->dtim_period;
 520         else
 521                 new->dtim_period = old->dtim_period;
 522
 523         /*
 524          * pointers go into the block we allocated,
 525          * memory is | beacon_data | head | tail |
 526          */
 527         new->head = ((u8 *) new) + sizeof(*new);
 528         new->tail = new->head + new_head_len;
 529         new->head_len = new_head_len;
 530         new->tail_len = new_tail_len;
 531
 532         /* copy in head */
 533         if (params->head)
 534                 memcpy(new->head, params->head, new_head_len);
 535         else
 536                 memcpy(new->head, old->head, new_head_len);
 537
 538         /* copy in optional tail */
 539         if (params->tail)
 540                 memcpy(new->tail, params->tail, new_tail_len);
 541         else
 542                 if (old)
 543                         memcpy(new->tail, old->tail, new_tail_len);
 544
 545         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 546
 547         rcu_assign_pointer(sdata->u.ap.beacon, new);
 548
 549         synchronize_rcu();
 550
 551         kfree(old);
 552
 553         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 554                                                 BSS_CHANGED_BEACON);
 555         return 0;
 556 }
 557
 558 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 559                                 struct beacon_parameters *params)
 560 {
 561         struct ieee80211_sub_if_data *sdata;
 562         struct beacon_data *old;
 563
 564         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 565
 566         old = sdata->u.ap.beacon;
 567
 568         if (old)
 569                 return -EALREADY;
 570
 571         return ieee80211_config_beacon(sdata, params);
 572 }
 573
 574 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 575                                 struct beacon_parameters *params)
 576 {
 577         struct ieee80211_sub_if_data *sdata;
 578         struct beacon_data *old;
 579
 580         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 581
 582         old = sdata->u.ap.beacon;
 583
 584         if (!old)
 585                 return -ENOENT;
 586
 587         return ieee80211_config_beacon(sdata, params);
 588 }
 589
 590 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 591 {
 592         struct ieee80211_sub_if_data *sdata;
 593         struct beacon_data *old;
 594
 595         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 596
 597         old = sdata->u.ap.beacon;
 598
 599         if (!old)
 600                 return -ENOENT;
 601
 602         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 603         synchronize_rcu();
 604         kfree(old);
 605
 606         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 607         return 0;
 608 }
 609
 610 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 611 struct iapp_layer2_update {
 612         u8 da[ETH_ALEN];        /* broadcast */
 613         u8 sa[ETH_ALEN];        /* STA addr */
 614         __be16 len;             /* 6 */
 615         u8 dsap;                /* 0 */
 616         u8 ssap;                /* 0 */
 617         u8 control;
 618         u8 xid_info[3];
 619 } __packed;
 620
 621 static void ieee80211_send_layer2_update(struct sta_info *sta)
 622 {
 623         struct iapp_layer2_update *msg;
 624         struct sk_buff *skb;
 625
 626         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 627          * bridge devices */
 628
 629         skb = dev_alloc_skb(sizeof(*msg));
 630         if (!skb)
 631                 return;
 632         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 633
 634         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 635          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 636
 637         memset(msg->da, 0xff, ETH_ALEN);
 638         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 639         msg->len = htons(6);
 640         msg->dsap = 0;
 641         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 642         msg->control = 0xaf;    /* XID response lsb.1111F101.
 643                                  * F=0 (no poll command; unsolicited frame) */
 644         msg->xid_info[0] = 0x81;        /* XID format identifier */
 645         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 646         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 647
 648         skb->dev = sta->sdata->dev;
 649         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 650         memset(skb->cb, 0, sizeof(skb->cb));
 651         netif_rx_ni(skb);
 652 }
 653
 654 static void sta_apply_parameters(struct ieee80211_local *local,
 655                                  struct sta_info *sta,
 656                                  struct station_parameters *params)
 657 {
 658         unsigned long flags;
 659         u32 rates;
 660         int i, j;
 661         struct ieee80211_supported_band *sband;
 662         struct ieee80211_sub_if_data *sdata = sta->sdata;
 663         u32 mask, set;
 664
 665         sband = local->hw.wiphy->bands[local->oper_channel->band];
 666
 667         spin_lock_irqsave(&sta->flaglock, flags);
 668         mask = params->sta_flags_mask;
 669         set = params->sta_flags_set;
 670
 671         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 672                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 673                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 674                         sta->flags |= WLAN_STA_AUTHORIZED;
 675         }
 676
 677         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 678                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 679                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 680                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 681         }
 682
 683         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 684                 sta->flags &= ~WLAN_STA_WME;
 685                 if (set & BIT(NL80211_STA_FLAG_WME))
 686                         sta->flags |= WLAN_STA_WME;
 687         }
 688
 689         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 690                 sta->flags &= ~WLAN_STA_MFP;
 691                 if (set & BIT(NL80211_STA_FLAG_MFP))
 692                         sta->flags |= WLAN_STA_MFP;
 693         }
 694
 695         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 696                 sta->flags &= ~WLAN_STA_AUTH;
 697                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 698                         sta->flags |= WLAN_STA_AUTH;
 699         }
 700         spin_unlock_irqrestore(&sta->flaglock, flags);
 701
 702         /*
 703          * cfg80211 validates this (1-2007) and allows setting the AID
 704          * only when creating a new station entry
 705          */
 706         if (params->aid)
 707                 sta->sta.aid = params->aid;
 708
 709         /*
 710          * FIXME: updating the following information is racy when this
 711          *        function is called from ieee80211_change_station().
 712          *        However, all this information should be static so
 713          *        maybe we should just reject attemps to change it.
