1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * cfg80211 - wext compat code 4 * 5 * This is temporary code until all wireless functionality is migrated 6 * into cfg80211, when that happens all the exports here go away and 7 * we directly assign the wireless handlers of wireless interfaces. 8 * 9 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net> 10 * Copyright (C) 2019-2022 Intel Corporation 11 */ 12 13 #include <linux/export.h> 14 #include <linux/wireless.h> 15 #include <linux/nl80211.h> 16 #include <linux/if_arp.h> 17 #include <linux/etherdevice.h> 18 #include <linux/slab.h> 19 #include <net/iw_handler.h> 20 #include <net/cfg80211.h> 21 #include <net/cfg80211-wext.h> 22 #include "wext-compat.h" 23 #include "core.h" 24 #include "rdev-ops.h" 25 26 int cfg80211_wext_giwname(struct net_device *dev, 27 struct iw_request_info *info, 28 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 (wdev->valid_links) 419 return -EINVAL; 420 421 if (pairwise && !addr) 422 return -EINVAL; 423 424 /* 425 * In many cases we won't actually need this, but it's better 426 * to do it first in case the allocation fails. Don't use wext. 427 */ 428 if (!wdev->wext.keys) { 429 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys), 430 GFP_KERNEL); 431 if (!wdev->wext.keys) 432 return -ENOMEM; 433 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) 434 wdev->wext.keys->params[i].key = 435 wdev->wext.keys->data[i]; 436 } 437 438 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 439 wdev->iftype != NL80211_IFTYPE_STATION) 440 return -EOPNOTSUPP; 441 442 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 443 if (!wdev->connected) 444 return -ENOLINK; 445 446 if (!rdev->ops->set_default_mgmt_key) 447 return -EOPNOTSUPP; 448 449 if (idx < 4 || idx > 5) 450 return -EINVAL; 451 } else if (idx < 0 || idx > 3) 452 return -EINVAL; 453 454 if (remove) { 455 err = 0; 456 if (wdev->connected || 457 (wdev->iftype == NL80211_IFTYPE_ADHOC && 458 wdev->u.ibss.current_bss)) { 459 /* 460 * If removing the current TX key, we will need to 461 * join a new IBSS without the privacy bit clear. 462 */ 463 if (idx == wdev->wext.default_key && 464 wdev->iftype == NL80211_IFTYPE_ADHOC) { 465 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 466 rejoin = true; 467 } 468 469 if (!pairwise && addr && 470 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 471 err = -ENOENT; 472 else 473 err = rdev_del_key(rdev, dev, -1, idx, pairwise, 474 addr); 475 } 476 wdev->wext.connect.privacy = false; 477 /* 478 * Applications using wireless extensions expect to be 479 * able to delete keys that don't exist, so allow that. 480 */ 481 if (err == -ENOENT) 482 err = 0; 483 if (!err) { 484 if (!addr && idx < 4) { 485 memset(wdev->wext.keys->data[idx], 0, 486 sizeof(wdev->wext.keys->data[idx])); 487 wdev->wext.keys->params[idx].key_len = 0; 488 wdev->wext.keys->params[idx].cipher = 0; 489 } 490 if (idx == wdev->wext.default_key) 491 wdev->wext.default_key = -1; 492 else if (idx == wdev->wext.default_mgmt_key) 493 wdev->wext.default_mgmt_key = -1; 494 } 495 496 if (!err && rejoin) 497 err = cfg80211_ibss_wext_join(rdev, wdev); 498 499 return err; 500 } 501 502 if (addr) 503 tx_key = false; 504 505 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) 506 return -EINVAL; 507 508 err = 0; 509 if (wdev->connected || 510 (wdev->iftype == NL80211_IFTYPE_ADHOC && 511 wdev->u.ibss.current_bss)) 512 err = rdev_add_key(rdev, dev, -1, idx, pairwise, addr, params); 513 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 514 params->cipher != WLAN_CIPHER_SUITE_WEP104) 515 return -EINVAL; 516 if (err) 517 return err; 518 519 /* 520 * We only need to store WEP keys, since they're the only keys that 521 * can be set before a connection is established and persist after 522 * disconnecting. 523 */ 524 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 525 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 526 wdev->wext.keys->params[idx] = *params; 527 memcpy(wdev->wext.keys->data[idx], 528 params->key, params->key_len); 529 wdev->wext.keys->params[idx].key = 530 wdev->wext.keys->data[idx]; 531 } 532 533 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 534 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 535 (tx_key || (!addr && wdev->wext.default_key == -1))) { 536 if (wdev->connected || 537 (wdev->iftype == NL80211_IFTYPE_ADHOC && 538 wdev->u.ibss.current_bss)) { 539 /* 540 * If we are getting a new TX key from not having 541 * had one before we need to join a new IBSS with 542 * the privacy bit set. 543 */ 544 