SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 "ieee80211_rate.h"
  18 #include "mesh.h"
  19
  20 #define DEFAULT_RATES 0
  21
  22 static enum ieee80211_if_types
  23 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
  24 {
  25         switch (type) {
  26         case NL80211_IFTYPE_UNSPECIFIED:
  27                 return IEEE80211_IF_TYPE_STA;
  28         case NL80211_IFTYPE_ADHOC:
  29                 return IEEE80211_IF_TYPE_IBSS;
  30         case NL80211_IFTYPE_STATION:
  31                 return IEEE80211_IF_TYPE_STA;
  32         case NL80211_IFTYPE_MONITOR:
  33                 return IEEE80211_IF_TYPE_MNTR;
  34 #ifdef CONFIG_MAC80211_MESH
  35         case NL80211_IFTYPE_MESH_POINT:
  36                 return IEEE80211_IF_TYPE_MESH_POINT;
  37 #endif
  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         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  54                 return -ENODEV;
  55
  56         itype = nl80211_type_to_mac80211_type(type);
  57         if (itype == IEEE80211_IF_TYPE_INVALID)
  58                 return -EINVAL;
  59
  60         err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
  61         if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
  62                 return err;
  63
  64         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  65         sdata->u.mntr_flags = *flags;
  66         return 0;
  67 }
  68
  69 static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
  70 {
  71         struct ieee80211_local *local = wiphy_priv(wiphy);
  72         struct net_device *dev;
  73         char *name;
  74
  75         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  76                 return -ENODEV;
  77
  78         /* we're under RTNL */
  79         dev = __dev_get_by_index(&init_net, ifindex);
  80         if (!dev)
  81                 return 0;
  82
  83         name = dev->name;
  84
  85         return ieee80211_if_remove(local->mdev, name, -1);
  86 }
  87
  88 static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
  89                                   enum nl80211_iftype type, u32 *flags,
  90                                   struct vif_params *params)
  91 {
  92         struct ieee80211_local *local = wiphy_priv(wiphy);
  93         struct net_device *dev;
  94         enum ieee80211_if_types itype;
  95         struct ieee80211_sub_if_data *sdata;
  96
  97         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  98                 return -ENODEV;
  99
 100         /* we're under RTNL */
 101         dev = __dev_get_by_index(&init_net, ifindex);
 102         if (!dev)
 103                 return -ENODEV;
 104
 105         if (netif_running(dev))
 106                 return -EBUSY;
 107
 108         itype = nl80211_type_to_mac80211_type(type);
 109         if (itype == IEEE80211_IF_TYPE_INVALID)
 110                 return -EINVAL;
 111
 112         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 113
 114         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 115                 return -EOPNOTSUPP;
 116
 117         ieee80211_if_reinit(dev);
 118         ieee80211_if_set_type(dev, itype);
 119
 120         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
 121                 ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
 122                                              params->mesh_id_len,
 123                                              params->mesh_id);
 124
 125         if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
 126                 return 0;
 127
 128         sdata->u.mntr_flags = *flags;
 129         return 0;
 130 }
 131
 132 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 133                              u8 key_idx, u8 *mac_addr,
 134                              struct key_params *params)
 135 {
 136         struct ieee80211_sub_if_data *sdata;
 137         struct sta_info *sta = NULL;
 138         enum ieee80211_key_alg alg;
 139         int ret;
 140         struct ieee80211_key *key;
 141
 142         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 143
 144         switch (params->cipher) {
 145         case WLAN_CIPHER_SUITE_WEP40:
 146         case WLAN_CIPHER_SUITE_WEP104:
 147                 alg = ALG_WEP;
 148                 break;
 149         case WLAN_CIPHER_SUITE_TKIP:
 150                 alg = ALG_TKIP;
 151                 break;
 152         case WLAN_CIPHER_SUITE_CCMP:
 153                 alg = ALG_CCMP;
 154                 break;
 155         default:
 156                 return -EINVAL;
 157         }
 158
 159         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
 160         if (!key)
 161                 return -ENOMEM;
 162
 163         if (mac_addr) {
 164                 sta = sta_info_get(sdata->local, mac_addr);
 165                 if (!sta) {
 166                         ieee80211_key_free(key);
 167                         return -ENOENT;
 168                 }
 169         }
 170
 171         ieee80211_key_link(key, sdata, sta);
 172
 173         ret = 0;
 174
 175         if (sta)
 176                 sta_info_put(sta);
 177
 178         return ret;
 179 }
 180
 181 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 182                              u8 key_idx, u8 *mac_addr)
