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printf: Remove unused 'bprintf'
[drm/drm-misc.git] / net / wireless / wext-compat.c
blob90d5c05926673174ee02a2321ee7d3de3f0be691
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * cfg80211 - wext compat code
4 *
5 * This is temporary code until all wireless functionality is migrated
6 * into cfg80211, when that happens all the exports here go away and
7 * we directly assign the wireless handlers of wireless interfaces.
8 *
9 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
10 * Copyright (C) 2019-2023 Intel Corporation
11 */
12
13 #include <linux/export.h>
14 #include <linux/wireless.h>
15 #include <linux/nl80211.h>
16 #include <linux/if_arp.h>
17 #include <linux/etherdevice.h>
18 #include <linux/slab.h>
19 #include <net/iw_handler.h>
20 #include <net/cfg80211.h>
21 #include <net/cfg80211-wext.h>
22 #include "wext-compat.h"
23 #include "core.h"
24 #include "rdev-ops.h"
25
26 int cfg80211_wext_giwname(struct net_device *dev,
27 struct iw_request_info *info,
28 union iwreq_data *wrqu, char *extra)
29 {
30 strcpy(wrqu->name, "IEEE 802.11");
31 return 0;
32 }
33
34 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
35 union iwreq_data *wrqu, char *extra)
36 {
37 __u32 *mode = &wrqu->mode;
38 struct wireless_dev *wdev = dev->ieee80211_ptr;
39 struct cfg80211_registered_device *rdev;
40 struct vif_params vifparams;
41 enum nl80211_iftype type;
42 int ret;
43
44 rdev = wiphy_to_rdev(wdev->wiphy);
45
46 switch (*mode) {
47 case IW_MODE_INFRA:
48 type = NL80211_IFTYPE_STATION;
49 break;
50 case IW_MODE_ADHOC:
51 type = NL80211_IFTYPE_ADHOC;
52 break;
53 case IW_MODE_MONITOR:
54 type = NL80211_IFTYPE_MONITOR;
55 break;
56 default:
57 return -EINVAL;
58 }
59
60 if (type == wdev->iftype)
61 return 0;
62
63 memset(&vifparams, 0, sizeof(vifparams));
64
65 wiphy_lock(wdev->wiphy);
66 ret = cfg80211_change_iface(rdev, dev, type, &vifparams);
67 wiphy_unlock(wdev->wiphy);
68
69 return ret;
70 }
71
72 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
73 union iwreq_data *wrqu, char *extra)
74 {
75 __u32 *mode = &wrqu->mode;
76 struct wireless_dev *wdev = dev->ieee80211_ptr;
77
78 if (!wdev)
79 return -EOPNOTSUPP;
80
81 switch (wdev->iftype) {
82 case NL80211_IFTYPE_AP:
83 *mode = IW_MODE_MASTER;
84 break;
85 case NL80211_IFTYPE_STATION:
86 *mode = IW_MODE_INFRA;
87 break;
88 case NL80211_IFTYPE_ADHOC:
89 *mode = IW_MODE_ADHOC;
90 break;
91 case NL80211_IFTYPE_MONITOR:
92 *mode = IW_MODE_MONITOR;
93 break;
94 case NL80211_IFTYPE_WDS:
95 *mode = IW_MODE_REPEAT;
96 break;
97 case NL80211_IFTYPE_AP_VLAN:
98 *mode = IW_MODE_SECOND; /* FIXME */
99 break;
100 default:
101 *mode = IW_MODE_AUTO;
102 break;
103 }
104 return 0;
105 }
106
107
108 int cfg80211_wext_giwrange(struct net_device *dev,
109 struct iw_request_info *info,
110 union iwreq_data *wrqu, char *extra)
111 {
112 struct iw_point *data = &wrqu->data;
113 struct wireless_dev *wdev = dev->ieee80211_ptr;
114 struct iw_range *range = (struct iw_range *) extra;
115 enum nl80211_band band;
116 int i, c = 0;
117
118 if (!wdev)
119 return -EOPNOTSUPP;
120
121 data->length = sizeof(struct iw_range);
122 memset(range, 0, sizeof(struct iw_range));
123
124 range->we_version_compiled = WIRELESS_EXT;
125 range->we_version_source = 21;
126 range->retry_capa = IW_RETRY_LIMIT;
127 range->retry_flags = IW_RETRY_LIMIT;
128 range->min_retry = 0;
129 range->max_retry = 255;
130 range->min_rts = 0;
131 range->max_rts = 2347;
132 range->min_frag = 256;
133 range->max_frag = 2346;
134
135 range->max_encoding_tokens = 4;
136
137 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
138
139 switch (wdev->wiphy->signal_type) {
140 case CFG80211_SIGNAL_TYPE_NONE:
141 break;
142 case CFG80211_SIGNAL_TYPE_MBM:
143 range->max_qual.level = (u8)-110;
144 range->max_qual.qual = 70;
145 range->avg_qual.qual = 35;
146 range->max_qual.updated |= IW_QUAL_DBM;
147 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
148 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
149 break;
150 case CFG80211_SIGNAL_TYPE_UNSPEC:
151 range->max_qual.level = 100;
152 range->max_qual.qual = 100;
153 range->avg_qual.qual = 50;
154 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
155 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
156 break;
157 }
158
159 range->avg_qual.level = range->max_qual.level / 2;
160 range->avg_qual.noise = range->max_qual.noise / 2;
161 range->avg_qual.updated = range->max_qual.updated;
162
163 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
164 switch (wdev->wiphy->cipher_suites[i]) {
165 case WLAN_CIPHER_SUITE_TKIP:
166 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
167 IW_ENC_CAPA_WPA);
168 break;
169
170 case WLAN_CIPHER_SUITE_CCMP:
171 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
172 IW_ENC_CAPA_WPA2);
173 break;
174
175 case WLAN_CIPHER_SUITE_WEP40:
176 range->encoding_size[range->num_encoding_sizes++] =
177 WLAN_KEY_LEN_WEP40;
178 break;
179
180 case WLAN_CIPHER_SUITE_WEP104:
181 range->encoding_size[range->num_encoding_sizes++] =
182 WLAN_KEY_LEN_WEP104;
183 break;
184 }
185 }
186
187 for (band = 0; band < NUM_NL80211_BANDS; band ++) {
188 struct ieee80211_supported_band *sband;
189
190 sband = wdev->wiphy->bands[band];
191
192 if (!sband)
193 continue;
194
195 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
196 struct ieee80211_channel *chan = &sband->channels[i];
197
198 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
199 range->freq[c].i =
200 ieee80211_frequency_to_channel(
201 chan->center_freq);
202 range->freq[c].m = chan->center_freq;
203 range->freq[c].e = 6;
204 c++;
205 }
206 }
207 }
208 range->num_channels = c;
209 range->num_frequency = c;
210
211 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
212 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
213 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
214
215 if (wdev->wiphy->max_scan_ssids > 0)
216 range->scan_capa |= IW_SCAN_CAPA_ESSID;
217
218 return 0;
219 }
220
221
222 /**
223 * cfg80211_wext_freq - get wext frequency for non-"auto"
224 * @freq: the wext freq encoding
225 *
226 * Returns: a frequency, or a negative error code, or 0 for auto.
