Pileus Git - ~andy/linux/blob - 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_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
  31                                     int idx, int alg, int remove,
  32                                     int set_tx_key, const u8 *_key,
  33                                     size_t key_len)
  34 {
  35         struct ieee80211_local *local = sdata->local;
  36         struct sta_info *sta;
  37         struct ieee80211_key *key;
  38         int err;
  39
  40         if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  41                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  42                        sdata->dev->name, idx);
  43                 return -EINVAL;
  44         }
  45
  46         if (remove) {
  47                 rcu_read_lock();
  48
  49                 err = 0;
  50
  51                 if (is_broadcast_ether_addr(sta_addr)) {
  52                         key = sdata->keys[idx];
  53                 } else {
  54                         sta = sta_info_get(local, sta_addr);
  55                         if (!sta) {
  56                                 err = -ENOENT;
  57                                 goto out_unlock;
  58                         }
  59                         key = sta->key;
  60                 }
  61
  62                 ieee80211_key_free(key);
  63         } else {
  64                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
  65                 if (!key)
  66                         return -ENOMEM;
  67
  68                 sta = NULL;
  69                 err = 0;
  70
  71                 rcu_read_lock();
  72
  73                 if (!is_broadcast_ether_addr(sta_addr)) {
  74                         set_tx_key = 0;
  75                         /*
  76                          * According to the standard, the key index of a
  77                          * pairwise key must be zero. However, some AP are
  78                          * broken when it comes to WEP key indices, so we
  79                          * work around this.
  80                          */
  81                         if (idx != 0 && alg != ALG_WEP) {
  82                                 ieee80211_key_free(key);
  83                                 err = -EINVAL;
  84                                 goto out_unlock;
  85                         }
  86
  87                         sta = sta_info_get(local, sta_addr);
  88                         if (!sta) {
  89                                 ieee80211_key_free(key);
  90                                 err = -ENOENT;
  91                                 goto out_unlock;
  92                         }
  93                 }
  94
  95                 if (alg == ALG_WEP &&
  96                         key_len != LEN_WEP40 && key_len != LEN_WEP104) {
  97                         ieee80211_key_free(key);
  98                         err = -EINVAL;
  99                         goto out_unlock;
 100                 }
 101
 102                 ieee80211_key_link(key, sdata, sta);
 103
 104                 if (set_tx_key || (!sta && !sdata->default_key && key))
 105                         ieee80211_set_default_key(sdata, idx);
 106         }
 107
 108  out_unlock:
 109         rcu_read_unlock();
 110
 111         return err;
 112 }
 113
 114 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 115                                     struct iw_request_info *info,
 116                                     struct iw_point *data, char *extra)
 117 {
 118         struct ieee80211_sub_if_data *sdata;
 119
 120         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 121
 122         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 123                 return -EOPNOTSUPP;
 124
 125         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 126             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 127                 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
 128                 if (ret)
 129                         return ret;
 130                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 131                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 132                 return 0;
 133         }
 134
 135         return -EOPNOTSUPP;
 136 }
 137
 138 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 139                                  struct iw_request_info *info,
 140                                  struct iw_point *data, char *extra)
 141 {
 142         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 143         struct iw_range *range = (struct iw_range *) extra;
 144         enum ieee80211_band band;
 145         int c = 0;
 146
 147         data->length = sizeof(struct iw_range);
 148         memset(range, 0, sizeof(struct iw_range));
 149
 150         range->we_version_compiled = WIRELESS_EXT;
 151         range->we_version_source = 21;
 152         range->retry_capa = IW_RETRY_LIMIT;
 153         range->retry_flags = IW_RETRY_LIMIT;
 154         range->min_retry = 0;
 155         range->max_retry = 255;
 156         range->min_rts = 0;
 157         range->max_rts = 2347;
 158         range->min_frag = 256;
 159         range->max_frag = 2346;
 160
 161         range->encoding_size[0] = 5;
 162         range->encoding_size[1] = 13;
 163         range->num_encoding_sizes = 2;
 164         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 165
 166         if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC ||
 167             local->hw.flags & IEEE80211_HW_SIGNAL_DB)
