net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006, 2007 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 <net/net_namespace.h>
  13 #include <linux/rcupdate.h>
  14 #include <net/cfg80211.h>
  15 #include "ieee80211_i.h"
  16 #include "cfg.h"
  17 #include "rate.h"
  18 #include "mesh.h"
  19
  20 static enum ieee80211_if_types
  21 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
  22 {
  23         switch (type) {
  24         case NL80211_IFTYPE_UNSPECIFIED:
  25                 return IEEE80211_IF_TYPE_STA;
  26         case NL80211_IFTYPE_ADHOC:
  27                 return IEEE80211_IF_TYPE_IBSS;
  28         case NL80211_IFTYPE_STATION:
  29                 return IEEE80211_IF_TYPE_STA;
  30         case NL80211_IFTYPE_MONITOR:
  31                 return IEEE80211_IF_TYPE_MNTR;
  32 #ifdef CONFIG_MAC80211_MESH
  33         case NL80211_IFTYPE_MESH_POINT:
  34                 return IEEE80211_IF_TYPE_MESH_POINT;
  35 #endif
  36         case NL80211_IFTYPE_WDS:
  37                 return IEEE80211_IF_TYPE_WDS;
  38         default:
  39                 return IEEE80211_IF_TYPE_INVALID;
  40         }
  41 }
  42
  43 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  44                                enum nl80211_iftype type, u32 *flags,
  45                                struct vif_params *params)
  46 {
  47         struct ieee80211_local *local = wiphy_priv(wiphy);
  48         enum ieee80211_if_types itype;
  49         struct net_device *dev;
  50         struct ieee80211_sub_if_data *sdata;
  51         int err;
  52
  53         itype = nl80211_type_to_mac80211_type(type);
  54         if (itype == IEEE80211_IF_TYPE_INVALID)
  55                 return -EINVAL;
  56
  57         err = ieee80211_if_add(local, name, &dev, itype, params);
  58         if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
  59                 return err;
  60
  61         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         sdata->u.mntr_flags = *flags;
  63         return 0;
  64 }
  65
  66 static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
  67 {
  68         struct net_device *dev;
  69
  70         /* we're under RTNL */
  71         dev = __dev_get_by_index(&init_net, ifindex);
  72         if (!dev)
  73                 return -ENODEV;
  74
  75         ieee80211_if_remove(dev);
  76
  77         return 0;
  78 }
  79
  80 static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
  81                                   enum nl80211_iftype type, u32 *flags,
  82                                   struct vif_params *params)
  83 {
  84         struct net_device *dev;
  85         enum ieee80211_if_types itype;
  86         struct ieee80211_sub_if_data *sdata;
  87         int ret;
  88
  89         /* we're under RTNL */
  90         dev = __dev_get_by_index(&init_net, ifindex);
  91         if (!dev)
  92                 return -ENODEV;
  93
  94         itype = nl80211_type_to_mac80211_type(type);
  95         if (itype == IEEE80211_IF_TYPE_INVALID)
  96                 return -EINVAL;
  97
  98         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  99
 100         ret = ieee80211_if_change_type(sdata, itype);
 101         if (ret)
 102                 return ret;
 103
 104         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
 105                 ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
 106                                              params->mesh_id_len,
 107                                              params->mesh_id);
 108
 109         if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
 110                 return 0;
 111
 112         sdata->u.mntr_flags = *flags;
 113         return 0;
 114 }
 115
 116 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 117                              u8 key_idx, u8 *mac_addr,
 118                              struct key_params *params)
 119 {
 120         struct ieee80211_sub_if_data *sdata;
 121         struct sta_info *sta = NULL;
 122         enum ieee80211_key_alg alg;
 123         struct ieee80211_key *key;
 124         int err;
 125
 126         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 127
 128         switch (params->cipher) {
 129         case WLAN_CIPHER_SUITE_WEP40:
 130         case WLAN_CIPHER_SUITE_WEP104:
