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Merge tag 'memblock-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt...
[linux-block.git] / net / wireless / wext-compat.c
... / ...
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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * cfg80211 - wext compat code
4 *
5 * This is temporary code until all wireless functionality is migrated
6 * into cfg80211, when that happens all the exports here go away and
7 * we directly assign the wireless handlers of wireless interfaces.
8 *
9 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
10 * Copyright (C) 2019-2021 Intel Corporation
11 */
12
13#include <linux/export.h>
14#include <linux/wireless.h>
15#include <linux/nl80211.h>
16#include <linux/if_arp.h>
17#include <linux/etherdevice.h>
18#include <linux/slab.h>
19#include <net/iw_handler.h>
20#include <net/cfg80211.h>
21#include <net/cfg80211-wext.h>
22#include "wext-compat.h"
23#include "core.h"
24#include "rdev-ops.h"
25
26int cfg80211_wext_giwname(struct net_device *dev,
27 struct iw_request_info *info,
28 char *name, char *extra)
29{
30 strcpy(name, "IEEE 802.11");
31 return 0;
32}
33EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
34
35int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
36 u32 *mode, char *extra)
37{
38 struct wireless_dev *wdev = dev->ieee80211_ptr;
39 struct cfg80211_registered_device *rdev;
40 struct vif_params vifparams;
41 enum nl80211_iftype type;
42 int ret;
43
44 rdev = wiphy_to_rdev(wdev->wiphy);
45
46 switch (*mode) {
47 case IW_MODE_INFRA:
48 type = NL80211_IFTYPE_STATION;
49 break;
50 case IW_MODE_ADHOC:
51 type = NL80211_IFTYPE_ADHOC;
52 break;
53 case IW_MODE_MONITOR:
54 type = NL80211_IFTYPE_MONITOR;
55 break;
56 default:
57 return -EINVAL;
58 }
59
60 if (type == wdev->iftype)
61 return 0;
62
63 memset(&vifparams, 0, sizeof(vifparams));
64
65 wiphy_lock(wdev->wiphy);
66 ret = cfg80211_change_iface(rdev, dev, type, &vifparams);
67 wiphy_unlock(wdev->wiphy);
68
69 return ret;
70}
71EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
72
73int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
74 u32 *mode, char *extra)
75{
76 struct wireless_dev *wdev = dev->ieee80211_ptr;
77
78 if (!wdev)
79 return -EOPNOTSUPP;
80
81 switch (wdev->iftype) {
82 case NL80211_IFTYPE_AP:
83 *mode = IW_MODE_MASTER;
84 break;
85 case NL80211_IFTYPE_STATION:
86 *mode = IW_MODE_INFRA;
87 break;
88 case NL80211_IFTYPE_ADHOC:
89 *mode = IW_MODE_ADHOC;
90 break;
91 case NL80211_IFTYPE_MONITOR:
92 *mode = IW_MODE_MONITOR;
93 break;
94 case NL80211_IFTYPE_WDS:
95 *mode = IW_MODE_REPEAT;
96 break;
97 case NL80211_IFTYPE_AP_VLAN:
98 *mode = IW_MODE_SECOND; /* FIXME */
99 break;
100 default:
101 *mode = IW_MODE_AUTO;
102 break;
103 }
104 return 0;
105}
106EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
107
108
109int cfg80211_wext_giwrange(struct net_device *dev,
110 struct iw_request_info *info,
111 struct iw_point *data, char *extra)
112{
113 struct wireless_dev *wdev = dev->ieee80211_ptr;
114 struct iw_range *range = (struct iw_range *) extra;
115 enum nl80211_band band;
116 int i, c = 0;
117
118 if (!wdev)
119 return -EOPNOTSUPP;
120
121 data->length = sizeof(struct iw_range);
122 memset(range, 0, sizeof(struct iw_range));
123
124 range->we_version_compiled = WIRELESS_EXT;
125 range->we_version_source = 21;
126 range->retry_capa = IW_RETRY_LIMIT;
127 range->retry_flags = IW_RETRY_LIMIT;
128 range->min_retry = 0;
129 range->max_retry = 255;
130 range->min_rts = 0;
131 range->max_rts = 2347;
132 range->min_frag = 256;
133 range->max_frag = 2346;
134
135 range->max_encoding_tokens = 4;
136
137 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
138
139 switch (wdev->wiphy->signal_type) {
140 case CFG80211_SIGNAL_TYPE_NONE:
141 break;
142 case CFG80211_SIGNAL_TYPE_MBM:
143 range->max_qual.level = (u8)-110;
144 range->max_qual.qual = 70;
145 range->avg_qual.qual = 35;
146 range->max_qual.updated |= IW_QUAL_DBM;
147 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
148 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
149 break;
150 case CFG80211_SIGNAL_TYPE_UNSPEC:
151 range->max_qual.level = 100;
152 range->max_qual.qual = 100;
153 range->avg_qual.qual = 50;
154 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
155 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
156 break;
157 }
158
159 range->avg_qual.level = range->max_qual.level / 2;
160 range->avg_qual.noise = range->max_qual.noise / 2;
161 range->avg_qual.updated = range->max_qual.updated;
162
163 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
164 switch (wdev->wiphy->cipher_suites[i]) {
165 case WLAN_CIPHER_SUITE_TKIP:
166 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
167 IW_ENC_CAPA_WPA);
168 break;
169
170 case WLAN_CIPHER_SUITE_CCMP:
171 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
172 IW_ENC_CAPA_WPA2);
173 break;
174
175 case WLAN_CIPHER_SUITE_WEP40:
176 range->encoding_size[range->num_encoding_sizes++] =
177 WLAN_KEY_LEN_WEP40;
178 break;
179
180 case WLAN_CIPHER_SUITE_WEP104:
181 range->encoding_size[range->num_encoding_sizes++] =
182 WLAN_KEY_LEN_WEP104;
183 break;
184 }
185 }
186
187 for (band = 0; band < NUM_NL80211_BANDS; band ++) {
188 struct ieee80211_supported_band *sband;
189
190 sband = wdev->wiphy->bands[band];
191
192 if (!sband)
193 continue;
194
195 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
196 struct ieee80211_channel *chan = &sband->channels[i];
197
198 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
199 range->freq[c].i =
200 ieee80211_frequency_to_channel(
201 chan->center_freq);
202 range->freq[c].m = chan->center_freq;
203 range->freq[c].e = 6;
204 c++;
205 }
206 }
207 }
208 range->num_channels = c;
209 range->num_frequency = c;
210
211 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
212 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
213 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
214
215 if (wdev->wiphy->max_scan_ssids > 0)
216 range->scan_capa |= IW_SCAN_CAPA_ESSID;
217
218 return 0;
219}
220EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
221
222
223/**
224 * cfg80211_wext_freq - get wext frequency for non-"auto"
225 * @freq: the wext freq encoding
226 *
227 * Returns a frequency, or a negative error code, or 0 for auto.