 714          */
 715
 716         if (params->listen_interval >= 0)
 717                 sta->listen_interval = params->listen_interval;
 718
 719         if (params->supported_rates) {
 720                 rates = 0;
 721
 722                 for (i = 0; i < params->supported_rates_len; i++) {
 723                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 724                         for (j = 0; j < sband->n_bitrates; j++) {
 725                                 if (sband->bitrates[j].bitrate == rate)
 726                                         rates |= BIT(j);
 727                         }
 728                 }
 729                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 730         }
 731
 732         if (params->ht_capa)
 733                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 734                                                   params->ht_capa,
 735                                                   &sta->sta.ht_cap);
 736
 737         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 738                 switch (params->plink_action) {
 739                 case PLINK_ACTION_OPEN:
 740                         mesh_plink_open(sta);
 741                         break;
 742                 case PLINK_ACTION_BLOCK:
 743                         mesh_plink_block(sta);
 744                         break;
 745                 }
 746         }
 747 }
 748
 749 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 750                                  u8 *mac, struct station_parameters *params)
 751 {
 752         struct ieee80211_local *local = wiphy_priv(wiphy);
 753         struct sta_info *sta;
 754         struct ieee80211_sub_if_data *sdata;
 755         int err;
 756         int layer2_update;
 757
 758         if (params->vlan) {
 759                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 760
 761                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 762                     sdata->vif.type != NL80211_IFTYPE_AP)
 763                         return -EINVAL;
 764         } else
 765                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 766
 767         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 768                 return -EINVAL;
 769
 770         if (is_multicast_ether_addr(mac))
 771                 return -EINVAL;
 772
 773         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 774         if (!sta)
 775                 return -ENOMEM;
 776
 777         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 778
 779         sta_apply_parameters(local, sta, params);
 780
 781         rate_control_rate_init(sta);
 782
 783         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 784                 sdata->vif.type == NL80211_IFTYPE_AP;
 785
 786         err = sta_info_insert_rcu(sta);
 787         if (err) {
 788                 rcu_read_unlock();
 789                 return err;
 790         }
 791
 792         if (layer2_update)
 793                 ieee80211_send_layer2_update(sta);
 794
 795         rcu_read_unlock();
 796
 797         return 0;
 798 }
 799
 800 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 801                                  u8 *mac)
 802 {
 803         struct ieee80211_local *local = wiphy_priv(wiphy);
 804         struct ieee80211_sub_if_data *sdata;
 805
 806         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 807
 808         if (mac)
 809                 return sta_info_destroy_addr_bss(sdata, mac);
 810
 811         sta_info_flush(local, sdata);
 812         return 0;
 813 }
 814
 815 static int ieee80211_change_station(struct wiphy *wiphy,
 816                                     struct net_device *dev,
 817                                     u8 *mac,
 818                                     struct station_parameters *params)
 819 {
 820         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 821         struct ieee80211_local *local = wiphy_priv(wiphy);
 822         struct sta_info *sta;
 823         struct ieee80211_sub_if_data *vlansdata;
 824
 825         rcu_read_lock();
 826
 827         sta = sta_info_get_bss(sdata, mac);
 828         if (!sta) {
 829                 rcu_read_unlock();
 830                 return -ENOENT;
 831         }
 832
 833         if (params->vlan && params->vlan != sta->sdata->dev) {
 834                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 835
 836                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 837                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 838                         rcu_read_unlock();
 839                         return -EINVAL;
 840                 }
 841
 842                 if (params->vlan->ieee80211_ptr->use_4addr) {
 843                         if (vlansdata->u.vlan.sta) {
 844                                 rcu_read_unlock();
 845                                 return -EBUSY;
 846                         }
 847
 848                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 849                 }
 850
 851                 sta->sdata = vlansdata;
 852                 ieee80211_send_layer2_update(sta);
 853         }
 854
 855         sta_apply_parameters(local, sta, params);
 856
 857         rcu_read_unlock();
 858
 859         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 860             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 861                 ieee80211_recalc_ps(local, -1);
 862
 863         return 0;
 864 }
 865
 866 #ifdef CONFIG_MAC80211_MESH
 867 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 868                                  u8 *dst, u8 *next_hop)
 869 {
 870         struct ieee80211_sub_if_data *sdata;
 871         struct mesh_path *mpath;
 872         struct sta_info *sta;
 873         int err;
 874
 875         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 876
 877         rcu_read_lock();
 878         sta = sta_info_get(sdata, next_hop);
 879         if (!sta) {
 880                 rcu_read_unlock();
 881                 return -ENOENT;
 882         }
 883
 884         err = mesh_path_add(dst, sdata);
 885         if (err) {
 886                 rcu_read_unlock();
 887                 return err;
 888         }
 889
 890         mpath = mesh_path_lookup(dst, sdata);
 891         if (!mpath) {
 892                 rcu_read_unlock();
 893                 return -ENXIO;
 894         }
 895         mesh_path_fix_nexthop(mpath, sta);
 896
 897         rcu_read_unlock();
 898         return 0;
 899 }
 900
 901 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 902                                  u8 *dst)
 903 {
 904         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 905
 906         if (dst)
 907                 return mesh_path_del(dst, sdata);
 908
 909         mesh_path_flush(sdata);
 910         return 0;
 911 }
 912
 913 static int ieee80211_change_mpath(struct wiphy *wiphy,
 914                                     struct net_device *dev,
 915                                     u8 *dst, u8 *next_hop)
 916 {
 917         struct ieee80211_sub_if_data *sdata;
 918         struct mesh_path *mpath;
 919         struct sta_info *sta;
 920
 921         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 922
 923         rcu_read_lock();
 924
 925         sta = sta_info_get(sdata, next_hop);
 926         if (!sta) {
 927                 rcu_read_unlock();
 928                 return -ENOENT;
 929         }
 930
 931         mpath = mesh_path_lookup(dst, sdata);
 932         if (!mpath) {
 933                 rcu_read_unlock();
 934                 return -ENOENT;
 935         }
 936
 937         mesh_path_fix_nexthop(mpath, sta);
 938
