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) 2019-2023 Intel Corporation 11 */ 12 13 #include <linux/export.h> 14 #include <linux/wireless.h> 15 #include <linux/nl80211.h> 16 #include <linux/if_arp.h> 17 #include <linux/etherdevice.h> 18 #include <linux/slab.h> 19 #include <net/iw_handler.h> 20 #include <net/cfg80211.h> 21 #include <net/cfg80211-wext.h> 22 #include "wext-compat.h" 23 #include "core.h" 24 #include "rdev-ops.h" 25 26 int cfg80211_wext_giwname(struct net_device *dev, 27 struct iw_request_info *info, 28 union iwreq_data *wrqu, char *extra) 29 { 30 strcpy(wrqu->name, "IEEE 802.11"); 31 return 0; 32 } 33 34 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 35 union iwreq_data *wrqu, char *extra) 36 { 37 __u32 *mode = &wrqu->mode; 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 72 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 73 union iwreq_data *wrqu, char *extra) 74 { 75 __u32 *mode = &wrqu->mode; 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 } 106 107 108 int cfg80211_wext_giwrange(struct net_device *dev, 109 struct iw_request_info *info, 110 union iwreq_data *wrqu, char *extra) 111 { 112 struct iw_point *data = &wrqu->data; 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 } 220 221 222 /** 223 * cfg80211_wext_freq - get wext frequency for non-"auto" 224 * @freq: the wext freq encoding 225 * 226 * Returns: a frequency, or a negative error code, or 0 for auto. 227 */ 228 int cfg80211_wext_freq(struct iw_freq *freq) 229 { 230 /* 231 * Parse frequency - return 0 for auto and 232 * -EINVAL for impossible things. 233 */ 234 if (freq->e == 0) { 235 enum nl80211_band band = NL80211_BAND_2GHZ; 236 if (freq->m < 0) 237 return 0; 238 if (freq->m > 14) 239 band = NL80211_BAND_5GHZ; 240 return ieee80211_channel_to_frequency(freq->m, band); 241 } else { 242 int i, div = 1000000; 243 for (i = 0; i < freq->e; i++) 244 div /= 10; 245 if (div <= 0) 246 return -EINVAL; 247 return freq->m / div; 248 } 249 } 250 251 int cfg80211_wext_siwrts(struct net_device *dev, 252 struct iw_request_info *info, 253 union iwreq_data *wrqu, char *extra) 254 { 255 struct iw_param *rts = &wrqu->rts; 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 } 280 281 int cfg80211_wext_giwrts(struct net_device *dev, 282 struct iw_request_info *info, 283 union iwreq_data *wrqu, char *extra) 284 { 285 struct iw_param *rts = &wrqu->rts; 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 } 294 295 int cfg80211_wext_siwfrag(struct net_device *dev, 296 struct iw_request_info *info, 297 union iwreq_data *wrqu, char *extra) 298 { 299 struct iw_param *frag = &wrqu->frag; 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 } 324 325 int cfg80211_wext_giwfrag(struct net_device *dev, 326 struct iw_request_info *info, 327 union iwreq_data *wrqu, char *extra) 328 { 329 struct iw_param *frag = &wrqu->frag; 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 } 338 339 static int cfg80211_wext_siwretry(struct net_device *dev, 340 struct iw_request_info *info, 341 union iwreq_data *wrqu, char *extra) 342 { 343 struct iw_param *retry = &wrqu->retry; 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 union iwreq_data *wrqu, char *extra) 382 { 383 struct iw_param *retry = &wrqu->retry; 384 struct wireless_dev *wdev = dev->ieee80211_ptr; 385 386 retry->disabled = 0; 387 388 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 389 /* 390 * First return short value, iwconfig will ask long value 391 * later if needed 392 */ 393 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 394 retry->value = wdev->wiphy->retry_short; 395 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 396 retry->flags |= IW_RETRY_LONG; 397 398 return 0; 399 } 400 401 if (retry->flags & IW_RETRY_LONG) { 402 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 403 retry->value = wdev->wiphy->retry_long; 404 } 405 406 return 0; 407 } 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 < 4; 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_wext_siwencode(struct net_device *dev, 575 struct iw_request_info *info, 576 union iwreq_data *wrqu, char *keybuf) 