SAFE public projects git trees. - safe/jmp/linux-2.6/blob - net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
   5  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/mutex.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <net/genetlink.h>
  18 #include <net/cfg80211.h>
  19 #include "core.h"
  20 #include "nl80211.h"
  21 #include "reg.h"
  22
  23 /* the netlink family */
  24 static struct genl_family nl80211_fam = {
  25         .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
  26         .name = "nl80211",      /* have users key off the name instead */
  27         .hdrsize = 0,           /* no private header */
  28         .version = 1,           /* no particular meaning now */
  29         .maxattr = NL80211_ATTR_MAX,
  30 };
  31
  32 /* internal helper: get drv and dev */
  33 static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
  34                                        struct cfg80211_registered_device **drv,
  35                                        struct net_device **dev)
  36 {
  37         int ifindex;
  38
  39         if (!attrs[NL80211_ATTR_IFINDEX])
  40                 return -EINVAL;
  41
  42         ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  43         *dev = dev_get_by_index(&init_net, ifindex);
  44         if (!*dev)
  45                 return -ENODEV;
  46
  47         *drv = cfg80211_get_dev_from_ifindex(ifindex);
  48         if (IS_ERR(*drv)) {
  49                 dev_put(*dev);
  50                 return PTR_ERR(*drv);
  51         }
  52
  53         return 0;
  54 }
  55
  56 /* policy for the attributes */
  57 static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
  58         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
  59         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
  60                                       .len = BUS_ID_SIZE-1 },
  61
  62         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
  63         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
  64         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
  65
  66         [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
  67
  68         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
  69                                     .len = WLAN_MAX_KEY_LEN },
  70         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
  71         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
  72         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
  73
  74         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
  75         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
  76         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
  77                                        .len = IEEE80211_MAX_DATA_LEN },
  78         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
  79                                        .len = IEEE80211_MAX_DATA_LEN },
  80         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
  81         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
  82         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
  83         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
  84                                                .len = NL80211_MAX_SUPP_RATES },
  85         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
  86         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
  87         [NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED },
  88         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
  89                                 .len = IEEE80211_MAX_MESH_ID_LEN },
  90         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
  91
  92         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
  93         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
  94
  95         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
  96         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
  97         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
  98
  99         [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
 100                                          .len = NL80211_HT_CAPABILITY_LEN },
 101 };
 102
 103 /* message building helper */
 104 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
 105                                    int flags, u8 cmd)
 106 {
 107         /* since there is no private header just add the generic one */
 108         return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
 109 }
 110
 111 /* netlink command implementations */
 112
 113 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 114                               struct cfg80211_registered_device *dev)
 115 {
 116         void *hdr;
 117         struct nlattr *nl_bands, *nl_band;
 118         struct nlattr *nl_freqs, *nl_freq;
 119         struct nlattr *nl_rates, *nl_rate;
 120         struct nlattr *nl_modes;
 121         enum ieee80211_band band;
 122         struct ieee80211_channel *chan;
 123         struct ieee80211_rate *rate;
 124         int i;
 125         u16 ifmodes = dev->wiphy.interface_modes;
 126
 127         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
 128         if (!hdr)
 129                 return -1;
 130
 131         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
 132         NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
 133
 134         nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
 135         if (!nl_modes)
 136                 goto nla_put_failure;
 137
 138         i = 0;
 139         while (ifmodes) {
 140                 if (ifmodes & 1)
 141                         NLA_PUT_FLAG(msg, i);
 142                 ifmodes >>= 1;
 143                 i++;
 144         }
 145
 146         nla_nest_end(msg, nl_modes);
 147
 148         nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 149         if (!nl_bands)
 150                 goto nla_put_failure;
 151
 152         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 153                 if (!dev->wiphy.bands[band])
 154                         continue;
 155
 156                 nl_band = nla_nest_start(msg, band);
 157                 if (!nl_band)
 158                         goto nla_put_failure;
 159
 160                 /* add HT info */
 161                 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
 162                         NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
 163                                 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
 164                                 &dev->wiphy.bands[band]->ht_cap.mcs);
 165                         NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
 166                                 dev->wiphy.bands[band]->ht_cap.cap);
 167                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
 168                                 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
 169                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
 170                                 dev->wiphy.bands[band]->ht_cap.ampdu_density);
 171                 }
 172
 173                 /* add frequencies */
 174                 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
 175                 if (!nl_freqs)
 176                         goto nla_put_failure;
 177
 178                 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
 179                         nl_freq = nla_nest_start(msg, i);
 180                         if (!nl_freq)
 181                                 goto nla_put_failure;
 182
 183                         chan = &dev->wiphy.bands[band]->channels[i];
 184                         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 185                                     chan->center_freq);
 186
 187                         if (chan->flags & IEEE80211_CHAN_DISABLED)
 188                                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
 189                         if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
 190                                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
 191                         if (chan->flags & IEEE80211_CHAN_NO_IBSS)
 192                                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
 193                         if (chan->flags & IEEE80211_CHAN_RADAR)
 194                                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
 195
 196                         nla_nest_end(msg, nl_freq);
 197                 }
 198
 199                 nla_nest_end(msg, nl_freqs);
 200
 201                 /* add bitrates */