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 545 wdev->wext.default_key == -1) { 546 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 547 rejoin = true; 548 } 549 err = rdev_set_default_key(rdev, dev, -1, idx, true, 550 true); 551 } 552 if (!err) { 553 wdev->wext.default_key = idx; 554 if (rejoin) 555 err = cfg80211_ibss_wext_join(rdev, wdev); 556 } 557 return err; 558 } 559 560 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 561 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 562 if (wdev->connected || 563 (wdev->iftype == NL80211_IFTYPE_ADHOC && 564 wdev->u.ibss.current_bss)) 565 err = rdev_set_default_mgmt_key(rdev, dev, -1, idx); 566 if (!err) 567 wdev->wext.default_mgmt_key = idx; 568 return err; 569 } 570 571 return 0; 572 } 573 574 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 575 struct net_device *dev, bool pairwise, 576 const u8 *addr, bool remove, bool tx_key, 577 int idx, struct key_params *params) 578 { 579 int err; 580 581 wdev_lock(dev->ieee80211_ptr); 582 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr, 583 remove, tx_key, idx, params); 584 wdev_unlock(dev->ieee80211_ptr); 585 586 return err; 587 } 588 589 static int cfg80211_wext_siwencode(struct net_device *dev, 590 struct iw_request_info *info, 591 struct iw_point *erq, char *keybuf) 592 { 593 struct wireless_dev *wdev = dev->ieee80211_ptr; 594 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 595 int idx, err; 596 bool remove = false; 597 struct key_params params; 598 599 if (wdev->iftype != NL80211_IFTYPE_STATION && 600 wdev->iftype != NL80211_IFTYPE_ADHOC) 601 return -EOPNOTSUPP; 602 603 /* no use -- only MFP (set_default_mgmt_key) is optional */ 604 if (!rdev->ops->del_key || 605 !rdev->ops->add_key || 606 !rdev->ops->set_default_key) 607 return -EOPNOTSUPP; 608 609 wiphy_lock(&rdev->wiphy); 610 if (wdev->valid_links) { 611 err = -EOPNOTSUPP; 612 goto out; 613 } 614 615 idx = erq->flags & IW_ENCODE_INDEX; 616 if (idx == 0) { 617 idx = wdev->wext.default_key; 618 if (idx < 0) 619 idx = 0; 620 } else if (idx < 1 || idx > 4) { 621 err = -EINVAL; 622 goto out; 623 } else { 624 idx--; 625 } 626 627 if (erq->flags & IW_ENCODE_DISABLED) 628 remove = true; 629 else if (erq->length == 0) { 630 /* No key data - just set the default TX key index */ 631 err = 0; 632 wdev_lock(wdev); 633 if (wdev->connected || 634 (wdev->iftype == NL80211_IFTYPE_ADHOC && 635 wdev->u.ibss.current_bss)) 636 err = rdev_set_default_key(rdev, dev, -1, idx, true, 637 true); 638 if (!err) 639 wdev->wext.default_key = idx; 640 wdev_unlock(wdev); 641 goto out; 642 } 643 644 memset(¶ms, 0, sizeof(params)); 645 params.key = keybuf; 646 params.key_len = erq->length; 647 if (erq->length == 5) { 648 params.cipher = WLAN_CIPHER_SUITE_WEP40; 649 } else if (erq->length == 13) { 650 params.cipher = WLAN_CIPHER_SUITE_WEP104; 651 } else if (!remove) { 652 err = -EINVAL; 653 goto out; 654 } 655 656 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove, 657 wdev->wext.default_key == -1, 658 idx, ¶ms); 659 out: 660 wiphy_unlock(&rdev->wiphy); 661 662 return err; 663 } 664 665 static int cfg80211_wext_siwencodeext(struct net_device *dev, 666 struct iw_request_info *info, 667 struct iw_point *erq, char *extra) 668 { 669 struct wireless_dev *wdev = dev->ieee80211_ptr; 670 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 671 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 672 const u8 *addr; 673 int idx; 674 bool remove = false; 675 struct key_params params; 676 u32 cipher; 677 int ret; 678 679 if (wdev->iftype != NL80211_IFTYPE_STATION && 680 wdev->iftype != NL80211_IFTYPE_ADHOC) 681 return -EOPNOTSUPP; 682 683 /* no use -- only MFP (set_default_mgmt_key) is optional */ 684 if (!rdev->ops->del_key || 685 !rdev->ops->add_key || 686 !rdev->ops->set_default_key) 687 return -EOPNOTSUPP; 688 689 wdev_lock(wdev); 690 if (wdev->valid_links) { 691 wdev_unlock(wdev); 692 return -EOPNOTSUPP; 693 } 694 wdev_unlock(wdev); 695 696 switch (ext->alg) { 697 case IW_ENCODE_ALG_NONE: 698 remove = true; 699 cipher = 0; 700 break; 701 case IW_ENCODE_ALG_WEP: 702 if (ext->key_len == 5) 703 cipher = WLAN_CIPHER_SUITE_WEP40; 704 else if (ext->key_len == 13) 705 cipher = WLAN_CIPHER_SUITE_WEP104; 706 else 707 return -EINVAL; 708 break; 709 case IW_ENCODE_ALG_TKIP: 710 cipher = WLAN_CIPHER_SUITE_TKIP; 711 break; 712 case IW_ENCODE_ALG_CCMP: 713 cipher = WLAN_CIPHER_SUITE_CCMP; 714 break; 715 case IW_ENCODE_ALG_AES_CMAC: 716 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 717 break; 718 default: 719 return -EOPNOTSUPP; 720 } 721 