1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * cfg80211 - wext compat code 4 * 5 * This is temporary code until all wireless functionality is migrated 6 * into cfg80211, when that happens all the exports here go away and 7 * we directly assign the wireless handlers of wireless interfaces. 8 * 9 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net> 10 * Copyright (C) 2019-2022 Intel Corporation 11 */ 12 13 #include <linux/export.h> 14 #include <linux/wireless.h> 15 #include <linux/nl80211.h> 16 #include <linux/if_arp.h> 17 #include <linux/etherdevice.h> 18 #include <linux/slab.h> 19 #include <net/iw_handler.h> 20 #include <net/cfg80211.h> 21 #include <net/cfg80211-wext.h> 22 #include "wext-compat.h" 23 #include "core.h" 24 #include "rdev-ops.h" 25 26 int cfg80211_wext_giwname(struct net_device *dev, 27 struct iw_request_info *info, 28 union iwreq_data *wrqu, char *extra) 29 { 30 strcpy(wrqu->name, "IEEE 802.11"); 31 return 0; 32 } 33 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname); 34 35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 36 union iwreq_data *wrqu, char *extra) 37 { 38 __u32 *mode = &wrqu->mode; 39 struct wireless_dev *wdev = dev->ieee80211_ptr; 40 struct cfg80211_registered_device *rdev; 41 struct vif_params vifparams; 42 enum nl80211_iftype type; 43 int ret; 44 45 rdev = wiphy_to_rdev(wdev->wiphy); 46 47 switch (*mode) { 48 case IW_MODE_INFRA: 49 type = NL80211_IFTYPE_STATION; 50 break; 51 case IW_MODE_ADHOC: 52 type = NL80211_IFTYPE_ADHOC; 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 wiphy_lock(wdev->wiphy); 67 ret = cfg80211_change_iface(rdev, dev, type, &vifparams); 68 wiphy_unlock(wdev->wiphy); 69 70 return ret; 71 } 72 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode); 73 74 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 75 union iwreq_data *wrqu, char *extra) 76 { 77 __u32 *mode = &wrqu->mode; 78 struct wireless_dev *wdev = dev->ieee80211_ptr; 79 80 if (!wdev) 81 return -EOPNOTSUPP; 82 83 switch (wdev->iftype) { 84 case NL80211_IFTYPE_AP: 85 *mode = IW_MODE_MASTER; 86 break; 87 case NL80211_IFTYPE_STATION: 88 *mode = IW_MODE_INFRA; 89 break; 90 case NL80211_IFTYPE_ADHOC: 91 *mode = IW_MODE_ADHOC; 92 break; 93 case NL80211_IFTYPE_MONITOR: 94 *mode = IW_MODE_MONITOR; 95 break; 96 case NL80211_IFTYPE_WDS: 97 *mode = IW_MODE_REPEAT; 98 break; 99 case NL80211_IFTYPE_AP_VLAN: 100 *mode = IW_MODE_SECOND; /* FIXME */ 101 break; 102 default: 103 *mode = IW_MODE_AUTO; 104 break; 105 } 106 return 0; 107 } 108 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode); 109 110 111 int cfg80211_wext_giwrange(struct net_device *dev, 112 struct iw_request_info *info, 113 union iwreq_data *wrqu, char *extra) 114 { 115 struct iw_point *data = &wrqu->data; 116 struct wireless_dev *wdev = dev->ieee80211_ptr; 117 struct iw_range *range = (struct iw_range *) extra; 118 enum nl80211_band band; 119 int i, c = 0; 120 121 if (!wdev) 122 return -EOPNOTSUPP; 123 124 data->length = sizeof(struct iw_range); 125 memset(range, 0, sizeof(struct iw_range)); 126 127 range->we_version_compiled = WIRELESS_EXT; 128 range->we_version_source = 21; 129 range->retry_capa = IW_RETRY_LIMIT; 130 range->retry_flags = IW_RETRY_LIMIT; 131 range->min_retry = 0; 132 range->max_retry = 255; 133 range->min_rts = 0; 134 range->max_rts = 2347; 135 range->min_frag = 256; 136 range->max_frag = 2346; 137 138 range->max_encoding_tokens = 4; 139 140 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 141 142 switch (wdev->wiphy->signal_type) { 143 case CFG80211_SIGNAL_TYPE_NONE: 144 break; 145 case CFG80211_SIGNAL_TYPE_MBM: 146 range->max_qual.level = (u8)-110; 147 range->max_qual.qual = 70; 148 range->avg_qual.qual = 35; 149 range->max_qual.updated |= IW_QUAL_DBM; 150 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 151 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 152 break; 153 case CFG80211_SIGNAL_TYPE_UNSPEC: 154 range->max_qual.level = 100; 155 range->max_qual.qual = 100; 156 range->avg_qual.qual = 50; 157 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 158 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 159 break; 160 } 161 162 range->avg_qual.level = range->max_qual.level / 2; 163 range->avg_qual.noise = range->max_qual.noise / 2; 164 range->avg_qual.updated = range->max_qual.updated; 165 166 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) { 167 switch (wdev->wiphy->cipher_suites[i]) { 168 case WLAN_CIPHER_SUITE_TKIP: 169 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP | 170 IW_ENC_CAPA_WPA); 171 break; 172 173 case WLAN_CIPHER_SUITE_CCMP: 174 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP | 175 IW_ENC_CAPA_WPA2); 176 break; 177 178 case WLAN_CIPHER_SUITE_WEP40: 179 range->encoding_size[range->num_encoding_sizes++] = 180 WLAN_KEY_LEN_WEP40; 181 break; 182 183 case WLAN_CIPHER_SUITE_WEP104: 184 range->encoding_size[range->num_encoding_sizes++] = 185 WLAN_KEY_LEN_WEP104; 186 break; 187 } 188 } 189 190 for (band = 0; band < NUM_NL80211_BANDS; band ++) { 191 struct ieee80211_supported_band *sband; 192 193 sband = wdev->wiphy->bands[band]; 194 195 if (!sband) 196 continue; 197 198 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { 199 struct ieee80211_channel *chan = &sband->channels[i]; 200 201 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { 202 range->freq[c].i = 203 ieee80211_frequency_to_channel( 204 chan->center_freq); 205 range->freq[c].m = chan->center_freq; 206 range->freq[c].e = 6; 207 c++; 208 } 209 } 210 } 211 range->num_channels = c; 212 range->num_frequency = c; 213 214 IW_EVENT_CAPA_SET_KERNEL(range->event_capa); 215 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); 216 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); 217 218 if (wdev->wiphy->max_scan_ssids > 0) 219 range->scan_capa |= IW_SCAN_CAPA_ESSID; 220 221 return 0; 222 } 223 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange); 224 225 226 /** 227 * cfg80211_wext_freq - get wext frequency for non-"auto" 228 * @freq: the wext freq encoding 229 * 230 * Returns a frequency, or a negative error code, or 0 for auto. 231 */ 232 int cfg80211_wext_freq(struct iw_freq *freq) 233 { 234 /* 235 * Parse frequency - return 0 for auto and 236 * -EINVAL for impossible things. 