net/wireless/wext-compat.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * cfg80211 - wext compat code
   4  *
   5  * This is temporary code until all wireless functionality is migrated
   6  * into cfg80211, when that happens all the exports here go away and
   7  * we directly assign the wireless handlers of wireless interfaces.
   8  *
   9  * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
  10  * Copyright (C) 2019-2022 Intel Corporation
  11  */
  12
  13 #include <linux/export.h>
  14 #include <linux/wireless.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/if_arp.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/slab.h>
  19 #include <net/iw_handler.h>
  20 #include <net/cfg80211.h>
  21 #include <net/cfg80211-wext.h>
  22 #include "wext-compat.h"
  23 #include "core.h"
  24 #include "rdev-ops.h"
  25
  26 int cfg80211_wext_giwname(struct net_device *dev,
  27                           struct iw_request_info *info,
  28                           char *name, char *extra)
  29 {
  30         strcpy(name, "IEEE 802.11");
  31         return 0;
  32 }
  33 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  34
  35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  36                           u32 *mode, char *extra)
  37 {
  38         struct wireless_dev *wdev = dev->ieee80211_ptr;
  39         struct cfg80211_registered_device *rdev;
  40         struct vif_params vifparams;
  41         enum nl80211_iftype type;
  42         int ret;
  43
  44         rdev = wiphy_to_rdev(wdev->wiphy);
  45
  46         switch (*mode) {
  47         case IW_MODE_INFRA:
  48                 type = NL80211_IFTYPE_STATION;
  49                 break;
  50         case IW_MODE_ADHOC:
  51                 type = NL80211_IFTYPE_ADHOC;
  52                 break;
  53         case IW_MODE_MONITOR:
  54                 type = NL80211_IFTYPE_MONITOR;
  55                 break;
  56         default:
  57                 return -EINVAL;
  58         }
  59
  60         if (type == wdev->iftype)
  61                 return 0;
  62
  63         memset(&vifparams, 0, sizeof(vifparams));
  64
  65         wiphy_lock(wdev->wiphy);
  66         ret = cfg80211_change_iface(rdev, dev, type, &vifparams);
  67         wiphy_unlock(wdev->wiphy);
  68
  69         return ret;
  70 }
  71 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  72
  73 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  74                           u32 *mode, char *extra)
  75 {
  76         struct wireless_dev *wdev = dev->ieee80211_ptr;
  77
  78         if (!wdev)
  79                 return -EOPNOTSUPP;
  80
  81         switch (wdev->iftype) {
  82         case NL80211_IFTYPE_AP:
  83                 *mode = IW_MODE_MASTER;
  84                 break;
  85         case NL80211_IFTYPE_STATION:
  86                 *mode = IW_MODE_INFRA;
  87                 break;
  88         case NL80211_IFTYPE_ADHOC:
  89                 *mode = IW_MODE_ADHOC;
  90                 break;
  91         case NL80211_IFTYPE_MONITOR:
  92                 *mode = IW_MODE_MONITOR;
  93                 break;
  94         case NL80211_IFTYPE_WDS:
  95                 *mode = IW_MODE_REPEAT;
  96                 break;
  97         case NL80211_IFTYPE_AP_VLAN:
  98                 *mode = IW_MODE_SECOND;         /* FIXME */
  99                 break;
 100         default:
 101                 *mode = IW_MODE_AUTO;
 102                 break;
 103         }
 104         return 0;
 105 }
 106 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 107
 108
 109 int cfg80211_wext_giwrange(struct net_device *dev,
 110                            struct iw_request_info *info,
 111                            struct iw_point *data, char *extra)
 112 {
 113         struct wireless_dev *wdev = dev->ieee80211_ptr;
 114         struct iw_range *range = (struct iw_range *) extra;
 115         enum nl80211_band band;
 116         int i, c = 0;
 117
 118         if (!wdev)
 119                 return -EOPNOTSUPP;
 120
 121         data->length = sizeof(struct iw_range);
 122         memset(range, 0, sizeof(struct iw_range));
 123
 124         range->we_version_compiled = WIRELESS_EXT;
 125         range->we_version_source = 21;
 126         range->retry_capa = IW_RETRY_LIMIT;
 127         range->retry_flags = IW_RETRY_LIMIT;
 128         range->min_retry = 0;
 129         range->max_retry = 255;
 130         range->min_rts = 0;
 131         range->max_rts = 2347;
 132         range->min_frag = 256;
 133         range->max_frag = 2346;
 134
 135         range->max_encoding_tokens = 4;
 136
 137         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 138
 139         switch (wdev->wiphy->signal_type) {
 140         case CFG80211_SIGNAL_TYPE_NONE:
 141                 break;
 142         case CFG80211_SIGNAL_TYPE_MBM:
 143                 range->max_qual.level = (u8)-110;
 144                 range->max_qual.qual = 70;
 145                 range->avg_qual.qual = 35;
 146                 range->max_qual.updated |= IW_QUAL_DBM;
 147                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 148                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 149                 break;
 150         case CFG80211_SIGNAL_TYPE_UNSPEC:
 151                 range->max_qual.level = 100;
 152                 range->max_qual.qual = 100;
 153                 range->avg_qual.qual = 50;
 154                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 155                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 156                 break;
 157         }
 158
 159         range->avg_qual.level = range->max_qual.level / 2;
 160         range->avg_qual.noise = range->max_qual.noise / 2;
 161         range->avg_qual.updated = range->max_qual.updated;
 162
 163         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 164                 switch (wdev->wiphy->cipher_suites[i]) {
 165                 case WLAN_CIPHER_SUITE_TKIP:
 166                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 167                                             IW_ENC_CAPA_WPA);
 168                         break;
 169
 170                 case WLAN_CIPHER_SUITE_CCMP:
 171                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 172                                             IW_ENC_CAPA_WPA2);
 173                         break;
 174
 175                 case WLAN_CIPHER_SUITE_WEP40:
 176                         range->encoding_size[range->num_encoding_sizes++] =
 177                                 WLAN_KEY_LEN_WEP40;
 178                         break;
 179
 180                 case WLAN_CIPHER_SUITE_WEP104:
 181                         range->encoding_size[range->num_encoding_sizes++] =
 182                                 WLAN_KEY_LEN_WEP104;
 183                         break;
 184                 }
 185         }
 186
 187         for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 188                 struct ieee80211_supported_band *sband;
 189
 190                 sband = wdev->wiphy->bands[band];
 191
 192                 if (!sband)
 193                         continue;
 194
 195                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 196                         struct ieee80211_channel *chan = &sband->channels[i];
 197
 198                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 199                                 range->freq[c].i =
 200                                         ieee80211_frequency_to_channel(
 201                                                 chan->center_freq);
 202                                 range->freq[c].m = chan->center_freq;
 203                                 range->freq[c].e = 6;
 204                                 c++;
 205                         }
 206                 }
 207         }
 208         range->num_channels = c;
 209         range->num_frequency = c;
 210
 211         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 212         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 213         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 214
 215         if (wdev->wiphy->max_scan_ssids > 0)
 216                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 217
 218         return 0;
 219 }
 220 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 221
 222
 223 /**
 224  * cfg80211_wext_freq - get wext frequency for non-"auto"
 225  * @freq: the wext freq encoding
 226  *
 227  * Returns a frequency, or a negative error code, or 0 for auto.