577 { 578 struct iw_point *erq = &wrqu->encoding; 579 struct wireless_dev *wdev = dev->ieee80211_ptr; 580 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 581 int idx, err; 582 bool remove = false; 583 struct key_params params; 584 585 if (wdev->iftype != NL80211_IFTYPE_STATION && 586 wdev->iftype != NL80211_IFTYPE_ADHOC) 587 return -EOPNOTSUPP; 588 589 /* no use -- only MFP (set_default_mgmt_key) is optional */ 590 if (!rdev->ops->del_key || 591 !rdev->ops->add_key || 592 !rdev->ops->set_default_key) 593 return -EOPNOTSUPP; 594 595 wiphy_lock(&rdev->wiphy); 596 if (wdev->valid_links) { 597 err = -EOPNOTSUPP; 598 goto out; 599 } 600 601 idx = erq->flags & IW_ENCODE_INDEX; 602 if (idx == 0) { 603 idx = wdev->wext.default_key; 604 if (idx < 0) 605 idx = 0; 606 } else if (idx < 1 || idx > 4) { 607 err = -EINVAL; 608 goto out; 609 } else { 610 idx--; 611 } 612 613 if (erq->flags & IW_ENCODE_DISABLED) 614 remove = true; 615 else if (erq->length == 0) { 616 /* No key data - just set the default TX key index */ 617 err = 0; 618 if (wdev->connected || 619 (wdev->iftype == NL80211_IFTYPE_ADHOC && 620 wdev->u.ibss.current_bss)) 621 err = rdev_set_default_key(rdev, dev, -1, idx, true, 622 true); 623 if (!err) 624 wdev->wext.default_key = idx; 625 goto out; 626 } 627 628 memset(¶ms, 0, sizeof(params)); 629 params.key = keybuf; 630 params.key_len = erq->length; 631 if (erq->length == 5) { 632 params.cipher = WLAN_CIPHER_SUITE_WEP40; 633 } else if (erq->length == 13) { 634 params.cipher = WLAN_CIPHER_SUITE_WEP104; 635 } else if (!remove) { 636 err = -EINVAL; 637 goto out; 638 } 639 640 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove, 641 wdev->wext.default_key == -1, 642 idx, ¶ms); 643 out: 644 wiphy_unlock(&rdev->wiphy); 645 646 return err; 647 } 648 649 static int cfg80211_wext_siwencodeext(struct net_device *dev, 650 struct iw_request_info *info, 651 union iwreq_data *wrqu, char *extra) 652 { 653 struct iw_point *erq = &wrqu->encoding; 654 struct wireless_dev *wdev = dev->ieee80211_ptr; 655 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 656 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 657 const u8 *addr; 658 int idx; 659 bool remove = false; 660 struct key_params params; 661 u32 cipher; 662 int ret; 663 664 if (wdev->iftype != NL80211_IFTYPE_STATION && 665 wdev->iftype != NL80211_IFTYPE_ADHOC) 666 return -EOPNOTSUPP; 667 668 /* no use -- only MFP (set_default_mgmt_key) is optional */ 669 if (!rdev->ops->del_key || 670 !rdev->ops->add_key || 671 !rdev->ops->set_default_key) 672 return -EOPNOTSUPP; 673 674 if (wdev->valid_links) 675 return -EOPNOTSUPP; 676 677 switch (ext->alg) { 678 case IW_ENCODE_ALG_NONE: 679 remove = true; 680 cipher = 0; 681 break; 682 case IW_ENCODE_ALG_WEP: 683 if (ext->key_len == 5) 684 cipher = WLAN_CIPHER_SUITE_WEP40; 685 else if (ext->key_len == 13) 686 cipher = WLAN_CIPHER_SUITE_WEP104; 687 else 688 return -EINVAL; 689 break; 690 case IW_ENCODE_ALG_TKIP: 691 cipher = WLAN_CIPHER_SUITE_TKIP; 692 break; 693 case IW_ENCODE_ALG_CCMP: 694 cipher = WLAN_CIPHER_SUITE_CCMP; 695 break; 696 case IW_ENCODE_ALG_AES_CMAC: 697 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 698 break; 699 default: 700 return -EOPNOTSUPP; 701 } 702 703 if (erq->flags & IW_ENCODE_DISABLED) 704 remove = true; 705 706 idx = erq->flags & IW_ENCODE_INDEX; 707 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 708 if (idx < 4 || idx > 5) { 709 idx = wdev->wext.default_mgmt_key; 710 if (idx < 0) 711 return -EINVAL; 712 } else 713 idx--; 714 } else { 715 if (idx < 1 || idx > 4) { 716 idx = wdev->wext.default_key; 717 if (idx < 0) 718 return -EINVAL; 719 } else 720 idx--; 721 } 722 723 addr = ext->addr.sa_data; 724 if (is_broadcast_ether_addr(addr)) 725 addr = NULL; 726 727 memset(¶ms, 0, sizeof(params)); 728 params.key = ext->key; 729 params.key_len = ext->key_len; 730 params.cipher = cipher; 731 732 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 733 params.seq = ext->rx_seq; 734 params.seq_len = 6; 735 } 736 737 wiphy_lock(wdev->wiphy); 738 ret = cfg80211_set_encryption( 739 rdev, dev, 740 