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 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
34
35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
36 union iwreq_data *wrqu, char *extra)
37 {
38 __u32 *mode = &wrqu->mode;
39 struct wireless_dev *wdev = dev->ieee80211_ptr;
40 struct cfg80211_registered_device *rdev;
41 struct vif_params vifparams;
42 enum nl80211_iftype type;
43 int ret;
44
45 rdev = wiphy_to_rdev(wdev->wiphy);
46
47 switch (*mode) {
48 case IW_MODE_INFRA:
49 type = NL80211_IFTYPE_STATION;
50 break;
51 case IW_MODE_ADHOC:
52 type = NL80211_IFTYPE_ADHOC;
53 break;
54 case IW_MODE_MONITOR:
55 type = NL80211_IFTYPE_MONITOR;
56 break;
57 default:
58 return -EINVAL;
59 }
60
61 if (type == wdev->iftype)
62 return 0;
63
64 memset(&vifparams, 0, sizeof(vifparams));
65
66 wiphy_lock(wdev->wiphy);
67 ret = cfg80211_change_iface(rdev, dev, type, &vifparams);
68 wiphy_unlock(wdev->wiphy);
69
70 return ret;
71 }
72 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
73
74 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
75 union iwreq_data *wrqu, char *extra)
76 {
77 __u32 *mode = &wrqu->mode;
78 struct wireless_dev *wdev = dev->ieee80211_ptr;
79
80 if (!wdev)
81 return -EOPNOTSUPP;
82
83 switch (wdev->iftype) {
84 case NL80211_IFTYPE_AP:
85 *mode = IW_MODE_MASTER;
86 break;
87 case NL80211_IFTYPE_STATION:
88 *mode = IW_MODE_INFRA;
89 break;
90 case NL80211_IFTYPE_ADHOC:
91 *mode = IW_MODE_ADHOC;
92 break;
93 case NL80211_IFTYPE_MONITOR:
94 *mode = IW_MODE_MONITOR;
95 break;
96 case NL80211_IFTYPE_WDS:
97 *mode = IW_MODE_REPEAT;
98 break;
99 case NL80211_IFTYPE_AP_VLAN:
100 *mode = IW_MODE_SECOND; /* FIXME */
101 break;
102 default:
103 *mode = IW_MODE_AUTO;
104 break;
105 }
106 return 0;
107 }
108 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
109
110
111 int cfg80211_wext_giwrange(struct net_device *dev,
112 struct iw_request_info *info,
113 union iwreq_data *wrqu, char *extra)
114 {
115 struct iw_point *data = &wrqu->data;
116 struct wireless_dev *wdev = dev->ieee80211_ptr;
117 struct iw_range *range = (struct iw_range *) extra;
118 enum nl80211_band band;
119 int i, c = 0;
120
121 if (!wdev)
122 return -EOPNOTSUPP;
123
124 data->length = sizeof(struct iw_range);
125 memset(range, 0, sizeof(struct iw_range));
126
127 range->we_version_compiled = WIRELESS_EXT;
128 range->we_version_source = 21;
129 range->retry_capa = IW_RETRY_LIMIT;
130 range->retry_flags = IW_RETRY_LIMIT;
131 range->min_retry = 0;
132 range->max_retry = 255;
133 range->min_rts = 0;
134 range->max_rts = 2347;
135 range->min_frag = 256;
136 range->max_frag = 2346;
137
138 range->max_encoding_tokens = 4;
139
140 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
141
142 switch (wdev->wiphy->signal_type) {
143 case CFG80211_SIGNAL_TYPE_NONE:
144 break;
145 case CFG80211_SIGNAL_TYPE_MBM:
146 range->max_qual.level = (u8)-110;
147 range->max_qual.qual = 70;
148 range->avg_qual.qual = 35;
149 range->max_qual.updated |= IW_QUAL_DBM;
150 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
151 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
152 break;
153 case CFG80211_SIGNAL_TYPE_UNSPEC:
154 range->max_qual.level = 100;
155 range->max_qual.qual = 100;
156 range->avg_qual.qual = 50;
157 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
158 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
159 break;
160 }
161
162 range->avg_qual.level = range->max_qual.level / 2;
163 range->avg_qual.noise = range->max_qual.noise / 2;
164 range->avg_qual.updated = range->max_qual.updated;
165
166 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
167 switch (wdev->wiphy->cipher_suites[i]) {
168 case WLAN_CIPHER_SUITE_TKIP:
169 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
170 IW_ENC_CAPA_WPA);
171 break;
172
173 case WLAN_CIPHER_SUITE_CCMP:
174 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
175 IW_ENC_CAPA_WPA2);
176 break;
177
178 case WLAN_CIPHER_SUITE_WEP40:
179 range->encoding_size[range->num_encoding_sizes++] =
180 WLAN_KEY_LEN_WEP40;
181 break;
182
183 case WLAN_CIPHER_SUITE_WEP104:
184 range->encoding_size[range->num_encoding_sizes++] =
185 WLAN_KEY_LEN_WEP104;
186 break;
187 }
188 }
189
190 for (band = 0; band < NUM_NL80211_BANDS; band ++) {
191 struct ieee80211_supported_band *sband;
192
193 sband = wdev->wiphy->bands[band];
194
195 if (!sband)
196 continue;
197
198 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
199 struct ieee80211_channel *chan = &sband->channels[i];
200
201 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
202 range->freq[c].i =
203 ieee80211_frequency_to_channel(
204 chan->center_freq);
205 range->freq[c].m = chan->center_freq;
206 range->freq[c].e = 6;
207 c++;
208 }
209 }
210 }
211 range->num_channels = c;
212 range->num_frequency = c;
213
214 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
215 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
216 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
217
218 if (wdev->wiphy->max_scan_ssids > 0)
219 range->scan_capa |= IW_SCAN_CAPA_ESSID;
220
221 return 0;
222 }
223 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
224
225
226 /**
227 * cfg80211_wext_freq - get wext frequency for non-"auto"
228 * @freq: the wext freq encoding
229 *
230 * Returns: a frequency, or a negative error code, or 0 for auto.