 168                 range->max_qual.level = local->hw.max_signal;
 169         else if  (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
 170                 range->max_qual.level = -110;
 171         else
 172                 range->max_qual.level = 0;
 173
 174         if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
 175                 range->max_qual.noise = -110;
 176         else
 177                 range->max_qual.noise = 0;
 178
 179         range->max_qual.qual = 100;
 180         range->max_qual.updated = local->wstats_flags;
 181
 182         range->avg_qual.qual = 50;
 183         /* not always true but better than nothing */
 184         range->avg_qual.level = range->max_qual.level / 2;
 185         range->avg_qual.noise = range->max_qual.noise / 2;
 186         range->avg_qual.updated = local->wstats_flags;
 187
 188         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 189                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 190
 191
 192         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 193                 int i;
 194                 struct ieee80211_supported_band *sband;
 195
 196                 sband = local->hw.wiphy->bands[band];
 197
 198                 if (!sband)
 199                         continue;
 200
 201                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 202                         struct ieee80211_channel *chan = &sband->channels[i];
 203
 204                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 205                                 range->freq[c].i =
 206                                         ieee80211_frequency_to_channel(
 207                                                 chan->center_freq);
 208                                 range->freq[c].m = chan->center_freq;
 209                                 range->freq[c].e = 6;
 210                                 c++;
 211                         }
 212                 }
 213         }
 214         range->num_channels = c;
 215         range->num_frequency = c;
 216
 217         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 218         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 219         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 220
 221         range->scan_capa |= IW_SCAN_CAPA_ESSID;
 222
 223         return 0;
 224 }
 225
 226
 227 static int ieee80211_ioctl_siwmode(struct net_device *dev,
 228                                    struct iw_request_info *info,
 229                                    __u32 *mode, char *extra)
 230 {
 231         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 232         struct ieee80211_local *local = sdata->local;
 233         int type;
 234
 235         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 236                 return -EOPNOTSUPP;
 237
 238         switch (*mode) {
 239         case IW_MODE_INFRA:
 240                 type = NL80211_IFTYPE_STATION;
 241                 break;
 242         case IW_MODE_ADHOC:
 243                 /* Setting ad-hoc mode on non ibss channel is not
 244                  * supported.
 245                  */
 246                 if (local->oper_channel &&
 247                     (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS))
 248                         return -EOPNOTSUPP;
 249
 250                 type = NL80211_IFTYPE_ADHOC;
 251                 break;
 252         case IW_MODE_REPEAT:
 253                 type = NL80211_IFTYPE_WDS;
 254                 break;
 255         case IW_MODE_MONITOR:
 256                 type = NL80211_IFTYPE_MONITOR;
 257                 break;
 258         default:
 259                 return -EINVAL;
 260         }
 261
 262         return ieee80211_if_change_type(sdata, type);
 263 }
 264
 265
 266 static int ieee80211_ioctl_giwmode(struct net_device *dev,
 267                                    struct iw_request_info *info,
 268                                    __u32 *mode, char *extra)
 269 {
 270         struct ieee80211_sub_if_data *sdata;
 271
 272         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 273         switch (sdata->vif.type) {
 274         case NL80211_IFTYPE_AP:
 275                 *mode = IW_MODE_MASTER;
 276                 break;
 277         case NL80211_IFTYPE_STATION:
 278                 *mode = IW_MODE_INFRA;
 279                 break;
 280         case NL80211_IFTYPE_ADHOC:
 281                 *mode = IW_MODE_ADHOC;
 282                 break;
 283         case NL80211_IFTYPE_MONITOR:
 284                 *mode = IW_MODE_MONITOR;
 285                 break;
 286         case NL80211_IFTYPE_WDS:
 287                 *mode = IW_MODE_REPEAT;
 288                 break;
 289         case NL80211_IFTYPE_AP_VLAN:
 290                 *mode = IW_MODE_SECOND;         /* FIXME */
 291                 break;
 292         default:
 293                 *mode = IW_MODE_AUTO;
 294                 break;
 295         }
 296         return 0;
 297 }
 298
 299 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 300                                    struct iw_request_info *info,
 301                                    struct iw_freq *freq, char *extra)
 302 {
 303         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 304
 305         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 306                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 307
 308         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 309         if (freq->e == 0) {
 310                 if (freq->m < 0) {