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 741 addr, remove, 742 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 743 idx, ¶ms); 744 wiphy_unlock(wdev->wiphy); 745 746 return ret; 747 } 748 749 static int cfg80211_wext_giwencode(struct net_device *dev, 750 struct iw_request_info *info, 751 union iwreq_data *wrqu, char *keybuf) 752 { 753 struct iw_point *erq = &wrqu->encoding; 754 struct wireless_dev *wdev = dev->ieee80211_ptr; 755 int idx; 756 757 if (wdev->iftype != NL80211_IFTYPE_STATION && 758 wdev->iftype != NL80211_IFTYPE_ADHOC) 759 return -EOPNOTSUPP; 760 761 idx = erq->flags & IW_ENCODE_INDEX; 762 if (idx == 0) { 763 idx = wdev->wext.default_key; 764 if (idx < 0) 765 idx = 0; 766 } else if (idx < 1 || idx > 4) 767 return -EINVAL; 768 else 769 idx--; 770 771 erq->flags = idx + 1; 772 773 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 774 erq->flags |= IW_ENCODE_DISABLED; 775 erq->length = 0; 776 return 0; 777 } 778 779 erq->length = min_t(size_t, erq->length, 780 wdev->wext.keys->params[idx].key_len); 781 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 782 erq->flags |= IW_ENCODE_ENABLED; 783 784 return 0; 785 } 786 787 static int cfg80211_wext_siwfreq(struct net_device *dev, 788 struct iw_request_info *info, 789 union iwreq_data *wrqu, char *extra) 790 { 791 struct iw_freq *wextfreq = &wrqu->freq; 792 struct wireless_dev *wdev = dev->ieee80211_ptr; 793 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 794 struct cfg80211_chan_def chandef = { 795 .width = NL80211_CHAN_WIDTH_20_NOHT, 796 }; 797 int freq, ret; 798 799 wiphy_lock(&rdev->wiphy); 800 801 switch (wdev->iftype) { 802 case NL80211_IFTYPE_STATION: 803 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 804 break; 805 case NL80211_IFTYPE_ADHOC: 806 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 807 break; 808 case NL80211_IFTYPE_MONITOR: 809 freq = cfg80211_wext_freq(wextfreq); 810 if (freq < 0) { 811 ret = freq; 812 break; 813 } 814 if (freq == 0) { 815 ret = -EINVAL; 816 break; 817 } 818 chandef.center_freq1 = freq; 819 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 820 if (!chandef.chan) { 821 ret = -EINVAL; 822 break; 823 } 824 ret = cfg80211_set_monitor_channel(rdev, &chandef); 825 break; 826 case NL80211_IFTYPE_MESH_POINT: 827 freq = cfg80211_wext_freq(wextfreq); 828 if (freq < 0) { 829 ret = freq; 830 break; 831 } 832 if (freq == 0) { 833 ret = -EINVAL; 834 break; 835 } 836 chandef.center_freq1 = freq; 837 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 838 if (!chandef.chan) { 839 ret = -EINVAL; 840 break; 841 } 842 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 843 break; 844 default: 845 ret = -EOPNOTSUPP; 846 break; 847 } 848 849 wiphy_unlock(&rdev->wiphy); 850 851 return ret; 852 } 853 854 static int cfg80211_wext_giwfreq(struct net_device *dev, 855 struct iw_request_info *info, 856 union iwreq_data *wrqu, char *extra) 857 { 858 struct iw_freq *freq = &wrqu->freq; 859 struct wireless_dev *wdev = dev->ieee80211_ptr; 860 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 861 struct cfg80211_chan_def chandef = {}; 862 int ret; 863 864 wiphy_lock(&rdev->wiphy); 865 switch (wdev->iftype) { 866 case NL80211_IFTYPE_STATION: 867 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 868 break; 869 case NL80211_IFTYPE_ADHOC: 870 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 871 break; 872 case NL80211_IFTYPE_MONITOR: 873 if (!rdev->ops->get_channel) { 874 ret = -EINVAL; 875 break; 876 } 877 878 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 879 if (ret) 880 break; 881 freq->m = chandef.chan->center_freq; 882 freq->e = 6; 883 ret = 0; 884 break; 885 default: 886 ret = -EINVAL; 887 break; 888 } 889 890 wiphy_unlock(&rdev->wiphy); 891 892 return ret; 893 } 894 895 static int cfg80211_wext_siwtxpower(struct net_device *dev, 896 struct iw_request_info *info, 897 union iwreq_data *data, char *extra) 898 { 899 struct wireless_dev *wdev = dev->ieee80211_ptr; 900 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 901 enum nl80211_tx_power_setting type; 902 int dbm = 0; 903 int ret; 904 905 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 