net/mac80211/ieee80211_ioctl.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 "ieee80211_rate.h"
  25 #include "wpa.h"
  26 #include "aes_ccm.h"
  27
  28
  29 static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
  30                                     int idx, int alg, int remove,
  31                                     int set_tx_key, const u8 *_key,
  32                                     size_t key_len)
  33 {
  34         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
  35         int ret = 0;
  36         struct sta_info *sta;
  37         struct ieee80211_key *key;
  38         struct ieee80211_sub_if_data *sdata;
  39
  40         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  41
  42         if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  43                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  44                        dev->name, idx);
  45                 return -EINVAL;
  46         }
  47
  48         if (is_broadcast_ether_addr(sta_addr)) {
  49                 sta = NULL;
  50                 key = sdata->keys[idx];
  51         } else {
  52                 set_tx_key = 0;
  53                 /*
  54                  * According to the standard, the key index of a pairwise
  55                  * key must be zero. However, some AP are broken when it
  56                  * comes to WEP key indices, so we work around this.
  57                  */
  58                 if (idx != 0 && alg != ALG_WEP) {
  59                         printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
  60                                "individual key\n", dev->name);
  61                         return -EINVAL;
  62                 }
  63
  64                 sta = sta_info_get(local, sta_addr);
  65                 if (!sta) {
  66 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
  67                         DECLARE_MAC_BUF(mac);
  68                         printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
  69                                "%s\n",
  70                                dev->name, print_mac(mac, sta_addr));
  71 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
  72
  73                         return -ENOENT;
  74                 }
  75
  76                 key = sta->key;
  77         }
  78
  79         if (remove) {
  80                 ieee80211_key_free(key);
  81                 key = NULL;
  82         } else {
  83                 /*
  84                  * Automatically frees any old key if present.
  85                  */
  86                 key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
  87                 if (!key) {
  88                         ret = -ENOMEM;
  89                         goto err_out;
  90                 }
  91         }
  92
  93         if (set_tx_key || (!sta && !sdata->default_key && key))
  94                 ieee80211_set_default_key(sdata, idx);
  95
  96         ret = 0;
  97  err_out:
  98         if (sta)
  99                 sta_info_put(sta);
 100         return ret;
 101 }
 102
 103 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 104                                     struct iw_request_info *info,
 105                                     struct iw_point *data, char *extra)
 106 {
 107         struct ieee80211_sub_if_data *sdata;
 108
 109         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110
 111         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 112                 return -EOPNOTSUPP;
 113
 114         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 115             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 116                 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
 117                 if (ret)
 118                         return ret;
 119                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 120                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 121                 return 0;
 122         }
 123
 124         return -EOPNOTSUPP;
 125 }
 126
 127 static int ieee80211_ioctl_giwname(struct net_device *dev,
 128                                    struct iw_request_info *info,
 129                                    char *name, char *extra)
 130 {
 131         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 132
 133         switch (local->hw.conf.phymode) {
 134         case MODE_IEEE80211A:
 135                 strcpy(name, "IEEE 802.11a");
 136                 break;
 137         case MODE_IEEE80211B:
 138                 strcpy(name, "IEEE 802.11b");
 139                 break;
 140         case MODE_IEEE80211G:
 141                 strcpy(name, "IEEE 802.11g");
 142                 break;
 143         default:
 144                 strcpy(name, "IEEE 802.11");
 145                 break;
 146         }
 147
 148         return 0;
 149 }
 150
 151
 152 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 153                                  struct iw_request_info *info,
 154                                  struct iw_point *data, char *extra)
 155 {
 156         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 157         struct iw_range *range = (struct iw_range *) extra;
 158         struct ieee80211_hw_mode *mode = NULL;
 159         int c = 0;
 160
 161         data->length = sizeof(struct iw_range);
 162         memset(range, 0, sizeof(struct iw_range));
 163
 164         range->we_version_compiled = WIRELESS_EXT;
 165         range->we_version_source = 21;
 166         range->retry_capa = IW_RETRY_LIMIT;
 167         range->retry_flags = IW_RETRY_LIMIT;
 168         range->min_retry = 0;