227 */
228 int cfg80211_wext_freq(struct iw_freq *freq)
229 {
230 /*
231 * Parse frequency - return 0 for auto and
232 * -EINVAL for impossible things.
233 */
234 if (freq->e == 0) {
235 enum nl80211_band band = NL80211_BAND_2GHZ;
236 if (freq->m < 0)
237 return 0;
238 if (freq->m > 14)
239 band = NL80211_BAND_5GHZ;
240 return ieee80211_channel_to_frequency(freq->m, band);
241 } else {
242 int i, div = 1000000;
243 for (i = 0; i < freq->e; i++)
244 div /= 10;
245 if (div <= 0)
246 return -EINVAL;
247 return freq->m / div;
248 }
249 }
250
251 int cfg80211_wext_siwrts(struct net_device *dev,
252 struct iw_request_info *info,
253 union iwreq_data *wrqu, char *extra)
254 {
255 struct iw_param *rts = &wrqu->rts;
256 struct wireless_dev *wdev = dev->ieee80211_ptr;
257 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
258 u32 orts = wdev->wiphy->rts_threshold;
259 int err;
260
261 wiphy_lock(&rdev->wiphy);
262 if (rts->disabled || !rts->fixed) {
263 wdev->wiphy->rts_threshold = (u32) -1;
264 } else if (rts->value < 0) {
265 err = -EINVAL;
266 goto out;
267 } else {
268 wdev->wiphy->rts_threshold = rts->value;
269 }
270
271 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
272
273 if (err)
274 wdev->wiphy->rts_threshold = orts;
275
276 out:
277 wiphy_unlock(&rdev->wiphy);
278 return err;
279 }
280
281 int cfg80211_wext_giwrts(struct net_device *dev,
282 struct iw_request_info *info,
283 union iwreq_data *wrqu, char *extra)
284 {
285 struct iw_param *rts = &wrqu->rts;
286 struct wireless_dev *wdev = dev->ieee80211_ptr;
287
288 rts->value = wdev->wiphy->rts_threshold;
289 rts->disabled = rts->value == (u32) -1;
290 rts->fixed = 1;
291
292 return 0;
293 }
294
295 int cfg80211_wext_siwfrag(struct net_device *dev,
296 struct iw_request_info *info,
297 union iwreq_data *wrqu, char *extra)
298 {
299 struct iw_param *frag = &wrqu->frag;
300 struct wireless_dev *wdev = dev->ieee80211_ptr;
301 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
302 u32 ofrag = wdev->wiphy->frag_threshold;
303 int err;
304
305 wiphy_lock(&rdev->wiphy);
306 if (frag->disabled || !frag->fixed) {
307 wdev->wiphy->frag_threshold = (u32) -1;
308 } else if (frag->value < 256) {
309 err = -EINVAL;
310 goto out;
311 } else {
312 /* Fragment length must be even, so strip LSB. */
313 wdev->wiphy->frag_threshold = frag->value & ~0x1;
314 }
315
316 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
317 if (err)
318 wdev->wiphy->frag_threshold = ofrag;
319 out:
320 wiphy_unlock(&rdev->wiphy);
321
322 return err;
323 }
324
325 int cfg80211_wext_giwfrag(struct net_device *dev,
326 struct iw_request_info *info,
327 union iwreq_data *wrqu, char *extra)
328 {
329 struct iw_param *frag = &wrqu->frag;
330 struct wireless_dev *wdev = dev->ieee80211_ptr;
331
332 frag->value = wdev->wiphy->frag_threshold;
333 frag->disabled = frag->value == (u32) -1;
334 frag->fixed = 1;
335
336 return 0;
337 }
338
339 static int cfg80211_wext_siwretry(struct net_device *dev,
340 struct iw_request_info *info,
341 union iwreq_data *wrqu, char *extra)
342 {
343 struct iw_param *retry = &wrqu->retry;
344 struct wireless_dev *wdev = dev->ieee80211_ptr;
345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
346 u32 changed = 0;
347 u8 olong = wdev->wiphy->retry_long;
348 u8 oshort = wdev->wiphy->retry_short;
349 int err;
350
351 if (retry->disabled || retry->value < 1 || retry->value > 255 ||
352 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
353 return -EINVAL;
354
355 wiphy_lock(&rdev->wiphy);
356 if (retry->flags & IW_RETRY_LONG) {
357 wdev->wiphy->retry_long = retry->value;
358 changed |= WIPHY_PARAM_RETRY_LONG;
359 } else if (retry->flags & IW_RETRY_SHORT) {
360 wdev->wiphy->retry_short = retry->value;
361 changed |= WIPHY_PARAM_RETRY_SHORT;
362 } else {
363 wdev->wiphy->retry_short = retry->value;
364 wdev->wiphy->retry_long = retry->value;
365 changed |= WIPHY_PARAM_RETRY_LONG;
366 changed |= WIPHY_PARAM_RETRY_SHORT;
367 }
368
369 err = rdev_set_wiphy_params(rdev, changed);
370 if (err) {
371 wdev->wiphy->retry_short = oshort;
372 wdev->wiphy->retry_long = olong;
373 }
374 wiphy_unlock(&rdev->wiphy);
375
376 return err;
377 }
378
379 int cfg80211_wext_giwretry(struct net_device *dev,
380 struct iw_request_info *info,
381 union iwreq_data *wrqu, char *extra)
382 {
383 struct iw_param *retry = &wrqu->retry;
384 struct wireless_dev *wdev = dev->ieee80211_ptr;
385
386 retry->disabled = 0;
387
388 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
389 /*
390 * First return short value, iwconfig will ask long value
391 * later if needed
392 */
393 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
394 retry->value = wdev->wiphy->retry_short;
395 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
396 retry->flags |= IW_RETRY_LONG;
397
398 return 0;
399 }
400
401 if (retry->flags & IW_RETRY_LONG) {
402 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
403 retry->value = wdev->wiphy->retry_long;
404 }
405
406 return 0;
407 }
408
409 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
410 struct net_device *dev, bool pairwise,
411 const u8 *addr, bool remove, bool tx_key,
412 int idx, struct key_params *params)
413 {
414 struct wireless_dev *wdev = dev->ieee80211_ptr;
415 int err, i;
416 bool rejoin = false;
417
418 if (wdev->valid_links)
419 return -EINVAL;
420
421 if (pairwise && !addr)
422 return -EINVAL;
423
424 /*
425 * In many cases we won't actually need this, but it's better
426 * to do it first in case the allocation fails. Don't use wext.