237 */ 238 if (freq->e == 0) { 239 enum nl80211_band band = NL80211_BAND_2GHZ; 240 if (freq->m < 0) 241 return 0; 242 if (freq->m > 14) 243 band = NL80211_BAND_5GHZ; 244 return ieee80211_channel_to_frequency(freq->m, band); 245 } else { 246 int i, div = 1000000; 247 for (i = 0; i < freq->e; i++) 248 div /= 10; 249 if (div <= 0) 250 return -EINVAL; 251 return freq->m / div; 252 } 253 } 254 255 int cfg80211_wext_siwrts(struct net_device *dev, 256 struct iw_request_info *info, 257 union iwreq_data *wrqu, char *extra) 258 { 259 struct iw_param *rts = &wrqu->rts; 260 struct wireless_dev *wdev = dev->ieee80211_ptr; 261 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 262 u32 orts = wdev->wiphy->rts_threshold; 263 int err; 264 265 wiphy_lock(&rdev->wiphy); 266 if (rts->disabled || !rts->fixed) { 267 wdev->wiphy->rts_threshold = (u32) -1; 268 } else if (rts->value < 0) { 269 err = -EINVAL; 270 goto out; 271 } else { 272 wdev->wiphy->rts_threshold = rts->value; 273 } 274 275 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD); 276 277 if (err) 278 wdev->wiphy->rts_threshold = orts; 279 280 out: 281 wiphy_unlock(&rdev->wiphy); 282 return err; 283 } 284 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts); 285 286 int cfg80211_wext_giwrts(struct net_device *dev, 287 struct iw_request_info *info, 288 union iwreq_data *wrqu, char *extra) 289 { 290 struct iw_param *rts = &wrqu->rts; 291 struct wireless_dev *wdev = dev->ieee80211_ptr; 292 293 rts->value = wdev->wiphy->rts_threshold; 294 rts->disabled = rts->value == (u32) -1; 295 rts->fixed = 1; 296 297 return 0; 298 } 299 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts); 300 301 int cfg80211_wext_siwfrag(struct net_device *dev, 302 struct iw_request_info *info, 303 union iwreq_data *wrqu, char *extra) 304 { 305 struct iw_param *frag = &wrqu->frag; 306 struct wireless_dev *wdev = dev->ieee80211_ptr; 307 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 308 u32 ofrag = wdev->wiphy->frag_threshold; 309 int err; 310 311 wiphy_lock(&rdev->wiphy); 312 if (frag->disabled || !frag->fixed) { 313 wdev->wiphy->frag_threshold = (u32) -1; 314 } else if (frag->value < 256) { 315 err = -EINVAL; 316 goto out; 317 } else { 318 /* Fragment length must be even, so strip LSB. */ 319 wdev->wiphy->frag_threshold = frag->value & ~0x1; 320 } 321 322 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD); 323 if (err) 324 wdev->wiphy->frag_threshold = ofrag; 325 out: 326 wiphy_unlock(&rdev->wiphy); 327 328 return err; 329 } 330 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag); 331 332 int cfg80211_wext_giwfrag(struct net_device *dev, 333 struct iw_request_info *info, 334 union iwreq_data *wrqu, char *extra) 335 { 336 struct iw_param *frag = &wrqu->frag; 337 struct wireless_dev *wdev = dev->ieee80211_ptr; 338 339 frag->value = wdev->wiphy->frag_threshold; 340 frag->disabled = frag->value == (u32) -1; 341 frag->fixed = 1; 342 343 return 0; 344 } 345 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag); 346 347 static int cfg80211_wext_siwretry(struct net_device *dev, 348 struct iw_request_info *info, 349 union iwreq_data *wrqu, char *extra) 350 { 351 struct iw_param *retry = &wrqu->retry; 352 struct wireless_dev *wdev = dev->ieee80211_ptr; 353 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 354 u32 changed = 0; 355 u8 olong = wdev->wiphy->retry_long; 356 u8 oshort = wdev->wiphy->retry_short; 357 int err; 358 359 if (retry->disabled || retry->value < 1 || retry->value > 255 || 360 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) 361 return -EINVAL; 362 363 wiphy_lock(&rdev->wiphy); 364 if (retry->flags & IW_RETRY_LONG) { 365 wdev->wiphy->retry_long = retry->value; 366 changed |= WIPHY_PARAM_RETRY_LONG; 367 } else if (retry->flags & IW_RETRY_SHORT) { 368 wdev->wiphy->retry_short = retry->value; 369 changed |= WIPHY_PARAM_RETRY_SHORT; 370 } else { 371 wdev->wiphy->retry_short = retry->value; 372 wdev->wiphy->retry_long = retry->value; 373 changed |= WIPHY_PARAM_RETRY_LONG; 374 changed |= WIPHY_PARAM_RETRY_SHORT; 375 } 376 377 err = rdev_set_wiphy_params(rdev, changed); 378 if (err) { 379 wdev->wiphy->retry_short = oshort; 380 wdev->wiphy->retry_long = olong; 381 } 382 wiphy_unlock(&rdev->wiphy); 383 384 return err; 385 } 386 387 int cfg80211_wext_giwretry(struct net_device *dev, 388 struct iw_request_info *info, 389 union iwreq_data *wrqu, char *extra) 390 { 391 struct iw_param *retry = &wrqu->retry; 392 struct wireless_dev *wdev = dev->ieee80211_ptr; 393 394 retry->disabled = 0; 395 396 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 397 /* 398 * First return short value, iwconfig will ask long value 399 * later if needed 400 */ 401 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 402 retry->value = wdev->wiphy->retry_short; 403 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 404 retry->flags |= IW_RETRY_LONG; 405 406 return 0; 407 } 408 409 if (retry->flags & IW_RETRY_LONG) { 410 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 411 retry->value = wdev->wiphy->retry_long; 412 } 413 414 return 0; 415 } 416 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry); 417 418 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 419 