 169         range->max_retry = 255;
 170         range->min_rts = 0;
 171         range->max_rts = 2347;
 172         range->min_frag = 256;
 173         range->max_frag = 2346;
 174
 175         range->encoding_size[0] = 5;
 176         range->encoding_size[1] = 13;
 177         range->num_encoding_sizes = 2;
 178         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 179
 180         range->max_qual.qual = local->hw.max_signal;
 181         range->max_qual.level = local->hw.max_rssi;
 182         range->max_qual.noise = local->hw.max_noise;
 183         range->max_qual.updated = local->wstats_flags;
 184
 185         range->avg_qual.qual = local->hw.max_signal/2;
 186         range->avg_qual.level = 0;
 187         range->avg_qual.noise = 0;
 188         range->avg_qual.updated = local->wstats_flags;
 189
 190         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 191                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 192
 193         list_for_each_entry(mode, &local->modes_list, list) {
 194                 int i = 0;
 195
 196                 if (!(local->enabled_modes & (1 << mode->mode)) ||
 197                     (local->hw_modes & local->enabled_modes &
 198                      (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
 199                         continue;
 200
 201                 while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
 202                         struct ieee80211_channel *chan = &mode->channels[i];
 203
 204                         if (chan->flag & IEEE80211_CHAN_W_SCAN) {
 205                                 range->freq[c].i = chan->chan;
 206                                 range->freq[c].m = chan->freq * 100000;
 207                                 range->freq[c].e = 1;
 208                                 c++;
 209                         }
 210                         i++;
 211                 }
 212         }
 213         range->num_channels = c;
 214         range->num_frequency = c;
 215
 216         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 217         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
 218         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 219         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 220
 221         return 0;
 222 }
 223
 224
 225 static int ieee80211_ioctl_siwmode(struct net_device *dev,
 226                                    struct iw_request_info *info,
 227                                    __u32 *mode, char *extra)
 228 {
 229         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 230         int type;
 231
 232         if (sdata->type == IEEE80211_IF_TYPE_VLAN)
 233                 return -EOPNOTSUPP;
 234
 235         switch (*mode) {
 236         case IW_MODE_INFRA:
 237                 type = IEEE80211_IF_TYPE_STA;
 238                 break;
 239         case IW_MODE_ADHOC:
 240                 type = IEEE80211_IF_TYPE_IBSS;
 241                 break;
 242         case IW_MODE_MONITOR:
 243                 type = IEEE80211_IF_TYPE_MNTR;
 244                 break;
 245         default:
 246                 return -EINVAL;
 247         }
 248
 249         if (type == sdata->type)
 250                 return 0;
 251         if (netif_running(dev))
 252                 return -EBUSY;
 253
 254         ieee80211_if_reinit(dev);
 255         ieee80211_if_set_type(dev, type);
 256
 257         return 0;
 258 }
 259
 260
 261 static int ieee80211_ioctl_giwmode(struct net_device *dev,
 262                                    struct iw_request_info *info,
 263                                    __u32 *mode, char *extra)
 264 {
 265         struct ieee80211_sub_if_data *sdata;
 266
 267         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 268         switch (sdata->type) {
 269         case IEEE80211_IF_TYPE_AP:
 270                 *mode = IW_MODE_MASTER;
 271                 break;
 272         case IEEE80211_IF_TYPE_STA:
 273                 *mode = IW_MODE_INFRA;
 274                 break;
 275         case IEEE80211_IF_TYPE_IBSS:
 276                 *mode = IW_MODE_ADHOC;
 277                 break;
 278         case IEEE80211_IF_TYPE_MNTR:
 279                 *mode = IW_MODE_MONITOR;
 280                 break;
 281         case IEEE80211_IF_TYPE_WDS:
 282                 *mode = IW_MODE_REPEAT;
 283                 break;
 284         case IEEE80211_IF_TYPE_VLAN:
 285                 *mode = IW_MODE_SECOND;         /* FIXME */
 286                 break;
 287         default:
 288                 *mode = IW_MODE_AUTO;
 289                 break;
 290         }
 291         return 0;
 292 }
 293
 294 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
 295 {
 296         struct ieee80211_hw_mode *mode;
 297         int c, set = 0;
 298         int ret = -EINVAL;
 299
 300         list_for_each_entry(mode, &local->modes_list, list) {
 301                 if (!(local->enabled_modes & (1 << mode->mode)))
 302                         continue;
 303                 for (c = 0; c < mode->num_channels; c++) {
 304                         struct ieee80211_channel *chan = &mode->channels[c];
 305                         if (chan->flag & IEEE80211_CHAN_W_SCAN &&
 306                             ((chan->chan == channel) || (chan->freq == freq))) {
 307                                 local->oper_channel = chan;
 308                                 local->oper_hw_mode = mode;
 309                                 set++;
 310                         }
 311                 }
 312         }
 313
 314         if (set) {
 315                 if (local->sta_scanning)
 316                         ret = 0;
