err.no Git - linux-2.6/blob - 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_led.h"
  25 #include "ieee80211_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
  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 (remove) {
  49                 if (is_broadcast_ether_addr(sta_addr)) {
  50                         key = sdata->keys[idx];
  51                 } else {
  52                         sta = sta_info_get(local, sta_addr);
  53                         if (!sta)
  54                                 return -ENOENT;
  55                         key = sta->key;
  56                 }
  57
  58                 if (!key)
  59                         return -ENOENT;
  60
  61                 ieee80211_key_free(key);
  62                 return 0;
  63         } else {
  64                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
  65                 if (!key)
  66                         return -ENOMEM;
  67
  68                 sta = NULL;
  69
  70                 if (!is_broadcast_ether_addr(sta_addr)) {
  71                         set_tx_key = 0;
  72                         /*
  73                          * According to the standard, the key index of a
  74                          * pairwise key must be zero. However, some AP are
  75                          * broken when it comes to WEP key indices, so we
  76                          * work around this.
  77                          */
  78                         if (idx != 0 && alg != ALG_WEP) {
  79                                 ieee80211_key_free(key);
  80                                 return -EINVAL;
  81                         }
  82
  83                         sta = sta_info_get(local, sta_addr);
  84                         if (!sta) {
  85                                 ieee80211_key_free(key);
  86                                 return -ENOENT;
  87                         }
  88                 }
  89
  90                 ieee80211_key_link(key, sdata, sta);
  91
  92                 if (set_tx_key || (!sta && !sdata->default_key && key))
  93                         ieee80211_set_default_key(sdata, idx);
  94         }
  95
  96         return 0;
  97 }
  98
  99 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 100                                     struct iw_request_info *info,
 101                                     struct iw_point *data, char *extra)
 102 {
 103         struct ieee80211_sub_if_data *sdata;
 104
 105         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 106
 107         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 108                 return -EOPNOTSUPP;
 109
 110         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 111             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 112                 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
 113                 if (ret)
 114                         return ret;
 115                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 116                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 117                 return 0;
 118         }
 119
 120         return -EOPNOTSUPP;
 121 }
 122
 123 static int ieee80211_ioctl_giwname(struct net_device *dev,
 124                                    struct iw_request_info *info,
 125                                    char *name, char *extra)
 126 {
 127         strcpy(name, "IEEE 802.11");
 128
 129         return 0;
 130 }
 131
 132
 133 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 134                                  struct iw_request_info *info,
 135                                  struct iw_point *data, char *extra)
 136 {
 137         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 138         struct iw_range *range = (struct iw_range *) extra;
 139         enum ieee80211_band band;
 140         int c = 0;
 141
 142         data->length = sizeof(struct iw_range);
 143         memset(range, 0, sizeof(struct iw_range));
 144
 145         range->we_version_compiled = WIRELESS_EXT;
 146         range->we_version_source = 21;
 147         range->retry_capa = IW_RETRY_LIMIT;
 148         range->retry_flags = IW_RETRY_LIMIT;
 149         range->min_retry = 0;
 150         range->max_retry = 255;
 151         range->min_rts = 0;
 152         range->max_rts = 2347;
 153         range->min_frag = 256;
 154         range->max_frag = 2346;
 155
 156         range->encoding_size[0] = 5;
 157         range->encoding_size[1] = 13;
 158         range->num_encoding_sizes = 2;
 159         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 160
 161         range->max_qual.qual = local->hw.max_signal;
 162         range->max_qual.level = local->hw.max_rssi;
 163         range->max_qual.noise = local->hw.max_noise;
 164         range->max_qual.updated = local->wstats_flags;
 165
 166         range->avg_qual.qual = local->hw.max_signal/2;
 167         range->avg_qual.level = 0;
 168         range->avg_qual.noise = 0;
 169         range->avg_qual.updated = local->wstats_flags;
 170
 171         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 172                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 173
 174
 175         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 176                 int i;
 177                 struct ieee80211_supported_band *sband;
 178
 179                 sband = local->hw.wiphy->bands[band];
 180
 181                 if (!sband)
 182                         continue;
 183
 184                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 185                         struct ieee80211_channel *chan = &sband->channels[i];
 186
 187                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 188                                 range->freq[c].i =
