projects/linux·blob master · refs

1522 lines · 38.8 KiB

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 <[email protected]>
10 * Copyright (C) 2019-2023, 2026 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 <linux/string.h>
20#include <net/iw_handler.h>
21#include <net/cfg80211.h>
22#include <net/cfg80211-wext.h>
23#include "wext-compat.h"
24#include "core.h"
25#include "rdev-ops.h"
26
27int cfg80211_wext_giwname(struct net_device *dev,
28 struct iw_request_info *info,
29 union iwreq_data *wrqu, char *extra)
30{
31 strscpy(wrqu->name, "IEEE 802.11");
32 return 0;
33}
34
35int 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
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 guard(wiphy)(wdev->wiphy);
66
67 return cfg80211_change_iface(rdev, dev, type, &vifparams);
68}
69
70int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
71 union iwreq_data *wrqu, char *extra)
72{
73 __u32 *mode = &wrqu->mode;
74 struct wireless_dev *wdev = dev->ieee80211_ptr;
75
76 if (!wdev)
77 return -EOPNOTSUPP;
78
79 switch (wdev->iftype) {
80 case NL80211_IFTYPE_AP:
81 *mode = IW_MODE_MASTER;
82 break;
83 case NL80211_IFTYPE_STATION:
84 *mode = IW_MODE_INFRA;
85 break;
86 case NL80211_IFTYPE_ADHOC:
87 *mode = IW_MODE_ADHOC;
88 break;
89 case NL80211_IFTYPE_MONITOR:
90 *mode = IW_MODE_MONITOR;
91 break;
92 case NL80211_IFTYPE_WDS:
93 *mode = IW_MODE_REPEAT;
94 break;
95 case NL80211_IFTYPE_AP_VLAN:
96 *mode = IW_MODE_SECOND; /* FIXME */
97 break;
98 default:
99 *mode = IW_MODE_AUTO;
100 break;
101 }
102 return 0;
103}
104
105
106int cfg80211_wext_giwrange(struct net_device *dev,
107 struct iw_request_info *info,
108 union iwreq_data *wrqu, char *extra)
109{
110 struct iw_point *data = &wrqu->data;
111 struct wireless_dev *wdev = dev->ieee80211_ptr;
112 struct iw_range *range = (struct iw_range *) extra;
113 enum nl80211_band band;
114 int i, c = 0;
115
116 if (!wdev)
117 return -EOPNOTSUPP;
118
119 data->length = sizeof(struct iw_range);
120 memset(range, 0, sizeof(struct iw_range));
121
122 range->we_version_compiled = WIRELESS_EXT;
123 range->we_version_source = 21;
124 range->retry_capa = IW_RETRY_LIMIT;
125 range->retry_flags = IW_RETRY_LIMIT;
126 range->min_retry = 0;
127 range->max_retry = 255;
128 range->min_rts = 0;
129 range->max_rts = 2347;
130 range->min_frag = 256;
131 range->max_frag = 2346;
132
133 range->max_encoding_tokens = 4;
134
135 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
136
137 switch (wdev->wiphy->signal_type) {
138 case CFG80211_SIGNAL_TYPE_NONE:
139 break;
140 case CFG80211_SIGNAL_TYPE_MBM:
141 range->max_qual.level = (u8)-110;
142 range->max_qual.qual = 70;
143 range->avg_qual.qual = 35;
144 range->max_qual.updated |= IW_QUAL_DBM;
145 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
146 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
147 break;
148 case CFG80211_SIGNAL_TYPE_UNSPEC:
149 range->max_qual.level = 100;
150 range->max_qual.qual = 100;
151 range->avg_qual.qual = 50;
152 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
153 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
154 break;
155 }
156
157 range->avg_qual.level = range->max_qual.level / 2;
158 range->avg_qual.noise = range->max_qual.noise / 2;
159 range->avg_qual.updated = range->max_qual.updated;
160
161 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
162 switch (wdev->wiphy->cipher_suites[i]) {
163 case WLAN_CIPHER_SUITE_TKIP:
164 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
165 IW_ENC_CAPA_WPA);
166 break;
167
168 case WLAN_CIPHER_SUITE_CCMP:
169 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
170 IW_ENC_CAPA_WPA2);
171 break;
172
173 case WLAN_CIPHER_SUITE_WEP40:
174 range->encoding_size[range->num_encoding_sizes++] =
175 WLAN_KEY_LEN_WEP40;
176 break;
177
178 case WLAN_CIPHER_SUITE_WEP104:
179 range->encoding_size[range->num_encoding_sizes++] =
180 WLAN_KEY_LEN_WEP104;
181 break;
182 }
183 }
184
185 for (band = 0; band < NUM_NL80211_BANDS; band ++) {
186 struct ieee80211_supported_band *sband;
187
188 sband = wdev->wiphy->bands[band];
189
190 if (!sband)
191 continue;
192
193 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
194 struct ieee80211_channel *chan = &sband->channels[i];
195
196 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
197 range->freq[c].i =
198 ieee80211_frequency_to_channel(
199 chan->center_freq);
200 range->freq[c].m = chan->center_freq;
201 range->freq[c].e = 6;
202 c++;
203 }
204 }
205 }
206 range->num_channels = c;
207 range->num_frequency = c;
208
209 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
210 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
211 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
212
213 if (wdev->wiphy->max_scan_ssids > 0)
214 range->scan_capa |= IW_SCAN_CAPA_ESSID;
215
216 return 0;
217}
218
219
220/**
221 * cfg80211_wext_freq - get wext frequency for non-"auto"
222 * @freq: the wext freq encoding
223 *
224 * Returns: a frequency, or a negative error code, or 0 for auto.