 202                 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
 203                 if (!nl_rates)
 204                         goto nla_put_failure;
 205
 206                 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
 207                         nl_rate = nla_nest_start(msg, i);
 208                         if (!nl_rate)
 209                                 goto nla_put_failure;
 210
 211                         rate = &dev->wiphy.bands[band]->bitrates[i];
 212                         NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
 213                                     rate->bitrate);
 214                         if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
 215                                 NLA_PUT_FLAG(msg,
 216                                         NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
 217
 218                         nla_nest_end(msg, nl_rate);
 219                 }
 220
 221                 nla_nest_end(msg, nl_rates);
 222
 223                 nla_nest_end(msg, nl_band);
 224         }
 225         nla_nest_end(msg, nl_bands);
 226
 227         return genlmsg_end(msg, hdr);
 228
 229  nla_put_failure:
 230         genlmsg_cancel(msg, hdr);
 231         return -EMSGSIZE;
 232 }
 233
 234 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 235 {
 236         int idx = 0;
 237         int start = cb->args[0];
 238         struct cfg80211_registered_device *dev;
 239
 240         mutex_lock(&cfg80211_drv_mutex);
 241         list_for_each_entry(dev, &cfg80211_drv_list, list) {
 242                 if (++idx <= start)
 243                         continue;
 244                 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
 245                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
 246                                        dev) < 0) {
 247                         idx--;
 248                         break;
 249                 }
 250         }
 251         mutex_unlock(&cfg80211_drv_mutex);
 252
 253         cb->args[0] = idx;
 254
 255         return skb->len;
 256 }
 257
 258 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
 259 {
 260         struct sk_buff *msg;
 261         struct cfg80211_registered_device *dev;
 262
 263         dev = cfg80211_get_dev_from_info(info);
 264         if (IS_ERR(dev))
 265                 return PTR_ERR(dev);
 266
 267         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
 268         if (!msg)
 269                 goto out_err;
 270
 271         if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
 272                 goto out_free;
 273
 274         cfg80211_put_dev(dev);
 275
 276         return genlmsg_unicast(msg, info->snd_pid);
 277
 278  out_free:
 279         nlmsg_free(msg);
 280  out_err:
 281         cfg80211_put_dev(dev);
 282         return -ENOBUFS;
 283 }
 284
 285 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
 286 {
 287         struct cfg80211_registered_device *rdev;
 288         int result;
 289
 290         if (!info->attrs[NL80211_ATTR_WIPHY_NAME])
 291                 return -EINVAL;
 292
 293         rdev = cfg80211_get_dev_from_info(info);
 294         if (IS_ERR(rdev))
 295                 return PTR_ERR(rdev);
 296
 297         result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
 298
 299         cfg80211_put_dev(rdev);
 300         return result;
 301 }
 302
 303
 304 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 305                               struct net_device *dev)
 306 {
 307         void *hdr;
 308
 309         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
 310         if (!hdr)
 311                 return -1;
 312
 313         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
 314         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
 315         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
 316         return genlmsg_end(msg, hdr);
 317
 318  nla_put_failure:
 319         genlmsg_cancel(msg, hdr);
 320         return -EMSGSIZE;
 321 }
 322
 323 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
 324 {
 325         int wp_idx = 0;
 326         int if_idx = 0;
 327         int wp_start = cb->args[0];
 328         int if_start = cb->args[1];
 329         struct cfg80211_registered_device *dev;
 330         struct wireless_dev *wdev;
 331
 332         mutex_lock(&cfg80211_drv_mutex);
 333         list_for_each_entry(dev, &cfg80211_drv_list, list) {
 334                 if (wp_idx < wp_start) {
 335                         wp_idx++;
 336                         continue;
 337                 }
 338                 if_idx = 0;
 339
 340                 mutex_lock(&dev->devlist_mtx);
 341                 list_for_each_entry(wdev, &dev->netdev_list, list) {
 342                         if (if_idx < if_start) {
 343                                 if_idx++;
 344                                 continue;
 345                         }
 346                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
 347                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
 348                                                wdev->netdev) < 0) {
 349                                 mutex_unlock(&dev->devlist_mtx);
 350                                 goto out;
 351                         }
 352                         if_idx++;
 353                 }
 354                 mutex_unlock(&dev->devlist_mtx);
 355
 356                 wp_idx++;
 357         }
 358  out:
 359         mutex_unlock(&cfg80211_drv_mutex);
 360
 361         cb->args[0] = wp_idx;
 362         cb->args[1] = if_idx;
 363
 364         return skb->len;
 365 }
 366
 367 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
 368 {
 369         struct sk_buff *msg;
 370         struct cfg80211_registered_device *dev;
 371         struct net_device *netdev;
 372         int err;
 373
 374         err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
 375         if (err)
 376                 return err;
 377
 378         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
 379         if (!msg)
 380                 goto out_err;
 381
 382         if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0)
 383                 goto out_free;
 384
 385         dev_put(netdev);
 386         cfg80211_put_dev(dev);
 387
 388         return genlmsg_unicast(msg, info->snd_pid);
 389
 390  out_free:
 391         nlmsg_free(msg);
 392  out_err:
 393         dev_put(netdev);
 394         cfg80211_put_dev(dev);
 395         return -ENOBUFS;
 396 }
 397
 398 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
 399         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
 400         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
 401         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
 402         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
 403         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
 404 };
 405
 406 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
 407 {
 408         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
 409         int flag;
 410
 411         *mntrflags = 0;
 412
 413         if (!nla)
 414                 return -EINVAL;
 415
 416         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
 417                              nla, mntr_flags_policy))
 418                 return -EINVAL;
 419
 420         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
 421                 if (flags[flag])
 422                         *mntrflags |= (1<<flag);
 423
 424         return 0;
 425 }
 426
 427 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 428 {
 429         struct cfg80211_registered_device *drv;
 430         struct vif_params params;
 431         int err, ifindex;
 432         enum nl80211_iftype type;
 433         struct net_device *dev;
 434         u32 _flags, *flags = NULL;
 435
 436         memset(&params, 0, sizeof(params));
 437
 438         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 439         if (err)
 440                 return err;
 441         ifindex = dev->ifindex;
 442         type = dev->ieee80211_ptr->iftype;
 443         dev_put(dev);
 444
 445         err = -EINVAL;
 446         if (info->attrs[NL80211_ATTR_IFTYPE]) {
 447                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
 448                 if (type > NL80211_IFTYPE_MAX)
 449                         goto unlock;
 450         }
 451
 452         if (!drv->ops->change_virtual_intf ||
 453             !(drv->wiphy.interface_modes & (1 << type))) {
 454                 err = -EOPNOTSUPP;
 455                 goto unlock;
 456         }
 457
