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)
 299 {
 300         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 301
 302         ieee80211_set_default_key(sdata, key_idx);
 303
 304         return 0;
 305 }
 306
 307 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 308                                              struct net_device *dev,
 309                                              u8 key_idx)
 310 {
 311         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 312
 313         ieee80211_set_default_mgmt_key(sdata, key_idx);
 314
 315         return 0;
 316 }
 317
 318 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 319 {
 320         struct ieee80211_sub_if_data *sdata = sta->sdata;
 321
 322         sinfo->generation = sdata->local->sta_generation;
 323
 324         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 325                         STATION_INFO_RX_BYTES |
 326                         STATION_INFO_TX_BYTES |
 327                         STATION_INFO_RX_PACKETS |
 328                         STATION_INFO_TX_PACKETS |
 329                         STATION_INFO_TX_RETRIES |
 330                         STATION_INFO_TX_FAILED |
 331                         STATION_INFO_TX_BITRATE |
 332                         STATION_INFO_RX_DROP_MISC;
 333
 334         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 335         sinfo->rx_bytes = sta->rx_bytes;
 336         sinfo->tx_bytes = sta->tx_bytes;
 337         sinfo->rx_packets = sta->rx_packets;
 338         sinfo->tx_packets = sta->tx_packets;
 339         sinfo->tx_retries = sta->tx_retry_count;
 340         sinfo->tx_failed = sta->tx_retry_failed;
 341         sinfo->rx_dropped_misc = sta->rx_dropped;
 342
 343         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 344             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 345                 sinfo->filled |= STATION_INFO_SIGNAL;
 346                 sinfo->signal = (s8)sta->last_signal;
 347         }
 348
 349         sinfo->txrate.flags = 0;
 350         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 351                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 352         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 353                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 354         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 355                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 356
 357         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 358                 struct ieee80211_supported_band *sband;
 359                 sband = sta->local->hw.wiphy->bands[
 360                                 sta->local->hw.conf.channel->band];
 361                 sinfo->txrate.legacy =
 362                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 363         } else
 364                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 365
 366         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 367 #ifdef CONFIG_MAC80211_MESH
 368                 sinfo->filled |= STATION_INFO_LLID |
 369                                  STATION_INFO_PLID |
 370                                  STATION_INFO_PLINK_STATE;
 371
 372                 sinfo->llid = le16_to_cpu(sta->llid);
 373                 sinfo->plid = le16_to_cpu(sta->plid);
 374                 sinfo->plink_state = sta->plink_state;
 375 #endif
 376         }
 377 }
 378
 379
 380 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 381                                  int idx, u8 *mac, struct station_info *sinfo)
 382 {
 383         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 384         struct sta_info *sta;
 385         int ret = -ENOENT;
 386
 387         rcu_read_lock();
 388
 389         sta = sta_info_get_by_idx(sdata, idx);
 390         if (sta) {
 391                 ret = 0;
 392                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 393                 sta_set_sinfo(sta, sinfo);
 394         }
 395
 396         rcu_read_unlock();
 397
 398         return ret;
 399 }
 400
 401 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 402                                  int idx, struct survey_info *survey)
 403 {
 404         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 405
 406         return drv_get_survey(local, idx, survey);
 407 }
 408
 409 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 410                                  u8 *mac, struct station_info *sinfo)
 411 {
 412         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 413         struct sta_info *sta;
 414         int ret = -ENOENT;
 415
 416         rcu_read_lock();
 417
 418         sta = sta_info_get_bss(sdata, mac);
 419         if (sta) {
 420                 ret = 0;
 421                 sta_set_sinfo(sta, sinfo);
 422         }
 423
 424         rcu_read_unlock();
 425
 426         return ret;
 427 }
 428
 429 /*
 430  * This handles both adding a beacon and setting new beacon info
 431  */
 432 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 433                                    struct beacon_parameters *params)
 434 {
 435         struct beacon_data *new, *old;
 436         int new_head_len, new_tail_len;
 437         int size;
 438         int err = -EINVAL;
 439
 440         old = sdata->u.ap.beacon;
 441
 442         /* head must not be zero-length */
 443         if (params->head && !params->head_len)
 444                 return -EINVAL;
 445
 446         /*
 447          * This is a kludge. beacon interval should really be part
 448          * of the beacon information.