 939         rcu_read_unlock();
 940         return 0;
 941 }
 942
 943 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 944                             struct mpath_info *pinfo)
 945 {
 946         if (mpath->next_hop)
 947                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 948         else
 949                 memset(next_hop, 0, ETH_ALEN);
 950
 951         pinfo->generation = mesh_paths_generation;
 952
 953         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 954                         MPATH_INFO_SN |
 955                         MPATH_INFO_METRIC |
 956                         MPATH_INFO_EXPTIME |
 957                         MPATH_INFO_DISCOVERY_TIMEOUT |
 958                         MPATH_INFO_DISCOVERY_RETRIES |
 959                         MPATH_INFO_FLAGS;
 960
 961         pinfo->frame_qlen = mpath->frame_queue.qlen;
 962         pinfo->sn = mpath->sn;
 963         pinfo->metric = mpath->metric;
 964         if (time_before(jiffies, mpath->exp_time))
 965                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 966         pinfo->discovery_timeout =
 967                         jiffies_to_msecs(mpath->discovery_timeout);
 968         pinfo->discovery_retries = mpath->discovery_retries;
 969         pinfo->flags = 0;
 970         if (mpath->flags & MESH_PATH_ACTIVE)
 971                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 972         if (mpath->flags & MESH_PATH_RESOLVING)
 973                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 974         if (mpath->flags & MESH_PATH_SN_VALID)
 975                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 976         if (mpath->flags & MESH_PATH_FIXED)
 977                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 978         if (mpath->flags & MESH_PATH_RESOLVING)
 979                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 980
 981         pinfo->flags = mpath->flags;
 982 }
 983
 984 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 985                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 986
 987 {
 988         struct ieee80211_sub_if_data *sdata;
 989         struct mesh_path *mpath;
 990
 991         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 992
 993         rcu_read_lock();
 994         mpath = mesh_path_lookup(dst, sdata);
 995         if (!mpath) {
 996                 rcu_read_unlock();
 997                 return -ENOENT;
 998         }
 999         memcpy(dst, mpath->dst, ETH_ALEN);
1000         mpath_set_pinfo(mpath, next_hop, pinfo);
1001         rcu_read_unlock();
1002         return 0;
1003 }
1004
1005 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1006                                  int idx, u8 *dst, u8 *next_hop,
1007                                  struct mpath_info *pinfo)
1008 {
1009         struct ieee80211_sub_if_data *sdata;
1010         struct mesh_path *mpath;
1011
1012         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1013
1014         rcu_read_lock();
1015         mpath = mesh_path_lookup_by_idx(idx, sdata);
1016         if (!mpath) {
1017                 rcu_read_unlock();
1018                 return -ENOENT;
1019         }
1020         memcpy(dst, mpath->dst, ETH_ALEN);
1021         mpath_set_pinfo(mpath, next_hop, pinfo);
1022         rcu_read_unlock();
1023         return 0;
1024 }
1025
1026 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1027                                 struct net_device *dev,
1028                                 struct mesh_config *conf)
1029 {
1030         struct ieee80211_sub_if_data *sdata;
1031         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1032
1033         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1034         return 0;
1035 }
1036
1037 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1038 {
1039         return (mask >> (parm-1)) & 0x1;
1040 }
1041
1042 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1043                 const struct mesh_setup *setup)
1044 {
1045         u8 *new_ie;
1046         const u8 *old_ie;
1047
1048         /* allocate information elements */
1049         new_ie = NULL;
1050         old_ie = ifmsh->ie;
1051
1052         if (setup->ie_len) {
1053                 new_ie = kmemdup(setup->ie, setup->ie_len,
1054                                 GFP_KERNEL);
1055                 if (!new_ie)
1056                         return -ENOMEM;
1057         }
1058         ifmsh->ie_len = setup->ie_len;
1059         ifmsh->ie = new_ie;
1060         kfree(old_ie);
1061
1062         /* now copy the rest of the setup parameters */
1063         ifmsh->mesh_id_len = setup->mesh_id_len;
1064         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1065         ifmsh->mesh_pp_id = setup->path_sel_proto;
1066         ifmsh->mesh_pm_id = setup->path_metric;
1067         ifmsh->is_secure = setup->is_secure;
1068
1069         return 0;
1070 }
1071
1072 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1073                                         struct net_device *dev, u32 mask,
1074                                         const struct mesh_config *nconf)
1075 {
1076         struct mesh_config *conf;
1077         struct ieee80211_sub_if_data *sdata;
1078         struct ieee80211_if_mesh *ifmsh;
1079
1080         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1081         ifmsh = &sdata->u.mesh;
1082
1083         /* Set the config options which we are interested in setting */
1084         conf = &(sdata->u.mesh.mshcfg);
1085         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1086                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1087         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1088                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1089         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1090                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1091         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1092                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1093         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1094                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1095         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1096                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1097         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1098                 conf->dot11MeshTTL = nconf->element_ttl;
1099         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1100                 conf->auto_open_plinks = nconf->auto_open_plinks;
1101         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1102                 conf->dot11MeshHWMPmaxPREQretries =
1103                         nconf->dot11MeshHWMPmaxPREQretries;
1104         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1105                 conf->path_refresh_time = nconf->path_refresh_time;
1106         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1107                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1108         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1109                 conf->dot11MeshHWMPactivePathTimeout =
1110                         nconf->dot11MeshHWMPactivePathTimeout;
1111         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1112                 conf->dot11MeshHWMPpreqMinInterval =
1113                         nconf->dot11MeshHWMPpreqMinInterval;
1114         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1115                            mask))
