net/mac80211/wext.c

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005-2006, Devicescape Software, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/netdevice.h>
  13 #include <linux/types.h>
  14 #include <linux/slab.h>
  15 #include <linux/skbuff.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/if_arp.h>
  18 #include <linux/wireless.h>
  19 #include <net/iw_handler.h>
  20 #include <asm/uaccess.h>
  21
  22 #include <net/mac80211.h>
  23 #include "ieee80211_i.h"
  24 #include "led.h"
  25 #include "rate.h"
  26 #include "wpa.h"
  27 #include "aes_ccm.h"
  28
  29
  30 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
  31                                     struct iw_request_info *info,
  32                                     struct iw_point *data, char *extra)
  33 {
  34         struct ieee80211_sub_if_data *sdata;
  35
  36         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  37
  38         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
  39                 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
  40                 if (ret && ret != -EALREADY)
  41                         return ret;
  42                 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
  43                 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
  44                 sdata->u.mgd.flags &= ~IEEE80211_STA_CONTROL_PORT;
  45                 if (ret != -EALREADY)
  46                         ieee80211_sta_req_auth(sdata);
  47                 return 0;
  48         }
  49
  50         return -EOPNOTSUPP;
  51 }
  52
  53 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
  54                                    struct iw_request_info *info,
  55                                    struct iw_freq *freq, char *extra)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58
  59         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
  60                 return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
  61         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
  62                 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
  63
  64         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
  65         if (freq->e == 0) {
  66                 if (freq->m < 0) {
  67                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
  68                                 sdata->u.mgd.flags |=
  69                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
  70                         return 0;
  71                 } else
  72                         return ieee80211_set_freq(sdata,
  73                                 ieee80211_channel_to_frequency(freq->m));
  74         } else {
  75                 int i, div = 1000000;
  76                 for (i = 0; i < freq->e; i++)
  77                         div /= 10;
  78                 if (div > 0)
  79                         return ieee80211_set_freq(sdata, freq->m / div);
  80                 else
  81                         return -EINVAL;
  82         }
  83 }
  84
  85
  86 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
  87                                    struct iw_request_info *info,
  88                                    struct iw_freq *freq, char *extra)
  89 {
  90         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
  91         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  92
  93         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
  94                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
  95
  96         freq->m = local->oper_channel->center_freq;
  97         freq->e = 6;
  98
  99         return 0;
 100 }
 101
 102
 103 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 104                                     struct iw_request_info *info,
 105                                     struct iw_point *data, char *ssid)
 106 {
 107         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 108         size_t len = data->length;
 109         int ret;
 110
 111         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 112                 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
 113
 114         /* iwconfig uses nul termination in SSID.. */
 115         if (len > 0 && ssid[len - 1] == '\0')
 116                 len--;
 117
 118         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 119                 if (data->flags)
 120                         sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 121                 else
 122                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 123
 124                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
 125                 if (ret)
 126                         return ret;
 127
 128                 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
 129                 sdata->u.mgd.flags &= ~IEEE80211_STA_CONTROL_PORT;
 130                 ieee80211_sta_req_auth(sdata);
 131                 return 0;
 132         }
 133
 134         return -EOPNOTSUPP;
 135 }
 136
 137
 138 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 139                                     struct iw_request_info *info,
 140                                     struct iw_point *data, char *ssid)
 141 {
 142         size_t len;
 143         struct ieee80211_sub_if_data *sdata;
 144
 145         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 146
 147         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 148                 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
 149
 150         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 151                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
 152                 if (res == 0) {
 153                         data->length = len;
 154                         data->flags = 1;
 155                 } else
 156                         data->flags = 0;
 157                 return res;
 158         }
 159
 160         return -EOPNOTSUPP;
 161 }
 162
 163
 164 static int ieee80211_ioctl_siwap(struct net_device *dev,
 165                                  struct iw_request_info *info,
 166                                  struct sockaddr *ap_addr, char *extra)
 167 {
 168         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 169
 170         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 171                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
 172
 173         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 174                 int ret;
 175
 176                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 177                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 178                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 179                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 180                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 181                 else
 182                         sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 183                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 184                 if (ret)
 185                         return ret;
 186                 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
 187                 sdata->u.mgd.flags &= ~IEEE80211_STA_CONTROL_PORT;
 188                 ieee80211_sta_req_auth(sdata);
 189                 return 0;
 190         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 191                 /*
 192                  * If it is necessary to update the WDS peer address
 193                  * while the interface is running, then we need to do
 194                  * more work here, namely if it is running we need to
 195                  * add a new and remove the old STA entry, this is
 196                  * normally handled by _open() and _stop().
