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) 2019-2021 Intel Corporation 11 */ 12 13 #include <linux/export.h> 14 #include <linux/wireless.h> 15 #include <linux/nl80211.h> 16 #include <linux/if_arp.h> 17 #include <linux/etherdevice.h> 18 #include <linux/slab.h> 19 #include <net/iw_handler.h> 20 #include <net/cfg80211.h> 21 #include <net/cfg80211-wext.h> 22 #include "wext-compat.h" 23 #include "core.h" 24 #include "rdev-ops.h" 25 26 int cfg80211_wext_giwname(struct net_device *dev, 27 struct iw_request_info *info, 28 char *name, char *extra) 29 { 30 strcpy(name, "IEEE 802.11"); 31 return 0; 32 } 33 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname); 34 35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 36 u32 *mode, char *extra) 37 { 38 struct wireless_dev *wdev = dev->ieee80211_ptr; 39 struct cfg80211_registered_device *rdev; 40 struct vif_params vifparams; 41 enum nl80211_iftype type; 42 int ret; 43 44 rdev = wiphy_to_rdev(wdev->wiphy); 45 46 switch (*mode) { 47 case IW_MODE_INFRA: 48 type = NL80211_IFTYPE_STATION; 49 break; 50 case IW_MODE_ADHOC: 51 type = NL80211_IFTYPE_ADHOC; 52 break; 53 case IW_MODE_MONITOR: 54 type = NL80211_IFTYPE_MONITOR; 55 break; 56 default: 57 return -EINVAL; 58 } 59 60 if (type == wdev->iftype) 61 return 0; 62 63 memset(&vifparams, 0, sizeof(vifparams)); 64 65 wiphy_lock(wdev->wiphy); 66 ret = cfg80211_change_iface(rdev, dev, type, &vifparams); 67 wiphy_unlock(wdev->wiphy); 68 69 return ret; 70 } 71 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode); 72 73 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 74 u32 *mode, char *extra) 75 { 76 struct wireless_dev *wdev = dev->ieee80211_ptr; 77 78 if (!wdev) 79 return -EOPNOTSUPP; 80 81 switch (wdev->iftype) { 82 case NL80211_IFTYPE_AP: 83 *mode = IW_MODE_MASTER; 84 break; 85 case NL80211_IFTYPE_STATION: 86 *mode = IW_MODE_INFRA; 87 break; 88 case NL80211_IFTYPE_ADHOC: 89 *mode = IW_MODE_ADHOC; 90 break; 91 case NL80211_IFTYPE_MONITOR: 92 *mode = IW_MODE_MONITOR; 93 break; 94 case NL80211_IFTYPE_WDS: 95 *mode = IW_MODE_REPEAT; 96 break; 97 case NL80211_IFTYPE_AP_VLAN: 98 *mode = IW_MODE_SECOND; /* FIXME */ 99 break; 100 default: 101 *mode = IW_MODE_AUTO; 102 break; 103 } 104 return 0; 105 } 106 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode); 107 108 109 int cfg80211_wext_giwrange(struct net_device *dev, 110 struct iw_request_info *info, 111 struct iw_point *data, char *extra) 112 { 113 struct wireless_dev *wdev = dev->ieee80211_ptr; 114 struct iw_range *range = (struct iw_range *) extra; 115 enum nl80211_band band; 116 int i, c = 0; 117 118 if (!wdev) 119 return -EOPNOTSUPP; 120 121 data->length = sizeof(struct iw_range); 122 memset(range, 0, sizeof(struct iw_range)); 123 124 range->we_version_compiled = WIRELESS_EXT; 125 range->we_version_source = 21; 126 range->retry_capa = IW_RETRY_LIMIT; 127 range->retry_flags = IW_RETRY_LIMIT; 128 range->min_retry = 0; 129 range->max_retry = 255; 130 range->min_rts = 0; 131 range->max_rts = 2347; 132 range->min_frag = 256; 133 range->max_frag = 2346; 134 135 range->max_encoding_tokens = 4; 136 137 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 138 139 switch (wdev->wiphy->signal_type) { 140 case CFG80211_SIGNAL_TYPE_NONE: 141 break; 142 case CFG80211_SIGNAL_TYPE_MBM: 143 range->max_qual.level = (u8)-110; 144 range->max_qual.qual = 70; 145 range->avg_qual.qual = 35; 146 range->max_qual.updated |= IW_QUAL_DBM; 147 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 148 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 149 break; 150 case CFG80211_SIGNAL_TYPE_UNSPEC: 151 range->max_qual.level = 100; 152 range->max_qual.qual = 100; 153 range->avg_qual.qual = 50; 154 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 155 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 156 break; 157 } 158 159 range->avg_qual.level = range->max_qual.level / 2; 160 range->avg_qual.noise = range->max_qual.noise / 2; 161 range->avg_qual.updated = range->max_qual.updated; 162 163 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) { 164 switch (wdev->wiphy->cipher_suites[i]) { 165 case WLAN_CIPHER_SUITE_TKIP: 166 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP | 167 IW_ENC_CAPA_WPA); 168 break; 169 170 case WLAN_CIPHER_SUITE_CCMP: 171 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP | 172 IW_ENC_CAPA_WPA2); 173 break; 174 175 case WLAN_CIPHER_SUITE_WEP40: 176 range->encoding_size[range->num_encoding_sizes++] = 177 WLAN_KEY_LEN_WEP40; 178 break; 179 180 case WLAN_CIPHER_SUITE_WEP104: 181 range->encoding_size[range->num_encoding_sizes++] = 182 WLAN_KEY_LEN_WEP104; 183 break; 184 } 185 } 186 187 for (band = 0; band < NUM_NL80211_BANDS; band ++) { 188 struct ieee80211_supported_band *sband; 189 190 sband = wdev->wiphy->bands[band]; 191 192 if (!sband) 193 continue; 194 195 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { 196 struct ieee80211_channel *chan = &sband->channels[i]; 197 198 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { 199 range->freq[c].i = 200 ieee80211_frequency_to_channel( 201 chan->center_freq); 202 range->freq[c].m = chan->center_freq; 203 range->freq[c].e = 6; 204 c++; 205 } 206 } 207 } 208 range->num_channels = c; 209 range->num_frequency = c; 210 211 IW_EVENT_CAPA_SET_KERNEL(range->event_capa); 212 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); 213 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); 214 215 if (wdev->wiphy->max_scan_ssids > 0) 216 range->scan_capa |= IW_SCAN_CAPA_ESSID; 217 218 return 0; 219 } 220 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange); 221 222 223 /** 224 * cfg80211_wext_freq - get wext frequency for non-"auto" 225 * @freq: the wext freq encoding 226 * 227 * Returns a frequency, or a negative error code, or 0 for auto. 228 */ 229 int cfg80211_wext_freq(struct iw_freq *freq) 230 { 231 /* 232 * Parse frequency - return 0 for auto and 233 * -EINVAL for impossible things. 