231 */
232 int cfg80211_wext_freq(struct iw_freq *freq)
233 {
234 /*
235 * Parse frequency - return 0 for auto and
236 * -EINVAL for impossible things.
237 */
238 if (freq->e == 0) {
239 enum nl80211_band band = NL80211_BAND_2GHZ;
240 if (freq->m < 0)
241 return 0;
242 if (freq->m > 14)
243 band = NL80211_BAND_5GHZ;
244 return ieee80211_channel_to_frequency(freq->m, band);
245 } else {
246 int i, div = 1000000;
247 for (i = 0; i < freq->e; i++)
248 div /= 10;
249 if (div <= 0)
250 return -EINVAL;
251 return freq->m / div;
252 }
253 }
254
255 int cfg80211_wext_siwrts(struct net_device *dev,
256 struct iw_request_info *info,
257 union iwreq_data *wrqu, char *extra)
258 {
259 struct iw_param *rts = &wrqu->rts;
260 struct wireless_dev *wdev = dev->ieee80211_ptr;
261 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
262 u32 orts = wdev->wiphy->rts_threshold;
263 int err;
264
265 wiphy_lock(&rdev->wiphy);
266 if (rts->disabled || !rts->fixed) {
267 wdev->wiphy->rts_threshold = (u32) -1;
268 } else if (rts->value < 0) {
269 err = -EINVAL;
270 goto out;
271 } else {
272 wdev->wiphy->rts_threshold = rts->value;
273 }
274
275 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
276
277 if (err)
278 wdev->wiphy->rts_threshold = orts;
279
280 out:
281 wiphy_unlock(&rdev->wiphy);
282 return err;
283 }
284 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
285
286 int cfg80211_wext_giwrts(struct net_device *dev,
287 struct iw_request_info *info,
288 union iwreq_data *wrqu, char *extra)
289 {
290 struct iw_param *rts = &wrqu->rts;
291 struct wireless_dev *wdev = dev->ieee80211_ptr;
292
293 rts->value = wdev->wiphy->rts_threshold;
294 rts->disabled = rts->value == (u32) -1;
295 rts->fixed = 1;
296
297 return 0;
298 }
299 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
300
301 int cfg80211_wext_siwfrag(struct net_device *dev,
302 struct iw_request_info *info,
303 union iwreq_data *wrqu, char *extra)
304 {
305 struct iw_param *frag = &wrqu->frag;
306 struct wireless_dev *wdev = dev->ieee80211_ptr;
307 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
308 u32 ofrag = wdev->wiphy->frag_threshold;
309 int err;
310
311 wiphy_lock(&rdev->wiphy);
312 if (frag->disabled || !frag->fixed) {
313 wdev->wiphy->frag_threshold = (u32) -1;
314 } else if (frag->value < 256) {
315 err = -EINVAL;
316 goto out;
317 } else {
318 /* Fragment length must be even, so strip LSB. */
319 wdev->wiphy->frag_threshold = frag->value & ~0x1;
320 }
321
322 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
323 if (err)
324 wdev->wiphy->frag_threshold = ofrag;
325 out:
326 wiphy_unlock(&rdev->wiphy);
327
328 return err;
329 }
330 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
331
332 int cfg80211_wext_giwfrag(struct net_device *dev,
333 struct iw_request_info *info,
334 union iwreq_data *wrqu, char *extra)
335 {
336 struct iw_param *frag = &wrqu->frag;
337 struct wireless_dev *wdev = dev->ieee80211_ptr;
338
339 frag->value = wdev->wiphy->frag_threshold;
340 frag->disabled = frag->value == (u32) -1;
341 frag->fixed = 1;
342
343 return 0;
344 }
345 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
346
347 static int cfg80211_wext_siwretry(struct net_device *dev,
348 struct iw_request_info *info,
349 union iwreq_data *wrqu, char *extra)
350 {
351 struct iw_param *retry = &wrqu->retry;
352 struct wireless_dev *wdev = dev->ieee80211_ptr;
353 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
354 u32 changed = 0;
355 u8 olong = wdev->wiphy->retry_long;
356 u8 oshort = wdev->wiphy->retry_short;
357 int err;
358
359 if (retry->disabled || retry->value < 1 || retry->value > 255 ||
360 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
361 return -EINVAL;
362
363 wiphy_lock(&rdev->wiphy);
364 if (retry->flags & IW_RETRY_LONG) {
365 wdev->wiphy->retry_long = retry->value;
366 changed |= WIPHY_PARAM_RETRY_LONG;
367 } else if (retry->flags & IW_RETRY_SHORT) {
368 wdev->wiphy->retry_short = retry->value;
369 changed |= WIPHY_PARAM_RETRY_SHORT;
370 } else {
371 wdev->wiphy->retry_short = retry->value;
372 wdev->wiphy->retry_long = retry->value;
373 changed |= WIPHY_PARAM_RETRY_LONG;
374 changed |= WIPHY_PARAM_RETRY_SHORT;
375 }
376
377 err = rdev_set_wiphy_params(rdev, changed);
378 if (err) {
379 wdev->wiphy->retry_short = oshort;
380 wdev->wiphy->retry_long = olong;
381 }
382 wiphy_unlock(&rdev->wiphy);
383
384 return err;
385 }
386
387 int cfg80211_wext_giwretry(struct net_device *dev,
388 struct iw_request_info *info,
389 union iwreq_data *wrqu, char *extra)
390 {
391 struct iw_param *retry = &wrqu->retry;
392 struct wireless_dev *wdev = dev->ieee80211_ptr;
393
394 retry->disabled = 0;
395
396 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
397 /*
398 * First return short value, iwconfig will ask long value
399 * later if needed
400 */
401 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
402 retry->value = wdev->wiphy->retry_short;
403 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
404 retry->flags |= IW_RETRY_LONG;
405
406 return 0;
407 }
408
409 if (retry->flags & IW_RETRY_LONG) {
410 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
411 retry->value = wdev->wiphy->retry_long;
412 }
413
414 return 0;
415 }
416 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
417
418 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
419 struct net_device *dev, bool pairwise,
420 const u8 *addr, bool remove, bool tx_key,
421 int idx, struct key_params *params)
422 {
423 struct wireless_dev *wdev = dev->ieee80211_ptr;
424 int err, i;
425 bool rejoin = false;
426
427 if (wdev->valid_links)
428 return -EINVAL;
429
430 if (pairwise && !addr)
431 return -EINVAL;
432
433 /*
434 * In many cases we won't actually need this, but it's better
435 * to do it first in case the allocation fails. Don't use wext.