 311                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 312                                 sdata->u.sta.flags |=
 313                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 314                         return 0;
 315                 } else
 316                         return ieee80211_set_freq(sdata,
 317                                 ieee80211_channel_to_frequency(freq->m));
 318         } else {
 319                 int i, div = 1000000;
 320                 for (i = 0; i < freq->e; i++)
 321                         div /= 10;
 322                 if (div > 0)
 323                         return ieee80211_set_freq(sdata, freq->m / div);
 324                 else
 325                         return -EINVAL;
 326         }
 327 }
 328
 329
 330 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 331                                    struct iw_request_info *info,
 332                                    struct iw_freq *freq, char *extra)
 333 {
 334         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 335
 336         freq->m = local->hw.conf.channel->center_freq;
 337         freq->e = 6;
 338
 339         return 0;
 340 }
 341
 342
 343 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 344                                     struct iw_request_info *info,
 345                                     struct iw_point *data, char *ssid)
 346 {
 347         struct ieee80211_sub_if_data *sdata;
 348         size_t len = data->length;
 349
 350         /* iwconfig uses nul termination in SSID.. */
 351         if (len > 0 && ssid[len - 1] == '\0')
 352                 len--;
 353
 354         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 355         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 356             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 357                 int ret;
 358                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 359                         if (len > IEEE80211_MAX_SSID_LEN)
 360                                 return -EINVAL;
 361                         memcpy(sdata->u.sta.ssid, ssid, len);
 362                         sdata->u.sta.ssid_len = len;
 363                         return 0;
 364                 }
 365                 if (data->flags)
 366                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 367                 else
 368                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 369                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
 370                 if (ret)
 371                         return ret;
 372                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 373                 return 0;
 374         }
 375
 376         return -EOPNOTSUPP;
 377 }
 378
 379
 380 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 381                                     struct iw_request_info *info,
 382                                     struct iw_point *data, char *ssid)
 383 {
 384         size_t len;
 385
 386         struct ieee80211_sub_if_data *sdata;
 387         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 388         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 389             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 390                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
 391                 if (res == 0) {
 392                         data->length = len;
 393                         data->flags = 1;
 394                 } else
 395                         data->flags = 0;
 396                 return res;
 397         }
 398
 399         return -EOPNOTSUPP;
 400 }
 401
 402
 403 static int ieee80211_ioctl_siwap(struct net_device *dev,
 404                                  struct iw_request_info *info,
 405                                  struct sockaddr *ap_addr, char *extra)
 406 {
 407         struct ieee80211_sub_if_data *sdata;
 408
 409         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 410         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 411             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 412                 int ret;
 413                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 414                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 415                                ETH_ALEN);
 416                         return 0;
 417                 }
 418                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 419                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 420                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 421                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 422                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 423                 else
 424                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 425                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 426                 if (ret)
 427                         return ret;
 428                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 429                 return 0;
 430         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 431                 /*
 432                  * If it is necessary to update the WDS peer address
 433                  * while the interface is running, then we need to do
 434                  * more work here, namely if it is running we need to
 435                  * add a new and remove the old STA entry, this is
 436                  * normally handled by _open() and _stop().