 131                 alg = ALG_WEP;
 132                 break;
 133         case WLAN_CIPHER_SUITE_TKIP:
 134                 alg = ALG_TKIP;
 135                 break;
 136         case WLAN_CIPHER_SUITE_CCMP:
 137                 alg = ALG_CCMP;
 138                 break;
 139         default:
 140                 return -EINVAL;
 141         }
 142
 143         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
 144         if (!key)
 145                 return -ENOMEM;
 146
 147         rcu_read_lock();
 148
 149         if (mac_addr) {
 150                 sta = sta_info_get(sdata->local, mac_addr);
 151                 if (!sta) {
 152                         ieee80211_key_free(key);
 153                         err = -ENOENT;
 154                         goto out_unlock;
 155                 }
 156         }
 157
 158         ieee80211_key_link(key, sdata, sta);
 159
 160         err = 0;
 161  out_unlock:
 162         rcu_read_unlock();
 163
 164         return err;
 165 }
 166
 167 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 168                              u8 key_idx, u8 *mac_addr)
 169 {
 170         struct ieee80211_sub_if_data *sdata;
 171         struct sta_info *sta;
 172         int ret;
 173
 174         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 175
 176         rcu_read_lock();
 177
 178         if (mac_addr) {
 179                 ret = -ENOENT;
 180
 181                 sta = sta_info_get(sdata->local, mac_addr);
 182                 if (!sta)
 183                         goto out_unlock;
 184
 185                 if (sta->key) {
 186                         ieee80211_key_free(sta->key);
 187                         WARN_ON(sta->key);
 188                         ret = 0;
 189                 }
 190
 191                 goto out_unlock;
 192         }
 193
 194         if (!sdata->keys[key_idx]) {
 195                 ret = -ENOENT;
 196                 goto out_unlock;
 197         }
 198
 199         ieee80211_key_free(sdata->keys[key_idx]);
 200         WARN_ON(sdata->keys[key_idx]);
 201
 202         ret = 0;
 203  out_unlock:
 204         rcu_read_unlock();
 205
 206         return ret;
 207 }
 208
 209 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 210                              u8 key_idx, u8 *mac_addr, void *cookie,
 211                              void (*callback)(void *cookie,
 212                                               struct key_params *params))
 213 {
 214         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 215         struct sta_info *sta = NULL;
 216         u8 seq[6] = {0};
 217         struct key_params params;
 218         struct ieee80211_key *key;
 219         u32 iv32;
 220         u16 iv16;
 221         int err = -ENOENT;
 222
 223         rcu_read_lock();
 224
 225         if (mac_addr) {
 226                 sta = sta_info_get(sdata->local, mac_addr);
 227                 if (!sta)
 228                         goto out;
 229
 230                 key = sta->key;
 231         } else
 232                 key = sdata->keys[key_idx];
 233
 234         if (!key)
 235                 goto out;
 236
 237         memset(&params, 0, sizeof(params));
 238
 239         switch (key->conf.alg) {
 240         case ALG_TKIP:
 241                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 242
 243                 iv32 = key->u.tkip.tx.iv32;
 244                 iv16 = key->u.tkip.tx.iv16;
 245
 246                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 247                     sdata->local->ops->get_tkip_seq)
 248                         sdata->local->ops->get_tkip_seq(
 249                                 local_to_hw(sdata->local),
 250                                 key->conf.hw_key_idx,
 251                                 &iv32, &iv16);
 252
 253                 seq[0] = iv16 & 0xff;
 254                 seq[1] = (iv16 >> 8) & 0xff;
 255                 seq[2] = iv32 & 0xff;
 256                 seq[3] = (iv32 >> 8) & 0xff;
 257                 seq[4] = (iv32 >> 16) & 0xff;
 258                 seq[5] = (iv32 >> 24) & 0xff;
 259                 params.seq = seq;
 260                 params.seq_len = 6;
 261                 break;
 262         case ALG_CCMP:
 263                 params.cipher = 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 ALG_WEP:
 274                 if (key->conf.keylen == 5)
 275                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 276                 else
 277                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 278                 break;
 279         }
 280
 281         params.key = key->conf.key;
 282         params.key_len = key->conf.keylen;
 283
 284         callback(cookie, &params);
 285         err = 0;
 286
 287  out:
 288         rcu_read_unlock();
 289         return err;
 290 }
 291
 292 static int ieee80211_config_default_key(struct wiphy *wiphy,
 293                                         struct net_device *dev,
 294                                         u8 key_idx)
 295 {
 296         struct ieee80211_sub_if_data *sdata;
 297
 298         rcu_read_lock();
 299
 300         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 301         ieee80211_set_default_key(sdata, key_idx);
 302
 303         rcu_read_unlock();
 304
 305         return 0;
 306 }
 307
 308 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 309 {
 310         struct ieee80211_sub_if_data *sdata = sta->sdata;
 311
 312         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 313                         STATION_INFO_RX_BYTES |
 314                         STATION_INFO_TX_BYTES;
 315
 316         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 317         sinfo->rx_bytes = sta->rx_bytes;
 318         sinfo->tx_bytes = sta->tx_bytes;
 319
 320         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 321 #ifdef CONFIG_MAC80211_MESH
 322                 sinfo->filled |= STATION_INFO_LLID |
 323                                  STATION_INFO_PLID |
 324                                  STATION_INFO_PLINK_STATE;
 325
 326                 sinfo->llid = le16_to_cpu(sta->llid);
 327                 sinfo->plid = le16_to_cpu(sta->plid);
 328                 sinfo->plink_state = sta->plink_state;
 329 #endif
 330         }
 331 }
 332
 333
 334 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 335                                  int idx, u8 *mac, struct station_info *sinfo)
 336 {
 337         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 338         struct sta_info *sta;
 339         int ret = -ENOENT;
 340
 341         rcu_read_lock();
 342
 343         sta = sta_info_get_by_idx(local, idx, dev);
 344         if (sta) {
 345                 ret = 0;
 346                 memcpy(mac, sta->addr, ETH_ALEN);
 347                 sta_set_sinfo(sta, sinfo);
 348         }
 349
 350         rcu_read_unlock();
 351
 352         return ret;
 353 }
 354
 355 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 356                                  u8 *mac, struct station_info *sinfo)
 357 {
 358         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 359         struct sta_info *sta;
 360         int ret = -ENOENT;
 361
 362         rcu_read_lock();
 363
 364         /* XXX: verify sta->dev == dev */
 365
 366         sta = sta_info_get(local, mac);
 367         if (sta) {
 368                 ret = 0;
 369                 sta_set_sinfo(sta, sinfo);
 370         }
 371
 372         rcu_read_unlock();
 373
 374         return ret;
 375 }
 376
 377 /*
 378  * This handles both adding a beacon and setting new beacon info
 379  */
 380 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 381                                    struct beacon_parameters *params)
 382 {
 383         struct beacon_data *new, *old;
 384         int new_head_len, new_tail_len;
 385         int size;
 386         int err = -EINVAL;
 387
 388         old = sdata->u.ap.beacon;
 389
 390         /* head must not be zero-length */
 391         if (params->head && !params->head_len)
 392                 return -EINVAL;
 393
 394         /*
 395          * This is a kludge. beacon interval should really be part
 396          * of the beacon information.
 397          */
 398         if (params->interval) {
 399                 sdata->local->hw.conf.beacon_int = params->interval;
 400                 if (ieee80211_hw_config(sdata->local))
 401                         return -EINVAL;
 402                 /*
 403                  * We updated some parameter so if below bails out
 404                  * it's not an error.