 458         if (info->attrs[NL80211_ATTR_MESH_ID]) {
 459                 if (type != NL80211_IFTYPE_MESH_POINT) {
 460                         err = -EINVAL;
 461                         goto unlock;
 462                 }
 463                 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
 464                 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
 465         }
 466
 467         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
 468                 if (type != NL80211_IFTYPE_MONITOR) {
 469                         err = -EINVAL;
 470                         goto unlock;
 471                 }
 472                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
 473                                           &_flags);
 474                 if (!err)
 475                         flags = &_flags;
 476         }
 477         rtnl_lock();
 478         err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
 479                                             type, flags, &params);
 480
 481         dev = __dev_get_by_index(&init_net, ifindex);
 482         WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));
 483
 484         rtnl_unlock();
 485
 486  unlock:
 487         cfg80211_put_dev(drv);
 488         return err;
 489 }
 490
 491 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 492 {
 493         struct cfg80211_registered_device *drv;
 494         struct vif_params params;
 495         int err;
 496         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
 497         u32 flags;
 498
 499         memset(&params, 0, sizeof(params));
 500
 501         if (!info->attrs[NL80211_ATTR_IFNAME])
 502                 return -EINVAL;
 503
 504         if (info->attrs[NL80211_ATTR_IFTYPE]) {
 505                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
 506                 if (type > NL80211_IFTYPE_MAX)
 507                         return -EINVAL;
 508         }
 509
 510         drv = cfg80211_get_dev_from_info(info);
 511         if (IS_ERR(drv))
 512                 return PTR_ERR(drv);
 513
 514         if (!drv->ops->add_virtual_intf ||
 515             !(drv->wiphy.interface_modes & (1 << type))) {
 516                 err = -EOPNOTSUPP;
 517                 goto unlock;
 518         }
 519
 520         if (type == NL80211_IFTYPE_MESH_POINT &&
 521             info->attrs[NL80211_ATTR_MESH_ID]) {
 522                 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
 523                 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
 524         }
 525
 526         rtnl_lock();
 527         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
 528                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
 529                                   &flags);
 530         err = drv->ops->add_virtual_intf(&drv->wiphy,
 531                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
 532                 type, err ? NULL : &flags, &params);
 533         rtnl_unlock();
 534
 535
 536  unlock:
 537         cfg80211_put_dev(drv);
 538         return err;
 539 }
 540
 541 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
 542 {
 543         struct cfg80211_registered_device *drv;
 544         int ifindex, err;
 545         struct net_device *dev;
 546
 547         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 548         if (err)
 549                 return err;
 550         ifindex = dev->ifindex;
 551         dev_put(dev);
 552
 553         if (!drv->ops->del_virtual_intf) {
 554                 err = -EOPNOTSUPP;
 555                 goto out;
 556         }
 557
 558         rtnl_lock();
 559         err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
 560         rtnl_unlock();
 561
 562  out:
 563         cfg80211_put_dev(drv);
 564         return err;
 565 }
 566
 567 struct get_key_cookie {
 568         struct sk_buff *msg;
 569         int error;
 570 };
 571
 572 static void get_key_callback(void *c, struct key_params *params)
 573 {
 574         struct get_key_cookie *cookie = c;
 575
 576         if (params->key)
 577                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
 578                         params->key_len, params->key);
 579
 580         if (params->seq)
 581                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
 582                         params->seq_len, params->seq);
 583
 584         if (params->cipher)
 585                 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
 586                             params->cipher);
 587
 588         return;
 589  nla_put_failure:
 590         cookie->error = 1;
 591 }
 592
 593 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 594 {
 595         struct cfg80211_registered_device *drv;
 596         int err;
 597         struct net_device *dev;
 598         u8 key_idx = 0;
 599         u8 *mac_addr = NULL;
 600         struct get_key_cookie cookie = {
 601                 .error = 0,
 602         };
 603         void *hdr;
 604         struct sk_buff *msg;
 605
 606         if (info->attrs[NL80211_ATTR_KEY_IDX])
 607                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 608
 609         if (key_idx > 3)
 610                 return -EINVAL;
 611
 612         if (info->attrs[NL80211_ATTR_MAC])
 613                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 614
 615         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 616         if (err)
 617                 return err;
 618
 619         if (!drv->ops->get_key) {
 620                 err = -EOPNOTSUPP;
 621                 goto out;
 622         }
 623
 624         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
 625         if (!msg) {
 626                 err = -ENOMEM;
 627                 goto out;
 628         }
 629
 630         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
 631                              NL80211_CMD_NEW_KEY);
 632
 633         if (IS_ERR(hdr)) {
 634                 err = PTR_ERR(hdr);
 635                 goto out;
 636         }
 637
 638         cookie.msg = msg;
 639
 640         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
 641         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
 642         if (mac_addr)
 643                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
 644
 645         rtnl_lock();
 646         err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
 647                                 &cookie, get_key_callback);
 648         rtnl_unlock();
 649
 650         if (err)
 651                 goto out;
 652
 653         if (cookie.error)
 654                 goto nla_put_failure;
 655
 656         genlmsg_end(msg, hdr);
 657         err = genlmsg_unicast(msg, info->snd_pid);
 658         goto out;
 659
 660  nla_put_failure:
 661         err = -ENOBUFS;
 662         nlmsg_free(msg);
 663  out:
 664         cfg80211_put_dev(drv);
 665         dev_put(dev);
 666         return err;
 667 }
 668
 669 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 670 {
 671         struct cfg80211_registered_device *drv;
 672         int err;
 673         struct net_device *dev;
 674         u8 key_idx;
 675
 676         if (!info->attrs[NL80211_ATTR_KEY_IDX])
 677                 return -EINVAL;
 678
 679         key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 680
 681         if (key_idx > 3)
 682                 return -EINVAL;
 683
 684         /* currently only support setting default key */
 685         if (!info->attrs[NL80211_ATTR_KEY_DEFAULT])
 686                 return -EINVAL;
 687
 688         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 689         if (err)
 690                 return err;
 691
 692         if (!drv->ops->set_default_key) {
 693                 err = -EOPNOTSUPP;
 694                 goto out;
 695         }
 696
 697         rtnl_lock();
 698         err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx);
 699         rtnl_unlock();
 700
 701  out:
 702         cfg80211_put_dev(drv);
 703         dev_put(dev);
 704         return err;
 705 }
 706
 707 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
 708 {
 709         struct cfg80211_registered_device *drv;
 710         int err;
 711         struct net_device *dev;
 712         struct key_params params;
 713         u8 key_idx = 0;
 714         u8 *mac_addr = NULL;
 715
 716         memset(&params, 0, sizeof(params));
 717
 718         if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
 719                 return -EINVAL;
 720
 721         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 722                 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 723                 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 724         }
