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        if (!changed)
 357                return 0;
 358
 359        err = rdev_set_wiphy_params(rdev, changed);
 360        if (err) {
 361                wdev->wiphy->retry_short = oshort;
 362                wdev->wiphy->retry_long = olong;
 363        }
 364
 365        return err;
 366}
 367
 368int cfg80211_wext_giwretry(struct net_device *dev,
 369                           struct iw_request_info *info,
 370                           struct iw_param *retry, char *extra)
 371{
 372        struct wireless_dev *wdev = dev->ieee80211_ptr;
 373
 374        retry->disabled = 0;
 375
 376        if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 377                /*
 378                 * First return short value, iwconfig will ask long value
 379                 * later if needed
 380                 */
 381                retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 382                retry->value = wdev->wiphy->retry_short;
 383                if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 384                        retry->flags |= IW_RETRY_LONG;
 385
 386                return 0;
 387        }
 388
 389        if (retry->flags & IW_RETRY_LONG) {
 390                retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 391                retry->value = wdev->wiphy->retry_long;
 392        }
 393
 394        return 0;
 395}
 396EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 397
 398static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 399                                     struct net_device *dev, bool pairwise,
 400                                     const u8 *addr, bool remove, bool tx_key,
 401                                     int idx, struct key_params *params)
 402{
 403        struct wireless_dev *wdev = dev->ieee80211_ptr;
 404        int err, i;
 405        bool rejoin = false;
 406
 407        if (pairwise && !addr)
 408                return -EINVAL;
 409
 410        /*
 411         * In many cases we won't actually need this, but it's better
 412         * to do it first in case the allocation fails. Don't use wext.
 413         */
 414        if (!wdev->wext.keys) {
 415                wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 416                                          GFP_KERNEL);
 417                if (!wdev->wext.keys)
 418                        return -ENOMEM;
 419                for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 420                        wdev->wext.keys->params[i].key =
 421                                wdev->wext.keys->data[i];
 422        }
 423
 424        if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 425            wdev->iftype != NL80211_IFTYPE_STATION)
 426                return -EOPNOTSUPP;
 427
 428        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 429                if (!wdev->current_bss)
 430                        return -ENOLINK;
 431
 432                if (!rdev->ops->set_default_mgmt_key)
 433                        return -EOPNOTSUPP;
 434
 435                if (idx < 4 || idx > 5)
 436                        return -EINVAL;
 437        } else if (idx < 0 || idx > 3)
 438                return -EINVAL;
 439
 440        if (remove) {
 441                err = 0;
 442                if (wdev->current_bss) {
 443                        /*
 444                         * If removing the current TX key, we will need to
 445                         * join a new IBSS without the privacy bit clear.
 446                         */
 447                        if (idx == wdev->wext.default_key &&
 448                            wdev->iftype == NL80211_IFTYPE_ADHOC) {
 449                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 450                                rejoin = true;
 451                        }
 452
 453                        if (!pairwise && addr &&
 454                            !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 455                                err = -ENOENT;
 456                        else
 457                                err = rdev_del_key(rdev, dev, idx, pairwise,
 458                                                   addr);
 459                }
 460                wdev->wext.connect.privacy = false;
 461                /*
 462                 * Applications using wireless extensions expect to be
 463                 * able to delete keys that don't exist, so allow that.
 464                 */
 465                if (err == -ENOENT)
 466                        err = 0;
 467                if (!err) {
 468                        if (!addr && idx < 4) {
 469                                memset(wdev->wext.keys->data[idx], 0,
 470                                       sizeof(wdev->wext.keys->data[idx]));
 471                                wdev->wext.keys->params[idx].key_len = 0;
 472                                wdev->wext.keys->params[idx].cipher = 0;
 473                        }
 474                        if (idx == wdev->wext.default_key)
 475                                wdev->wext.default_key = -1;
 476                        else if (idx == wdev->wext.default_mgmt_key)
 477                                wdev->wext.default_mgmt_key = -1;
 478                }
 479
 480                if (!err && rejoin)
 481                        err = cfg80211_ibss_wext_join(rdev, wdev);
 482
 483                return err;
 484        }
 485
 486        if (addr)
 487                tx_key = false;
 488
 489        if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 490                return -EINVAL;
 491
 492        err = 0;
 493        if (wdev->current_bss)
 494                err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 495        else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 496                 params->cipher != WLAN_CIPHER_SUITE_WEP104)
 497                return -EINVAL;
 498        if (err)
 499                return err;
 500
 501        /*
 502         * We only need to store WEP keys, since they're the only keys that
 503         * can be be set before a connection is established and persist after
 504         * disconnecting.