906 return -EINVAL; 907 if (data->txpower.flags & IW_TXPOW_RANGE) 908 return -EINVAL; 909 910 if (!rdev->ops->set_tx_power) 911 return -EOPNOTSUPP; 912 913 /* only change when not disabling */ 914 if (!data->txpower.disabled) { 915 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 916 917 if (data->txpower.fixed) { 918 /* 919 * wext doesn't support negative values, see 920 * below where it's for automatic 921 */ 922 if (data->txpower.value < 0) 923 return -EINVAL; 924 dbm = data->txpower.value; 925 type = NL80211_TX_POWER_FIXED; 926 /* TODO: do regulatory check! */ 927 } else { 928 /* 929 * Automatic power level setting, max being the value 930 * passed in from userland. 931 */ 932 if (data->txpower.value < 0) { 933 type = NL80211_TX_POWER_AUTOMATIC; 934 } else { 935 dbm = data->txpower.value; 936 type = NL80211_TX_POWER_LIMITED; 937 } 938 } 939 } else { 940 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 941 schedule_work(&rdev->rfkill_block); 942 return 0; 943 } 944 945 wiphy_lock(&rdev->wiphy); 946 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 947 wiphy_unlock(&rdev->wiphy); 948 949 return ret; 950 } 951 952 static int cfg80211_wext_giwtxpower(struct net_device *dev, 953 struct iw_request_info *info, 954 union iwreq_data *data, char *extra) 955 { 956 struct wireless_dev *wdev = dev->ieee80211_ptr; 957 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 958 int err, val; 959 960 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 961 return -EINVAL; 962 if (data->txpower.flags & IW_TXPOW_RANGE) 963 return -EINVAL; 964 965 if (!rdev->ops->get_tx_power) 966 return -EOPNOTSUPP; 967 968 wiphy_lock(&rdev->wiphy); 969 err = rdev_get_tx_power(rdev, wdev, &val); 970 wiphy_unlock(&rdev->wiphy); 971 if (err) 972 return err; 973 974 /* well... oh well */ 975 data->txpower.fixed = 1; 976 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 977 data->txpower.value = val; 978 data->txpower.flags = IW_TXPOW_DBM; 979 980 return 0; 981 } 982 983 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 984 s32 auth_alg) 985 { 986 int nr_alg = 0; 987 988 if (!auth_alg) 989 return -EINVAL; 990 991 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 992 IW_AUTH_ALG_SHARED_KEY | 993 IW_AUTH_ALG_LEAP)) 994 return -EINVAL; 995 996 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 997 nr_alg++; 998 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 999 } 1000 1001 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 1002 nr_alg++; 1003 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 1004 } 1005 1006 if (auth_alg & IW_AUTH_ALG_LEAP) { 1007 nr_alg++; 1008 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 1009 } 1010 1011 if (nr_alg > 1) 1012 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 1013 1014 return 0; 1015 } 1016 1017 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 1018 { 1019 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 1020 IW_AUTH_WPA_VERSION_WPA2| 1021 IW_AUTH_WPA_VERSION_DISABLED)) 1022 return -EINVAL; 1023 1024 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 1025 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 1026 IW_AUTH_WPA_VERSION_WPA2))) 1027 return -EINVAL; 1028 1029 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 1030 wdev->wext.connect.crypto.wpa_versions &= 1031 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 1032 1033 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 1034 wdev->wext.connect.crypto.wpa_versions |= 1035 NL80211_WPA_VERSION_1; 1036 1037 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 1038 wdev->wext.connect.crypto.wpa_versions |= 1039 NL80211_WPA_VERSION_2; 1040 1041 return 0; 1042 } 1043 1044 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 1045 { 1046 if (cipher & IW_AUTH_CIPHER_WEP40) 1047 wdev->wext.connect.crypto.cipher_group = 1048 WLAN_CIPHER_SUITE_WEP40; 1049 else if (cipher & IW_AUTH_CIPHER_WEP104) 1050 wdev->wext.connect.crypto.cipher_group = 1051 WLAN_CIPHER_SUITE_WEP104; 1052 else if (cipher & IW_AUTH_CIPHER_TKIP) 1053 wdev->wext.connect.crypto.cipher_group = 1054 WLAN_CIPHER_SUITE_TKIP; 