 449          */
 450         if (params->interval &&
 451             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 452                 sdata->vif.bss_conf.beacon_int = params->interval;
 453                 ieee80211_bss_info_change_notify(sdata,
 454                                                  BSS_CHANGED_BEACON_INT);
 455         }
 456
 457         /* Need to have a beacon head if we don't have one yet */
 458         if (!params->head && !old)
 459                 return err;
 460
 461         /* sorry, no way to start beaconing without dtim period */
 462         if (!params->dtim_period && !old)
 463                 return err;
 464
 465         /* new or old head? */
 466         if (params->head)
 467                 new_head_len = params->head_len;
 468         else
 469                 new_head_len = old->head_len;
 470
 471         /* new or old tail? */
 472         if (params->tail || !old)
 473                 /* params->tail_len will be zero for !params->tail */
 474                 new_tail_len = params->tail_len;
 475         else
 476                 new_tail_len = old->tail_len;
 477
 478         size = sizeof(*new) + new_head_len + new_tail_len;
 479
 480         new = kzalloc(size, GFP_KERNEL);
 481         if (!new)
 482                 return -ENOMEM;
 483
 484         /* start filling the new info now */
 485
 486         /* new or old dtim period? */
 487         if (params->dtim_period)
 488                 new->dtim_period = params->dtim_period;
 489         else
 490                 new->dtim_period = old->dtim_period;
 491
 492         /*
 493          * pointers go into the block we allocated,
 494          * memory is | beacon_data | head | tail |
 495          */
 496         new->head = ((u8 *) new) + sizeof(*new);
 497         new->tail = new->head + new_head_len;
 498         new->head_len = new_head_len;
 499         new->tail_len = new_tail_len;
 500
 501         /* copy in head */
 502         if (params->head)
 503                 memcpy(new->head, params->head, new_head_len);
 504         else
 505                 memcpy(new->head, old->head, new_head_len);
 506
 507         /* copy in optional tail */
 508         if (params->tail)
 509                 memcpy(new->tail, params->tail, new_tail_len);
 510         else
 511                 if (old)
 512                         memcpy(new->tail, old->tail, new_tail_len);
 513
 514         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 515
 516         rcu_assign_pointer(sdata->u.ap.beacon, new);
 517
 518         synchronize_rcu();
 519
 520         kfree(old);
 521
 522         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 523                                                 BSS_CHANGED_BEACON);
 524         return 0;
 525 }
 526
 527 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 528                                 struct beacon_parameters *params)
 529 {
 530         struct ieee80211_sub_if_data *sdata;
 531         struct beacon_data *old;
 532
 533         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 534
 535         old = sdata->u.ap.beacon;
 536
 537         if (old)
 538                 return -EALREADY;
 539
 540         return ieee80211_config_beacon(sdata, params);
 541 }
 542
 543 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 544                                 struct beacon_parameters *params)
 545 {
 546         struct ieee80211_sub_if_data *sdata;
 547         struct beacon_data *old;
 548
 549         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 550
 551         old = sdata->u.ap.beacon;
 552
 553         if (!old)
 554                 return -ENOENT;
 555
 556         return ieee80211_config_beacon(sdata, params);
 557 }
 558
 559 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 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 -ENOENT;
 570
 571         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 572         synchronize_rcu();
 573         kfree(old);
 574
 575         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 576         return 0;
 577 }
 578
 579 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 580 struct iapp_layer2_update {
 581         u8 da[ETH_ALEN];        /* broadcast */
 582         u8 sa[ETH_ALEN];        /* STA addr */
 583         __be16 len;             /* 6 */
 584         u8 dsap;                /* 0 */
 585         u8 ssap;                /* 0 */
 586         u8 control;
 587         u8 xid_info[3];
 588 } __packed;
 589
 590 static void ieee80211_send_layer2_update(struct sta_info *sta)
 591 {
 592         struct iapp_layer2_update *msg;
 593         struct sk_buff *skb;
 594
 595         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 596          * bridge devices */
 597
 598         skb = dev_alloc_skb(sizeof(*msg));
 599         if (!skb)
 600                 return;
 601         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 602
 603         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 604          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 605
 606         memset(msg->da, 0xff, ETH_ALEN);
 607         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 608         msg->len = htons(6);
 609         msg->dsap = 0;
 610         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 611         msg->control = 0xaf;    /* XID response lsb.1111F101.
 612                                  * F=0 (no poll command; unsolicited frame) */
 613         msg->xid_info[0] = 0x81;        /* XID format identifier */
 614         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 615         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 616
 617         skb->dev = sta->sdata->dev;
 618         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 619         memset(skb->cb, 0, sizeof(skb->cb));
 620         netif_rx_ni(skb);
 621 }
 622
 623 static void sta_apply_parameters(struct ieee80211_local *local,
 624                                  struct sta_info *sta,
 625                                  struct station_parameters *params)
 626 {
 627         unsigned long flags;
 628         u32 rates;
 629         int i, j;
 630         struct ieee80211_supported_band *sband;
 631         struct ieee80211_sub_if_data *sdata = sta->sdata;
 632         u32 mask, set;
 633
 634         sband = local->hw.wiphy->bands[local->oper_channel->band];
 635
 636         spin_lock_irqsave(&sta->flaglock, flags);
 637         mask = params->sta_flags_mask;
 638         set = params->sta_flags_set;
 639
 640         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 641                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 642                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 643                         sta->flags |= WLAN_STA_AUTHORIZED;
 644         }
 645
 646         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 647                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 648                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 649                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 650         }
 651
 652         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 653                 sta->flags &= ~WLAN_STA_WME;
 654                 if (set & BIT(NL80211_STA_FLAG_WME))
 655                         sta->flags |= WLAN_STA_WME;
 656         }
 657
 658         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 659                 sta->flags &= ~WLAN_STA_MFP;
 660                 if (set & BIT(NL80211_STA_FLAG_MFP))
 661                         sta->flags |= WLAN_STA_MFP;
 662         }
 663         spin_unlock_irqrestore(&sta->flaglock, flags);
 664
 665         /*
 666          * cfg80211 validates this (1-2007) and allows setting the AID
 667          * only when creating a new station entry
 668          */
 669         if (params->aid)
 670                 sta->sta.aid = params->aid;
 671
 672         /*
 673          * FIXME: updating the following information is racy when this
 674          *        function is called from ieee80211_change_station().
 675          *        However, all this information should be static so
 676          *        maybe we should just reject attemps to change it.