 405                  */
 406                 err = 0;
 407         }
 408
 409         /* Need to have a beacon head if we don't have one yet */
 410         if (!params->head && !old)
 411                 return err;
 412
 413         /* sorry, no way to start beaconing without dtim period */
 414         if (!params->dtim_period && !old)
 415                 return err;
 416
 417         /* new or old head? */
 418         if (params->head)
 419                 new_head_len = params->head_len;
 420         else
 421                 new_head_len = old->head_len;
 422
 423         /* new or old tail? */
 424         if (params->tail || !old)
 425                 /* params->tail_len will be zero for !params->tail */
 426                 new_tail_len = params->tail_len;
 427         else
 428                 new_tail_len = old->tail_len;
 429
 430         size = sizeof(*new) + new_head_len + new_tail_len;
 431
 432         new = kzalloc(size, GFP_KERNEL);
 433         if (!new)
 434                 return -ENOMEM;
 435
 436         /* start filling the new info now */
 437
 438         /* new or old dtim period? */
 439         if (params->dtim_period)
 440                 new->dtim_period = params->dtim_period;
 441         else
 442                 new->dtim_period = old->dtim_period;
 443
 444         /*
 445          * pointers go into the block we allocated,
 446          * memory is | beacon_data | head | tail |
 447          */
 448         new->head = ((u8 *) new) + sizeof(*new);
 449         new->tail = new->head + new_head_len;
 450         new->head_len = new_head_len;
 451         new->tail_len = new_tail_len;
 452
 453         /* copy in head */
 454         if (params->head)
 455                 memcpy(new->head, params->head, new_head_len);
 456         else
 457                 memcpy(new->head, old->head, new_head_len);
 458
 459         /* copy in optional tail */
 460         if (params->tail)
 461                 memcpy(new->tail, params->tail, new_tail_len);
 462         else
 463                 if (old)
 464                         memcpy(new->tail, old->tail, new_tail_len);
 465
 466         rcu_assign_pointer(sdata->u.ap.beacon, new);
 467
 468         synchronize_rcu();
 469
 470         kfree(old);
 471
 472         return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
 473 }
 474
 475 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 476                                 struct beacon_parameters *params)
 477 {
 478         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 479         struct beacon_data *old;
 480
 481         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 482                 return -EINVAL;
 483
 484         old = sdata->u.ap.beacon;
 485
 486         if (old)
 487                 return -EALREADY;
 488
 489         return ieee80211_config_beacon(sdata, params);
 490 }
 491
 492 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 493                                 struct beacon_parameters *params)
 494 {
 495         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 496         struct beacon_data *old;
 497
 498         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 499                 return -EINVAL;
 500
 501         old = sdata->u.ap.beacon;
 502
 503         if (!old)
 504                 return -ENOENT;
 505
 506         return ieee80211_config_beacon(sdata, params);
 507 }
 508
 509 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 510 {
 511         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 512         struct beacon_data *old;
 513
 514         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 515                 return -EINVAL;
 516
 517         old = sdata->u.ap.beacon;
 518
 519         if (!old)
 520                 return -ENOENT;
 521
 522         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 523         synchronize_rcu();
 524         kfree(old);
 525
 526         return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
 527 }
 528
 529 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 530 struct iapp_layer2_update {
 531         u8 da[ETH_ALEN];        /* broadcast */
 532         u8 sa[ETH_ALEN];        /* STA addr */
 533         __be16 len;             /* 6 */
 534         u8 dsap;                /* 0 */
 535         u8 ssap;                /* 0 */
 536         u8 control;
 537         u8 xid_info[3];
 538 } __attribute__ ((packed));
 539
 540 static void ieee80211_send_layer2_update(struct sta_info *sta)
 541 {
 542         struct iapp_layer2_update *msg;
 543         struct sk_buff *skb;
 544
 545         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 546          * bridge devices */
 547
 548         skb = dev_alloc_skb(sizeof(*msg));
 549         if (!skb)
 550                 return;
 551         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 552
 553         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 554          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 555
 556         memset(msg->da, 0xff, ETH_ALEN);
 557         memcpy(msg->sa, sta->addr, ETH_ALEN);
 558         msg->len = htons(6);
 559         msg->dsap = 0;
 560         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 561         msg->control = 0xaf;    /* XID response lsb.1111F101.