struct net_device *dev, bool pairwise, 420 const u8 *addr, bool remove, bool tx_key, 421 int idx, struct key_params *params) 422 { 423 struct wireless_dev *wdev = dev->ieee80211_ptr; 424 int err, i; 425 bool rejoin = false; 426 427 if (wdev->valid_links) 428 return -EINVAL; 429 430 if (pairwise && !addr) 431 return -EINVAL; 432 433 /* 434 * In many cases we won't actually need this, but it's better 435 * to do it first in case the allocation fails. Don't use wext. 436 */ 437 if (!wdev->wext.keys) { 438 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys), 439 GFP_KERNEL); 440 if (!wdev->wext.keys) 441 return -ENOMEM; 442 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) 443 wdev->wext.keys->params[i].key = 444 wdev->wext.keys->data[i]; 445 } 446 447 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 448 wdev->iftype != NL80211_IFTYPE_STATION) 449 return -EOPNOTSUPP; 450 451 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 452 if (!wdev->connected) 453 return -ENOLINK; 454 455 if (!rdev->ops->set_default_mgmt_key) 456 return -EOPNOTSUPP; 457 458 if (idx < 4 || idx > 5) 459 return -EINVAL; 460 } else if (idx < 0 || idx > 3) 461 return -EINVAL; 462 463 if (remove) { 464 err = 0; 465 if (wdev->connected || 466 (wdev->iftype == NL80211_IFTYPE_ADHOC && 467 wdev->u.ibss.current_bss)) { 468 /* 469 * If removing the current TX key, we will need to 470 * join a new IBSS without the privacy bit clear. 471 */ 472 if (idx == wdev->wext.default_key && 473 wdev->iftype == NL80211_IFTYPE_ADHOC) { 474 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 475 rejoin = true; 476 } 477 478 if (!pairwise && addr && 479 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 480 err = -ENOENT; 481 else 482 err = rdev_del_key(rdev, dev, -1, idx, pairwise, 483 addr); 484 } 485 wdev->wext.connect.privacy = false; 486 /* 487 * Applications using wireless extensions expect to be 488 * able to delete keys that don't exist, so allow that. 489 */ 490 if (err == -ENOENT) 491 err = 0; 492 if (!err) { 493 if (!addr && idx < 4) { 494 memset(wdev->wext.keys->data[idx], 0, 495 sizeof(wdev->wext.keys->data[idx])); 496 wdev->wext.keys->params[idx].key_len = 0; 497 wdev->wext.keys->params[idx].cipher = 0; 498 } 499 if (idx == wdev->wext.default_key) 500 wdev->wext.default_key = -1; 501 else if (idx == wdev->wext.default_mgmt_key) 502 wdev->wext.default_mgmt_key = -1; 503 } 504 505 if (!err && rejoin) 506 err = cfg80211_ibss_wext_join(rdev, wdev); 507 508 return err; 509 } 510 511 if (addr) 512 tx_key = false; 513 514 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) 515 return -EINVAL; 516 517 err = 0; 518 if (wdev->connected || 519 (wdev->iftype == NL80211_IFTYPE_ADHOC && 520 wdev->u.ibss.current_bss)) 521 err = rdev_add_key(rdev, dev, -1, idx, pairwise, addr, params); 522 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 523 params->cipher != WLAN_CIPHER_SUITE_WEP104) 524 return -EINVAL; 525 if (err) 526 return err; 527 528 /* 529 * We only need to store WEP keys, since they're the only keys that 530 * can be set before a connection is established and persist after 531 * disconnecting. 532 */ 533 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 534 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 535 wdev->wext.keys->params[idx] = *params; 536 memcpy(wdev->wext.keys->data[idx], 537 params->key, params->key_len); 538 wdev->wext.keys->params[idx].key = 539 wdev->wext.keys->data[idx]; 540 } 541 542 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 543 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 544 (tx_key || (!addr && wdev->wext.default_key == -1))) { 545 if (wdev->connected || 546 (wdev->iftype == NL80211_IFTYPE_ADHOC && 547 wdev->u.ibss.current_bss)) { 548 /* 549 * If we are getting a new TX key from not having 550 * had one before we need to join a new IBSS with 551 * the privacy bit set. 552 */ 553 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 554 wdev->wext.default_key == -1) { 555 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 556 rejoin = true; 557 } 558 err = rdev_set_default_key(rdev, dev, -1, idx, true, 559 true); 560 } 561 if (!err) { 562 wdev->wext.default_key = idx; 563 if (rejoin) 564 err = cfg80211_ibss_wext_join(rdev, wdev); 565 } 566 return err; 567 } 568 569 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 570 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 571 if (wdev->connected || 572 (wdev->iftype == NL80211_IFTYPE_ADHOC && 573 wdev->u.ibss.current_bss)) 574 err = rdev_set_default_mgmt_key(rdev, dev, -1, idx); 575 if (!err) 576 wdev->wext.default_mgmt_key = idx; 577 return err; 578 } 579 580 return 0; 581 } 582 583 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 584 struct net_device *dev, bool pairwise, 585 const u8 *addr, bool remove, bool tx_key, 586 int idx, struct key_params *params) 587 { 588 int err; 589 590 wdev_lock(dev->ieee80211_ptr); 591 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr, 592 remove, tx_key, idx, params); 593 wdev_unlock(dev->ieee80211_ptr); 594 595 return err; 596 } 597 598 static int cfg80211_wext_siwencode(struct net_device *dev, 599 struct iw_request_info *info, 600 union iwreq_data *wrqu, char *keybuf) 601 { 602 struct iw_point *erq = &wrqu->encoding; 603 struct wireless_dev *wdev = dev->ieee80211_ptr; 604 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 605 int idx, err; 606 bool remove = false; 607 struct key_params params; 608 609 if (wdev->iftype != NL80211_IFTYPE_STATION && 610 wdev->iftype != NL80211_IFTYPE_ADHOC) 611 return -EOPNOTSUPP; 612 613 /* no use -- only MFP (set_default_mgmt_key) is optional */ 614 if (!rdev->ops->del_key || 615 !rdev->ops->add_key || 616 !rdev->ops->set_default_key) 617 return -EOPNOTSUPP; 618 619 wiphy_lock(&rdev->wiphy); 620 if (wdev->valid_links) { 621 err = -EOPNOTSUPP; 622 goto out; 623 } 624 625 idx = erq->flags & IW_ENCODE_INDEX; 626 if (idx == 0) { 627 idx = wdev->wext.default_key; 628 if (idx < 0) 629 idx = 0; 630 } else if (idx < 1 || idx > 4) { 631 err = -EINVAL; 632 goto out; 633 } else { 634 idx--; 635 } 636 637 if (erq->flags & IW_ENCODE_DISABLED) 638 remove = true; 639 else if (erq->length == 0) { 640 /* No key data - just set the default TX key index */ 641 err = 0; 642 wdev_lock(wdev); 643 if (wdev->connected || 644 (wdev->iftype == NL80211_IFTYPE_ADHOC && 645 wdev->u.ibss.current_bss)) 646 err = rdev_set_default_key(rdev, dev, -1, idx, true, 647 true); 648 if (!err) 649 wdev->wext.default_key = idx; 650 wdev_unlock(wdev); 651 goto out; 652 } 653 654 memset(¶ms, 0, sizeof(params)); 655 params.key = keybuf; 656 params.key_len = erq->length; 657 if (erq->length == 5) { 658 params.cipher = WLAN_CIPHER_SUITE_WEP40; 659 } else if (erq->length == 13) { 660 params.cipher = WLAN_CIPHER_SUITE_WEP104; 661 } else if (!remove) { 662 err = -EINVAL; 663 goto out; 664 } 665 666 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove, 667 wdev->wext.default_key == -1, 668 idx, ¶ms); 669 out: 670 wiphy_unlock(&rdev->wiphy); 671 672 return err; 673 } 674 675 static int cfg80211_wext_siwencodeext(struct net_device *dev, 676 struct iw_request_info *info, 677 union iwreq_data *wrqu, char *extra) 678 { 679 struct iw_point *erq = &wrqu->encoding; 680 struct wireless_dev *wdev = dev->ieee80211_ptr; 681 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 682 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 683 const u8 *addr; 684 int idx; 685 bool remove = false; 686 struct key_params params; 687 u32 cipher; 688 int ret; 689 690 if (wdev->iftype != NL80211_IFTYPE_STATION && 691 wdev->iftype != NL80211_IFTYPE_ADHOC) 692 return -EOPNOTSUPP; 693 694 /* no use -- only MFP (set_default_mgmt_key) is optional */ 695 if (!rdev->ops->del_key || 696 !rdev->ops->add_key || 697 !rdev->ops->set_default_key) 698 return -EOPNOTSUPP; 699 700 wdev_lock(wdev); 701 if (wdev->valid_links) { 702 wdev_unlock(wdev); 703 return -EOPNOTSUPP; 704 } 705 wdev_unlock(wdev); 706 707 switch (ext->alg) { 708 case IW_ENCODE_ALG_NONE: 709 remove = true; 710 cipher = 0; 711 break; 712 case IW_ENCODE_ALG_WEP: 713 if (ext->key_len == 5) 714 cipher = WLAN_CIPHER_SUITE_WEP40; 715 else if (ext->key_len == 13) 716 cipher = WLAN_CIPHER_SUITE_WEP104; 717 else 718 return -EINVAL; 719 break; 720 case IW_ENCODE_ALG_TKIP: 721 cipher = WLAN_CIPHER_SUITE_TKIP; 722 break; 723 case IW_ENCODE_ALG_CCMP: 724 cipher = WLAN_CIPHER_SUITE_CCMP; 725 break; 726 case IW_ENCODE_ALG_AES_CMAC: 727 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 728 break; 729 default: 730 return -EOPNOTSUPP; 731 } 732 733 if (erq->flags & IW_ENCODE_DISABLED) 734 remove = true; 735 736 idx = erq->flags & IW_ENCODE_INDEX; 737 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 738 if (idx < 4 || idx > 5) { 739 idx = wdev->wext.default_mgmt_key; 740 if (idx < 0) 741 return -EINVAL; 742 } else 743 idx--; 744 } else { 745 if (idx < 1 || idx > 4) { 746 idx = wdev->wext.default_key; 747 if (idx < 0) 748 return -EINVAL; 749 } else 750 idx--; 751 } 752 753 addr = ext->addr.sa_data; 754 if (is_broadcast_ether_addr(addr)) 755 addr = NULL; 756 757 memset(¶ms, 0, sizeof(params)); 758 params.key = ext->key; 759 params.key_len = ext->key_len; 760 params.cipher = cipher; 761 762 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 763 params.seq = ext->rx_seq; 764 params.seq_len = 6; 765 } 766 767 wiphy_lock(wdev->wiphy); 768 ret = cfg80211_set_encryption( 769 rdev, dev, 770 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 771 addr, remove, 772 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 773 idx, ¶ms); 774 wiphy_unlock(wdev->wiphy); 775 776 return ret; 777 } 778 779 static int cfg80211_wext_giwencode(struct net_device *dev, 780 struct iw_request_info *info, 781 union iwreq_data *wrqu, char *keybuf) 782 { 783 struct iw_point *erq = &wrqu->encoding; 784 struct wireless_dev *wdev = dev->ieee80211_ptr; 785 int idx; 786 787 if (wdev->iftype != NL80211_IFTYPE_STATION && 788 wdev->iftype != NL80211_IFTYPE_ADHOC) 789 return -EOPNOTSUPP; 790 791 idx = erq->flags & IW_ENCODE_INDEX; 792 if (idx == 0) { 793 idx = wdev->wext.default_key; 794 if (idx < 0) 795 idx = 0; 796 } else if (idx < 1 || idx > 4) 797 return -EINVAL; 798 else 799 idx--; 800 801 erq->flags = idx + 1; 802 803 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 804 erq->flags |= IW_ENCODE_DISABLED; 805 erq->length = 0; 806 return 0; 807 } 808 809 erq->length = min_t(size_t, erq->length, 810 wdev->wext.keys->params[idx].key_len); 811 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 812 erq->flags |= IW_ENCODE_ENABLED; 813 814 return 0; 815 } 816 817 static int cfg80211_wext_siwfreq(struct net_device *dev, 818 struct iw_request_info *info, 819 union iwreq_data *wrqu, char *extra) 820 { 821 struct iw_freq *wextfreq = &wrqu->freq; 822 struct wireless_dev *wdev = dev->ieee80211_ptr; 823 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 824 struct cfg80211_chan_def chandef = { 825 .width = NL80211_CHAN_WIDTH_20_NOHT, 826 }; 827 int freq, ret; 828 829 wiphy_lock(&rdev->wiphy); 830 831 switch (wdev->iftype) { 832 case NL80211_IFTYPE_STATION: 833 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 834 break; 835 case NL80211_IFTYPE_ADHOC: 836 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 837 break; 838 case NL80211_IFTYPE_MONITOR: 839 freq = cfg80211_wext_freq(wextfreq); 840 if (freq < 0) { 841 ret = freq; 842 break; 843 } 844 if (freq == 0) { 845 ret = -EINVAL; 846 break; 847 } 848 