 189                                         ieee80211_frequency_to_channel(
 190                                                 chan->center_freq);
 191                                 range->freq[c].m = chan->center_freq;
 192                                 range->freq[c].e = 6;
 193                                 c++;
 194                         }
 195                 }
 196         }
 197         range->num_channels = c;
 198         range->num_frequency = c;
 199
 200         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 201         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
 202         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 203         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 204
 205         range->scan_capa |= IW_SCAN_CAPA_ESSID;
 206
 207         return 0;
 208 }
 209
 210
 211 static int ieee80211_ioctl_siwmode(struct net_device *dev,
 212                                    struct iw_request_info *info,
 213                                    __u32 *mode, char *extra)
 214 {
 215         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 216         int type;
 217
 218         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 219                 return -EOPNOTSUPP;
 220
 221         switch (*mode) {
 222         case IW_MODE_INFRA:
 223                 type = IEEE80211_IF_TYPE_STA;
 224                 break;
 225         case IW_MODE_ADHOC:
 226                 type = IEEE80211_IF_TYPE_IBSS;
 227                 break;
 228         case IW_MODE_MONITOR:
 229                 type = IEEE80211_IF_TYPE_MNTR;
 230                 break;
 231         default:
 232                 return -EINVAL;
 233         }
 234
 235         if (type == sdata->vif.type)
 236                 return 0;
 237         if (netif_running(dev))
 238                 return -EBUSY;
 239
 240         ieee80211_if_reinit(dev);
 241         ieee80211_if_set_type(dev, type);
 242
 243         return 0;
 244 }
 245
 246
 247 static int ieee80211_ioctl_giwmode(struct net_device *dev,
 248                                    struct iw_request_info *info,
 249                                    __u32 *mode, char *extra)
 250 {
 251         struct ieee80211_sub_if_data *sdata;
 252
 253         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 254         switch (sdata->vif.type) {
 255         case IEEE80211_IF_TYPE_AP:
 256                 *mode = IW_MODE_MASTER;
 257                 break;
 258         case IEEE80211_IF_TYPE_STA:
 259                 *mode = IW_MODE_INFRA;
 260                 break;
 261         case IEEE80211_IF_TYPE_IBSS:
 262                 *mode = IW_MODE_ADHOC;
 263                 break;
 264         case IEEE80211_IF_TYPE_MNTR:
 265                 *mode = IW_MODE_MONITOR;
 266                 break;
 267         case IEEE80211_IF_TYPE_WDS:
 268                 *mode = IW_MODE_REPEAT;
 269                 break;
 270         case IEEE80211_IF_TYPE_VLAN:
 271                 *mode = IW_MODE_SECOND;         /* FIXME */
 272                 break;
 273         default:
 274                 *mode = IW_MODE_AUTO;
 275                 break;
 276         }
 277         return 0;
 278 }
 279
 280 int ieee80211_set_freq(struct ieee80211_local *local, int freqMHz)
 281 {
 282         int set = 0;
 283         int ret = -EINVAL;
 284         enum ieee80211_band band;
 285         struct ieee80211_supported_band *sband;
 286         int i;
 287
 288         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 289                 sband = local->hw.wiphy->bands[band];
 290
 291                 if (!sband)
 292                         continue;
 293
 294                 for (i = 0; i < sband->n_channels; i++) {
 295                         struct ieee80211_channel *chan = &sband->channels[i];
 296
 297                         if (chan->flags & IEEE80211_CHAN_DISABLED)
 298                                 continue;
 299
 300                         if (chan->center_freq == freqMHz) {
 301                                 set = 1;
 302                                 local->oper_channel = chan;
 303                                 break;
 304                         }
 305                 }
 306                 if (set)
 307                         break;
 308         }
 309
 310         if (set) {
 311                 if (local->sta_sw_scanning)
 312                         ret = 0;
 313                 else
 314                         ret = ieee80211_hw_config(local);
 315
 316                 rate_control_clear(local);
 317         }
 318
 319         return ret;
 320 }
 321
 322 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 323                                    struct iw_request_info *info,
 324                                    struct iw_freq *freq, char *extra)
 325 {
 326         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 327         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 328
 329         if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
 330                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 331
 332         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 333         if (freq->e == 0) {
 334                 if (freq->m < 0) {
 335                         if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
 336                                 sdata->u.sta.flags |=
 337                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 338                         return 0;
 339                 } else
 340                         return ieee80211_set_freq(local,
 341                                 ieee80211_channel_to_frequency(freq->m));
 342         } else {
 343                 int i, div = 1000000;
 344                 for (i = 0; i < freq->e; i++)
