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 net_device *dev, 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 = wdev_priv(dev->ieee80211_ptr);
  36         struct sta_info *sta;
  37         struct ieee80211_key *key;
  38         struct ieee80211_sub_if_data *sdata;
  39         int err;
  40
  41         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  42
  43         if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  44                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  45                        dev->name, idx);
  46                 return -EINVAL;
  47         }
  48
  49         if (remove) {
  50                 rcu_read_lock();
  51
  52                 err = 0;
  53
  54                 if (is_broadcast_ether_addr(sta_addr)) {
  55                         key = sdata->keys[idx];
  56                 } else {
  57                         sta = sta_info_get(local, sta_addr);
  58                         if (!sta) {
  59                                 err = -ENOENT;
  60                                 goto out_unlock;
  61                         }
  62                         key = sta->key;
  63                 }
  64
  65                 ieee80211_key_free(key);
  66         } else {
  67                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
  68                 if (!key)
  69                         return -ENOMEM;
  70
  71                 sta = NULL;
  72                 err = 0;
  73
  74                 rcu_read_lock();
  75
  76                 if (!is_broadcast_ether_addr(sta_addr)) {
  77                         set_tx_key = 0;
  78                         /*
  79                          * According to the standard, the key index of a
  80                          * pairwise key must be zero. However, some AP are
  81                          * broken when it comes to WEP key indices, so we
  82                          * work around this.
  83                          */
  84                         if (idx != 0 && alg != ALG_WEP) {
  85                                 ieee80211_key_free(key);
  86                                 err = -EINVAL;
  87                                 goto out_unlock;
  88                         }
  89
  90                         sta = sta_info_get(local, sta_addr);
  91                         if (!sta) {
  92                                 ieee80211_key_free(key);
  93                                 err = -ENOENT;
  94                                 goto out_unlock;
  95                         }
  96                 }
  97
  98                 ieee80211_key_link(key, sdata, sta);
  99
 100                 if (set_tx_key || (!sta && !sdata->default_key && key))
 101                         ieee80211_set_default_key(sdata, idx);
 102         }
 103
 104  out_unlock:
 105         rcu_read_unlock();
 106
 107         return err;
 108 }
 109
 110 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 111                                     struct iw_request_info *info,
 112                                     struct iw_point *data, char *extra)
 113 {
 114         struct ieee80211_sub_if_data *sdata;
 115
 116         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 117
 118         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 119                 return -EOPNOTSUPP;
 120
 121         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 122             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 123                 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
 124                 if (ret)
 125                         return ret;
 126                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 127                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 128                 return 0;
 129         }
 130
 131         return -EOPNOTSUPP;
 132 }
 133
 134 static int ieee80211_ioctl_giwname(struct net_device *dev,
 135                                    struct iw_request_info *info,
 136                                    char *name, char *extra)
 137 {
 138         strcpy(name, "IEEE 802.11");
 139
 140         return 0;
 141 }
 142
 143
 144 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 145                                  struct iw_request_info *info,
 146                                  struct iw_point *data, char *extra)
 147 {
 148         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 149         struct iw_range *range = (struct iw_range *) extra;
 150         enum ieee80211_band band;
 151         int c = 0;
 152
 153         data->length = sizeof(struct iw_range);
 154         memset(range, 0, sizeof(struct iw_range));
 155
 156         range->we_version_compiled = WIRELESS_EXT;
 157         range->we_version_source = 21;
 158         range->retry_capa = IW_RETRY_LIMIT;
 159         range->retry_flags = IW_RETRY_LIMIT;
 160         range->min_retry = 0;
 161         range->max_retry = 255;
 162         range->min_rts = 0;
 163         range->max_rts = 2347;
 164         range->min_frag = 256;
 165         range->max_frag = 2346;
 166
 167         range->encoding_size[0] = 5;
 168         range->encoding_size[1] = 13;
 169         range->num_encoding_sizes = 2;
 170         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 171
 172         range->max_qual.qual = local->hw.max_signal;
 173         range->max_qual.level = local->hw.max_rssi;
 174         range->max_qual.noise = local->hw.max_noise;
 175         range->max_qual.updated = local->wstats_flags;
 176
 177         range->avg_qual.qual = local->hw.max_signal/2;
 178         range->avg_qual.level = 0;
 179         range->avg_qual.noise = 0;
 180         range->avg_qual.updated = local->wstats_flags;
 181