 677          */
 678
 679         if (params->listen_interval >= 0)
 680                 sta->listen_interval = params->listen_interval;
 681
 682         if (params->supported_rates) {
 683                 rates = 0;
 684
 685                 for (i = 0; i < params->supported_rates_len; i++) {
 686                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 687                         for (j = 0; j < sband->n_bitrates; j++) {
 688                                 if (sband->bitrates[j].bitrate == rate)
 689                                         rates |= BIT(j);
 690                         }
 691                 }
 692                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 693         }
 694
 695         if (params->ht_capa)
 696                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 697                                                   params->ht_capa,
 698                                                   &sta->sta.ht_cap);
 699
 700         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 701                 switch (params->plink_action) {
 702                 case PLINK_ACTION_OPEN:
 703                         mesh_plink_open(sta);
 704                         break;
 705                 case PLINK_ACTION_BLOCK:
 706                         mesh_plink_block(sta);
 707                         break;
 708                 }
 709         }
 710 }
 711
 712 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 713                                  u8 *mac, struct station_parameters *params)
 714 {
 715         struct ieee80211_local *local = wiphy_priv(wiphy);
 716         struct sta_info *sta;
 717         struct ieee80211_sub_if_data *sdata;
 718         int err;
 719         int layer2_update;
 720
 721         if (params->vlan) {
 722                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 723
 724                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 725                     sdata->vif.type != NL80211_IFTYPE_AP)
 726                         return -EINVAL;
 727         } else
 728                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 729
 730         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 731                 return -EINVAL;
 732
 733         if (is_multicast_ether_addr(mac))
 734                 return -EINVAL;
 735
 736         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 737         if (!sta)
 738                 return -ENOMEM;
 739
 740         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 741
 742         sta_apply_parameters(local, sta, params);
 743
 744         rate_control_rate_init(sta);
 745
 746         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 747                 sdata->vif.type == NL80211_IFTYPE_AP;
 748
 749         err = sta_info_insert_rcu(sta);
 750         if (err) {
 751                 rcu_read_unlock();
 752                 return err;
 753         }
 754
 755         if (layer2_update)
 756                 ieee80211_send_layer2_update(sta);
 757
 758         rcu_read_unlock();
 759
 760         return 0;
 761 }
 762
 763 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 764                                  u8 *mac)
 765 {
 766         struct ieee80211_local *local = wiphy_priv(wiphy);
 767         struct ieee80211_sub_if_data *sdata;
 768
 769         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 770
 771         if (mac)
 772                 return sta_info_destroy_addr_bss(sdata, mac);
 773
 774         sta_info_flush(local, sdata);
 775         return 0;
 776 }
 777
 778 static int ieee80211_change_station(struct wiphy *wiphy,
 779                                     struct net_device *dev,
 780                                     u8 *mac,
 781                                     struct station_parameters *params)
 782 {
 783         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 784         struct ieee80211_local *local = wiphy_priv(wiphy);
 785         struct sta_info *sta;
 786         struct ieee80211_sub_if_data *vlansdata;
 787
 788         rcu_read_lock();
 789
 790         sta = sta_info_get_bss(sdata, mac);
 791         if (!sta) {
 792                 rcu_read_unlock();
 793                 return -ENOENT;
 794         }
 795
 796         if (params->vlan && params->vlan != sta->sdata->dev) {
 797                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 798
 799                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 800                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 801                         rcu_read_unlock();
 802                         return -EINVAL;
 803                 }
 804
 805                 if (params->vlan->ieee80211_ptr->use_4addr) {
 806                         if (vlansdata->u.vlan.sta) {
 807                                 rcu_read_unlock();
 808                                 return -EBUSY;
 809                         }
 810
 811                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 812                 }
 813
 814                 sta->sdata = vlansdata;
 815                 ieee80211_send_layer2_update(sta);
 816         }
 817
 818         sta_apply_parameters(local, sta, params);
 819
 820         rcu_read_unlock();
 821
 822         return 0;
 823 }
 824
 825 #ifdef CONFIG_MAC80211_MESH
 826 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 827                                  u8 *dst, u8 *next_hop)
 828 {
 829         struct ieee80211_sub_if_data *sdata;
 830         struct mesh_path *mpath;
 831         struct sta_info *sta;
 832         int err;
 833
 834         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 835
 836         rcu_read_lock();
 837         sta = sta_info_get(sdata, next_hop);
 838         if (!sta) {
 839                 rcu_read_unlock();
 840                 return -ENOENT;
 841         }
 842
 843         err = mesh_path_add(dst, sdata);
 844         if (err) {
 845                 rcu_read_unlock();
 846                 return err;
 847         }
 848
 849         mpath = mesh_path_lookup(dst, sdata);
 850         if (!mpath) {
 851                 rcu_read_unlock();
 852                 return -ENXIO;
 853         }
 854         mesh_path_fix_nexthop(mpath, sta);
 855
 856         rcu_read_unlock();
 857         return 0;
 858 }
 859
 860 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 861                                  u8 *dst)
 862 {
 863         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 864
 865         if (dst)
 866                 return mesh_path_del(dst, sdata);
 867
 868         mesh_path_flush(sdata);
 869         return 0;
 870 }
 871
 872 static int ieee80211_change_mpath(struct wiphy *wiphy,
 873                                     struct net_device *dev,
 874                                     u8 *dst, u8 *next_hop)
 875 {
 876         struct ieee80211_sub_if_data *sdata;
 877         struct mesh_path *mpath;
 878         struct sta_info *sta;
 879
 880         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 881
 882         rcu_read_lock();
 883
 884         sta = sta_info_get(sdata, next_hop);