 228  */
 229 int cfg80211_wext_freq(struct iw_freq *freq)
 230 {
 231         /*
 232          * Parse frequency - return 0 for auto and
 233          * -EINVAL for impossible things.
 234          */
 235         if (freq->e == 0) {
 236                 enum nl80211_band band = NL80211_BAND_2GHZ;
 237                 if (freq->m < 0)
 238                         return 0;
 239                 if (freq->m > 14)
 240                         band = NL80211_BAND_5GHZ;
 241                 return ieee80211_channel_to_frequency(freq->m, band);
 242         } else {
 243                 int i, div = 1000000;
 244                 for (i = 0; i < freq->e; i++)
 245                         div /= 10;
 246                 if (div <= 0)
 247                         return -EINVAL;
 248                 return freq->m / div;
 249         }
 250 }
 251
 252 int cfg80211_wext_siwrts(struct net_device *dev,
 253                          struct iw_request_info *info,
 254                          struct iw_param *rts, char *extra)
 255 {
 256         struct wireless_dev *wdev = dev->ieee80211_ptr;
 257         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 258         u32 orts = wdev->wiphy->rts_threshold;
 259         int err;
 260
 261         wiphy_lock(&rdev->wiphy);
 262         if (rts->disabled || !rts->fixed) {
 263                 wdev->wiphy->rts_threshold = (u32) -1;
 264         } else if (rts->value < 0) {
 265                 err = -EINVAL;
 266                 goto out;
 267         } else {
 268                 wdev->wiphy->rts_threshold = rts->value;
 269         }
 270
 271         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 272
 273         if (err)
 274                 wdev->wiphy->rts_threshold = orts;
 275
 276 out:
 277         wiphy_unlock(&rdev->wiphy);
 278         return err;
 279 }
 280 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 281
 282 int cfg80211_wext_giwrts(struct net_device *dev,
 283                          struct iw_request_info *info,
 284                          struct iw_param *rts, char *extra)
 285 {
 286         struct wireless_dev *wdev = dev->ieee80211_ptr;
 287
 288         rts->value = wdev->wiphy->rts_threshold;
 289         rts->disabled = rts->value == (u32) -1;
 290         rts->fixed = 1;
 291
 292         return 0;
 293 }
 294 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 295
 296 int cfg80211_wext_siwfrag(struct net_device *dev,
 297                           struct iw_request_info *info,
 298                           struct iw_param *frag, char *extra)
 299 {
 300         struct wireless_dev *wdev = dev->ieee80211_ptr;
 301         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 302         u32 ofrag = wdev->wiphy->frag_threshold;
 303         int err;
 304
 305         wiphy_lock(&rdev->wiphy);
 306         if (frag->disabled || !frag->fixed) {
 307                 wdev->wiphy->frag_threshold = (u32) -1;
 308         } else if (frag->value < 256) {
 309                 err = -EINVAL;
 310                 goto out;
 311         } else {
 312                 /* Fragment length must be even, so strip LSB. */
 313                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 314         }
 315
 316         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 317         if (err)
 318                 wdev->wiphy->frag_threshold = ofrag;
 319 out:
 320         wiphy_unlock(&rdev->wiphy);
 321
 322         return err;
 323 }
 324 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 325
 326 int cfg80211_wext_giwfrag(struct net_device *dev,
 327                           struct iw_request_info *info,
 328                           struct iw_param *frag, char *extra)
 329 {
 330         struct wireless_dev *wdev = dev->ieee80211_ptr;
 331
 332         frag->value = wdev->wiphy->frag_threshold;
 333         frag->disabled = frag->value == (u32) -1;
 334         frag->fixed = 1;
 335
 336         return 0;
 337 }
 338 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 339
 340 static int cfg80211_wext_siwretry(struct net_device *dev,
 341                                   struct iw_request_info *info,
 342                                   struct iw_param *retry, char *extra)
 343 {
 344         struct wireless_dev *wdev = dev->ieee80211_ptr;
 345         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 346         u32 changed = 0;
 347         u8 olong = wdev->wiphy->retry_long;
 348         u8 oshort = wdev->wiphy->retry_short;
 349         int err;
 350
 351         if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 352             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 353                 return -EINVAL;
 354
 355         wiphy_lock(&rdev->wiphy);
 356         if (retry->flags & IW_RETRY_LONG) {
 357                 wdev->wiphy->retry_long = retry->value;
 358                 changed |= WIPHY_PARAM_RETRY_LONG;
 359         } else if (retry->flags & IW_RETRY_SHORT) {
 360                 wdev->wiphy->retry_short = retry->value;
 361                 changed |= WIPHY_PARAM_RETRY_SHORT;
 362         } else {
 363                 wdev->wiphy->retry_short = retry->value;
 364                 wdev->wiphy->retry_long = retry->value;
 365                 changed |= WIPHY_PARAM_RETRY_LONG;
 366                 changed |= WIPHY_PARAM_RETRY_SHORT;
 367         }
 368
 369         err = rdev_set_wiphy_params(rdev, changed);
 370         if (err) {
 371                 wdev->wiphy->retry_short = oshort;
 372                 wdev->wiphy->retry_long = olong;
 373         }
 374         wiphy_unlock(&rdev->wiphy);
 375
 376         return err;
 377 }
 378
 379 int cfg80211_wext_giwretry(struct net_device *dev,
 380                            struct iw_request_info *info,
 381                            struct iw_param *retry, char *extra)
 382 {
 383         struct wireless_dev *wdev = dev->ieee80211_ptr;
 384
 385         retry->disabled = 0;
 386
 387         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 388                 /*
 389                  * First return short value, iwconfig will ask long value
 390                  * later if needed
 391                  */
 392                 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 393                 retry->value = wdev->wiphy->retry_short;
 394                 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 395                         retry->flags |= IW_RETRY_LONG;
 396
 397                 return 0;
 398         }
 399
 400         if (retry->flags & IW_RETRY_LONG) {
 401                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 402                 retry->value = wdev->wiphy->retry_long;
 403         }
 404
 405         return 0;
 406 }
 407 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 408
 409 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 410                                      struct net_device *dev, bool pairwise,
 411                                      const u8 *addr, bool remove, bool tx_key,
 412                                      int idx, struct key_params *params)
 413 {
 414         struct wireless_dev *wdev = dev->ieee80211_ptr;
 415         int err, i;
 416         bool rejoin = false;
 417
 418         if (wdev->valid_links)
 419                 return -EINVAL;
 420
 421         if (pairwise && !addr)
 422                 return -EINVAL;
 423
 424         /*
 425          * In many cases we won't actually need this, but it's better
 426          * to do it first in case the allocation fails. Don't use wext.