 505         */
 506        if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 507                      params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 508                wdev->wext.keys->params[idx] = *params;
 509                memcpy(wdev->wext.keys->data[idx],
 510                        params->key, params->key_len);
 511                wdev->wext.keys->params[idx].key =
 512                        wdev->wext.keys->data[idx];
 513        }
 514
 515        if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 516             params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 517            (tx_key || (!addr && wdev->wext.default_key == -1))) {
 518                if (wdev->current_bss) {
 519                        /*
 520                         * If we are getting a new TX key from not having
 521                         * had one before we need to join a new IBSS with
 522                         * the privacy bit set.
 523                         */
 524                        if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 525                            wdev->wext.default_key == -1) {
 526                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 527                                rejoin = true;
 528                        }
 529                        err = rdev_set_default_key(rdev, dev, idx, true, true);
 530                }
 531                if (!err) {
 532                        wdev->wext.default_key = idx;
 533                        if (rejoin)
 534                                err = cfg80211_ibss_wext_join(rdev, wdev);
 535                }
 536                return err;
 537        }
 538
 539        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 540            (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 541                if (wdev->current_bss)
 542                        err = rdev_set_default_mgmt_key(rdev, dev, idx);
 543                if (!err)
 544                        wdev->wext.default_mgmt_key = idx;
 545                return err;
 546        }
 547
 548        return 0;
 549}
 550
 551static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 552                                   struct net_device *dev, bool pairwise,
 553                                   const u8 *addr, bool remove, bool tx_key,
 554                                   int idx, struct key_params *params)
 555{
 556        int err;
 557
 558        wdev_lock(dev->ieee80211_ptr);
 559        err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 560                                        remove, tx_key, idx, params);
 561        wdev_unlock(dev->ieee80211_ptr);
 562
 563        return err;
 564}
 565
 566static int cfg80211_wext_siwencode(struct net_device *dev,
 567                                   struct iw_request_info *info,
 568                                   struct iw_point *erq, char *keybuf)
 569{
 570        struct wireless_dev *wdev = dev->ieee80211_ptr;
 571        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 572        int idx, err;
 573        bool remove = false;
 574        struct key_params params;
 575
 576        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 577            wdev->iftype != NL80211_IFTYPE_ADHOC)
 578                return -EOPNOTSUPP;
 579
 580        /* no use -- only MFP (set_default_mgmt_key) is optional */
 581        if (!rdev->ops->del_key ||
 582            !rdev->ops->add_key ||
 583            !rdev->ops->set_default_key)
 584                return -EOPNOTSUPP;
 585
 586        idx = erq->flags & IW_ENCODE_INDEX;
 587        if (idx == 0) {
 588                idx = wdev->wext.default_key;
 589                if (idx < 0)
 590                        idx = 0;
 591        } else if (idx < 1 || idx > 4)
 592                return -EINVAL;
 593        else
 594                idx--;
 595
 596        if (erq->flags & IW_ENCODE_DISABLED)
 597                remove = true;
 598        else if (erq->length == 0) {
 599                /* No key data - just set the default TX key index */
 600                err = 0;
 601                wdev_lock(wdev);
 602                if (wdev->current_bss)
 603                        err = rdev_set_default_key(rdev, dev, idx, true,
 604                                                   true);
 605                if (!err)
 606                        wdev->wext.default_key = idx;
 607                wdev_unlock(wdev);
 608                return err;
 609        }
 610
 611        memset(&params, 0, sizeof(params));
 612        params.key = keybuf;
 613        params.key_len = erq->length;
 614        if (erq->length == 5)
 615                params.cipher = WLAN_CIPHER_SUITE_WEP40;
 616        else if (erq->length == 13)
 617                params.cipher = WLAN_CIPHER_SUITE_WEP104;
