linux/net/wireless/wext-compat.c
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   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 */
  11
  12#include <linux/export.h>
  13#include <linux/wireless.h>
  14#include <linux/nl80211.h>
  15#include <linux/if_arp.h>
  16#include <linux/etherdevice.h>
  17#include <linux/slab.h>
  18#include <net/iw_handler.h>
  19#include <net/cfg80211.h>
  20#include <net/cfg80211-wext.h>
  21#include "wext-compat.h"
  22#include "core.h"
  23#include "rdev-ops.h"
  24
  25int cfg80211_wext_giwname(struct net_device *dev,
  26                          struct iw_request_info *info,
  27                          char *name, char *extra)
  28{
  29        strcpy(name, "IEEE 802.11");
  30        return 0;
  31}
  32EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  33
  34int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  35                          u32 *mode, char *extra)
  36{
  37        struct wireless_dev *wdev = dev->ieee80211_ptr;
  38        struct cfg80211_registered_device *rdev;
  39        struct vif_params vifparams;
  40        enum nl80211_iftype type;
  41
  42        rdev = wiphy_to_rdev(wdev->wiphy);
  43
  44        switch (*mode) {
  45        case IW_MODE_INFRA:
  46                type = NL80211_IFTYPE_STATION;
  47                break;
  48        case IW_MODE_ADHOC:
  49                type = NL80211_IFTYPE_ADHOC;
  50                break;
  51        case IW_MODE_REPEAT:
  52                type = NL80211_IFTYPE_WDS;
  53                break;
  54        case IW_MODE_MONITOR:
  55                type = NL80211_IFTYPE_MONITOR;
  56                break;
  57        default:
  58                return -EINVAL;
  59        }
  60
  61        if (type == wdev->iftype)
  62                return 0;
  63
  64        memset(&vifparams, 0, sizeof(vifparams));
  65
  66        return cfg80211_change_iface(rdev, dev, type, &vifparams);
  67}
  68EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  69
  70int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  71                          u32 *mode, char *extra)
  72{
  73        struct wireless_dev *wdev = dev->ieee80211_ptr;
  74
  75        if (!wdev)
  76                return -EOPNOTSUPP;
  77
  78        switch (wdev->iftype) {
  79        case NL80211_IFTYPE_AP:
  80                *mode = IW_MODE_MASTER;
  81                break;
  82        case NL80211_IFTYPE_STATION:
  83                *mode = IW_MODE_INFRA;
  84                break;
  85        case NL80211_IFTYPE_ADHOC:
  86                *mode = IW_MODE_ADHOC;
  87                break;
  88        case NL80211_IFTYPE_MONITOR:
  89                *mode = IW_MODE_MONITOR;
  90                break;
  91        case NL80211_IFTYPE_WDS:
  92                *mode = IW_MODE_REPEAT;
  93                break;
  94        case NL80211_IFTYPE_AP_VLAN:
  95                *mode = IW_MODE_SECOND;         /* FIXME */
  96                break;
  97        default:
  98                *mode = IW_MODE_AUTO;
  99                break;
 100        }
 101        return 0;
 102}
 103EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 104
 105
 106int cfg80211_wext_giwrange(struct net_device *dev,
 107                           struct iw_request_info *info,
 108                           struct iw_point *data, char *extra)
 109{
 110        struct wireless_dev *wdev = dev->ieee80211_ptr;
 111        struct iw_range *range = (struct iw_range *) extra;
 112        enum nl80211_band band;
 113        int i, c = 0;
 114
 115        if (!wdev)
 116                return -EOPNOTSUPP;
 117
 118        data->length = sizeof(struct iw_range);
 119        memset(range, 0, sizeof(struct iw_range));
 120
 121        range->we_version_compiled = WIRELESS_EXT;
 122        range->we_version_source = 21;
 123        range->retry_capa = IW_RETRY_LIMIT;
 124        range->retry_flags = IW_RETRY_LIMIT;
 125        range->min_retry = 0;
 126        range->max_retry = 255;
 127        range->min_rts = 0;
 128        range->max_rts = 2347;
 129        range->min_frag = 256;
 130        range->max_frag = 2346;
 131
 132        range->max_encoding_tokens = 4;
 133
 134        range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 135
 136        switch (wdev->wiphy->signal_type) {
 137        case CFG80211_SIGNAL_TYPE_NONE:
 138                break;
 139        case CFG80211_SIGNAL_TYPE_MBM:
 140                range->max_qual.level = (u8)-110;
 141                range->max_qual.qual = 70;
 142                range->avg_qual.qual = 35;
 143                range->max_qual.updated |= IW_QUAL_DBM;
 144                range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 145                range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 146                break;
 147        case CFG80211_SIGNAL_TYPE_UNSPEC:
 148                range->max_qual.level = 100;
 149                range->max_qual.qual = 100;
 150                range->avg_qual.qual = 50;
 151                range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 152                range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 153                break;
 154        }
 155
 156        range->avg_qual.level = range->max_qual.level / 2;
 157        range->avg_qual.noise = range->max_qual.noise / 2;
 158        range->avg_qual.updated = range->max_qual.updated;
 159
 160        for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 161                switch (wdev->wiphy->cipher_suites[i]) {
 162                case WLAN_CIPHER_SUITE_TKIP:
 163                        range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 164                                            IW_ENC_CAPA_WPA);
 165                        break;
 166
 167                case WLAN_CIPHER_SUITE_CCMP:
 168                        range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 169                                            IW_ENC_CAPA_WPA2);
 170                        break;
 171
 172                case WLAN_CIPHER_SUITE_WEP40:
 173                        range->encoding_size[range->num_encoding_sizes++] =
 174                                WLAN_KEY_LEN_WEP40;
 175                        break;
 176
 177                case WLAN_CIPHER_SUITE_WEP104:
 178                        range->encoding_size[range->num_encoding_sizes++] =
 179                                WLAN_KEY_LEN_WEP104;
 180                        break;
 181                }
 182        }
 183
 184        for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 185                struct ieee80211_supported_band *sband;
 186
 187                sband = wdev->wiphy->bands[band];
 188
 189                if (!sband)
 190                        continue;
 191
 192                for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 193                        struct ieee80211_channel *chan = &sband->channels[i];
 194
 195                        if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 196                                range->freq[c].i =
 197                                        ieee80211_frequency_to_channel(
 198                                                chan->center_freq);
 199                                range->freq[c].m = chan->center_freq;
 200                                range->freq[c].e = 6;
 201                                c++;
 202                        }
 203                }
 204        }
 205        range->num_channels = c;
 206        range->num_frequency = c;
 207
 208        IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 209        IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 210        IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 211
 212        if (wdev->wiphy->max_scan_ssids > 0)
 213                range->scan_capa |= IW_SCAN_CAPA_ESSID;
 214
 215        return 0;
 216}
 217EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 218
 219
 220/**
 221 * cfg80211_wext_freq - get wext frequency for non-"auto"
 222 * @dev: the net device
 223 * @freq: the wext freq encoding
 224 *
 225 * Returns a frequency, or a negative error code, or 0 for auto.