 885         if (!sta) {
 886                 rcu_read_unlock();
 887                 return -ENOENT;
 888         }
 889
 890         mpath = mesh_path_lookup(dst, sdata);
 891         if (!mpath) {
 892                 rcu_read_unlock();
 893                 return -ENOENT;
 894         }
 895
 896         mesh_path_fix_nexthop(mpath, sta);
 897
 898         rcu_read_unlock();
 899         return 0;
 900 }
 901
 902 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 903                             struct mpath_info *pinfo)
 904 {
 905         if (mpath->next_hop)
 906                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 907         else
 908                 memset(next_hop, 0, ETH_ALEN);
 909
 910         pinfo->generation = mesh_paths_generation;
 911
 912         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 913                         MPATH_INFO_SN |
 914                         MPATH_INFO_METRIC |
 915                         MPATH_INFO_EXPTIME |
 916                         MPATH_INFO_DISCOVERY_TIMEOUT |
 917                         MPATH_INFO_DISCOVERY_RETRIES |
 918                         MPATH_INFO_FLAGS;
 919
 920         pinfo->frame_qlen = mpath->frame_queue.qlen;
 921         pinfo->sn = mpath->sn;
 922         pinfo->metric = mpath->metric;
 923         if (time_before(jiffies, mpath->exp_time))
 924                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 925         pinfo->discovery_timeout =
 926                         jiffies_to_msecs(mpath->discovery_timeout);
 927         pinfo->discovery_retries = mpath->discovery_retries;
 928         pinfo->flags = 0;
 929         if (mpath->flags & MESH_PATH_ACTIVE)
 930                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 931         if (mpath->flags & MESH_PATH_RESOLVING)
 932                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 933         if (mpath->flags & MESH_PATH_SN_VALID)
 934                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 935         if (mpath->flags & MESH_PATH_FIXED)
 936                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 937         if (mpath->flags & MESH_PATH_RESOLVING)
 938                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 939
 940         pinfo->flags = mpath->flags;
 941 }
 942
 943 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 944                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 945
 946 {
 947         struct ieee80211_sub_if_data *sdata;
 948         struct mesh_path *mpath;
 949
 950         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 951
 952         rcu_read_lock();
 953         mpath = mesh_path_lookup(dst, sdata);
 954         if (!mpath) {
 955                 rcu_read_unlock();
 956                 return -ENOENT;
 957         }
 958         memcpy(dst, mpath->dst, ETH_ALEN);
 959         mpath_set_pinfo(mpath, next_hop, pinfo);
 960         rcu_read_unlock();
 961         return 0;
 962 }
 963
 964 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 965                                  int idx, u8 *dst, u8 *next_hop,
 966                                  struct mpath_info *pinfo)
 967 {
 968         struct ieee80211_sub_if_data *sdata;
 969         struct mesh_path *mpath;
 970
 971         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 972
 973         rcu_read_lock();
 974         mpath = mesh_path_lookup_by_idx(idx, sdata);
 975         if (!mpath) {
 976                 rcu_read_unlock();
 977                 return -ENOENT;
 978         }
 979         memcpy(dst, mpath->dst, ETH_ALEN);
 980         mpath_set_pinfo(mpath, next_hop, pinfo);
 981         rcu_read_unlock();
 982         return 0;
 983 }
 984
 985 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 986                                 struct net_device *dev,
 987                                 struct mesh_config *conf)
 988 {
 989         struct ieee80211_sub_if_data *sdata;
 990         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 991
 992         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
 993         return 0;
 994 }
 995
 996 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
 997 {
 998         return (mask >> (parm-1)) & 0x1;
 999 }
1000
1001 static int ieee80211_update_mesh_params(struct wiphy *wiphy,
1002                                         struct net_device *dev, u32 mask,
1003                                         const struct mesh_config *nconf)
1004 {
1005         struct mesh_config *conf;
1006         struct ieee80211_sub_if_data *sdata;
1007         struct ieee80211_if_mesh *ifmsh;
1008
1009         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1010         ifmsh = &sdata->u.mesh;
1011
1012         /* Set the config options which we are interested in setting */
1013         conf = &(sdata->u.mesh.mshcfg);
1014         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1015                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1016         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1017                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1018         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1019                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1020         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1021                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1022         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1023                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1024         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1025                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1026         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1027                 conf->dot11MeshTTL = nconf->element_ttl;
1028         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1029                 conf->auto_open_plinks = nconf->auto_open_plinks;
1030         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1031                 conf->dot11MeshHWMPmaxPREQretries =
1032                         nconf->dot11MeshHWMPmaxPREQretries;
1033         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1034                 conf->path_refresh_time = nconf->path_refresh_time;
1035         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1036                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1037         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1038                 conf->dot11MeshHWMPactivePathTimeout =
1039                         nconf->dot11MeshHWMPactivePathTimeout;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1041                 conf->dot11MeshHWMPpreqMinInterval =
1042                         nconf->dot11MeshHWMPpreqMinInterval;
1043         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1044                            mask))
1045                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1046                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1047         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1048                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1049                 ieee80211_mesh_root_setup(ifmsh);