 345                         div /= 10;
 346                 if (div > 0)
 347                         return ieee80211_set_freq(local, freq->m / div);
 348                 else
 349                         return -EINVAL;
 350         }
 351 }
 352
 353
 354 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 355                                    struct iw_request_info *info,
 356                                    struct iw_freq *freq, char *extra)
 357 {
 358         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 359
 360         freq->m = local->hw.conf.channel->center_freq;
 361         freq->e = 6;
 362
 363         return 0;
 364 }
 365
 366
 367 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 368                                     struct iw_request_info *info,
 369                                     struct iw_point *data, char *ssid)
 370 {
 371         struct ieee80211_sub_if_data *sdata;
 372         size_t len = data->length;
 373
 374         /* iwconfig uses nul termination in SSID.. */
 375         if (len > 0 && ssid[len - 1] == '\0')
 376                 len--;
 377
 378         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 379         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 380             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 381                 int ret;
 382                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 383                         if (len > IEEE80211_MAX_SSID_LEN)
 384                                 return -EINVAL;
 385                         memcpy(sdata->u.sta.ssid, ssid, len);
 386                         sdata->u.sta.ssid_len = len;
 387                         return 0;
 388                 }
 389                 if (data->flags)
 390                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 391                 else
 392                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 393                 ret = ieee80211_sta_set_ssid(dev, ssid, len);
 394                 if (ret)
 395                         return ret;
 396                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 397                 return 0;
 398         }
 399
 400         if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
 401                 memcpy(sdata->u.ap.ssid, ssid, len);
 402                 memset(sdata->u.ap.ssid + len, 0,
 403                        IEEE80211_MAX_SSID_LEN - len);
 404                 sdata->u.ap.ssid_len = len;
 405                 return ieee80211_if_config(dev);
 406         }
 407         return -EOPNOTSUPP;
 408 }
 409
 410
 411 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 412                                     struct iw_request_info *info,
 413                                     struct iw_point *data, char *ssid)
 414 {
 415         size_t len;
 416
 417         struct ieee80211_sub_if_data *sdata;
 418         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 419         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 420             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 421                 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
 422                 if (res == 0) {
 423                         data->length = len;
 424                         data->flags = 1;
 425                 } else
 426                         data->flags = 0;
 427                 return res;
 428         }
 429
 430         if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
 431                 len = sdata->u.ap.ssid_len;
 432                 if (len > IW_ESSID_MAX_SIZE)
 433                         len = IW_ESSID_MAX_SIZE;
 434                 memcpy(ssid, sdata->u.ap.ssid, len);
 435                 data->length = len;
 436                 data->flags = 1;
 437                 return 0;
 438         }
 439         return -EOPNOTSUPP;
 440 }
 441
 442
 443 static int ieee80211_ioctl_siwap(struct net_device *dev,
 444                                  struct iw_request_info *info,
 445                                  struct sockaddr *ap_addr, char *extra)
 446 {
 447         struct ieee80211_sub_if_data *sdata;
 448
 449         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 450         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 451             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 452                 int ret;
 453                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 454                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 455                                ETH_ALEN);
 456                         return 0;
 457                 }
 458                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 459                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 460                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 461                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 462                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 463                 else
 464                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 465                 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
 466                 if (ret)
 467                         return ret;
 468                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 469                 return 0;
 470         } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
 471                 /*
 472                  * If it is necessary to update the WDS peer address
 473                  * while the interface is running, then we need to do
 474                  * more work here, namely if it is running we need to
 475                  * add a new and remove the old STA entry, this is
 476                  * normally handled by _open() and _stop().