 182         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 183                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 184
 185
 186         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 187                 int i;
 188                 struct ieee80211_supported_band *sband;
 189
 190                 sband = local->hw.wiphy->bands[band];
 191
 192                 if (!sband)
 193                         continue;
 194
 195                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 196                         struct ieee80211_channel *chan = &sband->channels[i];
 197
 198                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 199                                 range->freq[c].i =
 200                                         ieee80211_frequency_to_channel(
 201                                                 chan->center_freq);
 202                                 range->freq[c].m = chan->center_freq;
 203                                 range->freq[c].e = 6;
 204                                 c++;
 205                         }
 206                 }
 207         }
 208         range->num_channels = c;
 209         range->num_frequency = c;
 210
 211         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 212         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 213         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 214
 215         range->scan_capa |= IW_SCAN_CAPA_ESSID;
 216
 217         return 0;
 218 }
 219
 220
 221 static int ieee80211_ioctl_siwmode(struct net_device *dev,
 222                                    struct iw_request_info *info,
 223                                    __u32 *mode, char *extra)
 224 {
 225         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 226         int type;
 227
 228         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 229                 return -EOPNOTSUPP;
 230
 231         switch (*mode) {
 232         case IW_MODE_INFRA:
 233                 type = IEEE80211_IF_TYPE_STA;
 234                 break;
 235         case IW_MODE_ADHOC:
 236                 type = IEEE80211_IF_TYPE_IBSS;
 237                 break;
 238         case IW_MODE_REPEAT:
 239                 type = IEEE80211_IF_TYPE_WDS;
 240                 break;
 241         case IW_MODE_MONITOR:
 242                 type = IEEE80211_IF_TYPE_MNTR;
 243                 break;
 244         default:
 245                 return -EINVAL;
 246         }
 247
 248         if (type == sdata->vif.type)
 249                 return 0;
 250         if (netif_running(dev))
 251                 return -EBUSY;
 252
 253         ieee80211_if_reinit(dev);
 254         ieee80211_if_set_type(dev, type);
 255
 256         return 0;
 257 }
 258
 259
 260 static int ieee80211_ioctl_giwmode(struct net_device *dev,
 261                                    struct iw_request_info *info,
 262                                    __u32 *mode, char *extra)
 263 {
 264         struct ieee80211_sub_if_data *sdata;
 265
 266         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 267         switch (sdata->vif.type) {
 268         case IEEE80211_IF_TYPE_AP:
 269                 *mode = IW_MODE_MASTER;
 270                 break;
 271         case IEEE80211_IF_TYPE_STA:
 272                 *mode = IW_MODE_INFRA;
 273                 break;
 274         case IEEE80211_IF_TYPE_IBSS:
 275                 *mode = IW_MODE_ADHOC;
 276                 break;
 277         case IEEE80211_IF_TYPE_MNTR:
 278                 *mode = IW_MODE_MONITOR;
 279                 break;
 280         case IEEE80211_IF_TYPE_WDS:
 281                 *mode = IW_MODE_REPEAT;
 282                 break;
 283         case IEEE80211_IF_TYPE_VLAN:
 284                 *mode = IW_MODE_SECOND;         /* FIXME */
 285                 break;
 286         default:
 287                 *mode = IW_MODE_AUTO;
 288                 break;
 289         }
 290         return 0;
 291 }
 292
 293 int ieee80211_set_freq(struct ieee80211_local *local, int freqMHz)
 294 {
 295         int ret = -EINVAL;
 296         struct ieee80211_channel *chan;
 297
 298         chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
 299
 300         if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
 301                 local->oper_channel = chan;
 302
 303                 if (local->sta_sw_scanning || local->sta_hw_scanning)
 304                         ret = 0;
 305                 else
 306                         ret = ieee80211_hw_config(local);
 307
 308                 rate_control_clear(local);
 309         }
 310
 311         return ret;
 312 }
 313
 314 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 315                                    struct iw_request_info *info,
 316                                    struct iw_freq *freq, char *extra)
 317 {
 318         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 319         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 320
 321         if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
 322                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 323
 324         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 325         if (freq->e == 0) {
 326                 if (freq->m < 0) {
 327                         if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
 328                                 sdata->u.sta.flags |=
 329                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 330                         return 0;
 331                 } else
 332                         return ieee80211_set_freq(local,
 333                                 ieee80211_channel_to_frequency(freq->m));
 334         } else {
 335                 int i, div = 1000000;
 336                 for (i = 0; i < freq->e; i++)