 725
 726         if (info->attrs[NL80211_ATTR_KEY_IDX])
 727                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 728
 729         params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 730
 731         if (info->attrs[NL80211_ATTR_MAC])
 732                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 733
 734         if (key_idx > 3)
 735                 return -EINVAL;
 736
 737         /*
 738          * Disallow pairwise keys with non-zero index unless it's WEP
 739          * (because current deployments use pairwise WEP keys with
 740          * non-zero indizes but 802.11i clearly specifies to use zero)
 741          */
 742         if (mac_addr && key_idx &&
 743             params.cipher != WLAN_CIPHER_SUITE_WEP40 &&
 744             params.cipher != WLAN_CIPHER_SUITE_WEP104)
 745                 return -EINVAL;
 746
 747         /* TODO: add definitions for the lengths to linux/ieee80211.h */
 748         switch (params.cipher) {
 749         case WLAN_CIPHER_SUITE_WEP40:
 750                 if (params.key_len != 5)
 751                         return -EINVAL;
 752                 break;
 753         case WLAN_CIPHER_SUITE_TKIP:
 754                 if (params.key_len != 32)
 755                         return -EINVAL;
 756                 break;
 757         case WLAN_CIPHER_SUITE_CCMP:
 758                 if (params.key_len != 16)
 759                         return -EINVAL;
 760                 break;
 761         case WLAN_CIPHER_SUITE_WEP104:
 762                 if (params.key_len != 13)
 763                         return -EINVAL;
 764                 break;
 765         default:
 766                 return -EINVAL;
 767         }
 768
 769         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 770         if (err)
 771                 return err;
 772
 773         if (!drv->ops->add_key) {
 774                 err = -EOPNOTSUPP;
 775                 goto out;
 776         }
 777
 778         rtnl_lock();
 779         err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
 780         rtnl_unlock();
 781
 782  out:
 783         cfg80211_put_dev(drv);
 784         dev_put(dev);
 785         return err;
 786 }
 787
 788 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
 789 {
 790         struct cfg80211_registered_device *drv;
 791         int err;
 792         struct net_device *dev;
 793         u8 key_idx = 0;
 794         u8 *mac_addr = NULL;
 795
 796         if (info->attrs[NL80211_ATTR_KEY_IDX])
 797                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 798
 799         if (key_idx > 3)
 800                 return -EINVAL;
 801
 802         if (info->attrs[NL80211_ATTR_MAC])
 803                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 804
 805         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 806         if (err)
 807                 return err;
 808
 809         if (!drv->ops->del_key) {
 810                 err = -EOPNOTSUPP;
 811                 goto out;
 812         }
 813
 814         rtnl_lock();
 815         err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
 816         rtnl_unlock();
 817
 818  out:
 819         cfg80211_put_dev(drv);
 820         dev_put(dev);
 821         return err;
 822 }
 823
 824 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
 825 {
 826         int (*call)(struct wiphy *wiphy, struct net_device *dev,
 827                     struct beacon_parameters *info);
 828         struct cfg80211_registered_device *drv;
 829         int err;
 830         struct net_device *dev;
 831         struct beacon_parameters params;
 832         int haveinfo = 0;
 833
 834         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 835         if (err)
 836                 return err;
 837
 838         switch (info->genlhdr->cmd) {
 839         case NL80211_CMD_NEW_BEACON:
 840                 /* these are required for NEW_BEACON */
 841                 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
 842                     !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
 843                     !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
 844                         err = -EINVAL;
 845                         goto out;
 846                 }
 847
 848                 call = drv->ops->add_beacon;
 849                 break;
 850         case NL80211_CMD_SET_BEACON:
 851                 call = drv->ops->set_beacon;
 852                 break;
 853         default:
 854                 WARN_ON(1);
 855                 err = -EOPNOTSUPP;
 856                 goto out;
 857         }
 858
 859         if (!call) {
 860                 err = -EOPNOTSUPP;
 861                 goto out;
 862         }
 863
 864         memset(&params, 0, sizeof(params));
 865
 866         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
 867                 params.interval =
 868                     nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
 869                 haveinfo = 1;
 870         }
 871
 872         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
 873                 params.dtim_period =
 874                     nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
 875                 haveinfo = 1;
 876         }
 877
 878         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
 879                 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
 880                 params.head_len =
 881                     nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
 882                 haveinfo = 1;
 883         }
 884
 885         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
 886                 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
 887                 params.tail_len =
 888                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
 889                 haveinfo = 1;
 890         }
 891
 892         if (!haveinfo) {
 893                 err = -EINVAL;
 894                 goto out;
 895         }
 896
 897         rtnl_lock();
 898         err = call(&drv->wiphy, dev, &params);
 899         rtnl_unlock();
 900
 901  out:
 902         cfg80211_put_dev(drv);
 903         dev_put(dev);
 904         return err;
 905 }
 906
 907 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
 908 {
 909         struct cfg80211_registered_device *drv;
 910         int err;
 911         struct net_device *dev;
 912
 913         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 914         if (err)
 915                 return err;
 916
 917         if (!drv->ops->del_beacon) {
 918                 err = -EOPNOTSUPP;
 919                 goto out;
 920         }
 921
 922         rtnl_lock();
 923         err = drv->ops->del_beacon(&drv->wiphy, dev);
 924         rtnl_unlock();
 925
 926  out:
 927         cfg80211_put_dev(drv);
 928         dev_put(dev);
 929         return err;
 930 }
 931
 932 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
 933         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
 934         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
 935         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
 936 };
 937
 938 static int parse_station_flags(struct nlattr *nla, u32 *staflags)
 939 {
 940         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
 941         int flag;
 942
 943         *staflags = 0;
 944
 945         if (!nla)
 946                 return 0;
 947
 948         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
 949                              nla, sta_flags_policy))
 950                 return -EINVAL;
 951
 952         *staflags = STATION_FLAG_CHANGED;
 953
 954         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
 955                 if (flags[flag])
 956                         *staflags |= (1<<flag);
 957
 958         return 0;
 959 }
 960
 961 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
 962                                 int flags, struct net_device *dev,
 963                                 u8 *mac_addr, struct station_info *sinfo)
 964 {
 965         void *hdr;
 966         struct nlattr *sinfoattr;
 967
 968         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
 969         if (!hdr)
 970                 return -1;
 971
 972         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
 973         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
 974
 975         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
 976         if (!sinfoattr)
 977                 goto nla_put_failure;