 226 */
 227int cfg80211_wext_freq(struct iw_freq *freq)
 228{
 229        /*
 230         * Parse frequency - return 0 for auto and
 231         * -EINVAL for impossible things.
 232         */
 233        if (freq->e == 0) {
 234                enum nl80211_band band = NL80211_BAND_2GHZ;
 235                if (freq->m < 0)
 236                        return 0;
 237                if (freq->m > 14)
 238                        band = NL80211_BAND_5GHZ;
 239                return ieee80211_channel_to_frequency(freq->m, band);
 240        } else {
 241                int i, div = 1000000;
 242                for (i = 0; i < freq->e; i++)
 243                        div /= 10;
 244                if (div <= 0)
 245                        return -EINVAL;
 246                return freq->m / div;
 247        }
 248}
 249
 250int cfg80211_wext_siwrts(struct net_device *dev,
 251                         struct iw_request_info *info,
 252                         struct iw_param *rts, char *extra)
 253{
 254        struct wireless_dev *wdev = dev->ieee80211_ptr;
 255        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 256        u32 orts = wdev->wiphy->rts_threshold;
 257        int err;
 258
 259        if (rts->disabled || !rts->fixed)
 260                wdev->wiphy->rts_threshold = (u32) -1;
 261        else if (rts->value < 0)
 262                return -EINVAL;
 263        else
 264                wdev->wiphy->rts_threshold = rts->value;
 265
 266        err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 267        if (err)
 268                wdev->wiphy->rts_threshold = orts;
 269
 270        return err;
 271}
 272EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 273
 274int cfg80211_wext_giwrts(struct net_device *dev,
 275                         struct iw_request_info *info,
 276                         struct iw_param *rts, char *extra)
 277{
 278        struct wireless_dev *wdev = dev->ieee80211_ptr;
 279
 280        rts->value = wdev->wiphy->rts_threshold;
 281        rts->disabled = rts->value == (u32) -1;
 282        rts->fixed = 1;
 283
 284        return 0;
 285}
 286EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 287
 288int cfg80211_wext_siwfrag(struct net_device *dev,
 289                          struct iw_request_info *info,
 290                          struct iw_param *frag, char *extra)
 291{
 292        struct wireless_dev *wdev = dev->ieee80211_ptr;
 293        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 294        u32 ofrag = wdev->wiphy->frag_threshold;
 295        int err;
 296
 297        if (frag->disabled || !frag->fixed)
 298                wdev->wiphy->frag_threshold = (u32) -1;
 299        else if (frag->value < 256)
 300                return -EINVAL;
 301        else {
 302                /* Fragment length must be even, so strip LSB. */
 303                wdev->wiphy->frag_threshold = frag->value & ~0x1;
 304        }
 305
 306        err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 307        if (err)
 308                wdev->wiphy->frag_threshold = ofrag;
 309
 310        return err;
 311}
 312EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 313
 314int cfg80211_wext_giwfrag(struct net_device *dev,
 315                          struct iw_request_info *info,
 316                          struct iw_param *frag, char *extra)
 317{
 318        struct wireless_dev *wdev = dev->ieee80211_ptr;
 319
 320        frag->value = wdev->wiphy->frag_threshold;
 321        frag->disabled = frag->value == (u32) -1;
 322        frag->fixed = 1;
 323
 324        return 0;
 325}
 326EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 327
 328static int cfg80211_wext_siwretry(struct net_device *dev,
 329                                  struct iw_request_info *info,
 330                                  struct iw_param *retry, char *extra)
 331{
 332        struct wireless_dev *wdev = dev->ieee80211_ptr;
 333        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 334        u32 changed = 0;
 335        u8 olong = wdev->wiphy->retry_long;
 336        u8 oshort = wdev->wiphy->retry_short;
 337        int err;
 338
 339        if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 340            (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 341                return -EINVAL;
 342
 343        if (retry->flags & IW_RETRY_LONG) {
 344                wdev->wiphy->retry_long = retry->value;
 345                changed |= WIPHY_PARAM_RETRY_LONG;
 346        } else if (retry->flags & IW_RETRY_SHORT) {
 347                wdev->wiphy->retry_short = retry->value;
 348                changed |= WIPHY_PARAM_RETRY_SHORT;
 349        } else {
 350                wdev->wiphy->retry_short = retry->value;
 351                wdev->wiphy->retry_long = retry->value;
 352                changed |= WIPHY_PARAM_RETRY_LONG;
 353                changed |= WIPHY_PARAM_RETRY_SHORT;
 354        }
 355
 356        err = rdev_set_wiphy_params(rdev, changed);
 357        if (err) {
 358                wdev->wiphy->retry_short = oshort;
 359                wdev->wiphy->retry_long = olong;
 360        }
 361
 362        return err;
 363}
 364
 365int cfg80211_wext_giwretry(struct net_device *dev,
 366                           struct iw_request_info *info,
 367                           struct iw_param *retry, char *extra)
 368{
 369        struct wireless_dev *wdev = dev->ieee80211_ptr;
 370
 371        retry->disabled = 0;
 372
 373        if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 374                /*
 375                 * First return short value, iwconfig will ask long value
 376                 * later if needed
 377                 */
 378                retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 379                retry->value = wdev->wiphy->retry_short;
 380                if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 381                        retry->flags |= IW_RETRY_LONG;
 382
 383                return 0;
 384        }
 385
 386        if (retry->flags & IW_RETRY_LONG) {
 387                retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 388                retry->value = wdev->wiphy->retry_long;
 389        }
 390
 391        return 0;
 392}
 393EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 394
 395static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 396                                     struct net_device *dev, bool pairwise,
 397                                     const u8 *addr, bool remove, bool tx_key,
 398                                     int idx, struct key_params *params)
 399{
 400        struct wireless_dev *wdev = dev->ieee80211_ptr;
 401        int err, i;
 402        bool rejoin = false;
 403
 404        if (pairwise && !addr)
 405                return -EINVAL;
 406
 407        /*
 408         * In many cases we won't actually need this, but it's better
 409         * to do it first in case the allocation fails. Don't use wext.