 337                         div /= 10;
 338                 if (div > 0)
 339                         return ieee80211_set_freq(local, freq->m / div);
 340                 else
 341                         return -EINVAL;
 342         }
 343 }
 344
 345
 346 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 347                                    struct iw_request_info *info,
 348                                    struct iw_freq *freq, char *extra)
 349 {
 350         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 351
 352         freq->m = local->hw.conf.channel->center_freq;
 353         freq->e = 6;
 354
 355         return 0;
 356 }
 357
 358
 359 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 360                                     struct iw_request_info *info,
 361                                     struct iw_point *data, char *ssid)
 362 {
 363         struct ieee80211_sub_if_data *sdata;
 364         size_t len = data->length;
 365
 366         /* iwconfig uses nul termination in SSID.. */
 367         if (len > 0 && ssid[len - 1] == '\0')
 368                 len--;
 369
 370         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 371         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 372             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 373                 int ret;
 374                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 375                         if (len > IEEE80211_MAX_SSID_LEN)
 376                                 return -EINVAL;
 377                         memcpy(sdata->u.sta.ssid, ssid, len);
 378                         sdata->u.sta.ssid_len = len;
 379                         return 0;
 380                 }
 381                 if (data->flags)
 382                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 383                 else
 384                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 385                 ret = ieee80211_sta_set_ssid(dev, ssid, len);
 386                 if (ret)
 387                         return ret;
 388                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 389                 return 0;
 390         }
 391
 392         if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
 393                 memcpy(sdata->u.ap.ssid, ssid, len);
 394                 memset(sdata->u.ap.ssid + len, 0,
 395                        IEEE80211_MAX_SSID_LEN - len);
 396                 sdata->u.ap.ssid_len = len;
 397                 return ieee80211_if_config(dev);
 398         }
 399         return -EOPNOTSUPP;
 400 }
 401
 402
 403 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 404                                     struct iw_request_info *info,
 405                                     struct iw_point *data, char *ssid)
 406 {
 407         size_t len;
 408
 409         struct ieee80211_sub_if_data *sdata;
 410         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 411         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 412             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 413                 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
 414                 if (res == 0) {
 415                         data->length = len;
 416                         data->flags = 1;
 417                 } else
 418                         data->flags = 0;
 419                 return res;
 420         }
 421
 422         if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
 423                 len = sdata->u.ap.ssid_len;
 424                 if (len > IW_ESSID_MAX_SIZE)
 425                         len = IW_ESSID_MAX_SIZE;
 426                 memcpy(ssid, sdata->u.ap.ssid, len);
 427                 data->length = len;
 428                 data->flags = 1;
 429                 return 0;
 430         }
 431         return -EOPNOTSUPP;
 432 }
 433
 434
 435 static int ieee80211_ioctl_siwap(struct net_device *dev,
 436                                  struct iw_request_info *info,
 437                                  struct sockaddr *ap_addr, char *extra)
 438 {
 439         struct ieee80211_sub_if_data *sdata;
 440
 441         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 442         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 443             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 444                 int ret;
 445                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 446                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 447                                ETH_ALEN);
 448                         return 0;
 449                 }
 450                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 451                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 452                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 453                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 454                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 455                 else
 456                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 457                 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
 458                 if (ret)
 459                         return ret;
 460                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 461                 return 0;
 462         } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
 463                 /*
 464                  * If it is necessary to update the WDS peer address
 465                  * while the interface is running, then we need to do
 466                  * more work here, namely if it is running we need to
 467                  * add a new and remove the old STA entry, this is
 468                  * normally handled by _open() and _stop().