 978         if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
 979                 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
 980                             sinfo->inactive_time);
 981         if (sinfo->filled & STATION_INFO_RX_BYTES)
 982                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
 983                             sinfo->rx_bytes);
 984         if (sinfo->filled & STATION_INFO_TX_BYTES)
 985                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
 986                             sinfo->tx_bytes);
 987         if (sinfo->filled & STATION_INFO_LLID)
 988                 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
 989                             sinfo->llid);
 990         if (sinfo->filled & STATION_INFO_PLID)
 991                 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
 992                             sinfo->plid);
 993         if (sinfo->filled & STATION_INFO_PLINK_STATE)
 994                 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
 995                             sinfo->plink_state);
 996
 997         nla_nest_end(msg, sinfoattr);
 998
 999         return genlmsg_end(msg, hdr);
1000
1001  nla_put_failure:
1002         genlmsg_cancel(msg, hdr);
1003         return -EMSGSIZE;
1004 }
1005
1006 static int nl80211_dump_station(struct sk_buff *skb,
1007                                 struct netlink_callback *cb)
1008 {
1009         struct station_info sinfo;
1010         struct cfg80211_registered_device *dev;
1011         struct net_device *netdev;
1012         u8 mac_addr[ETH_ALEN];
1013         int ifidx = cb->args[0];
1014         int sta_idx = cb->args[1];
1015         int err;
1016
1017         if (!ifidx) {
1018                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1019                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
1020                                   nl80211_policy);
1021                 if (err)
1022                         return err;
1023
1024                 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1025                         return -EINVAL;
1026
1027                 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1028                 if (!ifidx)
1029                         return -EINVAL;
1030         }
1031
1032         netdev = dev_get_by_index(&init_net, ifidx);
1033         if (!netdev)
1034                 return -ENODEV;
1035
1036         dev = cfg80211_get_dev_from_ifindex(ifidx);
1037         if (IS_ERR(dev)) {
1038                 err = PTR_ERR(dev);
1039                 goto out_put_netdev;
1040         }
1041
1042         if (!dev->ops->dump_station) {
1043                 err = -ENOSYS;
1044                 goto out_err;
1045         }
1046
1047         rtnl_lock();
1048
1049         while (1) {
1050                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1051                                              mac_addr, &sinfo);
1052                 if (err == -ENOENT)
1053                         break;
1054                 if (err)
1055                         goto out_err_rtnl;
1056
1057                 if (nl80211_send_station(skb,
1058                                 NETLINK_CB(cb->skb).pid,
1059                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1060                                 netdev, mac_addr,
1061                                 &sinfo) < 0)
1062                         goto out;
1063
1064                 sta_idx++;
1065         }
1066
1067
1068  out:
1069         cb->args[1] = sta_idx;
1070         err = skb->len;
1071  out_err_rtnl:
1072         rtnl_unlock();
1073  out_err:
1074         cfg80211_put_dev(dev);
1075  out_put_netdev:
1076         dev_put(netdev);
1077
1078         return err;
1079 }
1080
1081 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1082 {
1083         struct cfg80211_registered_device *drv;
1084         int err;
1085         struct net_device *dev;
1086         struct station_info sinfo;
1087         struct sk_buff *msg;
1088         u8 *mac_addr = NULL;
1089
1090         memset(&sinfo, 0, sizeof(sinfo));
1091
1092         if (!info->attrs[NL80211_ATTR_MAC])
1093                 return -EINVAL;
1094
1095         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1096
1097         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1098         if (err)
1099                 return err;
1100
1101         if (!drv->ops->get_station) {
1102                 err = -EOPNOTSUPP;
1103                 goto out;
1104         }
1105
1106         rtnl_lock();
1107         err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1108         rtnl_unlock();
1109
1110         if (err)
1111                 goto out;
1112
1113         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1114         if (!msg)
1115                 goto out;
1116
1117         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1118                                  dev, mac_addr, &sinfo) < 0)
1119                 goto out_free;
1120
1121         err = genlmsg_unicast(msg, info->snd_pid);
1122         goto out;
1123
1124  out_free:
1125         nlmsg_free(msg);
1126
1127  out:
1128         cfg80211_put_dev(drv);
1129         dev_put(dev);
1130         return err;
1131 }
1132
1133 /*
1134  * Get vlan interface making sure it is on the right wiphy.
1135  */
1136 static int get_vlan(struct nlattr *vlanattr,
1137                     struct cfg80211_registered_device *rdev,
1138                     struct net_device **vlan)
1139 {
1140         *vlan = NULL;
1141
1142         if (vlanattr) {
1143                 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1144                 if (!*vlan)
1145                         return -ENODEV;
1146                 if (!(*vlan)->ieee80211_ptr)
1147                         return -EINVAL;
1148                 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1149                         return -EINVAL;
1150         }
1151         return 0;
1152 }
1153
1154 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1155 {
1156         struct cfg80211_registered_device *drv;
1157         int err;
1158         struct net_device *dev;
1159         struct station_parameters params;
1160         u8 *mac_addr = NULL;
1161
1162         memset(&params, 0, sizeof(params));
1163
1164         params.listen_interval = -1;
1165
1166         if (info->attrs[NL80211_ATTR_STA_AID])
1167                 return -EINVAL;
1168
1169         if (!info->attrs[NL80211_ATTR_MAC])
1170                 return -EINVAL;
1171
1172         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1173
1174         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1175                 params.supported_rates =
1176                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1177                 params.supported_rates_len =
1178                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1179         }
1180
1181         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1182                 params.listen_interval =
1183                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1184
1185         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1186                 params.ht_capa =
1187                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1188
1189         if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
1190                                 &params.station_flags))
1191                 return -EINVAL;
1192
1193         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1194                 params.plink_action =
1195                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1196
1197         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1198         if (err)
1199                 return err;
1200
1201         err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1202         if (err)
1203                 goto out;
1204
1205         if (!drv->ops->change_station) {
1206                 err = -EOPNOTSUPP;
1207                 goto out;
1208         }
1209
1210         rtnl_lock();
1211         err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
1212         rtnl_unlock();
1213
1214  out:
1215         if (params.vlan)
1216                 dev_put(params.vlan);
1217         cfg80211_put_dev(drv);
1218         dev_put(dev);
1219         return err;
1220 }
1221
1222 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1223 {
1224         struct cfg80211_registered_device *drv;
1225         int err;
1226         struct net_device *dev;
1227         struct station_parameters params;
1228         u8 *mac_addr = NULL;
1229