1050         }
1051         return 0;
1052 }
1053
1054 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1055                                const struct mesh_config *conf,
1056                                const struct mesh_setup *setup)
1057 {
1058         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1059         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1060
1061         memcpy(&sdata->u.mesh.mshcfg, conf, sizeof(struct mesh_config));
1062         ifmsh->mesh_id_len = setup->mesh_id_len;
1063         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1064
1065         ieee80211_start_mesh(sdata);
1066
1067         return 0;
1068 }
1069
1070 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1071 {
1072         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1073
1074         ieee80211_stop_mesh(sdata);
1075
1076         return 0;
1077 }
1078 #endif
1079
1080 static int ieee80211_change_bss(struct wiphy *wiphy,
1081                                 struct net_device *dev,
1082                                 struct bss_parameters *params)
1083 {
1084         struct ieee80211_sub_if_data *sdata;
1085         u32 changed = 0;
1086
1087         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1088
1089         if (params->use_cts_prot >= 0) {
1090                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1091                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1092         }
1093         if (params->use_short_preamble >= 0) {
1094                 sdata->vif.bss_conf.use_short_preamble =
1095                         params->use_short_preamble;
1096                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1097         }
1098
1099         if (!sdata->vif.bss_conf.use_short_slot &&
1100             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1101                 sdata->vif.bss_conf.use_short_slot = true;
1102                 changed |= BSS_CHANGED_ERP_SLOT;
1103         }
1104
1105         if (params->use_short_slot_time >= 0) {
1106                 sdata->vif.bss_conf.use_short_slot =
1107                         params->use_short_slot_time;
1108                 changed |= BSS_CHANGED_ERP_SLOT;
1109         }
1110
1111         if (params->basic_rates) {
1112                 int i, j;
1113                 u32 rates = 0;
1114                 struct ieee80211_local *local = wiphy_priv(wiphy);
1115                 struct ieee80211_supported_band *sband =
1116                         wiphy->bands[local->oper_channel->band];
1117
1118                 for (i = 0; i < params->basic_rates_len; i++) {
1119                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1120                         for (j = 0; j < sband->n_bitrates; j++) {
1121                                 if (sband->bitrates[j].bitrate == rate)
1122                                         rates |= BIT(j);
1123                         }
1124                 }
1125                 sdata->vif.bss_conf.basic_rates = rates;
1126                 changed |= BSS_CHANGED_BASIC_RATES;
1127         }
1128
1129         if (params->ap_isolate >= 0) {
1130                 if (params->ap_isolate)
1131                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1132                 else
1133                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1134         }
1135
1136         ieee80211_bss_info_change_notify(sdata, changed);
1137
1138         return 0;
1139 }
1140
1141 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1142                                     struct ieee80211_txq_params *params)
1143 {
1144         struct ieee80211_local *local = wiphy_priv(wiphy);
1145         struct ieee80211_tx_queue_params p;
1146
1147         if (!local->ops->conf_tx)
1148                 return -EOPNOTSUPP;
1149
1150         memset(&p, 0, sizeof(p));
1151         p.aifs = params->aifs;
1152         p.cw_max = params->cwmax;
1153         p.cw_min = params->cwmin;
1154         p.txop = params->txop;
1155
1156         /*
1157          * Setting tx queue params disables u-apsd because it's only
1158          * called in master mode.
1159          */
1160         p.uapsd = false;
1161
1162         if (drv_conf_tx(local, params->queue, &p)) {
1163                 wiphy_debug(local->hw.wiphy,
1164                             "failed to set TX queue parameters for queue %d\n",
1165                             params->queue);
1166                 return -EINVAL;
1167         }
1168
1169         return 0;
1170 }
1171
1172 static int ieee80211_set_channel(struct wiphy *wiphy,
1173                                  struct net_device *netdev,
1174                                  struct ieee80211_channel *chan,
1175                                  enum nl80211_channel_type channel_type)
1176 {
1177         struct ieee80211_local *local = wiphy_priv(wiphy);
1178         struct ieee80211_sub_if_data *sdata = NULL;
1179
1180         if (netdev)
1181                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1182
1183         switch (ieee80211_get_channel_mode(local, NULL)) {
1184         case CHAN_MODE_HOPPING:
1185                 return -EBUSY;
1186         case CHAN_MODE_FIXED:
1187                 if (local->oper_channel != chan)
1188                         return -EBUSY;
1189                 if (!sdata && local->_oper_channel_type == channel_type)
1190                         return 0;
1191                 break;
1192         case CHAN_MODE_UNDEFINED:
1193                 break;
1194         }
1195
1196         local->oper_channel = chan;
1197
1198         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1199                 return -EBUSY;
1200
1201         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1202         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1203                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1204
1205         return 0;
1206 }
1207
1208 #ifdef CONFIG_PM
1209 static int ieee80211_suspend(struct wiphy *wiphy)
1210 {
1211         return __ieee80211_suspend(wiphy_priv(wiphy));
1212 }
1213
1214 static int ieee80211_resume(struct wiphy *wiphy)
1215 {
1216         return __ieee80211_resume(wiphy_priv(wiphy));
1217 }
1218 #else
1219 #define ieee80211_suspend NULL
1220 #define ieee80211_resume NULL
1221 #endif
1222
1223 static int ieee80211_scan(struct wiphy *wiphy,
1224                           struct net_device *dev,
1225                           struct cfg80211_scan_request *req)
1226 {
1227         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1228
1229         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1230         case NL80211_IFTYPE_STATION:
1231         case NL80211_IFTYPE_ADHOC:
1232         case NL80211_IFTYPE_MESH_POINT:
1233         case NL80211_IFTYPE_P2P_CLIENT:
1234                 break;
1235         case NL80211_IFTYPE_P2P_GO:
1236                 if (sdata->local->ops->hw_scan)
1237                         break;
1238                 /* FIXME: implement NoA while scanning in software */
1239                 return -EOPNOTSUPP;