225 */
226int cfg80211_wext_freq(struct iw_freq *freq)
227{
228 /*
229 * Parse frequency - return 0 for auto and
230 * -EINVAL for impossible things.
231 */
232 if (freq->e == 0) {
233 enum nl80211_band band = NL80211_BAND_2GHZ;
234 if (freq->m < 0)
235 return 0;
236 if (freq->m > 14)
237 band = NL80211_BAND_5GHZ;
238 return ieee80211_channel_to_frequency(freq->m, band);
239 } else {
240 int i, div = 1000000;
241 for (i = 0; i < freq->e; i++)
242 div /= 10;
243 if (div <= 0)
244 return -EINVAL;
245 return freq->m / div;
246 }
247}
248
249int cfg80211_wext_siwrts(struct net_device *dev,
250 struct iw_request_info *info,
251 union iwreq_data *wrqu, char *extra)
252{
253 struct iw_param *rts = &wrqu->rts;
254 struct wireless_dev *wdev = dev->ieee80211_ptr;
255 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
256 u32 orts = wdev->wiphy->rts_threshold;
257 int err;
258
259 guard(wiphy)(&rdev->wiphy);
260 if (rts->disabled || !rts->fixed)
261 wdev->wiphy->rts_threshold = (u32) -1;
262 else if (rts->value < 0)
263 return -EINVAL;
264 else
265 wdev->wiphy->rts_threshold = rts->value;
266
267 err = rdev_set_wiphy_params(rdev, -1, WIPHY_PARAM_RTS_THRESHOLD);
268 if (err)
269 wdev->wiphy->rts_threshold = orts;
270 return err;
271}
272
273int cfg80211_wext_giwrts(struct net_device *dev,
274 struct iw_request_info *info,
275 union iwreq_data *wrqu, char *extra)
276{
277 struct iw_param *rts = &wrqu->rts;
278 struct wireless_dev *wdev = dev->ieee80211_ptr;
279
280 rts->value = wdev->wiphy->rts_threshold;
281 rts->disabled = rts->value == (u32) -1;
282 rts->fixed = 1;
283
284 return 0;
285}
286
287int cfg80211_wext_siwfrag(struct net_device *dev,
288 struct iw_request_info *info,
289 union iwreq_data *wrqu, char *extra)
290{
291 struct iw_param *frag = &wrqu->frag;
292 struct wireless_dev *wdev = dev->ieee80211_ptr;
293 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
294 u32 ofrag = wdev->wiphy->frag_threshold;
295 int err;
296
297 guard(wiphy)(&rdev->wiphy);
298
299 if (frag->disabled || !frag->fixed) {
300 wdev->wiphy->frag_threshold = (u32) -1;
301 } else if (frag->value < 256) {
302 return -EINVAL;
303 } else {
304 /* Fragment length must be even, so strip LSB. */
305 wdev->wiphy->frag_threshold = frag->value & ~0x1;
306 }
307
308 err = rdev_set_wiphy_params(rdev, -1, WIPHY_PARAM_FRAG_THRESHOLD);
309 if (err)
310 wdev->wiphy->frag_threshold = ofrag;
311 return err;
312}
313
314int cfg80211_wext_giwfrag(struct net_device *dev,
315 struct iw_request_info *info,
316 union iwreq_data *wrqu, char *extra)
317{
318 struct iw_param *frag = &wrqu->frag;
319 struct wireless_dev *wdev = dev->ieee80211_ptr;
320
321 frag->value = wdev->wiphy->frag_threshold;
322 frag->disabled = frag->value == (u32) -1;
323 frag->fixed = 1;
324
325 return 0;
326}
327
328static int cfg80211_wext_siwretry(struct net_device *dev,
329 struct iw_request_info *info,
330 union iwreq_data *wrqu, char *extra)
331{
332 struct iw_param *retry = &wrqu->retry;
333 struct wireless_dev *wdev = dev->ieee80211_ptr;
334 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
335 u32 changed = 0;
336 u8 olong = wdev->wiphy->retry_long;
337 u8 oshort = wdev->wiphy->retry_short;
338 int err;
339
340 if (retry->disabled || retry->value < 1 || retry->value > 255 ||
341 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
342 return -EINVAL;
343
344 guard(wiphy)(&rdev->wiphy);
345
346 if (retry->flags & IW_RETRY_LONG) {
347 wdev->wiphy->retry_long = retry->value;
348 changed |= WIPHY_PARAM_RETRY_LONG;
349 } else if (retry->flags & IW_RETRY_SHORT) {
350 wdev->wiphy->retry_short = retry->value;
351 changed |= WIPHY_PARAM_RETRY_SHORT;
352 } else {
353 wdev->wiphy->retry_short = retry->value;
354 wdev->wiphy->retry_long = retry->value;
355 changed |= WIPHY_PARAM_RETRY_LONG;
356 changed |= WIPHY_PARAM_RETRY_SHORT;
357 }
358
359 err = rdev_set_wiphy_params(rdev, -1, changed);
360 if (err) {
361 wdev->wiphy->retry_short = oshort;
362 wdev->wiphy->retry_long = olong;
363 }
364
365 return err;
366}
367
368int cfg80211_wext_giwretry(struct net_device *dev,
369 struct iw_request_info *info,
370 union iwreq_data *wrqu, char *extra)
371{
372 struct iw_param *retry = &wrqu->retry;
373 struct wireless_dev *wdev = dev->ieee80211_ptr;
374
375 retry->disabled = 0;
376
377 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
378 /*
379 * First return short value, iwconfig will ask long value
380 * later if needed
381 */
382 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
383 retry->value = wdev->wiphy->retry_short;
384 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
385 retry->flags |= IW_RETRY_LONG;
386
387 return 0;
388 }
389
390 if (retry->flags & IW_RETRY_LONG) {
391 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
392 retry->value = wdev->wiphy->retry_long;
393 }
394
395 return 0;
396}
397
398static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
399 struct net_device *dev, bool pairwise,
400 const u8 *addr, bool remove, bool tx_key,
401 int idx, struct key_params *params)
402{
403 struct wireless_dev *wdev = dev->ieee80211_ptr;
404 int err, i;
405 bool rejoin = false;
406
407 if (wdev->valid_links)
408 return -EINVAL;
409
410 if (pairwise && !addr)
411 return -EINVAL;
412
413 /*
414 * In many cases we won't actually need this, but it's better
415 * to do it first in case the allocation fails. Don't use wext.