228 */
229int cfg80211_wext_freq(struct iw_freq *freq)
230{
231 /*
232 * Parse frequency - return 0 for auto and
233 * -EINVAL for impossible things.
234 */
235 if (freq->e == 0) {
236 enum nl80211_band band = NL80211_BAND_2GHZ;
237 if (freq->m < 0)
238 return 0;
239 if (freq->m > 14)
240 band = NL80211_BAND_5GHZ;
241 return ieee80211_channel_to_frequency(freq->m, band);
242 } else {
243 int i, div = 1000000;
244 for (i = 0; i < freq->e; i++)
245 div /= 10;
246 if (div <= 0)
247 return -EINVAL;
248 return freq->m / div;
249 }
250}
251
252int cfg80211_wext_siwrts(struct net_device *dev,
253 struct iw_request_info *info,
254 struct iw_param *rts, char *extra)
255{
256 struct wireless_dev *wdev = dev->ieee80211_ptr;
257 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
258 u32 orts = wdev->wiphy->rts_threshold;
259 int err;
260
261 wiphy_lock(&rdev->wiphy);
262 if (rts->disabled || !rts->fixed) {
263 wdev->wiphy->rts_threshold = (u32) -1;
264 } else if (rts->value < 0) {
265 err = -EINVAL;
266 goto out;
267 } else {
268 wdev->wiphy->rts_threshold = rts->value;
269 }
270
271 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
272
273 if (err)
274 wdev->wiphy->rts_threshold = orts;
275
276out:
277 wiphy_unlock(&rdev->wiphy);
278 return err;
279}
280EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
281
282int cfg80211_wext_giwrts(struct net_device *dev,
283 struct iw_request_info *info,
284 struct iw_param *rts, char *extra)
285{
286 struct wireless_dev *wdev = dev->ieee80211_ptr;
287
288 rts->value = wdev->wiphy->rts_threshold;
289 rts->disabled = rts->value == (u32) -1;
290 rts->fixed = 1;
291
292 return 0;
293}
294EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
295
296int cfg80211_wext_siwfrag(struct net_device *dev,
297 struct iw_request_info *info,
298 struct iw_param *frag, char *extra)
299{
300 struct wireless_dev *wdev = dev->ieee80211_ptr;
301 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
302 u32 ofrag = wdev->wiphy->frag_threshold;
303 int err;
304
305 wiphy_lock(&rdev->wiphy);
306 if (frag->disabled || !frag->fixed) {
307 wdev->wiphy->frag_threshold = (u32) -1;
308 } else if (frag->value < 256) {
309 err = -EINVAL;
310 goto out;
311 } else {
312 /* Fragment length must be even, so strip LSB. */
313 wdev->wiphy->frag_threshold = frag->value & ~0x1;
314 }
315
316 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
317 if (err)
318 wdev->wiphy->frag_threshold = ofrag;
319out:
320 wiphy_unlock(&rdev->wiphy);
321
322 return err;
323}
324EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
325
326int cfg80211_wext_giwfrag(struct net_device *dev,
327 struct iw_request_info *info,
328 struct iw_param *frag, char *extra)
329{
330 struct wireless_dev *wdev = dev->ieee80211_ptr;
331
332 frag->value = wdev->wiphy->frag_threshold;
333 frag->disabled = frag->value == (u32) -1;
334 frag->fixed = 1;
335
336 return 0;
337}
338EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
339
340static int cfg80211_wext_siwretry(struct net_device *dev,
341 struct iw_request_info *info,
342 struct iw_param *retry, char *extra)
343{
344 struct wireless_dev *wdev = dev->ieee80211_ptr;
345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
346 u32 changed = 0;
347 u8 olong = wdev->wiphy->retry_long;
348 u8 oshort = wdev->wiphy->retry_short;
349 int err;
350
351 if (retry->disabled || retry->value < 1 || retry->value > 255 ||
352 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
353 return -EINVAL;
354
355 wiphy_lock(&rdev->wiphy);
356 if (retry->flags & IW_RETRY_LONG) {
357 wdev->wiphy->retry_long = retry->value;
358 changed |= WIPHY_PARAM_RETRY_LONG;
359 } else if (retry->flags & IW_RETRY_SHORT) {
360 wdev->wiphy->retry_short = retry->value;
361 changed |= WIPHY_PARAM_RETRY_SHORT;
362 } else {
363 wdev->wiphy->retry_short = retry->value;
364 wdev->wiphy->retry_long = retry->value;
365 changed |= WIPHY_PARAM_RETRY_LONG;
366 changed |= WIPHY_PARAM_RETRY_SHORT;
367 }
368
369 err = rdev_set_wiphy_params(rdev, changed);
370 if (err) {
371 wdev->wiphy->retry_short = oshort;
372 wdev->wiphy->retry_long = olong;
373 }
374 wiphy_unlock(&rdev->wiphy);
375
376 return err;
377}
378
379int cfg80211_wext_giwretry(struct net_device *dev,
380 struct iw_request_info *info,
381 struct iw_param *retry, char *extra)
382{
383 struct wireless_dev *wdev = dev->ieee80211_ptr;
384
385 retry->disabled = 0;
386
387 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
388 /*
389 * First return short value, iwconfig will ask long value
390 * later if needed
391 */
392 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
393 retry->value = wdev->wiphy->retry_short;
394 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
395 retry->flags |= IW_RETRY_LONG;
396
397 return 0;
398 }
399
400 if (retry->flags & IW_RETRY_LONG) {
401 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
402 retry->value = wdev->wiphy->retry_long;
403 }
404
405 return 0;
406}
407EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
408
409static 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 (pairwise && !addr)
419 return -EINVAL;
420
421 /*
422 * In many cases we won't actually need this, but it's better
423 * to do it first in case the allocation fails. Don't use wext.