1055 else if (cipher & IW_AUTH_CIPHER_CCMP) 1056 wdev->wext.connect.crypto.cipher_group = 1057 WLAN_CIPHER_SUITE_CCMP; 1058 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1059 wdev->wext.connect.crypto.cipher_group = 1060 WLAN_CIPHER_SUITE_AES_CMAC; 1061 else if (cipher & IW_AUTH_CIPHER_NONE) 1062 wdev->wext.connect.crypto.cipher_group = 0; 1063 else 1064 return -EINVAL; 1065 1066 return 0; 1067 } 1068 1069 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1070 { 1071 int nr_ciphers = 0; 1072 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1073 1074 if (cipher & IW_AUTH_CIPHER_WEP40) { 1075 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1076 nr_ciphers++; 1077 } 1078 1079 if (cipher & IW_AUTH_CIPHER_WEP104) { 1080 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1081 nr_ciphers++; 1082 } 1083 1084 if (cipher & IW_AUTH_CIPHER_TKIP) { 1085 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1086 nr_ciphers++; 1087 } 1088 1089 if (cipher & IW_AUTH_CIPHER_CCMP) { 1090 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1091 nr_ciphers++; 1092 } 1093 1094 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1095 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1096 nr_ciphers++; 1097 } 1098 1099 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1100 1101 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1102 1103 return 0; 1104 } 1105 1106 1107 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1108 { 1109 int nr_akm_suites = 0; 1110 1111 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1112 IW_AUTH_KEY_MGMT_PSK)) 1113 return -EINVAL; 1114 1115 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1116 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1117 WLAN_AKM_SUITE_8021X; 1118 nr_akm_suites++; 1119 } 1120 1121 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1122 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1123 WLAN_AKM_SUITE_PSK; 1124 nr_akm_suites++; 1125 } 1126 1127 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1128 1129 return 0; 1130 } 1131 1132 static int cfg80211_wext_siwauth(struct net_device *dev, 1133 struct iw_request_info *info, 1134 union iwreq_data *wrqu, char *extra) 1135 { 1136 struct iw_param *data = &wrqu->param; 1137 struct wireless_dev *wdev = dev->ieee80211_ptr; 1138 1139 if (wdev->iftype != NL80211_IFTYPE_STATION) 1140 return -EOPNOTSUPP; 1141 1142 switch (data->flags & IW_AUTH_INDEX) { 1143 case IW_AUTH_PRIVACY_INVOKED: 1144 wdev->wext.connect.privacy = data->value; 1145 return 0; 1146 case IW_AUTH_WPA_VERSION: 1147 return cfg80211_set_wpa_version(wdev, data->value); 1148 case IW_AUTH_CIPHER_GROUP: 1149 return cfg80211_set_cipher_group(wdev, data->value); 1150 case IW_AUTH_KEY_MGMT: 1151 return cfg80211_set_key_mgt(wdev, data->value); 1152 case IW_AUTH_CIPHER_PAIRWISE: 1153 return cfg80211_set_cipher_pairwise(wdev, data->value); 1154 case IW_AUTH_80211_AUTH_ALG: 1155 return cfg80211_set_auth_alg(wdev, data->value); 1156 case IW_AUTH_WPA_ENABLED: 1157 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1158 case IW_AUTH_DROP_UNENCRYPTED: 1159 case IW_AUTH_MFP: 1160 return 0; 1161 default: 1162 return -EOPNOTSUPP; 1163 } 1164 } 1165 1166 static int cfg80211_wext_giwauth(struct net_device *dev, 1167 struct iw_request_info *info, 1168 union iwreq_data *wrqu, char *extra) 1169 { 1170 /* XXX: what do we need? */ 1171 1172 return -EOPNOTSUPP; 1173 } 1174 1175 static int cfg80211_wext_siwpower(struct net_device *dev, 1176 struct iw_request_info *info, 1177 union iwreq_data *wrqu, char *extra) 1178 { 1179 struct iw_param *wrq = &wrqu->power; 1180 struct wireless_dev *wdev = dev->ieee80211_ptr; 1181 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1182 bool ps; 1183 int timeout = wdev->ps_timeout; 1184 int err; 1185 1186 if (wdev->iftype != NL80211_IFTYPE_STATION) 1187 return -EINVAL; 1188 1189 if (!rdev->ops->set_power_mgmt) 1190 return -EOPNOTSUPP; 1191 1192 if (wrq->disabled) { 1193 ps = false; 1194 } else { 1195 switch (wrq->flags & IW_POWER_MODE) { 1196 case IW_POWER_ON: /* If not specified */ 1197 case IW_POWER_MODE: /* If set all mask */ 1198 case