416 */
417 if (!wdev->wext.keys) {
418 wdev->wext.keys = kzalloc_obj(*wdev->wext.keys);
419 if (!wdev->wext.keys)
420 return -ENOMEM;
421 for (i = 0; i < 4; i++)
422 wdev->wext.keys->params[i].key =
423 wdev->wext.keys->data[i];
424 }
425
426 if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
427 wdev->iftype != NL80211_IFTYPE_STATION)
428 return -EOPNOTSUPP;
429
430 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
431 if (!wdev->connected)
432 return -ENOLINK;
433
434 if (!rdev->ops->set_default_mgmt_key)
435 return -EOPNOTSUPP;
436
437 if (idx < 4 || idx > 5)
438 return -EINVAL;
439 } else if (idx < 0 || idx > 3)
440 return -EINVAL;
441
442 if (remove) {
443 err = 0;
444 if (wdev->connected ||
445 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
446 wdev->u.ibss.current_bss)) {
447 /*
448 * If removing the current TX key, we will need to
449 * join a new IBSS without the privacy bit clear.
450 */
451 if (idx == wdev->wext.default_key &&
452 wdev->iftype == NL80211_IFTYPE_ADHOC) {
453 cfg80211_leave_ibss(rdev, wdev->netdev, true);
454 rejoin = true;
455 }
456
457 if (!cfg80211_valid_key_idx(wdev, idx, pairwise, addr))
458 err = -ENOENT;
459 else
460 err = rdev_del_key(rdev, wdev, -1, idx, pairwise,
461 addr);
462 }
463 wdev->wext.connect.privacy = false;
464 /*
465 * Applications using wireless extensions expect to be
466 * able to delete keys that don't exist, so allow that.
467 */
468 if (err == -ENOENT)
469 err = 0;
470 if (!err) {
471 if (!addr && idx < 4) {
472 memset(wdev->wext.keys->data[idx], 0,
473 sizeof(wdev->wext.keys->data[idx]));
474 wdev->wext.keys->params[idx].key_len = 0;
475 wdev->wext.keys->params[idx].cipher = 0;
476 }
477 if (idx == wdev->wext.default_key)
478 wdev->wext.default_key = -1;
479 else if (idx == wdev->wext.default_mgmt_key)
480 wdev->wext.default_mgmt_key = -1;
481 }
482
483 if (!err && rejoin)
484 err = cfg80211_ibss_wext_join(rdev, wdev);
485
486 return err;
487 }
488
489 if (addr)
490 tx_key = false;
491
492 if (cfg80211_validate_key_settings(rdev, wdev, params, idx,
493 pairwise, addr))
494 return -EINVAL;
495
496 err = 0;
497 if (wdev->connected ||
498 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
499 wdev->u.ibss.current_bss))
500 err = rdev_add_key(rdev, wdev, -1, idx, pairwise, addr, params);
501 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
502 params->cipher != WLAN_CIPHER_SUITE_WEP104)
503 return -EINVAL;
504 if (err)
505 return err;
506
507 /*
508 * We only need to store WEP keys, since they're the only keys that
509 * can be set before a connection is established and persist after
510 * disconnecting.
511 */
512 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
513 params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
514 wdev->wext.keys->params[idx] = *params;
515 memcpy(wdev->wext.keys->data[idx],
516 params->key, params->key_len);
517 wdev->wext.keys->params[idx].key =
518 wdev->wext.keys->data[idx];
519 }
520
521 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
522 params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
523 (tx_key || (!addr && wdev->wext.default_key == -1))) {
524 if (wdev->connected ||
525 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
526 wdev->u.ibss.current_bss)) {
527 /*
528 * If we are getting a new TX key from not having
529 * had one before we need to join a new IBSS with
530 * the privacy bit set.