 183 {
 184         struct ieee80211_sub_if_data *sdata;
 185         struct sta_info *sta;
 186         int ret;
 187         struct ieee80211_key *key;
 188
 189         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 190
 191         if (mac_addr) {
 192                 sta = sta_info_get(sdata->local, mac_addr);
 193                 if (!sta)
 194                         return -ENOENT;
 195
 196                 ret = 0;
 197                 if (sta->key) {
 198                         key = sta->key;
 199                         ieee80211_key_free(key);
 200                         WARN_ON(sta->key);
 201                 } else
 202                         ret = -ENOENT;
 203
 204                 sta_info_put(sta);
 205                 return ret;
 206         }
 207
 208         if (!sdata->keys[key_idx])
 209                 return -ENOENT;
 210
 211         key = sdata->keys[key_idx];
 212         ieee80211_key_free(key);
 213         WARN_ON(sdata->keys[key_idx]);
 214
 215         return 0;
 216 }
 217
 218 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 219                              u8 key_idx, u8 *mac_addr, void *cookie,
 220                              void (*callback)(void *cookie,
 221                                               struct key_params *params))
 222 {
 223         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 224         struct sta_info *sta = NULL;
 225         u8 seq[6] = {0};
 226         struct key_params params;
 227         struct ieee80211_key *key;
 228         u32 iv32;
 229         u16 iv16;
 230         int err = -ENOENT;
 231
 232         if (mac_addr) {
 233                 sta = sta_info_get(sdata->local, mac_addr);
 234                 if (!sta)
 235                         goto out;
 236
 237                 key = sta->key;
 238         } else
 239                 key = sdata->keys[key_idx];
 240
 241         if (!key)
 242                 goto out;
 243
 244         memset(&params, 0, sizeof(params));
 245
 246         switch (key->conf.alg) {
 247         case ALG_TKIP:
 248                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 249
 250                 iv32 = key->u.tkip.iv32;
 251                 iv16 = key->u.tkip.iv16;
 252
 253                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 254                     sdata->local->ops->get_tkip_seq)
 255                         sdata->local->ops->get_tkip_seq(
 256                                 local_to_hw(sdata->local),
 257                                 key->conf.hw_key_idx,
 258                                 &iv32, &iv16);
 259
 260                 seq[0] = iv16 & 0xff;
 261                 seq[1] = (iv16 >> 8) & 0xff;
 262                 seq[2] = iv32 & 0xff;
 263                 seq[3] = (iv32 >> 8) & 0xff;
 264                 seq[4] = (iv32 >> 16) & 0xff;
 265                 seq[5] = (iv32 >> 24) & 0xff;
 266                 params.seq = seq;
 267                 params.seq_len = 6;
 268                 break;
 269         case ALG_CCMP:
 270                 params.cipher = WLAN_CIPHER_SUITE_CCMP;
 271                 seq[0] = key->u.ccmp.tx_pn[5];
 272                 seq[1] = key->u.ccmp.tx_pn[4];
 273                 seq[2] = key->u.ccmp.tx_pn[3];
 274                 seq[3] = key->u.ccmp.tx_pn[2];
 275                 seq[4] = key->u.ccmp.tx_pn[1];
 276                 seq[5] = key->u.ccmp.tx_pn[0];
 277                 params.seq = seq;
 278                 params.seq_len = 6;
 279                 break;
 280         case ALG_WEP:
 281                 if (key->conf.keylen == 5)
 282                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 283                 else
 284                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 285                 break;
 286         }
 287
 288         params.key = key->conf.key;
 289         params.key_len = key->conf.keylen;
 290
 291         callback(cookie, &params);
 292         err = 0;
 293
 294  out:
 295         if (sta)
 296                 sta_info_put(sta);
 297         return err;
 298 }
 299
 300 static int ieee80211_config_default_key(struct wiphy *wiphy,
 301                                         struct net_device *dev,
 302                                         u8 key_idx)
 303 {
 304         struct ieee80211_sub_if_data *sdata;
 305
 306         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 307         ieee80211_set_default_key(sdata, key_idx);
 308
 309         return 0;
 310 }
 311
 312 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 313 {
 314         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
 315
 316         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 317                         STATION_INFO_RX_BYTES |
 318                         STATION_INFO_TX_BYTES;
 319
 320         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 321         sinfo->rx_bytes = sta->rx_bytes;
 322         sinfo->tx_bytes = sta->tx_bytes;
 323
 324         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 325 #ifdef CONFIG_MAC80211_MESH
 326                 sinfo->filled |= STATION_INFO_LLID |
 327                                  STATION_INFO_PLID |