424 */
425 if (!wdev->wext.keys) {
426 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
427 GFP_KERNEL);
428 if (!wdev->wext.keys)
429 return -ENOMEM;
430 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
431 wdev->wext.keys->params[i].key =
432 wdev->wext.keys->data[i];
433 }
434
435 if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
436 wdev->iftype != NL80211_IFTYPE_STATION)
437 return -EOPNOTSUPP;
438
439 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
440 if (!wdev->current_bss)
441 return -ENOLINK;
442
443 if (!rdev->ops->set_default_mgmt_key)
444 return -EOPNOTSUPP;
445
446 if (idx < 4 || idx > 5)
447 return -EINVAL;
448 } else if (idx < 0 || idx > 3)
449 return -EINVAL;
450
451 if (remove) {
452 err = 0;
453 if (wdev->current_bss) {
454 /*
455 * If removing the current TX key, we will need to
456 * join a new IBSS without the privacy bit clear.
457 */
458 if (idx == wdev->wext.default_key &&
459 wdev->iftype == NL80211_IFTYPE_ADHOC) {
460 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
461 rejoin = true;
462 }
463
464 if (!pairwise && addr &&
465 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
466 err = -ENOENT;
467 else
468 err = rdev_del_key(rdev, dev, idx, pairwise,
469 addr);
470 }
471 wdev->wext.connect.privacy = false;
472 /*
473 * Applications using wireless extensions expect to be
474 * able to delete keys that don't exist, so allow that.
475 */
476 if (err == -ENOENT)
477 err = 0;
478 if (!err) {
479 if (!addr && idx < 4) {
480 memset(wdev->wext.keys->data[idx], 0,
481 sizeof(wdev->wext.keys->data[idx]));
482 wdev->wext.keys->params[idx].key_len = 0;
483 wdev->wext.keys->params[idx].cipher = 0;
484 }
485 if (idx == wdev->wext.default_key)
486 wdev->wext.default_key = -1;
487 else if (idx == wdev->wext.default_mgmt_key)
488 wdev->wext.default_mgmt_key = -1;
489 }
490
491 if (!err && rejoin)
492 err = cfg80211_ibss_wext_join(rdev, wdev);
493
494 return err;
495 }
496
497 if (addr)
498 tx_key = false;
499
500 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
501 return -EINVAL;
502
503 err = 0;
504 if (wdev->current_bss)
505 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
506 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
507 params->cipher != WLAN_CIPHER_SUITE_WEP104)
508 return -EINVAL;
509 if (err)
510 return err;
511
512 /*
513 * We only need to store WEP keys, since they're the only keys that
514 * can be set before a connection is established and persist after
515 * disconnecting.
516 */
517 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
518 params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
519 wdev->wext.keys->params[idx] = *params;
520 memcpy(wdev->wext.keys->data[idx],
521 params->key, params->key_len);
522 wdev->wext.keys->params[idx].key =
523 wdev->wext.keys->data[idx];
524 }
525
526 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
527 params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
528 (tx_key || (!addr && wdev->wext.default_key == -1))) {
529 if (wdev->current_bss) {
530 /*
531 * If we are getting a new TX key from not having
532 * had one before we need to join a new IBSS with
533 * the privacy bit set.
534 */
535 if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
536 wdev->wext.default_key == -1) {
537 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
538 rejoin = true;
539 }
540 err = rdev_set_default_key(rdev, dev, idx, true, true);
541 }
542 if (!err) {
543 wdev->wext.default_key = idx;
544 if (rejoin)
545 err = cfg80211_ibss_wext_join(rdev, wdev);
546 }
547 return err;
548 }
549
550 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
551 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
552 if (wdev->current_bss)
553 err = rdev_set_default_mgmt_key(rdev, dev, idx);
554 if (!err)
555 wdev->wext.default_mgmt_key = idx;
556 return err;
557 }
558
559 return 0;
560}
561
562static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
563 struct net_device *dev, bool pairwise,
564 const u8 *addr, bool remove, bool tx_key,
565 int idx, struct key_params *params)
566{
567 int err;
568
569 wdev_lock(dev->ieee80211_ptr);
570 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
571 remove, tx_key, idx, params);
572 wdev_unlock(dev->ieee80211_ptr);
573
574 return err;
575}
576
577static int cfg80211_wext_siwencode(struct net_device *dev,
578 struct iw_request_info *info,
579 struct iw_point *erq, char *keybuf)
580{
581 struct wireless_dev *wdev = dev->ieee80211_ptr;
582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
583 int idx, err;
584 bool remove = false;
585 struct key_params params;
586
587 if (wdev->iftype != NL80211_IFTYPE_STATION &&
588 wdev->iftype != NL80211_IFTYPE_ADHOC)
589 return -EOPNOTSUPP;
590
591 /* no use -- only MFP (set_default_mgmt_key) is optional */
592 if (!rdev->ops->del_key ||
593 !rdev->ops->add_key ||
594 !rdev->ops->set_default_key)
595 return -EOPNOTSUPP;
596
597 wiphy_lock(&rdev->wiphy);
598 idx = erq->flags & IW_ENCODE_INDEX;
599 if (idx == 0) {
600 idx = wdev->wext.default_key;
601 if (idx < 0)
602 idx = 0;
603 } else if (idx < 1 || idx > 4) {
604 err = -EINVAL;
605 goto out;
606 } else {
607 idx--;
608 }
609
610 if (erq->flags & IW_ENCODE_DISABLED)
611 remove = true;
612 else if (erq->length == 0) {
613 /* No key data - just set the default TX key index */
614 err = 0;
615 wdev_lock(wdev);
616 if (wdev->current_bss)
617 err = rdev_set_default_key(rdev, dev, idx, true,
618 true);
619 if (!err)
620 wdev->wext.default_key = idx;
621 wdev_unlock(wdev);
622 goto out;
623 }
624
625 memset(&params, 0, sizeof(params));
626 params.key = keybuf;
627 params.key_len = erq->length;
628 if (erq->length == 5) {