531 */
532 if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
533 wdev->wext.default_key == -1) {
534 cfg80211_leave_ibss(rdev, wdev->netdev, true);
535 rejoin = true;
536 }
537 err = rdev_set_default_key(rdev, dev, -1, idx, true,
538 true);
539 }
540 if (!err) {
541 wdev->wext.default_key = idx;
542 if (rejoin)
543 err = cfg80211_ibss_wext_join(rdev, wdev);
544 }
545 return err;
546 }
547
548 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
549 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
550 if (wdev->connected ||
551 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
552 wdev->u.ibss.current_bss))
553 err = rdev_set_default_mgmt_key(rdev, wdev, -1, idx);
554 if (!err)
555 wdev->wext.default_mgmt_key = idx;
556 return err;
557 }
558
559 return 0;
560}
561
562static int cfg80211_wext_siwencode(struct net_device *dev,
563 struct iw_request_info *info,
564 union iwreq_data *wrqu, char *keybuf)
565{
566 struct iw_point *erq = &wrqu->encoding;
567 struct wireless_dev *wdev = dev->ieee80211_ptr;
568 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
569 struct key_params params;
570 bool remove = false;
571 int idx;
572
573 if (wdev->iftype != NL80211_IFTYPE_STATION &&
574 wdev->iftype != NL80211_IFTYPE_ADHOC)
575 return -EOPNOTSUPP;
576
577 /* no use -- only MFP (set_default_mgmt_key) is optional */
578 if (!rdev->ops->del_key ||
579 !rdev->ops->add_key ||
580 !rdev->ops->set_default_key)
581 return -EOPNOTSUPP;
582
583 guard(wiphy)(&rdev->wiphy);
584 if (wdev->valid_links)
585 return -EOPNOTSUPP;
586
587 idx = erq->flags & IW_ENCODE_INDEX;
588 if (idx == 0) {
589 idx = wdev->wext.default_key;
590 if (idx < 0)
591 idx = 0;
592 } else if (idx < 1 || idx > 4) {
593 return -EINVAL;
594 } else {
595 idx--;
596 }
597
598 if (erq->flags & IW_ENCODE_DISABLED)
599 remove = true;
600 else if (erq->length == 0) {
601 /* No key data - just set the default TX key index */
602 int err = 0;
603
604 if (wdev->connected ||
605 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
606 wdev->u.ibss.current_bss))
607 err = rdev_set_default_key(rdev, dev, -1, idx, true,
608 true);
609 if (!err)
610 wdev->wext.default_key = idx;
611 return err;
612 }
613
614 memset(&params, 0, sizeof(params));
615 params.key = keybuf;
616 params.key_len = erq->length;
617 if (erq->length == 5)
618 params.cipher = WLAN_CIPHER_SUITE_WEP40;
619 else if (erq->length == 13)
620 params.cipher = WLAN_CIPHER_SUITE_WEP104;
621 else if (!remove)
622 return -EINVAL;
623
624 return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
625 wdev->wext.default_key == -1,
626 idx, &params);
627}
628
629static int cfg80211_wext_siwencodeext(struct net_device *dev,
630 struct iw_request_info *info,
631 union iwreq_data *wrqu, char *extra)
632{
633 struct iw_point *erq = &wrqu->encoding;
634 struct wireless_dev *wdev = dev->ieee80211_ptr;
635 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
636 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
637 const u8 *addr;
638 int idx;
639 bool remove = false;
640 struct key_params params;
641 u32 cipher;
642
643 if (wdev->iftype != NL80211_IFTYPE_STATION &&
644 wdev->iftype != NL80211_IFTYPE_ADHOC)
645 return -EOPNOTSUPP;
646
647 /* no use -- only MFP (set_default_mgmt_key) is optional */
648 if (!rdev->ops->del_key ||
649 !rdev->ops->add_key ||
650 !rdev->ops->set_default_key)
651 return -EOPNOTSUPP;
652
653 if (wdev->valid_links)
654 return -EOPNOTSUPP;
655
656 switch (ext->alg) {
657 case IW_ENCODE_ALG_NONE:
658 remove = true;
659 cipher = 0;
660 break;
661 case IW_ENCODE_ALG_WEP:
662 if (ext->key_len == 5)
663 cipher = WLAN_CIPHER_SUITE_WEP40;
664 else if (ext->key_len == 13)
665 cipher = WLAN_CIPHER_SUITE_WEP104;
666 else
667 return -EINVAL;
668 break;
669 case IW_ENCODE_ALG_TKIP:
670 cipher = WLAN_CIPHER_SUITE_TKIP;
671 break;
672 case IW_ENCODE_ALG_CCMP:
673 cipher = WLAN_CIPHER_SUITE_CCMP;
674 break;
675 case IW_ENCODE_ALG_AES_CMAC:
676 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
677 break;
678 default:
679 return -EOPNOTSUPP;
680 }
681
682 if (erq->flags & IW_ENCODE_DISABLED)
683 remove = true;
684
685 idx = erq->flags & IW_ENCODE_INDEX;
686 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
687 if (idx < 5 || idx > 6) {
688 idx = wdev->wext.default_mgmt_key;
689 if (idx < 0)
690 return -EINVAL;
691 } else
692 idx--;
693 } else {
694 if (idx < 1 || idx > 4) {
695 idx = wdev->wext.default_key;
696 if (idx < 0)
697 return -EINVAL;
698 } else
699 idx--;
700 }
701
702 addr = ext->addr.sa_data;
703 if (is_broadcast_ether_addr(addr))
704 addr = NULL;
705
706 memset(&params, 0, sizeof(params));
707 params.key = ext->key;
708 params.key_len = ext->key_len;
709 params.cipher = cipher;
710
711 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
712 params.seq = ext->rx_seq;
713 params.seq_len = 6;
714 }
715
716 guard(wiphy)(wdev->wiphy);
717
718 return cfg80211_set_encryption(rdev, dev,
719 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
720 addr, remove,
721 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
722 idx, &params);
723}
724
725static int cfg80211_wext_giwencode(struct net_device *dev,
726 struct iw_request_info *info,
727 union iwreq_data *wrqu, char *keybuf)
728{
729 struct iw_point *erq = &wrqu->encoding;
730 struct wireless_dev *wdev = dev->ieee80211_ptr;
731 int idx;
732
733 if (wdev->iftype != NL80211_IFTYPE_STATION &&
734 wdev->iftype != NL80211_IFTYPE_ADHOC)
735 return -EOPNOTSUPP;
736
737 idx = erq->flags & IW_ENCODE_INDEX;
738 if (idx == 0) {
739 idx = wdev->wext.default_key;
740 if (idx < 0)
741 idx = 0;
742 } else if (idx < 1 || idx > 4)
743 return -EINVAL;
744 else
745 idx--;
746
747 erq->flags = idx + 1;
748
749 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