 469                  */
 470                 if (netif_running(dev))
 471                         return -EBUSY;
 472
 473                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 474                        ETH_ALEN);
 475
 476                 return 0;
 477         }
 478
 479         return -EOPNOTSUPP;
 480 }
 481
 482
 483 static int ieee80211_ioctl_giwap(struct net_device *dev,
 484                                  struct iw_request_info *info,
 485                                  struct sockaddr *ap_addr, char *extra)
 486 {
 487         struct ieee80211_sub_if_data *sdata;
 488
 489         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 490         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 491             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 492                 if (sdata->u.sta.state == IEEE80211_ASSOCIATED) {
 493                         ap_addr->sa_family = ARPHRD_ETHER;
 494                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 495                         return 0;
 496                 } else {
 497                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 498                         return 0;
 499                 }
 500         } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
 501                 ap_addr->sa_family = ARPHRD_ETHER;
 502                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 503                 return 0;
 504         }
 505
 506         return -EOPNOTSUPP;
 507 }
 508
 509
 510 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 511                                    struct iw_request_info *info,
 512                                    union iwreq_data *wrqu, char *extra)
 513 {
 514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 515         struct iw_scan_req *req = NULL;
 516         u8 *ssid = NULL;
 517         size_t ssid_len = 0;
 518
 519         if (!netif_running(dev))
 520                 return -ENETDOWN;
 521
 522         if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
 523             sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
 524             sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
 525             sdata->vif.type != IEEE80211_IF_TYPE_AP)
 526                 return -EOPNOTSUPP;
 527
 528         /* if SSID was specified explicitly then use that */
 529         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
 530             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 531                 req = (struct iw_scan_req *)extra;
 532                 ssid = req->essid;
 533                 ssid_len = req->essid_len;
 534         }
 535
 536         return ieee80211_sta_req_scan(dev, ssid, ssid_len);
 537 }
 538
 539
 540 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 541                                    struct iw_request_info *info,
 542                                    struct iw_point *data, char *extra)
 543 {
 544         int res;
 545         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 546
 547         if (local->sta_sw_scanning || local->sta_hw_scanning)
 548                 return -EAGAIN;
 549
 550         res = ieee80211_sta_scan_results(dev, extra, data->length);
 551         if (res >= 0) {
 552                 data->length = res;
 553                 return 0;
 554         }
 555         data->length = 0;
 556         return res;
 557 }
 558
 559
 560 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 561                                   struct iw_request_info *info,
 562                                   struct iw_param *rate, char *extra)
 563 {
 564         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 565         int i, err = -EINVAL;
 566         u32 target_rate = rate->value / 100000;
 567         struct ieee80211_sub_if_data *sdata;
 568         struct ieee80211_supported_band *sband;
 569
 570         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 571         if (!sdata->bss)
 572                 return -ENODEV;
 573
 574         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 575
 576         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 577          * target_rate = X, rate->fixed = 1 means only rate X
 578          * target_rate = X, rate->fixed = 0 means all rates <= X */
 579         sdata->bss->max_ratectrl_rateidx = -1;
 580         sdata->bss->force_unicast_rateidx = -1;
 581         if (rate->value < 0)
 582                 return 0;
 583
 584         for (i=0; i< sband->n_bitrates; i++) {
 585                 struct ieee80211_rate *brate = &sband->bitrates[i];
 586                 int this_rate = brate->bitrate;
 587
 588                 if (target_rate == this_rate) {
 589                         sdata->bss->max_ratectrl_rateidx = i;
 590                         if (rate->fixed)
 591                                 sdata->bss->force_unicast_rateidx = i;
 592                         err = 0;
 593                         break;
 594                 }
 595         }
 596         return err;
 597 }
 598
 599 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 600                                   struct iw_request_info *info,
 601                                   struct iw_param *rate, char *extra)
 602 {
 603         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 604         struct sta_info *sta;
 605         struct ieee80211_sub_if_data *sdata;
 606         struct ieee80211_supported_band *sband;
 607
 608         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 609
 610         if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
 611                 return -EOPNOTSUPP;
 612