234 */ 235 if (freq->e == 0) { 236 enum nl80211_band band = NL80211_BAND_2GHZ; 237 if (freq->m < 0) 238 return 0; 239 if (freq->m > 14) 240 band = NL80211_BAND_5GHZ; 241 return ieee80211_channel_to_frequency(freq->m, band); 242 } else { 243 int i, div = 1000000; 244 for (i = 0; i < freq->e; i++) 245 div /= 10; 246 if (div <= 0) 247 return -EINVAL; 248 return freq->m / div; 249 } 250 } 251 252 int cfg80211_wext_siwrts(struct net_device *dev, 253 struct iw_request_info *info, 254 struct iw_param *rts, char *extra) 255 { 256 struct wireless_dev *wdev = dev->ieee80211_ptr; 257 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 258 u32 orts = wdev->wiphy->rts_threshold; 259 int err; 260 261 wiphy_lock(&rdev->wiphy); 262 if (rts->disabled || !rts->fixed) { 263 wdev->wiphy->rts_threshold = (u32) -1; 264 } else if (rts->value < 0) { 265 err = -EINVAL; 266 goto out; 267 } else { 268 wdev->wiphy->rts_threshold = rts->value; 269 } 270 271 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD); 272 273 if (err) 274 wdev->wiphy->rts_threshold = orts; 275 276 out: 277 wiphy_unlock(&rdev->wiphy); 278 return err; 279 } 280 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts); 281 282 int cfg80211_wext_giwrts(struct net_device *dev, 283 struct iw_request_info *info, 284 struct iw_param *rts, char *extra) 285 { 286 struct wireless_dev *wdev = dev->ieee80211_ptr; 287 288 rts->value = wdev->wiphy->rts_threshold; 289 rts->disabled = rts->value == (u32) -1; 290 rts->fixed = 1; 291 292 return 0; 293 } 294 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts); 295 296 int cfg80211_wext_siwfrag(struct net_device *dev, 297 struct iw_request_info *info, 298 struct iw_param *frag, char *extra) 299 { 300 struct wireless_dev *wdev = dev->ieee80211_ptr; 301 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 302 u32 ofrag = wdev->wiphy->frag_threshold; 303 int err; 304 305 wiphy_lock(&rdev->wiphy); 306 if (frag->disabled || !frag->fixed) { 307 wdev->wiphy->frag_threshold = (u32) -1; 308 } else if (frag->value < 256) { 309 err = -EINVAL; 310 goto out; 311 } else { 312 /* Fragment length must be even, so strip LSB. */ 313 wdev->wiphy->frag_threshold = frag->value & ~0x1; 314 } 315 316 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD); 317 if (err) 318 wdev->wiphy->frag_threshold = ofrag; 319 out: 320 wiphy_unlock(&rdev->wiphy); 321 322 return err; 323 } 324 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag); 325 326 int cfg80211_wext_giwfrag(struct net_device *dev, 327 struct iw_request_info *info, 328 struct iw_param *frag, char *extra) 329 { 330 struct wireless_dev *wdev = dev->ieee80211_ptr; 331 332 frag->value = wdev->wiphy->frag_threshold; 333 frag->disabled = frag->value == (u32) -1; 334 frag->fixed = 1; 335 336 return 0; 337 } 338 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag); 339 340 static int cfg80211_wext_siwretry(struct net_device *dev, 341 struct iw_request_info *info, 342 struct iw_param *retry, char *extra) 343 { 344 struct wireless_dev *wdev = dev->ieee80211_ptr; 345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 346 u32 changed = 0; 347 u8 olong = wdev->wiphy->retry_long; 348 u8 oshort = wdev->wiphy->retry_short; 349 int err; 350 351 if (retry->disabled || retry->value < 1 || retry->value > 255 || 352 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) 353 return -EINVAL; 354 355 wiphy_lock(&rdev->wiphy); 356 if (retry->flags & IW_RETRY_LONG) { 357 wdev->wiphy->retry_long = retry->value; 358 changed |= WIPHY_PARAM_RETRY_LONG; 359 } else if (retry->flags & IW_RETRY_SHORT) { 360 wdev->wiphy->retry_short = retry->value; 361 changed |= WIPHY_PARAM_RETRY_SHORT; 362 } else { 363 wdev->wiphy->retry_short = retry->value; 364 wdev->wiphy->retry_long = retry->value; 365 changed |= WIPHY_PARAM_RETRY_LONG; 366 changed |= WIPHY_PARAM_RETRY_SHORT; 367 } 368 369 err = rdev_set_wiphy_params(rdev, changed); 370 if (err) { 371 wdev->wiphy->retry_short = oshort; 372 wdev->wiphy->retry_long = olong; 373 } 374 wiphy_unlock(&rdev->wiphy); 375 376 return err; 377 } 378 379 int cfg80211_wext_giwretry(struct net_device *dev, 380 struct iw_request_info *info, 381 struct iw_param *retry, char *extra) 382 { 383 struct wireless_dev *wdev = dev->ieee80211_ptr; 384 385 retry->disabled = 0; 386 387 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 388 /* 389 * First return short value, iwconfig will ask long value 390 * later if needed 391 */ 392 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 393 retry->value = wdev->wiphy->retry_short; 394 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 395 retry->flags |= IW_RETRY_LONG; 396 397 return 0; 398 } 399 400 if (retry->flags & IW_RETRY_LONG) { 401 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 402 retry->value = wdev->wiphy->retry_long; 403 } 404 405 return 0; 406 } 407 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry); 408 409 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 410 struct net_device *dev, bool pairwise, 411 const u8 *addr, bool remove, bool tx_key, 412 int idx, struct key_params *params) 413 { 414 struct wireless_dev *wdev = dev->ieee80211_ptr; 415 int err, i; 416 bool rejoin = false; 417 418 if (pairwise && !addr) 419 return -EINVAL; 420 421 /* 422 * In many cases we won't actually need this, but it's better 423 * to do it first in case the allocation fails. Don't use wext. 424 */ 425 if (!wdev->wext.keys) { 426 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys), 427 GFP_KERNEL); 428 if (!wdev->wext.keys) 429 return -ENOMEM; 430 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) 431 wdev->wext.keys->params[i].key = 432 wdev->wext.keys->data[i]; 433 } 434 435 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 436 wdev->iftype != NL80211_IFTYPE_STATION) 437 return -EOPNOTSUPP; 438 439 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 440 if (!wdev->current_bss) 441 return -ENOLINK; 442 443 if (!rdev->ops->set_default_mgmt_key) 444 return -EOPNOTSUPP; 445 446 if (idx < 4 || idx > 5) 447 return -EINVAL; 448 } else if (idx < 0 || idx > 3) 449 return -EINVAL; 450 451 if (remove) { 452 err = 0; 453 if (wdev->current_bss) { 454 /* 455 * If removing the current TX key, we will need to 456 * join a new IBSS without the privacy bit clear. 