750 erq->flags |= IW_ENCODE_DISABLED;
751 erq->length = 0;
752 return 0;
753 }
754
755 erq->length = min_t(size_t, erq->length,
756 wdev->wext.keys->params[idx].key_len);
757 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
758 erq->flags |= IW_ENCODE_ENABLED;
759
760 return 0;
761}
762
763static int cfg80211_wext_siwfreq(struct net_device *dev,
764 struct iw_request_info *info,
765 union iwreq_data *wrqu, char *extra)
766{
767 struct iw_freq *wextfreq = &wrqu->freq;
768 struct wireless_dev *wdev = dev->ieee80211_ptr;
769 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
770 struct cfg80211_chan_def chandef = {
771 .width = NL80211_CHAN_WIDTH_20_NOHT,
772 };
773 int freq;
774
775 guard(wiphy)(&rdev->wiphy);
776
777 switch (wdev->iftype) {
778 case NL80211_IFTYPE_STATION:
779 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
780 case NL80211_IFTYPE_ADHOC:
781 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
782 case NL80211_IFTYPE_MONITOR:
783 freq = cfg80211_wext_freq(wextfreq);
784 if (freq < 0)
785 return freq;
786 if (freq == 0)
787 return -EINVAL;
788
789 chandef.center_freq1 = freq;
790 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
791 if (!chandef.chan)
792 return -EINVAL;
793 if (!cfg80211_chandef_valid(&chandef))
794 return -EINVAL;
795 return cfg80211_set_monitor_channel(rdev, dev, &chandef);
796 case NL80211_IFTYPE_MESH_POINT:
797 freq = cfg80211_wext_freq(wextfreq);
798 if (freq < 0)
799 return freq;
800 if (freq == 0)
801 return -EINVAL;
802 chandef.center_freq1 = freq;
803 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
804 if (!chandef.chan)
805 return -EINVAL;
806 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
807 default:
808 return -EOPNOTSUPP;
809 }
810}
811
812static int cfg80211_wext_giwfreq(struct net_device *dev,
813 struct iw_request_info *info,
814 union iwreq_data *wrqu, char *extra)
815{
816 struct iw_freq *freq = &wrqu->freq;
817 struct wireless_dev *wdev = dev->ieee80211_ptr;
818 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
819 struct cfg80211_chan_def chandef = {};
820 int ret;
821
822 guard(wiphy)(&rdev->wiphy);
823
824 switch (wdev->iftype) {
825 case NL80211_IFTYPE_STATION:
826 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
827 case NL80211_IFTYPE_ADHOC:
828 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
829 case NL80211_IFTYPE_MONITOR:
830 if (!rdev->ops->get_channel)
831 return -EINVAL;
832
833 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
834 if (ret)
835 return ret;
836 freq->m = chandef.chan->center_freq;
837 freq->e = 6;
838 return ret;
839 default:
840 return -EINVAL;
841 }
842}
843
844static int cfg80211_wext_siwtxpower(struct net_device *dev,
845 struct iw_request_info *info,
846 union iwreq_data *data, char *extra)
847{
848 struct wireless_dev *wdev = dev->ieee80211_ptr;
849 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
850 enum nl80211_tx_power_setting type;
851 int dbm = 0;
852
853 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
854 return -EINVAL;
855 if (data->txpower.flags & IW_TXPOW_RANGE)
856 return -EINVAL;
857
858 if (!rdev->ops->set_tx_power)
859 return -EOPNOTSUPP;
860
861 /* only change when not disabling */
862 if (!data->txpower.disabled) {
863 rfkill_set_sw_state(rdev->wiphy.rfkill, false);
864
865 if (data->txpower.fixed) {
866 /*
867 * wext doesn't support negative values, see
868 * below where it's for automatic
869 */
870 if (data->txpower.value < 0)
871 return -EINVAL;
872 dbm = data->txpower.value;
873 type = NL80211_TX_POWER_FIXED;
874 /* TODO: do regulatory check! */
875 } else {
876 /*
877 * Automatic power level setting, max being the value
878 * passed in from userland.
879 */
880 if (data->txpower.value < 0) {
881 type = NL80211_TX_POWER_AUTOMATIC;
882 } else {
883 dbm = data->txpower.value;
884 type = NL80211_TX_POWER_LIMITED;
885 }
886 }
887 } else {
888 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
889 schedule_work(&rdev->rfkill_block);
890 return 0;
891 }
892
893 guard(wiphy)(&rdev->wiphy);
894
895 return rdev_set_tx_power(rdev, wdev, -1, type, DBM_TO_MBM(dbm));
896}
897
898static int cfg80211_wext_giwtxpower(struct net_device *dev,
899 struct iw_request_info *info,
900 union iwreq_data *data, char *extra)
901{
902 struct wireless_dev *wdev = dev->ieee80211_ptr;
903 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
904 int err, val;
905
906 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
907 return -EINVAL;
908 if (data->txpower.flags & IW_TXPOW_RANGE)
909 return -EINVAL;
910
911 if (!rdev->ops->get_tx_power)
912 return -EOPNOTSUPP;
913
914 scoped_guard(wiphy, &rdev->wiphy) {
915 err = rdev_get_tx_power(rdev, wdev, -1, 0, &val);
916 }
917 if (err)
918 return err;
919
920 /* well... oh well */
921 data->txpower.fixed = 1;
922 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
923 data->txpower.value = val;
924 data->txpower.flags = IW_TXPOW_DBM;
925
926 return 0;
927}
928
929static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
930 s32 auth_alg)
931{
932 int nr_alg = 0;
933
934 if (!auth_alg)
935 return -EINVAL;
936
937 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
938 IW_AUTH_ALG_SHARED_KEY |
939 IW_AUTH_ALG_LEAP))
940 return -EINVAL;
941
942 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
943 nr_alg++;
944 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
945 }
946
947 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
948 nr_alg++;
949 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
950 }
951
952 if (auth_alg & IW_AUTH_ALG_LEAP) {
953 nr_alg++;
954 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
955 }
956
957 if (nr_alg > 1)
958 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
959
960 return 0;
961}
962