722 if (erq->flags & IW_ENCODE_DISABLED) 723 remove = true; 724 725 idx = erq->flags & IW_ENCODE_INDEX; 726 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 727 if (idx < 4 || idx > 5) { 728 idx = wdev->wext.default_mgmt_key; 729 if (idx < 0) 730 return -EINVAL; 731 } else 732 idx--; 733 } else { 734 if (idx < 1 || idx > 4) { 735 idx = wdev->wext.default_key; 736 if (idx < 0) 737 return -EINVAL; 738 } else 739 idx--; 740 } 741 742 addr = ext->addr.sa_data; 743 if (is_broadcast_ether_addr(addr)) 744 addr = NULL; 745 746 memset(¶ms, 0, sizeof(params)); 747 params.key = ext->key; 748 params.key_len = ext->key_len; 749 params.cipher = cipher; 750 751 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 752 params.seq = ext->rx_seq; 753 params.seq_len = 6; 754 } 755 756 wiphy_lock(wdev->wiphy); 757 ret = cfg80211_set_encryption( 758 rdev, dev, 759 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 760 addr, remove, 761 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 762 idx, ¶ms); 763 wiphy_unlock(wdev->wiphy); 764 765 return ret; 766 } 767 768 static int cfg80211_wext_giwencode(struct net_device *dev, 769 struct iw_request_info *info, 770 struct iw_point *erq, char *keybuf) 771 { 772 struct wireless_dev *wdev = dev->ieee80211_ptr; 773 int idx; 774 775 if (wdev->iftype != NL80211_IFTYPE_STATION && 776 wdev->iftype != NL80211_IFTYPE_ADHOC) 777 return -EOPNOTSUPP; 778 779 idx = erq->flags & IW_ENCODE_INDEX; 780 if (idx == 0) { 781 idx = wdev->wext.default_key; 782 if (idx < 0) 783 idx = 0; 784 } else if (idx < 1 || idx > 4) 785 return -EINVAL; 786 else 787 idx--; 788 789 erq->flags = idx + 1; 790 791 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 792 erq->flags |= IW_ENCODE_DISABLED; 793 erq->length = 0; 794 return 0; 795 } 796 797 erq->length = min_t(size_t, erq->length, 798 wdev->wext.keys->params[idx].key_len); 799 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 800 erq->flags |= IW_ENCODE_ENABLED; 801 802 return 0; 803 } 804 805 static int cfg80211_wext_siwfreq(struct net_device *dev, 806 struct iw_request_info *info, 807 struct iw_freq *wextfreq, char *extra) 808 { 809 struct wireless_dev *wdev = dev->ieee80211_ptr; 810 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 811 struct cfg80211_chan_def chandef = { 812 .width = NL80211_CHAN_WIDTH_20_NOHT, 813 }; 814 int freq, ret; 815 816 wiphy_lock(&rdev->wiphy); 817 818 switch (wdev->iftype) { 819 case NL80211_IFTYPE_STATION: 820 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 821 break; 822 case NL80211_IFTYPE_ADHOC: 823 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 824 break; 825 case NL80211_IFTYPE_MONITOR: 826 freq = cfg80211_wext_freq(wextfreq); 827 if (freq < 0) { 828 ret = freq; 829 break; 830 } 831 if (freq == 0) { 832 ret = -EINVAL; 833 break; 834 } 835 chandef.center_freq1 = freq; 836 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 837 if (!chandef.chan) { 838 ret = -EINVAL; 839 break; 840 } 841 ret = cfg80211_set_monitor_channel(rdev, &chandef); 842 break; 843 case NL80211_IFTYPE_MESH_POINT: 844 freq = cfg80211_wext_freq(wextfreq); 845 if (freq < 0) { 846 ret = freq; 847 break; 848 } 849 if (freq == 0) { 850 ret = -EINVAL; 851 break; 852 } 853 chandef.center_freq1 = freq; 854 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 855 if (!chandef.chan) { 856 ret = -EINVAL; 857 break; 858 } 859 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 860 break; 861 default: 862 ret = -EOPNOTSUPP; 863 break; 864 } 865 866 wiphy_unlock(&rdev->wiphy); 867 868 return ret; 869 } 870 871 static int cfg80211_wext_giwfreq(struct net_device *dev, 872 struct iw_request_info *info, 873 struct iw_freq *freq, char *extra) 874 { 875 struct wireless_dev *wdev = dev->ieee80211_ptr; 876 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 877 struct cfg80211_chan_def chandef = {}; 878 int ret; 879 880 wiphy_lock(&rdev->wiphy); 881 switch (wdev->iftype) { 882 case NL80211_IFTYPE_STATION: 883 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 884 break; 885 case NL80211_IFTYPE_ADHOC: 886 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 887 break; 888 case NL80211_IFTYPE_MONITOR: 889 if (!rdev->ops->get_channel) { 890 ret = -EINVAL; 891 break; 892 } 893 894 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 895 if (ret) 896 break; 897 freq->m = chandef.chan->center_freq; 898 freq->e = 6; 899 ret = 0; 900 break; 901 default: 902 ret = -EINVAL; 903 break; 904 } 905 906 wiphy_unlock(&rdev->wiphy); 907 908 return ret; 909 } 910 911 static int cfg80211_wext_siwtxpower(struct net_device *dev, 912 