457 */ 458 if (idx == wdev->wext.default_key && 459 wdev->iftype == NL80211_IFTYPE_ADHOC) { 460 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 461 rejoin = true; 462 } 463 464 if (!pairwise && addr && 465 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 466 err = -ENOENT; 467 else 468 err = rdev_del_key(rdev, dev, idx, pairwise, 469 addr); 470 } 471 wdev->wext.connect.privacy = false; 472 /* 473 * Applications using wireless extensions expect to be 474 * able to delete keys that don't exist, so allow that. 475 */ 476 if (err == -ENOENT) 477 err = 0; 478 if (!err) { 479 if (!addr && idx < 4) { 480 memset(wdev->wext.keys->data[idx], 0, 481 sizeof(wdev->wext.keys->data[idx])); 482 wdev->wext.keys->params[idx].key_len = 0; 483 wdev->wext.keys->params[idx].cipher = 0; 484 } 485 if (idx == wdev->wext.default_key) 486 wdev->wext.default_key = -1; 487 else if (idx == wdev->wext.default_mgmt_key) 488 wdev->wext.default_mgmt_key = -1; 489 } 490 491 if (!err && rejoin) 492 err = cfg80211_ibss_wext_join(rdev, wdev); 493 494 return err; 495 } 496 497 if (addr) 498 tx_key = false; 499 500 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) 501 return -EINVAL; 502 503 err = 0; 504 if (wdev->current_bss) 505 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params); 506 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 507 params->cipher != WLAN_CIPHER_SUITE_WEP104) 508 return -EINVAL; 509 if (err) 510 return err; 511 512 /* 513 * We only need to store WEP keys, since they're the only keys that 514 * can be set before a connection is established and persist after 515 * disconnecting. 516 */ 517 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 518 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 519 wdev->wext.keys->params[idx] = *params; 520 memcpy(wdev->wext.keys->data[idx], 521 params->key, params->key_len); 522 wdev->wext.keys->params[idx].key = 523 wdev->wext.keys->data[idx]; 524 } 525 526 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 527 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 528 (tx_key || (!addr && wdev->wext.default_key == -1))) { 529 if (wdev->current_bss) { 530 /* 531 * If we are getting a new TX key from not having 532 * had one before we need to join a new IBSS with 533 * the privacy bit set. 534 */ 535 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 536 wdev->wext.default_key == -1) { 537 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 538 rejoin = true; 539 } 540 err = rdev_set_default_key(rdev, dev, idx, true, true); 541 } 542 if (!err) { 543 wdev->wext.default_key = idx; 544 if (rejoin) 545 err = cfg80211_ibss_wext_join(rdev, wdev); 546 } 547 return err; 548 } 549 550 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 551 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 552 if (wdev->current_bss) 553 err = rdev_set_default_mgmt_key(rdev, dev, idx); 554 if (!err) 555 wdev->wext.default_mgmt_key = idx; 556 return err; 557 } 558 559 return 0; 560 } 561 562 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 563 struct net_device *dev, bool pairwise, 564 const u8 *addr, bool remove, bool tx_key, 565 int idx, struct key_params *params) 566 { 567 int err; 568 569 wdev_lock(dev->ieee80211_ptr); 570 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr, 571 remove, tx_key, idx, params); 572 wdev_unlock(dev->ieee80211_ptr); 573 574 return err; 575 } 576 577 static int cfg80211_wext_siwencode(struct net_device *dev, 578 struct iw_request_info *info, 579 struct iw_point *erq, char *keybuf) 580 { 581 struct wireless_dev *wdev = dev->ieee80211_ptr; 582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 583 int idx, err; 584 bool remove = false; 585 struct key_params params; 586 587 if (wdev->iftype != NL80211_IFTYPE_STATION && 588 wdev->iftype != NL80211_IFTYPE_ADHOC) 589 return -EOPNOTSUPP; 590 591 /* no use -- only MFP (set_default_mgmt_key) is optional */ 592 if (!rdev->ops->del_key || 593 !rdev->ops->add_key || 594 !rdev->ops->set_default_key) 595 return -EOPNOTSUPP; 596 597 wiphy_lock(&rdev->wiphy); 598 idx = erq->flags & IW_ENCODE_INDEX; 599 if (idx == 0) { 600 idx = wdev->wext.default_key; 601 if (idx < 0) 602 idx = 0; 603 } else if (idx < 1 || idx > 4) { 604 err = -EINVAL; 605 goto out; 606 } else { 607 idx--; 608 } 609 610 if (erq->flags & IW_ENCODE_DISABLED) 611 remove = true; 612 else if (erq->length == 0) { 613 /* No key data - just set the default TX key index */ 614 err = 0; 615 wdev_lock(wdev); 616 if (wdev->current_bss) 617 err = rdev_set_default_key(rdev, dev, idx, true, 618 true); 619 if (!err) 620 wdev->wext.default_key = idx; 621 wdev_unlock(wdev); 622 goto out; 623 } 624 625 memset(¶ms, 0, sizeof(params)); 626 params.key = keybuf; 627 params.key_len = erq->length; 628 if (erq->length == 5) { 629 params.cipher = WLAN_CIPHER_SUITE_WEP40; 630 } else if (erq->length == 13) { 631 params.cipher = WLAN_CIPHER_SUITE_WEP104; 632 } else if (!remove) { 