 328                                  STATION_INFO_PLINK_STATE;
 329
 330                 sinfo->llid = le16_to_cpu(sta->llid);
 331                 sinfo->plid = le16_to_cpu(sta->plid);
 332                 sinfo->plink_state = sta->plink_state;
 333 #endif
 334         }
 335 }
 336
 337
 338 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 339                                  int idx, u8 *mac, struct station_info *sinfo)
 340 {
 341         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 342         struct sta_info *sta;
 343
 344         sta = sta_info_get_by_idx(local, idx, dev);
 345         if (!sta)
 346                 return -ENOENT;
 347
 348         memcpy(mac, sta->addr, ETH_ALEN);
 349         sta_set_sinfo(sta, sinfo);
 350         sta_info_put(sta);
 351
 352         return 0;
 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
 361         sta = sta_info_get(local, mac);
 362         if (!sta)
 363                 return -ENOENT;
 364
 365         /* XXX: verify sta->dev == dev */
 366         sta_set_sinfo(sta, sinfo);
 367         sta_info_put(sta);
 368
 369         return 0;
 370 }
 371
 372 /*
 373  * This handles both adding a beacon and setting new beacon info
 374  */
 375 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 376                                    struct beacon_parameters *params)
 377 {
 378         struct beacon_data *new, *old;
 379         int new_head_len, new_tail_len;
 380         int size;
 381         int err = -EINVAL;
 382
 383         old = sdata->u.ap.beacon;
 384
 385         /* head must not be zero-length */
 386         if (params->head && !params->head_len)
 387                 return -EINVAL;
 388
 389         /*
 390          * This is a kludge. beacon interval should really be part
 391          * of the beacon information.
 392          */
 393         if (params->interval) {
 394                 sdata->local->hw.conf.beacon_int = params->interval;
 395                 if (ieee80211_hw_config(sdata->local))
 396                         return -EINVAL;
 397                 /*
 398                  * We updated some parameter so if below bails out
 399                  * it's not an error.
 400                  */
 401                 err = 0;
 402         }
 403
 404         /* Need to have a beacon head if we don't have one yet */
 405         if (!params->head && !old)
 406                 return err;
 407
 408         /* sorry, no way to start beaconing without dtim period */
 409         if (!params->dtim_period && !old)
 410                 return err;
 411
 412         /* new or old head? */
 413         if (params->head)
 414                 new_head_len = params->head_len;
 415         else
 416                 new_head_len = old->head_len;
 417
 418         /* new or old tail? */
 419         if (params->tail || !old)
 420                 /* params->tail_len will be zero for !params->tail */
 421                 new_tail_len = params->tail_len;
 422         else
 423                 new_tail_len = old->tail_len;
 424
 425         size = sizeof(*new) + new_head_len + new_tail_len;
 426
 427         new = kzalloc(size, GFP_KERNEL);
 428         if (!new)
 429                 return -ENOMEM;
 430
 431         /* start filling the new info now */
 432
 433         /* new or old dtim period? */
 434         if (params->dtim_period)
 435                 new->dtim_period = params->dtim_period;
 436         else
 437                 new->dtim_period = old->dtim_period;
 438
 439         /*
 440          * pointers go into the block we allocated,
 441          * memory is | beacon_data | head | tail |
 442          */
 443         new->head = ((u8 *) new) + sizeof(*new);
 444         new->tail = new->head + new_head_len;
 445         new->head_len = new_head_len;
 446         new->tail_len = new_tail_len;
 447
 448         /* copy in head */
 449         if (params->head)
 450                 memcpy(new->head, params->head, new_head_len);
 451         else
 452                 memcpy(new->head, old->head, new_head_len);
 453
 454         /* copy in optional tail */
 455         if (params->tail)
 456                 memcpy(new->tail, params->tail, new_tail_len);
 457         else
 458                 if (old)
 459                         memcpy(new->tail, old->tail, new_tail_len);
 460
 461         rcu_assign_pointer(sdata->u.ap.beacon, new);
 462
 463         synchronize_rcu();
 464
 465         kfree(old);
 466
 467         return ieee80211_if_config_beacon(sdata->dev);
 468 }
 469
 470 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 471                                 struct beacon_parameters *params)
 472 {
 473         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 474         struct beacon_data *old;
 475
 476         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 477                 return -EINVAL;
 478
 479         old = sdata->u.ap.beacon;
 480
 481         if (old)
 482                 return -EALREADY;
 483
 484         return ieee80211_config_beacon(sdata, params);
 485 }
 486
 487 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 488                                 struct beacon_parameters *params)
 489 {