427 */
428 if (!wdev->wext.keys) {
429 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
430 GFP_KERNEL);
431 if (!wdev->wext.keys)
432 return -ENOMEM;
433 for (i = 0; i < 4; i++)
434 wdev->wext.keys->params[i].key =
435 wdev->wext.keys->data[i];
436 }
437
438 if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
439 wdev->iftype != NL80211_IFTYPE_STATION)
440 return -EOPNOTSUPP;
441
442 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
443 if (!wdev->connected)
444 return -ENOLINK;
445
446 if (!rdev->ops->set_default_mgmt_key)
447 return -EOPNOTSUPP;
448
449 if (idx < 4 || idx > 5)
450 return -EINVAL;
451 } else if (idx < 0 || idx > 3)
452 return -EINVAL;
453
454 if (remove) {
455 err = 0;
456 if (wdev->connected ||
457 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
458 wdev->u.ibss.current_bss)) {
459 /*
460 * If removing the current TX key, we will need to
461 * join a new IBSS without the privacy bit clear.
462 */
463 if (idx == wdev->wext.default_key &&
464 wdev->iftype == NL80211_IFTYPE_ADHOC) {
465 cfg80211_leave_ibss(rdev, wdev->netdev, true);
466 rejoin = true;
467 }
468
469 if (!pairwise && addr &&
470 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
471 err = -ENOENT;
472 else
473 err = rdev_del_key(rdev, dev, -1, idx, pairwise,
474 addr);
475 }
476 wdev->wext.connect.privacy = false;
477 /*
478 * Applications using wireless extensions expect to be
479 * able to delete keys that don't exist, so allow that.
480 */
481 if (err == -ENOENT)
482 err = 0;
483 if (!err) {
484 if (!addr && idx < 4) {
485 memset(wdev->wext.keys->data[idx], 0,
486 sizeof(wdev->wext.keys->data[idx]));
487 wdev->wext.keys->params[idx].key_len = 0;
488 wdev->wext.keys->params[idx].cipher = 0;
489 }
490 if (idx == wdev->wext.default_key)
491 wdev->wext.default_key = -1;
492 else if (idx == wdev->wext.default_mgmt_key)
493 wdev->wext.default_mgmt_key = -1;
494 }
495
496 if (!err && rejoin)
497 err = cfg80211_ibss_wext_join(rdev, wdev);
498
499 return err;
500 }
501
502 if (addr)
503 tx_key = false;
504
505 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
506 return -EINVAL;
507
508 err = 0;
509 if (wdev->connected ||
510 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
511 wdev->u.ibss.current_bss))
512 err = rdev_add_key(rdev, dev, -1, idx, pairwise, addr, params);
513 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
514 params->cipher != WLAN_CIPHER_SUITE_WEP104)
515 return -EINVAL;
516 if (err)
517 return err;
518
519 /*
520 * We only need to store WEP keys, since they're the only keys that
521 * can be set before a connection is established and persist after
522 * disconnecting.
523 */
524 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
525 params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
526 wdev->wext.keys->params[idx] = *params;
527 memcpy(wdev->wext.keys->data[idx],
528 params->key, params->key_len);
529 wdev->wext.keys->params[idx].key =
530 wdev->wext.keys->data[idx];
531 }
532
533 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
534 params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
535 (tx_key || (!addr && wdev->wext.default_key == -1))) {
536 if (wdev->connected ||
537 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
538 wdev->u.ibss.current_bss)) {
539 /*
540 * If we are getting a new TX key from not having
541 * had one before we need to join a new IBSS with
542 * the privacy bit set.