1240         case NL80211_IFTYPE_AP:
1241                 if (sdata->u.ap.beacon)
1242                         return -EOPNOTSUPP;
1243                 break;
1244         default:
1245                 return -EOPNOTSUPP;
1246         }
1247
1248         return ieee80211_request_scan(sdata, req);
1249 }
1250
1251 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1252                           struct cfg80211_auth_request *req)
1253 {
1254         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1255 }
1256
1257 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1258                            struct cfg80211_assoc_request *req)
1259 {
1260         struct ieee80211_local *local = wiphy_priv(wiphy);
1261         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1262
1263         switch (ieee80211_get_channel_mode(local, sdata)) {
1264         case CHAN_MODE_HOPPING:
1265                 return -EBUSY;
1266         case CHAN_MODE_FIXED:
1267                 if (local->oper_channel == req->bss->channel)
1268                         break;
1269                 return -EBUSY;
1270         case CHAN_MODE_UNDEFINED:
1271                 break;
1272         }
1273
1274         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1275 }
1276
1277 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1278                             struct cfg80211_deauth_request *req,
1279                             void *cookie)
1280 {
1281         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1282                                     req, cookie);
1283 }
1284
1285 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1286                               struct cfg80211_disassoc_request *req,
1287                               void *cookie)
1288 {
1289         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1290                                       req, cookie);
1291 }
1292
1293 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1294                                struct cfg80211_ibss_params *params)
1295 {
1296         struct ieee80211_local *local = wiphy_priv(wiphy);
1297         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1298
1299         switch (ieee80211_get_channel_mode(local, sdata)) {
1300         case CHAN_MODE_HOPPING:
1301                 return -EBUSY;
1302         case CHAN_MODE_FIXED:
1303                 if (!params->channel_fixed)
1304                         return -EBUSY;
1305                 if (local->oper_channel == params->channel)
1306                         break;
1307                 return -EBUSY;
1308         case CHAN_MODE_UNDEFINED:
1309                 break;
1310         }
1311
1312         return ieee80211_ibss_join(sdata, params);
1313 }
1314
1315 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1316 {
1317         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1318
1319         return ieee80211_ibss_leave(sdata);
1320 }
1321
1322 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1323 {
1324         struct ieee80211_local *local = wiphy_priv(wiphy);
1325         int err;
1326
1327         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1328                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1329
1330                 if (err)
1331                         return err;
1332         }
1333
1334         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1335                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1336
1337                 if (err)
1338                         return err;
1339         }
1340
1341         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1342                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1343
1344                 if (err)
1345                         return err;
1346         }
1347
1348         if (changed & WIPHY_PARAM_RETRY_SHORT)
1349                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1350         if (changed & WIPHY_PARAM_RETRY_LONG)
1351                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1352         if (changed &
1353             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1354                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1355
1356         return 0;
1357 }
1358
1359 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1360                                   enum nl80211_tx_power_setting type, int mbm)
1361 {
1362         struct ieee80211_local *local = wiphy_priv(wiphy);
1363         struct ieee80211_channel *chan = local->hw.conf.channel;
1364         u32 changes = 0;
1365
1366         switch (type) {
1367         case NL80211_TX_POWER_AUTOMATIC:
1368                 local->user_power_level = -1;
1369                 break;
1370         case NL80211_TX_POWER_LIMITED:
1371                 if (mbm < 0 || (mbm % 100))
1372                         return -EOPNOTSUPP;
1373                 local->user_power_level = MBM_TO_DBM(mbm);
1374                 break;
1375         case NL80211_TX_POWER_FIXED:
1376                 if (mbm < 0 || (mbm % 100))
1377                         return -EOPNOTSUPP;
1378                 /* TODO: move to cfg80211 when it knows the channel */
1379                 if (MBM_TO_DBM(mbm) > chan->max_power)
1380                         return -EINVAL;
1381                 local->user_power_level = MBM_TO_DBM(mbm);
1382                 break;
1383         }
1384
1385         ieee80211_hw_config(local, changes);
1386
1387         return 0;
1388 }
1389
1390 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1391 {
1392         struct ieee80211_local *local = wiphy_priv(wiphy);
1393
1394         *dbm = local->hw.conf.power_level;
1395
1396         return 0;
1397 }
1398
1399 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1400                                   const u8 *addr)
1401 {
1402         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1403
1404         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1405
1406         return 0;
1407 }
1408
1409 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1410 {
1411         struct ieee80211_local *local = wiphy_priv(wiphy);
1412
1413         drv_rfkill_poll(local);
1414 }
1415
1416 #ifdef CONFIG_NL80211_TESTMODE
1417 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1418 {
1419         struct ieee80211_local *local = wiphy_priv(wiphy);
1420
1421         if (!local->ops->testmode_cmd)
1422                 return -EOPNOTSUPP;
1423
1424         return local->ops->testmode_cmd(&local->hw, data, len);
1425 }
1426 #endif
1427
1428 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1429                              enum ieee80211_smps_mode smps_mode)
1430 {
1431         const u8 *ap;
1432         enum ieee80211_smps_mode old_req;
1433         int err;
1434
1435         old_req = sdata->u.mgd.req_smps;
1436         sdata->u.mgd.req_smps = smps_mode;
1437
1438         if (old_req == smps_mode &&
1439             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1440                 return 0;
1441
1442         /*
1443          * If not associated, or current association is not an HT
1444          * association, there's no need to send an action frame.