IW_POWER_ALL_R: /* If explicitly state all */ 1199 ps = true; 1200 break; 1201 default: /* Otherwise we ignore */ 1202 return -EINVAL; 1203 } 1204 1205 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1206 return -EINVAL; 1207 1208 if (wrq->flags & IW_POWER_TIMEOUT) 1209 timeout = wrq->value / 1000; 1210 } 1211 1212 wiphy_lock(&rdev->wiphy); 1213 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1214 wiphy_unlock(&rdev->wiphy); 1215 if (err) 1216 return err; 1217 1218 wdev->ps = ps; 1219 wdev->ps_timeout = timeout; 1220 1221 return 0; 1222 1223 } 1224 1225 static int cfg80211_wext_giwpower(struct net_device *dev, 1226 struct iw_request_info *info, 1227 union iwreq_data *wrqu, char *extra) 1228 { 1229 struct iw_param *wrq = &wrqu->power; 1230 struct wireless_dev *wdev = dev->ieee80211_ptr; 1231 1232 wrq->disabled = !wdev->ps; 1233 1234 return 0; 1235 } 1236 1237 static int cfg80211_wext_siwrate(struct net_device *dev, 1238 struct iw_request_info *info, 1239 union iwreq_data *wrqu, char *extra) 1240 { 1241 struct iw_param *rate = &wrqu->bitrate; 1242 struct wireless_dev *wdev = dev->ieee80211_ptr; 1243 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1244 struct cfg80211_bitrate_mask mask; 1245 u32 fixed, maxrate; 1246 struct ieee80211_supported_band *sband; 1247 int band, ridx, ret; 1248 bool match = false; 1249 1250 if (!rdev->ops->set_bitrate_mask) 1251 return -EOPNOTSUPP; 1252 1253 memset(&mask, 0, sizeof(mask)); 1254 fixed = 0; 1255 maxrate = (u32)-1; 1256 1257 if (rate->value < 0) { 1258 /* nothing */ 1259 } else if (rate->fixed) { 1260 fixed = rate->value / 100000; 1261 } else { 1262 maxrate = rate->value / 100000; 1263 } 1264 1265 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1266 sband = wdev->wiphy->bands[band]; 1267 if (sband == NULL) 1268 continue; 1269 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1270 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1271 if (fixed == srate->bitrate) { 1272 mask.control[band].legacy = 1 << ridx; 1273 match = true; 1274 break; 1275 } 1276 if (srate->bitrate <= maxrate) { 1277 mask.control[band].legacy |= 1 << ridx; 1278 match = true; 1279 } 1280 } 1281 } 1282 1283 if (!match) 1284 return -EINVAL; 1285 1286 wiphy_lock(&rdev->wiphy); 1287 if (dev->ieee80211_ptr->valid_links) 1288 ret = -EOPNOTSUPP; 1289 else 1290 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1291 wiphy_unlock(&rdev->wiphy); 1292 1293 return ret; 1294 } 1295 1296 static int cfg80211_wext_giwrate(struct net_device *dev, 1297 struct iw_request_info *info, 1298 union iwreq_data *wrqu, char *extra) 1299 { 1300 struct iw_param *rate = &wrqu->bitrate; 1301 struct wireless_dev *wdev = dev->ieee80211_ptr; 1302 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1303 struct station_info sinfo = {}; 1304 u8 addr[ETH_ALEN]; 1305 int err; 1306 1307 if (wdev->iftype != NL80211_IFTYPE_STATION) 1308 return -EOPNOTSUPP; 1309 1310 if (!rdev->ops->get_station) 1311 return -EOPNOTSUPP; 1312 1313 err = 0; 1314 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1315 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1316 ETH_ALEN); 1317 else 1318 err = -EOPNOTSUPP; 1319 if (err) 1320 return err; 1321 1322 wiphy_lock(&rdev->wiphy); 1323 err = rdev_get_station(rdev, dev, addr, &sinfo); 1324 wiphy_unlock(&rdev->wiphy); 1325 if (err) 1326 return err; 1327 1328 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1329 err = -EOPNOTSUPP; 1330 goto free; 1331 } 1332 1333 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1334 1335 free: 1336 cfg80211_sinfo_release_content(&sinfo); 1337 return err; 1338 } 1339 1340 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1341 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1342 { 1343 struct wireless_dev *wdev = dev->ieee80211_ptr; 1344 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1345 /* we are under RTNL - globally locked - so can use static structs */ 1346 static struct iw_statistics wstats; 1347 static struct station_info sinfo = {}; 1348 u8 bssid[ETH_ALEN]; 1349 int ret; 1350 1351 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1352 return NULL; 