 437                  */
 438                 if (netif_running(dev))
 439                         return -EBUSY;
 440
 441                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 442                        ETH_ALEN);
 443
 444                 return 0;
 445         }
 446
 447         return -EOPNOTSUPP;
 448 }
 449
 450
 451 static int ieee80211_ioctl_giwap(struct net_device *dev,
 452                                  struct iw_request_info *info,
 453                                  struct sockaddr *ap_addr, char *extra)
 454 {
 455         struct ieee80211_sub_if_data *sdata;
 456
 457         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 458         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 459             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 460                 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
 461                     sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
 462                         ap_addr->sa_family = ARPHRD_ETHER;
 463                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 464                         return 0;
 465                 } else {
 466                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 467                         return 0;
 468                 }
 469         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 470                 ap_addr->sa_family = ARPHRD_ETHER;
 471                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 472                 return 0;
 473         }
 474
 475         return -EOPNOTSUPP;
 476 }
 477
 478
 479 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 480                                    struct iw_request_info *info,
 481                                    union iwreq_data *wrqu, char *extra)
 482 {
 483         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 484         struct iw_scan_req *req = NULL;
 485         u8 *ssid = NULL;
 486         size_t ssid_len = 0;
 487
 488         if (!netif_running(dev))
 489                 return -ENETDOWN;
 490
 491         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 492             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
 493             sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
 494             sdata->vif.type != NL80211_IFTYPE_AP)
 495                 return -EOPNOTSUPP;
 496
 497         /* if SSID was specified explicitly then use that */
 498         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
 499             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 500                 req = (struct iw_scan_req *)extra;
 501                 ssid = req->essid;
 502                 ssid_len = req->essid_len;
 503         }
 504
 505         return ieee80211_request_scan(sdata, ssid, ssid_len);
 506 }
 507
 508
 509 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 510                                    struct iw_request_info *info,
 511                                    struct iw_point *data, char *extra)
 512 {
 513         int res;
 514         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 515         struct ieee80211_sub_if_data *sdata;
 516
 517         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 518
 519         if (local->sw_scanning || local->hw_scanning)
 520                 return -EAGAIN;
 521
 522         res = ieee80211_scan_results(local, info, extra, data->length);
 523         if (res >= 0) {
 524                 data->length = res;
 525                 return 0;
 526         }
 527         data->length = 0;
 528         return res;
 529 }
 530
 531
 532 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 533                                   struct iw_request_info *info,
 534                                   struct iw_param *rate, char *extra)
 535 {
 536         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 537         int i, err = -EINVAL;
 538         u32 target_rate = rate->value / 100000;
 539         struct ieee80211_sub_if_data *sdata;
 540         struct ieee80211_supported_band *sband;
 541
 542         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 543
 544         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 545
 546         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 547          * target_rate = X, rate->fixed = 1 means only rate X
 548          * target_rate = X, rate->fixed = 0 means all rates <= X */
 549         sdata->max_ratectrl_rateidx = -1;
 550         sdata->force_unicast_rateidx = -1;
 551         if (rate->value < 0)
 552                 return 0;
 553
 554         for (i=0; i< sband->n_bitrates; i++) {
 555                 struct ieee80211_rate *brate = &sband->bitrates[i];
 556                 int this_rate = brate->bitrate;
 557
 558                 if (target_rate == this_rate) {
 559                         sdata->max_ratectrl_rateidx = i;
 560                         if (rate->fixed)
 561                                 sdata->force_unicast_rateidx = i;
 562                         err = 0;
 563                         break;
 564                 }
 565         }
 566         return err;
 567 }
 568
 569 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 570                                   struct iw_request_info *info,
 571                                   struct iw_param *rate, char *extra)
 572 {
 573         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 574         struct sta_info *sta;
 575         struct ieee80211_sub_if_data *sdata;
 576         struct ieee80211_supported_band *sband;
 577
 578         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 579
 580         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 581                 return -EOPNOTSUPP;
 582
 583         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 584
 585         rcu_read_lock();
 586
 587         sta = sta_info_get(local, sdata->u.sta.bssid);
 588
 589         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
 590                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
 591         else