 477                  */
 478                 if (netif_running(dev))
 479                         return -EBUSY;
 480
 481                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 482                        ETH_ALEN);
 483
 484                 return 0;
 485         }
 486
 487         return -EOPNOTSUPP;
 488 }
 489
 490
 491 static int ieee80211_ioctl_giwap(struct net_device *dev,
 492                                  struct iw_request_info *info,
 493                                  struct sockaddr *ap_addr, char *extra)
 494 {
 495         struct ieee80211_sub_if_data *sdata;
 496
 497         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 498         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 499             sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
 500                 ap_addr->sa_family = ARPHRD_ETHER;
 501                 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 502                 return 0;
 503         } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
 504                 ap_addr->sa_family = ARPHRD_ETHER;
 505                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 506                 return 0;
 507         }
 508
 509         return -EOPNOTSUPP;
 510 }
 511
 512
 513 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 514                                    struct iw_request_info *info,
 515                                    union iwreq_data *wrqu, char *extra)
 516 {
 517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 518         struct iw_scan_req *req = NULL;
 519         u8 *ssid = NULL;
 520         size_t ssid_len = 0;
 521
 522         if (!netif_running(dev))
 523                 return -ENETDOWN;
 524
 525         if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
 526             sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
 527             sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
 528             sdata->vif.type != IEEE80211_IF_TYPE_AP)
 529                 return -EOPNOTSUPP;
 530
 531         /* if SSID was specified explicitly then use that */
 532         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
 533             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 534                 req = (struct iw_scan_req *)extra;
 535                 ssid = req->essid;
 536                 ssid_len = req->essid_len;
 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
 550         if (local->sta_sw_scanning || local->sta_hw_scanning)
 551                 return -EAGAIN;
 552
 553         res = ieee80211_sta_scan_results(dev, extra, data->length);
 554         if (res >= 0) {
 555                 data->length = res;
 556                 return 0;
 557         }
 558         data->length = 0;
 559         return res;
 560 }
 561
 562
 563 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 564                                   struct iw_request_info *info,
 565                                   struct iw_param *rate, char *extra)
 566 {
 567         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 568         int i, err = -EINVAL;
 569         u32 target_rate = rate->value / 100000;
 570         struct ieee80211_sub_if_data *sdata;
 571         struct ieee80211_supported_band *sband;
 572
 573         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 574         if (!sdata->bss)
 575                 return -ENODEV;
 576
 577         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 578
 579         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 580          * target_rate = X, rate->fixed = 1 means only rate X
 581          * target_rate = X, rate->fixed = 0 means all rates <= X */
 582         sdata->bss->max_ratectrl_rateidx = -1;
 583         sdata->bss->force_unicast_rateidx = -1;
 584         if (rate->value < 0)
 585                 return 0;
 586
 587         for (i=0; i< sband->n_bitrates; i++) {
 588                 struct ieee80211_rate *brate = &sband->bitrates[i];
 589                 int this_rate = brate->bitrate;
 590
 591                 if (target_rate == this_rate) {
 592                         sdata->bss->max_ratectrl_rateidx = i;
 593                         if (rate->fixed)
 594                                 sdata->bss->force_unicast_rateidx = i;
 595                         err = 0;
 596                         break;
 597                 }
 598         }
 599         return err;
 600 }
 601
 602 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 603                                   struct iw_request_info *info,
 604                                   struct iw_param *rate, char *extra)
 605 {
 606         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 607         struct sta_info *sta;
 608         struct ieee80211_sub_if_data *sdata;
 609         struct ieee80211_supported_band *sband;
 610
 611         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 612
 613         if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
 614                 sta = sta_info_get(local, sdata->u.sta.bssid);
 615         else
 616                 return -EOPNOTSUPP;
 617         if (!sta)
 618                 return -ENODEV;
 619
 620         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 621
 622         if (sta->txrate_idx < sband->n_bitrates)
 623                 rate->value = sband->bitrates[sta->txrate_idx].bitrate;
 624         else
 625                 rate->value = 0;
 626         rate->value *= 100000;
 627
 628         return 0;
 629 }