1353 1354 if (!rdev->ops->get_station) 1355 return NULL; 1356 1357 /* Grab BSSID of current BSS, if any */ 1358 wiphy_lock(&rdev->wiphy); 1359 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1360 wiphy_unlock(&rdev->wiphy); 1361 return NULL; 1362 } 1363 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1364 1365 memset(&sinfo, 0, sizeof(sinfo)); 1366 1367 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1368 wiphy_unlock(&rdev->wiphy); 1369 1370 if (ret) 1371 return NULL; 1372 1373 memset(&wstats, 0, sizeof(wstats)); 1374 1375 switch (rdev->wiphy.signal_type) { 1376 case CFG80211_SIGNAL_TYPE_MBM: 1377 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1378 int sig = sinfo.signal; 1379 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1380 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1381 wstats.qual.updated |= IW_QUAL_DBM; 1382 wstats.qual.level = sig; 1383 if (sig < -110) 1384 sig = -110; 1385 else if (sig > -40) 1386 sig = -40; 1387 wstats.qual.qual = sig + 110; 1388 break; 1389 } 1390 fallthrough; 1391 case CFG80211_SIGNAL_TYPE_UNSPEC: 1392 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1393 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1394 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1395 wstats.qual.level = sinfo.signal; 1396 wstats.qual.qual = sinfo.signal; 1397 break; 1398 } 1399 fallthrough; 1400 default: 1401 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1402 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1403 } 1404 1405 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1406 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1407 wstats.discard.misc = sinfo.rx_dropped_misc; 1408 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1409 wstats.discard.retries = sinfo.tx_failed; 1410 1411 cfg80211_sinfo_release_content(&sinfo); 1412 1413 return &wstats; 1414 } 1415 1416 static int cfg80211_wext_siwap(struct net_device *dev, 1417 struct iw_request_info *info, 1418 union iwreq_data *wrqu, char *extra) 1419 { 1420 struct sockaddr *ap_addr = &wrqu->ap_addr; 1421 struct wireless_dev *wdev = dev->ieee80211_ptr; 1422 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1423 int ret; 1424 1425 wiphy_lock(&rdev->wiphy); 1426 switch (wdev->iftype) { 1427 case NL80211_IFTYPE_ADHOC: 1428 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1429 break; 1430 case NL80211_IFTYPE_STATION: 1431 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1432 break; 1433 default: 1434 ret = -EOPNOTSUPP; 1435 break; 1436 } 1437 wiphy_unlock(&rdev->wiphy); 1438 1439 return ret; 1440 } 1441 1442 static int cfg80211_wext_giwap(struct net_device *dev, 1443 struct iw_request_info *info, 1444 union iwreq_data *wrqu, char *extra) 1445 { 1446 struct sockaddr *ap_addr = &wrqu->ap_addr; 1447 struct wireless_dev *wdev = dev->ieee80211_ptr; 1448 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1449 int ret; 1450 1451 wiphy_lock(&rdev->wiphy); 1452 switch (wdev->iftype) { 1453 case NL80211_IFTYPE_ADHOC: 1454 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1455 break; 1456 case NL80211_IFTYPE_STATION: 1457 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1458 break; 1459 default: 1460 ret = -EOPNOTSUPP; 1461 break; 1462 } 1463 wiphy_unlock(&rdev->wiphy); 1464 1465 return ret; 1466 } 1467 1468 static int cfg80211_wext_siwessid(struct net_device *dev, 1469 struct iw_request_info *info, 1470 union iwreq_data *wrqu, char *ssid) 1471 { 1472 struct iw_point *data = &wrqu->data; 1473 struct wireless_dev *wdev = dev->ieee80211_ptr; 1474 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1475 int ret; 1476 1477 wiphy_lock(&rdev->wiphy); 1478 switch (wdev->iftype) { 1479 case NL80211_IFTYPE_ADHOC: 1480 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1481 break; 1482 case NL80211_IFTYPE_STATION: 1483 ret = cfg80211_mgd_wext_siwessid(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_giwessid(struct net_device *dev, 1495 struct iw_request_info *info, 1496 union iwreq_data *wrqu, char *ssid) 1497 { 1498 struct iw_point *data = &wrqu->data; 1499 struct wireless_dev *wdev = dev->ieee80211_ptr; 