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 43 rdev = wiphy_to_rdev(wdev->wiphy); 44 45 switch (*mode) { 46 case IW_MODE_INFRA: 47 type = NL80211_IFTYPE_STATION; 48 break; 49 case IW_MODE_ADHOC: 50 type = NL80211_IFTYPE_ADHOC; 51 break; 52 case IW_MODE_MONITOR: 53 type = NL80211_IFTYPE_MONITOR; 54 break; 55 default: 56 return -EINVAL; 57 } 58 59 if (type == wdev->iftype) 60 return 0; 61 62 memset(&vifparams, 0, sizeof(vifparams)); 63 64 return cfg80211_change_iface(rdev, dev, type, &vifparams); 65 } 66 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode); 67 68 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 69 u32 *mode, char *extra) 70 { 71 struct wireless_dev *wdev = dev->ieee80211_ptr; 72 73 if (!wdev) 74 return -EOPNOTSUPP; 75 76 switch (wdev->iftype) { 77 case NL80211_IFTYPE_AP: 78 *mode = IW_MODE_MASTER; 79 break; 80 case NL80211_IFTYPE_STATION: 81 *mode = IW_MODE_INFRA; 82 break; 83 case NL80211_IFTYPE_ADHOC: 84 *mode = IW_MODE_ADHOC; 85 break; 86 case NL80211_IFTYPE_MONITOR: 87 *mode = IW_MODE_MONITOR; 88 break; 89 case NL80211_IFTYPE_WDS: 90 *mode = IW_MODE_REPEAT; 91 break; 92 case NL80211_IFTYPE_AP_VLAN: 93 *mode = IW_MODE_SECOND; /* FIXME */ 94 break; 95 default: 96 *mode = IW_MODE_AUTO; 97 break; 98 } 99 return 0; 100 } 101 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode); 102 103 104 int cfg80211_wext_giwrange(struct net_device *dev, 105 struct iw_request_info *info, 106 struct iw_point *data, char *extra) 107 { 108 struct wireless_dev *wdev = dev->ieee80211_ptr; 109 struct iw_range *range = (struct iw_range *) extra; 110 enum nl80211_band band; 111 int i, c = 0; 112 113 if (!wdev) 114 return -EOPNOTSUPP; 115 116 data->length = sizeof(struct iw_range); 117 memset(range, 0, sizeof(struct iw_range)); 118 119 range->we_version_compiled = WIRELESS_EXT; 120 range->we_version_source = 21; 121 range->retry_capa = IW_RETRY_LIMIT; 122 range->retry_flags = IW_RETRY_LIMIT; 123 range->min_retry = 0; 124 range->max_retry = 255; 125 range->min_rts = 0; 126 range->max_rts = 2347; 127 range->min_frag = 256; 128 range->max_frag = 2346; 129 130 range->max_encoding_tokens = 4; 131 132 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 133 134 switch (wdev->wiphy->signal_type) { 135 case CFG80211_SIGNAL_TYPE_NONE: 136 break; 137 case CFG80211_SIGNAL_TYPE_MBM: 138 range->max_qual.level = (u8)-110; 139 range->max_qual.qual = 70; 140 range->avg_qual.qual = 35; 141 range->max_qual.updated |= IW_QUAL_DBM; 142 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 143 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 144 break; 145 case CFG80211_SIGNAL_TYPE_UNSPEC: 146 range->max_qual.level = 100; 147 range->max_qual.qual = 100; 148 range->avg_qual.qual = 50; 149 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 150 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 151 break; 152 } 153 154 range->avg_qual.level = range->max_qual.level / 2; 155 range->avg_qual.noise = range->max_qual.noise / 2; 156 range->avg_qual.updated = range->max_qual.updated; 157 158 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) { 159 switch (wdev->wiphy->cipher_suites[i]) { 160 case WLAN_CIPHER_SUITE_TKIP: 161 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP | 162 IW_ENC_CAPA_WPA); 163 break; 164 165 case WLAN_CIPHER_SUITE_CCMP: 166 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP | 167 IW_ENC_CAPA_WPA2); 168 break; 169 170 case WLAN_CIPHER_SUITE_WEP40: 171 range->encoding_size[range->num_encoding_sizes++] = 172 WLAN_KEY_LEN_WEP40; 173 break; 174 175 case WLAN_CIPHER_SUITE_WEP104: 176 range->encoding_size[range->num_encoding_sizes++] = 177 WLAN_KEY_LEN_WEP104; 178 break; 179 } 180 } 181 182 for (band = 0; band < NUM_NL80211_BANDS; band ++) { 183 struct ieee80211_supported_band *sband; 184 185 sband = wdev->wiphy->bands[band]; 186 187 if (!sband) 188 continue; 189 190 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { 191 struct ieee80211_channel *chan = &sband->channels[i]; 192 193 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { 194 range->freq[c].i = 195 ieee80211_frequency_to_channel( 196 chan->center_freq); 197 range->freq[c].m = chan->center_freq; 198 range->freq[c].e = 6; 199 c++; 200 } 201 } 202 } 203 range->num_channels = c; 204 range->num_frequency = c; 205 206 IW_EVENT_CAPA_SET_KERNEL(range->event_capa); 207 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); 208 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); 209 210 if (wdev->wiphy->max_scan_ssids > 0) 211 range->scan_capa |= IW_SCAN_CAPA_ESSID; 212 213 return 0; 214 } 215 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange); 216 217 218 /** 219 * cfg80211_wext_freq - get wext frequency for non-"auto" 220 * @freq: the wext freq encoding 221 * 222 * Returns a frequency, or a negative error code, or 0 for auto. 223 */ 224 int cfg80211_wext_freq(struct iw_freq *freq) 225 { 226 /* 227 * Parse frequency - return 0 for auto and 228 * -EINVAL for impossible things. 