 410         */
 411        if (!wdev->wext.keys) {
 412                wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 413                                          GFP_KERNEL);
 414                if (!wdev->wext.keys)
 415                        return -ENOMEM;
 416                for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 417                        wdev->wext.keys->params[i].key =
 418                                wdev->wext.keys->data[i];
 419        }
 420
 421        if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 422            wdev->iftype != NL80211_IFTYPE_STATION)
 423                return -EOPNOTSUPP;
 424
 425        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 426                if (!wdev->current_bss)
 427                        return -ENOLINK;
 428
 429                if (!rdev->ops->set_default_mgmt_key)
 430                        return -EOPNOTSUPP;
 431
 432                if (idx < 4 || idx > 5)
 433                        return -EINVAL;
 434        } else if (idx < 0 || idx > 3)
 435                return -EINVAL;
 436
 437        if (remove) {
 438                err = 0;
 439                if (wdev->current_bss) {
 440                        /*
 441                         * If removing the current TX key, we will need to
 442                         * join a new IBSS without the privacy bit clear.
 443                         */
 444                        if (idx == wdev->wext.default_key &&
 445                            wdev->iftype == NL80211_IFTYPE_ADHOC) {
 446                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 447                                rejoin = true;
 448                        }
 449
 450                        if (!pairwise && addr &&
 451                            !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 452                                err = -ENOENT;
 453                        else
 454                                err = rdev_del_key(rdev, dev, idx, pairwise,
 455                                                   addr);
 456                }
 457                wdev->wext.connect.privacy = false;
 458                /*
 459                 * Applications using wireless extensions expect to be
 460                 * able to delete keys that don't exist, so allow that.
 461                 */
 462                if (err == -ENOENT)
 463                        err = 0;
 464                if (!err) {
 465                        if (!addr && idx < 4) {
 466                                memset(wdev->wext.keys->data[idx], 0,
 467                                       sizeof(wdev->wext.keys->data[idx]));
 468                                wdev->wext.keys->params[idx].key_len = 0;
 469                                wdev->wext.keys->params[idx].cipher = 0;
 470                        }
 471                        if (idx == wdev->wext.default_key)
 472                                wdev->wext.default_key = -1;
 473                        else if (idx == wdev->wext.default_mgmt_key)
 474                                wdev->wext.default_mgmt_key = -1;
 475                }
 476
 477                if (!err && rejoin)
 478                        err = cfg80211_ibss_wext_join(rdev, wdev);
 479
 480                return err;
 481        }
 482
 483        if (addr)
 484                tx_key = false;
 485
 486        if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 487                return -EINVAL;
 488
 489        err = 0;
 490        if (wdev->current_bss)
 491                err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 492        else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 493                 params->cipher != WLAN_CIPHER_SUITE_WEP104)
 494                return -EINVAL;
 495        if (err)
 496                return err;
 497
 498        /*
 499         * We only need to store WEP keys, since they're the only keys that
 500         * can be be set before a connection is established and persist after
 501         * disconnecting.
 502         */
 503        if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 504                      params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 505                wdev->wext.keys->params[idx] = *params;
 506                memcpy(wdev->wext.keys->data[idx],
 507                        params->key, params->key_len);
 508                wdev->wext.keys->params[idx].key =
 509                        wdev->wext.keys->data[idx];
 510        }
 511
 512        if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 513             params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 514            (tx_key || (!addr && wdev->wext.default_key == -1))) {
 515                if (wdev->current_bss) {
 516                        /*
 517                         * If we are getting a new TX key from not having
 518                         * had one before we need to join a new IBSS with
 519                         * the privacy bit set.