 317                 else
 318                         ret = ieee80211_hw_config(local);
 319
 320                 rate_control_clear(local);
 321         }
 322
 323         return ret;
 324 }
 325
 326 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 327                                    struct iw_request_info *info,
 328                                    struct iw_freq *freq, char *extra)
 329 {
 330         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 331         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 332
 333         if (sdata->type == IEEE80211_IF_TYPE_STA)
 334                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 335
 336         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 337         if (freq->e == 0) {
 338                 if (freq->m < 0) {
 339                         if (sdata->type == IEEE80211_IF_TYPE_STA)
 340                                 sdata->u.sta.flags |=
 341                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 342                         return 0;
 343                 } else
 344                         return ieee80211_set_channel(local, freq->m, -1);
 345         } else {
 346                 int i, div = 1000000;
 347                 for (i = 0; i < freq->e; i++)
 348                         div /= 10;
 349                 if (div > 0)
 350                         return ieee80211_set_channel(local, -1, freq->m / div);
 351                 else
 352                         return -EINVAL;
 353         }
 354 }
 355
 356
 357 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 358                                    struct iw_request_info *info,
 359                                    struct iw_freq *freq, char *extra)
 360 {
 361         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 362
 363         /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
 364          * driver for the current channel with firmware-based management */
 365
 366         freq->m = local->hw.conf.freq;
 367         freq->e = 6;
 368
 369         return 0;
 370 }
 371
 372
 373 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 374                                     struct iw_request_info *info,
 375                                     struct iw_point *data, char *ssid)
 376 {
 377         struct ieee80211_sub_if_data *sdata;
 378         size_t len = data->length;
 379
 380         /* iwconfig uses nul termination in SSID.. */
 381         if (len > 0 && ssid[len - 1] == '\0')
 382                 len--;
 383
 384         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 385         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 386             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 387                 int ret;
 388                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 389                         if (len > IEEE80211_MAX_SSID_LEN)
 390                                 return -EINVAL;
 391                         memcpy(sdata->u.sta.ssid, ssid, len);
 392                         sdata->u.sta.ssid_len = len;
 393                         return 0;
 394                 }
 395                 if (data->flags)
 396                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 397                 else
 398                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 399                 ret = ieee80211_sta_set_ssid(dev, ssid, len);
 400                 if (ret)
 401                         return ret;
 402                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 403                 return 0;
 404         }
 405
 406         if (sdata->type == IEEE80211_IF_TYPE_AP) {
 407                 memcpy(sdata->u.ap.ssid, ssid, len);
 408                 memset(sdata->u.ap.ssid + len, 0,
 409                        IEEE80211_MAX_SSID_LEN - len);
 410                 sdata->u.ap.ssid_len = len;
 411                 return ieee80211_if_config(dev);
 412         }
 413         return -EOPNOTSUPP;
 414 }
 415
 416
 417 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 418                                     struct iw_request_info *info,
 419                                     struct iw_point *data, char *ssid)
 420 {
 421         size_t len;
 422
 423         struct ieee80211_sub_if_data *sdata;
 424         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 425         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 426             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 427                 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
 428                 if (res == 0) {
 429                         data->length = len;
 430                         data->flags = 1;
 431                 } else
 432                         data->flags = 0;
 433                 return res;
 434         }
 435
 436         if (sdata->type == IEEE80211_IF_TYPE_AP) {
 437                 len = sdata->u.ap.ssid_len;
 438                 if (len > IW_ESSID_MAX_SIZE)
 439                         len = IW_ESSID_MAX_SIZE;
 440                 memcpy(ssid, sdata->u.ap.ssid, len);
 441                 data->length = len;
 442                 data->flags = 1;
 443                 return 0;
 444         }
 445         return -EOPNOTSUPP;
 446 }
 447
 448
 449 static int ieee80211_ioctl_siwap(struct net_device *dev,
 450                                  struct iw_request_info *info,
 451                                  struct sockaddr *ap_addr, char *extra)
 452 {
 453         struct ieee80211_sub_if_data *sdata;
 454