633 err = -EINVAL; 634 goto out; 635 } 636 637 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove, 638 wdev->wext.default_key == -1, 639 idx, ¶ms); 640 out: 641 wiphy_unlock(&rdev->wiphy); 642 643 return err; 644 } 645 646 static int cfg80211_wext_siwencodeext(struct net_device *dev, 647 struct iw_request_info *info, 648 struct iw_point *erq, char *extra) 649 { 650 struct wireless_dev *wdev = dev->ieee80211_ptr; 651 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 652 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 653 const u8 *addr; 654 int idx; 655 bool remove = false; 656 struct key_params params; 657 u32 cipher; 658 int ret; 659 660 if (wdev->iftype != NL80211_IFTYPE_STATION && 661 wdev->iftype != NL80211_IFTYPE_ADHOC) 662 return -EOPNOTSUPP; 663 664 /* no use -- only MFP (set_default_mgmt_key) is optional */ 665 if (!rdev->ops->del_key || 666 !rdev->ops->add_key || 667 !rdev->ops->set_default_key) 668 return -EOPNOTSUPP; 669 670 switch (ext->alg) { 671 case IW_ENCODE_ALG_NONE: 672 remove = true; 673 cipher = 0; 674 break; 675 case IW_ENCODE_ALG_WEP: 676 if (ext->key_len == 5) 677 cipher = WLAN_CIPHER_SUITE_WEP40; 678 else if (ext->key_len == 13) 679 cipher = WLAN_CIPHER_SUITE_WEP104; 680 else 681 return -EINVAL; 682 break; 683 case IW_ENCODE_ALG_TKIP: 684 cipher = WLAN_CIPHER_SUITE_TKIP; 685 break; 686 case IW_ENCODE_ALG_CCMP: 687 cipher = WLAN_CIPHER_SUITE_CCMP; 688 break; 689 case IW_ENCODE_ALG_AES_CMAC: 690 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 691 break; 692 default: 693 return -EOPNOTSUPP; 694 } 695 696 if (erq->flags & IW_ENCODE_DISABLED) 697 remove = true; 698 699 idx = erq->flags & IW_ENCODE_INDEX; 700 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 701 if (idx < 4 || idx > 5) { 702 idx = wdev->wext.default_mgmt_key; 703 if (idx < 0) 704 return -EINVAL; 705 } else 706 idx--; 707 } else { 708 if (idx < 1 || idx > 4) { 709 idx = wdev->wext.default_key; 710 if (idx < 0) 711 return -EINVAL; 712 } else 713 idx--; 714 } 715 716 addr = ext->addr.sa_data; 717 if (is_broadcast_ether_addr(addr)) 718 addr = NULL; 719 720 memset(¶ms, 0, sizeof(params)); 721 params.key = ext->key; 722 params.key_len = ext->key_len; 723 params.cipher = cipher; 724 725 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 726 params.seq = ext->rx_seq; 727 params.seq_len = 6; 728 } 729 730 wiphy_lock(wdev->wiphy); 731 ret = cfg80211_set_encryption( 732 rdev, dev, 733 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 734 addr, remove, 735 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 736 idx, ¶ms); 737 wiphy_unlock(wdev->wiphy); 738 739 return ret; 740 } 741 742 static int cfg80211_wext_giwencode(struct net_device *dev, 743 struct iw_request_info *info, 744 struct iw_point *erq, char *keybuf) 745 { 746 struct wireless_dev *wdev = dev->ieee80211_ptr; 747 int idx; 748 749 if (wdev->iftype != NL80211_IFTYPE_STATION && 750 wdev->iftype != NL80211_IFTYPE_ADHOC) 751 return -EOPNOTSUPP; 752 753 idx = erq->flags & IW_ENCODE_INDEX; 754 if (idx == 0) { 755 idx = wdev->wext.default_key; 756 if (idx < 0) 757 idx = 0; 758 } else if (idx < 1 || idx > 4) 759 return -EINVAL; 760 else 761 idx--; 762 763 erq->flags = idx + 1; 764 765 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 766 erq->flags |= IW_ENCODE_DISABLED; 767 erq->length = 0; 768 return 0; 769 } 770 771 erq->length = min_t(size_t, erq->length, 772 wdev->wext.keys->params[idx].key_len); 773 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 774 erq->flags |= IW_ENCODE_ENABLED; 775 776 return 0; 777 } 778 779 static int cfg80211_wext_siwfreq(struct net_device *dev, 780 struct iw_request_info *info, 781 struct iw_freq *wextfreq, char *extra) 782 { 783 struct wireless_dev *wdev = dev->ieee80211_ptr; 784 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 785 struct cfg80211_chan_def chandef = { 786 .width = NL80211_CHAN_WIDTH_20_NOHT, 787 }; 788 int freq, ret; 789 790 wiphy_lock(&rdev->wiphy); 791 792 switch (wdev->iftype) { 793 case NL80211_IFTYPE_STATION: 794 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 795 break; 796 case NL80211_IFTYPE_ADHOC: 797 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 798 break; 799 case NL80211_IFTYPE_MONITOR: 800 freq = cfg80211_wext_freq(wextfreq); 801 if (freq < 0) { 802 ret = freq; 803 break; 804 } 805 if (freq == 0) { 806 ret = -EINVAL; 807 break; 808 } 809 chandef.center_freq1 = freq; 810 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 811 if (!chandef.chan) { 812 ret = -EINVAL; 813 break; 814 } 815 ret = cfg80211_set_monitor_channel(rdev, &chandef); 816 break; 817 case NL80211_IFTYPE_MESH_POINT: 818 freq = cfg80211_wext_freq(wextfreq); 819 if (freq < 0) { 820 ret = freq; 821 break; 822 } 823 if (freq == 0) { 824 ret = -EINVAL; 825 break; 826 } 827 chandef.center_freq1 = freq; 828 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 829 if (!chandef.chan) { 830 ret = -EINVAL; 831 break; 832 } 833 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 834 break; 835 default: 836 ret = -EOPNOTSUPP; 837 break; 838 } 839 840 wiphy_unlock(&rdev->wiphy); 841 842 return ret; 843 } 844 845 static int cfg80211_wext_giwfreq(struct net_device *dev, 846 struct iw_request_info *info, 847 struct iw_freq *freq, char *extra) 848 { 849 struct wireless_dev *wdev = dev->ieee80211_ptr; 850 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 851 struct cfg80211_chan_def chandef = {}; 852 int ret; 853 854 wiphy_lock(&rdev->wiphy); 855 switch (wdev->iftype) { 856 case NL80211_IFTYPE_STATION: 857 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 858 break; 859 case NL80211_IFTYPE_ADHOC: 860 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 861 break; 862 case