struct iw_request_info *info, 913 union iwreq_data *data, char *extra) 914 { 915 struct wireless_dev *wdev = dev->ieee80211_ptr; 916 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 917 enum nl80211_tx_power_setting type; 918 int dbm = 0; 919 int ret; 920 921 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 922 return -EINVAL; 923 if (data->txpower.flags & IW_TXPOW_RANGE) 924 return -EINVAL; 925 926 if (!rdev->ops->set_tx_power) 927 return -EOPNOTSUPP; 928 929 /* only change when not disabling */ 930 if (!data->txpower.disabled) { 931 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 932 933 if (data->txpower.fixed) { 934 /* 935 * wext doesn't support negative values, see 936 * below where it's for automatic 937 */ 938 if (data->txpower.value < 0) 939 return -EINVAL; 940 dbm = data->txpower.value; 941 type = NL80211_TX_POWER_FIXED; 942 /* TODO: do regulatory check! */ 943 } else { 944 /* 945 * Automatic power level setting, max being the value 946 * passed in from userland. 947 */ 948 if (data->txpower.value < 0) { 949 type = NL80211_TX_POWER_AUTOMATIC; 950 } else { 951 dbm = data->txpower.value; 952 type = NL80211_TX_POWER_LIMITED; 953 } 954 } 955 } else { 956 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 957 schedule_work(&rdev->rfkill_block); 958 return 0; 959 } 960 961 wiphy_lock(&rdev->wiphy); 962 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 963 wiphy_unlock(&rdev->wiphy); 964 965 return ret; 966 } 967 968 static int cfg80211_wext_giwtxpower(struct net_device *dev, 969 struct iw_request_info *info, 970 union iwreq_data *data, char *extra) 971 { 972 struct wireless_dev *wdev = dev->ieee80211_ptr; 973 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 974 int err, val; 975 976 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 977 return -EINVAL; 978 if (data->txpower.flags & IW_TXPOW_RANGE) 979 return -EINVAL; 980 981 if (!rdev->ops->get_tx_power) 982 return -EOPNOTSUPP; 983 984 wiphy_lock(&rdev->wiphy); 985 err = rdev_get_tx_power(rdev, wdev, &val); 986 wiphy_unlock(&rdev->wiphy); 987 if (err) 988 return err; 989 990 /* well... oh well */ 991 data->txpower.fixed = 1; 992 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 993 data->txpower.value = val; 994 data->txpower.flags = IW_TXPOW_DBM; 995 996 return 0; 997 } 998 999 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 1000 s32 auth_alg) 1001 { 1002 int nr_alg = 0; 1003 1004 if (!auth_alg) 1005 return -EINVAL; 1006 1007 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 1008 IW_AUTH_ALG_SHARED_KEY | 1009 IW_AUTH_ALG_LEAP)) 1010 return -EINVAL; 1011 1012 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 1013 nr_alg++; 1014 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 1015 } 1016 1017 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 1018 nr_alg++; 1019 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 1020 } 1021 1022 if (auth_alg & IW_AUTH_ALG_LEAP) { 1023 nr_alg++; 1024 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 1025 } 1026 1027 if (nr_alg > 1) 1028 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 1029 1030 return 0; 1031 } 1032 1033 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 1034 { 1035 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 1036 IW_AUTH_WPA_VERSION_WPA2| 1037 IW_AUTH_WPA_VERSION_DISABLED)) 1038 return -EINVAL; 1039 1040 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 1041 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 1042 IW_AUTH_WPA_VERSION_WPA2))) 1043 return -EINVAL; 1044 1045 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 1046 wdev->wext.connect.crypto.wpa_versions &= 1047 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 1048 1049 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 1050 wdev->wext.connect.crypto.wpa_versions |= 1051 NL80211_WPA_VERSION_1; 1052 1053 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 1054 wdev->wext.connect.crypto.wpa_versions |= 1055 NL80211_WPA_VERSION_2; 1056 1057 return 0; 1058 } 1059 1060 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 1061 { 1062 if (cipher & IW_AUTH_CIPHER_WEP40) 1063 wdev->wext.connect.crypto.cipher_group = 1064 WLAN_CIPHER_SUITE_WEP40; 1065 else if (cipher & IW_AUTH_CIPHER_WEP104) 1066 wdev->wext.connect.crypto.cipher_group = 1067 WLAN_CIPHER_SUITE_WEP104; 1068 else if (cipher & IW_AUTH_CIPHER_TKIP) 1069 wdev->wext.connect.crypto.cipher_group = 1070 WLAN_CIPHER_SUITE_TKIP; 1071 else if (cipher & IW_AUTH_CIPHER_CCMP) 1072 wdev->wext.connect.crypto.cipher_group = 1073 WLAN_CIPHER_SUITE_CCMP; 1074 