 455         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 456         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 457             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 458                 int ret;
 459                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 460                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 461                                ETH_ALEN);
 462                         return 0;
 463                 }
 464                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 465                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 466                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 467                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 468                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 469                 else
 470                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 471                 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
 472                 if (ret)
 473                         return ret;
 474                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 475                 return 0;
 476         } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
 477                 if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 478                            ETH_ALEN) == 0)
 479                         return 0;
 480                 return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
 481         }
 482
 483         return -EOPNOTSUPP;
 484 }
 485
 486
 487 static int ieee80211_ioctl_giwap(struct net_device *dev,
 488                                  struct iw_request_info *info,
 489                                  struct sockaddr *ap_addr, char *extra)
 490 {
 491         struct ieee80211_sub_if_data *sdata;
 492
 493         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 494         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 495             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 496                 ap_addr->sa_family = ARPHRD_ETHER;
 497                 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 498                 return 0;
 499         } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
 500                 ap_addr->sa_family = ARPHRD_ETHER;
 501                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 502                 return 0;
 503         }
 504
 505         return -EOPNOTSUPP;
 506 }
 507
 508
 509 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 510                                    struct iw_request_info *info,
 511                                    struct iw_point *data, char *extra)
 512 {
 513         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 515         u8 *ssid = NULL;
 516         size_t ssid_len = 0;
 517
 518         if (!netif_running(dev))
 519                 return -ENETDOWN;
 520
 521         switch (sdata->type) {
 522         case IEEE80211_IF_TYPE_STA:
 523         case IEEE80211_IF_TYPE_IBSS:
 524                 if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
 525                         ssid = sdata->u.sta.ssid;
 526                         ssid_len = sdata->u.sta.ssid_len;
 527                 }
 528                 break;
 529         case IEEE80211_IF_TYPE_AP:
 530                 if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
 531                         ssid = sdata->u.ap.ssid;
 532                         ssid_len = sdata->u.ap.ssid_len;
 533                 }
 534                 break;
 535         default:
 536                 return -EOPNOTSUPP;
 537         }
 538
 539         return ieee80211_sta_req_scan(dev, ssid, ssid_len);
 540 }
 541
 542
 543 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 544                                    struct iw_request_info *info,
 545                                    struct iw_point *data, char *extra)
 546 {
 547         int res;
 548         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 549         if (local->sta_scanning)
 550                 return -EAGAIN;
 551         res = ieee80211_sta_scan_results(dev, extra, data->length);
 552         if (res >= 0) {
 553                 data->length = res;
 554                 return 0;
 555         }
 556         data->length = 0;
 557         return res;
 558 }
 559
 560
 561 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 562                                   struct iw_request_info *info,
 563                                   struct iw_param *rate, char *extra)
 564 {
 565         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 566         struct ieee80211_hw_mode *mode;
 567         int i;
 568         u32 target_rate = rate->value / 100000;
 569         struct ieee80211_sub_if_data *sdata;
 570
 571         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 572         if (!sdata->bss)
 573                 return -ENODEV;
 574         mode = local->oper_hw_mode;
 575         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 576          * target_rate = X, rate->fixed = 1 means only rate X
 577          * target_rate = X, rate->fixed = 0 means all rates <= X */
 578         sdata->bss->max_ratectrl_rateidx = -1;
 579         sdata->bss->force_unicast_rateidx = -1;
 580         if (rate->value < 0)
 581                 return 0;
 582         for (i=0; i< mode->num_rates; i++) {
 583                 struct ieee80211_rate *rates = &mode->rates[i];
 584                 int this_rate = rates->rate;
 585
 586                 if (target_rate == this_rate) {
 587                         sdata->bss->max_ratectrl_rateidx = i;
 588                         if (rate->fixed)