 197                  */
 198                 if (netif_running(dev))
 199                         return -EBUSY;
 200
 201                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 202                        ETH_ALEN);
 203
 204                 return 0;
 205         }
 206
 207         return -EOPNOTSUPP;
 208 }
 209
 210
 211 static int ieee80211_ioctl_giwap(struct net_device *dev,
 212                                  struct iw_request_info *info,
 213                                  struct sockaddr *ap_addr, char *extra)
 214 {
 215         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 216
 217         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 218                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
 219
 220         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 221                 if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
 222                         ap_addr->sa_family = ARPHRD_ETHER;
 223                         memcpy(&ap_addr->sa_data, sdata->u.mgd.bssid, ETH_ALEN);
 224                 } else
 225                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 226                 return 0;
 227         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 228                 ap_addr->sa_family = ARPHRD_ETHER;
 229                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 230                 return 0;
 231         }
 232
 233         return -EOPNOTSUPP;
 234 }
 235
 236
 237 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 238                                   struct iw_request_info *info,
 239                                   struct iw_param *rate, char *extra)
 240 {
 241         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 242         int i, err = -EINVAL;
 243         u32 target_rate = rate->value / 100000;
 244         struct ieee80211_sub_if_data *sdata;
 245         struct ieee80211_supported_band *sband;
 246
 247         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 248
 249         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 250
 251         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 252          * target_rate = X, rate->fixed = 1 means only rate X
 253          * target_rate = X, rate->fixed = 0 means all rates <= X */
 254         sdata->max_ratectrl_rateidx = -1;
 255         sdata->force_unicast_rateidx = -1;
 256         if (rate->value < 0)
 257                 return 0;
 258
 259         for (i=0; i< sband->n_bitrates; i++) {
 260                 struct ieee80211_rate *brate = &sband->bitrates[i];
 261                 int this_rate = brate->bitrate;
 262
 263                 if (target_rate == this_rate) {
 264                         sdata->max_ratectrl_rateidx = i;
 265                         if (rate->fixed)
 266                                 sdata->force_unicast_rateidx = i;
 267                         err = 0;
 268                         break;
 269                 }
 270         }
 271         return err;
 272 }
 273
 274 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 275                                   struct iw_request_info *info,
 276                                   struct iw_param *rate, char *extra)
 277 {
 278         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 279         struct sta_info *sta;
 280         struct ieee80211_sub_if_data *sdata;
 281         struct ieee80211_supported_band *sband;
 282
 283         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 284
 285         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 286                 return -EOPNOTSUPP;
 287
 288         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 289
 290         rcu_read_lock();
 291
 292         sta = sta_info_get(local, sdata->u.mgd.bssid);
 293
 294         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
 295                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
 296         else
 297                 rate->value = 0;
 298
 299         rcu_read_unlock();
 300
 301         if (!sta)
 302                 return -ENODEV;
 303
 304         rate->value *= 100000;
 305
 306         return 0;
 307 }
 308
 309 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 310                                       struct iw_request_info *info,
 311                                       union iwreq_data *data, char *extra)
 312 {
 313         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 314         struct ieee80211_channel* chan = local->hw.conf.channel;
 315         bool reconf = false;
 316         u32 reconf_flags = 0;
 317         int new_power_level;
 318
 319         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 320                 return -EINVAL;
 321         if (data->txpower.flags & IW_TXPOW_RANGE)
 322                 return -EINVAL;
 323         if (!chan)
 324                 return -EINVAL;
 325
 326         /* only change when not disabling */
 327         if (!data->txpower.disabled) {
 328                 if (data->txpower.fixed) {
 329                         if (data->txpower.value < 0)
 330                                 return -EINVAL;
 331                         new_power_level = data->txpower.value;
 332                         /*
 333                          * Debatable, but we cannot do a fixed power
 334                          * level above the regulatory constraint.