 630
 631 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 632                                       struct iw_request_info *info,
 633                                       union iwreq_data *data, char *extra)
 634 {
 635         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 636         bool need_reconfig = 0;
 637         int new_power_level;
 638
 639         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 640                 return -EINVAL;
 641         if (data->txpower.flags & IW_TXPOW_RANGE)
 642                 return -EINVAL;
 643
 644         if (data->txpower.fixed) {
 645                 new_power_level = data->txpower.value;
 646         } else {
 647                 /*
 648                  * Automatic power level. Use maximum power for the current
 649                  * channel. Should be part of rate control.
 650                  */
 651                 struct ieee80211_channel* chan = local->hw.conf.channel;
 652                 if (!chan)
 653                         return -EINVAL;
 654
 655                 new_power_level = chan->max_power;
 656         }
 657
 658         if (local->hw.conf.power_level != new_power_level) {
 659                 local->hw.conf.power_level = new_power_level;
 660                 need_reconfig = 1;
 661         }
 662
 663         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 664                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 665                 need_reconfig = 1;
 666                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 667         }
 668
 669         if (need_reconfig) {
 670                 ieee80211_hw_config(local);
 671                 /* The return value of hw_config is not of big interest here,
 672                  * as it doesn't say that it failed because of _this_ config
 673                  * change or something else. Ignore it. */
 674         }
 675
 676         return 0;
 677 }
 678
 679 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 680                                    struct iw_request_info *info,
 681                                    union iwreq_data *data, char *extra)
 682 {
 683         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 684
 685         data->txpower.fixed = 1;
 686         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 687         data->txpower.value = local->hw.conf.power_level;
 688         data->txpower.flags = IW_TXPOW_DBM;
 689
 690         return 0;
 691 }
 692
 693 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 694                                   struct iw_request_info *info,
 695                                   struct iw_param *rts, char *extra)
 696 {
 697         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 698
 699         if (rts->disabled)
 700                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 701         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 702                 return -EINVAL;
 703         else
 704                 local->rts_threshold = rts->value;
 705
 706         /* If the wlan card performs RTS/CTS in hardware/firmware,
 707          * configure it here */
 708
 709         if (local->ops->set_rts_threshold)
 710                 local->ops->set_rts_threshold(local_to_hw(local),
 711                                              local->rts_threshold);
 712
 713         return 0;
 714 }
 715
 716 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 717                                   struct iw_request_info *info,
 718                                   struct iw_param *rts, char *extra)
 719 {
 720         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 721
 722         rts->value = local->rts_threshold;
 723         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 724         rts->fixed = 1;
 725
 726         return 0;
 727 }
 728
 729
 730 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 731                                    struct iw_request_info *info,
 732                                    struct iw_param *frag, char *extra)
 733 {
 734         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 735
 736         if (frag->disabled)
 737                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 738         else if (frag->value < 256 ||
 739                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 740                 return -EINVAL;
 741         else {
 742                 /* Fragment length must be even, so strip LSB. */
 743                 local->fragmentation_threshold = frag->value & ~0x1;
 744         }
 745
 746         /* If the wlan card performs fragmentation in hardware/firmware,
 747          * configure it here */
 748
 749         if (local->ops->set_frag_threshold)
 750                 local->ops->set_frag_threshold(
 751                         local_to_hw(local),
 752                         local->fragmentation_threshold);
 753
 754         return 0;
 755 }
 756
 757 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 758                                    struct iw_request_info *info,
 759                                    struct iw_param *frag, char *extra)
 760 {
 761         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 762
 763         frag->value = local->fragmentation_threshold;
 764         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 765         frag->fixed = 1;
 766
 767         return 0;
 768 }
 769
 770
 771 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 772                                     struct iw_request_info *info,