 589                                 sdata->bss->force_unicast_rateidx = i;
 590                         break;
 591                 }
 592         }
 593         return 0;
 594 }
 595
 596 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 597                                   struct iw_request_info *info,
 598                                   struct iw_param *rate, char *extra)
 599 {
 600         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 601         struct sta_info *sta;
 602         struct ieee80211_sub_if_data *sdata;
 603
 604         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 605         if (sdata->type == IEEE80211_IF_TYPE_STA)
 606                 sta = sta_info_get(local, sdata->u.sta.bssid);
 607         else
 608                 return -EOPNOTSUPP;
 609         if (!sta)
 610                 return -ENODEV;
 611         if (sta->txrate < local->oper_hw_mode->num_rates)
 612                 rate->value = local->oper_hw_mode->rates[sta->txrate].rate * 100000;
 613         else
 614                 rate->value = 0;
 615         sta_info_put(sta);
 616         return 0;
 617 }
 618
 619 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 620                                       struct iw_request_info *info,
 621                                       union iwreq_data *data, char *extra)
 622 {
 623         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 624         bool need_reconfig = 0;
 625
 626         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 627                 return -EINVAL;
 628         if (data->txpower.flags & IW_TXPOW_RANGE)
 629                 return -EINVAL;
 630         if (!data->txpower.fixed)
 631                 return -EINVAL;
 632
 633         if (local->hw.conf.power_level != data->txpower.value) {
 634                 local->hw.conf.power_level = data->txpower.value;
 635                 need_reconfig = 1;
 636         }
 637         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 638                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 639                 need_reconfig = 1;
 640         }
 641         if (need_reconfig) {
 642                 ieee80211_hw_config(local);
 643                 /* The return value of hw_config is not of big interest here,
 644                  * as it doesn't say that it failed because of _this_ config
 645                  * change or something else. Ignore it. */
 646         }
 647
 648         return 0;
 649 }
 650
 651 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 652                                    struct iw_request_info *info,
 653                                    union iwreq_data *data, char *extra)
 654 {
 655         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 656
 657         data->txpower.fixed = 1;
 658         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 659         data->txpower.value = local->hw.conf.power_level;
 660         data->txpower.flags = IW_TXPOW_DBM;
 661
 662         return 0;
 663 }
 664
 665 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 666                                   struct iw_request_info *info,
 667                                   struct iw_param *rts, char *extra)
 668 {
 669         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 670
 671         if (rts->disabled)
 672                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 673         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 674                 return -EINVAL;
 675         else
 676                 local->rts_threshold = rts->value;
 677
 678         /* If the wlan card performs RTS/CTS in hardware/firmware,
 679          * configure it here */
 680
 681         if (local->ops->set_rts_threshold)
 682                 local->ops->set_rts_threshold(local_to_hw(local),
 683                                              local->rts_threshold);
 684
 685         return 0;
 686 }
 687
 688 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 689                                   struct iw_request_info *info,
 690                                   struct iw_param *rts, char *extra)
 691 {
 692         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 693
 694         rts->value = local->rts_threshold;
 695         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 696         rts->fixed = 1;
 697
 698         return 0;
 699 }
 700
 701
 702 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 703                                    struct iw_request_info *info,
 704                                    struct iw_param *frag, char *extra)
 705 {
 706         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 707
 708         if (frag->disabled)
 709                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 710         else if (frag->value < 256 ||
 711                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 712                 return -EINVAL;
 713         else {
 714                 /* Fragment length must be even, so strip LSB. */
 715                 local->fragmentation_threshold = frag->value & ~0x1;
 716         }
 717
 718         /* If the wlan card performs fragmentation in hardware/firmware,
 719          * configure it here */
 720
 721         if (local->ops->set_frag_threshold)
 722                 local->ops->set_frag_threshold(
 723                         local_to_hw(local),
 724                         local->fragmentation_threshold);
 725
 726         return 0;
 727 }
 728
 729 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 730                                    struct iw_request_info *info,
 731                                    struct iw_param *frag, char *extra)