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1075 wdev->wext.connect.crypto.cipher_group = 1076 WLAN_CIPHER_SUITE_AES_CMAC; 1077 else if (cipher & IW_AUTH_CIPHER_NONE) 1078 wdev->wext.connect.crypto.cipher_group = 0; 1079 else 1080 return -EINVAL; 1081 1082 return 0; 1083 } 1084 1085 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1086 { 1087 int nr_ciphers = 0; 1088 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1089 1090 if (cipher & IW_AUTH_CIPHER_WEP40) { 1091 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1092 nr_ciphers++; 1093 } 1094 1095 if (cipher & IW_AUTH_CIPHER_WEP104) { 1096 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1097 nr_ciphers++; 1098 } 1099 1100 if (cipher & IW_AUTH_CIPHER_TKIP) { 1101 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1102 nr_ciphers++; 1103 } 1104 1105 if (cipher & IW_AUTH_CIPHER_CCMP) { 1106 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1107 nr_ciphers++; 1108 } 1109 1110 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1111 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1112 nr_ciphers++; 1113 } 1114 1115 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1116 1117 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1118 1119 return 0; 1120 } 1121 1122 1123 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1124 { 1125 int nr_akm_suites = 0; 1126 1127 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1128 IW_AUTH_KEY_MGMT_PSK)) 1129 return -EINVAL; 1130 1131 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1132 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1133 WLAN_AKM_SUITE_8021X; 1134 nr_akm_suites++; 1135 } 1136 1137 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1138 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1139 WLAN_AKM_SUITE_PSK; 1140 nr_akm_suites++; 1141 } 1142 1143 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1144 1145 return 0; 1146 } 1147 1148 static int cfg80211_wext_siwauth(struct net_device *dev, 1149 struct iw_request_info *info, 1150 struct iw_param *data, char *extra) 1151 { 1152 struct wireless_dev *wdev = dev->ieee80211_ptr; 1153 1154 if (wdev->iftype != NL80211_IFTYPE_STATION) 1155 return -EOPNOTSUPP; 1156 1157 switch (data->flags & IW_AUTH_INDEX) { 1158 case IW_AUTH_PRIVACY_INVOKED: 1159 wdev->wext.connect.privacy = data->value; 1160 return 0; 1161 case IW_AUTH_WPA_VERSION: 1162 return cfg80211_set_wpa_version(wdev, data->value); 1163 case IW_AUTH_CIPHER_GROUP: 1164 return cfg80211_set_cipher_group(wdev, data->value); 1165 case IW_AUTH_KEY_MGMT: 1166 return cfg80211_set_key_mgt(wdev, data->value); 1167 case IW_AUTH_CIPHER_PAIRWISE: 1168 return cfg80211_set_cipher_pairwise(wdev, data->value); 1169 case IW_AUTH_80211_AUTH_ALG: 1170 return cfg80211_set_auth_alg(wdev, data->value); 1171 case IW_AUTH_WPA_ENABLED: 1172 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1173 case IW_AUTH_DROP_UNENCRYPTED: 1174 case IW_AUTH_MFP: 1175 return 0; 1176 default: 1177 return -EOPNOTSUPP; 1178 } 1179 } 1180 1181 static int cfg80211_wext_giwauth(struct net_device *dev, 1182 struct iw_request_info *info, 1183 struct iw_param *data, char *extra) 1184 { 1185 /* XXX: what do we need? */ 1186 1187 return -EOPNOTSUPP; 1188 } 1189 1190 static int cfg80211_wext_siwpower(struct net_device *dev, 1191 struct iw_request_info *info, 1192 struct iw_param *wrq, char *extra) 1193 { 1194 struct wireless_dev *wdev = dev->ieee80211_ptr; 1195 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1196 bool ps; 1197 int timeout = wdev->ps_timeout; 1198 int err; 1199 1200 if (wdev->iftype != NL80211_IFTYPE_STATION) 1201 return -EINVAL; 1202 1203 if (!rdev->ops->set_power_mgmt) 1204 return -EOPNOTSUPP; 1205 1206 if (wrq->disabled) { 1207 ps = false; 1208 } else { 1209 switch (wrq->flags & IW_POWER_MODE) { 1210 case IW_POWER_ON: /* If not specified */ 1211 case IW_POWER_MODE: /* If set all mask */ 1212 case IW_POWER_ALL_R: /* If explicitely state all */ 1213 ps = true; 1214 break; 1215 default: /* Otherwise we ignore */ 1216 return -EINVAL; 1217 } 1218 1219 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1220 return -EINVAL; 1221 1222 if (wrq->flags & IW_POWER_TIMEOUT) 1223 timeout = wrq->value / 1000; 1224 } 1225 1226 wiphy_lock(&rdev->wiphy); 1227 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1228 wiphy_unlock(&rdev->wiphy); 1229 if (err) 1230 return err; 1231 1232 wdev->ps = ps; 1233 wdev->ps_timeout = timeout; 1234 1235 return 0; 1236 1237 } 1238 1239 static int cfg80211_wext_giwpower(struct net_device *dev, 1240 struct iw_request_info *info, 1241 struct iw_param *wrq, char *extra) 1242 { 1243 struct wireless_dev *wdev = dev->ieee80211_ptr; 1244 1245 wrq->disabled = !wdev->ps; 1246 1247 return 0; 1248 } 1249 1250 static int cfg80211_wext_siwrate(struct net_device *dev, 1251 struct iw_request_info *info, 1252 struct iw_param *rate, char *extra) 1253 { 1254 struct wireless_dev *wdev = dev->ieee80211_ptr; 1255 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1256 struct cfg80211_bitrate_mask mask; 1257 u32 fixed, maxrate; 1258 struct ieee80211_supported_band *sband; 1259 int band, ridx, ret; 1260 bool match = false; 1261 1262 if (!rdev->ops->set_bitrate_mask) 1263 return -EOPNOTSUPP; 1264 1265 memset(&mask, 0, sizeof(mask)); 1266 fixed = 0; 1267 maxrate = (u32)-1; 1268 1269 if (rate->value < 0) { 1270 /* nothing */ 1271 } else if (rate->fixed) { 1272 fixed = rate->value / 100000; 1273 } else { 1274 maxrate = rate->value / 100000; 1275 } 1276 1277 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1278 sband = wdev->wiphy->bands[band]; 1279 if (sband == NULL) 1280 continue; 1281 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1282 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1283 if (fixed == srate->bitrate) { 1284 mask.control[band].legacy = 1 << ridx; 1285 match = true; 1286 break; 1287 } 1288 if (srate->bitrate <= maxrate) { 1289 mask.control[band].legacy |= 1 << ridx; 1290 match = true; 1291 } 1292 } 1293 } 1294 1295 if (!match) 1296 return -EINVAL; 1297 1298 wiphy_lock(&rdev->wiphy); 1299 if (dev->ieee80211_ptr->valid_links) 1300 ret = -EOPNOTSUPP; 1301 else 1302 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1303 wiphy_unlock(&rdev->wiphy); 1304 1305 return ret; 1306 } 1307 1308 static int cfg80211_wext_giwrate(struct net_device *dev, 1309 struct iw_request_info *info, 1310 struct iw_param *rate, char *extra) 1311 { 1312 struct wireless_dev *wdev = dev->ieee80211_ptr; 1313 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1314 struct station_info sinfo = {}; 1315 u8 addr[ETH_ALEN]; 1316 int err; 1317 1318 if (wdev->iftype != NL80211_IFTYPE_STATION) 1319 return -EOPNOTSUPP; 1320 1321 if (!rdev->ops->get_station) 1322 return -EOPNOTSUPP; 1323 1324 err = 0; 1325 wdev_lock(wdev); 1326 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1327 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1328 ETH_ALEN); 1329 else 1330 err = -EOPNOTSUPP; 1331 wdev_unlock(wdev); 1332 if (err) 1333 return err; 1334 1335 wiphy_lock(&rdev->wiphy); 1336 err = rdev_get_station(rdev, dev, addr, &sinfo); 1337 wiphy_unlock(&rdev->wiphy); 1338 if (err) 1339 return err; 1340 1341 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1342 err = -EOPNOTSUPP; 1343 goto free; 1344 } 1345 1346 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1347 1348 free: 1349 cfg80211_sinfo_release_content(&sinfo); 1350 return err; 1351 } 1352 1353 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1354 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1355 { 1356 struct wireless_dev *wdev = dev->ieee80211_ptr; 1357 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1358 /* we are under RTNL - globally locked - so can use static structs */ 1359 static struct iw_statistics wstats; 1360 static struct station_info sinfo = {}; 1361 u8 bssid[ETH_ALEN]; 1362 int ret; 1363 1364 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1365 return NULL; 1366 1367 if (!rdev->ops->get_station) 1368 return NULL; 1369 1370 /* Grab BSSID of current BSS, if any */ 1371 wdev_lock(wdev); 1372 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1373 wdev_unlock(wdev); 1374 return NULL; 1375 } 1376 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1377 wdev_unlock(wdev); 1378 1379 memset(&sinfo, 0, sizeof(sinfo)); 1380 1381 wiphy_lock(&rdev->wiphy); 1382 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1383 wiphy_unlock(&rdev->wiphy); 1384 1385 if (ret) 1386 return NULL; 1387 1388 memset(&wstats, 0, sizeof(wstats)); 1389 1390 switch (rdev->wiphy.signal_type) { 1391 case CFG80211_SIGNAL_TYPE_MBM: 1392 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1393 int sig = sinfo.signal; 1394 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1395 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1396 wstats.qual.updated |= IW_QUAL_DBM; 1397 wstats.qual.level = sig; 1398 if (sig < -110) 1399 sig = -110; 1400 else if (sig > -40) 1401 sig = -40; 1402 wstats.qual.qual = sig + 110; 1403 break; 1404 } 1405 fallthrough; 1406 case CFG80211_SIGNAL_TYPE_UNSPEC: 1407 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1408 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1409 