 562                                  * F=0 (no poll command; unsolicited frame) */
 563         msg->xid_info[0] = 0x81;        /* XID format identifier */
 564         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 565         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 566
 567         skb->dev = sta->sdata->dev;
 568         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 569         memset(skb->cb, 0, sizeof(skb->cb));
 570         netif_rx(skb);
 571 }
 572
 573 static void sta_apply_parameters(struct ieee80211_local *local,
 574                                  struct sta_info *sta,
 575                                  struct station_parameters *params)
 576 {
 577         u32 rates;
 578         int i, j;
 579         struct ieee80211_supported_band *sband;
 580         struct ieee80211_sub_if_data *sdata = sta->sdata;
 581
 582         /*
 583          * FIXME: updating the flags is racy when this function is
 584          *        called from ieee80211_change_station(), this will
 585          *        be resolved in a future patch.
 586          */
 587
 588         if (params->station_flags & STATION_FLAG_CHANGED) {
 589                 spin_lock_bh(&sta->lock);
 590                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 591                 if (params->station_flags & STATION_FLAG_AUTHORIZED)
 592                         sta->flags |= WLAN_STA_AUTHORIZED;
 593
 594                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 595                 if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
 596                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 597
 598                 sta->flags &= ~WLAN_STA_WME;
 599                 if (params->station_flags & STATION_FLAG_WME)
 600                         sta->flags |= WLAN_STA_WME;
 601                 spin_unlock_bh(&sta->lock);
 602         }
 603
 604         /*
 605          * FIXME: updating the following information is racy when this
 606          *        function is called from ieee80211_change_station().
 607          *        However, all this information should be static so
 608          *        maybe we should just reject attemps to change it.
 609          */
 610
 611         if (params->aid) {
 612                 sta->aid = params->aid;
 613                 if (sta->aid > IEEE80211_MAX_AID)
 614                         sta->aid = 0; /* XXX: should this be an error? */
 615         }
 616
 617         if (params->listen_interval >= 0)
 618                 sta->listen_interval = params->listen_interval;
 619
 620         if (params->supported_rates) {
 621                 rates = 0;
 622                 sband = local->hw.wiphy->bands[local->oper_channel->band];
 623
 624                 for (i = 0; i < params->supported_rates_len; i++) {
 625                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 626                         for (j = 0; j < sband->n_bitrates; j++) {
 627                                 if (sband->bitrates[j].bitrate == rate)
 628                                         rates |= BIT(j);
 629                         }
 630                 }
 631                 sta->supp_rates[local->oper_channel->band] = rates;
 632         }
 633
 634         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 635                 switch (params->plink_action) {
 636                 case PLINK_ACTION_OPEN:
 637                         mesh_plink_open(sta);
 638                         break;
 639                 case PLINK_ACTION_BLOCK:
 640                         mesh_plink_block(sta);
 641                         break;
 642                 }
 643         }
 644 }
 645
 646 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 647                                  u8 *mac, struct station_parameters *params)
 648 {
 649         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 650         struct sta_info *sta;
 651         struct ieee80211_sub_if_data *sdata;
 652         int err;
 653
 654         /* Prevent a race with changing the rate control algorithm */
 655         if (!netif_running(dev))
 656                 return -ENETDOWN;
 657
 658         if (params->vlan) {
 659                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 660
 661                 if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
 662                     sdata->vif.type != IEEE80211_IF_TYPE_AP)
 663                         return -EINVAL;
 664         } else
 665                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 666
 667         if (compare_ether_addr(mac, dev->dev_addr) == 0)
 668                 return -EINVAL;
 669
 670         if (is_multicast_ether_addr(mac))
 671                 return -EINVAL;
 672
 673         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 674         if (!sta)
 675                 return -ENOMEM;
 676
 677         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 678