 732 {
 733         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 734
 735         frag->value = local->fragmentation_threshold;
 736         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 737         frag->fixed = 1;
 738
 739         return 0;
 740 }
 741
 742
 743 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 744                                     struct iw_request_info *info,
 745                                     struct iw_param *retry, char *extra)
 746 {
 747         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 748
 749         if (retry->disabled ||
 750             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 751                 return -EINVAL;
 752
 753         if (retry->flags & IW_RETRY_MAX)
 754                 local->long_retry_limit = retry->value;
 755         else if (retry->flags & IW_RETRY_MIN)
 756                 local->short_retry_limit = retry->value;
 757         else {
 758                 local->long_retry_limit = retry->value;
 759                 local->short_retry_limit = retry->value;
 760         }
 761
 762         if (local->ops->set_retry_limit) {
 763                 return local->ops->set_retry_limit(
 764                         local_to_hw(local),
 765                         local->short_retry_limit,
 766                         local->long_retry_limit);
 767         }
 768
 769         return 0;
 770 }
 771
 772
 773 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 774                                     struct iw_request_info *info,
 775                                     struct iw_param *retry, char *extra)
 776 {
 777         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 778
 779         retry->disabled = 0;
 780         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 781                 /* first return min value, iwconfig will ask max value
 782                  * later if needed */
 783                 retry->flags |= IW_RETRY_LIMIT;
 784                 retry->value = local->short_retry_limit;
 785                 if (local->long_retry_limit != local->short_retry_limit)
 786                         retry->flags |= IW_RETRY_MIN;
 787                 return 0;
 788         }
 789         if (retry->flags & IW_RETRY_MAX) {
 790                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 791                 retry->value = local->long_retry_limit;
 792         }
 793
 794         return 0;
 795 }
 796
 797 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 798                                    struct iw_request_info *info,
 799                                    struct iw_point *data, char *extra)
 800 {
 801         struct ieee80211_sub_if_data *sdata;
 802         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 803
 804         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 805         if (sdata->type != IEEE80211_IF_TYPE_STA &&
 806             sdata->type != IEEE80211_IF_TYPE_IBSS)
 807                 return -EINVAL;
 808
 809         switch (mlme->cmd) {
 810         case IW_MLME_DEAUTH:
 811                 /* TODO: mlme->addr.sa_data */
 812                 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
 813         case IW_MLME_DISASSOC:
 814                 /* TODO: mlme->addr.sa_data */
 815                 return ieee80211_sta_disassociate(dev, mlme->reason_code);
 816         default:
 817                 return -EOPNOTSUPP;
 818         }
 819 }
 820
 821
 822 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 823                                      struct iw_request_info *info,
 824                                      struct iw_point *erq, char *keybuf)
 825 {
 826         struct ieee80211_sub_if_data *sdata;
 827         int idx, i, alg = ALG_WEP;
 828         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 829         int remove = 0;
 830
 831         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 832
 833         idx = erq->flags & IW_ENCODE_INDEX;
 834         if (idx == 0) {
 835                 if (sdata->default_key)
 836                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 837                                 if (sdata->default_key == sdata->keys[i]) {
 838                                         idx = i;
 839                                         break;
 840                                 }
 841                         }
 842         } else if (idx < 1 || idx > 4)
 843                 return -EINVAL;
 844         else
 845                 idx--;
 846
 847         if (erq->flags & IW_ENCODE_DISABLED)
 848                 remove = 1;
 849         else if (erq->length == 0) {
 850                 /* No key data - just set the default TX key index */
 851                 ieee80211_set_default_key(sdata, idx);
 852                 return 0;
 853         }
 854
 855         return ieee80211_set_encryption(
 856                 dev, bcaddr,
 857                 idx, alg, remove,
 858                 !sdata->default_key,
 859                 keybuf, erq->length);
 860 }
 861
 862
 863 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 864                                      struct iw_request_info *info,
 865                                      struct iw_point *erq, char *key)
 866 {
 867         struct ieee80211_sub_if_data *sdata;
 868         int idx, i;
 869
 870         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 871
 872         idx = erq->flags & IW_ENCODE_INDEX;
 873         if (idx < 1 || idx > 4) {
 874                 idx = -1;
 875                 if (!sdata->default_key)
 876                         idx = 0;