1230         memset(&params, 0, sizeof(params));
1231
1232         if (!info->attrs[NL80211_ATTR_MAC])
1233                 return -EINVAL;
1234
1235         if (!info->attrs[NL80211_ATTR_STA_AID])
1236                 return -EINVAL;
1237
1238         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1239                 return -EINVAL;
1240
1241         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1242                 return -EINVAL;
1243
1244         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1245         params.supported_rates =
1246                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1247         params.supported_rates_len =
1248                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1249         params.listen_interval =
1250                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1251         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1252         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1253                 params.ht_capa =
1254                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1255
1256         if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
1257                                 &params.station_flags))
1258                 return -EINVAL;
1259
1260         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1261         if (err)
1262                 return err;
1263
1264         err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1265         if (err)
1266                 goto out;
1267
1268         if (!drv->ops->add_station) {
1269                 err = -EOPNOTSUPP;
1270                 goto out;
1271         }
1272
1273         rtnl_lock();
1274         err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
1275         rtnl_unlock();
1276
1277  out:
1278         if (params.vlan)
1279                 dev_put(params.vlan);
1280         cfg80211_put_dev(drv);
1281         dev_put(dev);
1282         return err;
1283 }
1284
1285 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1286 {
1287         struct cfg80211_registered_device *drv;
1288         int err;
1289         struct net_device *dev;
1290         u8 *mac_addr = NULL;
1291
1292         if (info->attrs[NL80211_ATTR_MAC])
1293                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1294
1295         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1296         if (err)
1297                 return err;
1298
1299         if (!drv->ops->del_station) {
1300                 err = -EOPNOTSUPP;
1301                 goto out;
1302         }
1303
1304         rtnl_lock();
1305         err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1306         rtnl_unlock();
1307
1308  out:
1309         cfg80211_put_dev(drv);
1310         dev_put(dev);
1311         return err;
1312 }
1313
1314 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1315                                 int flags, struct net_device *dev,
1316                                 u8 *dst, u8 *next_hop,
1317                                 struct mpath_info *pinfo)
1318 {
1319         void *hdr;
1320         struct nlattr *pinfoattr;
1321
1322         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1323         if (!hdr)
1324                 return -1;
1325
1326         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1327         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1328         NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1329
1330         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1331         if (!pinfoattr)
1332                 goto nla_put_failure;
1333         if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1334                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1335                             pinfo->frame_qlen);
1336         if (pinfo->filled & MPATH_INFO_DSN)
1337                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1338                             pinfo->dsn);
1339         if (pinfo->filled & MPATH_INFO_METRIC)
1340                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1341                             pinfo->metric);
1342         if (pinfo->filled & MPATH_INFO_EXPTIME)
1343                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1344                             pinfo->exptime);
1345         if (pinfo->filled & MPATH_INFO_FLAGS)
1346                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1347                             pinfo->flags);
1348         if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1349                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1350                             pinfo->discovery_timeout);
1351         if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1352                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1353                             pinfo->discovery_retries);
1354
1355         nla_nest_end(msg, pinfoattr);
1356
1357         return genlmsg_end(msg, hdr);
1358
1359  nla_put_failure:
1360         genlmsg_cancel(msg, hdr);
1361         return -EMSGSIZE;
1362 }
1363
1364 static int nl80211_dump_mpath(struct sk_buff *skb,
1365                               struct netlink_callback *cb)
1366 {
1367         struct mpath_info pinfo;
1368         struct cfg80211_registered_device *dev;
1369         struct net_device *netdev;
1370         u8 dst[ETH_ALEN];
1371         u8 next_hop[ETH_ALEN];
1372         int ifidx = cb->args[0];
1373         int path_idx = cb->args[1];
1374         int err;
1375
1376         if (!ifidx) {
1377                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1378                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
1379                                   nl80211_policy);
1380                 if (err)
1381                         return err;
1382
1383                 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1384                         return -EINVAL;
1385
1386                 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1387                 if (!ifidx)
1388                         return -EINVAL;
1389         }
1390
1391         netdev = dev_get_by_index(&init_net, ifidx);
1392         if (!netdev)
1393                 return -ENODEV;
1394
1395         dev = cfg80211_get_dev_from_ifindex(ifidx);
1396         if (IS_ERR(dev)) {
1397                 err = PTR_ERR(dev);
1398                 goto out_put_netdev;
1399         }
1400
1401         if (!dev->ops->dump_mpath) {
1402                 err = -ENOSYS;
1403                 goto out_err;
1404         }
1405
1406         rtnl_lock();
1407
1408         while (1) {
1409                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
1410                                            dst, next_hop, &pinfo);
1411                 if (err == -ENOENT)
1412                         break;
1413                 if (err)
1414                         goto out_err_rtnl;
1415
1416                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
1417                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
1418                                        netdev, dst, next_hop,
1419                                        &pinfo) < 0)
1420                         goto out;
1421
1422                 path_idx++;
1423         }
1424
1425
1426  out:
1427         cb->args[1] = path_idx;
1428         err = skb->len;
1429  out_err_rtnl:
1430         rtnl_unlock();
1431  out_err:
1432         cfg80211_put_dev(dev);
1433  out_put_netdev:
1434         dev_put(netdev);
1435
1436         return err;
1437 }
1438
1439 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
1440 {
1441         struct cfg80211_registered_device *drv;
1442         int err;
1443         struct net_device *dev;
1444         struct mpath_info pinfo;
1445         struct sk_buff *msg;
1446         u8 *dst = NULL;
1447         u8 next_hop[ETH_ALEN];
1448
1449         memset(&pinfo, 0, sizeof(pinfo));
1450
1451         if (!info->attrs[NL80211_ATTR_MAC])
1452                 return -EINVAL;
1453
1454         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1455
1456         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1457         if (err)
1458                 return err;
1459
1460         if (!drv->ops->get_mpath) {
1461                 err = -EOPNOTSUPP;
1462                 goto out;
1463         }
1464
1465         rtnl_lock();
1466         err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
1467         rtnl_unlock();
1468
1469         if (err)
1470                 goto out;
1471
1472         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1473         if (!msg)
1474                 goto out;