629 params.cipher = WLAN_CIPHER_SUITE_WEP40;
630 } else if (erq->length == 13) {
631 params.cipher = WLAN_CIPHER_SUITE_WEP104;
632 } else if (!remove) {
633 err = -EINVAL;
634 goto out;
635 }
636
637 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
638 wdev->wext.default_key == -1,
639 idx, &params);
640out:
641 wiphy_unlock(&rdev->wiphy);
642
643 return err;
644}
645
646static int cfg80211_wext_siwencodeext(struct net_device *dev,
647 struct iw_request_info *info,
648 struct iw_point *erq, char *extra)
649{
650 struct wireless_dev *wdev = dev->ieee80211_ptr;
651 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
652 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
653 const u8 *addr;
654 int idx;
655 bool remove = false;
656 struct key_params params;
657 u32 cipher;
658 int ret;
659
660 if (wdev->iftype != NL80211_IFTYPE_STATION &&
661 wdev->iftype != NL80211_IFTYPE_ADHOC)
662 return -EOPNOTSUPP;
663
664 /* no use -- only MFP (set_default_mgmt_key) is optional */
665 if (!rdev->ops->del_key ||
666 !rdev->ops->add_key ||
667 !rdev->ops->set_default_key)
668 return -EOPNOTSUPP;
669
670 switch (ext->alg) {
671 case IW_ENCODE_ALG_NONE:
672 remove = true;
673 cipher = 0;
674 break;
675 case IW_ENCODE_ALG_WEP:
676 if (ext->key_len == 5)
677 cipher = WLAN_CIPHER_SUITE_WEP40;
678 else if (ext->key_len == 13)
679 cipher = WLAN_CIPHER_SUITE_WEP104;
680 else
681 return -EINVAL;
682 break;
683 case IW_ENCODE_ALG_TKIP:
684 cipher = WLAN_CIPHER_SUITE_TKIP;
685 break;
686 case IW_ENCODE_ALG_CCMP:
687 cipher = WLAN_CIPHER_SUITE_CCMP;
688 break;
689 case IW_ENCODE_ALG_AES_CMAC:
690 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
691 break;
692 default:
693 return -EOPNOTSUPP;
694 }
695
696 if (erq->flags & IW_ENCODE_DISABLED)
697 remove = true;
698
699 idx = erq->flags & IW_ENCODE_INDEX;
700 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
701 if (idx < 4 || idx > 5) {
702 idx = wdev->wext.default_mgmt_key;
703 if (idx < 0)
704 return -EINVAL;
705 } else
706 idx--;
707 } else {
708 if (idx < 1 || idx > 4) {
709 idx = wdev->wext.default_key;
710 if (idx < 0)
711 return -EINVAL;
712 } else
713 idx--;
714 }
715
716 addr = ext->addr.sa_data;
717 if (is_broadcast_ether_addr(addr))
718 addr = NULL;
719
720 memset(&params, 0, sizeof(params));
721 params.key = ext->key;
722 params.key_len = ext->key_len;
723 params.cipher = cipher;
724
725 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
726 params.seq = ext->rx_seq;
727 params.seq_len = 6;
728 }
729
730 wiphy_lock(wdev->wiphy);
731 ret = cfg80211_set_encryption(
732 rdev, dev,
733 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
734 addr, remove,
735 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
736 idx, &params);
737 wiphy_unlock(wdev->wiphy);
738
739 return ret;
740}
741
742static int cfg80211_wext_giwencode(struct net_device *dev,
743 struct iw_request_info *info,
744 struct iw_point *erq, char *keybuf)
745{
746 struct wireless_dev *wdev = dev->ieee80211_ptr;
747 int idx;
748
749 if (wdev->iftype != NL80211_IFTYPE_STATION &&
750 wdev->iftype != NL80211_IFTYPE_ADHOC)
751 return -EOPNOTSUPP;
752
753 idx = erq->flags & IW_ENCODE_INDEX;
754 if (idx == 0) {
755 idx = wdev->wext.default_key;
756 if (idx < 0)
757 idx = 0;
758 } else if (idx < 1 || idx > 4)
759 return -EINVAL;
760 else
761 idx--;
762
763 erq->flags = idx + 1;
764
765 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
766 erq->flags |= IW_ENCODE_DISABLED;
767 erq->length = 0;
768 return 0;
769 }
770
771 erq->length = min_t(size_t, erq->length,
772 wdev->wext.keys->params[idx].key_len);
773 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
774 erq->flags |= IW_ENCODE_ENABLED;
775
776 return 0;
777}
778
779static int cfg80211_wext_siwfreq(struct net_device *dev,
780 struct iw_request_info *info,
781 struct iw_freq *wextfreq, char *extra)
782{
783 struct wireless_dev *wdev = dev->ieee80211_ptr;
784 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
785 struct cfg80211_chan_def chandef = {
786 .width = NL80211_CHAN_WIDTH_20_NOHT,
787 };
788 int freq, ret;
789
790 wiphy_lock(&rdev->wiphy);
791
792 switch (wdev->iftype) {
793 case NL80211_IFTYPE_STATION:
794 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
795 break;
796 case NL80211_IFTYPE_ADHOC:
797 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
798 break;
799 case NL80211_IFTYPE_MONITOR:
800 freq = cfg80211_wext_freq(wextfreq);
801 if (freq < 0) {
802 ret = freq;
803 break;
804 }
805 if (freq == 0) {
806 ret = -EINVAL;
807 break;
808 }
809 chandef.center_freq1 = freq;
810 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
811 if (!chandef.chan) {
812 ret = -EINVAL;
813 break;
814 }
815 ret = cfg80211_set_monitor_channel(rdev, &chandef);
816 break;
817 case NL80211_IFTYPE_MESH_POINT:
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_mesh_channel(rdev, wdev, &chandef);
834 break;
835 default:
836 ret = -EOPNOTSUPP;
837 break;
838 }
839
840 wiphy_unlock(&rdev->wiphy);
841
842 return ret;
843}
844
845static int cfg80211_wext_giwfreq(struct net_device *dev,
846 struct iw_request_info *info,
847 struct iw_freq *freq, char *extra)
848{
849 struct wireless_dev *wdev = dev->ieee80211_ptr;
850 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
851 struct cfg80211_chan_def chandef = {};
852 int ret;
853
854 wiphy_lock(&rdev->wiphy);
855 switch (wdev->iftype) {
856 case NL80211_IFTYPE_STATION:
857 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
858 break;
859 case NL80211_IFTYPE_ADHOC:
860 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
861 break;
862 case NL80211_IFTYPE_MONITOR:
863 if (!rdev->ops->get_channel) {
864 ret = -EINVAL;
865 break;
866 }
867