 592                 rate->value = 0;
 593
 594         rcu_read_unlock();
 595
 596         if (!sta)
 597                 return -ENODEV;
 598
 599         rate->value *= 100000;
 600
 601         return 0;
 602 }
 603
 604 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 605                                       struct iw_request_info *info,
 606                                       union iwreq_data *data, char *extra)
 607 {
 608         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 609         struct ieee80211_channel* chan = local->hw.conf.channel;
 610         u32 reconf_flags = 0;
 611         int new_power_level;
 612
 613         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 614                 return -EINVAL;
 615         if (data->txpower.flags & IW_TXPOW_RANGE)
 616                 return -EINVAL;
 617         if (!chan)
 618                 return -EINVAL;
 619
 620         if (data->txpower.fixed)
 621                 new_power_level = min(data->txpower.value, chan->max_power);
 622         else /* Automatic power level setting */
 623                 new_power_level = chan->max_power;
 624
 625         if (local->hw.conf.power_level != new_power_level) {
 626                 local->hw.conf.power_level = new_power_level;
 627                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
 628         }
 629
 630         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 631                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 632                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 633                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 634         }
 635
 636         if (reconf_flags)
 637                 ieee80211_hw_config(local, reconf_flags);
 638
 639         return 0;
 640 }
 641
 642 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 643                                    struct iw_request_info *info,
 644                                    union iwreq_data *data, char *extra)
 645 {
 646         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 647
 648         data->txpower.fixed = 1;
 649         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 650         data->txpower.value = local->hw.conf.power_level;
 651         data->txpower.flags = IW_TXPOW_DBM;
 652
 653         return 0;
 654 }
 655
 656 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 657                                   struct iw_request_info *info,
 658                                   struct iw_param *rts, char *extra)
 659 {
 660         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 661
 662         if (rts->disabled)
 663                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 664         else if (!rts->fixed)
 665                 /* if the rts value is not fixed, then take default */
 666                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 667         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 668                 return -EINVAL;
 669         else
 670                 local->rts_threshold = rts->value;
 671
 672         /* If the wlan card performs RTS/CTS in hardware/firmware,
 673          * configure it here */
 674
 675         if (local->ops->set_rts_threshold)
 676                 local->ops->set_rts_threshold(local_to_hw(local),
 677                                              local->rts_threshold);
 678
 679         return 0;
 680 }
 681
 682 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 683                                   struct iw_request_info *info,
 684                                   struct iw_param *rts, char *extra)
 685 {
 686         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 687
 688         rts->value = local->rts_threshold;
 689         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 690         rts->fixed = 1;
 691
 692         return 0;
 693 }
 694
 695
 696 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 697                                    struct iw_request_info *info,
 698                                    struct iw_param *frag, char *extra)
 699 {
 700         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 701
 702         if (frag->disabled)
 703                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 704         else if (!frag->fixed)
 705                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 706         else if (frag->value < 256 ||
 707                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 708                 return -EINVAL;
 709         else {
 710                 /* Fragment length must be even, so strip LSB. */
 711                 local->fragmentation_threshold = frag->value & ~0x1;
 712         }
 713
 714         /* If the wlan card performs fragmentation in hardware/firmware,
 715          * configure it here */
 716
 717         if (local->ops->set_frag_threshold)
 718                 return local->ops->set_frag_threshold(
 719                         local_to_hw(local),
 720                         local->fragmentation_threshold);
 721
 722         return 0;
 723 }
 724
 725 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 726                                    struct iw_request_info *info,
 727                                    struct iw_param *frag, char *extra)
 728 {
 729         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 730
 731         frag->value = local->fragmentation_threshold;
 732         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 733         frag->fixed = 1;
 734
 735         return 0;
 736 }
 737
 738
 739 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 740                                     struct iw_request_info *info,
 741                                     struct iw_param *retry, char *extra)
 742 {
 743         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 744
 745         if (retry->disabled ||
 746             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 747                 return -EINVAL;
 748
 749         if (retry->flags & IW_RETRY_MAX) {