 618        else if (!remove)
 619                return -EINVAL;
 620
 621        return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 622                                       wdev->wext.default_key == -1,
 623                                       idx, &params);
 624}
 625
 626static int cfg80211_wext_siwencodeext(struct net_device *dev,
 627                                      struct iw_request_info *info,
 628                                      struct iw_point *erq, char *extra)
 629{
 630        struct wireless_dev *wdev = dev->ieee80211_ptr;
 631        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 632        struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 633        const u8 *addr;
 634        int idx;
 635        bool remove = false;
 636        struct key_params params;
 637        u32 cipher;
 638
 639        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 640            wdev->iftype != NL80211_IFTYPE_ADHOC)
 641                return -EOPNOTSUPP;
 642
 643        /* no use -- only MFP (set_default_mgmt_key) is optional */
 644        if (!rdev->ops->del_key ||
 645            !rdev->ops->add_key ||
 646            !rdev->ops->set_default_key)
 647                return -EOPNOTSUPP;
 648
 649        switch (ext->alg) {
 650        case IW_ENCODE_ALG_NONE:
 651                remove = true;
 652                cipher = 0;
 653                break;
 654        case IW_ENCODE_ALG_WEP:
 655                if (ext->key_len == 5)
 656                        cipher = WLAN_CIPHER_SUITE_WEP40;
 657                else if (ext->key_len == 13)
 658                        cipher = WLAN_CIPHER_SUITE_WEP104;
 659                else
 660                        return -EINVAL;
 661                break;
 662        case IW_ENCODE_ALG_TKIP:
 663                cipher = WLAN_CIPHER_SUITE_TKIP;
 664                break;
 665        case IW_ENCODE_ALG_CCMP:
 666                cipher = WLAN_CIPHER_SUITE_CCMP;
 667                break;
 668        case IW_ENCODE_ALG_AES_CMAC:
 669                cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 670                break;
 671        default:
 672                return -EOPNOTSUPP;
 673        }
 674
 675        if (erq->flags & IW_ENCODE_DISABLED)
 676                remove = true;
 677
 678        idx = erq->flags & IW_ENCODE_INDEX;
 679        if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 680                if (idx < 4 || idx > 5) {
 681                        idx = wdev->wext.default_mgmt_key;
 682                        if (idx < 0)
 683                                return -EINVAL;
 684                } else
 685                        idx--;
 686        } else {
 687                if (idx < 1 || idx > 4) {
 688                        idx = wdev->wext.default_key;
 689                        if (idx < 0)
 690                                return -EINVAL;
 691                } else
 692                        idx--;
 693        }
 694
 695        addr = ext->addr.sa_data;
 696        if (is_broadcast_ether_addr(addr))
 697                addr = NULL;
 698
 699        memset(&params, 0, sizeof(params));
 700        params.key = ext->key;
 701        params.key_len = ext->key_len;
 702        params.cipher = cipher;
 703
 704        if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 705                params.seq = ext->rx_seq;
 706                params.seq_len = 6;
 707        }
 708
 709        return cfg80211_set_encryption(
 710                        rdev, dev,
 711                        !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 712                        addr, remove,
 713                        ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 714                        idx, &params);
 715}
 716
 717static int cfg80211_wext_giwencode(struct net_device *dev,
 718                                   struct iw_request_info *info,
 719                                   struct iw_point *erq, char *keybuf)
 720{
 721        struct wireless_dev *wdev = dev->ieee80211_ptr;
 722        int idx;
 723
 724        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 725            wdev->iftype != NL80211_IFTYPE_ADHOC)
 726                return -EOPNOTSUPP;
 727
 728        idx = erq->flags & IW_ENCODE_INDEX;
 729        if (idx == 0) {
 730                idx = wdev->wext.default_key;
 731                if (idx < 0)
 732                        idx = 0;
 733        } else if (idx < 1 || idx > 4)
 734                return -EINVAL;
 735        else
 736                idx--;
 737
 738        erq->flags = idx + 1;
 739
 740        if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 741                erq->flags |= IW_ENCODE_DISABLED;
 742                erq->length = 0;
 743                return 0;