229 */ 230 if (freq->e == 0) { 231 enum nl80211_band band = NL80211_BAND_2GHZ; 232 if (freq->m < 0) 233 return 0; 234 if (freq->m > 14) 235 band = NL80211_BAND_5GHZ; 236 return ieee80211_channel_to_frequency(freq->m, band); 237 } else { 238 int i, div = 1000000; 239 for (i = 0; i < freq->e; i++) 240 div /= 10; 241 if (div <= 0) 242 return -EINVAL; 243 return freq->m / div; 244 } 245 } 246 247 int cfg80211_wext_siwrts(struct net_device *dev, 248 struct iw_request_info *info, 249 struct iw_param *rts, char *extra) 250 { 251 struct wireless_dev *wdev = dev->ieee80211_ptr; 252 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 253 u32 orts = wdev->wiphy->rts_threshold; 254 int err; 255 256 wiphy_lock(&rdev->wiphy); 257 if (rts->disabled || !rts->fixed) { 258 wdev->wiphy->rts_threshold = (u32) -1; 259 } else if (rts->value < 0) { 260 err = -EINVAL; 261 goto out; 262 } else { 263 wdev->wiphy->rts_threshold = rts->value; 264 } 265 266 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD); 267 268 if (err) 269 wdev->wiphy->rts_threshold = orts; 270 271 out: 272 wiphy_unlock(&rdev->wiphy); 273 return err; 274 } 275 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts); 276 277 int cfg80211_wext_giwrts(struct net_device *dev, 278 struct iw_request_info *info, 279 struct iw_param *rts, char *extra) 280 { 281 struct wireless_dev *wdev = dev->ieee80211_ptr; 282 283 rts->value = wdev->wiphy->rts_threshold; 284 rts->disabled = rts->value == (u32) -1; 285 rts->fixed = 1; 286 287 return 0; 288 } 289 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts); 290 291 int cfg80211_wext_siwfrag(struct net_device *dev, 292 struct iw_request_info *info, 293 struct iw_param *frag, char *extra) 294 { 295 struct wireless_dev *wdev = dev->ieee80211_ptr; 296 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 297 u32 ofrag = wdev->wiphy->frag_threshold; 298 int err; 299 300 wiphy_lock(&rdev->wiphy); 301 if (frag->disabled || !frag->fixed) { 302 wdev->wiphy->frag_threshold = (u32) -1; 303 } else if (frag->value < 256) { 304 err = -EINVAL; 305 goto out; 306 } else { 307 /* Fragment length must be even, so strip LSB. */ 308 wdev->wiphy->frag_threshold = frag->value & ~0x1; 309 } 310 311 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD); 312 if (err) 313 wdev->wiphy->frag_threshold = ofrag; 314 out: 315 wiphy_unlock(&rdev->wiphy); 316 317 return err; 318 } 319 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag); 320 321 int cfg80211_wext_giwfrag(struct net_device *dev, 322 struct iw_request_info *info, 323 struct iw_param *frag, char *extra) 324 { 325 struct wireless_dev *wdev = dev->ieee80211_ptr; 326 327 frag->value = wdev->wiphy->frag_threshold; 328 frag->disabled = frag->value == (u32) -1; 329 frag->fixed = 1; 330 331 return 0; 332 } 333 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag); 334 335 static int cfg80211_wext_siwretry(struct net_device *dev, 336 struct iw_request_info *info, 337 struct iw_param *retry, char *extra) 338 { 339 struct wireless_dev *wdev = dev->ieee80211_ptr; 340 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 341 u32 changed = 0; 342 u8 olong = wdev->wiphy->retry_long; 343 u8 oshort = wdev->wiphy->retry_short; 344 int err; 345 346 if (retry->disabled || retry->value < 1 || retry->value > 255 || 347 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) 348 return -EINVAL; 349 350 wiphy_lock(&rdev->wiphy); 351 if (retry->flags & IW_RETRY_LONG) { 352 wdev->wiphy->retry_long = retry->value; 353 changed |= WIPHY_PARAM_RETRY_LONG; 354 } else if (retry->flags & IW_RETRY_SHORT) { 355 wdev->wiphy->retry_short = retry->value; 356 changed |= WIPHY_PARAM_RETRY_SHORT; 357 } else { 358 wdev->wiphy->retry_short = retry->value; 359 wdev->wiphy->retry_long = retry->value; 360 changed |= WIPHY_PARAM_RETRY_LONG; 361 changed |= WIPHY_PARAM_RETRY_SHORT; 362 } 363 364 err = rdev_set_wiphy_params(rdev, changed); 365 if (err) { 366 wdev->wiphy->retry_short = oshort; 367 wdev->wiphy->retry_long = olong; 368 } 369 wiphy_unlock(&rdev->wiphy); 370 371 return err; 372 } 373 374 int cfg80211_wext_giwretry(struct net_device *dev, 375 struct iw_request_info *info, 376 struct iw_param *retry, char *extra) 377 { 378 struct wireless_dev *wdev = dev->ieee80211_ptr; 379 380 retry->disabled = 0; 381 382 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 383 /* 384 * First return short value, iwconfig will ask long value 385 * later if needed 386 */ 387 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 388 retry->value = wdev->wiphy->retry_short; 389 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 390 retry->flags |= IW_RETRY_LONG; 391 392 return 0; 393 } 394 395 if (retry->flags & IW_RETRY_LONG) { 396 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 397 retry->value = wdev->wiphy->retry_long; 398 } 399 400 return 0; 401 } 402 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry); 403 404 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 405 struct net_device *dev, bool pairwise, 406 const u8 *addr, bool remove, bool tx_key, 407 int idx, struct key_params *params) 408 { 409 struct wireless_dev *wdev = dev->ieee80211_ptr; 410 int err, i; 411 bool rejoin = false; 412 413 if (pairwise && !addr) 414 return -EINVAL; 415 416 /* 417 * In many cases we won't actually need this, but it's better 418 * to do it first in case the allocation fails. Don't use wext. 419 */ 420 if (!wdev->wext.keys) { 421 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys), 422 GFP_KERNEL); 423 if (!wdev->wext.keys) 424 return -ENOMEM; 425 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) 426 wdev->wext.keys->params[i].key = 427 wdev->wext.keys->data[i]; 428 } 429 430 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 431 wdev->iftype != NL80211_IFTYPE_STATION) 432 return -EOPNOTSUPP; 433 434 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 435 if (!wdev->current_bss) 436 return -ENOLINK; 437 438 if (!rdev->ops->set_default_mgmt_key) 439 return -EOPNOTSUPP; 440 441 if (idx < 4 || idx > 5) 442 return -EINVAL; 443 } else if (idx < 0 || idx > 3) 444 return -EINVAL; 445 446 if (remove) { 447 err = 0; 448 if (wdev->current_bss) { 449 /* 450 * If removing the current TX key, we will need to 451 * join a new IBSS without the privacy bit clear. 