 427          */
 428         if (!wdev->wext.keys) {
 429                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 430                                           GFP_KERNEL);
 431                 if (!wdev->wext.keys)
 432                         return -ENOMEM;
 433                 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 434                         wdev->wext.keys->params[i].key =
 435                                 wdev->wext.keys->data[i];
 436         }
 437
 438         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 439             wdev->iftype != NL80211_IFTYPE_STATION)
 440                 return -EOPNOTSUPP;
 441
 442         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 443                 if (!wdev->connected)
 444                         return -ENOLINK;
 445
 446                 if (!rdev->ops->set_default_mgmt_key)
 447                         return -EOPNOTSUPP;
 448
 449                 if (idx < 4 || idx > 5)
 450                         return -EINVAL;
 451         } else if (idx < 0 || idx > 3)
 452                 return -EINVAL;
 453
 454         if (remove) {
 455                 err = 0;
 456                 if (wdev->connected ||
 457                     (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 458                      wdev->u.ibss.current_bss)) {
 459                         /*
 460                          * If removing the current TX key, we will need to
 461                          * join a new IBSS without the privacy bit clear.
 462                          */
 463                         if (idx == wdev->wext.default_key &&
 464                             wdev->iftype == NL80211_IFTYPE_ADHOC) {
 465                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 466                                 rejoin = true;
 467                         }
 468
 469                         if (!pairwise && addr &&
 470                             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 471                                 err = -ENOENT;
 472                         else
 473                                 err = rdev_del_key(rdev, dev, idx, pairwise,
 474                                                    addr);
 475                 }
 476                 wdev->wext.connect.privacy = false;
 477                 /*
 478                  * Applications using wireless extensions expect to be
 479                  * able to delete keys that don't exist, so allow that.
 480                  */
 481                 if (err == -ENOENT)
 482                         err = 0;
 483                 if (!err) {
 484                         if (!addr && idx < 4) {
 485                                 memset(wdev->wext.keys->data[idx], 0,
 486                                        sizeof(wdev->wext.keys->data[idx]));
 487                                 wdev->wext.keys->params[idx].key_len = 0;
 488                                 wdev->wext.keys->params[idx].cipher = 0;
 489                         }
 490                         if (idx == wdev->wext.default_key)
 491                                 wdev->wext.default_key = -1;
 492                         else if (idx == wdev->wext.default_mgmt_key)
 493                                 wdev->wext.default_mgmt_key = -1;
 494                 }
 495
 496                 if (!err && rejoin)
 497                         err = cfg80211_ibss_wext_join(rdev, wdev);
 498
 499                 return err;
 500         }
 501
 502         if (addr)
 503                 tx_key = false;
 504
 505         if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 506                 return -EINVAL;
 507
 508         err = 0;
 509         if (wdev->connected ||
 510             (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 511              wdev->u.ibss.current_bss))
 512                 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 513         else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 514                  params->cipher != WLAN_CIPHER_SUITE_WEP104)
 515                 return -EINVAL;
 516         if (err)
 517                 return err;
 518
 519         /*
 520          * We only need to store WEP keys, since they're the only keys that
 521          * can be set before a connection is established and persist after
 522          * disconnecting.
 523          */
 524         if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 525                       params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 526                 wdev->wext.keys->params[idx] = *params;
 527                 memcpy(wdev->wext.keys->data[idx],
 528                         params->key, params->key_len);
 529                 wdev->wext.keys->params[idx].key =
 530                         wdev->wext.keys->data[idx];
 531         }
 532
 533         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 534              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 535             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 536                 if (wdev->connected ||
 537                     (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 538                      wdev->u.ibss.current_bss)) {
 539                         /*
 540                          * If we are getting a new TX key from not having
 541                          * had one before we need to join a new IBSS with
 542                          * the privacy bit set.
 543                          */
 544                         if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 545                             wdev->wext.default_key == -1) {
 546                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 547                                 rejoin = true;
 548                         }
 549                         err = rdev_set_default_key(rdev, dev, idx, true, true);
 550                 }
 551                 if (!err) {
 552                         wdev->wext.default_key = idx;
 553                         if (rejoin)
 554                                 err = cfg80211_ibss_wext_join(rdev, wdev);
 555                 }
 556                 return err;
 557         }
 558
 559         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 560             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 561                 if (wdev->connected ||
 562                     (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 563                      wdev->u.ibss.current_bss))
 564                         err = rdev_set_default_mgmt_key(rdev, dev, idx);
 565                 if (!err)
 566                         wdev->wext.default_mgmt_key = idx;
 567                 return err;
 568         }
 569
 570         return 0;
 571 }
 572
 573 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 574                                    struct net_device *dev, bool pairwise,
 575                                    const u8 *addr, bool remove, bool tx_key,
 576                                    int idx, struct key_params *params)
 577 {
 578         int err;
 579
 580         wdev_lock(dev->ieee80211_ptr);
 581         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 582                                         remove, tx_key, idx, params);
 583         wdev_unlock(dev->ieee80211_ptr);
 584
 585         return err;
 586 }
 587
 588 static int cfg80211_wext_siwencode(struct net_device *dev,
 589                                    struct iw_request_info *info,
 590                                    struct iw_point *erq, char *keybuf)
 591 {
 592         struct wireless_dev *wdev = dev->ieee80211_ptr;
 593         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 594         int idx, err;
 595         bool remove = false;
 596         struct key_params params;
 597
 598         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 599             wdev->iftype != NL80211_IFTYPE_ADHOC)
 600                 return -EOPNOTSUPP;
 601
 602         /* no use -- only MFP (set_default_mgmt_key) is optional */
 603         if (!rdev->ops->del_key ||
 604             !rdev->ops->add_key ||
 605             !rdev->ops->set_default_key)
 606                 return -EOPNOTSUPP;
 607
 608         wiphy_lock(&rdev->wiphy);
 609         if (wdev->valid_links) {
 610                 err = -EOPNOTSUPP;