 744        }
 745
 746        erq->length = min_t(size_t, erq->length,
 747                            wdev->wext.keys->params[idx].key_len);
 748        memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 749        erq->flags |= IW_ENCODE_ENABLED;
 750
 751        return 0;
 752}
 753
 754static int cfg80211_wext_siwfreq(struct net_device *dev,
 755                                 struct iw_request_info *info,
 756                                 struct iw_freq *wextfreq, char *extra)
 757{
 758        struct wireless_dev *wdev = dev->ieee80211_ptr;
 759        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 760        struct cfg80211_chan_def chandef = {
 761                .width = NL80211_CHAN_WIDTH_20_NOHT,
 762        };
 763        int freq;
 764
 765        switch (wdev->iftype) {
 766        case NL80211_IFTYPE_STATION:
 767                return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 768        case NL80211_IFTYPE_ADHOC:
 769                return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 770        case NL80211_IFTYPE_MONITOR:
 771                freq = cfg80211_wext_freq(wextfreq);
 772                if (freq < 0)
 773                        return freq;
 774                if (freq == 0)
 775                        return -EINVAL;
 776                chandef.center_freq1 = freq;
 777                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 778                if (!chandef.chan)
 779                        return -EINVAL;
 780                return cfg80211_set_monitor_channel(rdev, &chandef);
 781        case NL80211_IFTYPE_MESH_POINT:
 782                freq = cfg80211_wext_freq(wextfreq);
 783                if (freq < 0)
 784                        return freq;
 785                if (freq == 0)
 786                        return -EINVAL;
 787                chandef.center_freq1 = freq;
 788                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 789                if (!chandef.chan)
 790                        return -EINVAL;
 791                return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 792        default:
 793                return -EOPNOTSUPP;
 794        }
 795}
 796
 797static int cfg80211_wext_giwfreq(struct net_device *dev,
 798                                 struct iw_request_info *info,
 799                                 struct iw_freq *freq, 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        int ret;
 805
 806        switch (wdev->iftype) {
 807        case NL80211_IFTYPE_STATION:
 808                return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 809        case NL80211_IFTYPE_ADHOC:
 810                return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 811        case NL80211_IFTYPE_MONITOR:
 812                if (!rdev->ops->get_channel)
 813                        return -EINVAL;
 814
 815                ret = rdev_get_channel(rdev, wdev, &chandef);
 816                if (ret)
 817                        return ret;
 818                freq->m = chandef.chan->center_freq;
 819                freq->e = 6;
 820                return 0;
 821        default:
 822                return -EINVAL;
 823        }
 824}
 825
 826static int cfg80211_wext_siwtxpower(struct net_device *dev,
 827                                    struct iw_request_info *info,
 828                                    union iwreq_data *data, char *extra)
 829{
 830        struct wireless_dev *wdev = dev->ieee80211_ptr;
 831        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 832        enum nl80211_tx_power_setting type;
 833        int dbm = 0;
 834
 835        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 836                return -EINVAL;
 837        if (data->txpower.flags & IW_TXPOW_RANGE)
 838                return -EINVAL;
 839
 840        if (!rdev->ops->set_tx_power)
 841                return -EOPNOTSUPP;
 842
 843        /* only change when not disabling */
 844        if (!data->txpower.disabled) {
 845                rfkill_set_sw_state(rdev->rfkill, false);
 846
 847                if (data->txpower.fixed) {
 848                        /*
 849                         * wext doesn't support negative values, see
 850                         * below where it's for automatic
 851                         */
 852                        if (data->txpower.value < 0)
 853                                return -EINVAL;
 854                        dbm = data->txpower.value;
 855                        type = NL80211_TX_POWER_FIXED;
 856                        /* TODO: do regulatory check! */
 857                } else {
 858                        /*
 859                         * Automatic power level setting, max being the value
 860                         * passed in from userland.