452 */ 453 if (idx == wdev->wext.default_key && 454 wdev->iftype == NL80211_IFTYPE_ADHOC) { 455 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 456 rejoin = true; 457 } 458 459 if (!pairwise && addr && 460 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 461 err = -ENOENT; 462 else 463 err = rdev_del_key(rdev, dev, idx, pairwise, 464 addr); 465 } 466 wdev->wext.connect.privacy = false; 467 /* 468 * Applications using wireless extensions expect to be 469 * able to delete keys that don't exist, so allow that. 470 */ 471 if (err == -ENOENT) 472 err = 0; 473 if (!err) { 474 if (!addr && idx < 4) { 475 memset(wdev->wext.keys->data[idx], 0, 476 sizeof(wdev->wext.keys->data[idx])); 477 wdev->wext.keys->params[idx].key_len = 0; 478 wdev->wext.keys->params[idx].cipher = 0; 479 } 480 if (idx == wdev->wext.default_key) 481 wdev->wext.default_key = -1; 482 else if (idx == wdev->wext.default_mgmt_key) 483 wdev->wext.default_mgmt_key = -1; 484 } 485 486 if (!err && rejoin) 487 err = cfg80211_ibss_wext_join(rdev, wdev); 488 489 return err; 490 } 491 492 if (addr) 493 tx_key = false; 494 495 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) 496 return -EINVAL; 497 498 err = 0; 499 if (wdev->current_bss) 500 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params); 501 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 502 params->cipher != WLAN_CIPHER_SUITE_WEP104) 503 return -EINVAL; 504 if (err) 505 return err; 506 507 /* 508 * We only need to store WEP keys, since they're the only keys that 509 * can be set before a connection is established and persist after 510 * disconnecting. 511 */ 512 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 513 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 514 wdev->wext.keys->params[idx] = *params; 515 memcpy(wdev->wext.keys->data[idx], 516 params->key, params->key_len); 517 wdev->wext.keys->params[idx].key = 518 wdev->wext.keys->data[idx]; 519 } 520 521 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 522 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 523 (tx_key || (!addr && wdev->wext.default_key == -1))) { 524 if (wdev->current_bss) { 525 /* 526 * If we are getting a new TX key from not having 527 * had one before we need to join a new IBSS with 528 * the privacy bit set. 529 */ 530 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 531 wdev->wext.default_key == -1) { 532 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 533 rejoin = true; 534 } 535 err = rdev_set_default_key(rdev, dev, idx, true, true); 536 } 537 if (!err) { 538 wdev->wext.default_key = idx; 539 if (rejoin) 540 err = cfg80211_ibss_wext_join(rdev, wdev); 541 } 542 return err; 543 } 544 545 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 546 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 547 if (wdev->current_bss) 548 err = rdev_set_default_mgmt_key(rdev, dev, idx); 549 if (!err) 550 wdev->wext.default_mgmt_key = idx; 551 return err; 552 } 553 554 return 0; 555 } 556 557 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 558 struct net_device *dev, bool pairwise, 559 const u8 *addr, bool remove, bool tx_key, 560 int idx, struct key_params *params) 561 { 562 int err; 563 564 wdev_lock(dev->ieee80211_ptr); 565 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr, 566 remove, tx_key, idx, params); 567 wdev_unlock(dev->ieee80211_ptr); 568 569 return err; 570 } 571 572 static int cfg80211_wext_siwencode(struct net_device *dev, 573 struct iw_request_info *info, 574 struct iw_point *erq, char *keybuf) 575 { 576 struct wireless_dev *wdev = dev->ieee80211_ptr; 577 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 578 int idx, err; 579 bool remove = false; 580 struct key_params params; 581 582 if (wdev->iftype != NL80211_IFTYPE_STATION && 583 wdev->iftype != NL80211_IFTYPE_ADHOC) 584 return -EOPNOTSUPP; 585 586 /* no use -- only MFP (set_default_mgmt_key) is optional */ 587 if (!rdev->ops->del_key || 588 !rdev->ops->add_key || 589 !rdev->ops->set_default_key) 590 return -EOPNOTSUPP; 591 592 wiphy_lock(&rdev->wiphy); 593 idx = erq->flags & IW_ENCODE_INDEX; 594 if (idx == 0) { 595 idx = wdev->wext.default_key; 596 if (idx < 0) 597 idx = 0; 598 } else if (idx < 1 || idx > 4) { 599 err = -EINVAL; 600 goto out; 601 } else { 602 idx--; 603 } 604 605 if (erq->flags & IW_ENCODE_DISABLED) 606 remove = true; 607 else if (erq->length == 0) { 608 /* No key data - just set the default TX key index */ 609 err = 0; 610 wdev_lock(wdev); 611 if (wdev->current_bss) 612 err = rdev_set_default_key(rdev, dev, idx, true, 613 true); 614 if (!err) 615 wdev->wext.default_key = idx; 616 wdev_unlock(wdev); 617 goto out; 618 } 619 620 memset(¶ms, 0, sizeof(params)); 621 params.key = keybuf; 622 params.key_len = erq->length; 623 if (erq->length == 5) { 624 params.cipher = WLAN_CIPHER_SUITE_WEP40; 625 } else if (erq->length == 13) { 626 params.cipher = WLAN_CIPHER_SUITE_WEP104; 627 } else if (!remove) { 628 err = -EINVAL; 629 goto out; 630 } 631 632 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove, 633 wdev->wext.default_key == -1, 634 idx, ¶ms); 635 out: 636 wiphy_unlock(&rdev->wiphy); 637 638 return err; 639 } 640 641 static int cfg80211_wext_siwencodeext(struct net_device *dev, 642 struct iw_request_info *info, 643 struct iw_point *erq, char *extra) 644 { 645 struct wireless_dev *wdev = dev->ieee80211_ptr; 646 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 647 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 648 const u8 *addr; 649 int idx; 650 bool remove = false; 651 struct key_params params; 652 u32 cipher; 653 654 if (wdev->iftype != NL80211_IFTYPE_STATION && 655 wdev->iftype != NL80211_IFTYPE_ADHOC) 656 return -EOPNOTSUPP; 657 658 /* no use -- only MFP (set_default_mgmt_key) is optional */ 659 if (!rdev->ops->del_key || 660 !rdev->ops->add_key || 661 !rdev->ops->set_default_key) 662 return -EOPNOTSUPP; 663 664 switch (ext->alg) { 665 case IW_ENCODE_ALG_NONE: 666 remove = true; 667 cipher = 0; 668 break; 669 case IW_ENCODE_ALG_WEP: 670 if (ext->key_len == 5) 671 cipher = WLAN_CIPHER_SUITE_WEP40; 672 else if (ext->key_len == 13) 673 cipher = WLAN_CIPHER_SUITE_WEP104; 674 else 675 return -EINVAL; 676 break; 677 case IW_ENCODE_ALG_TKIP: 678 cipher = WLAN_CIPHER_SUITE_TKIP; 679 break; 680 case IW_ENCODE_ALG_CCMP: 681 cipher = WLAN_CIPHER_SUITE_CCMP; 682 break; 683 case IW_ENCODE_ALG_AES_CMAC: 684 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 685 break; 686 default: 687 return -EOPNOTSUPP; 688 } 689 690 if (erq->flags & IW_ENCODE_DISABLED) 691 remove = true; 692 693 idx = erq->flags & IW_ENCODE_INDEX; 694 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 695 if (idx < 4 || idx > 5) { 696 idx = wdev->wext.default_mgmt_key; 697 if (idx < 0) 698 return -EINVAL; 699 } else 700 idx--; 701 } else { 702 if (idx < 1 || idx > 4) { 703 idx = wdev->wext.default_key; 704 if (idx < 0) 705 return -EINVAL; 706 } else 707 idx--; 708 } 709 710 addr = ext->addr.sa_data; 711 if (is_broadcast_ether_addr(addr)) 712 addr = NULL; 713 714 memset(¶ms, 0, sizeof(params)); 715 params.key = ext->key; 716 params.key_len = ext->key_len; 717 params.cipher = cipher; 718 719 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 720 params.seq = ext->rx_seq; 721 params.seq_len = 6; 722 } 723 724 return cfg80211_set_encryption( 725 rdev, dev, 726 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 727 addr, remove, 728 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 729 idx, ¶ms); 730 } 731 732 static int cfg80211_wext_giwencode(struct net_device *dev, 733 struct iw_request_info *info, 734 struct iw_point *erq, char *keybuf) 735 { 736 struct wireless_dev *wdev = dev->ieee80211_ptr; 737 int idx; 738 739 if (wdev->iftype != NL80211_IFTYPE_STATION && 740 wdev->iftype != NL80211_IFTYPE_ADHOC) 741 return -EOPNOTSUPP; 742 743 idx = erq->flags & IW_ENCODE_INDEX; 744 if (idx == 0) { 745 idx = wdev->wext.default_key; 746 if (idx < 0) 747 idx = 0; 748 } else if (idx < 1 || idx > 4) 749 return -EINVAL; 750 else 751 idx--; 752 753 erq->flags = idx + 1; 754 755 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 756 erq->flags |= IW_ENCODE_DISABLED; 757 erq->length = 0; 758 return 0; 759 } 760 761 erq->length = min_t(size_t, erq->length, 762 wdev->wext.keys->params[idx].key_len); 763 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 764 erq->flags |= IW_ENCODE_ENABLED; 765 766 return 0; 767 } 768 769 static int cfg80211_wext_siwfreq(struct net_device *dev, 770 struct iw_request_info *info, 771 struct iw_freq *wextfreq, char *extra) 772 { 773 struct wireless_dev *wdev = dev->ieee80211_ptr; 774 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 775 struct cfg80211_chan_def chandef = { 776 .width = NL80211_CHAN_WIDTH_20_NOHT, 777 }; 778 int freq, ret; 779 780 wiphy_lock(&rdev->wiphy); 781 782 switch (wdev->iftype) { 783 case NL80211_IFTYPE_STATION: 784 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 785 break; 786 case NL80211_IFTYPE_ADHOC: 787 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 788 break; 789 case NL80211_IFTYPE_MONITOR: 790 freq = cfg80211_wext_freq(wextfreq); 791 if (freq < 0) { 792 ret = freq; 793 break; 794 } 795 if (freq == 0) { 796 ret = -EINVAL; 797 break; 798 } 799 chandef.center_freq1 = freq; 800 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 801 if (!chandef.chan) { 802 ret = -EINVAL; 803 break; 804 } 805 ret = cfg80211_set_monitor_channel(rdev, &chandef); 806 break; 807 case NL80211_IFTYPE_MESH_POINT: 808 freq = cfg80211_wext_freq(wextfreq); 809 if (freq < 0) { 810 ret = freq; 811 break; 812 } 813 if (freq == 0) { 814 ret = -EINVAL; 815 break; 816 } 817 chandef.center_freq1 = freq; 818 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 819 if (!chandef.chan) { 820 ret = -EINVAL; 821 break; 822 } 823 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 824 break; 825 default: 826 ret = -EOPNOTSUPP; 827 break; 828 } 829 830 wiphy_unlock(&rdev->wiphy); 831 832 return ret; 833 } 834 835 static int cfg80211_wext_giwfreq(struct net_device *dev, 836 struct iw_request_info *info, 837 struct iw_freq *freq, char *extra) 838 { 839 struct wireless_dev *wdev = dev->ieee80211_ptr; 840 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 841 struct cfg80211_chan_def chandef = {}; 842 int ret; 843 844 wiphy_lock(&rdev->wiphy); 845 switch (wdev->iftype) { 846 case NL80211_IFTYPE_STATION: 847 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 848 break; 849 case NL80211_IFTYPE_ADHOC: 850 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 851 break; 852 case NL80211_IFTYPE_MONITOR: 853 if (!rdev->ops->get_channel) { 854 ret = -EINVAL; 855 break; 856 } 857 858 ret = rdev_get_channel(rdev, wdev, &chandef); 859 if (ret) 860 break; 861 freq->m = chandef.chan->center_freq; 862 freq->e = 6; 863 ret = 0; 864 break; 865 default: 866 ret = -EINVAL; 867 break; 868 } 869 870 wiphy_unlock(&rdev->wiphy); 871 872 return ret; 873 } 874 875 static int cfg80211_wext_siwtxpower(struct net_device *dev, 876 struct iw_request_info *info, 877 union iwreq_data *data, char *extra) 878 { 879 struct wireless_dev *wdev = dev->ieee80211_ptr; 880 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 881 enum nl80211_tx_power_setting type; 882 int dbm = 0; 883 int ret; 884 885 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 886 return -EINVAL; 887 if (data->txpower.flags & IW_TXPOW_RANGE) 888 return -EINVAL; 889 890 if (!rdev->ops->set_tx_power) 891 return -EOPNOTSUPP; 892 893 /* only change when not disabling */ 894 if (!data->txpower.disabled) { 895 rfkill_set_sw_state(rdev->rfkill, false); 896 897 if (data->txpower.fixed) { 898 /* 899 * wext doesn't support negative values, see 900 * below where it's for automatic 901 */ 902 if (data->txpower.value < 0) 903 return -EINVAL; 904 dbm = data->txpower.value; 905 type = NL80211_TX_POWER_FIXED; 906 /* TODO: do regulatory check! */ 907 } else { 908 /* 909 * Automatic power level setting, max being the value 910 * passed in from userland. 