 611                 goto out;
 612         }
 613
 614         idx = erq->flags & IW_ENCODE_INDEX;
 615         if (idx == 0) {
 616                 idx = wdev->wext.default_key;
 617                 if (idx < 0)
 618                         idx = 0;
 619         } else if (idx < 1 || idx > 4) {
 620                 err = -EINVAL;
 621                 goto out;
 622         } else {
 623                 idx--;
 624         }
 625
 626         if (erq->flags & IW_ENCODE_DISABLED)
 627                 remove = true;
 628         else if (erq->length == 0) {
 629                 /* No key data - just set the default TX key index */
 630                 err = 0;
 631                 wdev_lock(wdev);
 632                 if (wdev->connected ||
 633                     (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 634                      wdev->u.ibss.current_bss))
 635                         err = rdev_set_default_key(rdev, dev, idx, true,
 636                                                    true);
 637                 if (!err)
 638                         wdev->wext.default_key = idx;
 639                 wdev_unlock(wdev);
 640                 goto out;
 641         }
 642
 643         memset(&params, 0, sizeof(params));
 644         params.key = keybuf;
 645         params.key_len = erq->length;
 646         if (erq->length == 5) {
 647                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 648         } else if (erq->length == 13) {
 649                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 650         } else if (!remove) {
 651                 err = -EINVAL;
 652                 goto out;
 653         }
 654
 655         err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 656                                       wdev->wext.default_key == -1,
 657                                       idx, &params);
 658 out:
 659         wiphy_unlock(&rdev->wiphy);
 660
 661         return err;
 662 }
 663
 664 static int cfg80211_wext_siwencodeext(struct net_device *dev,
 665                                       struct iw_request_info *info,
 666                                       struct iw_point *erq, char *extra)
 667 {
 668         struct wireless_dev *wdev = dev->ieee80211_ptr;
 669         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 670         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 671         const u8 *addr;
 672         int idx;
 673         bool remove = false;
 674         struct key_params params;
 675         u32 cipher;
 676         int ret;
 677
 678         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 679             wdev->iftype != NL80211_IFTYPE_ADHOC)
 680                 return -EOPNOTSUPP;
 681
 682         /* no use -- only MFP (set_default_mgmt_key) is optional */
 683         if (!rdev->ops->del_key ||
 684             !rdev->ops->add_key ||
 685             !rdev->ops->set_default_key)
 686                 return -EOPNOTSUPP;
 687
 688         switch (ext->alg) {
 689         case IW_ENCODE_ALG_NONE:
 690                 remove = true;
 691                 cipher = 0;
 692                 break;
 693         case IW_ENCODE_ALG_WEP:
 694                 if (ext->key_len == 5)
 695                         cipher = WLAN_CIPHER_SUITE_WEP40;
 696                 else if (ext->key_len == 13)
 697                         cipher = WLAN_CIPHER_SUITE_WEP104;
 698                 else
 699                         return -EINVAL;
 700                 break;
 701         case IW_ENCODE_ALG_TKIP:
 702                 cipher = WLAN_CIPHER_SUITE_TKIP;
 703                 break;
 704         case IW_ENCODE_ALG_CCMP:
 705                 cipher = WLAN_CIPHER_SUITE_CCMP;
 706                 break;
 707         case IW_ENCODE_ALG_AES_CMAC:
 708                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 709                 break;
 710         default:
 711                 return -EOPNOTSUPP;
 712         }
 713
 714         if (erq->flags & IW_ENCODE_DISABLED)
 715                 remove = true;
 716
 717         idx = erq->flags & IW_ENCODE_INDEX;
 718         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 719                 if (idx < 4 || idx > 5) {
 720                         idx = wdev->wext.default_mgmt_key;
 721                         if (idx < 0)
 722                                 return -EINVAL;
 723                 } else
 724                         idx--;
 725         } else {
 726                 if (idx < 1 || idx > 4) {
 727                         idx = wdev->wext.default_key;
 728                         if (idx < 0)
 729                                 return -EINVAL;
 730                 } else
 731                         idx--;
 732         }
 733
 734         addr = ext->addr.sa_data;
 735         if (is_broadcast_ether_addr(addr))
 736                 addr = NULL;
 737
 738         memset(&params, 0, sizeof(params));
 739         params.key = ext->key;
 740         params.key_len = ext->key_len;
 741         params.cipher = cipher;
 742
 743         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 744                 params.seq = ext->rx_seq;
 745                 params.seq_len = 6;
 746         }
 747
 748         wiphy_lock(wdev->wiphy);
 749         ret = cfg80211_set_encryption(
 750                         rdev, dev,
 751                         !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 752                         addr, remove,
 753                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 754                         idx, &params);
 755         wiphy_unlock(wdev->wiphy);
 756
 757         return ret;
 758 }
 759
 760 static int cfg80211_wext_giwencode(struct net_device *dev,
 761                                    struct iw_request_info *info,
 762                                    struct iw_point *erq, char *keybuf)
 763 {
 764         struct wireless_dev *wdev = dev->ieee80211_ptr;
 765         int idx;
 766
 767         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 768             wdev->iftype != NL80211_IFTYPE_ADHOC)
 769                 return -EOPNOTSUPP;
 770
 771         idx = erq->flags & IW_ENCODE_INDEX;
 772         if (idx == 0) {
 773                 idx = wdev->wext.default_key;
 774                 if (idx < 0)
 775                         idx = 0;
 776         } else if (idx < 1 || idx > 4)
 777                 return -EINVAL;
 778         else
 779                 idx--;
 780
 781         erq->flags = idx + 1;
 782
 783         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 784                 erq->flags |= IW_ENCODE_DISABLED;
 785                 erq->length = 0;
 786                 return 0;
 787         }
 788
 789         erq->length = min_t(size_t, erq->length,
 790                             wdev->wext.keys->params[idx].key_len);
 791         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 792         erq->flags |= IW_ENCODE_ENABLED;
 793
 794         return 0;
 795 }
 796
 797 static int cfg80211_wext_siwfreq(struct net_device *dev,
 798                                  struct iw_request_info *info,
 799                                  struct iw_freq *wextfreq, char *extra)
 800 {
 801         struct wireless_dev *wdev = dev->ieee80211_ptr;
 802         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 803         struct cfg80211_chan_def chandef = {
 804                 .width = NL80211_CHAN_WIDTH_20_NOHT,
 805         };
 806         int freq, ret;
 807
 808         wiphy_lock(&rdev->wiphy);
 809
 810         switch (wdev->iftype) {
 811         case NL80211_IFTYPE_STATION:
 812                 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 813                 break;
 814         case NL80211_IFTYPE_ADHOC:
 815                 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 816                 break;
 817         case NL80211_IFTYPE_MONITOR:
 818                 freq = cfg80211_wext_freq(wextfreq);
 819                 if (freq < 0) {
 820                         ret = freq;
 821                         break;
 822                 }
 823                 if (freq == 0) {
 824                         ret = -EINVAL;
 825                         break;
 826                 }
 827                 chandef.center_freq1 = freq;
 828                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 829                 if (!chandef.chan) {