 679         sta_apply_parameters(local, sta, params);
 680
 681         rate_control_rate_init(sta, local);
 682
 683         rcu_read_lock();
 684
 685         err = sta_info_insert(sta);
 686         if (err) {
 687                 /* STA has been freed */
 688                 rcu_read_unlock();
 689                 return err;
 690         }
 691
 692         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
 693             sdata->vif.type == IEEE80211_IF_TYPE_AP)
 694                 ieee80211_send_layer2_update(sta);
 695
 696         rcu_read_unlock();
 697
 698         return 0;
 699 }
 700
 701 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 702                                  u8 *mac)
 703 {
 704         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 705         struct ieee80211_local *local = sdata->local;
 706         struct sta_info *sta;
 707
 708         if (mac) {
 709                 rcu_read_lock();
 710
 711                 /* XXX: get sta belonging to dev */
 712                 sta = sta_info_get(local, mac);
 713                 if (!sta) {
 714                         rcu_read_unlock();
 715                         return -ENOENT;
 716                 }
 717
 718                 sta_info_unlink(&sta);
 719                 rcu_read_unlock();
 720
 721                 sta_info_destroy(sta);
 722         } else
 723                 sta_info_flush(local, sdata);
 724
 725         return 0;
 726 }
 727
 728 static int ieee80211_change_station(struct wiphy *wiphy,
 729                                     struct net_device *dev,
 730                                     u8 *mac,
 731                                     struct station_parameters *params)
 732 {
 733         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 734         struct sta_info *sta;
 735         struct ieee80211_sub_if_data *vlansdata;
 736
 737         rcu_read_lock();
 738
 739         /* XXX: get sta belonging to dev */
 740         sta = sta_info_get(local, mac);
 741         if (!sta) {
 742                 rcu_read_unlock();
 743                 return -ENOENT;
 744         }
 745
 746         if (params->vlan && params->vlan != sta->sdata->dev) {
 747                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 748
 749                 if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
 750                     vlansdata->vif.type != IEEE80211_IF_TYPE_AP) {
 751                         rcu_read_unlock();
 752                         return -EINVAL;
 753                 }
 754
 755                 sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 756                 ieee80211_send_layer2_update(sta);
 757         }
 758
 759         sta_apply_parameters(local, sta, params);
 760
 761         rcu_read_unlock();
 762
 763         return 0;
 764 }
 765
 766 #ifdef CONFIG_MAC80211_MESH
 767 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 768                                  u8 *dst, u8 *next_hop)
 769 {
 770         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 771         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 772         struct mesh_path *mpath;
 773         struct sta_info *sta;
 774         int err;
 775
 776         if (!netif_running(dev))
 777                 return -ENETDOWN;
 778
 779         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 780                 return -ENOTSUPP;
 781
 782         rcu_read_lock();
 783         sta = sta_info_get(local, next_hop);
 784         if (!sta) {
 785                 rcu_read_unlock();
 786                 return -ENOENT;
 787         }
 788
 789         err = mesh_path_add(dst, dev);
 790         if (err) {
 791                 rcu_read_unlock();
 792                 return err;
 793         }
 794
 795         mpath = mesh_path_lookup(dst, dev);
 796         if (!mpath) {
 797                 rcu_read_unlock();
 798                 return -ENXIO;
 799         }
 800         mesh_path_fix_nexthop(mpath, sta);
 801
 802         rcu_read_unlock();
 803         return 0;
 804 }
 805
 806 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 807                                  u8 *dst)
 808 {
 809         if (dst)
 810                 return mesh_path_del(dst, dev);
 811
 812         mesh_path_flush(dev);
 813         return 0;
 814 }
 815
 816 static int ieee80211_change_mpath(struct wiphy *wiphy,
 817                                     struct net_device *dev,
 818                                     u8 *dst, u8 *next_hop)
 819 {
 820         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 821         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 822         struct mesh_path *mpath;
 823         struct sta_info *sta;
 824
 825         if (!netif_running(dev))
 826                 return -ENETDOWN;
 827
 828         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 829                 return -ENOTSUPP;
 830
 831         rcu_read_lock();
 832