 520                         */
 521                        if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 522                            wdev->wext.default_key == -1) {
 523                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 524                                rejoin = true;
 525                        }
 526                        err = rdev_set_default_key(rdev, dev, idx, true, true);
 527                }
 528                if (!err) {
 529                        wdev->wext.default_key = idx;
 530                        if (rejoin)
 531                                err = cfg80211_ibss_wext_join(rdev, wdev);
 532                }
 533                return err;
 534        }
 535
 536        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 537            (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 538                if (wdev->current_bss)
 539                        err = rdev_set_default_mgmt_key(rdev, dev, idx);
 540                if (!err)
 541                        wdev->wext.default_mgmt_key = idx;
 542                return err;
 543        }
 544
 545        return 0;
 546}
 547
 548static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 549                                   struct net_device *dev, bool pairwise,
 550                                   const u8 *addr, bool remove, bool tx_key,
 551                                   int idx, struct key_params *params)
 552{
 553        int err;
 554
 555        wdev_lock(dev->ieee80211_ptr);
 556        err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 557                                        remove, tx_key, idx, params);
 558        wdev_unlock(dev->ieee80211_ptr);
 559
 560        return err;
 561}
 562
 563static int cfg80211_wext_siwencode(struct net_device *dev,
 564                                   struct iw_request_info *info,
 565                                   struct iw_point *erq, char *keybuf)
 566{
 567        struct wireless_dev *wdev = dev->ieee80211_ptr;
 568        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 569        int idx, err;
 570        bool remove = false;
 571        struct key_params params;
 572
 573        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 574            wdev->iftype != NL80211_IFTYPE_ADHOC)
 575                return -EOPNOTSUPP;
 576
 577        /* no use -- only MFP (set_default_mgmt_key) is optional */
 578        if (!rdev->ops->del_key ||
 579            !rdev->ops->add_key ||
 580            !rdev->ops->set_default_key)
 581                return -EOPNOTSUPP;
 582
 583        idx = erq->flags & IW_ENCODE_INDEX;
 584        if (idx == 0) {
 585                idx = wdev->wext.default_key;
 586                if (idx < 0)
 587                        idx = 0;
 588        } else if (idx < 1 || idx > 4)
 589                return -EINVAL;
 590        else
 591                idx--;
 592
 593        if (erq->flags & IW_ENCODE_DISABLED)
 594                remove = true;
 595        else if (erq->length == 0) {
 596                /* No key data - just set the default TX key index */
 597                err = 0;
 598                wdev_lock(wdev);
 599                if (wdev->current_bss)
 600                        err = rdev_set_default_key(rdev, dev, idx, true,
 601                                                   true);
 602                if (!err)
 603                        wdev->wext.default_key = idx;
 604                wdev_unlock(wdev);
 605                return err;
 606        }
 607
 608        memset(&params, 0, sizeof(params));
 609        params.key = keybuf;
 610        params.key_len = erq->length;
 611        if (erq->length == 5)
 612                params.cipher = WLAN_CIPHER_SUITE_WEP40;
 613        else if (erq->length == 13)
 614                params.cipher = WLAN_CIPHER_SUITE_WEP104;
 615        else if (!remove)
 616                return -EINVAL;
 617
 618        return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 619                                       wdev->wext.default_key == -1,
 620                                       idx, &params);
 621}
 622
 623static int cfg80211_wext_siwencodeext(struct net_device *dev,
 624                                      struct iw_request_info *info,
 625                                      struct iw_point *erq, char *extra)
 626{
 627        struct wireless_dev *wdev = dev->ieee80211_ptr;
 628        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 629        struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 630        const u8 *addr;
 631        int idx;
 632        bool remove = false;
 633        struct key_params params;
 634        u32 cipher;
 635
 636        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 637            wdev->iftype != NL80211_IFTYPE_ADHOC)
 638                return -EOPNOTSUPP;
 639
 640        /* no use -- only MFP (set_default_mgmt_key) is optional */
 641        if (!rdev->ops->del_key ||
 642            !rdev->ops->add_key ||
 643            !rdev->ops->set_default_key)
 644                return -EOPNOTSUPP;
 645
 646        switch (ext->alg) {
 647        case IW_ENCODE_ALG_NONE:
 648                remove = true;
 649                cipher = 0;
 650                break;
 651        case IW_ENCODE_ALG_WEP:
 652                if (ext->key_len == 5)
 653                        cipher = WLAN_CIPHER_SUITE_WEP40;
 654                else if (ext->key_len == 13)
 655                        cipher = WLAN_CIPHER_SUITE_WEP104;
 656                else
 657                        return -EINVAL;
 658                break;
 659        case IW_ENCODE_ALG_TKIP:
 660                cipher = WLAN_CIPHER_SUITE_TKIP;
 661                break;
 662        case IW_ENCODE_ALG_CCMP:
 663                cipher = WLAN_CIPHER_SUITE_CCMP;
 664                break;
 665        case IW_ENCODE_ALG_AES_CMAC:
 666                cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 667                break;
 668        default:
 669                return -EOPNOTSUPP;
 670        }
 671
 672        if (erq->flags & IW_ENCODE_DISABLED)
 673                remove = true;
 674
 675        idx = erq->flags & IW_ENCODE_INDEX;
 676        if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 677                if (idx < 4 || idx > 5) {
 678                        idx = wdev->wext.default_mgmt_key;
 679                        if (idx < 0)
 680                                return -EINVAL;
 681                } else
 682                        idx--;
 683        } else {
 684                if (idx < 1 || idx > 4) {
 685                        idx = wdev->wext.default_key;
 686                        if (idx < 0)
 687                                return -EINVAL;
 688                } else