 613         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 614
 615         rcu_read_lock();
 616
 617         sta = sta_info_get(local, sdata->u.sta.bssid);
 618
 619         if (sta && sta->txrate_idx < sband->n_bitrates)
 620                 rate->value = sband->bitrates[sta->txrate_idx].bitrate;
 621         else
 622                 rate->value = 0;
 623
 624         rcu_read_unlock();
 625
 626         if (!sta)
 627                 return -ENODEV;
 628
 629         rate->value *= 100000;
 630
 631         return 0;
 632 }
 633
 634 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 635                                       struct iw_request_info *info,
 636                                       union iwreq_data *data, char *extra)
 637 {
 638         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 639         bool need_reconfig = 0;
 640         int new_power_level;
 641
 642         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 643                 return -EINVAL;
 644         if (data->txpower.flags & IW_TXPOW_RANGE)
 645                 return -EINVAL;
 646
 647         if (data->txpower.fixed) {
 648                 new_power_level = data->txpower.value;
 649         } else {
 650                 /*
 651                  * Automatic power level. Use maximum power for the current
 652                  * channel. Should be part of rate control.
 653                  */
 654                 struct ieee80211_channel* chan = local->hw.conf.channel;
 655                 if (!chan)
 656                         return -EINVAL;
 657
 658                 new_power_level = chan->max_power;
 659         }
 660
 661         if (local->hw.conf.power_level != new_power_level) {
 662                 local->hw.conf.power_level = new_power_level;
 663                 need_reconfig = 1;
 664         }
 665
 666         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 667                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 668                 need_reconfig = 1;
 669                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 670         }
 671
 672         if (need_reconfig) {
 673                 ieee80211_hw_config(local);
 674                 /* The return value of hw_config is not of big interest here,
 675                  * as it doesn't say that it failed because of _this_ config
 676                  * change or something else. Ignore it. */
 677         }
 678
 679         return 0;
 680 }
 681
 682 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 683                                    struct iw_request_info *info,
 684                                    union iwreq_data *data, char *extra)
 685 {
 686         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 687
 688         data->txpower.fixed = 1;
 689         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 690         data->txpower.value = local->hw.conf.power_level;
 691         data->txpower.flags = IW_TXPOW_DBM;
 692
 693         return 0;
 694 }
 695
 696 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 697                                   struct iw_request_info *info,
 698                                   struct iw_param *rts, char *extra)
 699 {
 700         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 701
 702         if (rts->disabled)
 703                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 704         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 705                 return -EINVAL;
 706         else
 707                 local->rts_threshold = rts->value;
 708
 709         /* If the wlan card performs RTS/CTS in hardware/firmware,
 710          * configure it here */
 711
 712         if (local->ops->set_rts_threshold)
 713                 local->ops->set_rts_threshold(local_to_hw(local),
 714                                              local->rts_threshold);
 715
 716         return 0;
 717 }
 718
 719 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 720                                   struct iw_request_info *info,
 721                                   struct iw_param *rts, char *extra)
 722 {
 723         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 724
 725         rts->value = local->rts_threshold;
 726         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 727         rts->fixed = 1;
 728
 729         return 0;
 730 }
 731
 732
 733 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 734                                    struct iw_request_info *info,
 735                                    struct iw_param *frag, char *extra)
 736 {
 737         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 738
 739         if (frag->disabled)
 740                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 741         else if (frag->value < 256 ||
 742                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 743                 return -EINVAL;
 744         else {
 745                 /* Fragment length must be even, so strip LSB. */
 746                 local->fragmentation_threshold = frag->value & ~0x1;
 747         }
 748
 749         /* If the wlan card performs fragmentation in hardware/firmware,
 750          * configure it here */
 751
 752         if (local->ops->set_frag_threshold)
 753                 local->ops->set_frag_threshold(
 754                         local_to_hw(local),
 755                         local->fragmentation_threshold);
 756
 757         return 0;
 758 }
 759
 760 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 761                                    struct iw_request_info *info,
 762                                    struct iw_param *frag, char *extra)