 830                         ret = -EINVAL;
 831                         break;
 832                 }
 833                 ret = cfg80211_set_monitor_channel(rdev, &chandef);
 834                 break;
 835         case NL80211_IFTYPE_MESH_POINT:
 836                 freq = cfg80211_wext_freq(wextfreq);
 837                 if (freq < 0) {
 838                         ret = freq;
 839                         break;
 840                 }
 841                 if (freq == 0) {
 842                         ret = -EINVAL;
 843                         break;
 844                 }
 845                 chandef.center_freq1 = freq;
 846                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 847                 if (!chandef.chan) {
 848                         ret = -EINVAL;
 849                         break;
 850                 }
 851                 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 852                 break;
 853         default:
 854                 ret = -EOPNOTSUPP;
 855                 break;
 856         }
 857
 858         wiphy_unlock(&rdev->wiphy);
 859
 860         return ret;
 861 }
 862
 863 static int cfg80211_wext_giwfreq(struct net_device *dev,
 864                                  struct iw_request_info *info,
 865                                  struct iw_freq *freq, char *extra)
 866 {
 867         struct wireless_dev *wdev = dev->ieee80211_ptr;
 868         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 869         struct cfg80211_chan_def chandef = {};
 870         int ret;
 871
 872         wiphy_lock(&rdev->wiphy);
 873         switch (wdev->iftype) {
 874         case NL80211_IFTYPE_STATION:
 875                 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 876                 break;
 877         case NL80211_IFTYPE_ADHOC:
 878                 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 879                 break;
 880         case NL80211_IFTYPE_MONITOR:
 881                 if (!rdev->ops->get_channel) {
 882                         ret = -EINVAL;
 883                         break;
 884                 }
 885
 886                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
 887                 if (ret)
 888                         break;
 889                 freq->m = chandef.chan->center_freq;
 890                 freq->e = 6;
 891                 ret = 0;
 892                 break;
 893         default:
 894                 ret = -EINVAL;
 895                 break;
 896         }
 897
 898         wiphy_unlock(&rdev->wiphy);
 899
 900         return ret;
 901 }
 902
 903 static int cfg80211_wext_siwtxpower(struct net_device *dev,
 904                                     struct iw_request_info *info,
 905                                     union iwreq_data *data, char *extra)
 906 {
 907         struct wireless_dev *wdev = dev->ieee80211_ptr;
 908         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 909         enum nl80211_tx_power_setting type;
 910         int dbm = 0;
 911         int ret;
 912
 913         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 914                 return -EINVAL;
 915         if (data->txpower.flags & IW_TXPOW_RANGE)
 916                 return -EINVAL;
 917
 918         if (!rdev->ops->set_tx_power)
 919                 return -EOPNOTSUPP;
 920
 921         /* only change when not disabling */
 922         if (!data->txpower.disabled) {
 923                 rfkill_set_sw_state(rdev->wiphy.rfkill, false);
 924
 925                 if (data->txpower.fixed) {
 926                         /*
 927                          * wext doesn't support negative values, see
 928                          * below where it's for automatic
 929                          */
 930                         if (data->txpower.value < 0)
 931                                 return -EINVAL;
 932                         dbm = data->txpower.value;
 933                         type = NL80211_TX_POWER_FIXED;
 934                         /* TODO: do regulatory check! */
 935                 } else {
 936                         /*
 937                          * Automatic power level setting, max being the value
 938                          * passed in from userland.
 939                          */
 940                         if (data->txpower.value < 0) {
 941                                 type = NL80211_TX_POWER_AUTOMATIC;
 942                         } else {
 943                                 dbm = data->txpower.value;
 944                                 type = NL80211_TX_POWER_LIMITED;
 945                         }
 946                 }
 947         } else {
 948                 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
 949                         schedule_work(&rdev->rfkill_block);
 950                 return 0;
 951         }
 952
 953         wiphy_lock(&rdev->wiphy);
 954         ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 955         wiphy_unlock(&rdev->wiphy);
 956
 957         return ret;
 958 }
 959
 960 static int cfg80211_wext_giwtxpower(struct net_device *dev,
 961                                     struct iw_request_info *info,
 962                                     union iwreq_data *data, char *extra)
 963 {
 964         struct wireless_dev *wdev = dev->ieee80211_ptr;
 965         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 966         int err, val;
 967
 968         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 969                 return -EINVAL;
 970         if (data->txpower.flags & IW_TXPOW_RANGE)
 971                 return -EINVAL;
 972
 973         if (!rdev->ops->get_tx_power)
 974                 return -EOPNOTSUPP;
 975
 976         wiphy_lock(&rdev->wiphy);
 977         err = rdev_get_tx_power(rdev, wdev, &val);
 978         wiphy_unlock(&rdev->wiphy);
 979         if (err)
 980                 return err;
 981
 982         /* well... oh well */
 983         data->txpower.fixed = 1;
 984         data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
 985         data->txpower.value = val;
 986         data->txpower.flags = IW_TXPOW_DBM;
 987
 988         return 0;
 989 }
 990
 991 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 992                                  s32 auth_alg)
 993 {
 994         int nr_alg = 0;
 995
 996         if (!auth_alg)
 997                 return -EINVAL;
 998
 999         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
1000                          IW_AUTH_ALG_SHARED_KEY |
1001                          IW_AUTH_ALG_LEAP))
1002                 return -EINVAL;
1003
1004         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
1005                 nr_alg++;
1006                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1007         }
1008
1009         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
1010                 nr_alg++;
1011                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1012         }
1013
1014         if (auth_alg & IW_AUTH_ALG_LEAP) {
1015                 nr_alg++;
1016                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
1017         }
1018
1019         if (nr_alg > 1)
1020                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1021
1022         return 0;
1023 }
1024
1025 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
1026 {
1027         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
1028                              IW_AUTH_WPA_VERSION_WPA2|
1029                              IW_AUTH_WPA_VERSION_DISABLED))
1030                 return -EINVAL;
1031
1032         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
1033             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
1034                              IW_AUTH_WPA_VERSION_WPA2)))
1035                 return -EINVAL;
1036
1037         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
1038                 wdev->wext.connect.crypto.wpa_versions &=
1039                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
1040
1041         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
1042                 wdev->wext.connect.crypto.wpa_versions |=
1043                         NL80211_WPA_VERSION_1;
1044
1045         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