868 ret = rdev_get_channel(rdev, wdev, &chandef);
869 if (ret)
870 break;
871 freq->m = chandef.chan->center_freq;
872 freq->e = 6;
873 ret = 0;
874 break;
875 default:
876 ret = -EINVAL;
877 break;
878 }
879
880 wiphy_unlock(&rdev->wiphy);
881
882 return ret;
883}
884
885static int cfg80211_wext_siwtxpower(struct net_device *dev,
886 struct iw_request_info *info,
887 union iwreq_data *data, char *extra)
888{
889 struct wireless_dev *wdev = dev->ieee80211_ptr;
890 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
891 enum nl80211_tx_power_setting type;
892 int dbm = 0;
893 int ret;
894
895 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
896 return -EINVAL;
897 if (data->txpower.flags & IW_TXPOW_RANGE)
898 return -EINVAL;
899
900 if (!rdev->ops->set_tx_power)
901 return -EOPNOTSUPP;
902
903 /* only change when not disabling */
904 if (!data->txpower.disabled) {
905 rfkill_set_sw_state(rdev->wiphy.rfkill, false);
906
907 if (data->txpower.fixed) {
908 /*
909 * wext doesn't support negative values, see
910 * below where it's for automatic
911 */
912 if (data->txpower.value < 0)
913 return -EINVAL;
914 dbm = data->txpower.value;
915 type = NL80211_TX_POWER_FIXED;
916 /* TODO: do regulatory check! */
917 } else {
918 /*
919 * Automatic power level setting, max being the value
920 * passed in from userland.
921 */
922 if (data->txpower.value < 0) {
923 type = NL80211_TX_POWER_AUTOMATIC;
924 } else {
925 dbm = data->txpower.value;
926 type = NL80211_TX_POWER_LIMITED;
927 }
928 }
929 } else {
930 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
931 schedule_work(&rdev->rfkill_block);
932 return 0;
933 }
934
935 wiphy_lock(&rdev->wiphy);
936 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
937 wiphy_unlock(&rdev->wiphy);
938
939 return ret;
940}
941
942static int cfg80211_wext_giwtxpower(struct net_device *dev,
943 struct iw_request_info *info,
944 union iwreq_data *data, char *extra)
945{
946 struct wireless_dev *wdev = dev->ieee80211_ptr;
947 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
948 int err, val;
949
950 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
951 return -EINVAL;
952 if (data->txpower.flags & IW_TXPOW_RANGE)
953 return -EINVAL;
954
955 if (!rdev->ops->get_tx_power)
956 return -EOPNOTSUPP;
957
958 wiphy_lock(&rdev->wiphy);
959 err = rdev_get_tx_power(rdev, wdev, &val);
960 wiphy_unlock(&rdev->wiphy);
961 if (err)
962 return err;
963
964 /* well... oh well */
965 data->txpower.fixed = 1;
966 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
967 data->txpower.value = val;
968 data->txpower.flags = IW_TXPOW_DBM;
969
970 return 0;
971}
972
973static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
974 s32 auth_alg)
975{
976 int nr_alg = 0;
977
978 if (!auth_alg)
979 return -EINVAL;
980
981 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
982 IW_AUTH_ALG_SHARED_KEY |
983 IW_AUTH_ALG_LEAP))
984 return -EINVAL;
985
986 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
987 nr_alg++;
988 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
989 }
990
991 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
992 nr_alg++;
993 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
994 }
995
996 if (auth_alg & IW_AUTH_ALG_LEAP) {
997 nr_alg++;
998 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
999 }
1000
1001 if (nr_alg > 1)
1002 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1003
1004 return 0;
1005}
1006
1007static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
1008{
1009 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
1010 IW_AUTH_WPA_VERSION_WPA2|
1011 IW_AUTH_WPA_VERSION_DISABLED))
1012 return -EINVAL;
1013
1014 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
1015 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
1016 IW_AUTH_WPA_VERSION_WPA2)))
1017 return -EINVAL;
1018
1019 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
1020 wdev->wext.connect.crypto.wpa_versions &=
1021 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
1022
1023 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
1024 wdev->wext.connect.crypto.wpa_versions |=
1025 NL80211_WPA_VERSION_1;
1026
1027 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
1028 wdev->wext.connect.crypto.wpa_versions |=
1029 NL80211_WPA_VERSION_2;
1030
1031 return 0;
1032}
1033
1034static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
1035{
1036 if (cipher & IW_AUTH_CIPHER_WEP40)
1037 wdev->wext.connect.crypto.cipher_group =
1038 WLAN_CIPHER_SUITE_WEP40;
1039 else if (cipher & IW_AUTH_CIPHER_WEP104)
1040 wdev->wext.connect.crypto.cipher_group =
1041 WLAN_CIPHER_SUITE_WEP104;
1042 else if (cipher & IW_AUTH_CIPHER_TKIP)
1043 wdev->wext.connect.crypto.cipher_group =
1044 WLAN_CIPHER_SUITE_TKIP;
1045 else if (cipher & IW_AUTH_CIPHER_CCMP)
1046 wdev->wext.connect.crypto.cipher_group =
1047 WLAN_CIPHER_SUITE_CCMP;
1048 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1049 wdev->wext.connect.crypto.cipher_group =
1050 WLAN_CIPHER_SUITE_AES_CMAC;
1051 else if (cipher & IW_AUTH_CIPHER_NONE)
1052 wdev->wext.connect.crypto.cipher_group = 0;
1053 else
1054 return -EINVAL;
1055
1056 return 0;
1057}
1058
1059static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1060{
1061 int nr_ciphers = 0;
1062 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1063
1064 if (cipher & IW_AUTH_CIPHER_WEP40) {
1065 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1066 nr_ciphers++;
1067 }
1068
1069 if (cipher & IW_AUTH_CIPHER_WEP104) {
1070 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1071 nr_ciphers++;
1072 }
1073
1074 if (cipher & IW_AUTH_CIPHER_TKIP) {
1075 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1076 nr_ciphers++;
1077 }