1116                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1117                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1118         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1119                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1120                 ieee80211_mesh_root_setup(ifmsh);
1121         }
1122         return 0;
1123 }
1124
1125 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1126                                const struct mesh_config *conf,
1127                                const struct mesh_setup *setup)
1128 {
1129         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1130         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1131         int err;
1132
1133         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1134         err = copy_mesh_setup(ifmsh, setup);
1135         if (err)
1136                 return err;
1137         ieee80211_start_mesh(sdata);
1138
1139         return 0;
1140 }
1141
1142 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1143 {
1144         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1145
1146         ieee80211_stop_mesh(sdata);
1147
1148         return 0;
1149 }
1150 #endif
1151
1152 static int ieee80211_change_bss(struct wiphy *wiphy,
1153                                 struct net_device *dev,
1154                                 struct bss_parameters *params)
1155 {
1156         struct ieee80211_sub_if_data *sdata;
1157         u32 changed = 0;
1158
1159         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1160
1161         if (params->use_cts_prot >= 0) {
1162                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1163                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1164         }
1165         if (params->use_short_preamble >= 0) {
1166                 sdata->vif.bss_conf.use_short_preamble =
1167                         params->use_short_preamble;
1168                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1169         }
1170
1171         if (!sdata->vif.bss_conf.use_short_slot &&
1172             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1173                 sdata->vif.bss_conf.use_short_slot = true;
1174                 changed |= BSS_CHANGED_ERP_SLOT;
1175         }
1176
1177         if (params->use_short_slot_time >= 0) {
1178                 sdata->vif.bss_conf.use_short_slot =
1179                         params->use_short_slot_time;
1180                 changed |= BSS_CHANGED_ERP_SLOT;
1181         }
1182
1183         if (params->basic_rates) {
1184                 int i, j;
1185                 u32 rates = 0;
1186                 struct ieee80211_local *local = wiphy_priv(wiphy);
1187                 struct ieee80211_supported_band *sband =
1188                         wiphy->bands[local->oper_channel->band];
1189
1190                 for (i = 0; i < params->basic_rates_len; i++) {
1191                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1192                         for (j = 0; j < sband->n_bitrates; j++) {
1193                                 if (sband->bitrates[j].bitrate == rate)
1194                                         rates |= BIT(j);
1195                         }
1196                 }
1197                 sdata->vif.bss_conf.basic_rates = rates;
1198                 changed |= BSS_CHANGED_BASIC_RATES;
1199         }
1200
1201         if (params->ap_isolate >= 0) {
1202                 if (params->ap_isolate)
1203                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1204                 else
1205                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1206         }
1207
1208         if (params->ht_opmode >= 0) {
1209                 sdata->vif.bss_conf.ht_operation_mode =
1210                         (u16) params->ht_opmode;
1211                 changed |= BSS_CHANGED_HT;
1212         }
1213
1214         ieee80211_bss_info_change_notify(sdata, changed);
1215
1216         return 0;
1217 }
1218
1219 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1220                                     struct ieee80211_txq_params *params)
1221 {
1222         struct ieee80211_local *local = wiphy_priv(wiphy);
1223         struct ieee80211_tx_queue_params p;
1224
1225         if (!local->ops->conf_tx)
1226                 return -EOPNOTSUPP;
1227
1228         memset(&p, 0, sizeof(p));
1229         p.aifs = params->aifs;
1230         p.cw_max = params->cwmax;
1231         p.cw_min = params->cwmin;
1232         p.txop = params->txop;
1233
1234         /*
1235          * Setting tx queue params disables u-apsd because it's only
1236          * called in master mode.
1237          */
1238         p.uapsd = false;
1239
1240         if (drv_conf_tx(local, params->queue, &p)) {
1241                 wiphy_debug(local->hw.wiphy,
1242                             "failed to set TX queue parameters for queue %d\n",
1243                             params->queue);
1244                 return -EINVAL;
1245         }
1246
1247         return 0;
1248 }
1249
1250 static int ieee80211_set_channel(struct wiphy *wiphy,
1251                                  struct net_device *netdev,
1252                                  struct ieee80211_channel *chan,
1253                                  enum nl80211_channel_type channel_type)
1254 {
1255         struct ieee80211_local *local = wiphy_priv(wiphy);
1256         struct ieee80211_sub_if_data *sdata = NULL;
1257         struct ieee80211_channel *old_oper;
1258         enum nl80211_channel_type old_oper_type;
1259         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1260
1261         if (netdev)
1262                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1263
1264         switch (ieee80211_get_channel_mode(local, NULL)) {
1265         case CHAN_MODE_HOPPING:
1266                 return -EBUSY;
1267         case CHAN_MODE_FIXED:
1268                 if (local->oper_channel != chan)
1269                         return -EBUSY;
1270                 if (!sdata && local->_oper_channel_type == channel_type)
1271                         return 0;
1272                 break;
1273         case CHAN_MODE_UNDEFINED:
1274                 break;
1275         }
1276
1277         if (sdata)
1278                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1279         old_oper_type = local->_oper_channel_type;
1280
1281         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1282                 return -EBUSY;
1283
1284         old_oper = local->oper_channel;
1285         local->oper_channel = chan;
1286
1287         /* Update driver if changes were actually made. */
1288         if ((old_oper != local->oper_channel) ||
1289             (old_oper_type != local->_oper_channel_type))
1290                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1291
1292         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1293             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1294                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1295
1296         return 0;
1297 }
1298
1299 #ifdef CONFIG_PM
1300 static int ieee80211_suspend(struct wiphy *wiphy)
1301 {
1302         return __ieee80211_suspend(wiphy_priv(wiphy));
1303 }
1304
1305 static int ieee80211_resume(struct wiphy *wiphy)
1306 {
1307         return __ieee80211_resume(wiphy_priv(wiphy));
1308 }
1309 #else
1310 #define ieee80211_suspend NULL
1311 #define ieee80211_resume NULL
1312 #endif
1313
1314 static int ieee80211_scan(struct wiphy *wiphy,
1315                           struct net_device *dev,
1316                           struct cfg80211_scan_request *req)
1317 {
1318         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1319
1320         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1321         case NL80211_IFTYPE_STATION:
1322         case NL80211_IFTYPE_ADHOC:
1323         case NL80211_IFTYPE_MESH_POINT:
1324         case NL80211_IFTYPE_P2P_CLIENT:
1325                 break;
1326         case NL80211_IFTYPE_P2P_GO:
1327                 if (sdata->local->ops->hw_scan)
1328                         break;
1329                 /*
1330                  * FIXME: implement NoA while scanning in software,
1331                  * for now fall through to allow scanning only when
1332                  * beaconing hasn't been configured yet
1333                  */
1334         case NL80211_IFTYPE_AP:
1335                 if (sdata->u.ap.beacon)
1336                         return -EOPNOTSUPP;
1337                 break;
1338         default:
1339                 return -EOPNOTSUPP;
1340         }
1341
1342         return ieee80211_request_scan(sdata, req);
1343 }
1344
1345 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1346                           struct cfg80211_auth_request *req)
1347 {
1348         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1349 }
1350
1351 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1352                            struct cfg80211_assoc_request *req)
1353 {
1354         struct ieee80211_local *local = wiphy_priv(wiphy);
1355         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1356
1357         switch (ieee80211_get_channel_mode(local, sdata)) {
1358         case CHAN_MODE_HOPPING:
1359                 return -EBUSY;
1360         case CHAN_MODE_FIXED:
1361                 if (local->oper_channel == req->bss->channel)
1362                         break;
1363                 return -EBUSY;
1364         case CHAN_MODE_UNDEFINED:
1365                 break;
1366         }
1367
1368         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1369 }
1370
1371 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1372                             struct cfg80211_deauth_request *req,
1373                             void *cookie)
1374 {
1375         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1376                                     req, cookie);
1377 }
1378
1379 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1380                               struct cfg80211_disassoc_request *req,
1381                               void *cookie)
1382 {
1383         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1384                                       req, cookie);
1385 }
1386
1387 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1388                                struct cfg80211_ibss_params *params)
1389 {
1390         struct ieee80211_local *local = wiphy_priv(wiphy);
1391         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1392
1393         switch (ieee80211_get_channel_mode(local, sdata)) {
1394         case CHAN_MODE_HOPPING:
1395                 return -EBUSY;
1396         case CHAN_MODE_FIXED:
1397                 if (!params->channel_fixed)
1398                         return -EBUSY;
1399                 if (local->oper_channel == params->channel)
1400                         break;
1401                 return -EBUSY;
1402         case CHAN_MODE_UNDEFINED:
1403                 break;
1404         }
1405
1406         return ieee80211_ibss_join(sdata, params);
1407 }
1408
1409 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1410 {
1411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1412
1413         return ieee80211_ibss_leave(sdata);
1414 }
1415
1416 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1417 {
1418         struct ieee80211_local *local = wiphy_priv(wiphy);
1419         int err;
1420
1421         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1422                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1423
1424                 if (err)
1425                         return err;
1426         }
1427
1428         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1429                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1430
1431                 if (err)
1432                         return err;
1433         }
1434
1435         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1436                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1437
1438                 if (err)
1439                         return err;
1440         }
1441
1442         if (changed & WIPHY_PARAM_RETRY_SHORT)
1443                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1444         if (changed & WIPHY_PARAM_RETRY_LONG)
1445                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1446         if (changed &
1447             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1448                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1449
1450         return 0;
1451 }
1452
1453 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1454                                   enum nl80211_tx_power_setting type, int mbm)
1455 {
1456         struct ieee80211_local *local = wiphy_priv(wiphy);
1457         struct ieee80211_channel *chan = local->hw.conf.channel;
1458         u32 changes = 0;
1459
1460         switch (type) {
1461         case NL80211_TX_POWER_AUTOMATIC:
1462                 local->user_power_level = -1;
1463                 break;
1464         case NL80211_TX_POWER_LIMITED:
1465                 if (mbm < 0 || (mbm % 100))
1466                         return -EOPNOTSUPP;
1467                 local->user_power_level = MBM_TO_DBM(mbm);
1468                 break;
1469         case NL80211_TX_POWER_FIXED:
1470                 if (mbm < 0 || (mbm % 100))
1471                         return -EOPNOTSUPP;
1472                 /* TODO: move to cfg80211 when it knows the channel */
1473                 if (MBM_TO_DBM(mbm) > chan->max_power)
1474                         return -EINVAL;
1475                 local->user_power_level = MBM_TO_DBM(mbm);
1476                 break;
1477         }
1478
1479         ieee80211_hw_config(local, changes);
1480
1481         return 0;
1482 }
1483
1484 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1485 {
1486         struct ieee80211_local *local = wiphy_priv(wiphy);
1487
1488         *dbm = local->hw.conf.power_level;
1489
1490         return 0;
1491 }
1492
1493 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1494                                   const u8 *addr)
1495 {
1496         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1497
1498         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1499
1500         return 0;
1501 }
1502
1503 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1504 {
1505         struct ieee80211_local *local = wiphy_priv(wiphy);
1506
1507         drv_rfkill_poll(local);
1508 }
1509
1510 #ifdef CONFIG_NL80211_TESTMODE
1511 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1512 {
1513         struct ieee80211_local *local = wiphy_priv(wiphy);
1514
1515         if (!local->ops->testmode_cmd)
1516                 return -EOPNOTSUPP;
1517
1518         return local->ops->testmode_cmd(&local->hw, data, len);
1519 }
1520 #endif
1521
1522 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1523                              enum ieee80211_smps_mode smps_mode)
1524 {
1525         const u8 *ap;
1526         enum ieee80211_smps_mode old_req;
1527         int err;
1528
1529         lockdep_assert_held(&sdata->u.mgd.mtx);
1530
1531         old_req = sdata->u.mgd.req_smps;
1532         sdata->u.mgd.req_smps = smps_mode;
1533
1534         if (old_req == smps_mode &&
1535             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1536                 return 0;
1537
1538         /*
1539          * If not associated, or current association is not an HT
1540          * association, there's no need to send an action frame.