543 */
544 if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
545 wdev->wext.default_key == -1) {
546 cfg80211_leave_ibss(rdev, wdev->netdev, true);
547 rejoin = true;
548 }
549 err = rdev_set_default_key(rdev, dev, -1, idx, true,
550 true);
551 }
552 if (!err) {
553 wdev->wext.default_key = idx;
554 if (rejoin)
555 err = cfg80211_ibss_wext_join(rdev, wdev);
556 }
557 return err;
558 }
559
560 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
561 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
562 if (wdev->connected ||
563 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
564 wdev->u.ibss.current_bss))
565 err = rdev_set_default_mgmt_key(rdev, dev, -1, idx);
566 if (!err)
567 wdev->wext.default_mgmt_key = idx;
568 return err;
569 }
570
571 return 0;
572 }
573
574 static int cfg80211_wext_siwencode(struct net_device *dev,
575 struct iw_request_info *info,
576 union iwreq_data *wrqu, char *keybuf)
577 {
578 struct iw_point *erq = &wrqu->encoding;
579 struct wireless_dev *wdev = dev->ieee80211_ptr;
580 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
581 int idx, err;
582 bool remove = false;
583 struct key_params params;
584
585 if (wdev->iftype != NL80211_IFTYPE_STATION &&
586 wdev->iftype != NL80211_IFTYPE_ADHOC)
587 return -EOPNOTSUPP;
588
589 /* no use -- only MFP (set_default_mgmt_key) is optional */
590 if (!rdev->ops->del_key ||
591 !rdev->ops->add_key ||
592 !rdev->ops->set_default_key)
593 return -EOPNOTSUPP;
594
595 wiphy_lock(&rdev->wiphy);
596 if (wdev->valid_links) {
597 err = -EOPNOTSUPP;
598 goto out;
599 }
600
601 idx = erq->flags & IW_ENCODE_INDEX;
602 if (idx == 0) {
603 idx = wdev->wext.default_key;
604 if (idx < 0)
605 idx = 0;
606 } else if (idx < 1 || idx > 4) {
607 err = -EINVAL;
608 goto out;
609 } else {
610 idx--;
611 }
612
613 if (erq->flags & IW_ENCODE_DISABLED)
614 remove = true;
615 else if (erq->length == 0) {
616 /* No key data - just set the default TX key index */
617 err = 0;
618 if (wdev->connected ||
619 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
620 wdev->u.ibss.current_bss))
621 err = rdev_set_default_key(rdev, dev, -1, idx, true,
622 true);
623 if (!err)
624 wdev->wext.default_key = idx;
625 goto out;
626 }
627
628 memset(&params, 0, sizeof(params));
629 params.key = keybuf;
630 params.key_len = erq->length;
631 if (erq->length == 5) {
632 params.cipher = WLAN_CIPHER_SUITE_WEP40;
633 } else if (erq->length == 13) {
634 params.cipher = WLAN_CIPHER_SUITE_WEP104;
635 } else if (!remove) {
636 err = -EINVAL;
637 goto out;
638 }
639
640 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
641 wdev->wext.default_key == -1,
642 idx, &params);
643 out:
644 wiphy_unlock(&rdev->wiphy);
645
646 return err;
647 }
648
649 static int cfg80211_wext_siwencodeext(struct net_device *dev,
650 struct iw_request_info *info,
651 union iwreq_data *wrqu, char *extra)
652 {
653 struct iw_point *erq = &wrqu->encoding;
654 struct wireless_dev *wdev = dev->ieee80211_ptr;
655 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
656 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
657 const u8 *addr;
658 int idx;
659 bool remove = false;
660 struct key_params params;
661 u32 cipher;
662 int ret;
663
664 if (wdev->iftype != NL80211_IFTYPE_STATION &&
665 wdev->iftype != NL80211_IFTYPE_ADHOC)
666 return -EOPNOTSUPP;
667
668 /* no use -- only MFP (set_default_mgmt_key) is optional */
669 if (!rdev->ops->del_key ||
670 !rdev->ops->add_key ||
671 !rdev->ops->set_default_key)
672 return -EOPNOTSUPP;
673
674 if (wdev->valid_links)
675 return -EOPNOTSUPP;
676
677 switch (ext->alg) {
678 case IW_ENCODE_ALG_NONE:
679 remove = true;
680 cipher = 0;
681 break;
682 case IW_ENCODE_ALG_WEP:
683 if (ext->key_len == 5)
684 cipher = WLAN_CIPHER_SUITE_WEP40;
685 else if (ext->key_len == 13)
686 cipher = WLAN_CIPHER_SUITE_WEP104;
687 else
688 return -EINVAL;
689 break;
690 case IW_ENCODE_ALG_TKIP:
691 cipher = WLAN_CIPHER_SUITE_TKIP;
692 break;
693 case IW_ENCODE_ALG_CCMP:
694 cipher = WLAN_CIPHER_SUITE_CCMP;
695 break;
696 case IW_ENCODE_ALG_AES_CMAC:
697 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
698 break;
699 default:
700 return -EOPNOTSUPP;
701 }
702
703 if (erq->flags & IW_ENCODE_DISABLED)
704 remove = true;
705
706 idx = erq->flags & IW_ENCODE_INDEX;
707 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
708 if (idx < 4 || idx > 5) {
709 idx = wdev->wext.default_mgmt_key;
710 if (idx < 0)
711 return -EINVAL;
712 } else
713 idx--;
714 } else {
715 if (idx < 1 || idx > 4) {
716 idx = wdev->wext.default_key;
717 if (idx < 0)
718 return -EINVAL;
719 } else
720 idx--;
721 }
722
723 addr = ext->addr.sa_data;
724 if (is_broadcast_ether_addr(addr))
725 addr = NULL;
726
727 memset(&params, 0, sizeof(params));
728 params.key = ext->key;
729 params.key_len = ext->key_len;
730 params.cipher = cipher;
731
732 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
733 params.seq = ext->rx_seq;
734 params.seq_len = 6;
735 }
736
737 wiphy_lock(wdev->wiphy);
738 ret = cfg80211_set_encryption(
739 rdev, dev,
740 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
741 addr, remove,
742 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
743 idx, &params);
744 wiphy_unlock(wdev->wiphy);
745
746 return ret;
747 }
748
749 static int cfg80211_wext_giwencode(struct net_device *dev,
750 struct iw_request_info *info,
751 union iwreq_data *wrqu, char *keybuf)
752 {
753 struct iw_point *erq = &wrqu->encoding;
754 struct wireless_dev *wdev = dev->ieee80211_ptr;
755 int idx;
756
757 if (wdev->iftype != NL80211_IFTYPE_STATION &&
758 wdev->iftype != NL80211_IFTYPE_ADHOC)
759 return -EOPNOTSUPP;
760
761 idx = erq->flags & IW_ENCODE_INDEX;
762 if (idx == 0) {
763 idx = wdev->wext.default_key;
764 if (idx < 0)
765 idx = 0;
766 } else if (idx < 1 || idx > 4)
767 return -EINVAL;
768 else
769 idx--;
770
771 erq->flags = idx + 1;
772
773 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
774 erq->flags |= IW_ENCODE_DISABLED;
775 erq->length = 0;
776 return 0;