436 */
437 if (!wdev->wext.keys) {
438 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
439 GFP_KERNEL);
440 if (!wdev->wext.keys)
441 return -ENOMEM;
442 for (i = 0; i < 4; i++)
443 wdev->wext.keys->params[i].key =
444 wdev->wext.keys->data[i];
445 }
446
447 if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
448 wdev->iftype != NL80211_IFTYPE_STATION)
449 return -EOPNOTSUPP;
450
451 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
452 if (!wdev->connected)
453 return -ENOLINK;
454
455 if (!rdev->ops->set_default_mgmt_key)
456 return -EOPNOTSUPP;
457
458 if (idx < 4 || idx > 5)
459 return -EINVAL;
460 } else if (idx < 0 || idx > 3)
461 return -EINVAL;
462
463 if (remove) {
464 err = 0;
465 if (wdev->connected ||
466 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
467 wdev->u.ibss.current_bss)) {
468 /*
469 * If removing the current TX key, we will need to
470 * join a new IBSS without the privacy bit clear.
471 */
472 if (idx == wdev->wext.default_key &&
473 wdev->iftype == NL80211_IFTYPE_ADHOC) {
474 cfg80211_leave_ibss(rdev, wdev->netdev, true);
475 rejoin = true;
476 }
477
478 if (!pairwise && addr &&
479 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
480 err = -ENOENT;
481 else
482 err = rdev_del_key(rdev, dev, -1, idx, pairwise,
483 addr);
484 }
485 wdev->wext.connect.privacy = false;
486 /*
487 * Applications using wireless extensions expect to be
488 * able to delete keys that don't exist, so allow that.
489 */
490 if (err == -ENOENT)
491 err = 0;
492 if (!err) {
493 if (!addr && idx < 4) {
494 memset(wdev->wext.keys->data[idx], 0,
495 sizeof(wdev->wext.keys->data[idx]));
496 wdev->wext.keys->params[idx].key_len = 0;
497 wdev->wext.keys->params[idx].cipher = 0;
498 }
499 if (idx == wdev->wext.default_key)
500 wdev->wext.default_key = -1;
501 else if (idx == wdev->wext.default_mgmt_key)
502 wdev->wext.default_mgmt_key = -1;
503 }
504
505 if (!err && rejoin)
506 err = cfg80211_ibss_wext_join(rdev, wdev);
507
508 return err;
509 }
510
511 if (addr)
512 tx_key = false;
513
514 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
515 return -EINVAL;
516
517 err = 0;
518 if (wdev->connected ||
519 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
520 wdev->u.ibss.current_bss))
521 err = rdev_add_key(rdev, dev, -1, idx, pairwise, addr, params);
522 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
523 params->cipher != WLAN_CIPHER_SUITE_WEP104)
524 return -EINVAL;
525 if (err)
526 return err;
527
528 /*
529 * We only need to store WEP keys, since they're the only keys that
530 * can be set before a connection is established and persist after
531 * disconnecting.
532 */
533 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
534 params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
535 wdev->wext.keys->params[idx] = *params;
536 memcpy(wdev->wext.keys->data[idx],
537 params->key, params->key_len);
538 wdev->wext.keys->params[idx].key =
539 wdev->wext.keys->data[idx];
540 }
541
542 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
543 params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
544 (tx_key || (!addr && wdev->wext.default_key == -1))) {
545 if (wdev->connected ||
546 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
547 wdev->u.ibss.current_bss)) {
548 /*
549 * If we are getting a new TX key from not having
550 * had one before we need to join a new IBSS with
551 * the privacy bit set.
552 */
553 if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
554 wdev->wext.default_key == -1) {
555 cfg80211_leave_ibss(rdev, wdev->netdev, true);
556 rejoin = true;
557 }
558 err = rdev_set_default_key(rdev, dev, -1, idx, true,
559 true);
560 }
561 if (!err) {
562 wdev->wext.default_key = idx;
563 if (rejoin)
564 err = cfg80211_ibss_wext_join(rdev, wdev);
565 }
566 return err;
567 }
568
569 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
570 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
571 if (wdev->connected ||
572 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
573 wdev->u.ibss.current_bss))
574 err = rdev_set_default_mgmt_key(rdev, dev, -1, idx);
575 if (!err)
576 wdev->wext.default_mgmt_key = idx;
577 return err;
578 }
579
580 return 0;
581 }
582
583 static int cfg80211_wext_siwencode(struct net_device *dev,
584 struct iw_request_info *info,
585 union iwreq_data *wrqu, char *keybuf)
586 {
587 struct iw_point *erq = &wrqu->encoding;
588 struct wireless_dev *wdev = dev->ieee80211_ptr;
589 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
590 int idx, err;
591 bool remove = false;
592 struct key_params params;
593
594 if (wdev->iftype != NL80211_IFTYPE_STATION &&
595 wdev->iftype != NL80211_IFTYPE_ADHOC)
596 return -EOPNOTSUPP;
597
598 /* no use -- only MFP (set_default_mgmt_key) is optional */
599 if (!rdev->ops->del_key ||
600 !rdev->ops->add_key ||
601 !rdev->ops->set_default_key)
602 return -EOPNOTSUPP;
603
604 wiphy_lock(&rdev->wiphy);
605 if (wdev->valid_links) {
606 err = -EOPNOTSUPP;
607 goto out;
608 }
609
610 idx = erq->flags & IW_ENCODE_INDEX;
611 if (idx == 0) {
612 idx = wdev->wext.default_key;
613 if (idx < 0)
614 idx = 0;
615 } else if (idx < 1 || idx > 4) {
616 err = -EINVAL;
617 goto out;
618 } else {
619 idx--;
620 }
621
622 if (erq->flags & IW_ENCODE_DISABLED)
623 remove = true;
624 else if (erq->length == 0) {
625 /* No key data - just set the default TX key index */
626 err = 0;
627 if (wdev->connected ||
628 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
629 wdev->u.ibss.current_bss))
630 err = rdev_set_default_key(rdev, dev, -1, idx, true,