1541          */
1542         if (!sdata->u.mgd.associated ||
1543             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1544                 mutex_lock(&sdata->local->iflist_mtx);
1545                 ieee80211_recalc_smps(sdata->local);
1546                 mutex_unlock(&sdata->local->iflist_mtx);
1547                 return 0;
1548         }
1549
1550         ap = sdata->u.mgd.associated->bssid;
1551
1552         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1553                 if (sdata->u.mgd.powersave)
1554                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1555                 else
1556                         smps_mode = IEEE80211_SMPS_OFF;
1557         }
1558
1559         /* send SM PS frame to AP */
1560         err = ieee80211_send_smps_action(sdata, smps_mode,
1561                                          ap, ap);
1562         if (err)
1563                 sdata->u.mgd.req_smps = old_req;
1564
1565         return err;
1566 }
1567
1568 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1569                                     bool enabled, int timeout)
1570 {
1571         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1572         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1573
1574         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1575                 return -EOPNOTSUPP;
1576
1577         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1578                 return -EOPNOTSUPP;
1579
1580         if (enabled == sdata->u.mgd.powersave &&
1581             timeout == local->dynamic_ps_forced_timeout)
1582                 return 0;
1583
1584         sdata->u.mgd.powersave = enabled;
1585         local->dynamic_ps_forced_timeout = timeout;
1586
1587         /* no change, but if automatic follow powersave */
1588         mutex_lock(&sdata->u.mgd.mtx);
1589         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1590         mutex_unlock(&sdata->u.mgd.mtx);
1591
1592         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1593                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1594
1595         ieee80211_recalc_ps(local, -1);
1596
1597         return 0;
1598 }
1599
1600 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1601                                          struct net_device *dev,
1602                                          s32 rssi_thold, u32 rssi_hyst)
1603 {
1604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1605         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1606         struct ieee80211_vif *vif = &sdata->vif;
1607         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1608
1609         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1610             rssi_hyst == bss_conf->cqm_rssi_hyst)
1611                 return 0;
1612
1613         bss_conf->cqm_rssi_thold = rssi_thold;
1614         bss_conf->cqm_rssi_hyst = rssi_hyst;
1615
1616         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1617                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1618                         return -EOPNOTSUPP;
1619                 return 0;
1620         }
1621
1622         /* tell the driver upon association, unless already associated */
1623         if (sdata->u.mgd.associated)
1624                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1625
1626         return 0;
1627 }
1628
1629 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1630                                       struct net_device *dev,
1631                                       const u8 *addr,
1632                                       const struct cfg80211_bitrate_mask *mask)
1633 {
1634         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1635         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1636         int i, ret;
1637
1638         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1639                 ret = drv_set_bitrate_mask(local, sdata, mask);
1640                 if (ret)
1641                         return ret;
1642         }
1643
1644         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1645                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1646
1647         return 0;
1648 }
1649
1650 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1651                                           struct net_device *dev,
1652                                           struct ieee80211_channel *chan,
1653                                           enum nl80211_channel_type chantype,
1654                                           unsigned int duration, u64 *cookie)
1655 {
1656         int ret;
1657         u32 random_cookie;
1658
1659         lockdep_assert_held(&local->mtx);
1660
1661         if (local->hw_roc_cookie)
1662                 return -EBUSY;
1663         /* must be nonzero */
1664         random_cookie = random32() | 1;
1665
1666         *cookie = random_cookie;
1667         local->hw_roc_dev = dev;
1668         local->hw_roc_cookie = random_cookie;
1669         local->hw_roc_channel = chan;
1670         local->hw_roc_channel_type = chantype;
1671         local->hw_roc_duration = duration;
1672         ret = drv_remain_on_channel(local, chan, chantype, duration);
1673         if (ret) {
1674                 local->hw_roc_channel = NULL;
1675                 local->hw_roc_cookie = 0;
1676         }
1677
1678         return ret;
1679 }
1680
1681 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1682                                        struct net_device *dev,
1683                                        struct ieee80211_channel *chan,
1684                                        enum nl80211_channel_type channel_type,
1685                                        unsigned int duration,
1686                                        u64 *cookie)
1687 {
1688         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1689         struct ieee80211_local *local = sdata->local;
1690
1691         if (local->ops->remain_on_channel) {
1692                 int ret;
1693
1694                 mutex_lock(&local->mtx);
1695                 ret = ieee80211_remain_on_channel_hw(local, dev,
1696                                                      chan, channel_type,
1697                                                      duration, cookie);
1698                 local->hw_roc_for_tx = false;
1699                 mutex_unlock(&local->mtx);
1700
1701                 return ret;
1702         }
1703
1704         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1705                                               duration, cookie);
1706 }
1707
1708 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1709                                                  u64 cookie)
1710 {
1711         int ret;
1712
1713         lockdep_assert_held(&local->mtx);
1714
1715         if (local->hw_roc_cookie != cookie)
1716                 return -ENOENT;
1717
1718         ret = drv_cancel_remain_on_channel(local);
1719         if (ret)
1720                 return ret;
1721
1722         local->hw_roc_cookie = 0;
1723         local->hw_roc_channel = NULL;
1724
1725         ieee80211_recalc_idle(local);
1726
1727         return 0;
1728 }
1729
1730 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1731                                               struct net_device *dev,
1732                                               u64 cookie)
1733 {
1734         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1735         struct ieee80211_local *local = sdata->local;
1736
1737         if (local->ops->cancel_remain_on_channel) {
1738                 int ret;
1739
1740                 mutex_lock(&local->mtx);
1741                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1742                 mutex_unlock(&local->mtx);
1743
1744                 return ret;
1745         }
1746
1747         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1748 }
1749
1750 static enum work_done_result
1751 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1752 {
1753         /*
1754          * Use the data embedded in the work struct for reporting
1755          * here so if the driver mangled the SKB before dropping
1756          * it (which is the only way we really should get here)
1757          * then we don't report mangled data.