 490         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 491         struct beacon_data *old;
 492
 493         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 494                 return -EINVAL;
 495
 496         old = sdata->u.ap.beacon;
 497
 498         if (!old)
 499                 return -ENOENT;
 500
 501         return ieee80211_config_beacon(sdata, params);
 502 }
 503
 504 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 505 {
 506         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 507         struct beacon_data *old;
 508
 509         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 510                 return -EINVAL;
 511
 512         old = sdata->u.ap.beacon;
 513
 514         if (!old)
 515                 return -ENOENT;
 516
 517         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 518         synchronize_rcu();
 519         kfree(old);
 520
 521         return ieee80211_if_config_beacon(dev);
 522 }
 523
 524 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 525 struct iapp_layer2_update {
 526         u8 da[ETH_ALEN];        /* broadcast */
 527         u8 sa[ETH_ALEN];        /* STA addr */
 528         __be16 len;             /* 6 */
 529         u8 dsap;                /* 0 */
 530         u8 ssap;                /* 0 */
 531         u8 control;
 532         u8 xid_info[3];
 533 } __attribute__ ((packed));
 534
 535 static void ieee80211_send_layer2_update(struct sta_info *sta)
 536 {
 537         struct iapp_layer2_update *msg;
 538         struct sk_buff *skb;
 539
 540         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 541          * bridge devices */
 542
 543         skb = dev_alloc_skb(sizeof(*msg));
 544         if (!skb)
 545                 return;
 546         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 547
 548         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 549          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 550
 551         memset(msg->da, 0xff, ETH_ALEN);
 552         memcpy(msg->sa, sta->addr, ETH_ALEN);
 553         msg->len = htons(6);
 554         msg->dsap = 0;
 555         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 556         msg->control = 0xaf;    /* XID response lsb.1111F101.
 557                                  * F=0 (no poll command; unsolicited frame) */
 558         msg->xid_info[0] = 0x81;        /* XID format identifier */
 559         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 560         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 561
 562         skb->dev = sta->dev;
 563         skb->protocol = eth_type_trans(skb, sta->dev);
 564         memset(skb->cb, 0, sizeof(skb->cb));
 565         netif_rx(skb);
 566 }
 567
 568 static void sta_apply_parameters(struct ieee80211_local *local,
 569                                  struct sta_info *sta,
 570                                  struct station_parameters *params)
 571 {
 572         u32 rates;
 573         int i, j;
 574         struct ieee80211_supported_band *sband;
 575         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
 576
 577         if (params->station_flags & STATION_FLAG_CHANGED) {
 578                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 579                 if (params->station_flags & STATION_FLAG_AUTHORIZED)
 580                         sta->flags |= WLAN_STA_AUTHORIZED;
 581
 582                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 583                 if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
 584                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 585
 586                 sta->flags &= ~WLAN_STA_WME;
 587                 if (params->station_flags & STATION_FLAG_WME)
 588                         sta->flags |= WLAN_STA_WME;
 589         }
 590
 591         if (params->aid) {
 592                 sta->aid = params->aid;
 593                 if (sta->aid > IEEE80211_MAX_AID)
 594                         sta->aid = 0; /* XXX: should this be an error? */
 595         }
 596
 597         if (params->listen_interval >= 0)
 598                 sta->listen_interval = params->listen_interval;
 599
 600         if (params->supported_rates) {
 601                 rates = 0;
 602                 sband = local->hw.wiphy->bands[local->oper_channel->band];
 603
 604                 for (i = 0; i < params->supported_rates_len; i++) {
 605                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 606                         for (j = 0; j < sband->n_bitrates; j++) {
 607                                 if (sband->bitrates[j].bitrate == rate)
 608                                         rates |= BIT(j);
 609                         }
 610                 }
 611                 sta->supp_rates[local->oper_channel->band] = rates;
 612         }
 613
 614         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 615                 switch (params->plink_action) {
 616                 case PLINK_ACTION_OPEN:
 617                         mesh_plink_open(sta);
 618                         break;
 619                 case PLINK_ACTION_BLOCK:
 620                         mesh_plink_block(sta);
 621                         break;
 622                 }