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1410 wstats.qual.level = sinfo.signal; 1411 wstats.qual.qual = sinfo.signal; 1412 break; 1413 } 1414 fallthrough; 1415 default: 1416 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1417 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1418 } 1419 1420 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1421 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1422 wstats.discard.misc = sinfo.rx_dropped_misc; 1423 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1424 wstats.discard.retries = sinfo.tx_failed; 1425 1426 cfg80211_sinfo_release_content(&sinfo); 1427 1428 return &wstats; 1429 } 1430 1431 static int cfg80211_wext_siwap(struct net_device *dev, 1432 struct iw_request_info *info, 1433 struct sockaddr *ap_addr, char *extra) 1434 { 1435 struct wireless_dev *wdev = dev->ieee80211_ptr; 1436 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1437 int ret; 1438 1439 wiphy_lock(&rdev->wiphy); 1440 switch (wdev->iftype) { 1441 case NL80211_IFTYPE_ADHOC: 1442 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1443 break; 1444 case NL80211_IFTYPE_STATION: 1445 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1446 break; 1447 default: 1448 ret = -EOPNOTSUPP; 1449 break; 1450 } 1451 wiphy_unlock(&rdev->wiphy); 1452 1453 return ret; 1454 } 1455 1456 static int cfg80211_wext_giwap(struct net_device *dev, 1457 struct iw_request_info *info, 1458 struct sockaddr *ap_addr, char *extra) 1459 { 1460 struct wireless_dev *wdev = dev->ieee80211_ptr; 1461 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1462 int ret; 1463 1464 wiphy_lock(&rdev->wiphy); 1465 switch (wdev->iftype) { 1466 case NL80211_IFTYPE_ADHOC: 1467 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1468 break; 1469 case NL80211_IFTYPE_STATION: 1470 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1471 break; 1472 default: 1473 ret = -EOPNOTSUPP; 1474 break; 1475 } 1476 wiphy_unlock(&rdev->wiphy); 1477 1478 return ret; 1479 } 1480 1481 static int cfg80211_wext_siwessid(struct net_device *dev, 1482 struct iw_request_info *info, 1483 struct iw_point *data, char *ssid) 1484 { 1485 struct wireless_dev *wdev = dev->ieee80211_ptr; 1486 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1487 int ret; 1488 1489 wiphy_lock(&rdev->wiphy); 1490 switch (wdev->iftype) { 1491 case NL80211_IFTYPE_ADHOC: 1492 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1493 break; 1494 case NL80211_IFTYPE_STATION: 1495 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1496 break; 1497 default: 1498 ret = -EOPNOTSUPP; 1499 break; 1500 } 1501 wiphy_unlock(&rdev->wiphy); 1502 1503 return ret; 1504 } 1505 1506 static int cfg80211_wext_giwessid(struct net_device *dev, 1507 struct iw_request_info *info, 1508 struct iw_point *data, char *ssid) 1509 { 1510 struct wireless_dev *wdev = dev->ieee80211_ptr; 1511 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1512 int ret; 1513 1514 data->flags = 0; 1515 data->length = 0; 1516 1517 wiphy_lock(&rdev->wiphy); 1518 switch (wdev->iftype) { 1519 case NL80211_IFTYPE_ADHOC: 1520 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1521 break; 1522 case NL80211_IFTYPE_STATION: 1523 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1524 break; 1525 default: 1526 ret = -EOPNOTSUPP; 1527 break; 1528 } 1529 wiphy_unlock(&rdev->wiphy); 1530 1531 return ret; 1532 } 1533 1534 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1535 struct iw_request_info *info, 1536 struct iw_point *data, char *extra) 1537 { 1538 struct wireless_dev *wdev = dev->ieee80211_ptr; 1539 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1540 struct cfg80211_pmksa cfg_pmksa; 1541 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1542 int ret; 1543 1544 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1545 1546 if (wdev->iftype != NL80211_IFTYPE_STATION) 1547 return -EINVAL; 1548 1549 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1550 cfg_pmksa.pmkid = pmksa->pmkid; 1551 1552 wiphy_lock(&rdev->wiphy); 1553 switch (pmksa->cmd) { 1554 case IW_PMKSA_ADD: 1555 if (!rdev->ops->set_pmksa) { 1556 ret = -EOPNOTSUPP; 1557 break; 1558 } 1559 1560 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1561 break; 1562 case IW_PMKSA_REMOVE: 1563 if (!rdev->ops->del_pmksa) { 1564 ret = -EOPNOTSUPP; 1565 break; 1566 } 1567 1568 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1569 break; 1570 case IW_PMKSA_FLUSH: 1571 if (!rdev->ops->flush_pmksa) { 1572 ret = -EOPNOTSUPP; 1573 break; 1574 } 1575 1576 ret = rdev_flush_pmksa(rdev, dev); 1577 break; 