1445          */
1446         if (!sdata->u.mgd.associated ||
1447             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1448                 mutex_lock(&sdata->local->iflist_mtx);
1449                 ieee80211_recalc_smps(sdata->local);
1450                 mutex_unlock(&sdata->local->iflist_mtx);
1451                 return 0;
1452         }
1453
1454         ap = sdata->u.mgd.associated->bssid;
1455
1456         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1457                 if (sdata->u.mgd.powersave)
1458                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1459                 else
1460                         smps_mode = IEEE80211_SMPS_OFF;
1461         }
1462
1463         /* send SM PS frame to AP */
1464         err = ieee80211_send_smps_action(sdata, smps_mode,
1465                                          ap, ap);
1466         if (err)
1467                 sdata->u.mgd.req_smps = old_req;
1468
1469         return err;
1470 }
1471
1472 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1473                                     bool enabled, int timeout)
1474 {
1475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1476         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1477
1478         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1479                 return -EOPNOTSUPP;
1480
1481         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1482                 return -EOPNOTSUPP;
1483
1484         if (enabled == sdata->u.mgd.powersave &&
1485             timeout == local->dynamic_ps_forced_timeout)
1486                 return 0;
1487
1488         sdata->u.mgd.powersave = enabled;
1489         local->dynamic_ps_forced_timeout = timeout;
1490
1491         /* no change, but if automatic follow powersave */
1492         mutex_lock(&sdata->u.mgd.mtx);
1493         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1494         mutex_unlock(&sdata->u.mgd.mtx);
1495
1496         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1497                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1498
1499         ieee80211_recalc_ps(local, -1);
1500
1501         return 0;
1502 }
1503
1504 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1505                                          struct net_device *dev,
1506                                          s32 rssi_thold, u32 rssi_hyst)
1507 {
1508         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1509         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1510         struct ieee80211_vif *vif = &sdata->vif;
1511         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1512
1513         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1514             rssi_hyst == bss_conf->cqm_rssi_hyst)
1515                 return 0;
1516
1517         bss_conf->cqm_rssi_thold = rssi_thold;
1518         bss_conf->cqm_rssi_hyst = rssi_hyst;
1519
1520         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1521                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1522                         return -EOPNOTSUPP;
1523                 return 0;
1524         }
1525
1526         /* tell the driver upon association, unless already associated */
1527         if (sdata->u.mgd.associated)
1528                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1529
1530         return 0;
1531 }
1532
1533 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1534                                       struct net_device *dev,
1535                                       const u8 *addr,
1536                                       const struct cfg80211_bitrate_mask *mask)
1537 {
1538         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1539         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1540         int i;
1541
1542         /*
1543          * This _could_ be supported by providing a hook for
1544          * drivers for this function, but at this point it
1545          * doesn't seem worth bothering.
1546          */
1547         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1548                 return -EOPNOTSUPP;
1549
1550
1551         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1552                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1553
1554         return 0;
1555 }
1556
1557 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1558                                        struct net_device *dev,
1559                                        struct ieee80211_channel *chan,
1560                                        enum nl80211_channel_type channel_type,
1561                                        unsigned int duration,
1562                                        u64 *cookie)
1563 {
1564         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1565
1566         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1567                                               duration, cookie);
1568 }
1569
1570 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1571                                               struct net_device *dev,
1572                                               u64 cookie)
1573 {
1574         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1575
1576         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1577 }
1578
1579 static enum work_done_result
1580 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1581 {
1582         /*
1583          * Use the data embedded in the work struct for reporting
1584          * here so if the driver mangled the SKB before dropping
1585          * it (which is the only way we really should get here)
1586          * then we don't report mangled data.
1587          *
1588          * If there was no wait time, then by the time we get here
1589          * the driver will likely not have reported the status yet,
1590          * so in that case userspace will have to deal with it.
1591          */
1592
1593         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1594                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1595                                         (unsigned long) wk->offchan_tx.frame,
1596                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1597
1598         return WORK_DONE_DESTROY;
1599 }
1600
1601 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1602                              struct ieee80211_channel *chan, bool offchan,
1603                              enum nl80211_channel_type channel_type,
1604                              bool channel_type_valid, unsigned int wait,
1605                              const u8 *buf, size_t len, u64 *cookie)
1606 {
1607         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1608         struct ieee80211_local *local = sdata->local;
1609         struct sk_buff *skb;
1610         struct sta_info *sta;
1611         struct ieee80211_work *wk;
1612         const struct ieee80211_mgmt *mgmt = (void *)buf;
1613         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1614                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1615         bool is_offchan = false;
1616
1617         /* Check that we are on the requested channel for transmission */
1618         if (chan != local->tmp_channel &&
1619             chan != local->oper_channel)
1620                 is_offchan = true;
1621         if (channel_type_valid &&
1622             (channel_type != local->tmp_channel_type &&
1623              channel_type != local->_oper_channel_type))
1624                 is_offchan = true;
1625
1626         if (is_offchan && !offchan)
1627                 return -EBUSY;
1628
1629         switch (sdata->vif.type) {
1630         case NL80211_IFTYPE_ADHOC:
1631         case NL80211_IFTYPE_AP:
1632         case NL80211_IFTYPE_AP_VLAN:
1633         case NL80211_IFTYPE_P2P_GO:
1634                 if (!ieee80211_is_action(mgmt->frame_control) ||
1635                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1636                         break;
1637                 rcu_read_lock();
1638                 sta = sta_info_get(sdata, mgmt->da);
1639                 rcu_read_unlock();
1640                 if (!sta)
1641                         return -ENOLINK;
1642                 break;
1643         case NL80211_IFTYPE_STATION:
1644         case NL80211_IFTYPE_P2P_CLIENT:
1645                 break;
1646         default:
1647                 return -EOPNOTSUPP;
1648         }
1649
1650         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1651         if (!skb)
1652                 return -ENOMEM;
1653         skb_reserve(skb, local->hw.extra_tx_headroom);
1654
1655         memcpy(skb_put(skb, len), buf, len);
1656
1657         IEEE80211_SKB_CB(skb)->flags = flags;
1658
1659         skb->dev = sdata->dev;
1660
1661         *cookie = (unsigned long) skb;
1662
1663         /*
1664          * Can transmit right away if the channel was the
1665          * right one and there's no wait involved... If a
1666          * wait is involved, we might otherwise not be on
1667          * the right channel for long enough!