 861                         */
 862                        if (data->txpower.value < 0) {
 863                                type = NL80211_TX_POWER_AUTOMATIC;
 864                        } else {
 865                                dbm = data->txpower.value;
 866                                type = NL80211_TX_POWER_LIMITED;
 867                        }
 868                }
 869        } else {
 870                rfkill_set_sw_state(rdev->rfkill, true);
 871                schedule_work(&rdev->rfkill_sync);
 872                return 0;
 873        }
 874
 875        return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 876}
 877
 878static int cfg80211_wext_giwtxpower(struct net_device *dev,
 879                                    struct iw_request_info *info,
 880                                    union iwreq_data *data, char *extra)
 881{
 882        struct wireless_dev *wdev = dev->ieee80211_ptr;
 883        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 884        int err, val;
 885
 886        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 887                return -EINVAL;
 888        if (data->txpower.flags & IW_TXPOW_RANGE)
 889                return -EINVAL;
 890
 891        if (!rdev->ops->get_tx_power)
 892                return -EOPNOTSUPP;
 893
 894        err = rdev_get_tx_power(rdev, wdev, &val);
 895        if (err)
 896                return err;
 897
 898        /* well... oh well */
 899        data->txpower.fixed = 1;
 900        data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 901        data->txpower.value = val;
 902        data->txpower.flags = IW_TXPOW_DBM;
 903
 904        return 0;
 905}
 906
 907static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 908                                 s32 auth_alg)
 909{
 910        int nr_alg = 0;
 911
 912        if (!auth_alg)
 913                return -EINVAL;
 914
 915        if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 916                         IW_AUTH_ALG_SHARED_KEY |
 917                         IW_AUTH_ALG_LEAP))
 918                return -EINVAL;
 919
 920        if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 921                nr_alg++;
 922                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 923        }
 924
 925        if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 926                nr_alg++;
 927                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 928        }
 929
 930        if (auth_alg & IW_AUTH_ALG_LEAP) {
 931                nr_alg++;
 932                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 933        }
 934
 935        if (nr_alg > 1)
 936                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 937
 938        return 0;
 939}
 940
 941static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 942{
 943        if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 944                             IW_AUTH_WPA_VERSION_WPA2|
 945                             IW_AUTH_WPA_VERSION_DISABLED))
 946                return -EINVAL;
 947
 948        if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 949            (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 950                             IW_AUTH_WPA_VERSION_WPA2)))
 951                return -EINVAL;
 952
 953        if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 954                wdev->wext.connect.crypto.wpa_versions &=
 955                        ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 956
 957        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 958                wdev->wext.connect.crypto.wpa_versions |=
 959                        NL80211_WPA_VERSION_1;
 960
 961        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 962                wdev->wext.connect.crypto.wpa_versions |=
 963                        NL80211_WPA_VERSION_2;
 964
 965        return 0;
 966}
 967
 968static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 969{
 970        if (cipher & IW_AUTH_CIPHER_WEP40)
 971                wdev->wext.connect.crypto.cipher_group =
 972                        WLAN_CIPHER_SUITE_WEP40;
 973        else if (cipher & IW_AUTH_CIPHER_WEP104)
 974                wdev->wext.connect.crypto.cipher_group =
 975                        WLAN_CIPHER_SUITE_WEP104;
 976        else if (cipher & IW_AUTH_CIPHER_TKIP)
 977                wdev->wext.connect.crypto.cipher_group =
 978                        WLAN_CIPHER_SUITE_TKIP;
 979        else if (cipher & IW_AUTH_CIPHER_CCMP)
 980                wdev->wext.connect.crypto.cipher_group =
 981                        WLAN_CIPHER_SUITE_CCMP;
 982        else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 983                wdev->wext.connect.crypto.cipher_group =
 984                        WLAN_CIPHER_SUITE_AES_CMAC;
 985        else if (cipher & IW_AUTH_CIPHER_NONE)
 986                wdev->wext.connect.crypto.cipher_group = 0;
 987        else
 988                return -EINVAL;
 989
 990        return 0;
 991}
 992
 993static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 994{
 995        int nr_ciphers = 0;
 996        u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 997
 998        if (cipher & IW_AUTH_CIPHER_WEP40) {
 999                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1000                nr_ciphers++;
1001        }
1002
1003        if (cipher & IW_AUTH_CIPHER_WEP104) {
1004                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1005                nr_ciphers++;
1006        }
1007
1008        if (cipher & IW_AUTH_CIPHER_TKIP) {
1009                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1010                nr_ciphers++;
1011        }
1012
1013        if (cipher & IW_AUTH_CIPHER_CCMP) {
1014                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1015                nr_ciphers++;