963static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
964{
965 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
966 IW_AUTH_WPA_VERSION_WPA2|
967 IW_AUTH_WPA_VERSION_DISABLED))
968 return -EINVAL;
969
970 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
971 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
972 IW_AUTH_WPA_VERSION_WPA2)))
973 return -EINVAL;
974
975 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
976 wdev->wext.connect.crypto.wpa_versions &=
977 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
978
979 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
980 wdev->wext.connect.crypto.wpa_versions |=
981 NL80211_WPA_VERSION_1;
982
983 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
984 wdev->wext.connect.crypto.wpa_versions |=
985 NL80211_WPA_VERSION_2;
986
987 return 0;
988}
989
990static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
991{
992 if (cipher & IW_AUTH_CIPHER_WEP40)
993 wdev->wext.connect.crypto.cipher_group =
994 WLAN_CIPHER_SUITE_WEP40;
995 else if (cipher & IW_AUTH_CIPHER_WEP104)
996 wdev->wext.connect.crypto.cipher_group =
997 WLAN_CIPHER_SUITE_WEP104;
998 else if (cipher & IW_AUTH_CIPHER_TKIP)
999 wdev->wext.connect.crypto.cipher_group =
1000 WLAN_CIPHER_SUITE_TKIP;
1001 else if (cipher & IW_AUTH_CIPHER_CCMP)
1002 wdev->wext.connect.crypto.cipher_group =
1003 WLAN_CIPHER_SUITE_CCMP;
1004 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1005 wdev->wext.connect.crypto.cipher_group =
1006 WLAN_CIPHER_SUITE_AES_CMAC;
1007 else if (cipher & IW_AUTH_CIPHER_NONE)
1008 wdev->wext.connect.crypto.cipher_group = 0;
1009 else
1010 return -EINVAL;
1011
1012 return 0;
1013}
1014
1015static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1016{
1017 int nr_ciphers = 0;
1018 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1019
1020 if (cipher & IW_AUTH_CIPHER_WEP40) {
1021 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1022 nr_ciphers++;
1023 }
1024
1025 if (cipher & IW_AUTH_CIPHER_WEP104) {
1026 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1027 nr_ciphers++;
1028 }
1029
1030 if (cipher & IW_AUTH_CIPHER_TKIP) {
1031 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1032 nr_ciphers++;
1033 }
1034
1035 if (cipher & IW_AUTH_CIPHER_CCMP) {
1036 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1037 nr_ciphers++;
1038 }
1039
1040 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1041 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1042 nr_ciphers++;
1043 }
1044
1045 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1046
1047 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1048
1049 return 0;
1050}
1051
1052
1053static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1054{
1055 int nr_akm_suites = 0;
1056
1057 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1058 IW_AUTH_KEY_MGMT_PSK))
1059 return -EINVAL;
1060
1061 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1062 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1063 WLAN_AKM_SUITE_8021X;
1064 nr_akm_suites++;
1065 }
1066
1067 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1068 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1069 WLAN_AKM_SUITE_PSK;
1070 nr_akm_suites++;
1071 }
1072
1073 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1074
1075 return 0;
1076}
1077
1078static int cfg80211_wext_siwauth(struct net_device *dev,
1079 struct iw_request_info *info,
1080 union iwreq_data *wrqu, char *extra)
1081{
1082 struct iw_param *data = &wrqu->param;
1083 struct wireless_dev *wdev = dev->ieee80211_ptr;
1084
1085 if (wdev->iftype != NL80211_IFTYPE_STATION)
1086 return -EOPNOTSUPP;
1087
1088 switch (data->flags & IW_AUTH_INDEX) {
1089 case IW_AUTH_PRIVACY_INVOKED:
1090 wdev->wext.connect.privacy = data->value;
1091 return 0;
1092 case IW_AUTH_WPA_VERSION:
1093 return cfg80211_set_wpa_version(wdev, data->value);
1094 case IW_AUTH_CIPHER_GROUP:
1095 return cfg80211_set_cipher_group(wdev, data->value);
1096 case IW_AUTH_KEY_MGMT:
1097 return cfg80211_set_key_mgt(wdev, data->value);
1098 case IW_AUTH_CIPHER_PAIRWISE:
1099 return cfg80211_set_cipher_pairwise(wdev, data->value);
1100 case IW_AUTH_80211_AUTH_ALG:
1101 return cfg80211_set_auth_alg(wdev, data->value);
1102 case IW_AUTH_WPA_ENABLED:
1103 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1104 case IW_AUTH_DROP_UNENCRYPTED:
1105 case IW_AUTH_MFP:
1106 return 0;
1107 default:
1108 return -EOPNOTSUPP;
1109 }
1110}
1111
1112static int cfg80211_wext_giwauth(struct net_device *dev,
1113 struct iw_request_info *info,
1114 union iwreq_data *wrqu, char *extra)
1115{
1116 /* XXX: what do we need? */
1117
1118 return -EOPNOTSUPP;
1119}
1120
1121static int cfg80211_wext_siwpower(struct net_device *dev,
1122 struct iw_request_info *info,
1123 union iwreq_data *wrqu, char *extra)
1124{
1125 struct iw_param *wrq = &wrqu->power;
1126 struct wireless_dev *wdev = dev->ieee80211_ptr;
1127 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1128 bool ps;
1129 int timeout = wdev->ps_timeout;
1130 int err;
1131
1132 if (wdev->iftype != NL80211_IFTYPE_STATION)
1133 return -EINVAL;
1134
1135 if (!rdev->ops->set_power_mgmt)
1136 return -EOPNOTSUPP;
1137
1138 if (wrq->disabled) {
1139 ps = false;
1140 } else {
1141 switch (wrq->flags & IW_POWER_MODE) {
1142 case IW_POWER_ON: /* If not specified */
1143 case IW_POWER_MODE: /* If set all mask */
1144 case IW_POWER_ALL_R: /* If explicitly state all */
1145 ps = true;
1146 break;
1147 default: /* Otherwise we ignore */
1148 return -EINVAL;
1149 }
1150
1151 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1152 return -EINVAL;
1153
1154 if (wrq->flags & IW_POWER_TIMEOUT)
1155 timeout = wrq->value / 1000;
1156 }
1157
1158 guard(wiphy)(&rdev->wiphy);
1159