777 }
778
779 erq->length = min_t(size_t, erq->length,
780 wdev->wext.keys->params[idx].key_len);
781 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
782 erq->flags |= IW_ENCODE_ENABLED;
783
784 return 0;
785 }
786
787 static int cfg80211_wext_siwfreq(struct net_device *dev,
788 struct iw_request_info *info,
789 union iwreq_data *wrqu, char *extra)
790 {
791 struct iw_freq *wextfreq = &wrqu->freq;
792 struct wireless_dev *wdev = dev->ieee80211_ptr;
793 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
794 struct cfg80211_chan_def chandef = {
795 .width = NL80211_CHAN_WIDTH_20_NOHT,
796 };
797 int freq, ret;
798
799 wiphy_lock(&rdev->wiphy);
800
801 switch (wdev->iftype) {
802 case NL80211_IFTYPE_STATION:
803 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
804 break;
805 case NL80211_IFTYPE_ADHOC:
806 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
807 break;
808 case NL80211_IFTYPE_MONITOR:
809 freq = cfg80211_wext_freq(wextfreq);
810 if (freq < 0) {
811 ret = freq;
812 break;
813 }
814 if (freq == 0) {
815 ret = -EINVAL;
816 break;
817 }
818 chandef.center_freq1 = freq;
819 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
820 if (!chandef.chan) {
821 ret = -EINVAL;
822 break;
823 }
824 ret = cfg80211_set_monitor_channel(rdev, dev, &chandef);
825 break;
826 case NL80211_IFTYPE_MESH_POINT:
827 freq = cfg80211_wext_freq(wextfreq);
828 if (freq < 0) {
829 ret = freq;
830 break;
831 }
832 if (freq == 0) {
833 ret = -EINVAL;
834 break;
835 }
836 chandef.center_freq1 = freq;
837 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
838 if (!chandef.chan) {
839 ret = -EINVAL;
840 break;
841 }
842 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
843 break;
844 default:
845 ret = -EOPNOTSUPP;
846 break;
847 }
848
849 wiphy_unlock(&rdev->wiphy);
850
851 return ret;
852 }
853
854 static int cfg80211_wext_giwfreq(struct net_device *dev,
855 struct iw_request_info *info,
856 union iwreq_data *wrqu, char *extra)
857 {
858 struct iw_freq *freq = &wrqu->freq;
859 struct wireless_dev *wdev = dev->ieee80211_ptr;
860 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
861 struct cfg80211_chan_def chandef = {};
862 int ret;
863
864 wiphy_lock(&rdev->wiphy);
865 switch (wdev->iftype) {
866 case NL80211_IFTYPE_STATION:
867 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
868 break;
869 case NL80211_IFTYPE_ADHOC:
870 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
871 break;
872 case NL80211_IFTYPE_MONITOR:
873 if (!rdev->ops->get_channel) {
874 ret = -EINVAL;
875 break;
876 }
877
878 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
879 if (ret)
880 break;
881 freq->m = chandef.chan->center_freq;
882 freq->e = 6;
883 ret = 0;
884 break;
885 default:
886 ret = -EINVAL;
887 break;
888 }
889
890 wiphy_unlock(&rdev->wiphy);
891
892 return ret;
893 }
894
895 static int cfg80211_wext_siwtxpower(struct net_device *dev,
896 struct iw_request_info *info,
897 union iwreq_data *data, char *extra)
898 {
899 struct wireless_dev *wdev = dev->ieee80211_ptr;
900 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
901 enum nl80211_tx_power_setting type;
902 int dbm = 0;
903 int ret;
904
905 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
906 return -EINVAL;
907 if (data->txpower.flags & IW_TXPOW_RANGE)
908 return -EINVAL;
909
910 if (!rdev->ops->set_tx_power)
911 return -EOPNOTSUPP;
912
913 /* only change when not disabling */
914 if (!data->txpower.disabled) {
915 rfkill_set_sw_state(rdev->wiphy.rfkill, false);
916
917 if (data->txpower.fixed) {
918 /*
919 * wext doesn't support negative values, see
920 * below where it's for automatic
921 */
922 if (data->txpower.value < 0)
923 return -EINVAL;
924 dbm = data->txpower.value;
925 type = NL80211_TX_POWER_FIXED;
926 /* TODO: do regulatory check! */
927 } else {
928 /*
929 * Automatic power level setting, max being the value
930 * passed in from userland.
931 */
932 if (data->txpower.value < 0) {
933 type = NL80211_TX_POWER_AUTOMATIC;
934 } else {
935 dbm = data->txpower.value;
936 type = NL80211_TX_POWER_LIMITED;
937 }
938 }
939 } else {
940 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
941 schedule_work(&rdev->rfkill_block);
942 return 0;
943 }
944
945 wiphy_lock(&rdev->wiphy);
946 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
947 wiphy_unlock(&rdev->wiphy);
948
949 return ret;
950 }
951
952 static int cfg80211_wext_giwtxpower(struct net_device *dev,
953 struct iw_request_info *info,
954 union iwreq_data *data, char *extra)
955 {
956 struct wireless_dev *wdev = dev->ieee80211_ptr;
957 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
958 int err, val;
959
960 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
961 return -EINVAL;
962 if (data->txpower.flags & IW_TXPOW_RANGE)
963 return -EINVAL;
964
965 if (!rdev->ops->get_tx_power)
966 return -EOPNOTSUPP;
967
968 wiphy_lock(&rdev->wiphy);
969 err = rdev_get_tx_power(rdev, wdev, &val);
970 wiphy_unlock(&rdev->wiphy);
971 if (err)
972 return err;
973
974 /* well... oh well */
975 data->txpower.fixed = 1;
976 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
977 data->txpower.value = val;
978 data->txpower.flags = IW_TXPOW_DBM;
979
980 return 0;
981 }
982
983 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
984 s32 auth_alg)
985 {
986 int nr_alg = 0;
987
988 if (!auth_alg)
989 return -EINVAL;
990
991 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
992 IW_AUTH_ALG_SHARED_KEY |
993 IW_AUTH_ALG_LEAP))
994 return -EINVAL;
995
996 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
997 nr_alg++;
998 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
999 }
1000
1001 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
1002 nr_alg++;
1003 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1004 }
1005
1006 if (auth_alg & IW_AUTH_ALG_LEAP) {
1007 nr_alg++;
1008 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
1009 }
1010
1011 if (nr_alg > 1)
1012 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1013
1014 return 0;