1046                 wdev->wext.connect.crypto.wpa_versions |=
1047                         NL80211_WPA_VERSION_2;
1048
1049         return 0;
1050 }
1051
1052 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
1053 {
1054         if (cipher & IW_AUTH_CIPHER_WEP40)
1055                 wdev->wext.connect.crypto.cipher_group =
1056                         WLAN_CIPHER_SUITE_WEP40;
1057         else if (cipher & IW_AUTH_CIPHER_WEP104)
1058                 wdev->wext.connect.crypto.cipher_group =
1059                         WLAN_CIPHER_SUITE_WEP104;
1060         else if (cipher & IW_AUTH_CIPHER_TKIP)
1061                 wdev->wext.connect.crypto.cipher_group =
1062                         WLAN_CIPHER_SUITE_TKIP;
1063         else if (cipher & IW_AUTH_CIPHER_CCMP)
1064                 wdev->wext.connect.crypto.cipher_group =
1065                         WLAN_CIPHER_SUITE_CCMP;
1066         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1067                 wdev->wext.connect.crypto.cipher_group =
1068                         WLAN_CIPHER_SUITE_AES_CMAC;
1069         else if (cipher & IW_AUTH_CIPHER_NONE)
1070                 wdev->wext.connect.crypto.cipher_group = 0;
1071         else
1072                 return -EINVAL;
1073
1074         return 0;
1075 }
1076
1077 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1078 {
1079         int nr_ciphers = 0;
1080         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1081
1082         if (cipher & IW_AUTH_CIPHER_WEP40) {
1083                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1084                 nr_ciphers++;
1085         }
1086
1087         if (cipher & IW_AUTH_CIPHER_WEP104) {
1088                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1089                 nr_ciphers++;
1090         }
1091
1092         if (cipher & IW_AUTH_CIPHER_TKIP) {
1093                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1094                 nr_ciphers++;
1095         }
1096
1097         if (cipher & IW_AUTH_CIPHER_CCMP) {
1098                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1099                 nr_ciphers++;
1100         }
1101
1102         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1103                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1104                 nr_ciphers++;
1105         }
1106
1107         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1108
1109         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1110
1111         return 0;
1112 }
1113
1114
1115 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1116 {
1117         int nr_akm_suites = 0;
1118
1119         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1120                         IW_AUTH_KEY_MGMT_PSK))
1121                 return -EINVAL;
1122
1123         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1124                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1125                         WLAN_AKM_SUITE_8021X;
1126                 nr_akm_suites++;
1127         }
1128
1129         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1130                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1131                         WLAN_AKM_SUITE_PSK;
1132                 nr_akm_suites++;
1133         }
1134
1135         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1136
1137         return 0;
1138 }
1139
1140 static int cfg80211_wext_siwauth(struct net_device *dev,
1141                                  struct iw_request_info *info,
1142                                  struct iw_param *data, char *extra)
1143 {
1144         struct wireless_dev *wdev = dev->ieee80211_ptr;
1145
1146         if (wdev->iftype != NL80211_IFTYPE_STATION)
1147                 return -EOPNOTSUPP;
1148
1149         switch (data->flags & IW_AUTH_INDEX) {
1150         case IW_AUTH_PRIVACY_INVOKED:
1151                 wdev->wext.connect.privacy = data->value;
1152                 return 0;
1153         case IW_AUTH_WPA_VERSION:
1154                 return cfg80211_set_wpa_version(wdev, data->value);
1155         case IW_AUTH_CIPHER_GROUP:
1156                 return cfg80211_set_cipher_group(wdev, data->value);
1157         case IW_AUTH_KEY_MGMT:
1158                 return cfg80211_set_key_mgt(wdev, data->value);
1159         case IW_AUTH_CIPHER_PAIRWISE:
1160                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1161         case IW_AUTH_80211_AUTH_ALG:
1162                 return cfg80211_set_auth_alg(wdev, data->value);
1163         case IW_AUTH_WPA_ENABLED:
1164         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1165         case IW_AUTH_DROP_UNENCRYPTED:
1166         case IW_AUTH_MFP:
1167                 return 0;
1168         default:
1169                 return -EOPNOTSUPP;
1170         }
1171 }
1172
1173 static int cfg80211_wext_giwauth(struct net_device *dev,
1174                                  struct iw_request_info *info,
1175                                  struct iw_param *data, char *extra)
1176 {
1177         /* XXX: what do we need? */
1178
1179         return -EOPNOTSUPP;
1180 }
1181
1182 static int cfg80211_wext_siwpower(struct net_device *dev,
1183                                   struct iw_request_info *info,
1184                                   struct iw_param *wrq, char *extra)
1185 {
1186         struct wireless_dev *wdev = dev->ieee80211_ptr;
1187         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1188         bool ps;
1189         int timeout = wdev->ps_timeout;
1190         int err;
1191
1192         if (wdev->iftype != NL80211_IFTYPE_STATION)
1193                 return -EINVAL;
1194
1195         if (!rdev->ops->set_power_mgmt)
1196                 return -EOPNOTSUPP;
1197
1198         if (wrq->disabled) {
1199                 ps = false;
1200         } else {
1201                 switch (wrq->flags & IW_POWER_MODE) {
1202                 case IW_POWER_ON:       /* If not specified */
1203                 case IW_POWER_MODE:     /* If set all mask */
1204                 case IW_POWER_ALL_R:    /* If explicitely state all */
1205                         ps = true;
1206                         break;
1207                 default:                /* Otherwise we ignore */
1208                         return -EINVAL;
1209                 }
1210
1211                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1212                         return -EINVAL;
1213
1214                 if (wrq->flags & IW_POWER_TIMEOUT)
1215                         timeout = wrq->value / 1000;
1216         }
1217
1218         wiphy_lock(&rdev->wiphy);
1219         err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1220         wiphy_unlock(&rdev->wiphy);
1221         if (err)
1222                 return err;
1223
1224         wdev->ps = ps;
1225         wdev->ps_timeout = timeout;
1226
1227         return 0;
1228
1229 }
1230
1231 static int cfg80211_wext_giwpower(struct net_device *dev,
1232                                   struct iw_request_info *info,
1233                                   struct iw_param *wrq, char *extra)
1234 {
1235         struct wireless_dev *wdev = dev->ieee80211_ptr;
1236
1237         wrq->disabled = !wdev->ps;
1238
1239         return 0;
1240 }
1241
1242 static int cfg80211_wext_siwrate(struct net_device *dev,
1243                                  struct iw_request_info *info,
1244                                  struct iw_param *rate, char *extra)
1245 {
1246         struct wireless_dev *wdev = dev->ieee80211_ptr;
1247         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1248         struct cfg80211_bitrate_mask mask;
1249         u32 fixed, maxrate;
1250         struct ieee80211_supported_band *sband;
1251         int band, ridx, ret;
1252         bool match = false;
1253
1254         if (!rdev->ops->set_bitrate_mask)
1255                 return -EOPNOTSUPP;
1256
1257         memset(&mask, 0, sizeof(mask));
1258         fixed = 0;
1259         maxrate = (u32)-1;
1260
1261         if (rate->value < 0) {
1262                 /* nothing */
1263         } else if (rate->fixed) {
1264                 fixed = rate->value / 100000;
1265         } else {
1266                 maxrate = rate->value / 100000;
1267         }
1268
1269         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1270                 sband = wdev->wiphy->bands[band];