chandef.center_freq1 = freq; 849 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 850 if (!chandef.chan) { 851 ret = -EINVAL; 852 break; 853 } 854 ret = cfg80211_set_monitor_channel(rdev, &chandef); 855 break; 856 case NL80211_IFTYPE_MESH_POINT: 857 freq = cfg80211_wext_freq(wextfreq); 858 if (freq < 0) { 859 ret = freq; 860 break; 861 } 862 if (freq == 0) { 863 ret = -EINVAL; 864 break; 865 } 866 chandef.center_freq1 = freq; 867 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 868 if (!chandef.chan) { 869 ret = -EINVAL; 870 break; 871 } 872 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 873 break; 874 default: 875 ret = -EOPNOTSUPP; 876 break; 877 } 878 879 wiphy_unlock(&rdev->wiphy); 880 881 return ret; 882 } 883 884 static int cfg80211_wext_giwfreq(struct net_device *dev, 885 struct iw_request_info *info, 886 union iwreq_data *wrqu, char *extra) 887 { 888 struct iw_freq *freq = &wrqu->freq; 889 struct wireless_dev *wdev = dev->ieee80211_ptr; 890 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 891 struct cfg80211_chan_def chandef = {}; 892 int ret; 893 894 wiphy_lock(&rdev->wiphy); 895 switch (wdev->iftype) { 896 case NL80211_IFTYPE_STATION: 897 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 898 break; 899 case NL80211_IFTYPE_ADHOC: 900 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 901 break; 902 case NL80211_IFTYPE_MONITOR: 903 if (!rdev->ops->get_channel) { 904 ret = -EINVAL; 905 break; 906 } 907 908 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 909 if (ret) 910 break; 911 freq->m = chandef.chan->center_freq; 912 freq->e = 6; 913 ret = 0; 914 break; 915 default: 916 ret = -EINVAL; 917 break; 918 } 919 920 wiphy_unlock(&rdev->wiphy); 921 922 return ret; 923 } 924 925 static int cfg80211_wext_siwtxpower(struct net_device *dev, 926 struct iw_request_info *info, 927 union iwreq_data *data, char *extra) 928 { 929 struct wireless_dev *wdev = dev->ieee80211_ptr; 930 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 931 enum nl80211_tx_power_setting type; 932 int dbm = 0; 933 int ret; 934 935 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 936 return -EINVAL; 937 if (data->txpower.flags & IW_TXPOW_RANGE) 938 return -EINVAL; 939 940 if (!rdev->ops->set_tx_power) 941 return -EOPNOTSUPP; 942 943 /* only change when not disabling */ 944 if (!data->txpower.disabled) { 945 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 946 947 if (data->txpower.fixed) { 948 /* 949 * wext doesn't support negative values, see 950 * below where it's for automatic 951 */ 952 if (data->txpower.value < 0) 953 return -EINVAL; 954 dbm = data->txpower.value; 955 type = NL80211_TX_POWER_FIXED; 956 /* TODO: do regulatory check! */ 957 } else { 958 /* 959 * Automatic power level setting, max being the value 960 * passed in from userland. 961 */ 962 if (data->txpower.value < 0) { 963 type = NL80211_TX_POWER_AUTOMATIC; 964 } else { 965 dbm = data->txpower.value; 966 type = NL80211_TX_POWER_LIMITED; 967 } 968 } 969 } else { 970 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 971 schedule_work(&rdev->rfkill_block); 972 return 0; 973 } 974 975 wiphy_lock(&rdev->wiphy); 976 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 977 wiphy_unlock(&rdev->wiphy); 978 979 return ret; 980 } 981 982 static int cfg80211_wext_giwtxpower(struct net_device *dev, 983 struct iw_request_info *info, 984 union iwreq_data *data, char *extra) 985 { 986 struct wireless_dev *wdev = dev->ieee80211_ptr; 987 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 988 int err, val; 989 990 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 991 return -EINVAL; 992 if (data->txpower.flags & IW_TXPOW_RANGE) 993 return -EINVAL; 994 995 if (!rdev->ops->get_tx_power) 996 return -EOPNOTSUPP; 997 998 wiphy_lock(&rdev->wiphy); 999 err = rdev_get_tx_power(rdev, wdev, &val); 1000 wiphy_unlock(&rdev->wiphy); 1001 if (err) 1002 return err; 1003 1004 /* well... oh well */ 1005 data->txpower.fixed = 1; 1006 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 1007 data->txpower.value = val; 1008 data->txpower.flags = IW_TXPOW_DBM; 1009 1010 return 0; 1011 } 1012 1013 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 1014 s32 auth_alg) 1015 { 1016 int nr_alg = 0; 1017 1018 if (!auth_alg) 1019 return -EINVAL; 1020 1021 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 1022 IW_AUTH_ALG_SHARED_KEY | 1023 IW_AUTH_ALG_LEAP)) 1024 return -EINVAL; 1025 1026 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 1027 nr_alg++; 1028 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 1029 } 1030 1031 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 1032 nr_alg++; 1033 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 1034 } 1035 1036 if (auth_alg & IW_AUTH_ALG_LEAP) { 1037 nr_alg++; 1038 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 1039 } 1040 1041 if (nr_alg > 1) 1042 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 1043 1044 return 0; 1045 } 1046 1047 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 1048 { 1049 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 1050 IW_AUTH_WPA_VERSION_WPA2| 1051 IW_AUTH_WPA_VERSION_DISABLED)) 1052 return -EINVAL; 1053 1054 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 1055 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 1056 IW_AUTH_WPA_VERSION_WPA2))) 1057 return -EINVAL; 1058 1059 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 1060 wdev->wext.connect.crypto.wpa_versions &= 1061 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 1062 1063 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 1064 wdev->wext.connect.crypto.wpa_versions |= 1065 NL80211_WPA_VERSION_1; 1066 1067 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 1068 