1015 }
1016
1017 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
1018 {
1019 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
1020 IW_AUTH_WPA_VERSION_WPA2|
1021 IW_AUTH_WPA_VERSION_DISABLED))
1022 return -EINVAL;
1023
1024 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
1025 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
1026 IW_AUTH_WPA_VERSION_WPA2)))
1027 return -EINVAL;
1028
1029 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
1030 wdev->wext.connect.crypto.wpa_versions &=
1031 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
1032
1033 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
1034 wdev->wext.connect.crypto.wpa_versions |=
1035 NL80211_WPA_VERSION_1;
1036
1037 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
1038 wdev->wext.connect.crypto.wpa_versions |=
1039 NL80211_WPA_VERSION_2;
1040
1041 return 0;
1042 }
1043
1044 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
1045 {
1046 if (cipher & IW_AUTH_CIPHER_WEP40)
1047 wdev->wext.connect.crypto.cipher_group =
1048 WLAN_CIPHER_SUITE_WEP40;
1049 else if (cipher & IW_AUTH_CIPHER_WEP104)
1050 wdev->wext.connect.crypto.cipher_group =
1051 WLAN_CIPHER_SUITE_WEP104;
1052 else if (cipher & IW_AUTH_CIPHER_TKIP)
1053 wdev->wext.connect.crypto.cipher_group =
1054 WLAN_CIPHER_SUITE_TKIP;
1055 else if (cipher & IW_AUTH_CIPHER_CCMP)
1056 wdev->wext.connect.crypto.cipher_group =
1057 WLAN_CIPHER_SUITE_CCMP;
1058 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1059 wdev->wext.connect.crypto.cipher_group =
1060 WLAN_CIPHER_SUITE_AES_CMAC;
1061 else if (cipher & IW_AUTH_CIPHER_NONE)
1062 wdev->wext.connect.crypto.cipher_group = 0;
1063 else
1064 return -EINVAL;
1065
1066 return 0;
1067 }
1068
1069 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1070 {
1071 int nr_ciphers = 0;
1072 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1073
1074 if (cipher & IW_AUTH_CIPHER_WEP40) {
1075 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1076 nr_ciphers++;
1077 }
1078
1079 if (cipher & IW_AUTH_CIPHER_WEP104) {
1080 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1081 nr_ciphers++;
1082 }
1083
1084 if (cipher & IW_AUTH_CIPHER_TKIP) {
1085 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1086 nr_ciphers++;
1087 }
1088
1089 if (cipher & IW_AUTH_CIPHER_CCMP) {
1090 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1091 nr_ciphers++;
1092 }
1093
1094 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1095 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1096 nr_ciphers++;
1097 }
1098
1099 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1100
1101 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1102
1103 return 0;
1104 }
1105
1106
1107 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1108 {
1109 int nr_akm_suites = 0;
1110
1111 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1112 IW_AUTH_KEY_MGMT_PSK))
1113 return -EINVAL;
1114
1115 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1116 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1117 WLAN_AKM_SUITE_8021X;
1118 nr_akm_suites++;
1119 }
1120
1121 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1122 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1123 WLAN_AKM_SUITE_PSK;
1124 nr_akm_suites++;
1125 }
1126
1127 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1128
1129 return 0;
1130 }
1131
1132 static int cfg80211_wext_siwauth(struct net_device *dev,
1133 struct iw_request_info *info,
1134 union iwreq_data *wrqu, char *extra)
1135 {
1136 struct iw_param *data = &wrqu->param;
1137 struct wireless_dev *wdev = dev->ieee80211_ptr;
1138
1139 if (wdev->iftype != NL80211_IFTYPE_STATION)
1140 return -EOPNOTSUPP;
1141
1142 switch (data->flags & IW_AUTH_INDEX) {
1143 case IW_AUTH_PRIVACY_INVOKED:
1144 wdev->wext.connect.privacy = data->value;
1145 return 0;
1146 case IW_AUTH_WPA_VERSION:
1147 return cfg80211_set_wpa_version(wdev, data->value);
1148 case IW_AUTH_CIPHER_GROUP:
1149 return cfg80211_set_cipher_group(wdev, data->value);
1150 case IW_AUTH_KEY_MGMT:
1151 return cfg80211_set_key_mgt(wdev, data->value);
1152 case IW_AUTH_CIPHER_PAIRWISE:
1153 return cfg80211_set_cipher_pairwise(wdev, data->value);
1154 case IW_AUTH_80211_AUTH_ALG:
1155 return cfg80211_set_auth_alg(wdev, data->value);
1156 case IW_AUTH_WPA_ENABLED:
1157 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1158 case IW_AUTH_DROP_UNENCRYPTED:
1159 case IW_AUTH_MFP:
1160 return 0;
1161 default:
1162 return -EOPNOTSUPP;
1163 }
1164 }
1165
1166 static int cfg80211_wext_giwauth(struct net_device *dev,
1167 struct iw_request_info *info,
1168 union iwreq_data *wrqu, char *extra)
1169 {
1170 /* XXX: what do we need? */
1171
1172 return -EOPNOTSUPP;
1173 }
1174
1175 static int cfg80211_wext_siwpower(struct net_device *dev,
1176 struct iw_request_info *info,
1177 union iwreq_data *wrqu, char *extra)
1178 {
1179 struct iw_param *wrq = &wrqu->power;
1180 struct wireless_dev *wdev = dev->ieee80211_ptr;
1181 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1182 bool ps;
1183 int timeout = wdev->ps_timeout;
1184 int err;
1185
1186 if (wdev->iftype != NL80211_IFTYPE_STATION)
1187 return -EINVAL;
1188
1189 if (!rdev->ops->set_power_mgmt)
1190 return -EOPNOTSUPP;
1191
1192 if (wrq->disabled) {
1193 ps = false;
1194 } else {
1195 switch (wrq->flags & IW_POWER_MODE) {
1196 case IW_POWER_ON: /* If not specified */
1197 case IW_POWER_MODE: /* If set all mask */
1198 case IW_POWER_ALL_R: /* If explicitly state all */
1199 ps = true;
1200 break;
1201 default: /* Otherwise we ignore */
1202 return -EINVAL;
1203 }
1204
1205 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1206 return -EINVAL;
1207
1208 if (wrq->flags & IW_POWER_TIMEOUT)
1209 timeout = wrq->value / 1000;
1210 }
1211
1212 wiphy_lock(&rdev->wiphy);
1213 err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1214 wiphy_unlock(&rdev->wiphy);
1215 if (err)
1216 return err;
1217
1218 wdev->ps = ps;
1219 wdev->ps_timeout = timeout;
1220
1221 return 0;
1222
1223 }
1224