1016        }
1017
1018        if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1019                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1020                nr_ciphers++;
1021        }
1022
1023        BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1024
1025        wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1026
1027        return 0;
1028}
1029
1030
1031static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1032{
1033        int nr_akm_suites = 0;
1034
1035        if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1036                        IW_AUTH_KEY_MGMT_PSK))
1037                return -EINVAL;
1038
1039        if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1040                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1041                        WLAN_AKM_SUITE_8021X;
1042                nr_akm_suites++;
1043        }
1044
1045        if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1046                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1047                        WLAN_AKM_SUITE_PSK;
1048                nr_akm_suites++;
1049        }
1050
1051        wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1052
1053        return 0;
1054}
1055
1056static int cfg80211_wext_siwauth(struct net_device *dev,
1057                                 struct iw_request_info *info,
1058                                 struct iw_param *data, char *extra)
1059{
1060        struct wireless_dev *wdev = dev->ieee80211_ptr;
1061
1062        if (wdev->iftype != NL80211_IFTYPE_STATION)
1063                return -EOPNOTSUPP;
1064
1065        switch (data->flags & IW_AUTH_INDEX) {
1066        case IW_AUTH_PRIVACY_INVOKED:
1067                wdev->wext.connect.privacy = data->value;
1068                return 0;
1069        case IW_AUTH_WPA_VERSION:
1070                return cfg80211_set_wpa_version(wdev, data->value);
1071        case IW_AUTH_CIPHER_GROUP:
1072                return cfg80211_set_cipher_group(wdev, data->value);
1073        case IW_AUTH_KEY_MGMT:
1074                return cfg80211_set_key_mgt(wdev, data->value);
1075        case IW_AUTH_CIPHER_PAIRWISE:
1076                return cfg80211_set_cipher_pairwise(wdev, data->value);
1077        case IW_AUTH_80211_AUTH_ALG:
1078                return cfg80211_set_auth_alg(wdev, data->value);
1079        case IW_AUTH_WPA_ENABLED:
1080        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1081        case IW_AUTH_DROP_UNENCRYPTED:
1082        case IW_AUTH_MFP:
1083                return 0;
1084        default:
1085                return -EOPNOTSUPP;
1086        }
1087}
1088
1089static int cfg80211_wext_giwauth(struct net_device *dev,
1090                                 struct iw_request_info *info,
1091                                 struct iw_param *data, char *extra)
1092{
1093        /* XXX: what do we need? */
1094
1095        return -EOPNOTSUPP;
1096}
1097
1098static int cfg80211_wext_siwpower(struct net_device *dev,
1099                                  struct iw_request_info *info,
1100                                  struct iw_param *wrq, char *extra)
1101{
1102        struct wireless_dev *wdev = dev->ieee80211_ptr;
1103        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1104        bool ps = wdev->ps;
1105        int timeout = wdev->ps_timeout;
1106        int err;
1107
1108        if (wdev->iftype != NL80211_IFTYPE_STATION)
1109                return -EINVAL;
1110
1111        if (!rdev->ops->set_power_mgmt)
1112                return -EOPNOTSUPP;
1113
1114        if (wrq->disabled) {
1115                ps = false;
1116        } else {
1117                switch (wrq->flags & IW_POWER_MODE) {
1118                case IW_POWER_ON:       /* If not specified */
1119                case IW_POWER_MODE:     /* If set all mask */
1120                case IW_POWER_ALL_R:    /* If explicitely state all */
1121                        ps = true;
1122                        break;
1123                default:                /* Otherwise we ignore */
1124                        return -EINVAL;
1125                }
1126
1127                if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1128                        return -EINVAL;
1129
1130                if (wrq->flags & IW_POWER_TIMEOUT)
1131                        timeout = wrq->value / 1000;
1132        }
1133
1134        err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1135        if (err)
1136                return err;
1137
1138        wdev->ps = ps;
1139        wdev->ps_timeout = timeout;
1140
1141        return 0;
1142
1143}
1144
1145static int cfg80211_wext_giwpower(struct net_device *dev,
1146                                  struct iw_request_info *info,
1147                                  struct iw_param *wrq, char *extra)
1148{
1149        struct wireless_dev *wdev = dev->ieee80211_ptr;
1150
1151        wrq->disabled = !wdev->ps;
1152
1153        return 0;
1154}
1155
1156static int cfg80211_wds_wext_siwap(struct net_device *dev,
1157                                   struct iw_request_info *info,
1158                                   struct sockaddr *addr, char *extra)
1159{
1160        struct wireless_dev *wdev = dev->ieee80211_ptr;
1161        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1162        int err;
1163
1164        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1165                return -EINVAL;
1166
1167        if (addr->sa_family != ARPHRD_ETHER)
1168                return -EINVAL;
1169
1170        if (netif_running(dev))
1171                return -EBUSY;
1172
1173        if (!rdev->ops->set_wds_peer)
1174                return -EOPNOTSUPP;
1175
1176        err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1177        if (err)
1178                return err;
1179
1180        memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1181