wdev->wext.connect.crypto.wpa_versions |= 1069 NL80211_WPA_VERSION_2; 1070 1071 return 0; 1072 } 1073 1074 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 1075 { 1076 if (cipher & IW_AUTH_CIPHER_WEP40) 1077 wdev->wext.connect.crypto.cipher_group = 1078 WLAN_CIPHER_SUITE_WEP40; 1079 else if (cipher & IW_AUTH_CIPHER_WEP104) 1080 wdev->wext.connect.crypto.cipher_group = 1081 WLAN_CIPHER_SUITE_WEP104; 1082 else if (cipher & IW_AUTH_CIPHER_TKIP) 1083 wdev->wext.connect.crypto.cipher_group = 1084 WLAN_CIPHER_SUITE_TKIP; 1085 else if (cipher & IW_AUTH_CIPHER_CCMP) 1086 wdev->wext.connect.crypto.cipher_group = 1087 WLAN_CIPHER_SUITE_CCMP; 1088 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1089 wdev->wext.connect.crypto.cipher_group = 1090 WLAN_CIPHER_SUITE_AES_CMAC; 1091 else if (cipher & IW_AUTH_CIPHER_NONE) 1092 wdev->wext.connect.crypto.cipher_group = 0; 1093 else 1094 return -EINVAL; 1095 1096 return 0; 1097 } 1098 1099 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1100 { 1101 int nr_ciphers = 0; 1102 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1103 1104 if (cipher & IW_AUTH_CIPHER_WEP40) { 1105 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1106 nr_ciphers++; 1107 } 1108 1109 if (cipher & IW_AUTH_CIPHER_WEP104) { 1110 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1111 nr_ciphers++; 1112 } 1113 1114 if (cipher & IW_AUTH_CIPHER_TKIP) { 1115 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1116 nr_ciphers++; 1117 } 1118 1119 if (cipher & IW_AUTH_CIPHER_CCMP) { 1120 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1121 nr_ciphers++; 1122 } 1123 1124 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1125 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1126 nr_ciphers++; 1127 } 1128 1129 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1130 1131 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1132 1133 return 0; 1134 } 1135 1136 1137 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1138 { 1139 int nr_akm_suites = 0; 1140 1141 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1142 IW_AUTH_KEY_MGMT_PSK)) 1143 return -EINVAL; 1144 1145 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1146 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1147 WLAN_AKM_SUITE_8021X; 1148 nr_akm_suites++; 1149 } 1150 1151 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1152 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1153 WLAN_AKM_SUITE_PSK; 1154 nr_akm_suites++; 1155 } 1156 1157 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1158 1159 return 0; 1160 } 1161 1162 static int cfg80211_wext_siwauth(struct net_device *dev, 1163 struct iw_request_info *info, 1164 union iwreq_data *wrqu, char *extra) 1165 { 1166 struct iw_param *data = &wrqu->param; 1167 struct wireless_dev *wdev = dev->ieee80211_ptr; 1168 1169 if (wdev->iftype != NL80211_IFTYPE_STATION) 1170 return -EOPNOTSUPP; 1171 1172 switch (data->flags & IW_AUTH_INDEX) { 1173 case IW_AUTH_PRIVACY_INVOKED: 1174 wdev->wext.connect.privacy = data->value; 1175 return 0; 1176 case IW_AUTH_WPA_VERSION: 1177 return cfg80211_set_wpa_version(wdev, data->value); 1178 case IW_AUTH_CIPHER_GROUP: 1179 return cfg80211_set_cipher_group(wdev, data->value); 1180 case IW_AUTH_KEY_MGMT: 1181 return cfg80211_set_key_mgt(wdev, data->value); 1182 case IW_AUTH_CIPHER_PAIRWISE: 1183 return cfg80211_set_cipher_pairwise(wdev, data->value); 1184 case IW_AUTH_80211_AUTH_ALG: 1185 return cfg80211_set_auth_alg(wdev, data->value); 1186 case IW_AUTH_WPA_ENABLED: 1187 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1188 case IW_AUTH_DROP_UNENCRYPTED: 1189 case IW_AUTH_MFP: 1190 return 0; 1191 default: 1192 return -EOPNOTSUPP; 1193 } 1194 } 1195 1196 static int cfg80211_wext_giwauth(struct net_device *dev, 1197 struct iw_request_info *info, 1198 union iwreq_data *wrqu, char *extra) 1199 { 1200 /* XXX: what do we need? */ 1201 1202 return -EOPNOTSUPP; 1203 } 1204 1205 static int cfg80211_wext_siwpower(struct net_device *dev, 1206 struct iw_request_info *info, 1207 union iwreq_data *wrqu, char *extra) 1208 { 1209 struct iw_param *wrq = &wrqu->power; 1210 struct wireless_dev *wdev = dev->ieee80211_ptr; 1211 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1212 bool ps; 1213 int timeout = wdev->ps_timeout; 1214 int err; 1215 1216 if (wdev->iftype != NL80211_IFTYPE_STATION) 1217 return -EINVAL; 1218 1219 if (!rdev->ops->set_power_mgmt) 1220 return -EOPNOTSUPP; 1221 1222 if (wrq->disabled) { 1223 ps = false; 1224 } else { 1225 switch (wrq->flags & IW_POWER_MODE) { 1226 case IW_POWER_ON: /* If not specified */ 1227 case IW_POWER_MODE: /* If set all mask */ 1228 case IW_POWER_ALL_R: /* If explicitely state all */ 1229 ps = true; 1230 break; 1231 default: /* Otherwise we ignore */ 1232 return -EINVAL; 1233 } 1234 1235 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1236 return -EINVAL; 1237 1238 if (wrq->flags & IW_POWER_TIMEOUT) 1239 timeout = wrq->value / 1000; 1240 } 1241 1242 wiphy_lock(&rdev->wiphy); 1243 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1244 wiphy_unlock(&rdev->wiphy); 1245 if (err) 1246 return err; 1247 1248 wdev->ps = ps; 1249 wdev->ps_timeout = timeout; 1250 1251 return 0; 1252 1253 } 1254 1255 static int cfg80211_wext_giwpower(struct net_device *dev, 1256 struct iw_request_info *info, 1257 union iwreq_data *wrqu, char *extra) 1258 { 1259 struct iw_param *wrq = &wrqu->power; 1260 struct wireless_dev *wdev = dev->ieee80211_ptr; 1261 1262 wrq->disabled = !wdev->ps; 1263 1264 return 0; 1265 } 1266 1267 static int cfg80211_wext_siwrate(struct net_device *dev, 1268 struct iw_request_info *info, 1269 union iwreq_data *wrqu, char *extra) 1270 { 1271 struct iw_param *rate = &wrqu->bitrate; 1272 struct wireless_dev *wdev = dev->ieee80211_ptr; 1273 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1274 struct cfg80211_bitrate_mask mask; 1275 u32 fixed, maxrate; 1276 struct ieee80211_supported_band *sband; 1277 int band, ridx, ret; 1278 bool match = false; 1279 1280 if (!rdev->ops->set_bitrate_mask) 1281 return -EOPNOTSUPP; 1282 1283 memset(&mask, 0, sizeof(mask)); 1284 fixed = 0; 1285 maxrate = (u32)-1; 1286 1287 if (rate->value < 0) { 1288 /* nothing */ 1289 } else if (rate->fixed) { 1290 fixed = rate->value / 100000; 1291 } else { 1292 maxrate = rate->value / 100000; 1293 } 1294 1295 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1296 sband = wdev->wiphy->bands[band]; 1297 if (sband == NULL) 1298 continue; 1299 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1300 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1301 if (fixed == srate->bitrate) { 1302 mask.control[band].legacy = 1 << ridx; 1303 match = true; 1304 break; 1305 } 1306 if (srate->bitrate <= maxrate) { 1307 mask.control[band].legacy |= 1 << ridx; 1308 match = true; 1309 } 1310 } 1311 } 1312 1313 if (!match) 1314 return -EINVAL; 1315 1316 wiphy_lock(&rdev->wiphy); 1317 if (dev->ieee80211_ptr->valid_links) 1318 ret = -EOPNOTSUPP; 1319 else 1320 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1321 wiphy_unlock(&rdev->wiphy); 1322 1323 return ret; 1324 } 1325 1326 static int cfg80211_wext_giwrate(struct net_device *dev, 1327 struct iw_request_info *info, 1328 union iwreq_data *wrqu, char *extra) 1329 { 1330 struct iw_param *rate = &wrqu->bitrate; 1331 struct wireless_dev *wdev = dev->ieee80211_ptr; 1332 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1333 struct station_info sinfo = {}; 1334 u8 addr[ETH_ALEN]; 1335 int err; 1336 1337 if (wdev->iftype != NL80211_IFTYPE_STATION) 1338 return -EOPNOTSUPP; 1339 1340 if (!rdev->ops->get_station) 1341 return -EOPNOTSUPP; 1342 1343 err = 0; 1344 wdev_lock(wdev); 1345 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1346 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1347 ETH_ALEN); 1348 else 1349 err = -EOPNOTSUPP; 1350 wdev_unlock(wdev); 1351 if (err) 1352 return err; 1353 1354 wiphy_lock(&rdev->wiphy); 1355 err = rdev_get_station(rdev, dev, addr, &sinfo); 1356 wiphy_unlock(&rdev->wiphy); 1357 if (err) 1358 return err; 1359 1360 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1361 err = -EOPNOTSUPP; 1362 goto free; 1363 } 1364 1365 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1366 1367 free: 1368 cfg80211_sinfo_release_content(&sinfo); 1369 return err; 1370 } 1371 1372 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1373 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1374 { 1375 struct wireless_dev *wdev = dev->ieee80211_ptr; 1376 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1377 /* we are under RTNL - globally locked - so can use static structs */ 1378 static struct iw_statistics wstats; 1379 static struct station_info sinfo = {}; 1380 u8 bssid[ETH_ALEN]; 1381 int ret; 1382 1383 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1384 return NULL; 1385 1386 if (!rdev->ops->get_station) 1387 return NULL; 1388 1389 /* Grab BSSID of current BSS, if any */ 1390 wdev_lock(wdev); 1391 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1392 wdev_unlock(wdev); 1393 return NULL; 1394 } 1395 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1396 wdev_unlock(wdev); 1397 1398 memset(&sinfo, 0, sizeof(sinfo)); 1399 1400 wiphy_lock(&rdev->wiphy); 1401 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1402 wiphy_unlock(&rdev->wiphy); 1403 1404 if (ret) 1405 return NULL; 1406 1407 memset(&wstats, 0, sizeof(wstats)); 1408 1409 switch (rdev->wiphy.signal_type) { 1410 case CFG80211_SIGNAL_TYPE_MBM: 1411 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1412 int sig = sinfo.signal; 1413 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1414 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1415 wstats.qual.updated |= IW_QUAL_DBM; 1416 wstats.qual.level = sig; 1417 if (sig < -110) 1418 sig = -110; 1419 else if (sig > -40) 1420 sig = -40; 1421 wstats.qual.qual = sig + 110; 1422 break; 1423 } 1424 fallthrough; 1425 case CFG80211_SIGNAL_TYPE_UNSPEC: 1426 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1427 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1428 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1429 wstats.qual.level = sinfo.signal; 1430 wstats.qual.qual = sinfo.signal; 1431 break; 1432 } 1433 fallthrough; 1434 default: 1435 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1436 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1437 } 1438 1439 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1440 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1441 wstats.discard.misc = sinfo.rx_dropped_misc; 1442 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1443 wstats.discard.retries = sinfo.tx_failed; 1444 1445 cfg80211_sinfo_release_content(&sinfo); 1446 1447 return &wstats; 1448 } 1449 1450 static int cfg80211_wext_siwap(struct net_device *dev, 1451 struct iw_request_info *info, 1452 union iwreq_data *wrqu, char *extra) 1453 { 1454 struct sockaddr *ap_addr = &wrqu->ap_addr; 1455 struct wireless_dev *wdev = dev->ieee80211_ptr; 1456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1457 int ret; 1458 1459 wiphy_lock(&rdev->wiphy); 1460 switch (wdev->iftype) { 1461 case NL80211_IFTYPE_ADHOC: 1462 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1463 break; 1464 case NL80211_IFTYPE_STATION: 1465 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1466 break; 1467 default: 1468 ret = -EOPNOTSUPP; 1469 break; 1470 } 1471 wiphy_unlock(&rdev->wiphy); 1472 1473 return ret; 1474 } 1475 1476 static int cfg80211_wext_giwap(struct