 833         sta = sta_info_get(local, next_hop);
 834         if (!sta) {
 835                 rcu_read_unlock();
 836                 return -ENOENT;
 837         }
 838
 839         mpath = mesh_path_lookup(dst, dev);
 840         if (!mpath) {
 841                 rcu_read_unlock();
 842                 return -ENOENT;
 843         }
 844
 845         mesh_path_fix_nexthop(mpath, sta);
 846
 847         rcu_read_unlock();
 848         return 0;
 849 }
 850
 851 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 852                             struct mpath_info *pinfo)
 853 {
 854         if (mpath->next_hop)
 855                 memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
 856         else
 857                 memset(next_hop, 0, ETH_ALEN);
 858
 859         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 860                         MPATH_INFO_DSN |
 861                         MPATH_INFO_METRIC |
 862                         MPATH_INFO_EXPTIME |
 863                         MPATH_INFO_DISCOVERY_TIMEOUT |
 864                         MPATH_INFO_DISCOVERY_RETRIES |
 865                         MPATH_INFO_FLAGS;
 866
 867         pinfo->frame_qlen = mpath->frame_queue.qlen;
 868         pinfo->dsn = mpath->dsn;
 869         pinfo->metric = mpath->metric;
 870         if (time_before(jiffies, mpath->exp_time))
 871                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 872         pinfo->discovery_timeout =
 873                         jiffies_to_msecs(mpath->discovery_timeout);
 874         pinfo->discovery_retries = mpath->discovery_retries;
 875         pinfo->flags = 0;
 876         if (mpath->flags & MESH_PATH_ACTIVE)
 877                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 878         if (mpath->flags & MESH_PATH_RESOLVING)
 879                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 880         if (mpath->flags & MESH_PATH_DSN_VALID)
 881                 pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
 882         if (mpath->flags & MESH_PATH_FIXED)
 883                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 884         if (mpath->flags & MESH_PATH_RESOLVING)
 885                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 886
 887         pinfo->flags = mpath->flags;
 888 }
 889
 890 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 891                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 892
 893 {
 894         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 895         struct mesh_path *mpath;
 896
 897         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 898                 return -ENOTSUPP;
 899
 900         rcu_read_lock();
 901         mpath = mesh_path_lookup(dst, dev);
 902         if (!mpath) {
 903                 rcu_read_unlock();
 904                 return -ENOENT;
 905         }
 906         memcpy(dst, mpath->dst, ETH_ALEN);
 907         mpath_set_pinfo(mpath, next_hop, pinfo);
 908         rcu_read_unlock();
 909         return 0;
 910 }
 911
 912 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 913                                  int idx, u8 *dst, u8 *next_hop,
 914                                  struct mpath_info *pinfo)
 915 {
 916         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 917         struct mesh_path *mpath;
 918
 919         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 920                 return -ENOTSUPP;
 921
 922         rcu_read_lock();
 923         mpath = mesh_path_lookup_by_idx(idx, dev);
 924         if (!mpath) {
 925                 rcu_read_unlock();
 926                 return -ENOENT;
 927         }
 928         memcpy(dst, mpath->dst, ETH_ALEN);
 929         mpath_set_pinfo(mpath, next_hop, pinfo);
 930         rcu_read_unlock();
 931         return 0;
 932 }
 933 #endif
 934
 935 struct cfg80211_ops mac80211_config_ops = {
 936         .add_virtual_intf = ieee80211_add_iface,
 937         .del_virtual_intf = ieee80211_del_iface,
 938         .change_virtual_intf = ieee80211_change_iface,
 939         .add_key = ieee80211_add_key,
 940         .del_key = ieee80211_del_key,
 941         .get_key = ieee80211_get_key,
 942         .set_default_key = ieee80211_config_default_key,
 943         .add_beacon = ieee80211_add_beacon,
 944         .set_beacon = ieee80211_set_beacon,
 945         .del_beacon = ieee80211_del_beacon,
 946         .add_station = ieee80211_add_station,
 947         .del_station = ieee80211_del_station,
 948         .change_station = ieee80211_change_station,
 949         .get_station = ieee80211_get_station,
 950         .dump_station = ieee80211_dump_station,
 951 #ifdef CONFIG_MAC80211_MESH
 952         .add_mpath = ieee80211_add_mpath,
 953         .del_mpath = ieee80211_del_mpath,
 954         .change_mpath = ieee80211_change_mpath,
 955         .get_mpath = ieee80211_get_mpath,
 956         .dump_mpath = ieee80211_dump_mpath,
 957 #endif
 958 };