 773                                     struct iw_param *retry, char *extra)
 774 {
 775         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 776
 777         if (retry->disabled ||
 778             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 779                 return -EINVAL;
 780
 781         if (retry->flags & IW_RETRY_MAX)
 782                 local->long_retry_limit = retry->value;
 783         else if (retry->flags & IW_RETRY_MIN)
 784                 local->short_retry_limit = retry->value;
 785         else {
 786                 local->long_retry_limit = retry->value;
 787                 local->short_retry_limit = retry->value;
 788         }
 789
 790         if (local->ops->set_retry_limit) {
 791                 return local->ops->set_retry_limit(
 792                         local_to_hw(local),
 793                         local->short_retry_limit,
 794                         local->long_retry_limit);
 795         }
 796
 797         return 0;
 798 }
 799
 800
 801 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 802                                     struct iw_request_info *info,
 803                                     struct iw_param *retry, char *extra)
 804 {
 805         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 806
 807         retry->disabled = 0;
 808         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 809                 /* first return min value, iwconfig will ask max value
 810                  * later if needed */
 811                 retry->flags |= IW_RETRY_LIMIT;
 812                 retry->value = local->short_retry_limit;
 813                 if (local->long_retry_limit != local->short_retry_limit)
 814                         retry->flags |= IW_RETRY_MIN;
 815                 return 0;
 816         }
 817         if (retry->flags & IW_RETRY_MAX) {
 818                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 819                 retry->value = local->long_retry_limit;
 820         }
 821
 822         return 0;
 823 }
 824
 825 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 826                                    struct iw_request_info *info,
 827                                    struct iw_point *data, char *extra)
 828 {
 829         struct ieee80211_sub_if_data *sdata;
 830         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 831
 832         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 833         if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
 834             sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
 835                 return -EINVAL;
 836
 837         switch (mlme->cmd) {
 838         case IW_MLME_DEAUTH:
 839                 /* TODO: mlme->addr.sa_data */
 840                 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
 841         case IW_MLME_DISASSOC:
 842                 /* TODO: mlme->addr.sa_data */
 843                 return ieee80211_sta_disassociate(dev, mlme->reason_code);
 844         default:
 845                 return -EOPNOTSUPP;
 846         }
 847 }
 848
 849
 850 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 851                                      struct iw_request_info *info,
 852                                      struct iw_point *erq, char *keybuf)
 853 {
 854         struct ieee80211_sub_if_data *sdata;
 855         int idx, i, alg = ALG_WEP;
 856         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 857         int remove = 0;
 858
 859         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 860
 861         idx = erq->flags & IW_ENCODE_INDEX;
 862         if (idx == 0) {
 863                 if (sdata->default_key)
 864                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 865                                 if (sdata->default_key == sdata->keys[i]) {
 866                                         idx = i;
 867                                         break;
 868                                 }
 869                         }
 870         } else if (idx < 1 || idx > 4)
 871                 return -EINVAL;
 872         else
 873                 idx--;
 874
 875         if (erq->flags & IW_ENCODE_DISABLED)
 876                 remove = 1;
 877         else if (erq->length == 0) {
 878                 /* No key data - just set the default TX key index */
 879                 ieee80211_set_default_key(sdata, idx);
 880                 return 0;
 881         }
 882
 883         return ieee80211_set_encryption(
 884                 dev, bcaddr,
 885                 idx, alg, remove,
 886                 !sdata->default_key,
 887                 keybuf, erq->length);
 888 }
 889
 890
 891 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 892                                      struct iw_request_info *info,
 893                                      struct iw_point *erq, char *key)
 894 {
 895         struct ieee80211_sub_if_data *sdata;
 896         int idx, i;
 897
 898         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 899
 900         idx = erq->flags & IW_ENCODE_INDEX;
 901         if (idx < 1 || idx > 4) {
 902                 idx = -1;
 903                 if (!sdata->default_key)
 904                         idx = 0;
 905                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 906                         if (sdata->default_key == sdata->keys[i]) {
 907                                 idx = i;
 908                                 break;
 909                         }