1182        return 0;
1183}
1184
1185static int cfg80211_wds_wext_giwap(struct net_device *dev,
1186                                   struct iw_request_info *info,
1187                                   struct sockaddr *addr, char *extra)
1188{
1189        struct wireless_dev *wdev = dev->ieee80211_ptr;
1190
1191        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1192                return -EINVAL;
1193
1194        addr->sa_family = ARPHRD_ETHER;
1195        memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1196
1197        return 0;
1198}
1199
1200static int cfg80211_wext_siwrate(struct net_device *dev,
1201                                 struct iw_request_info *info,
1202                                 struct iw_param *rate, char *extra)
1203{
1204        struct wireless_dev *wdev = dev->ieee80211_ptr;
1205        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1206        struct cfg80211_bitrate_mask mask;
1207        u32 fixed, maxrate;
1208        struct ieee80211_supported_band *sband;
1209        int band, ridx;
1210        bool match = false;
1211
1212        if (!rdev->ops->set_bitrate_mask)
1213                return -EOPNOTSUPP;
1214
1215        memset(&mask, 0, sizeof(mask));
1216        fixed = 0;
1217        maxrate = (u32)-1;
1218
1219        if (rate->value < 0) {
1220                /* nothing */
1221        } else if (rate->fixed) {
1222                fixed = rate->value / 100000;
1223        } else {
1224                maxrate = rate->value / 100000;
1225        }
1226
1227        for (band = 0; band < NUM_NL80211_BANDS; band++) {
1228                sband = wdev->wiphy->bands[band];
1229                if (sband == NULL)
1230                        continue;
1231                for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1232                        struct ieee80211_rate *srate = &sband->bitrates[ridx];
1233                        if (fixed == srate->bitrate) {
1234                                mask.control[band].legacy = 1 << ridx;
1235                                match = true;
1236                                break;
1237                        }
1238                        if (srate->bitrate <= maxrate) {
1239                                mask.control[band].legacy |= 1 << ridx;
1240                                match = true;
1241                        }
1242                }
1243        }
1244
1245        if (!match)
1246                return -EINVAL;
1247
1248        return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1249}
1250
1251static int cfg80211_wext_giwrate(struct net_device *dev,
1252                                 struct iw_request_info *info,
1253                                 struct iw_param *rate, char *extra)
1254{
1255        struct wireless_dev *wdev = dev->ieee80211_ptr;
1256        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1257        /* we are under RTNL - globally locked - so can use a static struct */
1258        static struct station_info sinfo;
1259        u8 addr[ETH_ALEN];
1260        int err;
1261
1262        if (wdev->iftype != NL80211_IFTYPE_STATION)
1263                return -EOPNOTSUPP;
1264
1265        if (!rdev->ops->get_station)
1266                return -EOPNOTSUPP;
1267
1268        err = 0;
1269        wdev_lock(wdev);
1270        if (wdev->current_bss)
1271                memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1272        else
1273                err = -EOPNOTSUPP;
1274        wdev_unlock(wdev);
1275        if (err)
1276                return err;
1277
1278        err = rdev_get_station(rdev, dev, addr, &sinfo);
1279        if (err)
1280                return err;
1281
1282        if (!(sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)))
1283                return -EOPNOTSUPP;
1284
1285        rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1286
1287        return 0;
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(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        case CFG80211_SIGNAL_TYPE_UNSPEC:
1338                if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1339                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1340                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1341                        wstats.qual.level = sinfo.signal;
1342                        wstats.qual.qual = sinfo.signal;
1343                        break;
1344                }
1345        default:
1346                wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1347                wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1348        }
1349
1350        wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1351        if (sinfo.filled & BIT(NL80211_STA_INFO_RX_DROP_MISC))
1352                wstats.discard.misc = sinfo.rx_dropped_misc;
1353        if (sinfo.filled & BIT(NL80211_STA_INFO_TX_FAILED))
1354                wstats.discard.retries = sinfo.tx_failed;
1355
1356        return &wstats;
1357}
1358
1359static int cfg80211_wext_siwap(struct net_device *dev,
1360                               struct iw_request_info *info,
1361                               struct sockaddr *ap_addr, char *extra)
1362{
1363        struct wireless_dev *wdev = dev->ieee80211_ptr;
1364
1365        switch (wdev->iftype) {
1366        case NL80211_IFTYPE_ADHOC:
1367                return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1368        case NL80211_IFTYPE_STATION:
1369                return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1370        case NL80211_IFTYPE_WDS:
1371                return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1372        default:
1373                return -EOPNOTSUPP;
1374        }
1375}
1376
1377static int cfg80211_wext_giwap(struct net_device *dev,
1378                               struct iw_request_info *info,