631 true);
632 if (!err)
633 wdev->wext.default_key = idx;
634 goto out;
635 }
636
637 memset(¶ms, 0, sizeof(params));
638 params.key = keybuf;
639 params.key_len = erq->length;
640 if (erq->length == 5) {
641 params.cipher = WLAN_CIPHER_SUITE_WEP40;
642 } else if (erq->length == 13) {
643 params.cipher = WLAN_CIPHER_SUITE_WEP104;
644 } else if (!remove) {
645 err = -EINVAL;
646 goto out;
647 }
648
649 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
650 wdev->wext.default_key == -1,
651 idx, ¶ms);
652 out:
653 wiphy_unlock(&rdev->wiphy);
654
655 return err;
656 }
657
658 static int cfg80211_wext_siwencodeext(struct net_device *dev,
659 struct iw_request_info *info,
660 union iwreq_data *wrqu, char *extra)
661 {
662 struct iw_point *erq = &wrqu->encoding;
663 struct wireless_dev *wdev = dev->ieee80211_ptr;
664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
665 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
666 const u8 *addr;
667 int idx;
668 bool remove = false;
669 struct key_params params;
670 u32 cipher;
671 int ret;
672
673 if (wdev->iftype != NL80211_IFTYPE_STATION &&
674 wdev->iftype != NL80211_IFTYPE_ADHOC)
675 return -EOPNOTSUPP;
676
677 /* no use -- only MFP (set_default_mgmt_key) is optional */
678 if (!rdev->ops->del_key ||
679 !rdev->ops->add_key ||
680 !rdev->ops->set_default_key)
681 return -EOPNOTSUPP;
682
683 if (wdev->valid_links)
684 return -EOPNOTSUPP;
685
686 switch (ext->alg) {
687 case IW_ENCODE_ALG_NONE:
688 remove = true;
689 cipher = 0;
690 break;
691 case IW_ENCODE_ALG_WEP:
692 if (ext->key_len == 5)
693 cipher = WLAN_CIPHER_SUITE_WEP40;
694 else if (ext->key_len == 13)
695 cipher = WLAN_CIPHER_SUITE_WEP104;
696 else
697 return -EINVAL;
698 break;
699 case IW_ENCODE_ALG_TKIP:
700 cipher = WLAN_CIPHER_SUITE_TKIP;
701 break;
702 case IW_ENCODE_ALG_CCMP:
703 cipher = WLAN_CIPHER_SUITE_CCMP;
704 break;
705 case IW_ENCODE_ALG_AES_CMAC:
706 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
707 break;
708 default:
709 return -EOPNOTSUPP;
710 }
711
712 if (erq->flags & IW_ENCODE_DISABLED)
713 remove = true;
714
715 idx = erq->flags & IW_ENCODE_INDEX;
716 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
717 if (idx < 4 || idx > 5) {
718 idx = wdev->wext.default_mgmt_key;
719 if (idx < 0)
720 return -EINVAL;
721 } else
722 idx--;
723 } else {
724 if (idx < 1 || idx > 4) {
725 idx = wdev->wext.default_key;
726 if (idx < 0)
727 return -EINVAL;
728 } else
729 idx--;
730 }
731
732 addr = ext->addr.sa_data;
733 if (is_broadcast_ether_addr(addr))
734 addr = NULL;
735
736 memset(¶ms, 0, sizeof(params));
737 params.key = ext->key;
738 params.key_len = ext->key_len;
739 params.cipher = cipher;
740
741 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
742 params.seq = ext->rx_seq;
743 params.seq_len = 6;
744 }
745
746 wiphy_lock(wdev->wiphy);
747 ret = cfg80211_set_encryption(
748 rdev, dev,
749 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
750 addr, remove,
751 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
752 idx, ¶ms);
753 wiphy_unlock(wdev->wiphy);
754
755 return ret;
756 }
757
758 static int cfg80211_wext_giwencode(struct net_device *dev,
759 struct iw_request_info *info,
760 union iwreq_data *wrqu, char *keybuf)
761 {
762 struct iw_point *erq = &wrqu->encoding;
763 struct wireless_dev *wdev = dev->ieee80211_ptr;
764 int idx;
765
766 if (wdev->iftype != NL80211_IFTYPE_STATION &&
767 wdev->iftype != NL80211_IFTYPE_ADHOC)
768 return -EOPNOTSUPP;
769
770 idx = erq->flags & IW_ENCODE_INDEX;
771 if (idx == 0) {
772 idx = wdev->wext.default_key;
773 if (idx < 0)
774 idx = 0;
775 } else if (idx < 1 || idx > 4)
776 return -EINVAL;
777 else
778 idx--;
779
780 erq->flags = idx + 1;
781
782 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
783 erq->flags |= IW_ENCODE_DISABLED;
784 erq->length = 0;
785 return 0;
786 }
787
788 erq->length = min_t(size_t, erq->length,
789 wdev->wext.keys->params[idx].key_len);
790 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
791 erq->flags |= IW_ENCODE_ENABLED;
792
793 return 0;
794 }
795
796 static int cfg80211_wext_siwfreq(struct net_device *dev,
797 struct iw_request_info *info,
798 union iwreq_data *wrqu, char *extra)
799 {
800 struct iw_freq *wextfreq = &wrqu->freq;
801 struct wireless_dev *wdev = dev->ieee80211_ptr;
802 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
803 struct cfg80211_chan_def chandef = {
804 .width = NL80211_CHAN_WIDTH_20_NOHT,
805 };
806 int freq, ret;
807
808 wiphy_lock(&rdev->wiphy);
809
810 switch (wdev->iftype) {
811 case NL80211_IFTYPE_STATION:
812 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
813 break;
814 case NL80211_IFTYPE_ADHOC:
815 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
816 break;
817 case NL80211_IFTYPE_MONITOR:
818 freq = cfg80211_wext_freq(wextfreq);
819 if (freq < 0) {
820 ret = freq;
821 break;
822 }
823 if (freq == 0) {
824 ret = -EINVAL;
825 break;
826 }
827 chandef.center_freq1 = freq;
828 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
829 if (!chandef.chan) {
830 ret = -EINVAL;
831 break;
832 }
833 ret = cfg80211_set_monitor_channel(rdev, &chandef);
834 break;
835 case NL80211_IFTYPE_MESH_POINT:
836 freq = cfg80211_wext_freq(wextfreq);
837 if (freq < 0) {
838 ret = freq;
839 break;
840 }
841 if (freq == 0) {
842 ret = -EINVAL;
843 break;
844 }
845 chandef.center_freq1 = freq;
846 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
847 if (!chandef.chan) {
848 ret = -EINVAL;
849 break;
850 }
851 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
852 break;
853 default:
854 ret = -EOPNOTSUPP;
855 break;
856 }
857
858 wiphy_unlock(&rdev->wiphy);
859
860 return ret;
861 }
862
863 static int cfg80211_wext_giwfreq(struct net_device *dev,
864 struct iw_request_info *info,
865 union iwreq_data *wrqu, char *extra)
866 {
867 struct iw_freq *freq = &wrqu->freq;
868 struct wireless_dev *wdev = dev->ieee80211_ptr;
869 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
870 struct cfg80211_chan_def chandef = {};
871 int ret;
872
873 wiphy_lock(&rdev->wiphy);
874 switch (wdev->iftype) {
875 case NL80211_IFTYPE_STATION:
876 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
877 break;
878 case NL80211_IFTYPE_ADHOC:
879 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
880 break;
881 case NL80211_IFTYPE_MONITOR:
882 if (!rdev->ops->get_channel) {
883 ret = -EINVAL;
884 break;
885 }
886
887 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
888 if (ret)
889 break;
890 freq->m = chandef.chan->center_freq;
891 freq->e = 6;
892 ret = 0;
893 break;
894 default:
895 ret = -EINVAL;
896 break;
897 }
898
899 wiphy_unlock(&rdev->wiphy);
900
901 return ret;
902 }
903
904 static int cfg80211_wext_siwtxpower(struct net_device *dev,
905 struct iw_request_info *info,
906 union iwreq_data *data, char *extra)
907 {
908 struct wireless_dev *wdev = dev->ieee80211_ptr;
909 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
910 enum nl80211_tx_power_setting type;
911 int dbm = 0;
912 int ret;
913
914 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
915 return -EINVAL;
916 if (data->txpower.flags & IW_TXPOW_RANGE)
917 return -EINVAL;
918
919 if (!rdev->ops->set_tx_power)
920 return -EOPNOTSUPP;
921
922 /* only change when not disabling */
923 if (!data->txpower.disabled) {
924 rfkill_set_sw_state(rdev->wiphy.rfkill, false);
925
926 if (data->txpower.fixed) {
927 /*
928 * wext doesn't support negative values, see
929 * below where it's for automatic
930 */
931 if (data->txpower.value < 0)
932 return -EINVAL;
933 dbm = data->txpower.value;
934 type = NL80211_TX_POWER_FIXED;
935 /* TODO: do regulatory check! */
936 } else {
937 /*
938 * Automatic power level setting, max being the value
939 * passed in from userland.
940 */
941 if (data->txpower.value < 0) {
942 type = NL80211_TX_POWER_AUTOMATIC;
943 } else {
944 dbm = data->txpower.value;
945 type = NL80211_TX_POWER_LIMITED;
946 }
947 }
948 } else {
949 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
950 schedule_work(&rdev->rfkill_block);
951 return 0;
952 }
953
954 wiphy_lock(&rdev->wiphy);
955 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
956 wiphy_unlock(&rdev->wiphy);
957
958 return ret;
959 }
960
961 static int cfg80211_wext_giwtxpower(struct net_device *dev,
962 struct iw_request_info *info,
963 union iwreq_data *data, char *extra)
964 {
965 struct wireless_dev *wdev = dev->ieee80211_ptr;
966 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
967 int err, val;
968
969 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
970 return -EINVAL;
971 if (data->txpower.flags & IW_TXPOW_RANGE)
972 return -EINVAL;
973
974 if (!rdev->ops->get_tx_power)
975 return -EOPNOTSUPP;
976
977 wiphy_lock(&rdev->wiphy);
978 err = rdev_get_tx_power(rdev, wdev, &val);
979 wiphy_unlock(&rdev->wiphy);
980 if (err)
981 return err;
982
983 /* well... oh well */
984 data->txpower.fixed = 1;
985 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
986 data->txpower.value = val;
987 data->txpower.flags = IW_TXPOW_DBM;
988
989 return 0;
990 }
991
992 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
993 s32 auth_alg)
994 {
995 int nr_alg = 0;
996
997 if (!auth_alg)
998 return -EINVAL;
999
1000 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
1001 IW_AUTH_ALG_SHARED_KEY |
1002 IW_AUTH_ALG_LEAP))
1003 return -EINVAL;
1004
1005 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
1006 nr_alg++;
1007 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1008 }
1009
1010 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
1011 nr_alg++;
1012 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1013 }
1014
1015 if (auth_alg & IW_AUTH_ALG_LEAP) {
1016 nr_alg++;
1017 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
1018 }
1019
1020 if (nr_alg > 1)
1021 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1022
1023 return 0;
1024 }
1025
1026 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
1027 {
1028 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
1029 IW_AUTH_WPA_VERSION_WPA2|
1030 IW_AUTH_WPA_VERSION_DISABLED))
1031 return -EINVAL;
1032
1033 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
1034 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
1035 IW_AUTH_WPA_VERSION_WPA2)))
1036 return -EINVAL;
1037
1038 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
1039 wdev->wext.connect.crypto.wpa_versions &=
1040 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
1041
1042 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
1043 wdev->wext.connect.crypto.wpa_versions |=
1044 NL80211_WPA_VERSION_1;
1045
1046 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
1047 wdev->wext.connect.crypto.wpa_versions |=
1048 NL80211_WPA_VERSION_2;
1049
1050 return 0;
1051 }
1052
1053 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
1054 {
1055 if (cipher & IW_AUTH_CIPHER_WEP40)
1056 wdev->wext.connect.crypto.cipher_group =
1057 WLAN_CIPHER_SUITE_WEP40;
1058 else if (cipher & IW_AUTH_CIPHER_WEP104)
1059 wdev->wext.connect.crypto.cipher_group =
1060 WLAN_CIPHER_SUITE_WEP104;
1061 else if (cipher & IW_AUTH_CIPHER_TKIP)
1062 wdev->wext.connect.crypto.cipher_group =
1063 WLAN_CIPHER_SUITE_TKIP;