1225 static int cfg80211_wext_giwpower(struct net_device *dev,
1226 struct iw_request_info *info,
1227 union iwreq_data *wrqu, char *extra)
1228 {
1229 struct iw_param *wrq = &wrqu->power;
1230 struct wireless_dev *wdev = dev->ieee80211_ptr;
1231
1232 wrq->disabled = !wdev->ps;
1233
1234 return 0;
1235 }
1236
1237 static int cfg80211_wext_siwrate(struct net_device *dev,
1238 struct iw_request_info *info,
1239 union iwreq_data *wrqu, char *extra)
1240 {
1241 struct iw_param *rate = &wrqu->bitrate;
1242 struct wireless_dev *wdev = dev->ieee80211_ptr;
1243 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1244 struct cfg80211_bitrate_mask mask;
1245 u32 fixed, maxrate;
1246 struct ieee80211_supported_band *sband;
1247 int band, ridx, ret;
1248 bool match = false;
1249
1250 if (!rdev->ops->set_bitrate_mask)
1251 return -EOPNOTSUPP;
1252
1253 memset(&mask, 0, sizeof(mask));
1254 fixed = 0;
1255 maxrate = (u32)-1;
1256
1257 if (rate->value < 0) {
1258 /* nothing */
1259 } else if (rate->fixed) {
1260 fixed = rate->value / 100000;
1261 } else {
1262 maxrate = rate->value / 100000;
1263 }
1264
1265 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1266 sband = wdev->wiphy->bands[band];
1267 if (sband == NULL)
1268 continue;
1269 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1270 struct ieee80211_rate *srate = &sband->bitrates[ridx];
1271 if (fixed == srate->bitrate) {
1272 mask.control[band].legacy = 1 << ridx;
1273 match = true;
1274 break;
1275 }
1276 if (srate->bitrate <= maxrate) {
1277 mask.control[band].legacy |= 1 << ridx;
1278 match = true;
1279 }
1280 }
1281 }
1282
1283 if (!match)
1284 return -EINVAL;
1285
1286 wiphy_lock(&rdev->wiphy);
1287 if (dev->ieee80211_ptr->valid_links)
1288 ret = -EOPNOTSUPP;
1289 else
1290 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask);
1291 wiphy_unlock(&rdev->wiphy);
1292
1293 return ret;
1294 }
1295
1296 static int cfg80211_wext_giwrate(struct net_device *dev,
1297 struct iw_request_info *info,
1298 union iwreq_data *wrqu, char *extra)
1299 {
1300 struct iw_param *rate = &wrqu->bitrate;
1301 struct wireless_dev *wdev = dev->ieee80211_ptr;
1302 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1303 struct station_info sinfo = {};
1304 u8 addr[ETH_ALEN];
1305 int err;
1306
1307 if (wdev->iftype != NL80211_IFTYPE_STATION)
1308 return -EOPNOTSUPP;
1309
1310 if (!rdev->ops->get_station)
1311 return -EOPNOTSUPP;
1312
1313 err = 0;
1314 if (!wdev->valid_links && wdev->links[0].client.current_bss)
1315 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid,
1316 ETH_ALEN);
1317 else
1318 err = -EOPNOTSUPP;
1319 if (err)
1320 return err;
1321
1322 wiphy_lock(&rdev->wiphy);
1323 err = rdev_get_station(rdev, dev, addr, &sinfo);
1324 wiphy_unlock(&rdev->wiphy);
1325 if (err)
1326 return err;
1327
1328 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1329 err = -EOPNOTSUPP;
1330 goto free;
1331 }
1332
1333 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1334
1335 free:
1336 cfg80211_sinfo_release_content(&sinfo);
1337 return err;
1338 }
1339
1340 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1341 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1342 {
1343 struct wireless_dev *wdev = dev->ieee80211_ptr;
1344 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1345 /* we are under RTNL - globally locked - so can use static structs */
1346 static struct iw_statistics wstats;
1347 static struct station_info sinfo = {};
1348 u8 bssid[ETH_ALEN];
1349 int ret;
1350
1351 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1352 return NULL;
1353
1354 if (!rdev->ops->get_station)
1355 return NULL;
1356
1357 /* Grab BSSID of current BSS, if any */
1358 wiphy_lock(&rdev->wiphy);
1359 if (wdev->valid_links || !wdev->links[0].client.current_bss) {
1360 wiphy_unlock(&rdev->wiphy);
1361 return NULL;
1362 }
1363 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN);
1364
1365 memset(&sinfo, 0, sizeof(sinfo));
1366
1367 ret = rdev_get_station(rdev, dev, bssid, &sinfo);
1368 wiphy_unlock(&rdev->wiphy);
1369
1370 if (ret)
1371 return NULL;
1372
1373 memset(&wstats, 0, sizeof(wstats));
1374
1375 switch (rdev->wiphy.signal_type) {
1376 case CFG80211_SIGNAL_TYPE_MBM:
1377 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1378 int sig = sinfo.signal;
1379 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1380 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1381 wstats.qual.updated |= IW_QUAL_DBM;
1382 wstats.qual.level = sig;
1383 if (sig < -110)
1384 sig = -110;
1385 else if (sig > -40)
1386 sig = -40;
1387 wstats.qual.qual = sig + 110;
1388 break;
1389 }
1390 fallthrough;
1391 case CFG80211_SIGNAL_TYPE_UNSPEC:
1392 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1393 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1394 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1395 wstats.qual.level = sinfo.signal;
1396 wstats.qual.qual = sinfo.signal;
1397 break;
1398 }
1399 fallthrough;
1400 default:
1401 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1402 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1403 }
1404
1405 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1406 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1407 wstats.discard.misc = sinfo.rx_dropped_misc;
1408 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1409 wstats.discard.retries = sinfo.tx_failed;
1410
1411 cfg80211_sinfo_release_content(&sinfo);
1412
1413 return &wstats;
1414 }
1415
1416 static int cfg80211_wext_siwap(struct net_device *dev,
1417 struct iw_request_info *info,
1418 union iwreq_data *wrqu, char *extra)
1419 {
1420 struct sockaddr *ap_addr = &wrqu->ap_addr;
1421 struct wireless_dev *wdev = dev->ieee80211_ptr;
1422 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1423 int ret;
1424
1425 wiphy_lock(&rdev->wiphy);
1426 switch (wdev->iftype) {
1427 case NL80211_IFTYPE_ADHOC:
1428 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1429 break;
1430 case NL80211_IFTYPE_STATION:
1431 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1432 break;
1433 default:
1434 ret = -EOPNOTSUPP;
1435 break;
1436 }
1437 wiphy_unlock(&rdev->wiphy);
1438
1439 return ret;
1440 }
1441
1442 static int cfg80211_wext_giwap(struct net_device *dev,
1443 struct iw_request_info *info,
1444 union iwreq_data *wrqu, char *extra)
1445 {
1446 struct sockaddr *ap_addr = &wrqu->ap_addr;
1447 struct wireless_dev *wdev = dev->ieee80211_ptr;
1448 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1449 int ret;
1450
1451 wiphy_lock(&rdev->wiphy);
1452 switch (wdev->iftype) {
1453 case NL80211_IFTYPE_ADHOC:
1454 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1455 break;
1456 case NL80211_IFTYPE_STATION:
1457 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1458 break;
1459 default:
1460 ret = -EOPNOTSUPP;
1461 break;
1462 }
1463 wiphy_unlock(&rdev->wiphy);
1464
1465 return ret;
1466 }
1467
1468 static int cfg80211_wext_siwessid(struct net_device *dev,
1469 struct iw_request_info *info,
1470 union iwreq_data *wrqu, char *ssid)
1471 {
1472 struct iw_point *data = &wrqu->data;
1473 struct wireless_dev *wdev = dev->ieee80211_ptr;
1474 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1475 int ret;
1476
1477 wiphy_lock(&rdev->wiphy);
1478 switch (wdev->iftype) {
1479 case NL80211_IFTYPE_ADHOC:
1480 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1481 break;
1482 case NL80211_IFTYPE_STATION:
1483 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1484 break;
1485 default:
1486 ret = -EOPNOTSUPP;
1487 break;
1488 }
1489 wiphy_unlock(&rdev->wiphy);
1490
1491 return ret;
1492 }
1493
1494 static int cfg80211_wext_giwessid(struct net_device *dev,
1495 struct iw_request_info *info,
1496 union iwreq_data *wrqu, char *ssid)
1497 {
1498 struct iw_point *data = &wrqu->data;
1499 struct wireless_dev *wdev = dev->ieee80211_ptr;
1500 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1501 int ret;
1502
1503 data->flags = 0;
1504 data->length = 0;
1505
1506 wiphy_lock(&rdev->wiphy);
1507 switch (wdev->iftype) {
1508 case NL80211_IFTYPE_ADHOC:
1509 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1510 break;
1511 case NL80211_IFTYPE_STATION:
1512 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1513 break;
1514 default:
1515 ret = -EOPNOTSUPP;
1516 break;
1517 }
1518 wiphy_unlock(&rdev->wiphy);
1519
1520 return ret;
1521 }
1522
1523 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1524 struct iw_request_info *info,
1525 union iwreq_data *wrqu, char *extra)
1526 {
1527 struct wireless_dev *wdev = dev->ieee80211_ptr;
1528 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1529 struct cfg80211_pmksa cfg_pmksa;
1530 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1531 int ret;
1532
1533 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1534
1535 if (wdev->iftype != NL80211_IFTYPE_STATION)
1536 return -EINVAL;
1537
1538 cfg_pmksa.bssid = pmksa->bssid.sa_data;
1539 cfg_pmksa.pmkid = pmksa->pmkid;
1540
1541 wiphy_lock(&rdev->wiphy);
1542 switch (pmksa->cmd) {
1543 case IW_PMKSA_ADD:
1544 if (!rdev->ops->set_pmksa) {
1545 ret = -EOPNOTSUPP;
1546 break;
1547 }
1548
1549 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1550 break;
1551 case IW_PMKSA_REMOVE:
1552 if (!rdev->ops->del_pmksa) {
1553 ret = -EOPNOTSUPP;
1554 break;
1555 }
1556
1557 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1558 break;
1559 case IW_PMKSA_FLUSH:
1560 if (!rdev->ops->flush_pmksa) {
1561 ret = -EOPNOTSUPP;
1562 break;
1563 }
1564
1565 ret = rdev_flush_pmksa(rdev, dev);
1566 break;
1567 default:
1568 ret = -EOPNOTSUPP;
1569 break;
1570 }
1571 wiphy_unlock(&rdev->wiphy);
1572
1573 return ret;
1574 }
1575
1576 static const iw_handler cfg80211_handlers[] = {
1577 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
1578 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq),
1579 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq),
1580 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode),
1581 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode),
1582 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange),
1583 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap),
1584 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap),
1585 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme),
1586 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan),
1587 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan),
1588 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid),
1589 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid),
1590 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate),
1591 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate),
1592 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts),
1593 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts),
1594 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag),
1595 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag),
1596 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower),
1597 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower),
1598 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry),
1599 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
1600 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode),
1601 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode),
1602 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower),
1603 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower),
1604 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie),
1605 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth),
1606 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth),
1607 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext),
1608 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa),
1609 };
1610
1611 const struct iw_handler_def cfg80211_wext_handler = {
1612 .num_standard = ARRAY_SIZE(cfg80211_handlers),
1613 .standard = cfg80211_handlers,
1614 .get_wireless_stats = cfg80211_wireless_stats,
1615 };
Kernel DRM miscellaneous fixes and cross-tree changes