NL80211_IFTYPE_MONITOR: 863 if (!rdev->ops->get_channel) { 864 ret = -EINVAL; 865 break; 866 } 867 868 ret = rdev_get_channel(rdev, wdev, &chandef); 869 if (ret) 870 break; 871 freq->m = chandef.chan->center_freq; 872 freq->e = 6; 873 ret = 0; 874 break; 875 default: 876 ret = -EINVAL; 877 break; 878 } 879 880 wiphy_unlock(&rdev->wiphy); 881 882 return ret; 883 } 884 885 static int cfg80211_wext_siwtxpower(struct net_device *dev, 886 struct iw_request_info *info, 887 union iwreq_data *data, char *extra) 888 { 889 struct wireless_dev *wdev = dev->ieee80211_ptr; 890 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 891 enum nl80211_tx_power_setting type; 892 int dbm = 0; 893 int ret; 894 895 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 896 return -EINVAL; 897 if (data->txpower.flags & IW_TXPOW_RANGE) 898 return -EINVAL; 899 900 if (!rdev->ops->set_tx_power) 901 return -EOPNOTSUPP; 902 903 /* only change when not disabling */ 904 if (!data->txpower.disabled) { 905 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 906 907 if (data->txpower.fixed) { 908 /* 909 * wext doesn't support negative values, see 910 * below where it's for automatic 911 */ 912 if (data->txpower.value < 0) 913 return -EINVAL; 914 dbm = data->txpower.value; 915 type = NL80211_TX_POWER_FIXED; 916 /* TODO: do regulatory check! */ 917 } else { 918 /* 919 * Automatic power level setting, max being the value 920 * passed in from userland. 921 */ 922 if (data->txpower.value < 0) { 923 type = NL80211_TX_POWER_AUTOMATIC; 924 } else { 925 dbm = data->txpower.value; 926 type = NL80211_TX_POWER_LIMITED; 927 } 928 } 929 } else { 930 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 931 schedule_work(&rdev->rfkill_block); 932 return 0; 933 } 934 935 wiphy_lock(&rdev->wiphy); 936 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 937 wiphy_unlock(&rdev->wiphy); 938 939 return ret; 940 } 941 942 static int cfg80211_wext_giwtxpower(struct net_device *dev, 943 struct iw_request_info *info, 944 union iwreq_data *data, char *extra) 945 { 946 struct wireless_dev *wdev = dev->ieee80211_ptr; 947 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 948 int err, val; 949 950 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 951 return -EINVAL; 952 if (data->txpower.flags & IW_TXPOW_RANGE) 953 return -EINVAL; 954 955 if (!rdev->ops->get_tx_power) 956 return -EOPNOTSUPP; 957 958 wiphy_lock(&rdev->wiphy); 959 err = rdev_get_tx_power(rdev, wdev, &val); 960 wiphy_unlock(&rdev->wiphy); 961 if (err) 962 return err; 963 964 /* well... oh well */ 965 data->txpower.fixed = 1; 966 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 967 data->txpower.value = val; 968 data->txpower.flags = IW_TXPOW_DBM; 969 970 return 0; 971 } 972 973 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 974 s32 auth_alg) 975 { 976 int nr_alg = 0; 977 978 if (!auth_alg) 979 return -EINVAL; 980 981 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 982 IW_AUTH_ALG_SHARED_KEY | 983 IW_AUTH_ALG_LEAP)) 984 return -EINVAL; 985 986 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 987 nr_alg++; 988 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 989 } 990 991 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 992 nr_alg++; 993 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 994 } 995 996 if (auth_alg & IW_AUTH_ALG_LEAP) { 997 nr_alg++; 998 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 999 } 1000 1001 if (nr_alg > 1) 1002 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 1003 1004 return 0; 1005 } 1006 1007 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 1008 { 1009 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 1010 IW_AUTH_WPA_VERSION_WPA2| 1011 IW_AUTH_WPA_VERSION_DISABLED)) 1012 return -EINVAL; 1013 1014 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 1015 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 1016 IW_AUTH_WPA_VERSION_WPA2))) 1017 return -EINVAL; 1018 1019 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 1020 wdev->wext.connect.crypto.wpa_versions &= 1021 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 1022 1023 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 1024 wdev->wext.connect.crypto.wpa_versions |= 1025 NL80211_WPA_VERSION_1; 1026 1027 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 1028 wdev->wext.connect.crypto.wpa_versions |= 1029 NL80211_WPA_VERSION_2; 1030 1031 return 0; 1032 } 1033 1034 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 1035 { 1036 if (cipher & IW_AUTH_CIPHER_WEP40) 1037 wdev->wext.connect.crypto.cipher_group = 1038 WLAN_CIPHER_SUITE_WEP40; 1039 else if (cipher & IW_AUTH_CIPHER_WEP104) 1040 wdev->wext.connect.crypto.cipher_group = 1041 WLAN_CIPHER_SUITE_WEP104; 1042 else if (cipher & IW_AUTH_CIPHER_TKIP) 1043 wdev->wext.connect.crypto.cipher_group = 1044 WLAN_CIPHER_SUITE_TKIP; 1045 else if (cipher & IW_AUTH_CIPHER_CCMP) 1046 wdev->wext.connect.crypto.cipher_group = 1047 WLAN_CIPHER_SUITE_CCMP; 1048 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1049 wdev->wext.connect.crypto.cipher_group = 1050 WLAN_CIPHER_SUITE_AES_CMAC; 1051 else if (cipher & IW_AUTH_CIPHER_NONE) 1052 wdev->wext.connect.crypto.cipher_group = 0; 1053 else 1054 return -EINVAL; 1055 1056 return 0; 1057 } 1058 1059 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1060 { 1061 int nr_ciphers = 0; 1062 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1063 1064 if (cipher & IW_AUTH_CIPHER_WEP40) { 1065 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1066 nr_ciphers++; 1067 } 1068 1069 if (cipher & IW_AUTH_CIPHER_WEP104) { 1070 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1071 nr_ciphers++; 1072 } 1073 1074 if (cipher & IW_AUTH_CIPHER_TKIP) { 1075 