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