 763 {
 764         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 765
 766         frag->value = local->fragmentation_threshold;
 767         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 768         frag->fixed = 1;
 769
 770         return 0;
 771 }
 772
 773
 774 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 775                                     struct iw_request_info *info,
 776                                     struct iw_param *retry, char *extra)
 777 {
 778         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 779
 780         if (retry->disabled ||
 781             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 782                 return -EINVAL;
 783
 784         if (retry->flags & IW_RETRY_MAX)
 785                 local->long_retry_limit = retry->value;
 786         else if (retry->flags & IW_RETRY_MIN)
 787                 local->short_retry_limit = retry->value;
 788         else {
 789                 local->long_retry_limit = retry->value;
 790                 local->short_retry_limit = retry->value;
 791         }
 792
 793         if (local->ops->set_retry_limit) {
 794                 return local->ops->set_retry_limit(
 795                         local_to_hw(local),
 796                         local->short_retry_limit,
 797                         local->long_retry_limit);
 798         }
 799
 800         return 0;
 801 }
 802
 803
 804 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 805                                     struct iw_request_info *info,
 806                                     struct iw_param *retry, char *extra)
 807 {
 808         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 809
 810         retry->disabled = 0;
 811         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 812                 /* first return min value, iwconfig will ask max value
 813                  * later if needed */
 814                 retry->flags |= IW_RETRY_LIMIT;
 815                 retry->value = local->short_retry_limit;
 816                 if (local->long_retry_limit != local->short_retry_limit)
 817                         retry->flags |= IW_RETRY_MIN;
 818                 return 0;
 819         }
 820         if (retry->flags & IW_RETRY_MAX) {
 821                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 822                 retry->value = local->long_retry_limit;
 823         }
 824
 825         return 0;
 826 }
 827
 828 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 829                                    struct iw_request_info *info,
 830                                    struct iw_point *data, char *extra)
 831 {
 832         struct ieee80211_sub_if_data *sdata;
 833         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 834
 835         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 836         if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
 837             sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
 838                 return -EINVAL;
 839
 840         switch (mlme->cmd) {
 841         case IW_MLME_DEAUTH:
 842                 /* TODO: mlme->addr.sa_data */
 843                 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
 844         case IW_MLME_DISASSOC:
 845                 /* TODO: mlme->addr.sa_data */
 846                 return ieee80211_sta_disassociate(dev, mlme->reason_code);
 847         default:
 848                 return -EOPNOTSUPP;
 849         }
 850 }
 851
 852
 853 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 854                                      struct iw_request_info *info,
 855                                      struct iw_point *erq, char *keybuf)
 856 {
 857         struct ieee80211_sub_if_data *sdata;
 858         int idx, i, alg = ALG_WEP;
 859         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 860         int remove = 0;
 861
 862         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 863
 864         idx = erq->flags & IW_ENCODE_INDEX;
 865         if (idx == 0) {
 866                 if (sdata->default_key)
 867                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 868                                 if (sdata->default_key == sdata->keys[i]) {
 869                                         idx = i;
 870                                         break;
 871                                 }
 872                         }
 873         } else if (idx < 1 || idx > 4)
 874                 return -EINVAL;
 875         else
 876                 idx--;
 877
 878         if (erq->flags & IW_ENCODE_DISABLED)
 879                 remove = 1;
 880         else if (erq->length == 0) {
 881                 /* No key data - just set the default TX key index */
 882                 ieee80211_set_default_key(sdata, idx);
 883                 return 0;
 884         }
 885
 886         return ieee80211_set_encryption(
 887                 dev, bcaddr,
 888                 idx, alg, remove,
 889                 !sdata->default_key,
 890                 keybuf, erq->length);
 891 }
 892
 893
 894 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 895                                      struct iw_request_info *info,
 896                                      struct iw_point *erq, char *key)
 897 {
 898         struct ieee80211_sub_if_data *sdata;
 899         int idx, i;
 900
 901         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 902
 903         idx = erq->flags & IW_ENCODE_INDEX;
 904         if (idx < 1 || idx > 4) {
 905                 idx = -1;
 906                 if (!sdata->default_key)
 907                         idx = 0;