1078
1079 if (cipher & IW_AUTH_CIPHER_CCMP) {
1080 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1081 nr_ciphers++;
1082 }
1083
1084 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1085 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1086 nr_ciphers++;
1087 }
1088
1089 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1090
1091 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1092
1093 return 0;
1094}
1095
1096
1097static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1098{
1099 int nr_akm_suites = 0;
1100
1101 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1102 IW_AUTH_KEY_MGMT_PSK))
1103 return -EINVAL;
1104
1105 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1106 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1107 WLAN_AKM_SUITE_8021X;
1108 nr_akm_suites++;
1109 }
1110
1111 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1112 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1113 WLAN_AKM_SUITE_PSK;
1114 nr_akm_suites++;
1115 }
1116
1117 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1118
1119 return 0;
1120}
1121
1122static int cfg80211_wext_siwauth(struct net_device *dev,
1123 struct iw_request_info *info,
1124 struct iw_param *data, char *extra)
1125{
1126 struct wireless_dev *wdev = dev->ieee80211_ptr;
1127
1128 if (wdev->iftype != NL80211_IFTYPE_STATION)
1129 return -EOPNOTSUPP;
1130
1131 switch (data->flags & IW_AUTH_INDEX) {
1132 case IW_AUTH_PRIVACY_INVOKED:
1133 wdev->wext.connect.privacy = data->value;
1134 return 0;
1135 case IW_AUTH_WPA_VERSION:
1136 return cfg80211_set_wpa_version(wdev, data->value);
1137 case IW_AUTH_CIPHER_GROUP:
1138 return cfg80211_set_cipher_group(wdev, data->value);
1139 case IW_AUTH_KEY_MGMT:
1140 return cfg80211_set_key_mgt(wdev, data->value);
1141 case IW_AUTH_CIPHER_PAIRWISE:
1142 return cfg80211_set_cipher_pairwise(wdev, data->value);
1143 case IW_AUTH_80211_AUTH_ALG:
1144 return cfg80211_set_auth_alg(wdev, data->value);
1145 case IW_AUTH_WPA_ENABLED:
1146 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1147 case IW_AUTH_DROP_UNENCRYPTED:
1148 case IW_AUTH_MFP:
1149 return 0;
1150 default:
1151 return -EOPNOTSUPP;
1152 }
1153}
1154
1155static int cfg80211_wext_giwauth(struct net_device *dev,
1156 struct iw_request_info *info,
1157 struct iw_param *data, char *extra)
1158{
1159 /* XXX: what do we need? */
1160
1161 return -EOPNOTSUPP;
1162}
1163
1164static int cfg80211_wext_siwpower(struct net_device *dev,
1165 struct iw_request_info *info,
1166 struct iw_param *wrq, char *extra)
1167{
1168 struct wireless_dev *wdev = dev->ieee80211_ptr;
1169 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1170 bool ps;
1171 int timeout = wdev->ps_timeout;
1172 int err;
1173
1174 if (wdev->iftype != NL80211_IFTYPE_STATION)
1175 return -EINVAL;
1176
1177 if (!rdev->ops->set_power_mgmt)
1178 return -EOPNOTSUPP;
1179
1180 if (wrq->disabled) {
1181 ps = false;
1182 } else {
1183 switch (wrq->flags & IW_POWER_MODE) {
1184 case IW_POWER_ON: /* If not specified */
1185 case IW_POWER_MODE: /* If set all mask */
1186 case IW_POWER_ALL_R: /* If explicitely state all */
1187 ps = true;
1188 break;
1189 default: /* Otherwise we ignore */
1190 return -EINVAL;
1191 }
1192
1193 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1194 return -EINVAL;
1195
1196 if (wrq->flags & IW_POWER_TIMEOUT)
1197 timeout = wrq->value / 1000;
1198 }
1199
1200 wiphy_lock(&rdev->wiphy);
1201 err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1202 wiphy_unlock(&rdev->wiphy);
1203 if (err)
1204 return err;
1205
1206 wdev->ps = ps;
1207 wdev->ps_timeout = timeout;
1208
1209 return 0;
1210
1211}
1212
1213static int cfg80211_wext_giwpower(struct net_device *dev,
1214 struct iw_request_info *info,
1215 struct iw_param *wrq, char *extra)
1216{
1217 struct wireless_dev *wdev = dev->ieee80211_ptr;
1218
1219 wrq->disabled = !wdev->ps;
1220
1221 return 0;
1222}
1223
1224static int cfg80211_wext_siwrate(struct net_device *dev,
1225 struct iw_request_info *info,
1226 struct iw_param *rate, char *extra)
1227{
1228 struct wireless_dev *wdev = dev->ieee80211_ptr;
1229 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1230 struct cfg80211_bitrate_mask mask;
1231 u32 fixed, maxrate;
1232 struct ieee80211_supported_band *sband;
1233 int band, ridx, ret;
1234 bool match = false;
1235
1236 if (!rdev->ops->set_bitrate_mask)
1237 return -EOPNOTSUPP;
1238
1239 memset(&mask, 0, sizeof(mask));
1240 fixed = 0;
1241 maxrate = (u32)-1;
1242
1243 if (rate->value < 0) {
1244 /* nothing */
1245 } else if (rate->fixed) {
1246 fixed = rate->value / 100000;
1247 } else {
1248 maxrate = rate->value / 100000;
1249 }
1250
1251 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1252 sband = wdev->wiphy->bands[band];
1253 if (sband == NULL)
1254 continue;
1255 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1256 struct ieee80211_rate *srate = &sband->bitrates[ridx];
1257 if (fixed == srate->bitrate) {
1258 mask.control[band].legacy = 1 << ridx;
1259 match = true;
1260 break;
1261 }
1262 if (srate->bitrate <= maxrate) {
1263 mask.control[band].legacy |= 1 << ridx;
1264 match = true;
1265 }
1266 }
1267 }
1268
1269 if (!match)
1270 return -EINVAL;
1271
1272 wiphy_lock(&rdev->wiphy);
1273 ret = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1274 wiphy_unlock(&rdev->wiphy);
1275
1276 return ret;
1277}
1278
1279static int cfg80211_wext_giwrate(struct net_device *dev,
1280 struct iw_request_info *info,
1281 struct iw_param *rate, char *extra)
1282{
1283 struct wireless_dev *wdev = dev->ieee80211_ptr;
1284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1285 struct station_info sinfo = {};
1286 u8 addr[ETH_ALEN];
1287 int err;