1475
1476         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
1477                                  dev, dst, next_hop, &pinfo) < 0)
1478                 goto out_free;
1479
1480         err = genlmsg_unicast(msg, info->snd_pid);
1481         goto out;
1482
1483  out_free:
1484         nlmsg_free(msg);
1485
1486  out:
1487         cfg80211_put_dev(drv);
1488         dev_put(dev);
1489         return err;
1490 }
1491
1492 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
1493 {
1494         struct cfg80211_registered_device *drv;
1495         int err;
1496         struct net_device *dev;
1497         u8 *dst = NULL;
1498         u8 *next_hop = NULL;
1499
1500         if (!info->attrs[NL80211_ATTR_MAC])
1501                 return -EINVAL;
1502
1503         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
1504                 return -EINVAL;
1505
1506         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1507         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
1508
1509         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1510         if (err)
1511                 return err;
1512
1513         if (!drv->ops->change_mpath) {
1514                 err = -EOPNOTSUPP;
1515                 goto out;
1516         }
1517
1518         rtnl_lock();
1519         err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
1520         rtnl_unlock();
1521
1522  out:
1523         cfg80211_put_dev(drv);
1524         dev_put(dev);
1525         return err;
1526 }
1527 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
1528 {
1529         struct cfg80211_registered_device *drv;
1530         int err;
1531         struct net_device *dev;
1532         u8 *dst = NULL;
1533         u8 *next_hop = NULL;
1534
1535         if (!info->attrs[NL80211_ATTR_MAC])
1536                 return -EINVAL;
1537
1538         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
1539                 return -EINVAL;
1540
1541         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1542         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
1543
1544         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1545         if (err)
1546                 return err;
1547
1548         if (!drv->ops->add_mpath) {
1549                 err = -EOPNOTSUPP;
1550                 goto out;
1551         }
1552
1553         rtnl_lock();
1554         err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
1555         rtnl_unlock();
1556
1557  out:
1558         cfg80211_put_dev(drv);
1559         dev_put(dev);
1560         return err;
1561 }
1562
1563 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
1564 {
1565         struct cfg80211_registered_device *drv;
1566         int err;
1567         struct net_device *dev;
1568         u8 *dst = NULL;
1569
1570         if (info->attrs[NL80211_ATTR_MAC])
1571                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1572
1573         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1574         if (err)
1575                 return err;
1576
1577         if (!drv->ops->del_mpath) {
1578                 err = -EOPNOTSUPP;
1579                 goto out;
1580         }
1581
1582         rtnl_lock();
1583         err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
1584         rtnl_unlock();
1585
1586  out:
1587         cfg80211_put_dev(drv);
1588         dev_put(dev);
1589         return err;
1590 }
1591
1592 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
1593 {
1594         struct cfg80211_registered_device *drv;
1595         int err;
1596         struct net_device *dev;
1597         struct bss_parameters params;
1598
1599         memset(&params, 0, sizeof(params));
1600         /* default to not changing parameters */
1601         params.use_cts_prot = -1;
1602         params.use_short_preamble = -1;
1603         params.use_short_slot_time = -1;
1604
1605         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
1606                 params.use_cts_prot =
1607                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
1608         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
1609                 params.use_short_preamble =
1610                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
1611         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
1612                 params.use_short_slot_time =
1613                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
1614
1615         err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1616         if (err)
1617                 return err;
1618
1619         if (!drv->ops->change_bss) {
1620                 err = -EOPNOTSUPP;
1621                 goto out;
1622         }
1623
1624         rtnl_lock();
1625         err = drv->ops->change_bss(&drv->wiphy, dev, &params);
1626         rtnl_unlock();
1627
1628  out:
1629         cfg80211_put_dev(drv);
1630         dev_put(dev);
1631         return err;
1632 }
1633
1634 static const struct nla_policy
1635         reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
1636         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
1637         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
1638         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
1639         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
1640         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
1641         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
1642 };
1643
1644 static int parse_reg_rule(struct nlattr *tb[],
1645         struct ieee80211_reg_rule *reg_rule)
1646 {
1647         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
1648         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
1649
1650         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
1651                 return -EINVAL;
1652         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
1653                 return -EINVAL;
1654         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
1655                 return -EINVAL;
1656         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1657                 return -EINVAL;
1658         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1659                 return -EINVAL;
1660
1661         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
1662
1663         freq_range->start_freq_khz =
1664                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
1665         freq_range->end_freq_khz =
1666                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
1667         freq_range->max_bandwidth_khz =
1668                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
1669
1670         power_rule->max_eirp =
1671                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
1672
1673         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
1674                 power_rule->max_antenna_gain =
1675                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
1676
1677         return 0;
1678 }
1679
1680 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
1681 {
1682         int r;
1683         char *data = NULL;
1684
1685         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
1686                 return -EINVAL;
1687
1688         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
1689
1690 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
1691         /* We ignore world regdom requests with the old regdom setup */
1692         if (is_world_regdom(data))
1693                 return -EINVAL;
1694 #endif
1695         mutex_lock(&cfg80211_drv_mutex);
1696         r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, NULL);
1697         mutex_unlock(&cfg80211_drv_mutex);
1698         return r;
1699 }
1700
1701 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
1702 {
1703         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
1704         struct nlattr *nl_reg_rule;
1705         char *alpha2 = NULL;
1706         int rem_reg_rules = 0, r = 0;
1707         u32 num_rules = 0, rule_idx = 0, size_of_regd;
1708         struct ieee80211_regdomain *rd = NULL;
1709
1710         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
1711                 return -EINVAL;
1712
1713         if (!info->attrs[NL80211_ATTR_REG_RULES])
1714                 return -EINVAL;
1715
1716         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
1717
1718         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
1719                         rem_reg_rules) {
1720                 num_rules++;
1721                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
1722                         goto bad_reg;