 908                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 909                         if (sdata->default_key == sdata->keys[i]) {
 910                                 idx = i;
 911                                 break;
 912                         }
 913                 }
 914                 if (idx < 0)
 915                         return -EINVAL;
 916         } else
 917                 idx--;
 918
 919         erq->flags = idx + 1;
 920
 921         if (!sdata->keys[idx]) {
 922                 erq->length = 0;
 923                 erq->flags |= IW_ENCODE_DISABLED;
 924                 return 0;
 925         }
 926
 927         memcpy(key, sdata->keys[idx]->conf.key,
 928                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 929         erq->length = sdata->keys[idx]->conf.keylen;
 930         erq->flags |= IW_ENCODE_ENABLED;
 931
 932         return 0;
 933 }
 934
 935 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 936                                    struct iw_request_info *info,
 937                                    struct iw_param *data, char *extra)
 938 {
 939         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 940         int ret = 0;
 941
 942         switch (data->flags & IW_AUTH_INDEX) {
 943         case IW_AUTH_WPA_VERSION:
 944         case IW_AUTH_CIPHER_PAIRWISE:
 945         case IW_AUTH_CIPHER_GROUP:
 946         case IW_AUTH_WPA_ENABLED:
 947         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 948         case IW_AUTH_KEY_MGMT:
 949                 break;
 950         case IW_AUTH_DROP_UNENCRYPTED:
 951                 sdata->drop_unencrypted = !!data->value;
 952                 break;
 953         case IW_AUTH_PRIVACY_INVOKED:
 954                 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
 955                         ret = -EINVAL;
 956                 else {
 957                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 958                         /*
 959                          * Privacy invoked by wpa_supplicant, store the
 960                          * value and allow associating to a protected
 961                          * network without having a key up front.
 962                          */
 963                         if (data->value)
 964                                 sdata->u.sta.flags |=
 965                                         IEEE80211_STA_PRIVACY_INVOKED;
 966                 }
 967                 break;
 968         case IW_AUTH_80211_AUTH_ALG:
 969                 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 970                     sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
 971                         sdata->u.sta.auth_algs = data->value;
 972                 else
 973                         ret = -EOPNOTSUPP;
 974                 break;
 975         default:
 976                 ret = -EOPNOTSUPP;
 977                 break;
 978         }
 979         return ret;
 980 }
 981
 982 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 983 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 984 {
 985         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 986         struct iw_statistics *wstats = &local->wstats;
 987         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 988         struct sta_info *sta = NULL;
 989
 990         rcu_read_lock();
 991
 992         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 993             sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
 994                 sta = sta_info_get(local, sdata->u.sta.bssid);
 995         if (!sta) {
 996                 wstats->discard.fragment = 0;
 997                 wstats->discard.misc = 0;
 998                 wstats->qual.qual = 0;
 999                 wstats->qual.level = 0;
1000                 wstats->qual.noise = 0;
1001                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1002         } else {
1003                 wstats->qual.level = sta->last_rssi;
1004                 wstats->qual.qual = sta->last_signal;
1005                 wstats->qual.noise = sta->last_noise;
1006                 wstats->qual.updated = local->wstats_flags;
1007         }
1008
1009         rcu_read_unlock();
1010
1011         return wstats;
1012 }
1013
1014 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1015                                    struct iw_request_info *info,
1016                                    struct iw_param *data, char *extra)
1017 {
1018         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1019         int ret = 0;
1020
1021         switch (data->flags & IW_AUTH_INDEX) {
1022         case IW_AUTH_80211_AUTH_ALG:
1023                 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1024                     sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1025                         data->value = sdata->u.sta.auth_algs;
1026                 else
1027                         ret = -EOPNOTSUPP;
1028                 break;
1029         default:
1030                 ret = -EOPNOTSUPP;
1031                 break;
1032         }
1033         return ret;
1034 }
1035
1036
1037 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1038                                         struct iw_request_info *info,
1039                                         struct iw_point *erq, char *extra)
1040 {
1041         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1042         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1043         int uninitialized_var(alg), idx, i, remove = 0;
1044
1045         switch (ext->alg) {
1046         case IW_ENCODE_ALG_NONE:
1047                 remove = 1;
1048                 break;
1049         case IW_ENCODE_ALG_WEP:
1050                 alg = ALG_WEP;
1051                 break;
1052         case IW_ENCODE_ALG_TKIP:
1053                 alg = ALG_TKIP;
1054                 break;
1055         case IW_ENCODE_ALG_CCMP:
1056                 alg = ALG_CCMP;
1057                 break;
1058         default:
1059                 return -EOPNOTSUPP;
1060         }
1061
1062         if (erq->flags & IW_ENCODE_DISABLED)
1063                 remove = 1;
1064
1065         idx = erq->flags & IW_ENCODE_INDEX;
1066         if (idx < 1 || idx > 4) {
1067                 idx = -1;
1068                 if (!sdata->default_key)
1069                         idx = 0;
1070                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1071                         if (sdata->default_key == sdata->keys[i]) {
1072                                 idx = i;
1073                                 break;
1074                         }
1075                 }
1076                 if (idx < 0)
1077                         return -EINVAL;
1078         } else
1079                 idx--;
1080
1081         return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1082                                         remove,
1083                                         ext->ext_flags &
1084                                         IW_ENCODE_EXT_SET_TX_KEY,
1085                                         ext->key, ext->key_len);
1086 }
1087
1088
1089 /* Structures to export the Wireless Handlers */
1090
1091 static const iw_handler ieee80211_handler[] =
1092 {
1093         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1094         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1095         (iw_handler) NULL,                              /* SIOCSIWNWID */
1096         (iw_handler) NULL,                              /* SIOCGIWNWID */
1097         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1098         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1099         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1100         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1101         (iw_handler) NULL,                              /* SIOCSIWSENS */
1102         (iw_handler) NULL,                              /* SIOCGIWSENS */
1103         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1104         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1105         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1106         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1107         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1108         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1109         (iw_handler) NULL,                              /* SIOCSIWSPY */
1110         (iw_handler) NULL,                              /* SIOCGIWSPY */
1111         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1112         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1113         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1114         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1115         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1116         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1117         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1118         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1119         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1120         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1121         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1122         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1123         (iw_handler) NULL,                              /* -- hole -- */
1124         (iw_handler) NULL,                              /* -- hole -- */
1125         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1126         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1127         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1128         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1129         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1130         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1131         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1132         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1133         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1134         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1135         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1136         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1137         (iw_handler) NULL,                              /* SIOCSIWPOWER */
1138         (iw_handler) NULL,                              /* SIOCGIWPOWER */
1139         (iw_handler) NULL,                              /* -- hole -- */
1140         (iw_handler) NULL,                              /* -- hole -- */
1141         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1142         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1143         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1144         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1145         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1146         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1147         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1148         (iw_handler) NULL,                              /* -- hole -- */
1149 };
1150
1151 const struct iw_handler_def ieee80211_iw_handler_def =
1152 {
1153         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1154         .standard       = (iw_handler *) ieee80211_handler,
1155         .get_wireless_stats = ieee80211_get_wireless_stats,
1156 };