1064 else if (cipher & IW_AUTH_CIPHER_CCMP)
1065 wdev->wext.connect.crypto.cipher_group =
1066 WLAN_CIPHER_SUITE_CCMP;
1067 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1068 wdev->wext.connect.crypto.cipher_group =
1069 WLAN_CIPHER_SUITE_AES_CMAC;
1070 else if (cipher & IW_AUTH_CIPHER_NONE)
1071 wdev->wext.connect.crypto.cipher_group = 0;
1072 else
1073 return -EINVAL;
1074
1075 return 0;
1076 }
1077
1078 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1079 {
1080 int nr_ciphers = 0;
1081 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1082
1083 if (cipher & IW_AUTH_CIPHER_WEP40) {
1084 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1085 nr_ciphers++;
1086 }
1087
1088 if (cipher & IW_AUTH_CIPHER_WEP104) {
1089 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1090 nr_ciphers++;
1091 }
1092
1093 if (cipher & IW_AUTH_CIPHER_TKIP) {
1094 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1095 nr_ciphers++;
1096 }
1097
1098 if (cipher & IW_AUTH_CIPHER_CCMP) {
1099 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1100 nr_ciphers++;
1101 }
1102
1103 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1104 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1105 nr_ciphers++;
1106 }
1107
1108 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1109
1110 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1111
1112 return 0;
1113 }
1114
1115
1116 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1117 {
1118 int nr_akm_suites = 0;
1119
1120 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1121 IW_AUTH_KEY_MGMT_PSK))
1122 return -EINVAL;
1123
1124 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1125 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1126 WLAN_AKM_SUITE_8021X;
1127 nr_akm_suites++;
1128 }
1129
1130 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1131 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1132 WLAN_AKM_SUITE_PSK;
1133 nr_akm_suites++;
1134 }
1135
1136 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1137
1138 return 0;
1139 }
1140
1141 static int cfg80211_wext_siwauth(struct net_device *dev,
1142 struct iw_request_info *info,
1143 union iwreq_data *wrqu, char *extra)
1144 {
1145 struct iw_param *data = &wrqu->param;
1146 struct wireless_dev *wdev = dev->ieee80211_ptr;
1147
1148 if (wdev->iftype != NL80211_IFTYPE_STATION)
1149 return -EOPNOTSUPP;
1150
1151 switch (data->flags & IW_AUTH_INDEX) {
1152 case IW_AUTH_PRIVACY_INVOKED:
1153 wdev->wext.connect.privacy = data->value;
1154 return 0;
1155 case IW_AUTH_WPA_VERSION:
1156 return cfg80211_set_wpa_version(wdev, data->value);
1157 case IW_AUTH_CIPHER_GROUP:
1158 return cfg80211_set_cipher_group(wdev, data->value);
1159 case IW_AUTH_KEY_MGMT:
1160 return cfg80211_set_key_mgt(wdev, data->value);
1161 case IW_AUTH_CIPHER_PAIRWISE:
1162 return cfg80211_set_cipher_pairwise(wdev, data->value);
1163 case IW_AUTH_80211_AUTH_ALG:
1164 return cfg80211_set_auth_alg(wdev, data->value);
1165 case IW_AUTH_WPA_ENABLED:
1166 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1167 case IW_AUTH_DROP_UNENCRYPTED:
1168 case IW_AUTH_MFP:
1169 return 0;
1170 default:
1171 return -EOPNOTSUPP;
1172 }
1173 }
1174
1175 static int cfg80211_wext_giwauth(struct net_device *dev,
1176 struct iw_request_info *info,
1177 union iwreq_data *wrqu, char *extra)
1178 {
1179 /* XXX: what do we need? */
1180
1181 return -EOPNOTSUPP;
1182 }
1183
1184 static int cfg80211_wext_siwpower(struct net_device *dev,
1185 struct iw_request_info *info,
1186 union iwreq_data *wrqu, char *extra)
1187 {
1188 struct iw_param *wrq = &wrqu->power;
1189 struct wireless_dev *wdev = dev->ieee80211_ptr;
1190 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1191 bool ps;
1192 int timeout = wdev->ps_timeout;
1193 int err;
1194
1195 if (wdev->iftype != NL80211_IFTYPE_STATION)
1196 return -EINVAL;
1197
1198 if (!rdev->ops->set_power_mgmt)
1199 return -EOPNOTSUPP;
1200
1201 if (wrq->disabled) {
1202 ps = false;
1203 } else {
1204 switch (wrq->flags & IW_POWER_MODE) {
1205 case IW_POWER_ON: /* If not specified */
1206 case IW_POWER_MODE: /* If set all mask */
1207 case IW_POWER_ALL_R: /* If explicitely state all */
1208 ps = true;
1209 break;
1210 default: /* Otherwise we ignore */
1211 return -EINVAL;
1212 }
1213
1214 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1215 return -EINVAL;
1216
1217 if (wrq->flags & IW_POWER_TIMEOUT)
1218 timeout = wrq->value / 1000;
1219 }
1220
1221 wiphy_lock(&rdev->wiphy);
1222 err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1223 wiphy_unlock(&rdev->wiphy);
1224 if (err)
1225 return err;
1226
1227 wdev->ps = ps;
1228 wdev->ps_timeout = timeout;
1229
1230 return 0;
1231
1232 }
1233
1234 static int cfg80211_wext_giwpower(struct net_device *dev,
1235 struct iw_request_info *info,
1236 union iwreq_data *wrqu, char *extra)
1237 {
1238 struct iw_param *wrq = &wrqu->power;
1239 struct wireless_dev *wdev = dev->ieee80211_ptr;
1240
1241 wrq->disabled = !wdev->ps;
1242
1243 return 0;
1244 }
1245
1246 static int cfg80211_wext_siwrate(struct net_device *dev,
1247 struct iw_request_info *info,
1248 union iwreq_data *wrqu, char *extra)
1249 {
1250 struct iw_param *rate = &wrqu->bitrate;
1251 struct wireless_dev *wdev = dev->ieee80211_ptr;
1252 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1253 struct cfg80211_bitrate_mask mask;
1254 u32 fixed, maxrate;
1255 struct ieee80211_supported_band *sband;
1256 int band, ridx, ret;
1257 bool match = false;
1258
1259 if (!rdev->ops->set_bitrate_mask)
1260 return -EOPNOTSUPP;
1261