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1076 nr_ciphers++; 1077 } 1078 1079 if (cipher & IW_AUTH_CIPHER_CCMP) { 1080 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1081 nr_ciphers++; 1082 } 1083 1084 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1085 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1086 nr_ciphers++; 1087 } 1088 1089 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1090 1091 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1092 1093 return 0; 1094 } 1095 1096 1097 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1098 { 1099 int nr_akm_suites = 0; 1100 1101 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1102 IW_AUTH_KEY_MGMT_PSK)) 1103 return -EINVAL; 1104 1105 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1106 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1107 WLAN_AKM_SUITE_8021X; 1108 nr_akm_suites++; 1109 } 1110 1111 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1112 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1113 WLAN_AKM_SUITE_PSK; 1114 nr_akm_suites++; 1115 } 1116 1117 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1118 1119 return 0; 1120 } 1121 1122 static int cfg80211_wext_siwauth(struct net_device *dev, 1123 struct iw_request_info *info, 1124 struct iw_param *data, char *extra) 1125 { 1126 struct wireless_dev *wdev = dev->ieee80211_ptr; 1127 1128 if (wdev->iftype != NL80211_IFTYPE_STATION) 1129 return -EOPNOTSUPP; 1130 1131 switch (data->flags & IW_AUTH_INDEX) { 1132 case IW_AUTH_PRIVACY_INVOKED: 1133 wdev->wext.connect.privacy = data->value; 1134 return 0; 1135 case IW_AUTH_WPA_VERSION: 1136 return cfg80211_set_wpa_version(wdev, data->value); 1137 case IW_AUTH_CIPHER_GROUP: 1138 return cfg80211_set_cipher_group(wdev, data->value); 1139 case IW_AUTH_KEY_MGMT: 1140 return cfg80211_set_key_mgt(wdev, data->value); 1141 case IW_AUTH_CIPHER_PAIRWISE: 1142 return cfg80211_set_cipher_pairwise(wdev, data->value); 1143 case IW_AUTH_80211_AUTH_ALG: 1144 return cfg80211_set_auth_alg(wdev, data->value); 1145 case IW_AUTH_WPA_ENABLED: 1146 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1147 case IW_AUTH_DROP_UNENCRYPTED: 1148 case IW_AUTH_MFP: 1149 return 0; 1150 default: 1151 return -EOPNOTSUPP; 1152 } 1153 } 1154 1155 static int cfg80211_wext_giwauth(struct net_device *dev, 1156 struct iw_request_info *info, 1157 struct iw_param *data, char *extra) 1158 { 1159 /* XXX: what do we need? */ 1160 1161 return -EOPNOTSUPP; 1162 } 1163 1164 static int cfg80211_wext_siwpower(struct net_device *dev, 1165 struct iw_request_info *info, 1166 struct iw_param *wrq, char *extra) 1167 { 1168 struct wireless_dev *wdev = dev->ieee80211_ptr; 1169 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1170 bool ps; 1171 int timeout = wdev->ps_timeout; 1172 int err; 1173 1174 if (wdev->iftype != NL80211_IFTYPE_STATION) 1175 return -EINVAL; 1176 1177 if (!rdev->ops->set_power_mgmt) 1178 return -EOPNOTSUPP; 1179 1180 if (wrq->disabled) { 1181 ps = false; 1182 } else { 1183 switch (wrq->flags & IW_POWER_MODE) { 1184 case IW_POWER_ON: /* If not specified */ 1185 case IW_POWER_MODE: /* If set all mask */ 1186 case IW_POWER_ALL_R: /* If explicitely state all */ 1187 ps = true; 1188 break; 1189 default: /* Otherwise we ignore */ 1190 return -EINVAL; 1191 } 1192 1193 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1194 return -EINVAL; 1195 1196 if (wrq->flags & IW_POWER_TIMEOUT) 1197 timeout = wrq->value / 1000; 1198 } 1199 1200 wiphy_lock(&rdev->wiphy); 1201 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1202 wiphy_unlock(&rdev->wiphy); 1203 if (err) 1204 return err; 1205 1206 wdev->ps = ps; 1207 wdev->ps_timeout = timeout; 1208 1209 return 0; 1210 1211 } 1212 1213 static int cfg80211_wext_giwpower(struct net_device *dev, 1214 struct iw_request_info *info, 1215 struct iw_param *wrq, char *extra) 1216 { 1217 struct wireless_dev *wdev = dev->ieee80211_ptr; 1218 1219 wrq->disabled = !wdev->ps; 1220 1221 return 0; 1222 } 1223 1224 static int cfg80211_wext_siwrate(struct net_device *dev, 1225 struct iw_request_info *info, 1226 struct iw_param *rate, char *extra) 1227 { 1228 struct wireless_dev *wdev = dev->ieee80211_ptr; 1229 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1230 struct cfg80211_bitrate_mask mask; 1231 u32 fixed, maxrate; 1232 struct ieee80211_supported_band *sband; 1233 int band, ridx, ret; 1234 bool match = false; 1235 1236 if (!rdev->ops->set_bitrate_mask) 1237 return -EOPNOTSUPP; 1238 1239 memset(&mask, 0, sizeof(mask)); 1240 fixed = 0; 1241 maxrate = (u32)-1; 1242 1243 if (rate->value < 0) { 1244 /* nothing */ 1245 } else if (rate->fixed) { 1246 fixed = rate->value / 100000; 1247 } else { 1248 maxrate = rate->value / 100000; 1249 } 1250 1251 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1252 sband = wdev->wiphy->bands[band]; 1253 if (sband == NULL) 1254 continue; 1255 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1256 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1257 if (fixed == srate->bitrate) { 1258 mask.control[band].legacy = 1 << ridx; 1259 match = true; 1260 break; 1261 } 1262 if (srate->bitrate <= maxrate) { 1263 mask.control[band].legacy |= 1 << ridx; 1264 match = true; 1265 } 1266 } 1267 } 1268 1269 if (!match) 1270 return -EINVAL; 1271 1272 wiphy_lock(&rdev->wiphy); 1273 ret = rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 1274 wiphy_unlock(&rdev->wiphy); 1275 1276 return ret; 1277 } 1278 1279 static int cfg80211_wext_giwrate(struct net_device *dev, 1280 struct iw_request_info *info, 1281 struct iw_param *rate, char *extra) 1282 { 1283 struct wireless_dev *wdev = dev->ieee80211_ptr; 1284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1285 