1500 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1501 int ret; 1502 1503 data->flags = 0; 1504 data->length = 0; 1505 1506 wiphy_lock(&rdev->wiphy); 1507 switch (wdev->iftype) { 1508 case NL80211_IFTYPE_ADHOC: 1509 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1510 break; 1511 case NL80211_IFTYPE_STATION: 1512 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1513 break; 1514 default: 1515 ret = -EOPNOTSUPP; 1516 break; 1517 } 1518 wiphy_unlock(&rdev->wiphy); 1519 1520 return ret; 1521 } 1522 1523 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1524 struct iw_request_info *info, 1525 union iwreq_data *wrqu, char *extra) 1526 { 1527 struct wireless_dev *wdev = dev->ieee80211_ptr; 1528 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1529 struct cfg80211_pmksa cfg_pmksa; 1530 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1531 int ret; 1532 1533 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1534 1535 if (wdev->iftype != NL80211_IFTYPE_STATION) 1536 return -EINVAL; 1537 1538 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1539 cfg_pmksa.pmkid = pmksa->pmkid; 1540 1541 wiphy_lock(&rdev->wiphy); 1542 switch (pmksa->cmd) { 1543 case IW_PMKSA_ADD: 1544 if (!rdev->ops->set_pmksa) { 1545 ret = -EOPNOTSUPP; 1546 break; 1547 } 1548 1549 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1550 break; 1551 case IW_PMKSA_REMOVE: 1552 if (!rdev->ops->del_pmksa) { 1553 ret = -EOPNOTSUPP; 1554 break; 1555 } 1556 1557 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1558 break; 1559 case IW_PMKSA_FLUSH: 1560 if (!rdev->ops->flush_pmksa) { 1561 ret = -EOPNOTSUPP; 1562 break; 1563 } 1564 1565 ret = rdev_flush_pmksa(rdev, dev); 1566 break; 1567 default: 1568 ret = -EOPNOTSUPP; 1569 break; 1570 } 1571 wiphy_unlock(&rdev->wiphy); 1572 1573 return ret; 1574 } 1575 1576 static const iw_handler cfg80211_handlers[] = { 1577 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), 1578 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq), 1579 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq), 1580 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), 1581 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), 1582 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), 1583 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap), 1584 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap), 1585 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme), 1586 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), 1587 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), 1588 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid), 1589 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid), 1590 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate), 1591 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate), 1592 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), 1593 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), 1594 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), 1595 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), 1596 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower), 1597 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower), 1598 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry), 1599 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), 1600 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode), 1601 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode), 1602 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower), 1603 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower), 1604 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie), 1605 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth), 1606 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth), 1607 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext), 1608 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa), 1609 }; 1610 1611 const struct iw_handler_def cfg80211_wext_handler = { 1612 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1613 .standard = cfg80211_handlers, 1614 .get_wireless_stats = cfg80211_wireless_stats, 1615 }; 1616