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