struct station_info sinfo = {}; 1286 u8 addr[ETH_ALEN]; 1287 int err; 1288 1289 if (wdev->iftype != NL80211_IFTYPE_STATION) 1290 return -EOPNOTSUPP; 1291 1292 if (!rdev->ops->get_station) 1293 return -EOPNOTSUPP; 1294 1295 err = 0; 1296 wdev_lock(wdev); 1297 if (wdev->current_bss) 1298 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN); 1299 else 1300 err = -EOPNOTSUPP; 1301 wdev_unlock(wdev); 1302 if (err) 1303 return err; 1304 1305 wiphy_lock(&rdev->wiphy); 1306 err = rdev_get_station(rdev, dev, addr, &sinfo); 1307 wiphy_unlock(&rdev->wiphy); 1308 if (err) 1309 return err; 1310 1311 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1312 err = -EOPNOTSUPP; 1313 goto free; 1314 } 1315 1316 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1317 1318 free: 1319 cfg80211_sinfo_release_content(&sinfo); 1320 return err; 1321 } 1322 1323 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1324 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1325 { 1326 struct wireless_dev *wdev = dev->ieee80211_ptr; 1327 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1328 /* we are under RTNL - globally locked - so can use static structs */ 1329 static struct iw_statistics wstats; 1330 static struct station_info sinfo = {}; 1331 u8 bssid[ETH_ALEN]; 1332 int ret; 1333 1334 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1335 return NULL; 1336 1337 if (!rdev->ops->get_station) 1338 return NULL; 1339 1340 /* Grab BSSID of current BSS, if any */ 1341 wdev_lock(wdev); 1342 if (!wdev->current_bss) { 1343 wdev_unlock(wdev); 1344 return NULL; 1345 } 1346 memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); 1347 wdev_unlock(wdev); 1348 1349 memset(&sinfo, 0, sizeof(sinfo)); 1350 1351 wiphy_lock(&rdev->wiphy); 1352 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1353 wiphy_unlock(&rdev->wiphy); 1354 1355 if (ret) 1356 return NULL; 1357 1358 memset(&wstats, 0, sizeof(wstats)); 1359 1360 switch (rdev->wiphy.signal_type) { 1361 case CFG80211_SIGNAL_TYPE_MBM: 1362 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1363 int sig = sinfo.signal; 1364 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1365 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1366 wstats.qual.updated |= IW_QUAL_DBM; 1367 wstats.qual.level = sig; 1368 if (sig < -110) 1369 sig = -110; 1370 else if (sig > -40) 1371 sig = -40; 1372 wstats.qual.qual = sig + 110; 1373 break; 1374 } 1375 fallthrough; 1376 case CFG80211_SIGNAL_TYPE_UNSPEC: 1377 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1378 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1379 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1380 wstats.qual.level = sinfo.signal; 1381 wstats.qual.qual = sinfo.signal; 1382 break; 1383 } 1384 fallthrough; 1385 default: 1386 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1387 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1388 } 1389 1390 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1391 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1392 wstats.discard.misc = sinfo.rx_dropped_misc; 1393 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1394 wstats.discard.retries = sinfo.tx_failed; 1395 1396 cfg80211_sinfo_release_content(&sinfo); 1397 1398 return &wstats; 1399 } 1400 1401 static int cfg80211_wext_siwap(struct net_device *dev, 1402 struct iw_request_info *info, 1403 struct sockaddr *ap_addr, char *extra) 1404 { 1405 struct wireless_dev *wdev = dev->ieee80211_ptr; 1406 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1407 int ret; 1408 1409 wiphy_lock(&rdev->wiphy); 1410 switch (wdev->iftype) { 1411 case NL80211_IFTYPE_ADHOC: 1412 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1413 break; 1414 case NL80211_IFTYPE_STATION: 1415 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1416 break; 1417 default: 1418 ret = -EOPNOTSUPP; 1419 break; 1420 } 1421 wiphy_unlock(&rdev->wiphy); 1422 1423 return ret; 1424 } 1425 1426 static int cfg80211_wext_giwap(struct net_device *dev, 1427 struct iw_request_info *info, 1428 struct sockaddr *ap_addr, char *extra) 1429 { 1430 struct wireless_dev *wdev = dev->ieee80211_ptr; 1431 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1432 int ret; 1433 1434 wiphy_lock(&rdev->wiphy); 1435 switch (wdev->iftype) { 1436 case NL80211_IFTYPE_ADHOC: 1437 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1438 break; 1439 case NL80211_IFTYPE_STATION: 1440 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1441 break; 1442 default: 1443 ret = -EOPNOTSUPP; 1444 break; 1445 } 1446 wiphy_unlock(&rdev->wiphy); 1447 1448 return ret; 1449 } 1450 1451 static int cfg80211_wext_siwessid(struct net_device *dev, 1452 struct iw_request_info *info, 1453 struct iw_point *data, char *ssid) 1454 { 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_siwessid(dev, info, data, ssid); 1463 break; 1464 case NL80211_IFTYPE_STATION: 1465 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 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_giwessid(struct net_device *dev, 1477 struct iw_request_info *info, 1478 struct iw_point *data, char *ssid) 1479 { 1480 struct wireless_dev *wdev = dev->ieee80211_ptr; 1481 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1482 int ret; 1483 1484 data->flags = 0; 1485 data->length = 0; 1486 1487 wiphy_lock(&rdev->wiphy); 1488 switch (wdev->iftype) { 1489 case NL80211_IFTYPE_ADHOC: 1490 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1491 break; 1492 case NL80211_IFTYPE_STATION: 1493 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1494 break; 1495 default: 1496 ret = -EOPNOTSUPP; 1497 break; 1498 } 1499 wiphy_unlock(&rdev->wiphy); 1500 1501 return ret; 1502 } 1503 1504 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1505 