1160 err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1161 if (err)
1162 return err;
1163
1164 wdev->ps = ps;
1165 wdev->ps_timeout = timeout;
1166
1167 return 0;
1168
1169}
1170
1171static int cfg80211_wext_giwpower(struct net_device *dev,
1172 struct iw_request_info *info,
1173 union iwreq_data *wrqu, char *extra)
1174{
1175 struct iw_param *wrq = &wrqu->power;
1176 struct wireless_dev *wdev = dev->ieee80211_ptr;
1177
1178 wrq->disabled = !wdev->ps;
1179
1180 return 0;
1181}
1182
1183static int cfg80211_wext_siwrate(struct net_device *dev,
1184 struct iw_request_info *info,
1185 union iwreq_data *wrqu, char *extra)
1186{
1187 struct iw_param *rate = &wrqu->bitrate;
1188 struct wireless_dev *wdev = dev->ieee80211_ptr;
1189 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1190 struct cfg80211_bitrate_mask mask;
1191 u32 fixed, maxrate;
1192 struct ieee80211_supported_band *sband;
1193 bool match = false;
1194 int band, ridx;
1195
1196 if (!rdev->ops->set_bitrate_mask)
1197 return -EOPNOTSUPP;
1198
1199 memset(&mask, 0, sizeof(mask));
1200 fixed = 0;
1201 maxrate = (u32)-1;
1202
1203 if (rate->value < 0) {
1204 /* nothing */
1205 } else if (rate->fixed) {
1206 fixed = rate->value / 100000;
1207 } else {
1208 maxrate = rate->value / 100000;
1209 }
1210
1211 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1212 sband = wdev->wiphy->bands[band];
1213 if (sband == NULL)
1214 continue;
1215 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1216 struct ieee80211_rate *srate = &sband->bitrates[ridx];
1217 if (fixed == srate->bitrate) {
1218 mask.control[band].legacy = 1 << ridx;
1219 match = true;
1220 break;
1221 }
1222 if (srate->bitrate <= maxrate) {
1223 mask.control[band].legacy |= 1 << ridx;
1224 match = true;
1225 }
1226 }
1227 }
1228
1229 if (!match)
1230 return -EINVAL;
1231
1232 guard(wiphy)(&rdev->wiphy);
1233
1234 if (dev->ieee80211_ptr->valid_links)
1235 return -EOPNOTSUPP;
1236
1237 return rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask);
1238}
1239
1240static int cfg80211_wext_giwrate(struct net_device *dev,
1241 struct iw_request_info *info,
1242 union iwreq_data *wrqu, char *extra)
1243{
1244 struct iw_param *rate = &wrqu->bitrate;
1245 struct wireless_dev *wdev = dev->ieee80211_ptr;
1246 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1247 struct station_info sinfo = {};
1248 u8 addr[ETH_ALEN];
1249 int err;
1250
1251 if (wdev->iftype != NL80211_IFTYPE_STATION)
1252 return -EOPNOTSUPP;
1253
1254 if (!rdev->ops->get_station)
1255 return -EOPNOTSUPP;
1256
1257 err = 0;
1258 if (!wdev->valid_links && wdev->links[0].client.current_bss)
1259 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid,
1260 ETH_ALEN);
1261 else
1262 err = -EOPNOTSUPP;
1263 if (err)
1264 return err;
1265
1266 scoped_guard(wiphy, &rdev->wiphy) {
1267 err = rdev_get_station(rdev, wdev, addr, &sinfo);
1268 }
1269 if (err)
1270 return err;
1271
1272 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1273 err = -EOPNOTSUPP;
1274 goto free;
1275 }
1276
1277 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1278
1279free:
1280 cfg80211_sinfo_release_content(&sinfo);
1281 return err;
1282}
1283
1284/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1285static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1286{
1287 struct wireless_dev *wdev = dev->ieee80211_ptr;
1288 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1289 /* we are under RTNL - globally locked - so can use static structs */
1290 static struct iw_statistics wstats;
1291 static struct station_info sinfo = {};
1292 u8 bssid[ETH_ALEN];
1293 int ret;
1294
1295 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1296 return NULL;
1297
1298 if (!rdev->ops->get_station)
1299 return NULL;
1300
1301 /* Grab BSSID of current BSS, if any */
1302 wiphy_lock(&rdev->wiphy);
1303 if (wdev->valid_links || !wdev->links[0].client.current_bss) {
1304 wiphy_unlock(&rdev->wiphy);
1305 return NULL;
1306 }
1307 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN);
1308
1309 memset(&sinfo, 0, sizeof(sinfo));
1310
1311 ret = rdev_get_station(rdev, wdev, bssid, &sinfo);
1312 wiphy_unlock(&rdev->wiphy);
1313
1314 if (ret)
1315 return NULL;
1316
1317 memset(&wstats, 0, sizeof(wstats));
1318
1319 switch (rdev->wiphy.signal_type) {
1320 case CFG80211_SIGNAL_TYPE_MBM:
1321 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1322 int sig = sinfo.signal;
1323 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1324 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1325 wstats.qual.updated |= IW_QUAL_DBM;
1326 wstats.qual.level = sig;
1327 if (sig < -110)
1328 sig = -110;
1329 else if (sig > -40)
1330 sig = -40;
1331 wstats.qual.qual = sig + 110;
1332 break;
1333 }
1334 fallthrough;
1335 case CFG80211_SIGNAL_TYPE_UNSPEC:
1336 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1337 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1338 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1339 wstats.qual.level = sinfo.signal;
1340 wstats.qual.qual = sinfo.signal;
1341 break;
1342 }
1343 fallthrough;
1344 default:
1345 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1346 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1347 }
1348
1349 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1350 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1351 wstats.discard.misc = sinfo.rx_dropped_misc;
1352 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1353 wstats.discard.retries = sinfo.tx_failed;
1354
1355 cfg80211_sinfo_release_content(&sinfo);
1356
1357 return &wstats;
1358}
1359
1360static int cfg80211_wext_siwap(struct net_device *dev,
1361 struct iw_request_info *info,
1362 union iwreq_data *wrqu, char *extra)
1363{
1364 struct sockaddr *ap_addr = &wrqu->ap_addr;