 335                          * Use "iwconfig wlan0 txpower 15dBm" instead.
 336                          */
 337                         if (new_power_level > chan->max_power)
 338                                 return -EINVAL;
 339                 } else {
 340                         /*
 341                          * Automatic power level setting, max being the value
 342                          * passed in from userland.
 343                          */
 344                         if (data->txpower.value < 0)
 345                                 new_power_level = -1;
 346                         else
 347                                 new_power_level = data->txpower.value;
 348                 }
 349
 350                 reconf = true;
 351
 352                 /*
 353                  * ieee80211_hw_config() will limit to the channel's
 354                  * max power and possibly power constraint from AP.
 355                  */
 356                 local->user_power_level = new_power_level;
 357         }
 358
 359         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 360                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 361                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 362                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 363         }
 364
 365         if (reconf || reconf_flags)
 366                 ieee80211_hw_config(local, reconf_flags);
 367
 368         return 0;
 369 }
 370
 371 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 372                                    struct iw_request_info *info,
 373                                    union iwreq_data *data, char *extra)
 374 {
 375         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 376
 377         data->txpower.fixed = 1;
 378         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 379         data->txpower.value = local->hw.conf.power_level;
 380         data->txpower.flags = IW_TXPOW_DBM;
 381
 382         return 0;
 383 }
 384
 385 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 386                                     struct iw_request_info *info,
 387                                     struct iw_param *wrq,
 388                                     char *extra)
 389 {
 390         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 391         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 392         struct ieee80211_conf *conf = &local->hw.conf;
 393         int timeout = 0;
 394         bool ps;
 395
 396         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
 397                 return -EOPNOTSUPP;
 398
 399         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 400                 return -EINVAL;
 401
 402         if (wrq->disabled) {
 403                 ps = false;
 404                 timeout = 0;
 405                 goto set;
 406         }
 407
 408         switch (wrq->flags & IW_POWER_MODE) {
 409         case IW_POWER_ON:       /* If not specified */
 410         case IW_POWER_MODE:     /* If set all mask */
 411         case IW_POWER_ALL_R:    /* If explicitely state all */
 412                 ps = true;
 413                 break;
 414         default:                /* Otherwise we ignore */
 415                 return -EINVAL;
 416         }
 417
 418         if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
 419                 return -EINVAL;
 420
 421         if (wrq->flags & IW_POWER_TIMEOUT)
 422                 timeout = wrq->value / 1000;
 423
 424  set:
 425         if (ps == sdata->u.mgd.powersave && timeout == conf->dynamic_ps_timeout)
 426                 return 0;
 427
 428         sdata->u.mgd.powersave = ps;
 429         conf->dynamic_ps_timeout = timeout;
 430
 431         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
 432                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 433
 434         ieee80211_recalc_ps(local, -1);
 435
 436         return 0;
 437 }
 438
 439 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 440                                     struct iw_request_info *info,
 441                                     union iwreq_data *wrqu,
 442                                     char *extra)
 443 {
 444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 445
 446         wrqu->power.disabled = !sdata->u.mgd.powersave;
 447
 448         return 0;
 449 }
 450
 451 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 452                                    struct iw_request_info *info,
 453                                    struct iw_param *data, char *extra)
 454 {
 455         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 456         int ret = 0;
 457
 458         switch (data->flags & IW_AUTH_INDEX) {
 459         case IW_AUTH_WPA_VERSION:
 460         case IW_AUTH_CIPHER_GROUP:
 461         case IW_AUTH_WPA_ENABLED:
 462         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 463         case IW_AUTH_KEY_MGMT:
 464         case IW_AUTH_CIPHER_GROUP_MGMT:
 465                 break;
 466         case IW_AUTH_CIPHER_PAIRWISE:
 467                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 468                         if (data->value & (IW_AUTH_CIPHER_WEP40 |
 469                             IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
 470                                 sdata->u.mgd.flags |=
 471                                         IEEE80211_STA_TKIP_WEP_USED;
 472                         else
 473                                 sdata->u.mgd.flags &=
 474                                         ~IEEE80211_STA_TKIP_WEP_USED;
 475                 }
 476                 break;
 477         case IW_AUTH_DROP_UNENCRYPTED:
 478                 sdata->drop_unencrypted = !!data->value;
 479                 break;
 480         case IW_AUTH_PRIVACY_INVOKED:
 481                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 482                         ret = -EINVAL;
 483                 else {
 484                         sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 485                         /*
 486                          * Privacy invoked by wpa_supplicant, store the
 487                          * value and allow associating to a protected
 488                          * network without having a key up front.