1288
1289 if (wdev->iftype != NL80211_IFTYPE_STATION)
1290 return -EOPNOTSUPP;
1291
1292 if (!rdev->ops->get_station)
1293 return -EOPNOTSUPP;
1294
1295 err = 0;
1296 wdev_lock(wdev);
1297 if (wdev->current_bss)
1298 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1299 else
1300 err = -EOPNOTSUPP;
1301 wdev_unlock(wdev);
1302 if (err)
1303 return err;
1304
1305 wiphy_lock(&rdev->wiphy);
1306 err = rdev_get_station(rdev, dev, addr, &sinfo);
1307 wiphy_unlock(&rdev->wiphy);
1308 if (err)
1309 return err;
1310
1311 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1312 err = -EOPNOTSUPP;
1313 goto free;
1314 }
1315
1316 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1317
1318free:
1319 cfg80211_sinfo_release_content(&sinfo);
1320 return err;
1321}
1322
1323/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1324static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1325{
1326 struct wireless_dev *wdev = dev->ieee80211_ptr;
1327 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1328 /* we are under RTNL - globally locked - so can use static structs */
1329 static struct iw_statistics wstats;
1330 static struct station_info sinfo = {};
1331 u8 bssid[ETH_ALEN];
1332 int ret;
1333
1334 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1335 return NULL;
1336
1337 if (!rdev->ops->get_station)
1338 return NULL;
1339
1340 /* Grab BSSID of current BSS, if any */
1341 wdev_lock(wdev);
1342 if (!wdev->current_bss) {
1343 wdev_unlock(wdev);
1344 return NULL;
1345 }
1346 memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1347 wdev_unlock(wdev);
1348
1349 memset(&sinfo, 0, sizeof(sinfo));
1350
1351 wiphy_lock(&rdev->wiphy);
1352 ret = rdev_get_station(rdev, dev, bssid, &sinfo);
1353 wiphy_unlock(&rdev->wiphy);
1354
1355 if (ret)
1356 return NULL;
1357
1358 memset(&wstats, 0, sizeof(wstats));
1359
1360 switch (rdev->wiphy.signal_type) {
1361 case CFG80211_SIGNAL_TYPE_MBM:
1362 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1363 int sig = sinfo.signal;
1364 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1365 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1366 wstats.qual.updated |= IW_QUAL_DBM;
1367 wstats.qual.level = sig;
1368 if (sig < -110)
1369 sig = -110;
1370 else if (sig > -40)
1371 sig = -40;
1372 wstats.qual.qual = sig + 110;
1373 break;
1374 }
1375 fallthrough;
1376 case CFG80211_SIGNAL_TYPE_UNSPEC:
1377 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1378 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1379 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1380 wstats.qual.level = sinfo.signal;
1381 wstats.qual.qual = sinfo.signal;
1382 break;
1383 }
1384 fallthrough;
1385 default:
1386 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1387 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1388 }
1389
1390 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1391 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1392 wstats.discard.misc = sinfo.rx_dropped_misc;
1393 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1394 wstats.discard.retries = sinfo.tx_failed;
1395
1396 cfg80211_sinfo_release_content(&sinfo);
1397
1398 return &wstats;
1399}
1400
1401static int cfg80211_wext_siwap(struct net_device *dev,
1402 struct iw_request_info *info,
1403 struct sockaddr *ap_addr, char *extra)
1404{
1405 struct wireless_dev *wdev = dev->ieee80211_ptr;
1406 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1407 int ret;
1408
1409 wiphy_lock(&rdev->wiphy);
1410 switch (wdev->iftype) {
1411 case NL80211_IFTYPE_ADHOC:
1412 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1413 break;
1414 case NL80211_IFTYPE_STATION:
1415 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1416 break;
1417 default:
1418 ret = -EOPNOTSUPP;
1419 break;
1420 }
1421 wiphy_unlock(&rdev->wiphy);
1422
1423 return ret;
1424}
1425
1426static int cfg80211_wext_giwap(struct net_device *dev,
1427 struct iw_request_info *info,
1428 struct sockaddr *ap_addr, char *extra)
1429{
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_giwap(dev, info, ap_addr, extra);
1438 break;
1439 case NL80211_IFTYPE_STATION:
1440 ret = cfg80211_mgd_wext_giwap(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
1451static int cfg80211_wext_siwessid(struct net_device *dev,
1452 struct iw_request_info *info,
1453 struct iw_point *data, char *ssid)
1454{
1455 struct wireless_dev *wdev = dev->ieee80211_ptr;
1456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1457 int ret;
1458
1459 wiphy_lock(&rdev->wiphy);
1460 switch (wdev->iftype) {
1461 case NL80211_IFTYPE_ADHOC:
1462 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1463 break;
1464 case NL80211_IFTYPE_STATION:
1465 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1466 break;
1467 default:
1468 ret = -EOPNOTSUPP;
1469 break;
1470 }
1471 wiphy_unlock(&rdev->wiphy);
1472
1473 return ret;
1474}
1475
1476static int cfg80211_wext_giwessid(struct net_device *dev,
1477 struct iw_request_info *info,
1478 struct iw_point *data, char *ssid)
1479{
1480 struct wireless_dev *wdev = dev->ieee80211_ptr;
1481 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1482 int ret;
1483
1484 data->flags = 0;
1485 data->length = 0;
1486
1487 wiphy_lock(&rdev->wiphy);
1488 switch (wdev->iftype) {
1489 case NL80211_IFTYPE_ADHOC:
1490 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1491 break;
1492 case NL80211_IFTYPE_STATION:
1493 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1494 break;
1495 default:
1496 ret = -EOPNOTSUPP;
1497 break;
1498 }
1499 wiphy_unlock(&rdev->wiphy);
1500
1501 return ret;
1502}
1503
1504static int cfg80211_wext_siwpmksa(struct net_device *dev,
1505 struct iw_request_info *info,