911 */ 912 if (data->txpower.value < 0) { 913 type = NL80211_TX_POWER_AUTOMATIC; 914 } else { 915 dbm = data->txpower.value; 916 type = NL80211_TX_POWER_LIMITED; 917 } 918 } 919 } else { 920 if (rfkill_set_sw_state(rdev->rfkill, true)) 921 schedule_work(&rdev->rfkill_block); 922 return 0; 923 } 924 925 wiphy_lock(&rdev->wiphy); 926 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 927 wiphy_unlock(&rdev->wiphy); 928 929 return ret; 930 } 931 932 static int cfg80211_wext_giwtxpower(struct net_device *dev, 933 struct iw_request_info *info, 934 union iwreq_data *data, char *extra) 935 { 936 struct wireless_dev *wdev = dev->ieee80211_ptr; 937 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 938 int err, val; 939 940 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 941 return -EINVAL; 942 if (data->txpower.flags & IW_TXPOW_RANGE) 943 return -EINVAL; 944 945 if (!rdev->ops->get_tx_power) 946 return -EOPNOTSUPP; 947 948 wiphy_lock(&rdev->wiphy); 949 err = rdev_get_tx_power(rdev, wdev, &val); 950 wiphy_unlock(&rdev->wiphy); 951 if (err) 952 return err; 953 954 /* well... oh well */ 955 data->txpower.fixed = 1; 956 data->txpower.disabled = rfkill_blocked(rdev->rfkill); 957 data->txpower.value = val; 958 data->txpower.flags = IW_TXPOW_DBM; 959 960 return 0; 961 } 962 963 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 964 s32 auth_alg) 965 { 966 int nr_alg = 0; 967 968 if (!auth_alg) 969 return -EINVAL; 970 971 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 972 IW_AUTH_ALG_SHARED_KEY | 973 IW_AUTH_ALG_LEAP)) 974 return -EINVAL; 975 976 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 977 nr_alg++; 978 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 979 } 980 981 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 982 nr_alg++; 983 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 984 } 985 986 if (auth_alg & IW_AUTH_ALG_LEAP) { 987 nr_alg++; 988 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 989 } 990 991 if (nr_alg > 1) 992 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 993 994 return 0; 995 } 996 997 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 998 { 999 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 1000 IW_AUTH_WPA_VERSION_WPA2| 1001 IW_AUTH_WPA_VERSION_DISABLED)) 1002 return -EINVAL; 1003 1004 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 1005 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 1006 IW_AUTH_WPA_VERSION_WPA2))) 1007 return -EINVAL; 1008 1009 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 1010 wdev->wext.connect.crypto.wpa_versions &= 1011 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 1012 1013 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 1014 wdev->wext.connect.crypto.wpa_versions |= 1015 NL80211_WPA_VERSION_1; 1016 1017 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 1018 wdev->wext.connect.crypto.wpa_versions |= 1019 NL80211_WPA_VERSION_2; 1020 1021 return 0; 1022 } 1023 1024 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 1025 { 1026 if (cipher & IW_AUTH_CIPHER_WEP40) 1027 wdev->wext.connect.crypto.cipher_group = 1028 WLAN_CIPHER_SUITE_WEP40; 1029 else if (cipher & IW_AUTH_CIPHER_WEP104) 1030 wdev->wext.connect.crypto.cipher_group = 1031 WLAN_CIPHER_SUITE_WEP104; 1032 else if (cipher & IW_AUTH_CIPHER_TKIP) 1033 wdev->wext.connect.crypto.cipher_group = 1034 WLAN_CIPHER_SUITE_TKIP; 1035 else if (cipher & IW_AUTH_CIPHER_CCMP) 1036 wdev->wext.connect.crypto.cipher_group = 1037 WLAN_CIPHER_SUITE_CCMP; 1038 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1039 wdev->wext.connect.crypto.cipher_group = 1040 WLAN_CIPHER_SUITE_AES_CMAC; 1041 else if (cipher & IW_AUTH_CIPHER_NONE) 1042 wdev->wext.connect.crypto.cipher_group = 0; 1043 else 1044 return -EINVAL; 1045 1046 return 0; 1047 } 1048 1049 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1050 { 1051 int nr_ciphers = 0; 1052 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1053 1054 if (cipher & IW_AUTH_CIPHER_WEP40) { 1055 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1056 nr_ciphers++; 1057 } 1058 1059 if (cipher & IW_AUTH_CIPHER_WEP104) { 1060 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1061 nr_ciphers++; 1062 } 1063 1064 if (cipher & IW_AUTH_CIPHER_TKIP) { 1065 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1066 nr_ciphers++; 1067 } 1068 1069 if (cipher & IW_AUTH_CIPHER_CCMP) { 1070 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1071 nr_ciphers++; 1072 } 1073 1074 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1075 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1076 nr_ciphers++; 1077 } 1078 1079 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1080 1081 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1082 1083 return 0; 1084 } 1085 1086 1087 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1088 { 1089 int nr_akm_suites = 0; 1090 1091 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1092 IW_AUTH_KEY_MGMT_PSK)) 1093 return -EINVAL; 1094 1095 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1096 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1097 WLAN_AKM_SUITE_8021X; 1098 nr_akm_suites++; 1099 } 1100 1101 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1102 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1103 WLAN_AKM_SUITE_PSK; 1104 nr_akm_suites++; 1105 } 1106 1107 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1108 1109 return 0; 1110 } 1111 1112 static int cfg80211_wext_siwauth(struct net_device *dev, 1113 struct iw_request_info *info, 1114 struct iw_param *data, char *extra) 1115 { 1116 struct wireless_dev *wdev = dev->ieee80211_ptr; 1117 1118 if (wdev->iftype != NL80211_IFTYPE_STATION) 1119 return -EOPNOTSUPP; 1120 1121 switch (data->flags & IW_AUTH_INDEX) { 1122 case IW_AUTH_PRIVACY_INVOKED: 1123 wdev->wext.connect.privacy = data->value; 1124 return 0; 1125 case IW_AUTH_WPA_VERSION: 1126 return cfg80211_set_wpa_version(wdev, data->value); 1127 case IW_AUTH_CIPHER_GROUP: 1128 return cfg80211_set_cipher_group(wdev, data->value); 1129 case IW_AUTH_KEY_MGMT: 1130 return cfg80211_set_key_mgt(wdev, data->value); 1131 case IW_AUTH_CIPHER_PAIRWISE: 1132 return cfg80211_set_cipher_pairwise(wdev, data->value); 1133 case IW_AUTH_80211_AUTH_ALG: 1134 return cfg80211_set_auth_alg(wdev, data->value); 1135 case IW_AUTH_WPA_ENABLED: 1136 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1137 case IW_AUTH_DROP_UNENCRYPTED: 1138 case IW_AUTH_MFP: 1139 return 0; 1140 default: 1141 return -EOPNOTSUPP; 1142 } 1143 } 1144 1145 static int cfg80211_wext_giwauth(struct net_device *dev, 1146 struct iw_request_info *info, 1147 struct iw_param *data, char *extra) 1148 { 1149 /* XXX: what do we need? */ 1150 1151 return -EOPNOTSUPP; 1152 } 1153 1154 static int cfg80211_wext_siwpower(struct net_device *dev, 1155 struct iw_request_info *info, 1156 struct iw_param *wrq, char *extra) 1157 { 1158 struct wireless_dev *wdev = dev->ieee80211_ptr; 1159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1160 bool ps = wdev->ps; 1161 int timeout = wdev->ps_timeout; 1162 int err; 1163 1164 if (wdev->iftype != NL80211_IFTYPE_STATION) 1165 return -EINVAL; 1166 1167 if (!rdev->ops->set_power_mgmt) 1168 return -EOPNOTSUPP; 1169 1170 if (wrq->disabled) { 1171 ps = false; 1172 } else { 1173 switch (wrq->flags & IW_POWER_MODE) { 1174 case IW_POWER_ON: /* If not specified */ 1175 case IW_POWER_MODE: /* If set all mask */ 1176 case IW_POWER_ALL_R: /* If explicitely state all */ 1177 ps = true; 1178 break; 1179 default: /* Otherwise we ignore */ 1180 return -EINVAL; 1181 } 1182 1183 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1184 return -EINVAL; 1185 1186 if (wrq->flags & IW_POWER_TIMEOUT) 1187 timeout = wrq->value / 1000; 1188 } 1189 1190 wiphy_lock(&rdev->wiphy); 1191 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1192 wiphy_unlock(&rdev->wiphy); 1193 if (err) 1194 return err; 1195 1196 wdev->ps = ps; 1197 wdev->ps_timeout = timeout; 1198 1199 return 0; 1200 1201 } 1202 1203 static int cfg80211_wext_giwpower(struct net_device *dev, 1204 struct iw_request_info *info, 1205 struct iw_param *wrq, char *extra) 1206 { 1207 struct wireless_dev *wdev = dev->ieee80211_ptr; 1208 1209 wrq->disabled = !wdev->ps; 1210 1211 return 0; 1212 } 1213 1214 static int cfg80211_wext_siwrate(struct net_device *dev, 1215 struct iw_request_info *info, 1216 struct iw_param *rate, char *extra) 1217 { 1218 struct wireless_dev *wdev = dev->ieee80211_ptr; 1219 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1220 struct cfg80211_bitrate_mask mask; 1221 u32 fixed, maxrate; 1222 struct ieee80211_supported_band *sband; 1223 int band, ridx, ret; 1224 bool match = false; 1225 1226 if (!rdev->ops->set_bitrate_mask) 1227 return -EOPNOTSUPP; 1228 1229 memset(&mask, 0, sizeof(mask)); 1230 fixed = 0; 1231 maxrate = (u32)-1; 1232 1233 if (rate->value < 0) { 1234 /* nothing */ 1235 } else if (rate->fixed) { 1236 fixed = rate->value / 100000; 1237 } else { 1238 maxrate = rate->value / 100000; 1239 } 1240 1241 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1242 sband = wdev->wiphy->bands[band]; 1243 if (sband == NULL) 1244 continue; 1245 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1246 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1247 if (fixed == srate->bitrate) { 1248 mask.control[band].legacy = 1 << ridx; 1249 match = true; 1250 break; 1251 } 1252 if (srate->bitrate <= maxrate) { 1253 mask.control[band].legacy |= 1 << ridx; 1254 match = true; 1255 } 1256 } 1257 } 1258 1259 if (!match) 1260 return -EINVAL; 1261 1262 wiphy_lock(&rdev->wiphy); 1263 ret = rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 1264 wiphy_unlock(&rdev->wiphy); 1265 1266 return ret; 1267 } 1268 1269 static int cfg80211_wext_giwrate(struct net_device *dev, 1270 struct iw_request_info *info, 1271 struct iw_param *rate, char *extra) 1272 { 1273 struct wireless_dev *wdev = dev->ieee80211_ptr; 1274 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1275 struct station_info sinfo = {}; 1276 u8 addr[ETH_ALEN]; 1277 int err; 1278 1279 if (wdev->iftype != NL80211_IFTYPE_STATION) 1280 return -EOPNOTSUPP; 1281 1282 if (!rdev->ops->get_station) 1283 return -EOPNOTSUPP; 1284 1285 err = 0; 1286 wdev_lock(wdev); 1287 if (wdev->current_bss) 1288 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN); 1289 else 1290 err = -EOPNOTSUPP; 1291 wdev_unlock(wdev); 1292 if (err) 1293 return err; 1294 1295 wiphy_lock(&rdev->wiphy); 1296 err = rdev_get_station(rdev, dev, addr, &sinfo); 1297 wiphy_unlock(&rdev->wiphy); 1298 if (err) 1299 return err; 1300 1301 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1302 err = -EOPNOTSUPP; 1303 goto free; 1304 } 1305 1306 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1307 1308 free: 1309 cfg80211_sinfo_release_content(&sinfo); 1310 return err; 1311 } 1312 1313 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1314 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1315 { 1316 struct wireless_dev *wdev = dev->ieee80211_ptr; 1317 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1318 /* we are under RTNL - globally locked - so can use static structs */ 1319 static struct iw_statistics wstats; 1320 static struct station_info sinfo = {}; 1321 u8 bssid[ETH_ALEN]; 1322 int ret; 1323 1324 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1325 return NULL; 1326 1327 if (!rdev->ops->get_station) 1328 return NULL; 1329 1330 /* Grab BSSID of current BSS, if any */ 1331 wdev_lock(wdev); 1332 if (!wdev->current_bss) { 1333 wdev_unlock(wdev); 1334 return NULL; 1335 } 1336 memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); 1337 wdev_unlock(wdev); 1338 1339 memset(&sinfo, 0, sizeof(sinfo)); 1340 1341 wiphy_lock(&rdev->wiphy); 1342 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1343 wiphy_unlock(&rdev->wiphy); 1344 1345 if (ret) 1346 return NULL; 1347 1348 memset(&wstats, 0, sizeof(wstats)); 1349 1350 switch (rdev->wiphy.signal_type) { 1351 case CFG80211_SIGNAL_TYPE_MBM: 1352 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1353 int sig = sinfo.signal; 1354 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1355 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1356 wstats.qual.updated |= IW_QUAL_DBM; 1357 wstats.qual.level = sig; 1358 if (sig < -110) 1359 sig = -110; 1360 else if (sig > -40) 1361 sig = -40; 1362 wstats.qual.qual = sig + 110; 1363 break; 1364 } 1365 fallthrough; 1366 case CFG80211_SIGNAL_TYPE_UNSPEC: 1367 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1368 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1369 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1370 wstats.qual.level = sinfo.signal; 1371 wstats.qual.qual = sinfo.signal; 1372 break; 1373 } 1374 fallthrough; 1375 default: 1376 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1377 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1378 } 1379 1380 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1381 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1382 wstats.discard.misc = sinfo.rx_dropped_misc; 1383 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1384 wstats.discard.retries = sinfo.tx_failed; 1385 1386 cfg80211_sinfo_release_content(&sinfo); 1387 1388 return &wstats; 1389 } 1390 1391 static int cfg80211_wext_siwap(struct net_device *dev, 1392 struct iw_request_info *info, 1393 struct sockaddr *ap_addr, char *extra) 1394 { 1395 struct wireless_dev *wdev = dev->ieee80211_ptr; 1396 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1397 int ret; 1398 1399 wiphy_lock(&rdev->wiphy); 1400 switch (wdev->iftype) { 1401 case NL80211_IFTYPE_ADHOC: 1402 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1403 break; 1404 case NL80211_IFTYPE_STATION: 1405 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1406 break; 1407 default: 1408 ret = -EOPNOTSUPP; 1409 break; 1410 } 1411 wiphy_unlock(&rdev->wiphy); 1412 1413 return ret; 1414 } 1415 1416 static int cfg80211_wext_giwap(struct net_device *dev, 1417 struct iw_request_info *info, 1418 struct sockaddr *ap_addr, char *extra) 1419 { 1420 struct wireless_dev *wdev = dev->ieee80211_ptr; 1421 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1422 int ret; 1423 1424 wiphy_lock(&rdev->wiphy); 1425 switch (wdev->iftype) { 1426 case NL80211_IFTYPE_ADHOC: 1427 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1428 break; 1429 case NL80211_IFTYPE_STATION: 1430 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1431 break; 1432 default: 1433 ret = -EOPNOTSUPP; 1434 break; 1435 } 1436 wiphy_unlock(&rdev->wiphy); 1437 1438 return ret; 1439 } 1440 1441 static int cfg80211_wext_siwessid(struct net_device *dev, 1442 struct iw_request_info *info, 1443 struct iw_point *data, char *ssid) 1444 { 1445 struct wireless_dev *wdev = dev->ieee80211_ptr; 1446 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1447 int ret; 1448 1449 wiphy_lock(&rdev->wiphy); 1450 switch (wdev->iftype) { 1451 case NL80211_IFTYPE_ADHOC: 1452 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1453 break; 1454 case NL80211_IFTYPE_STATION: 1455 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1456 break; 1457 default: 1458 ret = -EOPNOTSUPP; 1459 break; 1460 } 1461 wiphy_unlock(&rdev->wiphy); 1462 1463 return ret; 1464 } 1465 1466 static int cfg80211_wext_giwessid(struct net_device *dev, 1467 struct iw_request_info *info, 1468 struct iw_point *data, char *ssid) 1469 { 1470 struct wireless_dev *wdev = dev->ieee80211_ptr; 1471 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1472 int ret; 1473 1474 data->flags = 0; 1475 data->length = 0; 1476 1477 wiphy_lock(&rdev->wiphy); 1478 switch (wdev->iftype) { 1479 case NL80211_IFTYPE_ADHOC: 1480 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1481 break; 1482 case NL80211_IFTYPE_STATION: 1483 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1484 break; 1485 default: 1486 ret = -EOPNOTSUPP; 1487 break; 1488 } 1489 wiphy_unlock(&rdev->wiphy); 1490 1491 return ret; 1492 } 1493 1494 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1495 struct iw_request_info *info, 1496 struct iw_point *data, char *extra) 1497 { 