1578 default: 1579 ret = -EOPNOTSUPP; 1580 break; 1581 } 1582 wiphy_unlock(&rdev->wiphy); 1583 1584 return ret; 1585 } 1586 1587 #define DEFINE_WEXT_COMPAT_STUB(func, type) \ 1588 static int __ ## func(struct net_device *dev, \ 1589 struct iw_request_info *info, \ 1590 union iwreq_data *wrqu, \ 1591 char *extra) \ 1592 { \ 1593 return func(dev, info, (type *)wrqu, extra); \ 1594 } 1595 1596 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char) 1597 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq) 1598 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq) 1599 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32) 1600 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32) 1601 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point) 1602 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr) 1603 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr) 1604 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point) 1605 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point) 1606 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point) 1607 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point) 1608 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param) 1609 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param) 1610 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param) 1611 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param) 1612 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param) 1613 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param) 1614 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param) 1615 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param) 1616 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point) 1617 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point) 1618 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param) 1619 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param) 1620 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point) 1621 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param) 1622 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param) 1623 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point) 1624 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point) 1625 1626 static const iw_handler cfg80211_handlers[] = { 1627 [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname, 1628 [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq, 1629 [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq, 1630 [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode, 1631 [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode, 1632 [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange, 1633 [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap, 1634 [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap, 1635 [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme, 1636 [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan, 1637 [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan, 1638 [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid, 1639 [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid, 1640 [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate, 1641 [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate, 1642 [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts, 1643 [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts, 1644 [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag, 1645 [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag, 1646 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower, 1647 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower, 1648 [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry, 1649 [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry, 1650 [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode, 1651 [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode, 1652 [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower, 1653 [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower, 1654 [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie, 1655 [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth, 1656 [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth, 1657 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext, 1658 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa, 1659 }; 1660 1661 const struct iw_handler_def cfg80211_wext_handler = { 1662 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1663 .standard = cfg80211_handlers, 1664 .get_wireless_stats = cfg80211_wireless_stats, 1665 }; 1666