1379                               struct sockaddr *ap_addr, char *extra)
1380{
1381        struct wireless_dev *wdev = dev->ieee80211_ptr;
1382
1383        switch (wdev->iftype) {
1384        case NL80211_IFTYPE_ADHOC:
1385                return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1386        case NL80211_IFTYPE_STATION:
1387                return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1388        case NL80211_IFTYPE_WDS:
1389                return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1390        default:
1391                return -EOPNOTSUPP;
1392        }
1393}
1394
1395static int cfg80211_wext_siwessid(struct net_device *dev,
1396                                  struct iw_request_info *info,
1397                                  struct iw_point *data, char *ssid)
1398{
1399        struct wireless_dev *wdev = dev->ieee80211_ptr;
1400
1401        switch (wdev->iftype) {
1402        case NL80211_IFTYPE_ADHOC:
1403                return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1404        case NL80211_IFTYPE_STATION:
1405                return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1406        default:
1407                return -EOPNOTSUPP;
1408        }
1409}
1410
1411static int cfg80211_wext_giwessid(struct net_device *dev,
1412                                  struct iw_request_info *info,
1413                                  struct iw_point *data, char *ssid)
1414{
1415        struct wireless_dev *wdev = dev->ieee80211_ptr;
1416
1417        data->flags = 0;
1418        data->length = 0;
1419
1420        switch (wdev->iftype) {
1421        case NL80211_IFTYPE_ADHOC:
1422                return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1423        case NL80211_IFTYPE_STATION:
1424                return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1425        default:
1426                return -EOPNOTSUPP;
1427        }
1428}
1429
1430static int cfg80211_wext_siwpmksa(struct net_device *dev,
1431                                  struct iw_request_info *info,
1432                                  struct iw_point *data, char *extra)
1433{
1434        struct wireless_dev *wdev = dev->ieee80211_ptr;
1435        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1436        struct cfg80211_pmksa cfg_pmksa;
1437        struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1438
1439        memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1440
1441        if (wdev->iftype != NL80211_IFTYPE_STATION)
1442                return -EINVAL;
1443
1444        cfg_pmksa.bssid = pmksa->bssid.sa_data;
1445        cfg_pmksa.pmkid = pmksa->pmkid;
1446
1447        switch (pmksa->cmd) {
1448        case IW_PMKSA_ADD:
1449                if (!rdev->ops->set_pmksa)
1450                        return -EOPNOTSUPP;
1451
1452                return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1453
1454        case IW_PMKSA_REMOVE:
1455                if (!rdev->ops->del_pmksa)
1456                        return -EOPNOTSUPP;
1457
1458                return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1459
1460        case IW_PMKSA_FLUSH:
1461                if (!rdev->ops->flush_pmksa)
1462                        return -EOPNOTSUPP;
1463
1464                return rdev_flush_pmksa(rdev, dev);
1465
1466        default:
1467                return -EOPNOTSUPP;
1468        }
1469}
1470
1471static const iw_handler cfg80211_handlers[] = {
1472        [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1473        [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1474        [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1475        [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1476        [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1477        [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1478        [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1479        [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1480        [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1481        [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1482        [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1483        [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1484        [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1485        [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1486        [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1487        [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1488        [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1489        [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1490        [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1491        [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1492        [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1493        [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1494        [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1495        [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1496        [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1497        [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1498        [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1499        [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1500        [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1501        [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1502        [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1503        [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = (iw_handler) cfg80211_wext_siwpmksa,
1504};
1505
1506const struct iw_handler_def cfg80211_wext_handler = {
1507        .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1508        .standard               = cfg80211_handlers,
1509        .get_wireless_stats = cfg80211_wireless_stats,
1510};
1511