 489                          */
 490                         if (data->value)
 491                                 sdata->u.mgd.flags |=
 492                                         IEEE80211_STA_PRIVACY_INVOKED;
 493                 }
 494                 break;
 495         case IW_AUTH_80211_AUTH_ALG:
 496                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 497                         sdata->u.mgd.auth_algs = data->value;
 498                 else
 499                         ret = -EOPNOTSUPP;
 500                 break;
 501         case IW_AUTH_MFP:
 502                 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
 503                         ret = -EOPNOTSUPP;
 504                         break;
 505                 }
 506                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 507                         switch (data->value) {
 508                         case IW_AUTH_MFP_DISABLED:
 509                                 sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
 510                                 break;
 511                         case IW_AUTH_MFP_OPTIONAL:
 512                                 sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
 513                                 break;
 514                         case IW_AUTH_MFP_REQUIRED:
 515                                 sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
 516                                 break;
 517                         default:
 518                                 ret = -EINVAL;
 519                         }
 520                 } else
 521                         ret = -EOPNOTSUPP;
 522                 break;
 523         default:
 524                 ret = -EOPNOTSUPP;
 525                 break;
 526         }
 527         return ret;
 528 }
 529
 530 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 531 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 532 {
 533         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 534         struct iw_statistics *wstats = &local->wstats;
 535         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 536         struct sta_info *sta = NULL;
 537
 538         rcu_read_lock();
 539
 540         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 541                 sta = sta_info_get(local, sdata->u.mgd.bssid);
 542
 543         if (!sta) {
 544                 wstats->discard.fragment = 0;
 545                 wstats->discard.misc = 0;
 546                 wstats->qual.qual = 0;
 547                 wstats->qual.level = 0;
 548                 wstats->qual.noise = 0;
 549                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 550         } else {
 551                 wstats->qual.updated = 0;
 552                 /*
 553                  * mirror what cfg80211 does for iwrange/scan results,
 554                  * otherwise userspace gets confused.
 555                  */
 556                 if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
 557                                        IEEE80211_HW_SIGNAL_DBM)) {
 558                         wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
 559                         wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
 560                 } else {
 561                         wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
 562                         wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
 563                 }
 564
 565                 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
 566                         wstats->qual.level = sta->last_signal;
 567                         wstats->qual.qual = sta->last_signal;
 568                 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
 569                         int sig = sta->last_signal;
 570
 571                         wstats->qual.updated |= IW_QUAL_DBM;
 572                         wstats->qual.level = sig;
 573                         if (sig < -110)
 574                                 sig = -110;
 575                         else if (sig > -40)
 576                                 sig = -40;
 577                         wstats->qual.qual = sig + 110;
 578                 }
 579
 580                 if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
 581                         /*
 582                          * This assumes that if driver reports noise, it also
 583                          * reports signal in dBm.