 750                 local->hw.conf.long_frame_max_tx_count = retry->value;
 751         } else if (retry->flags & IW_RETRY_MIN) {
 752                 local->hw.conf.short_frame_max_tx_count = retry->value;
 753         } else {
 754                 local->hw.conf.long_frame_max_tx_count = retry->value;
 755                 local->hw.conf.short_frame_max_tx_count = retry->value;
 756         }
 757
 758         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
 759
 760         return 0;
 761 }
 762
 763
 764 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 765                                     struct iw_request_info *info,
 766                                     struct iw_param *retry, char *extra)
 767 {
 768         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 769
 770         retry->disabled = 0;
 771         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 772                 /* first return min value, iwconfig will ask max value
 773                  * later if needed */
 774                 retry->flags |= IW_RETRY_LIMIT;
 775                 retry->value = local->hw.conf.short_frame_max_tx_count;
 776                 if (local->hw.conf.long_frame_max_tx_count !=
 777                     local->hw.conf.short_frame_max_tx_count)
 778                         retry->flags |= IW_RETRY_MIN;
 779                 return 0;
 780         }
 781         if (retry->flags & IW_RETRY_MAX) {
 782                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 783                 retry->value = local->hw.conf.long_frame_max_tx_count;
 784         }
 785
 786         return 0;
 787 }
 788
 789 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 790                                    struct iw_request_info *info,
 791                                    struct iw_point *data, char *extra)
 792 {
 793         struct ieee80211_sub_if_data *sdata;
 794         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 795
 796         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 797         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 798             sdata->vif.type != NL80211_IFTYPE_ADHOC)
 799                 return -EINVAL;
 800
 801         switch (mlme->cmd) {
 802         case IW_MLME_DEAUTH:
 803                 /* TODO: mlme->addr.sa_data */
 804                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
 805         case IW_MLME_DISASSOC:
 806                 /* TODO: mlme->addr.sa_data */
 807                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
 808         default:
 809                 return -EOPNOTSUPP;
 810         }
 811 }
 812
 813
 814 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 815                                      struct iw_request_info *info,
 816                                      struct iw_point *erq, char *keybuf)
 817 {
 818         struct ieee80211_sub_if_data *sdata;
 819         int idx, i, alg = ALG_WEP;
 820         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 821         int remove = 0;
 822
 823         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 824
 825         idx = erq->flags & IW_ENCODE_INDEX;
 826         if (idx == 0) {
 827                 if (sdata->default_key)
 828                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 829                                 if (sdata->default_key == sdata->keys[i]) {
 830                                         idx = i;
 831                                         break;
 832                                 }
 833                         }
 834         } else if (idx < 1 || idx > 4)
 835                 return -EINVAL;
 836         else
 837                 idx--;
 838
 839         if (erq->flags & IW_ENCODE_DISABLED)
 840                 remove = 1;
 841         else if (erq->length == 0) {
 842                 /* No key data - just set the default TX key index */
 843                 ieee80211_set_default_key(sdata, idx);
 844                 return 0;
 845         }
 846
 847         return ieee80211_set_encryption(
 848                 sdata, bcaddr,
 849                 idx, alg, remove,
 850                 !sdata->default_key,
 851                 keybuf, erq->length);
 852 }
 853
 854
 855 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 856                                      struct iw_request_info *info,
 857                                      struct iw_point *erq, char *key)
 858 {
 859         struct ieee80211_sub_if_data *sdata;
 860         int idx, i;
 861
 862         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 863
 864         idx = erq->flags & IW_ENCODE_INDEX;
 865         if (idx < 1 || idx > 4) {
 866                 idx = -1;
 867                 if (!sdata->default_key)
 868                         idx = 0;
 869                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 870                         if (sdata->default_key == sdata->keys[i]) {
 871                                 idx = i;
 872                                 break;
 873                         }
 874                 }
 875                 if (idx < 0)
 876                         return -EINVAL;
 877         } else
 878                 idx--;
 879
 880         erq->flags = idx + 1;
 881
 882         if (!sdata->keys[idx]) {
 883                 erq->length = 0;
 884                 erq->flags |= IW_ENCODE_DISABLED;
 885                 return 0;
 886         }
 887
 888         memcpy(key, sdata->keys[idx]->conf.key,
 889                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 890         erq->length = sdata->keys[idx]->conf.keylen;
 891         erq->flags |= IW_ENCODE_ENABLED;
 892
 893         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 894                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
 895                 switch (ifsta->auth_alg) {
 896                 case WLAN_AUTH_OPEN:
 897                 case WLAN_AUTH_LEAP:
 898                         erq->flags |= IW_ENCODE_OPEN;
 899                         break;
 900                 case WLAN_AUTH_SHARED_KEY:
 901                         erq->flags |= IW_ENCODE_RESTRICTED;
 902                         break;
 903                 }
 904         }
 905
 906         return 0;
 907 }
 908
 909 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 910                                     struct iw_request_info *info,
 911                                     struct iw_param *wrq,
 912                                     char *extra)
 913 {
 914         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 915         struct ieee80211_conf *conf = &local->hw.conf;
 916
 917         if (wrq->disabled) {
 918                 conf->flags &= ~IEEE80211_CONF_PS;
 919                 return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 920         }
 921
 922         switch (wrq->flags & IW_POWER_MODE) {
 923         case IW_POWER_ON:       /* If not specified */
 924         case IW_POWER_MODE:     /* If set all mask */
 925         case IW_POWER_ALL_R:    /* If explicitely state all */
 926                 conf->flags |= IEEE80211_CONF_PS;
 927                 break;
 928         default:                /* Otherwise we don't support it */
 929                 return -EINVAL;
 930         }
 931
 932         return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 933 }
 934
 935 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 936                                     struct iw_request_info *info,
 937                                     union iwreq_data *wrqu,
 938                                     char *extra)
 939 {
 940         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 941         struct ieee80211_conf *conf = &local->hw.conf;
 942
 943         wrqu->power.disabled = !(conf->flags & IEEE80211_CONF_PS);
 944
 945         return 0;
 946 }
 947
 948 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 949                                    struct iw_request_info *info,
 950                                    struct iw_param *data, char *extra)
 951 {
 952         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 953         int ret = 0;
 954
 955         switch (data->flags & IW_AUTH_INDEX) {
 956         case IW_AUTH_WPA_VERSION:
 957         case IW_AUTH_CIPHER_PAIRWISE:
 958         case IW_AUTH_CIPHER_GROUP:
 959         case IW_AUTH_WPA_ENABLED:
 960         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 961         case IW_AUTH_KEY_MGMT:
 962                 break;
 963         case IW_AUTH_DROP_UNENCRYPTED:
 964                 sdata->drop_unencrypted = !!data->value;
 965                 break;
 966         case IW_AUTH_PRIVACY_INVOKED:
 967                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 968                         ret = -EINVAL;
 969                 else {
 970                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 971                         /*
 972                          * Privacy invoked by wpa_supplicant, store the
 973                          * value and allow associating to a protected
 974                          * network without having a key up front.
 975                          */
 976                         if (data->value)
 977                                 sdata->u.sta.flags |=
 978                                         IEEE80211_STA_PRIVACY_INVOKED;
 979                 }
 980                 break;
 981         case IW_AUTH_80211_AUTH_ALG:
 982                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 983                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
 984                         sdata->u.sta.auth_algs = data->value;
 985                 else
 986                         ret = -EOPNOTSUPP;
 987                 break;
 988         default:
 989                 ret = -EOPNOTSUPP;
 990                 break;
 991         }
 992         return ret;
 993 }
 994
 995 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 996 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 997 {
 998         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 999         struct iw_statistics *wstats = &local->wstats;
1000         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1001         struct sta_info *sta = NULL;
1002
1003         rcu_read_lock();
1004
1005         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1006             sdata->vif.type == NL80211_IFTYPE_ADHOC)
1007                 sta = sta_info_get(local, sdata->u.sta.bssid);
1008         if (!sta) {
1009                 wstats->discard.fragment = 0;
1010                 wstats->discard.misc = 0;
1011                 wstats->qual.qual = 0;
1012                 wstats->qual.level = 0;
1013                 wstats->qual.noise = 0;
1014                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1015         } else {
1016                 wstats->qual.level = sta->last_signal;
1017                 wstats->qual.qual = sta->last_qual;
1018                 wstats->qual.noise = sta->last_noise;
1019                 wstats->qual.updated = local->wstats_flags;
1020         }
1021
1022         rcu_read_unlock();
1023
1024         return wstats;
1025 }
1026
1027 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1028                                    struct iw_request_info *info,
1029                                    struct iw_param *data, char *extra)
1030 {
1031         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1032         int ret = 0;
1033
1034         switch (data->flags & IW_AUTH_INDEX) {
1035         case IW_AUTH_80211_AUTH_ALG:
1036                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1037                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1038                         data->value = sdata->u.sta.auth_algs;
1039                 else
1040                         ret = -EOPNOTSUPP;
1041                 break;
1042         default:
1043                 ret = -EOPNOTSUPP;
1044                 break;
1045         }
1046         return ret;
1047 }
1048
1049
1050 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1051                                         struct iw_request_info *info,