1758          *
1759          * If there was no wait time, then by the time we get here
1760          * the driver will likely not have reported the status yet,
1761          * so in that case userspace will have to deal with it.
1762          */
1763
1764         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1765                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1766                                         (unsigned long) wk->offchan_tx.frame,
1767                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1768
1769         return WORK_DONE_DESTROY;
1770 }
1771
1772 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1773                              struct ieee80211_channel *chan, bool offchan,
1774                              enum nl80211_channel_type channel_type,
1775                              bool channel_type_valid, unsigned int wait,
1776                              const u8 *buf, size_t len, u64 *cookie)
1777 {
1778         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1779         struct ieee80211_local *local = sdata->local;
1780         struct sk_buff *skb;
1781         struct sta_info *sta;
1782         struct ieee80211_work *wk;
1783         const struct ieee80211_mgmt *mgmt = (void *)buf;
1784         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1785                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1786         bool is_offchan = false;
1787
1788         /* Check that we are on the requested channel for transmission */
1789         if (chan != local->tmp_channel &&
1790             chan != local->oper_channel)
1791                 is_offchan = true;
1792         if (channel_type_valid &&
1793             (channel_type != local->tmp_channel_type &&
1794              channel_type != local->_oper_channel_type))
1795                 is_offchan = true;
1796
1797         if (chan == local->hw_roc_channel) {
1798                 /* TODO: check channel type? */
1799                 is_offchan = false;
1800                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1801         }
1802
1803         if (is_offchan && !offchan)
1804                 return -EBUSY;
1805
1806         switch (sdata->vif.type) {
1807         case NL80211_IFTYPE_ADHOC:
1808         case NL80211_IFTYPE_AP:
1809         case NL80211_IFTYPE_AP_VLAN:
1810         case NL80211_IFTYPE_P2P_GO:
1811         case NL80211_IFTYPE_MESH_POINT:
1812                 if (!ieee80211_is_action(mgmt->frame_control) ||
1813                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1814                         break;
1815                 rcu_read_lock();
1816                 sta = sta_info_get(sdata, mgmt->da);
1817                 rcu_read_unlock();
1818                 if (!sta)
1819                         return -ENOLINK;
1820                 break;
1821         case NL80211_IFTYPE_STATION:
1822         case NL80211_IFTYPE_P2P_CLIENT:
1823                 break;
1824         default:
1825                 return -EOPNOTSUPP;
1826         }
1827
1828         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1829         if (!skb)
1830                 return -ENOMEM;
1831         skb_reserve(skb, local->hw.extra_tx_headroom);
1832
1833         memcpy(skb_put(skb, len), buf, len);
1834
1835         IEEE80211_SKB_CB(skb)->flags = flags;
1836
1837         skb->dev = sdata->dev;
1838
1839         *cookie = (unsigned long) skb;
1840
1841         if (is_offchan && local->ops->offchannel_tx) {
1842                 int ret;
1843
1844                 IEEE80211_SKB_CB(skb)->band = chan->band;
1845
1846                 mutex_lock(&local->mtx);
1847
1848                 if (local->hw_offchan_tx_cookie) {
1849                         mutex_unlock(&local->mtx);
1850                         return -EBUSY;
1851                 }
1852
1853                 /* TODO: bitrate control, TX processing? */
1854                 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1855
1856                 if (ret == 0)
1857                         local->hw_offchan_tx_cookie = *cookie;
1858                 mutex_unlock(&local->mtx);
1859
1860                 /*
1861                  * Allow driver to return 1 to indicate it wants to have the
1862                  * frame transmitted with a remain_on_channel + regular TX.
1863                  */
1864                 if (ret != 1)
1865                         return ret;
1866         }
1867
1868         if (is_offchan && local->ops->remain_on_channel) {
1869                 unsigned int duration;
1870                 int ret;
1871
1872                 mutex_lock(&local->mtx);
1873                 /*
1874                  * If the duration is zero, then the driver
1875                  * wouldn't actually do anything. Set it to
1876                  * 100 for now.
1877                  *
1878                  * TODO: cancel the off-channel operation
1879                  *       when we get the SKB's TX status and
1880                  *       the wait time was zero before.
1881                  */
1882                 duration = 100;
1883                 if (wait)
1884                         duration = wait;
1885                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1886                                                      channel_type,
1887                                                      duration, cookie);
1888                 if (ret) {
1889                         kfree_skb(skb);
1890                         mutex_unlock(&local->mtx);
1891                         return ret;
1892                 }
1893
1894                 local->hw_roc_for_tx = true;
1895                 local->hw_roc_duration = wait;
1896
1897                 /*
1898                  * queue up frame for transmission after
1899                  * ieee80211_ready_on_channel call
1900                  */
1901
1902                 /* modify cookie to prevent API mismatches */
1903                 *cookie ^= 2;
1904                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1905                 local->hw_roc_skb = skb;
1906                 local->hw_roc_skb_for_status = skb;
1907                 mutex_unlock(&local->mtx);
1908
1909                 return 0;
1910         }
1911
1912         /*
1913          * Can transmit right away if the channel was the
1914          * right one and there's no wait involved... If a
1915          * wait is involved, we might otherwise not be on
1916          * the right channel for long enough!