1668          */
1669         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1670                 ieee80211_tx_skb(sdata, skb);
1671                 return 0;
1672         }
1673
1674         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1675         if (!wk) {
1676                 kfree_skb(skb);
1677                 return -ENOMEM;
1678         }
1679
1680         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1681         wk->chan = chan;
1682         wk->sdata = sdata;
1683         wk->done = ieee80211_offchan_tx_done;
1684         wk->offchan_tx.frame = skb;
1685         wk->offchan_tx.wait = wait;
1686         wk->ie_len = len;
1687         memcpy(wk->ie, buf, len);
1688
1689         ieee80211_add_work(wk);
1690         return 0;
1691 }
1692
1693 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1694                                          struct net_device *dev,
1695                                          u64 cookie)
1696 {
1697         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1698         struct ieee80211_local *local = sdata->local;
1699         struct ieee80211_work *wk;
1700         int ret = -ENOENT;
1701
1702         mutex_lock(&local->mtx);
1703         list_for_each_entry(wk, &local->work_list, list) {
1704                 if (wk->sdata != sdata)
1705                         continue;
1706
1707                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
1708                         continue;
1709
1710                 if (cookie != (unsigned long) wk->offchan_tx.frame)
1711                         continue;
1712
1713                 wk->timeout = jiffies;
1714
1715                 ieee80211_queue_work(&local->hw, &local->work_work);
1716                 ret = 0;
1717                 break;
1718         }
1719         mutex_unlock(&local->mtx);
1720
1721         return ret;
1722 }
1723
1724 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
1725                                           struct net_device *dev,
1726                                           u16 frame_type, bool reg)
1727 {
1728         struct ieee80211_local *local = wiphy_priv(wiphy);
1729
1730         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
1731                 return;
1732
1733         if (reg)
1734                 local->probe_req_reg++;
1735         else
1736                 local->probe_req_reg--;
1737
1738         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
1739 }
1740
1741 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1742 {
1743         struct ieee80211_local *local = wiphy_priv(wiphy);
1744
1745         if (local->started)
1746                 return -EOPNOTSUPP;
1747
1748         return drv_set_antenna(local, tx_ant, rx_ant);
1749 }
1750
1751 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
1752 {
1753         struct ieee80211_local *local = wiphy_priv(wiphy);
1754
1755         return drv_get_antenna(local, tx_ant, rx_ant);
1756 }
1757
1758 struct cfg80211_ops mac80211_config_ops = {
1759         .add_virtual_intf = ieee80211_add_iface,
1760         .del_virtual_intf = ieee80211_del_iface,
1761         .change_virtual_intf = ieee80211_change_iface,
1762         .add_key = ieee80211_add_key,
1763         .del_key = ieee80211_del_key,
1764         .get_key = ieee80211_get_key,
1765         .set_default_key = ieee80211_config_default_key,
1766         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1767         .add_beacon = ieee80211_add_beacon,
1768         .set_beacon = ieee80211_set_beacon,
1769         .del_beacon = ieee80211_del_beacon,
1770         .add_station = ieee80211_add_station,
1771         .del_station = ieee80211_del_station,
1772         .change_station = ieee80211_change_station,
1773         .get_station = ieee80211_get_station,
1774         .dump_station = ieee80211_dump_station,
1775         .dump_survey = ieee80211_dump_survey,
1776 #ifdef CONFIG_MAC80211_MESH
1777         .add_mpath = ieee80211_add_mpath,
1778         .del_mpath = ieee80211_del_mpath,
1779         .change_mpath = ieee80211_change_mpath,
1780         .get_mpath = ieee80211_get_mpath,
1781         .dump_mpath = ieee80211_dump_mpath,
1782         .update_mesh_params = ieee80211_update_mesh_params,
1783         .get_mesh_params = ieee80211_get_mesh_params,
1784         .join_mesh = ieee80211_join_mesh,
1785         .leave_mesh = ieee80211_leave_mesh,
1786 #endif
1787         .change_bss = ieee80211_change_bss,
1788         .set_txq_params = ieee80211_set_txq_params,
1789         .set_channel = ieee80211_set_channel,
1790         .suspend = ieee80211_suspend,
1791         .resume = ieee80211_resume,
1792         .scan = ieee80211_scan,
1793         .auth = ieee80211_auth,
1794         .assoc = ieee80211_assoc,
1795         .deauth = ieee80211_deauth,
1796         .disassoc = ieee80211_disassoc,
1797         .join_ibss = ieee80211_join_ibss,
1798         .leave_ibss = ieee80211_leave_ibss,
1799         .set_wiphy_params = ieee80211_set_wiphy_params,
1800         .set_tx_power = ieee80211_set_tx_power,
1801         .get_tx_power = ieee80211_get_tx_power,
1802         .set_wds_peer = ieee80211_set_wds_peer,
1803         .rfkill_poll = ieee80211_rfkill_poll,
1804         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1805         .set_power_mgmt = ieee80211_set_power_mgmt,
1806         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1807         .remain_on_channel = ieee80211_remain_on_channel,
1808         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1809         .mgmt_tx = ieee80211_mgmt_tx,
1810         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
1811         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1812         .mgmt_frame_register = ieee80211_mgmt_frame_register,
1813         .set_antenna = ieee80211_set_antenna,
1814         .get_antenna = ieee80211_get_antenna,
1815 };