1365 struct wireless_dev *wdev = dev->ieee80211_ptr;
1366 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1367
1368 guard(wiphy)(&rdev->wiphy);
1369
1370 switch (wdev->iftype) {
1371 case NL80211_IFTYPE_ADHOC:
1372 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1373 case NL80211_IFTYPE_STATION:
1374 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1375 default:
1376 return -EOPNOTSUPP;
1377 }
1378}
1379
1380static int cfg80211_wext_giwap(struct net_device *dev,
1381 struct iw_request_info *info,
1382 union iwreq_data *wrqu, char *extra)
1383{
1384 struct sockaddr *ap_addr = &wrqu->ap_addr;
1385 struct wireless_dev *wdev = dev->ieee80211_ptr;
1386 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1387
1388 guard(wiphy)(&rdev->wiphy);
1389
1390 switch (wdev->iftype) {
1391 case NL80211_IFTYPE_ADHOC:
1392 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1393 case NL80211_IFTYPE_STATION:
1394 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1395 default:
1396 return -EOPNOTSUPP;
1397 }
1398}
1399
1400static int cfg80211_wext_siwessid(struct net_device *dev,
1401 struct iw_request_info *info,
1402 union iwreq_data *wrqu, char *ssid)
1403{
1404 struct iw_point *data = &wrqu->data;
1405 struct wireless_dev *wdev = dev->ieee80211_ptr;
1406 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1407
1408 guard(wiphy)(&rdev->wiphy);
1409
1410 switch (wdev->iftype) {
1411 case NL80211_IFTYPE_ADHOC:
1412 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1413 case NL80211_IFTYPE_STATION:
1414 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1415 default:
1416 return -EOPNOTSUPP;
1417 }
1418}
1419
1420static int cfg80211_wext_giwessid(struct net_device *dev,
1421 struct iw_request_info *info,
1422 union iwreq_data *wrqu, char *ssid)
1423{
1424 struct iw_point *data = &wrqu->data;
1425 struct wireless_dev *wdev = dev->ieee80211_ptr;
1426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1427
1428 data->flags = 0;
1429 data->length = 0;
1430
1431 guard(wiphy)(&rdev->wiphy);
1432
1433 switch (wdev->iftype) {
1434 case NL80211_IFTYPE_ADHOC:
1435 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1436 case NL80211_IFTYPE_STATION:
1437 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1438 default:
1439 return -EOPNOTSUPP;
1440 }
1441}
1442
1443static int cfg80211_wext_siwpmksa(struct net_device *dev,
1444 struct iw_request_info *info,
1445 union iwreq_data *wrqu, char *extra)
1446{
1447 struct wireless_dev *wdev = dev->ieee80211_ptr;
1448 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1449 struct cfg80211_pmksa cfg_pmksa;
1450 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1451
1452 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1453
1454 if (wdev->iftype != NL80211_IFTYPE_STATION)
1455 return -EINVAL;
1456
1457 cfg_pmksa.bssid = pmksa->bssid.sa_data;
1458 cfg_pmksa.pmkid = pmksa->pmkid;
1459
1460 guard(wiphy)(&rdev->wiphy);
1461
1462 switch (pmksa->cmd) {
1463 case IW_PMKSA_ADD:
1464 if (!rdev->ops->set_pmksa)
1465 return -EOPNOTSUPP;
1466
1467 return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1468 case IW_PMKSA_REMOVE:
1469 if (!rdev->ops->del_pmksa)
1470 return -EOPNOTSUPP;
1471
1472 return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1473 case IW_PMKSA_FLUSH:
1474 if (!rdev->ops->flush_pmksa)
1475 return -EOPNOTSUPP;
1476
1477 return rdev_flush_pmksa(rdev, dev);
1478 default:
1479 return -EOPNOTSUPP;
1480 }
1481}
1482
1483static const iw_handler cfg80211_handlers[] = {
1484 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
1485 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq),
1486 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq),
1487 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode),
1488 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode),
1489 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange),
1490 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap),
1491 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap),
1492 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme),
1493 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan),
1494 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan),
1495 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid),
1496 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid),
1497 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate),
1498 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate),
1499 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts),
1500 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts),
1501 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag),
1502 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag),
1503 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower),
1504 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower),
1505 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry),
1506 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
1507 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode),
1508 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode),
1509 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower),
1510 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower),
1511 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie),
1512 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth),
1513 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth),
1514 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext),
1515 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa),
1516};
1517
1518const struct iw_handler_def cfg80211_wext_handler = {
1519 .num_standard = ARRAY_SIZE(cfg80211_handlers),
1520 .standard = cfg80211_handlers,
1521 .get_wireless_stats = cfg80211_wireless_stats,
1522};