struct iw_request_info *info, 1506 struct iw_point *data, char *extra) 1507 { 1508 struct wireless_dev *wdev = dev->ieee80211_ptr; 1509 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1510 struct cfg80211_pmksa cfg_pmksa; 1511 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1512 int ret; 1513 1514 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1515 1516 if (wdev->iftype != NL80211_IFTYPE_STATION) 1517 return -EINVAL; 1518 1519 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1520 cfg_pmksa.pmkid = pmksa->pmkid; 1521 1522 wiphy_lock(&rdev->wiphy); 1523 switch (pmksa->cmd) { 1524 case IW_PMKSA_ADD: 1525 if (!rdev->ops->set_pmksa) { 1526 ret = -EOPNOTSUPP; 1527 break; 1528 } 1529 1530 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1531 break; 1532 case IW_PMKSA_REMOVE: 1533 if (!rdev->ops->del_pmksa) { 1534 ret = -EOPNOTSUPP; 1535 break; 1536 } 1537 1538 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1539 break; 1540 case IW_PMKSA_FLUSH: 1541 if (!rdev->ops->flush_pmksa) { 1542 ret = -EOPNOTSUPP; 1543 break; 1544 } 1545 1546 ret = rdev_flush_pmksa(rdev, dev); 1547 break; 1548 default: 1549 ret = -EOPNOTSUPP; 1550 break; 1551 } 1552 wiphy_unlock(&rdev->wiphy); 1553 1554 return ret; 1555 } 1556 1557 #define DEFINE_WEXT_COMPAT_STUB(func, type) \ 1558 static int __ ## func(struct net_device *dev, \ 1559 struct iw_request_info *info, \ 1560 union iwreq_data *wrqu, \ 1561 char *extra) \ 1562 { \ 1563 return func(dev, info, (type *)wrqu, extra); \ 1564 } 1565 1566 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char) 1567 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq) 1568 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq) 1569 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32) 1570 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32) 1571 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point) 1572 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr) 1573 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr) 1574 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point) 1575 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point) 1576 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point) 1577 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point) 1578 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param) 1579 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param) 1580 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param) 1581 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param) 1582 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param) 1583 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param) 1584 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param) 1585 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param) 1586 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point) 1587 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point) 1588 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param) 1589 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param) 1590 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point) 1591 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param) 1592 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param) 1593 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point) 1594 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point) 1595 1596 static const iw_handler cfg80211_handlers[] = { 1597 [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname, 1598 [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq, 1599 [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq, 1600 [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode, 1601 [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode, 1602 [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange, 1603 [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap, 1604 [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap, 1605 [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme, 1606 [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan, 1607 [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan, 1608 [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid, 1609 [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid, 1610 [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate, 1611 [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate, 1612 [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts, 1613 [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts, 1614 [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag, 1615 [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag, 1616 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower, 1617 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower, 1618 [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry, 1619 [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry, 1620 [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode, 1621 [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode, 1622 [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower, 1623 [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower, 1624 [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie, 1625 [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth, 1626 [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth, 1627 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext, 1628 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa, 1629 }; 1630 1631 const struct iw_handler_def cfg80211_wext_handler = { 1632 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1633 .standard = cfg80211_handlers, 1634 .get_wireless_stats = cfg80211_wireless_stats, 1635 }; 1636