1262 memset(&mask, 0, sizeof(mask));
1263 fixed = 0;
1264 maxrate = (u32)-1;
1265
1266 if (rate->value < 0) {
1267 /* nothing */
1268 } else if (rate->fixed) {
1269 fixed = rate->value / 100000;
1270 } else {
1271 maxrate = rate->value / 100000;
1272 }
1273
1274 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1275 sband = wdev->wiphy->bands[band];
1276 if (sband == NULL)
1277 continue;
1278 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1279 struct ieee80211_rate *srate = &sband->bitrates[ridx];
1280 if (fixed == srate->bitrate) {
1281 mask.control[band].legacy = 1 << ridx;
1282 match = true;
1283 break;
1284 }
1285 if (srate->bitrate <= maxrate) {
1286 mask.control[band].legacy |= 1 << ridx;
1287 match = true;
1288 }
1289 }
1290 }
1291
1292 if (!match)
1293 return -EINVAL;
1294
1295 wiphy_lock(&rdev->wiphy);
1296 if (dev->ieee80211_ptr->valid_links)
1297 ret = -EOPNOTSUPP;
1298 else
1299 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask);
1300 wiphy_unlock(&rdev->wiphy);
1301
1302 return ret;
1303 }
1304
1305 static int cfg80211_wext_giwrate(struct net_device *dev,
1306 struct iw_request_info *info,
1307 union iwreq_data *wrqu, char *extra)
1308 {
1309 struct iw_param *rate = &wrqu->bitrate;
1310 struct wireless_dev *wdev = dev->ieee80211_ptr;
1311 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1312 struct station_info sinfo = {};
1313 u8 addr[ETH_ALEN];
1314 int err;
1315
1316 if (wdev->iftype != NL80211_IFTYPE_STATION)
1317 return -EOPNOTSUPP;
1318
1319 if (!rdev->ops->get_station)
1320 return -EOPNOTSUPP;
1321
1322 err = 0;
1323 if (!wdev->valid_links && wdev->links[0].client.current_bss)
1324 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid,
1325 ETH_ALEN);
1326 else
1327 err = -EOPNOTSUPP;
1328 if (err)
1329 return err;
1330
1331 wiphy_lock(&rdev->wiphy);
1332 err = rdev_get_station(rdev, dev, addr, &sinfo);
1333 wiphy_unlock(&rdev->wiphy);
1334 if (err)
1335 return err;
1336
1337 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1338 err = -EOPNOTSUPP;
1339 goto free;
1340 }
1341
1342 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1343
1344 free:
1345 cfg80211_sinfo_release_content(&sinfo);
1346 return err;
1347 }
1348
1349 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1350 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1351 {
1352 struct wireless_dev *wdev = dev->ieee80211_ptr;
1353 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1354 /* we are under RTNL - globally locked - so can use static structs */
1355 static struct iw_statistics wstats;
1356 static struct station_info sinfo = {};
1357 u8 bssid[ETH_ALEN];
1358 int ret;
1359
1360 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1361 return NULL;
1362
1363 if (!rdev->ops->get_station)
1364 return NULL;
1365
1366 /* Grab BSSID of current BSS, if any */
1367 wiphy_lock(&rdev->wiphy);
1368 if (wdev->valid_links || !wdev->links[0].client.current_bss) {
1369 wiphy_unlock(&rdev->wiphy);
1370 return NULL;
1371 }
1372 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN);
1373
1374 memset(&sinfo, 0, sizeof(sinfo));
1375
1376 ret = rdev_get_station(rdev, dev, bssid, &sinfo);
1377 wiphy_unlock(&rdev->wiphy);
1378
1379 if (ret)
1380 return NULL;
1381
1382 memset(&wstats, 0, sizeof(wstats));
1383
1384 switch (rdev->wiphy.signal_type) {
1385 case CFG80211_SIGNAL_TYPE_MBM:
1386 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1387 int sig = sinfo.signal;
1388 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1389 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1390 wstats.qual.updated |= IW_QUAL_DBM;
1391 wstats.qual.level = sig;
1392 if (sig < -110)
1393 sig = -110;
1394 else if (sig > -40)
1395 sig = -40;
1396 wstats.qual.qual = sig + 110;
1397 break;
1398 }
1399 fallthrough;
1400 case CFG80211_SIGNAL_TYPE_UNSPEC:
1401 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1402 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1403 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1404 wstats.qual.level = sinfo.signal;
1405 wstats.qual.qual = sinfo.signal;
1406 break;
1407 }
1408 fallthrough;
1409 default:
1410 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1411 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1412 }
1413
1414 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1415 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1416 wstats.discard.misc = sinfo.rx_dropped_misc;
1417 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1418 wstats.discard.retries = sinfo.tx_failed;
1419
1420 cfg80211_sinfo_release_content(&sinfo);
1421
1422 return &wstats;
1423 }
1424
1425 static int cfg80211_wext_siwap(struct net_device *dev,
1426 struct iw_request_info *info,
1427 union iwreq_data *wrqu, char *extra)
1428 {
1429 struct sockaddr *ap_addr = &wrqu->ap_addr;
1430 struct wireless_dev *wdev = dev->ieee80211_ptr;
1431 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1432 int ret;
1433
1434 wiphy_lock(&rdev->wiphy);
1435 switch (wdev->iftype) {
1436 case NL80211_IFTYPE_ADHOC:
1437 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1438 break;
1439 case NL80211_IFTYPE_STATION:
1440 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1441 break;
1442 default:
1443 ret = -EOPNOTSUPP;
1444 break;
1445 }
1446 wiphy_unlock(&rdev->wiphy);
1447
1448 return ret;
1449 }
1450
1451 static int cfg80211_wext_giwap(struct net_device *dev,
1452 struct iw_request_info *info,
1453 union iwreq_data *wrqu, char *extra)
1454 {
1455 struct sockaddr *ap_addr = &wrqu->ap_addr;
1456 struct wireless_dev *wdev = dev->ieee80211_ptr;