 623         }
 624 }
 625
 626 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 627                                  u8 *mac, struct station_parameters *params)
 628 {
 629         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 630         struct sta_info *sta;
 631         struct ieee80211_sub_if_data *sdata;
 632
 633         /* Prevent a race with changing the rate control algorithm */
 634         if (!netif_running(dev))
 635                 return -ENETDOWN;
 636
 637         if (params->vlan) {
 638                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 639
 640                 if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 641                     sdata->vif.type != IEEE80211_IF_TYPE_AP)
 642                         return -EINVAL;
 643         } else
 644                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 645
 646         if (ieee80211_vif_is_mesh(&sdata->vif))
 647                 sta = mesh_plink_add(mac, DEFAULT_RATES, dev);
 648         else
 649                 sta = sta_info_add(local, dev, mac, GFP_KERNEL);
 650
 651         if (IS_ERR(sta))
 652                 return PTR_ERR(sta);
 653
 654         sta->dev = sdata->dev;
 655         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
 656             sdata->vif.type == IEEE80211_IF_TYPE_AP)
 657                 ieee80211_send_layer2_update(sta);
 658
 659         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 660
 661         sta_apply_parameters(local, sta, params);
 662
 663         rate_control_rate_init(sta, local);
 664
 665         sta_info_put(sta);
 666
 667         return 0;
 668 }
 669
 670 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 671                                  u8 *mac)
 672 {
 673         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 674         struct sta_info *sta;
 675
 676         if (mac) {
 677                 /* XXX: get sta belonging to dev */
 678                 sta = sta_info_get(local, mac);
 679                 if (!sta)
 680                         return -ENOENT;
 681
 682                 sta_info_free(sta);
 683                 sta_info_put(sta);
 684         } else
 685                 sta_info_flush(local, dev);
 686
 687         return 0;
 688 }
 689
 690 static int ieee80211_change_station(struct wiphy *wiphy,
 691                                     struct net_device *dev,
 692                                     u8 *mac,
 693                                     struct station_parameters *params)
 694 {
 695         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 696         struct sta_info *sta;
 697         struct ieee80211_sub_if_data *vlansdata;
 698
 699         /* XXX: get sta belonging to dev */
 700         sta = sta_info_get(local, mac);
 701         if (!sta)
 702                 return -ENOENT;
 703
 704         if (params->vlan && params->vlan != sta->dev) {
 705                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 706
 707                 if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 708                     vlansdata->vif.type != IEEE80211_IF_TYPE_AP)
 709                         return -EINVAL;
 710
 711                 sta->dev = params->vlan;
 712                 ieee80211_send_layer2_update(sta);
 713         }
 714
 715         sta_apply_parameters(local, sta, params);
 716
 717         sta_info_put(sta);
 718
 719         return 0;
 720 }
 721
 722 #ifdef CONFIG_MAC80211_MESH
 723 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 724                                  u8 *dst, u8 *next_hop)
 725 {
 726         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 727         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 728         struct mesh_path *mpath;
 729         struct sta_info *sta;
 730         int err;
 731
 732         if (!netif_running(dev))
 733                 return -ENETDOWN;
 734
 735         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 736                 return -ENOTSUPP;
 737
 738         sta = sta_info_get(local, next_hop);
 739         if (!sta)
 740                 return -ENOENT;
 741
 742         err = mesh_path_add(dst, dev);
 743         if (err)
 744                 return err;
 745
 746         rcu_read_lock();
 747         mpath = mesh_path_lookup(dst, dev);
 748         if (!mpath) {
 749                 rcu_read_unlock();
 750                 sta_info_put(sta);
 751                 return -ENXIO;
 752         }
 753         mesh_path_fix_nexthop(mpath, sta);
 754         sta_info_put(sta);
 755         rcu_read_unlock();
 756         return 0;
 757 }
 758
 759 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 760                                  u8 *dst)
 761 {
 762         if (dst)
 763                 return mesh_path_del(dst, dev);
 764
 765         mesh_path_flush(dev);
 766         return 0;
 767 }
 768
 769 static int ieee80211_change_mpath(struct wiphy *wiphy,
 770                                     struct net_device *dev,
 771                                     u8 *dst, u8 *next_hop)
 772 {
 773         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 774         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 775         struct mesh_path *mpath;