 910                 }
 911                 if (idx < 0)
 912                         return -EINVAL;
 913         } else
 914                 idx--;
 915
 916         erq->flags = idx + 1;
 917
 918         if (!sdata->keys[idx]) {
 919                 erq->length = 0;
 920                 erq->flags |= IW_ENCODE_DISABLED;
 921                 return 0;
 922         }
 923
 924         memcpy(key, sdata->keys[idx]->conf.key,
 925                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 926         erq->length = sdata->keys[idx]->conf.keylen;
 927         erq->flags |= IW_ENCODE_ENABLED;
 928
 929         return 0;
 930 }
 931
 932 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 933                                    struct iw_request_info *info,
 934                                    struct iw_param *data, char *extra)
 935 {
 936         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 937         int ret = 0;
 938
 939         switch (data->flags & IW_AUTH_INDEX) {
 940         case IW_AUTH_WPA_VERSION:
 941         case IW_AUTH_CIPHER_PAIRWISE:
 942         case IW_AUTH_CIPHER_GROUP:
 943         case IW_AUTH_WPA_ENABLED:
 944         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 945         case IW_AUTH_KEY_MGMT:
 946                 break;
 947         case IW_AUTH_DROP_UNENCRYPTED:
 948                 sdata->drop_unencrypted = !!data->value;
 949                 break;
 950         case IW_AUTH_PRIVACY_INVOKED:
 951                 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
 952                         ret = -EINVAL;
 953                 else {
 954                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 955                         /*
 956                          * Privacy invoked by wpa_supplicant, store the
 957                          * value and allow associating to a protected
 958                          * network without having a key up front.
 959                          */
 960                         if (data->value)
 961                                 sdata->u.sta.flags |=
 962                                         IEEE80211_STA_PRIVACY_INVOKED;
 963                 }
 964                 break;
 965         case IW_AUTH_80211_AUTH_ALG:
 966                 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 967                     sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
 968                         sdata->u.sta.auth_algs = data->value;
 969                 else
 970                         ret = -EOPNOTSUPP;
 971                 break;
 972         default:
 973                 ret = -EOPNOTSUPP;
 974                 break;
 975         }
 976         return ret;
 977 }
 978
 979 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 980 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 981 {
 982         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 983         struct iw_statistics *wstats = &local->wstats;
 984         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 985         struct sta_info *sta = NULL;
 986
 987         if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 988             sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
 989                 sta = sta_info_get(local, sdata->u.sta.bssid);
 990         if (!sta) {
 991                 wstats->discard.fragment = 0;
 992                 wstats->discard.misc = 0;
 993                 wstats->qual.qual = 0;
 994                 wstats->qual.level = 0;
 995                 wstats->qual.noise = 0;
 996                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 997         } else {
 998                 wstats->qual.level = sta->last_rssi;
 999                 wstats->qual.qual = sta->last_signal;
1000                 wstats->qual.noise = sta->last_noise;
1001                 wstats->qual.updated = local->wstats_flags;
1002         }
1003         return wstats;
1004 }
1005
1006 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1007                                    struct iw_request_info *info,
1008                                    struct iw_param *data, char *extra)
1009 {
1010         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1011         int ret = 0;
1012
1013         switch (data->flags & IW_AUTH_INDEX) {
1014         case IW_AUTH_80211_AUTH_ALG:
1015                 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1016                     sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1017                         data->value = sdata->u.sta.auth_algs;
1018                 else
1019                         ret = -EOPNOTSUPP;
1020                 break;
1021         default:
1022                 ret = -EOPNOTSUPP;
1023                 break;
1024         }
1025         return ret;
1026 }
1027
1028
1029 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1030                                         struct iw_request_info *info,
1031                                         struct iw_point *erq, char *extra)
1032 {
1033         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1034         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1035         int uninitialized_var(alg), idx, i, remove = 0;
1036
1037         switch (ext->alg) {
1038         case IW_ENCODE_ALG_NONE:
1039                 remove = 1;
1040                 break;
1041         case IW_ENCODE_ALG_WEP:
1042                 alg = ALG_WEP;
1043                 break;
1044         case IW_ENCODE_ALG_TKIP:
1045                 alg = ALG_TKIP;