1457 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1458 int ret;
1459
1460 wiphy_lock(&rdev->wiphy);
1461 switch (wdev->iftype) {
1462 case NL80211_IFTYPE_ADHOC:
1463 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1464 break;
1465 case NL80211_IFTYPE_STATION:
1466 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1467 break;
1468 default:
1469 ret = -EOPNOTSUPP;
1470 break;
1471 }
1472 wiphy_unlock(&rdev->wiphy);
1473
1474 return ret;
1475 }
1476
1477 static int cfg80211_wext_siwessid(struct net_device *dev,
1478 struct iw_request_info *info,
1479 union iwreq_data *wrqu, char *ssid)
1480 {
1481 struct iw_point *data = &wrqu->data;
1482 struct wireless_dev *wdev = dev->ieee80211_ptr;
1483 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1484 int ret;
1485
1486 wiphy_lock(&rdev->wiphy);
1487 switch (wdev->iftype) {
1488 case NL80211_IFTYPE_ADHOC:
1489 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1490 break;
1491 case NL80211_IFTYPE_STATION:
1492 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1493 break;
1494 default:
1495 ret = -EOPNOTSUPP;
1496 break;
1497 }
1498 wiphy_unlock(&rdev->wiphy);
1499
1500 return ret;
1501 }
1502
1503 static int cfg80211_wext_giwessid(struct net_device *dev,
1504 struct iw_request_info *info,
1505 union iwreq_data *wrqu, char *ssid)
1506 {
1507 struct iw_point *data = &wrqu->data;
1508 struct wireless_dev *wdev = dev->ieee80211_ptr;
1509 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1510 int ret;
1511
1512 data->flags = 0;
1513 data->length = 0;
1514
1515 wiphy_lock(&rdev->wiphy);
1516 switch (wdev->iftype) {
1517 case NL80211_IFTYPE_ADHOC:
1518 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1519 break;
1520 case NL80211_IFTYPE_STATION:
1521 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1522 break;
1523 default:
1524 ret = -EOPNOTSUPP;
1525 break;
1526 }
1527 wiphy_unlock(&rdev->wiphy);
1528
1529 return ret;
1530 }
1531
1532 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1533 struct iw_request_info *info,
1534 union iwreq_data *wrqu, char *extra)
1535 {
1536 struct wireless_dev *wdev = dev->ieee80211_ptr;
1537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1538 struct cfg80211_pmksa cfg_pmksa;
1539 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1540 int ret;
1541
1542 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1543
1544 if (wdev->iftype != NL80211_IFTYPE_STATION)
1545 return -EINVAL;
1546
1547 cfg_pmksa.bssid = pmksa->bssid.sa_data;
1548 cfg_pmksa.pmkid = pmksa->pmkid;
1549
1550 wiphy_lock(&rdev->wiphy);
1551 switch (pmksa->cmd) {
1552 case IW_PMKSA_ADD:
1553 if (!rdev->ops->set_pmksa) {
1554 ret = -EOPNOTSUPP;
1555 break;
1556 }
1557
1558 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1559 break;
1560 case IW_PMKSA_REMOVE:
1561 if (!rdev->ops->del_pmksa) {
1562 ret = -EOPNOTSUPP;
1563 break;
1564 }
1565
1566 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1567 break;
1568 case IW_PMKSA_FLUSH:
1569 if (!rdev->ops->flush_pmksa) {
1570 ret = -EOPNOTSUPP;
1571 break;
1572 }
1573
1574 ret = rdev_flush_pmksa(rdev, dev);
1575 break;
1576 default:
1577 ret = -EOPNOTSUPP;
1578 break;
1579 }
1580 wiphy_unlock(&rdev->wiphy);
1581
1582 return ret;
1583 }
1584
1585 static const iw_handler cfg80211_handlers[] = {
1586 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
1587 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq),
1588 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq),
1589 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode),
1590 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode),
1591 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange),
1592 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap),
1593 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap),
1594 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme),
1595 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan),
1596 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan),
1597 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid),
1598 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid),
1599 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate),
1600 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate),
1601 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts),
1602 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts),
1603 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag),
1604 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag),
1605 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower),
1606 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower),
1607 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry),
1608 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
1609 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode),
1610 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode),
1611 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower),
1612 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower),
1613 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie),
1614 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth),
1615 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth),
1616 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext),
1617 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa),
1618 };
1619
1620 const struct iw_handler_def cfg80211_wext_handler = {
1621 .num_standard = ARRAY_SIZE(cfg80211_handlers),
1622 .standard = cfg80211_handlers,
1623 .get_wireless_stats = cfg80211_wireless_stats,
1624 };
1625
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