 689                        idx--;
 690        }
 691
 692        addr = ext->addr.sa_data;
 693        if (is_broadcast_ether_addr(addr))
 694                addr = NULL;
 695
 696        memset(&params, 0, sizeof(params));
 697        params.key = ext->key;
 698        params.key_len = ext->key_len;
 699        params.cipher = cipher;
 700
 701        if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 702                params.seq = ext->rx_seq;
 703                params.seq_len = 6;
 704        }
 705
 706        return cfg80211_set_encryption(
 707                        rdev, dev,
 708                        !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 709                        addr, remove,
 710                        ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 711                        idx, &params);
 712}
 713
 714static int cfg80211_wext_giwencode(struct net_device *dev,
 715                                   struct iw_request_info *info,
 716                                   struct iw_point *erq, char *keybuf)
 717{
 718        struct wireless_dev *wdev = dev->ieee80211_ptr;
 719        int idx;
 720
 721        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 722            wdev->iftype != NL80211_IFTYPE_ADHOC)
 723                return -EOPNOTSUPP;
 724
 725        idx = erq->flags & IW_ENCODE_INDEX;
 726        if (idx == 0) {
 727                idx = wdev->wext.default_key;
 728                if (idx < 0)
 729                        idx = 0;
 730        } else if (idx < 1 || idx > 4)
 731                return -EINVAL;
 732        else
 733                idx--;
 734
 735        erq->flags = idx + 1;
 736
 737        if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 738                erq->flags |= IW_ENCODE_DISABLED;
 739                erq->length = 0;
 740                return 0;
 741        }
 742
 743        erq->length = min_t(size_t, erq->length,
 744                            wdev->wext.keys->params[idx].key_len);
 745        memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 746        erq->flags |= IW_ENCODE_ENABLED;
 747
 748        return 0;
 749}
 750
 751static int cfg80211_wext_siwfreq(struct net_device *dev,
 752                                 struct iw_request_info *info,
 753                                 struct iw_freq *wextfreq, char *extra)
 754{
 755        struct wireless_dev *wdev = dev->ieee80211_ptr;
 756        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 757        struct cfg80211_chan_def chandef = {
 758                .width = NL80211_CHAN_WIDTH_20_NOHT,
 759        };
 760        int freq;
 761
 762        switch (wdev->iftype) {
 763        case NL80211_IFTYPE_STATION:
 764                return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 765        case NL80211_IFTYPE_ADHOC:
 766                return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 767        case NL80211_IFTYPE_MONITOR:
 768                freq = cfg80211_wext_freq(wextfreq);
 769                if (freq < 0)
 770                        return freq;
 771                if (freq == 0)
 772                        return -EINVAL;
 773                chandef.center_freq1 = freq;
 774                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 775                if (!chandef.chan)
 776                        return -EINVAL;
 777                return cfg80211_set_monitor_channel(rdev, &chandef);
 778        case NL80211_IFTYPE_MESH_POINT:
 779                freq = cfg80211_wext_freq(wextfreq);
 780                if (freq < 0)
 781                        return freq;
 782                if (freq == 0)
 783                        return -EINVAL;
 784                chandef.center_freq1 = freq;
 785                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 786                if (!chandef.chan)
 787                        return -EINVAL;
 788                return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 789        default:
 790                return -EOPNOTSUPP;
 791        }
 792}
 793
 794static int cfg80211_wext_giwfreq(struct net_device *dev,
 795                                 struct iw_request_info *info,
 796                                 struct iw_freq *freq, char *extra)
 797{
 798        struct wireless_dev *wdev = dev->ieee80211_ptr;
 799        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 800        struct cfg80211_chan_def chandef;
 801        int ret;
 802
 803        switch (wdev->iftype) {
 804        case NL80211_IFTYPE_STATION:
 805                return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 806        case NL80211_IFTYPE_ADHOC:
 807                return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 808        case NL80211_IFTYPE_MONITOR:
 809                if (!rdev->ops->get_channel)
 810                        return -EINVAL;
 811
 812                ret = rdev_get_channel(rdev, wdev, &chandef);
 813                if (ret)
 814                        return ret;
 815                freq->m = chandef.chan->center_freq;
 816                freq->e = 6;
 817                return 0;
 818        default:
 819                return -EINVAL;
 820        }
 821}
 822
 823static int cfg80211_wext_siwtxpower(struct net_device *dev,
 824                                    struct iw_request_info *info,
 825                                    union iwreq_data *data, char *extra)
 826{
 827        struct wireless_dev *wdev = dev->ieee80211_ptr;
 828        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 829        enum nl80211_tx_power_setting type;
 830        int dbm = 0;
 831
 832        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 833                return -EINVAL;
 834        if (data->txpower.flags & IW_TXPOW_RANGE)
 835                return -EINVAL;
 836
 837        if (!rdev->ops->set_tx_power)
 838                return -EOPNOTSUPP;
 839
 840        /* only change when not disabling */
 841        if (!data->txpower.disabled) {
 842                rfkill_set_sw_state(rdev->rfkill, false);
 843
 844                if (data->txpower.fixed) {
 845                        /*
 846                         * wext doesn't support negative values, see
 847                         * below where it's for automatic
 848                         */
 849                        if (data->txpower.value < 0)
 850                                return -EINVAL;
 851                        dbm = data->txpower.value;
 852                        type = NL80211_TX_POWER_FIXED;
 853                        /* TODO: do regulatory check! */
 854                } else {
 855                        /*
 856                         * Automatic power level setting, max being the value
 857                         * passed in from userland.