1506 struct iw_point *data, char *extra)
1507{
1508 struct wireless_dev *wdev = dev->ieee80211_ptr;
1509 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1510 struct cfg80211_pmksa cfg_pmksa;
1511 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1512 int ret;
1513
1514 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1515
1516 if (wdev->iftype != NL80211_IFTYPE_STATION)
1517 return -EINVAL;
1518
1519 cfg_pmksa.bssid = pmksa->bssid.sa_data;
1520 cfg_pmksa.pmkid = pmksa->pmkid;
1521
1522 wiphy_lock(&rdev->wiphy);
1523 switch (pmksa->cmd) {
1524 case IW_PMKSA_ADD:
1525 if (!rdev->ops->set_pmksa) {
1526 ret = -EOPNOTSUPP;
1527 break;
1528 }
1529
1530 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1531 break;
1532 case IW_PMKSA_REMOVE:
1533 if (!rdev->ops->del_pmksa) {
1534 ret = -EOPNOTSUPP;
1535 break;
1536 }
1537
1538 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1539 break;
1540 case IW_PMKSA_FLUSH:
1541 if (!rdev->ops->flush_pmksa) {
1542 ret = -EOPNOTSUPP;
1543 break;
1544 }
1545
1546 ret = rdev_flush_pmksa(rdev, dev);
1547 break;
1548 default:
1549 ret = -EOPNOTSUPP;
1550 break;
1551 }
1552 wiphy_unlock(&rdev->wiphy);
1553
1554 return ret;
1555}
1556
1557#define DEFINE_WEXT_COMPAT_STUB(func, type) \
1558 static int __ ## func(struct net_device *dev, \
1559 struct iw_request_info *info, \
1560 union iwreq_data *wrqu, \
1561 char *extra) \
1562 { \
1563 return func(dev, info, (type *)wrqu, extra); \
1564 }
1565
1566DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char)
1567DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq)
1568DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq)
1569DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32)
1570DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32)
1571DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point)
1572DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr)
1573DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr)
1574DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point)
1575DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point)
1576DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point)
1577DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point)
1578DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param)
1579DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param)
1580DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param)
1581DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param)
1582DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param)
1583DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param)
1584DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param)
1585DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param)
1586DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point)
1587DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point)
1588DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param)
1589DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param)
1590DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point)
1591DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param)
1592DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param)
1593DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point)
1594DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point)
1595
1596static const iw_handler cfg80211_handlers[] = {
1597 [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname,
1598 [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq,
1599 [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq,
1600 [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode,
1601 [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode,
1602 [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange,
1603 [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap,
1604 [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap,
1605 [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme,
1606 [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan,
1607 [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan,
1608 [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid,
1609 [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid,
1610 [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate,
1611 [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate,
1612 [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts,
1613 [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts,
1614 [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag,
1615 [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag,
1616 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower,
1617 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower,
1618 [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry,
1619 [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry,
1620 [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode,
1621 [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode,
1622 [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower,
1623 [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower,
1624 [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie,
1625 [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth,
1626 [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth,
1627 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext,
1628 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa,
1629};
1630
1631const struct iw_handler_def cfg80211_wext_handler = {
1632 .num_standard = ARRAY_SIZE(cfg80211_handlers),
1633 .standard = cfg80211_handlers,
1634 .get_wireless_stats = cfg80211_wireless_stats,
1635};
Linux 6.x block layer and io_uring tree(s)