net_device *dev, 1477 struct iw_request_info *info, 1478 union iwreq_data *wrqu, char *extra) 1479 { 1480 struct sockaddr *ap_addr = &wrqu->ap_addr; 1481 struct wireless_dev *wdev = dev->ieee80211_ptr; 1482 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1483 int ret; 1484 1485 wiphy_lock(&rdev->wiphy); 1486 switch (wdev->iftype) { 1487 case NL80211_IFTYPE_ADHOC: 1488 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1489 break; 1490 case NL80211_IFTYPE_STATION: 1491 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1492 break; 1493 default: 1494 ret = -EOPNOTSUPP; 1495 break; 1496 } 1497 wiphy_unlock(&rdev->wiphy); 1498 1499 return ret; 1500 } 1501 1502 static int cfg80211_wext_siwessid(struct net_device *dev, 1503 struct iw_request_info *info, 1504 union iwreq_data *wrqu, char *ssid) 1505 { 1506 struct iw_point *data = &wrqu->data; 1507 struct wireless_dev *wdev = dev->ieee80211_ptr; 1508 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1509 int ret; 1510 1511 wiphy_lock(&rdev->wiphy); 1512 switch (wdev->iftype) { 1513 case NL80211_IFTYPE_ADHOC: 1514 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1515 break; 1516 case NL80211_IFTYPE_STATION: 1517 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1518 break; 1519 default: 1520 ret = -EOPNOTSUPP; 1521 break; 1522 } 1523 wiphy_unlock(&rdev->wiphy); 1524 1525 return ret; 1526 } 1527 1528 static int cfg80211_wext_giwessid(struct net_device *dev, 1529 struct iw_request_info *info, 1530 union iwreq_data *wrqu, char *ssid) 1531 { 1532 struct iw_point *data = &wrqu->data; 1533 struct wireless_dev *wdev = dev->ieee80211_ptr; 1534 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1535 int ret; 1536 1537 data->flags = 0; 1538 data->length = 0; 1539 1540 wiphy_lock(&rdev->wiphy); 1541 switch (wdev->iftype) { 1542 case NL80211_IFTYPE_ADHOC: 1543 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1544 break; 1545 case NL80211_IFTYPE_STATION: 1546 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1547 break; 1548 default: 1549 ret = -EOPNOTSUPP; 1550 break; 1551 } 1552 wiphy_unlock(&rdev->wiphy); 1553 1554 return ret; 1555 } 1556 1557 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1558 struct iw_request_info *info, 1559 union iwreq_data *wrqu, char *extra) 1560 { 1561 struct wireless_dev *wdev = dev->ieee80211_ptr; 1562 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1563 struct cfg80211_pmksa cfg_pmksa; 1564 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1565 int ret; 1566 1567 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1568 1569 if (wdev->iftype != NL80211_IFTYPE_STATION) 1570 return -EINVAL; 1571 1572 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1573 cfg_pmksa.pmkid = pmksa->pmkid; 1574 1575 wiphy_lock(&rdev->wiphy); 1576 switch (pmksa->cmd) { 1577 case IW_PMKSA_ADD: 1578 if (!rdev->ops->set_pmksa) { 1579 ret = -EOPNOTSUPP; 1580 break; 1581 } 1582 1583 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1584 break; 1585 case IW_PMKSA_REMOVE: 1586 if (!rdev->ops->del_pmksa) { 1587 ret = -EOPNOTSUPP; 1588 break; 1589 } 1590 1591 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1592 break; 1593 case IW_PMKSA_FLUSH: 1594 if (!rdev->ops->flush_pmksa) { 1595 ret = -EOPNOTSUPP; 1596 break; 1597 } 1598 1599 ret = rdev_flush_pmksa(rdev, dev); 1600 break; 1601 default: 1602 ret = -EOPNOTSUPP; 1603 break; 1604 } 1605 wiphy_unlock(&rdev->wiphy); 1606 1607 return ret; 1608 } 1609 1610 static const iw_handler cfg80211_handlers[] = { 1611 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), 1612 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq), 1613 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq), 1614 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), 1615 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), 1616 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), 1617 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap), 1618 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap), 1619 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme), 1620 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), 1621 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), 1622 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid), 1623 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid), 1624 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate), 1625 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate), 1626 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), 1627 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), 1628 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), 1629 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), 1630 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower), 1631 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower), 1632 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry), 1633 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), 1634 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode), 1635 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode), 1636 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower), 1637 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower), 1638 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie), 1639 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth), 1640 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth), 1641 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext), 1642 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa), 1643 }; 1644 1645 const struct iw_handler_def cfg80211_wext_handler = { 1646 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1647 .standard = cfg80211_handlers, 1648 .get_wireless_stats = cfg80211_wireless_stats, 1649 }; 1650