1052                                         struct iw_point *erq, char *extra)
1053 {
1054         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1055         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1056         int uninitialized_var(alg), idx, i, remove = 0;
1057
1058         switch (ext->alg) {
1059         case IW_ENCODE_ALG_NONE:
1060                 remove = 1;
1061                 break;
1062         case IW_ENCODE_ALG_WEP:
1063                 alg = ALG_WEP;
1064                 break;
1065         case IW_ENCODE_ALG_TKIP:
1066                 alg = ALG_TKIP;
1067                 break;
1068         case IW_ENCODE_ALG_CCMP:
1069                 alg = ALG_CCMP;
1070                 break;
1071         default:
1072                 return -EOPNOTSUPP;
1073         }
1074
1075         if (erq->flags & IW_ENCODE_DISABLED)
1076                 remove = 1;
1077
1078         idx = erq->flags & IW_ENCODE_INDEX;
1079         if (idx < 1 || idx > 4) {
1080                 idx = -1;
1081                 if (!sdata->default_key)
1082                         idx = 0;
1083                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1084                         if (sdata->default_key == sdata->keys[i]) {
1085                                 idx = i;
1086                                 break;
1087                         }
1088                 }
1089                 if (idx < 0)
1090                         return -EINVAL;
1091         } else
1092                 idx--;
1093
1094         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1095                                         remove,
1096                                         ext->ext_flags &
1097                                         IW_ENCODE_EXT_SET_TX_KEY,
1098                                         ext->key, ext->key_len);
1099 }
1100
1101
1102 /* Structures to export the Wireless Handlers */
1103
1104 static const iw_handler ieee80211_handler[] =
1105 {
1106         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1107         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
1108         (iw_handler) NULL,                              /* SIOCSIWNWID */
1109         (iw_handler) NULL,                              /* SIOCGIWNWID */
1110         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1111         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1112         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1113         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1114         (iw_handler) NULL,                              /* SIOCSIWSENS */
1115         (iw_handler) NULL,                              /* SIOCGIWSENS */
1116         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1117         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1118         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1119         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1120         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1121         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1122         (iw_handler) NULL,                              /* SIOCSIWSPY */
1123         (iw_handler) NULL,                              /* SIOCGIWSPY */
1124         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1125         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1126         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1127         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1128         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1129         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1130         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1131         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1132         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1133         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1134         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1135         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1136         (iw_handler) NULL,                              /* -- hole -- */
1137         (iw_handler) NULL,                              /* -- hole -- */
1138         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1139         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1140         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1141         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1142         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1143         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1144         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1145         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1146         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1147         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1148         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1149         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1150         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1151         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1152         (iw_handler) NULL,                              /* -- hole -- */
1153         (iw_handler) NULL,                              /* -- hole -- */
1154         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1155         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1156         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1157         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1158         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1159         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1160         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1161         (iw_handler) NULL,                              /* -- hole -- */
1162 };
1163
1164 const struct iw_handler_def ieee80211_iw_handler_def =
1165 {
1166         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1167         .standard       = (iw_handler *) ieee80211_handler,
1168         .get_wireless_stats = ieee80211_get_wireless_stats,
1169 };