1723         }
1724
1725         if (!reg_is_valid_request(alpha2))
1726                 return -EINVAL;
1727
1728         size_of_regd = sizeof(struct ieee80211_regdomain) +
1729                 (num_rules * sizeof(struct ieee80211_reg_rule));
1730
1731         rd = kzalloc(size_of_regd, GFP_KERNEL);
1732         if (!rd)
1733                 return -ENOMEM;
1734
1735         rd->n_reg_rules = num_rules;
1736         rd->alpha2[0] = alpha2[0];
1737         rd->alpha2[1] = alpha2[1];
1738
1739         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
1740                         rem_reg_rules) {
1741                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
1742                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
1743                         reg_rule_policy);
1744                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
1745                 if (r)
1746                         goto bad_reg;
1747
1748                 rule_idx++;
1749
1750                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES)
1751                         goto bad_reg;
1752         }
1753
1754         BUG_ON(rule_idx != num_rules);
1755
1756         mutex_lock(&cfg80211_drv_mutex);
1757         r = set_regdom(rd);
1758         mutex_unlock(&cfg80211_drv_mutex);
1759         if (r)
1760                 goto bad_reg;
1761
1762         return r;
1763
1764 bad_reg:
1765         kfree(rd);
1766         return -EINVAL;
1767 }
1768
1769 static struct genl_ops nl80211_ops[] = {
1770         {
1771                 .cmd = NL80211_CMD_GET_WIPHY,
1772                 .doit = nl80211_get_wiphy,
1773                 .dumpit = nl80211_dump_wiphy,
1774                 .policy = nl80211_policy,
1775                 /* can be retrieved by unprivileged users */
1776         },
1777         {
1778                 .cmd = NL80211_CMD_SET_WIPHY,
1779                 .doit = nl80211_set_wiphy,
1780                 .policy = nl80211_policy,
1781                 .flags = GENL_ADMIN_PERM,
1782         },
1783         {
1784                 .cmd = NL80211_CMD_GET_INTERFACE,
1785                 .doit = nl80211_get_interface,
1786                 .dumpit = nl80211_dump_interface,
1787                 .policy = nl80211_policy,
1788                 /* can be retrieved by unprivileged users */
1789         },
1790         {
1791                 .cmd = NL80211_CMD_SET_INTERFACE,
1792                 .doit = nl80211_set_interface,
1793                 .policy = nl80211_policy,
1794                 .flags = GENL_ADMIN_PERM,
1795         },
1796         {
1797                 .cmd = NL80211_CMD_NEW_INTERFACE,
1798                 .doit = nl80211_new_interface,
1799                 .policy = nl80211_policy,
1800                 .flags = GENL_ADMIN_PERM,
1801         },
1802         {
1803                 .cmd = NL80211_CMD_DEL_INTERFACE,
1804                 .doit = nl80211_del_interface,
1805                 .policy = nl80211_policy,
1806                 .flags = GENL_ADMIN_PERM,
1807         },
1808         {
1809                 .cmd = NL80211_CMD_GET_KEY,
1810                 .doit = nl80211_get_key,
1811                 .policy = nl80211_policy,
1812                 .flags = GENL_ADMIN_PERM,
1813         },
1814         {
1815                 .cmd = NL80211_CMD_SET_KEY,
1816                 .doit = nl80211_set_key,
1817                 .policy = nl80211_policy,
1818                 .flags = GENL_ADMIN_PERM,
1819         },
1820         {
1821                 .cmd = NL80211_CMD_NEW_KEY,
1822                 .doit = nl80211_new_key,
1823                 .policy = nl80211_policy,
1824                 .flags = GENL_ADMIN_PERM,
1825         },
1826         {
1827                 .cmd = NL80211_CMD_DEL_KEY,
1828                 .doit = nl80211_del_key,
1829                 .policy = nl80211_policy,
1830                 .flags = GENL_ADMIN_PERM,
1831         },
1832         {
1833                 .cmd = NL80211_CMD_SET_BEACON,
1834                 .policy = nl80211_policy,
1835                 .flags = GENL_ADMIN_PERM,
1836                 .doit = nl80211_addset_beacon,
1837         },
1838         {
1839                 .cmd = NL80211_CMD_NEW_BEACON,
1840                 .policy = nl80211_policy,
1841                 .flags = GENL_ADMIN_PERM,
1842                 .doit = nl80211_addset_beacon,
1843         },
1844         {
1845                 .cmd = NL80211_CMD_DEL_BEACON,
1846                 .policy = nl80211_policy,
1847                 .flags = GENL_ADMIN_PERM,
1848                 .doit = nl80211_del_beacon,
1849         },
1850         {
1851                 .cmd = NL80211_CMD_GET_STATION,
1852                 .doit = nl80211_get_station,
1853                 .dumpit = nl80211_dump_station,
1854                 .policy = nl80211_policy,
1855                 .flags = GENL_ADMIN_PERM,
1856         },
1857         {
1858                 .cmd = NL80211_CMD_SET_STATION,
1859                 .doit = nl80211_set_station,
1860                 .policy = nl80211_policy,
1861                 .flags = GENL_ADMIN_PERM,
1862         },
1863         {
1864                 .cmd = NL80211_CMD_NEW_STATION,
1865                 .doit = nl80211_new_station,
1866                 .policy = nl80211_policy,
1867                 .flags = GENL_ADMIN_PERM,
1868         },
1869         {
1870                 .cmd = NL80211_CMD_DEL_STATION,
1871                 .doit = nl80211_del_station,
1872                 .policy = nl80211_policy,
1873                 .flags = GENL_ADMIN_PERM,
1874         },
1875         {
1876                 .cmd = NL80211_CMD_GET_MPATH,
1877                 .doit = nl80211_get_mpath,
1878                 .dumpit = nl80211_dump_mpath,
1879                 .policy = nl80211_policy,
1880                 .flags = GENL_ADMIN_PERM,
1881         },
1882         {
1883                 .cmd = NL80211_CMD_SET_MPATH,
1884                 .doit = nl80211_set_mpath,
1885                 .policy = nl80211_policy,
1886                 .flags = GENL_ADMIN_PERM,
1887         },
1888         {
1889                 .cmd = NL80211_CMD_NEW_MPATH,
1890                 .doit = nl80211_new_mpath,
1891                 .policy = nl80211_policy,
1892                 .flags = GENL_ADMIN_PERM,
1893         },
1894         {
1895                 .cmd = NL80211_CMD_DEL_MPATH,
1896                 .doit = nl80211_del_mpath,
1897                 .policy = nl80211_policy,
1898                 .flags = GENL_ADMIN_PERM,
1899         },
1900         {
1901                 .cmd = NL80211_CMD_SET_BSS,
1902                 .doit = nl80211_set_bss,
1903                 .policy = nl80211_policy,
1904                 .flags = GENL_ADMIN_PERM,
1905         },
1906         {
1907                 .cmd = NL80211_CMD_SET_REG,
1908                 .doit = nl80211_set_reg,
1909                 .policy = nl80211_policy,
1910                 .flags = GENL_ADMIN_PERM,
1911         },
1912         {
1913                 .cmd = NL80211_CMD_REQ_SET_REG,
1914                 .doit = nl80211_req_set_reg,
1915                 .policy = nl80211_policy,
1916                 .flags = GENL_ADMIN_PERM,
1917         },
1918 };
1919
1920 /* multicast groups */
1921 static struct genl_multicast_group nl80211_config_mcgrp = {
1922         .name = "config",
1923 };
1924
1925 /* notification functions */
1926
1927 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
1928 {
1929         struct sk_buff *msg;
1930
1931         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1932         if (!msg)
1933                 return;
1934
1935         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
1936                 nlmsg_free(msg);
1937                 return;
1938         }
1939
1940         genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
1941 }
1942
1943 /* initialisation/exit functions */
1944
1945 int nl80211_init(void)
1946 {
1947         int err, i;
1948
1949         err = genl_register_family(&nl80211_fam);
1950         if (err)
1951                 return err;
1952
1953         for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) {
1954                 err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]);
1955                 if (err)
1956                         goto err_out;
1957         }
1958
1959         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
1960         if (err)
1961                 goto err_out;
1962
1963         return 0;
1964  err_out:
1965         genl_unregister_family(&nl80211_fam);
1966         return err;
1967 }
1968
1969 void nl80211_exit(void)
1970 {
1971         genl_unregister_family(&nl80211_fam);
1972 }