 858                         */
 859                        if (data->txpower.value < 0) {
 860                                type = NL80211_TX_POWER_AUTOMATIC;
 861                        } else {
 862                                dbm = data->txpower.value;
 863                                type = NL80211_TX_POWER_LIMITED;
 864                        }
 865                }
 866        } else {
 867                rfkill_set_sw_state(rdev->rfkill, true);
 868                schedule_work(&rdev->rfkill_sync);
 869                return 0;
 870        }
 871
 872        return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 873}
 874
 875static int cfg80211_wext_giwtxpower(struct net_device *dev,
 876                                    struct iw_request_info *info,
 877                                    union iwreq_data *data, char *extra)
 878{
 879        struct wireless_dev *wdev = dev->ieee80211_ptr;
 880        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 881        int err, val;
 882
 883        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 884                return -EINVAL;
 885        if (data->txpower.flags & IW_TXPOW_RANGE)
 886                return -EINVAL;
 887
 888        if (!rdev->ops->get_tx_power)
 889                return -EOPNOTSUPP;
 890
 891        err = rdev_get_tx_power(rdev, wdev, &val);
 892        if (err)
 893                return err;
 894
 895        /* well... oh well */
 896        data->txpower.fixed = 1;
 897        data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 898        data->txpower.value = val;
 899        data->txpower.flags = IW_TXPOW_DBM;
 900
 901        return 0;
 902}
 903
 904static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 905                                 s32 auth_alg)
 906{
 907        int nr_alg = 0;
 908
 909        if (!auth_alg)
 910                return -EINVAL;
 911
 912        if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 913                         IW_AUTH_ALG_SHARED_KEY |
 914                         IW_AUTH_ALG_LEAP))
 915                return -EINVAL;
 916
 917        if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 918                nr_alg++;
 919                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 920        }
 921
 922        if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 923                nr_alg++;
 924                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 925        }
 926
 927        if (auth_alg & IW_AUTH_ALG_LEAP) {
 928                nr_alg++;
 929                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 930        }
 931
 932        if (nr_alg > 1)
 933                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 934
 935        return 0;
 936}
 937
 938static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 939{
 940        if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 941                             IW_AUTH_WPA_VERSION_WPA2|
 942                             IW_AUTH_WPA_VERSION_DISABLED))
 943                return -EINVAL;
 944
 945        if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 946            (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 947                             IW_AUTH_WPA_VERSION_WPA2)))
 948                return -EINVAL;
 949
 950        if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 951                wdev->wext.connect.crypto.wpa_versions &=
 952                        ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 953
 954        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 955                wdev->wext.connect.crypto.wpa_versions |=
 956                        NL80211_WPA_VERSION_1;
 957
 958        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 959                wdev->wext.connect.crypto.wpa_versions |=
 960                        NL80211_WPA_VERSION_2;
 961
 962        return 0;
 963}
 964
 965static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 966{
 967        if (cipher & IW_AUTH_CIPHER_WEP40)
 968                wdev->wext.connect.crypto.cipher_group =
 969                        WLAN_CIPHER_SUITE_WEP40;
 970        else if (cipher & IW_AUTH_CIPHER_WEP104)
 971                wdev->wext.connect.crypto.cipher_group =
 972                        WLAN_CIPHER_SUITE_WEP104;
 973        else if (cipher & IW_AUTH_CIPHER_TKIP)
 974                wdev->wext.connect.crypto.cipher_group =
 975                        WLAN_CIPHER_SUITE_TKIP;
 976        else if (cipher & IW_AUTH_CIPHER_CCMP)
 977                wdev->wext.connect.crypto.cipher_group =
 978                        WLAN_CIPHER_SUITE_CCMP;
 979        else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 980                wdev->wext.connect.crypto.cipher_group =
 981                        WLAN_CIPHER_SUITE_AES_CMAC;
 982        else if (cipher & IW_AUTH_CIPHER_NONE)
 983                wdev->wext.connect.crypto.cipher_group = 0;
 984        else
 985                return -EINVAL;
 986
 987        return 0;
 988}
 989
 990static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 991{
 992        int nr_ciphers = 0;
 993        u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 994
 995        if (cipher & IW_AUTH_CIPHER_WEP40) {
 996                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 997                nr_ciphers++;
 998        }
 999
1000        if (cipher & IW_AUTH_CIPHER_WEP104) {
1001                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1002                nr_ciphers++;
1003        }
1004
1005        if (cipher & IW_AUTH_CIPHER_TKIP) {
1006                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1007                nr_ciphers++;
1008        }
1009
1010        if (cipher & IW_AUTH_CIPHER_CCMP) {
1011                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1012                nr_ciphers++;
1013        }
1014
1015        if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1016                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1017                nr_ciphers++;
1018        }
1019
1020        BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1021
1022        wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1023
1024        return 0;
1025}
1026
1027
1028static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1029{
1030        int nr_akm_suites = 0;
1031
1032        if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1033                        IW_AUTH_KEY_MGMT_PSK))
1034                return -EINVAL;
1035
1036        if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1037                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1038                        WLAN_AKM_SUITE_8021X;
1039                nr_akm_suites++;
1040        }
1041
1042        if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1043                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1044                        WLAN_AKM_SUITE_PSK;
1045                nr_akm_suites++;
1046        }
1047
1048        wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1049
1050        return 0;
1051}
1052
1053static int cfg80211_wext_siwauth(struct net_device *dev,
1054                                 struct iw_request_info *info,
1055                                 struct iw_param *data, char *extra)
1056{
1057        struct wireless_dev *wdev = dev->ieee80211_ptr;
1058
1059        if (wdev->iftype != NL80211_IFTYPE_STATION)
1060                return -EOPNOTSUPP;
1061
1062        switch (data->flags & IW_AUTH_INDEX) {
1063        case IW_AUTH_PRIVACY_INVOKED:
1064                wdev->wext.connect.privacy = data->value;
1065                return 0;
1066        case IW_AUTH_WPA_VERSION:
1067                return cfg80211_set_wpa_version(wdev, data->value);
1068        case IW_AUTH_CIPHER_GROUP:
1069                return cfg80211_set_cipher_group(wdev, data->value);
1070        case IW_AUTH_KEY_MGMT:
1071                return cfg80211_set_key_mgt(wdev, data->value);
1072        case IW_AUTH_CIPHER_PAIRWISE:
1073                return cfg80211_set_cipher_pairwise(wdev, data->value);
1074        case IW_AUTH_80211_AUTH_ALG:
1075                return cfg80211_set_auth_alg(wdev, data->value);
1076        case IW_AUTH_WPA_ENABLED:
1077        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1078        case IW_AUTH_DROP_UNENCRYPTED:
1079        case IW_AUTH_MFP:
1080                return 0;
1081        default:
1082                return -EOPNOTSUPP;
1083        }
1084}
1085
1086static int cfg80211_wext_giwauth(struct net_device *dev,
1087                                 struct iw_request_info *info,
1088                                 struct iw_param *data, char *extra)
1089{
1090        /* XXX: what do we need? */
1091
1092        return -EOPNOTSUPP;
1093}
1094
1095static int cfg80211_wext_siwpower(struct net_device *dev,
1096                                  struct iw_request_info *info,
1097                                  struct iw_param *wrq, char *extra)
1098{
1099        struct wireless_dev *wdev = dev->ieee80211_ptr;
1100        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1101        bool ps = wdev->ps;
1102        int timeout = wdev->ps_timeout;
1103        int err;
1104
1105        if (wdev->iftype != NL80211_IFTYPE_STATION)
1106                return -EINVAL;
1107
1108        if (!rdev->ops->set_power_mgmt)
1109                return -EOPNOTSUPP;
1110
1111        if (wrq->disabled) {
1112                ps = false;
1113        } else {
1114                switch (wrq->flags & IW_POWER_MODE) {
1115                case IW_POWER_ON:       /* If not specified */
1116                case IW_POWER_MODE:     /* If set all mask */
1117                case IW_POWER_ALL_R:    /* If explicitely state all */
1118                        ps = true;
1119                        break;
1120                default:                /* Otherwise we ignore */
1121                        return -EINVAL;
1122                }
1123
1124                if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1125                        return -EINVAL;
1126
1127                if (wrq->flags & IW_POWER_TIMEOUT)
1128                        timeout = wrq->value / 1000;
1129        }
1130
1131        err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1132        if (err)
1133                return err;
1134
1135        wdev->ps = ps;
1136        wdev->ps_timeout = timeout;
1137
1138        return 0;
1139
1140}
1141
1142static int cfg80211_wext_giwpower(struct net_device *dev,
1143                                  struct iw_request_info *info,
1144                                  struct iw_param *wrq, char *extra)
1145{
1146        struct wireless_dev *wdev = dev->ieee80211_ptr;
1147
1148        wrq->disabled = !wdev->ps;
1149
1150        return 0;
1151}
1152
1153static int cfg80211_wds_wext_siwap(struct net_device *dev,
1154                                   struct iw_request_info *info,
1155                                   struct sockaddr *addr, char *extra)
1156{
1157        struct wireless_dev *wdev = dev->ieee80211_ptr;
1158        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1159        int err;
1160
1161        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1162                return -EINVAL;
1163
1164        if (addr->sa_family != ARPHRD_ETHER)
1165                return -EINVAL;
1166
1167        if (netif_running(dev))
1168                return -EBUSY;
1169
1170        if (!rdev->ops->set_wds_peer)
1171                return -EOPNOTSUPP;
1172
1173        err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1174        if (err)
1175                return err;
1176
1177        memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1178
1179        return 0;
1180}
1181
1182static int cfg80211_wds_wext_giwap(struct net_device *dev,
1183                                   struct iw_request_info *info,
1184                                   struct sockaddr *addr, char *extra)
1185{
1186        struct wireless_dev *wdev = dev->ieee80211_ptr;
1187
1188        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1189                return -EINVAL;
1190
1191        addr->sa_family = ARPHRD_ETHER;
1192        memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1193
1194        return 0;
1195}
1196
1197static int cfg80211_wext_siwrate(struct net_device *dev,
1198                                 struct iw_request_info *info,
1199                                 struct iw_param *rate, char *extra)
1200{
1201        struct wireless_dev *wdev = dev->ieee80211_ptr;
1202        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1203        struct cfg80211_bitrate_mask mask;
1204        u32 fixed, maxrate;
1205        struct ieee80211_supported_band *sband;
1206        int band, ridx;
1207        bool match = false;
1208
1209        if (!rdev->ops->set_bitrate_mask)
1210                return -EOPNOTSUPP;
1211
1212        memset(&mask, 0, sizeof(mask));
1213        fixed = 0;
1214        maxrate = (u32)-1;
1215
1216        if (rate->value < 0) {
1217                /* nothing */
1218        } else if (rate->fixed) {
1219                fixed = rate->value / 100000;
1220        } else {
1221                maxrate = rate->value / 100000;
1222        }
1223
1224        for (band = 0; band < NUM_NL80211_BANDS; band++) {
1225                sband = wdev->wiphy->bands[band];
1226                if (sband == NULL)
1227                        continue;
1228                for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1229                        struct ieee80211_rate *srate = &sband->bitrates[ridx];
1230                        if (fixed == srate->bitrate) {
1231                                mask.control[band].legacy = 1 << ridx;
1232                                match = true;
1233                                break;
1234                        }
1235                        if (srate->bitrate <= maxrate) {
1236                                mask.control[band].legacy |= 1 << ridx;
1237                                match = true;
1238                        }
1239                }
1240        }
1241
1242        if (!match)
1243                return -EINVAL;
1244
1245        return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1246}
1247
1248static int cfg80211_wext_giwrate(struct net_device *dev,
1249                                 struct iw_request_info *info,
1250                                 struct iw_param *rate, char *extra)
1251{
1252        struct wireless_dev *wdev = dev->ieee80211_ptr;
1253        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1254        struct station_info sinfo = {};
1255        u8 addr[ETH_ALEN];
1256        int err;
1257
1258        if (wdev->iftype != NL80211_IFTYPE_STATION)
1259                return -EOPNOTSUPP;
1260
1261        if (!rdev->ops->get_station)
1262                return -EOPNOTSUPP;
1263
1264        err = 0;
1265        wdev_lock(wdev);
1266        if (wdev->current_bss)
1267                memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1268        else
1269                err = -EOPNOTSUPP;
1270        wdev_unlock(wdev);
1271        if (err)
1272                return err;
1273
1274        err = rdev_get_station(rdev, dev, addr, &sinfo);
1275        if (err)
1276                return err;
1277
1278        if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1279                err = -EOPNOTSUPP;
1280                goto free;
1281        }
1282
1283        rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1284
1285free:
1286        cfg80211_sinfo_release_content(&sinfo);
1287        return err;
1288}
1289
1290/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1291static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1292{
1293        struct wireless_dev *wdev = dev->ieee80211_ptr;
1294        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1295        /* we are under RTNL - globally locked - so can use static structs */
1296        static struct iw_statistics wstats;
1297        static struct station_info sinfo = {};
1298        u8 bssid[ETH_ALEN];
1299
1300        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1301                return NULL;
1302
1303        if (!rdev->ops->get_station)
1304                return NULL;
1305
1306        /* Grab BSSID of current BSS, if any */
1307        wdev_lock(wdev);
1308        if (!wdev->current_bss) {
1309                wdev_unlock(wdev);
1310                return NULL;
1311        }
1312        memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1313        wdev_unlock(wdev);
1314
1315        memset(&sinfo, 0, sizeof(sinfo));
1316
1317        if (rdev_get_station(rdev, dev, bssid, &sinfo))
1318                return NULL;
1319
1320        memset(&wstats, 0, sizeof(wstats));
1321
1322        switch (rdev->wiphy.signal_type) {
1323        case CFG80211_SIGNAL_TYPE_MBM:
1324                if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1325                        int sig = sinfo.signal;
1326                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1327                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1328                        wstats.qual.updated |= IW_QUAL_DBM;
1329                        wstats.qual.level = sig;
1330                        if (sig < -110)
1331                                sig = -110;
1332                        else if (sig > -40)
1333                                sig = -40;
1334                        wstats.qual.qual = sig + 110;
1335                        break;
1336                }
1337                /* fall through */
1338        case CFG80211_SIGNAL_TYPE_UNSPEC:
1339                if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1340                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1341                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1342                        wstats.qual.level = sinfo.signal;
1343                        wstats.qual.qual = sinfo.signal;
1344                        break;
1345                }
1346                /* fall through */
1347        default:
1348                wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1349                wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1350        }
1351
1352        wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1353        if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1354                wstats.discard.misc = sinfo.rx_dropped_misc;
1355        if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1356                wstats.discard.retries = sinfo.tx_failed;
1357
1358        cfg80211_sinfo_release_content(&sinfo);
1359
1360        return &wstats;
1361}
1362
1363static int cfg80211_wext_siwap(struct net_device *dev,
1364                               struct iw_request_info *info,
1365                               struct sockaddr *ap_addr, char *extra)
1366{
1367        struct wireless_dev *wdev = dev->ieee80211_ptr;
1368
1369        switch (wdev->iftype) {
1370        case NL80211_IFTYPE_ADHOC:
1371                return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1372        case NL80211_IFTYPE_STATION:
1373                return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1374        case NL80211_IFTYPE_WDS:
1375                return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1376        default:
1377                return -EOPNOTSUPP;
1378        }
1379}
1380
1381static int cfg80211_wext_giwap(struct net_device *dev,
1382                               struct iw_request_info *info,
1383                               struct sockaddr *ap_addr, char *extra)
1384{
1385        struct wireless_dev *wdev = dev->ieee80211_ptr;
1386
1387        switch (wdev->iftype) {
1388        case NL80211_IFTYPE_ADHOC:
1389                return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1390        case NL80211_IFTYPE_STATION:
1391                return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1392        case NL80211_IFTYPE_WDS:
1393                return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1394        default:
1395                return -EOPNOTSUPP;
1396        }
1397}
1398
1399static int cfg80211_wext_siwessid(struct net_device *dev,
1400                                  struct iw_request_info *info,
1401                                  struct iw_point *data, char *ssid)
1402{
1403        struct wireless_dev *wdev = dev->ieee80211_ptr;
1404
1405        switch (wdev->iftype) {
1406        case NL80211_IFTYPE_ADHOC:
1407                return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1408        case NL80211_IFTYPE_STATION:
1409                return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1410        default:
1411                return -EOPNOTSUPP;
1412        }
1413}
1414
1415static int cfg80211_wext_giwessid(struct net_device *dev,
1416                                  struct iw_request_info *info,
1417                                  struct iw_point *data, char *ssid)
1418{
1419        struct wireless_dev *wdev = dev->ieee80211_ptr;
1420
1421        data->flags = 0;
1422        data->length = 0;
1423
1424        switch (wdev->iftype) {
1425        case NL80211_IFTYPE_ADHOC:
1426                return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1427        case NL80211_IFTYPE_STATION:
1428                return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1429        default:
1430                return -EOPNOTSUPP;
1431        }
1432}
1433
1434static int cfg80211_wext_siwpmksa(struct net_device *dev,
1435                                  struct iw_request_info *info,
1436                                  struct iw_point *data, char *extra)
1437{
1438        struct wireless_dev *wdev = dev->ieee80211_ptr;
1439        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1440        struct cfg80211_pmksa cfg_pmksa;
1441        struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1442
1443        memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1444
1445        if (wdev->iftype != NL80211_IFTYPE_STATION)
1446                return -EINVAL;
1447
1448        cfg_pmksa.bssid = pmksa->bssid.sa_data;
1449        cfg_pmksa.pmkid = pmksa->pmkid;
1450
1451        switch (pmksa->cmd) {
1452        case IW_PMKSA_ADD:
1453                if (!rdev->ops->set_pmksa)
1454                        return -EOPNOTSUPP;
1455
1456                return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1457
1458        case IW_PMKSA_REMOVE:
1459                if (!rdev->ops->del_pmksa)
1460                        return -EOPNOTSUPP;
1461
1462                return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1463
1464        case IW_PMKSA_FLUSH:
1465                if (!rdev->ops->flush_pmksa)
1466                        return -EOPNOTSUPP;
1467
1468                return rdev_flush_pmksa(rdev, dev);
1469
1470        default:
1471                return -EOPNOTSUPP;
1472        }
1473}
1474
1475static const iw_handler cfg80211_handlers[] = {
1476        [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1477        [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1478        [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1479        [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1480        [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1481        [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1482        [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1483        [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1484        [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1485        [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1486        [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1487        [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1488        [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1489        [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1490        [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1491        [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1492        [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1493        [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1494        [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1495        [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1496        [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1497        [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1498        [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1499        [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1500        [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1501        [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1502        [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1503        [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1504        [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1505        [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1506        [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1507        [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = (iw_handler) cfg80211_wext_siwpmksa,
1508};
1509
1510const struct iw_handler_def cfg80211_wext_handler = {
1511        .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1512        .standard               = cfg80211_handlers,
1513        .get_wireless_stats = cfg80211_wireless_stats,
1514};
1515