1271                 if (sband == NULL)
1272                         continue;
1273                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1274                         struct ieee80211_rate *srate = &sband->bitrates[ridx];
1275                         if (fixed == srate->bitrate) {
1276                                 mask.control[band].legacy = 1 << ridx;
1277                                 match = true;
1278                                 break;
1279                         }
1280                         if (srate->bitrate <= maxrate) {
1281                                 mask.control[band].legacy |= 1 << ridx;
1282                                 match = true;
1283                         }
1284                 }
1285         }
1286
1287         if (!match)
1288                 return -EINVAL;
1289
1290         wiphy_lock(&rdev->wiphy);
1291         if (dev->ieee80211_ptr->valid_links)
1292                 ret = -EOPNOTSUPP;
1293         else
1294                 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask);
1295         wiphy_unlock(&rdev->wiphy);
1296
1297         return ret;
1298 }
1299
1300 static int cfg80211_wext_giwrate(struct net_device *dev,
1301                                  struct iw_request_info *info,
1302                                  struct iw_param *rate, char *extra)
1303 {
1304         struct wireless_dev *wdev = dev->ieee80211_ptr;
1305         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1306         struct station_info sinfo = {};
1307         u8 addr[ETH_ALEN];
1308         int err;
1309
1310         if (wdev->iftype != NL80211_IFTYPE_STATION)
1311                 return -EOPNOTSUPP;
1312
1313         if (!rdev->ops->get_station)
1314                 return -EOPNOTSUPP;
1315
1316         err = 0;
1317         wdev_lock(wdev);
1318         if (!wdev->valid_links && wdev->links[0].client.current_bss)
1319                 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid,
1320                        ETH_ALEN);
1321         else
1322                 err = -EOPNOTSUPP;
1323         wdev_unlock(wdev);
1324         if (err)
1325                 return err;
1326
1327         wiphy_lock(&rdev->wiphy);
1328         err = rdev_get_station(rdev, dev, addr, &sinfo);
1329         wiphy_unlock(&rdev->wiphy);
1330         if (err)
1331                 return err;
1332
1333         if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1334                 err = -EOPNOTSUPP;
1335                 goto free;
1336         }
1337
1338         rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1339
1340 free:
1341         cfg80211_sinfo_release_content(&sinfo);
1342         return err;
1343 }
1344
1345 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1346 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1347 {
1348         struct wireless_dev *wdev = dev->ieee80211_ptr;
1349         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1350         /* we are under RTNL - globally locked - so can use static structs */
1351         static struct iw_statistics wstats;
1352         static struct station_info sinfo = {};
1353         u8 bssid[ETH_ALEN];
1354         int ret;
1355
1356         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1357                 return NULL;
1358
1359         if (!rdev->ops->get_station)
1360                 return NULL;
1361
1362         /* Grab BSSID of current BSS, if any */
1363         wdev_lock(wdev);
1364         if (wdev->valid_links || !wdev->links[0].client.current_bss) {
1365                 wdev_unlock(wdev);
1366                 return NULL;
1367         }
1368         memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN);
1369         wdev_unlock(wdev);
1370
1371         memset(&sinfo, 0, sizeof(sinfo));
1372
1373         wiphy_lock(&rdev->wiphy);
1374         ret = rdev_get_station(rdev, dev, bssid, &sinfo);
1375         wiphy_unlock(&rdev->wiphy);
1376
1377         if (ret)
1378                 return NULL;
1379
1380         memset(&wstats, 0, sizeof(wstats));
1381
1382         switch (rdev->wiphy.signal_type) {
1383         case CFG80211_SIGNAL_TYPE_MBM:
1384                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1385                         int sig = sinfo.signal;
1386                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1387                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1388                         wstats.qual.updated |= IW_QUAL_DBM;
1389                         wstats.qual.level = sig;
1390                         if (sig < -110)
1391                                 sig = -110;
1392                         else if (sig > -40)
1393                                 sig = -40;
1394                         wstats.qual.qual = sig + 110;
1395                         break;
1396                 }
1397                 fallthrough;
1398         case CFG80211_SIGNAL_TYPE_UNSPEC:
1399                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1400                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1401                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1402                         wstats.qual.level = sinfo.signal;
1403                         wstats.qual.qual = sinfo.signal;
1404                         break;
1405                 }
1406                 fallthrough;
1407         default:
1408                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1409                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1410         }
1411
1412         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1413         if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1414                 wstats.discard.misc = sinfo.rx_dropped_misc;
1415         if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1416                 wstats.discard.retries = sinfo.tx_failed;
1417
1418         cfg80211_sinfo_release_content(&sinfo);
1419
1420         return &wstats;
1421 }
1422
1423 static int cfg80211_wext_siwap(struct net_device *dev,
1424                                struct iw_request_info *info,
1425                                struct sockaddr *ap_addr, char *extra)
1426 {
1427         struct wireless_dev *wdev = dev->ieee80211_ptr;
1428         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1429         int ret;
1430
1431         wiphy_lock(&rdev->wiphy);
1432         switch (wdev->iftype) {
1433         case NL80211_IFTYPE_ADHOC:
1434                 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1435                 break;
1436         case NL80211_IFTYPE_STATION:
1437                 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1438                 break;
1439         default:
1440                 ret = -EOPNOTSUPP;
1441                 break;
1442         }
1443         wiphy_unlock(&rdev->wiphy);
1444
1445         return ret;
1446 }
1447
1448 static int cfg80211_wext_giwap(struct net_device *dev,
1449                                struct iw_request_info *info,
1450                                struct sockaddr *ap_addr, char *extra)
1451 {
1452         struct wireless_dev *wdev = dev->ieee80211_ptr;
1453         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1454         int ret;
1455
1456         wiphy_lock(&rdev->wiphy);
1457         switch (wdev->iftype) {
1458         case NL80211_IFTYPE_ADHOC:
1459                 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1460                 break;
1461         case NL80211_IFTYPE_STATION:
1462                 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1463                 break;
1464         default:
1465                 ret = -EOPNOTSUPP;
1466                 break;
1467         }
1468         wiphy_unlock(&rdev->wiphy);
1469
1470         return ret;
1471 }
1472
1473 static int cfg80211_wext_siwessid(struct net_device *dev,
1474                                   struct iw_request_info *info,
1475                                   struct iw_point *data, char *ssid)
1476 {
1477         struct wireless_dev *wdev = dev->ieee80211_ptr;
1478         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1479         int ret;
1480
1481         wiphy_lock(&rdev->wiphy);
1482         switch (wdev->iftype) {
1483         case NL80211_IFTYPE_ADHOC:
1484                 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1485                 break;
1486         case NL80211_IFTYPE_STATION:
1487                 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1488                 break;
1489         default:
1490                 ret = -EOPNOTSUPP;
1491                 break;
1492         }
1493         wiphy_unlock(&rdev->wiphy);
1494
1495         return ret;
1496 }
1497
1498 static int cfg80211_wext_giwessid(struct net_device *dev,
1499                                   struct iw_request_info *info,
1500                                   struct iw_point *data, char *ssid)
1501 {
1502         struct wireless_dev *wdev = dev->ieee80211_ptr;
1503         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1504         int ret;
1505
1506         data->flags = 0;
1507         data->length = 0;
1508
1509         wiphy_lock(&rdev->wiphy);
1510         switch (wdev->iftype) {
1511         case NL80211_IFTYPE_ADHOC:
1512                 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1513                 break;
1514         case NL80211_IFTYPE_STATION:
1515                 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1516                 break;
1517         default:
1518                 ret = -EOPNOTSUPP;
1519                 break;
1520         }
1521         wiphy_unlock(&rdev->wiphy);
1522
1523         return ret;
1524 }
1525
1526 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1527                                   struct iw_request_info *info,
1528                                   struct iw_point *data, char *extra)
1529 {
1530         struct wireless_dev *wdev = dev->ieee80211_ptr;
1531         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1532         struct cfg80211_pmksa cfg_pmksa;
1533         struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1534         int ret;
1535
1536         memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1537
1538         if (wdev->iftype != NL80211_IFTYPE_STATION)
1539                 return -EINVAL;
1540
1541         cfg_pmksa.bssid = pmksa->bssid.sa_data;
1542         cfg_pmksa.pmkid = pmksa->pmkid;
1543
1544         wiphy_lock(&rdev->wiphy);
1545         switch (pmksa->cmd) {
1546         case IW_PMKSA_ADD:
1547                 if (!rdev->ops->set_pmksa) {
1548                         ret = -EOPNOTSUPP;
1549                         break;
1550                 }
1551
1552                 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1553                 break;
1554         case IW_PMKSA_REMOVE:
1555                 if (!rdev->ops->del_pmksa) {
1556                         ret = -EOPNOTSUPP;
1557                         break;
1558                 }
1559
1560                 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1561                 break;
1562         case IW_PMKSA_FLUSH:
1563                 if (!rdev->ops->flush_pmksa) {
1564                         ret = -EOPNOTSUPP;
1565                         break;
1566                 }
1567
1568                 ret = rdev_flush_pmksa(rdev, dev);
1569                 break;
1570         default:
1571                 ret = -EOPNOTSUPP;
1572                 break;
1573         }
1574         wiphy_unlock(&rdev->wiphy);
1575
1576         return ret;
1577 }
1578
1579 #define DEFINE_WEXT_COMPAT_STUB(func, type)                     \
1580         static int __ ## func(struct net_device *dev,           \
1581                               struct iw_request_info *info,     \
1582                               union iwreq_data *wrqu,           \
1583                               char *extra)                      \
1584         {                                                       \
1585                 return func(dev, info, (type *)wrqu, extra);    \
1586         }
1587
1588 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char)
1589 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq)
1590 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq)
1591 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32)
1592 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32)
1593 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point)
1594 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr)
1595 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr)
1596 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point)
1597 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point)
1598 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point)
1599 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point)
1600 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param)
1601 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param)
1602 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param)
1603 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param)
1604 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param)
1605 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param)
1606 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param)
1607 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param)
1608 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point)
1609 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point)
1610 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param)
1611 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param)
1612 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point)
1613 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param)
1614 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param)
1615 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point)
1616 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point)
1617
1618 static const iw_handler cfg80211_handlers[] = {
1619         [IW_IOCTL_IDX(SIOCGIWNAME)]     = __cfg80211_wext_giwname,
1620         [IW_IOCTL_IDX(SIOCSIWFREQ)]     = __cfg80211_wext_siwfreq,
1621         [IW_IOCTL_IDX(SIOCGIWFREQ)]     = __cfg80211_wext_giwfreq,
1622         [IW_IOCTL_IDX(SIOCSIWMODE)]     = __cfg80211_wext_siwmode,
1623         [IW_IOCTL_IDX(SIOCGIWMODE)]     = __cfg80211_wext_giwmode,
1624         [IW_IOCTL_IDX(SIOCGIWRANGE)]    = __cfg80211_wext_giwrange,
1625         [IW_IOCTL_IDX(SIOCSIWAP)]       = __cfg80211_wext_siwap,
1626         [IW_IOCTL_IDX(SIOCGIWAP)]       = __cfg80211_wext_giwap,
1627         [IW_IOCTL_IDX(SIOCSIWMLME)]     = __cfg80211_wext_siwmlme,
1628         [IW_IOCTL_IDX(SIOCSIWSCAN)]     = cfg80211_wext_siwscan,
1629         [IW_IOCTL_IDX(SIOCGIWSCAN)]     = __cfg80211_wext_giwscan,
1630         [IW_IOCTL_IDX(SIOCSIWESSID)]    = __cfg80211_wext_siwessid,
1631         [IW_IOCTL_IDX(SIOCGIWESSID)]    = __cfg80211_wext_giwessid,
1632         [IW_IOCTL_IDX(SIOCSIWRATE)]     = __cfg80211_wext_siwrate,
1633         [IW_IOCTL_IDX(SIOCGIWRATE)]     = __cfg80211_wext_giwrate,
1634         [IW_IOCTL_IDX(SIOCSIWRTS)]      = __cfg80211_wext_siwrts,
1635         [IW_IOCTL_IDX(SIOCGIWRTS)]      = __cfg80211_wext_giwrts,
1636         [IW_IOCTL_IDX(SIOCSIWFRAG)]     = __cfg80211_wext_siwfrag,
1637         [IW_IOCTL_IDX(SIOCGIWFRAG)]     = __cfg80211_wext_giwfrag,
1638         [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = cfg80211_wext_siwtxpower,
1639         [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = cfg80211_wext_giwtxpower,
1640         [IW_IOCTL_IDX(SIOCSIWRETRY)]    = __cfg80211_wext_siwretry,
1641         [IW_IOCTL_IDX(SIOCGIWRETRY)]    = __cfg80211_wext_giwretry,
1642         [IW_IOCTL_IDX(SIOCSIWENCODE)]   = __cfg80211_wext_siwencode,
1643         [IW_IOCTL_IDX(SIOCGIWENCODE)]   = __cfg80211_wext_giwencode,
1644         [IW_IOCTL_IDX(SIOCSIWPOWER)]    = __cfg80211_wext_siwpower,
1645         [IW_IOCTL_IDX(SIOCGIWPOWER)]    = __cfg80211_wext_giwpower,
1646         [IW_IOCTL_IDX(SIOCSIWGENIE)]    = __cfg80211_wext_siwgenie,
1647         [IW_IOCTL_IDX(SIOCSIWAUTH)]     = __cfg80211_wext_siwauth,
1648         [IW_IOCTL_IDX(SIOCGIWAUTH)]     = __cfg80211_wext_giwauth,
1649         [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext,
1650         [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = __cfg80211_wext_siwpmksa,
1651 };
1652
1653 const struct iw_handler_def cfg80211_wext_handler = {
1654         .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1655         .standard               = cfg80211_handlers,
1656         .get_wireless_stats = cfg80211_wireless_stats,
1657 };