1046                 break;
1047         case IW_ENCODE_ALG_CCMP:
1048                 alg = ALG_CCMP;
1049                 break;
1050         default:
1051                 return -EOPNOTSUPP;
1052         }
1053
1054         if (erq->flags & IW_ENCODE_DISABLED)
1055                 remove = 1;
1056
1057         idx = erq->flags & IW_ENCODE_INDEX;
1058         if (idx < 1 || idx > 4) {
1059                 idx = -1;
1060                 if (!sdata->default_key)
1061                         idx = 0;
1062                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1063                         if (sdata->default_key == sdata->keys[i]) {
1064                                 idx = i;
1065                                 break;
1066                         }
1067                 }
1068                 if (idx < 0)
1069                         return -EINVAL;
1070         } else
1071                 idx--;
1072
1073         return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1074                                         remove,
1075                                         ext->ext_flags &
1076                                         IW_ENCODE_EXT_SET_TX_KEY,
1077                                         ext->key, ext->key_len);
1078 }
1079
1080
1081 /* Structures to export the Wireless Handlers */
1082
1083 static const iw_handler ieee80211_handler[] =
1084 {
1085         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1086         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1087         (iw_handler) NULL,                              /* SIOCSIWNWID */
1088         (iw_handler) NULL,                              /* SIOCGIWNWID */
1089         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1090         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1091         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1092         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1093         (iw_handler) NULL,                              /* SIOCSIWSENS */
1094         (iw_handler) NULL,                              /* SIOCGIWSENS */
1095         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1096         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1097         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1098         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1099         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1100         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1101         (iw_handler) NULL,                              /* SIOCSIWSPY */
1102         (iw_handler) NULL,                              /* SIOCGIWSPY */
1103         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1104         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1105         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1106         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1107         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1108         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1109         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1110         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1111         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1112         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1113         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1114         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1115         (iw_handler) NULL,                              /* -- hole -- */
1116         (iw_handler) NULL,                              /* -- hole -- */
1117         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1118         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1119         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1120         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1121         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1122         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1123         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1124         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1125         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1126         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1127         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1128         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1129         (iw_handler) NULL,                              /* SIOCSIWPOWER */
1130         (iw_handler) NULL,                              /* SIOCGIWPOWER */
1131         (iw_handler) NULL,                              /* -- hole -- */
1132         (iw_handler) NULL,                              /* -- hole -- */
1133         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1134         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1135         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1136         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1137         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1138         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1139         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1140         (iw_handler) NULL,                              /* -- hole -- */
1141 };
1142
1143 const struct iw_handler_def ieee80211_iw_handler_def =
1144 {
1145         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1146         .standard       = (iw_handler *) ieee80211_handler,
1147         .get_wireless_stats = ieee80211_get_wireless_stats,
1148 };