1498 struct wireless_dev *wdev = dev->ieee80211_ptr; 1499 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1500 struct cfg80211_pmksa cfg_pmksa; 1501 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1502 int ret; 1503 1504 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1505 1506 if (wdev->iftype != NL80211_IFTYPE_STATION) 1507 return -EINVAL; 1508 1509 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1510 cfg_pmksa.pmkid = pmksa->pmkid; 1511 1512 wiphy_lock(&rdev->wiphy); 1513 switch (pmksa->cmd) { 1514 case IW_PMKSA_ADD: 1515 if (!rdev->ops->set_pmksa) { 1516 ret = -EOPNOTSUPP; 1517 break; 1518 } 1519 1520 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1521 break; 1522 case IW_PMKSA_REMOVE: 1523 if (!rdev->ops->del_pmksa) { 1524 ret = -EOPNOTSUPP; 1525 break; 1526 } 1527 1528 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1529 break; 1530 case IW_PMKSA_FLUSH: 1531 if (!rdev->ops->flush_pmksa) { 1532 ret = -EOPNOTSUPP; 1533 break; 1534 } 1535 1536 ret = rdev_flush_pmksa(rdev, dev); 1537 break; 1538 default: 1539 ret = -EOPNOTSUPP; 1540 break; 1541 } 1542 wiphy_unlock(&rdev->wiphy); 1543 1544 return ret; 1545 } 1546 1547 #define DEFINE_WEXT_COMPAT_STUB(func, type) \ 1548 static int __ ## func(struct net_device *dev, \ 1549 struct iw_request_info *info, \ 1550 union iwreq_data *wrqu, \ 1551 char *extra) \ 1552 { \ 1553 return func(dev, info, (type *)wrqu, extra); \ 1554 } 1555 1556 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char) 1557 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq) 1558 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq) 1559 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32) 1560 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32) 1561 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point) 1562 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr) 1563 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr) 1564 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point) 1565 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point) 1566 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point) 1567 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point) 1568 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param) 1569 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param) 1570 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param) 1571 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param) 1572 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param) 1573 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param) 1574 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param) 1575 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param) 1576 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point) 1577 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point) 1578 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param) 1579 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param) 1580 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point) 1581 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param) 1582 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param) 1583 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point) 1584 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point) 1585 1586 static const iw_handler cfg80211_handlers[] = { 1587 [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname, 1588 [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq, 1589 [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq, 1590 [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode, 1591 [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode, 1592 [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange, 1593 [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap, 1594 [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap, 1595 [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme, 1596 [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan, 1597 [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan, 1598 [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid, 1599 [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid, 1600 [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate, 1601 [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate, 1602 [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts, 1603 [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts, 1604 [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag, 1605 [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag, 1606 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower, 1607 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower, 1608 [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry, 1609 [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry, 1610 [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode, 1611 [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode, 1612 [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower, 1613 [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower, 1614 [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie, 1615 [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth, 1616 [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth, 1617 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext, 1618 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa, 1619 }; 1620 1621 const struct iw_handler_def cfg80211_wext_handler = { 1622 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1623 .standard = cfg80211_handlers, 1624 .get_wireless_stats = cfg80211_wireless_stats, 1625 }; 1626