 776         struct sta_info *sta;
 777
 778         if (!netif_running(dev))
 779                 return -ENETDOWN;
 780
 781         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 782                 return -ENOTSUPP;
 783
 784         sta = sta_info_get(local, next_hop);
 785         if (!sta)
 786                 return -ENOENT;
 787
 788         rcu_read_lock();
 789         mpath = mesh_path_lookup(dst, dev);
 790         if (!mpath) {
 791                 rcu_read_unlock();
 792                 sta_info_put(sta);
 793                 return -ENOENT;
 794         }
 795
 796         mesh_path_fix_nexthop(mpath, sta);
 797         sta_info_put(sta);
 798         rcu_read_unlock();
 799         return 0;
 800 }
 801
 802 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 803                             struct mpath_info *pinfo)
 804 {
 805         if (mpath->next_hop)
 806                 memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
 807         else
 808                 memset(next_hop, 0, ETH_ALEN);
 809
 810         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 811                         MPATH_INFO_DSN |
 812                         MPATH_INFO_METRIC |
 813                         MPATH_INFO_EXPTIME |
 814                         MPATH_INFO_DISCOVERY_TIMEOUT |
 815                         MPATH_INFO_DISCOVERY_RETRIES |
 816                         MPATH_INFO_FLAGS;
 817
 818         pinfo->frame_qlen = mpath->frame_queue.qlen;
 819         pinfo->dsn = mpath->dsn;
 820         pinfo->metric = mpath->metric;
 821         if (time_before(jiffies, mpath->exp_time))
 822                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 823         pinfo->discovery_timeout =
 824                         jiffies_to_msecs(mpath->discovery_timeout);
 825         pinfo->discovery_retries = mpath->discovery_retries;
 826         pinfo->flags = 0;
 827         if (mpath->flags & MESH_PATH_ACTIVE)
 828                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 829         if (mpath->flags & MESH_PATH_RESOLVING)
 830                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 831         if (mpath->flags & MESH_PATH_DSN_VALID)
 832                 pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
 833         if (mpath->flags & MESH_PATH_FIXED)
 834                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 835         if (mpath->flags & MESH_PATH_RESOLVING)
 836                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 837
 838         pinfo->flags = mpath->flags;
 839 }
 840
 841 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 842                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 843
 844 {
 845         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 846         struct mesh_path *mpath;
 847
 848         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 849                 return -ENOTSUPP;
 850
 851         rcu_read_lock();
 852         mpath = mesh_path_lookup(dst, dev);
 853         if (!mpath) {
 854                 rcu_read_unlock();
 855                 return -ENOENT;
 856         }
 857         memcpy(dst, mpath->dst, ETH_ALEN);
 858         mpath_set_pinfo(mpath, next_hop, pinfo);
 859         rcu_read_unlock();
 860         return 0;
 861 }
 862
 863 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 864                                  int idx, u8 *dst, u8 *next_hop,
 865                                  struct mpath_info *pinfo)
 866 {
 867         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 868         struct mesh_path *mpath;
 869
 870         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 871                 return -ENOTSUPP;
 872
 873         rcu_read_lock();
 874         mpath = mesh_path_lookup_by_idx(idx, dev);
 875         if (!mpath) {
 876                 rcu_read_unlock();
 877                 return -ENOENT;
 878         }
 879         memcpy(dst, mpath->dst, ETH_ALEN);
 880         mpath_set_pinfo(mpath, next_hop, pinfo);
 881         rcu_read_unlock();
 882         return 0;
 883 }
 884 #endif
 885
 886 struct cfg80211_ops mac80211_config_ops = {
 887         .add_virtual_intf = ieee80211_add_iface,
 888         .del_virtual_intf = ieee80211_del_iface,
 889         .change_virtual_intf = ieee80211_change_iface,
 890         .add_key = ieee80211_add_key,
 891         .del_key = ieee80211_del_key,
 892         .get_key = ieee80211_get_key,
 893         .set_default_key = ieee80211_config_default_key,
 894         .add_beacon = ieee80211_add_beacon,
 895         .set_beacon = ieee80211_set_beacon,
 896         .del_beacon = ieee80211_del_beacon,
 897         .add_station = ieee80211_add_station,
 898         .del_station = ieee80211_del_station,
 899         .change_station = ieee80211_change_station,
 900         .get_station = ieee80211_get_station,
 901         .dump_station = ieee80211_dump_station,
 902 #ifdef CONFIG_MAC80211_MESH
 903         .add_mpath = ieee80211_add_mpath,
 904         .del_mpath = ieee80211_del_mpath,
 905         .change_mpath = ieee80211_change_mpath,
 906         .get_mpath = ieee80211_get_mpath,
 907         .dump_mpath = ieee80211_dump_mpath,
 908 #endif
 909 };