 584                          */
 585                         wstats->qual.noise = sta->last_noise;
 586                         wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
 587                 } else {
 588                         wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
 589                 }
 590         }
 591
 592         rcu_read_unlock();
 593
 594         return wstats;
 595 }
 596
 597 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 598                                    struct iw_request_info *info,
 599                                    struct iw_param *data, char *extra)
 600 {
 601         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 602         int ret = 0;
 603
 604         switch (data->flags & IW_AUTH_INDEX) {
 605         case IW_AUTH_80211_AUTH_ALG:
 606                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 607                         data->value = sdata->u.mgd.auth_algs;
 608                 else
 609                         ret = -EOPNOTSUPP;
 610                 break;
 611         default:
 612                 ret = -EOPNOTSUPP;
 613                 break;
 614         }
 615         return ret;
 616 }
 617
 618
 619 /* Structures to export the Wireless Handlers */
 620
 621 static const iw_handler ieee80211_handler[] =
 622 {
 623         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
 624         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
 625         (iw_handler) NULL,                              /* SIOCSIWNWID */
 626         (iw_handler) NULL,                              /* SIOCGIWNWID */
 627         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
 628         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
 629         (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
 630         (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
 631         (iw_handler) NULL,                              /* SIOCSIWSENS */
 632         (iw_handler) NULL,                              /* SIOCGIWSENS */
 633         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
 634         (iw_handler) cfg80211_wext_giwrange,            /* SIOCGIWRANGE */
 635         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
 636         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
 637         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
 638         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
 639         (iw_handler) NULL,                              /* SIOCSIWSPY */
 640         (iw_handler) NULL,                              /* SIOCGIWSPY */
 641         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
 642         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
 643         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
 644         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
 645         (iw_handler) cfg80211_wext_siwmlme,             /* SIOCSIWMLME */
 646         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
 647         (iw_handler) cfg80211_wext_siwscan,             /* SIOCSIWSCAN */
 648         (iw_handler) cfg80211_wext_giwscan,             /* SIOCGIWSCAN */
 649         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
 650         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
 651         (iw_handler) NULL,                              /* SIOCSIWNICKN */
 652         (iw_handler) NULL,                              /* SIOCGIWNICKN */
 653         (iw_handler) NULL,                              /* -- hole -- */
 654         (iw_handler) NULL,                              /* -- hole -- */
 655         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
 656         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
 657         (iw_handler) cfg80211_wext_siwrts,              /* SIOCSIWRTS */
 658         (iw_handler) cfg80211_wext_giwrts,              /* SIOCGIWRTS */
 659         (iw_handler) cfg80211_wext_siwfrag,             /* SIOCSIWFRAG */
 660         (iw_handler) cfg80211_wext_giwfrag,             /* SIOCGIWFRAG */
 661         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
 662         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
 663         (iw_handler) cfg80211_wext_siwretry,            /* SIOCSIWRETRY */
 664         (iw_handler) cfg80211_wext_giwretry,            /* SIOCGIWRETRY */
 665         (iw_handler) cfg80211_wext_siwencode,           /* SIOCSIWENCODE */
 666         (iw_handler) cfg80211_wext_giwencode,           /* SIOCGIWENCODE */
 667         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
 668         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
 669         (iw_handler) NULL,                              /* -- hole -- */
 670         (iw_handler) NULL,                              /* -- hole -- */
 671         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
 672         (iw_handler) NULL,                              /* SIOCGIWGENIE */
 673         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
 674         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
 675         (iw_handler) cfg80211_wext_siwencodeext,        /* SIOCSIWENCODEEXT */
 676         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
 677         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
 678         (iw_handler) NULL,                              /* -- hole -- */
 679 };
 680
 681 const struct iw_handler_def ieee80211_iw_handler_def =
 682 {
 683         .num_standard   = ARRAY_SIZE(ieee80211_handler),
 684         .standard       = (iw_handler *) ieee80211_handler,
 685         .get_wireless_stats = ieee80211_get_wireless_stats,
 686 };