 877                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 878                         if (sdata->default_key == sdata->keys[i]) {
 879                                 idx = i;
 880                                 break;
 881                         }
 882                 }
 883                 if (idx < 0)
 884                         return -EINVAL;
 885         } else
 886                 idx--;
 887
 888         erq->flags = idx + 1;
 889
 890         if (!sdata->keys[idx]) {
 891                 erq->length = 0;
 892                 erq->flags |= IW_ENCODE_DISABLED;
 893                 return 0;
 894         }
 895
 896         memcpy(key, sdata->keys[idx]->conf.key,
 897                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 898         erq->length = sdata->keys[idx]->conf.keylen;
 899         erq->flags |= IW_ENCODE_ENABLED;
 900
 901         return 0;
 902 }
 903
 904 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 905                                    struct iw_request_info *info,
 906                                    struct iw_param *data, char *extra)
 907 {
 908         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 909         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 910         int ret = 0;
 911
 912         switch (data->flags & IW_AUTH_INDEX) {
 913         case IW_AUTH_WPA_VERSION:
 914         case IW_AUTH_CIPHER_PAIRWISE:
 915         case IW_AUTH_CIPHER_GROUP:
 916         case IW_AUTH_WPA_ENABLED:
 917         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 918                 break;
 919         case IW_AUTH_KEY_MGMT:
 920                 if (sdata->type != IEEE80211_IF_TYPE_STA)
 921                         ret = -EINVAL;
 922                 else {
 923                         /*
 924                          * Key management was set by wpa_supplicant,
 925                          * we only need this to associate to a network
 926                          * that has privacy enabled regardless of not
 927                          * having a key.
 928                          */
 929                         sdata->u.sta.key_management_enabled = !!data->value;
 930                 }
 931                 break;
 932         case IW_AUTH_80211_AUTH_ALG:
 933                 if (sdata->type == IEEE80211_IF_TYPE_STA ||
 934                     sdata->type == IEEE80211_IF_TYPE_IBSS)
 935                         sdata->u.sta.auth_algs = data->value;
 936                 else
 937                         ret = -EOPNOTSUPP;
 938                 break;
 939         case IW_AUTH_PRIVACY_INVOKED:
 940                 if (local->ops->set_privacy_invoked)
 941                         ret = local->ops->set_privacy_invoked(
 942                                         local_to_hw(local), data->value);
 943                 break;
 944         default:
 945                 ret = -EOPNOTSUPP;
 946                 break;
 947         }
 948         return ret;
 949 }
 950
 951 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 952 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 953 {
 954         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 955         struct iw_statistics *wstats = &local->wstats;
 956         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 957         struct sta_info *sta = NULL;
 958
 959         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 960             sdata->type == IEEE80211_IF_TYPE_IBSS)
 961                 sta = sta_info_get(local, sdata->u.sta.bssid);
 962         if (!sta) {
 963                 wstats->discard.fragment = 0;
 964                 wstats->discard.misc = 0;
 965                 wstats->qual.qual = 0;
 966                 wstats->qual.level = 0;
 967                 wstats->qual.noise = 0;
 968                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 969         } else {
 970                 wstats->qual.level = sta->last_rssi;
 971                 wstats->qual.qual = sta->last_signal;
 972                 wstats->qual.noise = sta->last_noise;
 973                 wstats->qual.updated = local->wstats_flags;
 974                 sta_info_put(sta);
 975         }
 976         return wstats;
 977 }
 978
 979 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 980                                    struct iw_request_info *info,
 981                                    struct iw_param *data, char *extra)
 982 {
 983         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 984         int ret = 0;
 985
 986         switch (data->flags & IW_AUTH_INDEX) {
 987         case IW_AUTH_80211_AUTH_ALG:
 988                 if (sdata->type == IEEE80211_IF_TYPE_STA ||
 989                     sdata->type == IEEE80211_IF_TYPE_IBSS)
 990                         data->value = sdata->u.sta.auth_algs;
 991                 else
 992                         ret = -EOPNOTSUPP;
 993                 break;
 994         default:
 995                 ret = -EOPNOTSUPP;
 996                 break;
 997         }
 998         return ret;
 999 }
1000
1001
1002 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1003                                         struct iw_request_info *info,
1004                                         struct iw_point *erq, char *extra)
1005 {
1006         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1007         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1008         int uninitialized_var(alg), idx, i, remove = 0;
1009
1010         switch (ext->alg) {
1011         case IW_ENCODE_ALG_NONE:
1012                 remove = 1;
1013                 break;
1014         case IW_ENCODE_ALG_WEP:
1015                 alg = ALG_WEP;
1016                 break;
1017         case IW_ENCODE_ALG_TKIP:
1018                 alg = ALG_TKIP;
1019                 break;
1020         case IW_ENCODE_ALG_CCMP:
1021                 alg = ALG_CCMP;
1022                 break;
1023         default:
1024                 return -EOPNOTSUPP;
1025         }
1026
1027         if (erq->flags & IW_ENCODE_DISABLED)
1028                 remove = 1;
1029
1030         idx = erq->flags & IW_ENCODE_INDEX;
1031         if (idx < 1 || idx > 4) {
1032                 idx = -1;
1033                 if (!sdata->default_key)
1034                         idx = 0;
1035                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1036                         if (sdata->default_key == sdata->keys[i]) {
1037                                 idx = i;
1038                                 break;
1039                         }
1040                 }
1041                 if (idx < 0)
1042                         return -EINVAL;
1043         } else
1044                 idx--;
1045
1046         return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1047                                         remove,
1048                                         ext->ext_flags &
1049                                         IW_ENCODE_EXT_SET_TX_KEY,
1050                                         ext->key, ext->key_len);
1051 }
1052
1053
1054 /* Structures to export the Wireless Handlers */
1055
1056 static const iw_handler ieee80211_handler[] =
1057 {
1058         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1059         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1060         (iw_handler) NULL,                              /* SIOCSIWNWID */
1061         (iw_handler) NULL,                              /* SIOCGIWNWID */
1062         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1063         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1064         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1065         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1066         (iw_handler) NULL,                              /* SIOCSIWSENS */
1067         (iw_handler) NULL,                              /* SIOCGIWSENS */
1068         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1069         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1070         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1071         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1072         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1073         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1074         (iw_handler) NULL,                              /* SIOCSIWSPY */
1075         (iw_handler) NULL,                              /* SIOCGIWSPY */
1076         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1077         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1078         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1079         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1080         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1081         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1082         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1083         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1084         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1085         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1086         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1087         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1088         (iw_handler) NULL,                              /* -- hole -- */
1089         (iw_handler) NULL,                              /* -- hole -- */
1090         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1091         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1092         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1093         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1094         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1095         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1096         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1097         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1098         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1099         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1100         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1101         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1102         (iw_handler) NULL,                              /* SIOCSIWPOWER */
1103         (iw_handler) NULL,                              /* SIOCGIWPOWER */
1104         (iw_handler) NULL,                              /* -- hole -- */
1105         (iw_handler) NULL,                              /* -- hole -- */
1106         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1107         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1108         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1109         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1110         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1111         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1112         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1113         (iw_handler) NULL,                              /* -- hole -- */
1114 };
1115
1116 const struct iw_handler_def ieee80211_iw_handler_def =
1117 {
1118         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1119         .standard       = (iw_handler *) ieee80211_handler,
1120         .get_wireless_stats = ieee80211_get_wireless_stats,
1121 };