1917          */
1918         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1919                 ieee80211_tx_skb(sdata, skb);
1920                 return 0;
1921         }
1922
1923         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1924         if (!wk) {
1925                 kfree_skb(skb);
1926                 return -ENOMEM;
1927         }
1928
1929         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1930         wk->chan = chan;
1931         wk->chan_type = channel_type;
1932         wk->sdata = sdata;
1933         wk->done = ieee80211_offchan_tx_done;
1934         wk->offchan_tx.frame = skb;
1935         wk->offchan_tx.wait = wait;
1936         wk->ie_len = len;
1937         memcpy(wk->ie, buf, len);
1938
1939         ieee80211_add_work(wk);
1940         return 0;
1941 }
1942
1943 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1944                                          struct net_device *dev,
1945                                          u64 cookie)
1946 {
1947         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1948         struct ieee80211_local *local = sdata->local;
1949         struct ieee80211_work *wk;
1950         int ret = -ENOENT;
1951
1952         mutex_lock(&local->mtx);
1953
1954         if (local->ops->offchannel_tx_cancel_wait &&
1955             local->hw_offchan_tx_cookie == cookie) {
1956                 ret = drv_offchannel_tx_cancel_wait(local);
1957
1958                 if (!ret)
1959                         local->hw_offchan_tx_cookie = 0;
1960
1961                 mutex_unlock(&local->mtx);
1962
1963                 return ret;
1964         }
1965
1966         if (local->ops->cancel_remain_on_channel) {
1967                 cookie ^= 2;
1968                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1969
1970                 if (ret == 0) {
1971                         kfree_skb(local->hw_roc_skb);
1972                         local->hw_roc_skb = NULL;
1973                         local->hw_roc_skb_for_status = NULL;
1974                 }
1975
1976                 mutex_unlock(&local->mtx);
1977
1978                 return ret;
1979         }
1980
1981         list_for_each_entry(wk, &local->work_list, list) {
1982                 if (wk->sdata != sdata)
1983                         continue;
1984
1985                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
1986                         continue;
1987
1988                 if (cookie != (unsigned long) wk->offchan_tx.frame)
1989                         continue;
1990
1991                 wk->timeout = jiffies;
1992
1993                 ieee80211_queue_work(&local->hw, &local->work_work);
1994                 ret = 0;
1995                 break;
1996         }
1997         mutex_unlock(&local->mtx);
1998
1999         return ret;
2000 }
2001
2002 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2003                                           struct net_device *dev,
2004                                           u16 frame_type, bool reg)
2005 {
2006         struct ieee80211_local *local = wiphy_priv(wiphy);
2007
2008         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2009                 return;
2010
2011         if (reg)
2012                 local->probe_req_reg++;
2013         else
2014                 local->probe_req_reg--;
2015
2016         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2017 }
2018
2019 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2020 {
2021         struct ieee80211_local *local = wiphy_priv(wiphy);
2022
2023         if (local->started)
2024                 return -EOPNOTSUPP;
2025
2026         return drv_set_antenna(local, tx_ant, rx_ant);
2027 }
2028
2029 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2030 {
2031         struct ieee80211_local *local = wiphy_priv(wiphy);
2032
2033         return drv_get_antenna(local, tx_ant, rx_ant);
2034 }
2035
2036 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2037 {
2038         struct ieee80211_local *local = wiphy_priv(wiphy);
2039
2040         return drv_set_ringparam(local, tx, rx);
2041 }
2042
2043 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2044                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2045 {
2046         struct ieee80211_local *local = wiphy_priv(wiphy);
2047
2048         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2049 }
2050
2051 struct cfg80211_ops mac80211_config_ops = {
2052         .add_virtual_intf = ieee80211_add_iface,
2053         .del_virtual_intf = ieee80211_del_iface,
2054         .change_virtual_intf = ieee80211_change_iface,
2055         .add_key = ieee80211_add_key,
2056         .del_key = ieee80211_del_key,
2057         .get_key = ieee80211_get_key,
2058         .set_default_key = ieee80211_config_default_key,
2059         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2060         .add_beacon = ieee80211_add_beacon,
2061         .set_beacon = ieee80211_set_beacon,
2062         .del_beacon = ieee80211_del_beacon,
2063         .add_station = ieee80211_add_station,
2064         .del_station = ieee80211_del_station,
2065         .change_station = ieee80211_change_station,
2066         .get_station = ieee80211_get_station,
2067         .dump_station = ieee80211_dump_station,
2068         .dump_survey = ieee80211_dump_survey,
2069 #ifdef CONFIG_MAC80211_MESH
2070         .add_mpath = ieee80211_add_mpath,
2071         .del_mpath = ieee80211_del_mpath,
2072         .change_mpath = ieee80211_change_mpath,
2073         .get_mpath = ieee80211_get_mpath,
2074         .dump_mpath = ieee80211_dump_mpath,
2075         .update_mesh_config = ieee80211_update_mesh_config,
2076         .get_mesh_config = ieee80211_get_mesh_config,
2077         .join_mesh = ieee80211_join_mesh,
2078         .leave_mesh = ieee80211_leave_mesh,
2079 #endif
2080         .change_bss = ieee80211_change_bss,
2081         .set_txq_params = ieee80211_set_txq_params,
2082         .set_channel = ieee80211_set_channel,
2083         .suspend = ieee80211_suspend,
2084         .resume = ieee80211_resume,
2085         .scan = ieee80211_scan,
2086         .auth = ieee80211_auth,
2087         .assoc = ieee80211_assoc,
2088         .deauth = ieee80211_deauth,
2089         .disassoc = ieee80211_disassoc,
2090         .join_ibss = ieee80211_join_ibss,
2091         .leave_ibss = ieee80211_leave_ibss,
2092         .set_wiphy_params = ieee80211_set_wiphy_params,
2093         .set_tx_power = ieee80211_set_tx_power,
2094         .get_tx_power = ieee80211_get_tx_power,
2095         .set_wds_peer = ieee80211_set_wds_peer,
2096         .rfkill_poll = ieee80211_rfkill_poll,
2097         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2098         .set_power_mgmt = ieee80211_set_power_mgmt,
2099         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2100         .remain_on_channel = ieee80211_remain_on_channel,
2101         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2102         .mgmt_tx = ieee80211_mgmt_tx,
2103         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2104         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2105         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2106         .set_antenna = ieee80211_set_antenna,
2107         .get_antenna = ieee80211_get_antenna,
2108         .set_ringparam = ieee80211_set_ringparam,
2109         .get_ringparam = ieee80211_get_ringparam,
2110 };