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1/*
2 * cfg80211 - wext compat code
3 *
4 * This is temporary code until all wireless functionality is migrated
5 * into cfg80211, when that happens all the exports here go away and
6 * we directly assign the wireless handlers of wireless interfaces.
7 *
8 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
9 */
10
11#include <linux/export.h>
12#include <linux/wireless.h>
13#include <linux/nl80211.h>
14#include <linux/if_arp.h>
15#include <linux/etherdevice.h>
16#include <linux/slab.h>
17#include <net/iw_handler.h>
18#include <net/cfg80211.h>
19#include <net/cfg80211-wext.h>
20#include "wext-compat.h"
21#include "core.h"
22#include "rdev-ops.h"
23
24int cfg80211_wext_giwname(struct net_device *dev,
25 struct iw_request_info *info,
26 char *name, char *extra)
27{
28 strcpy(name, "IEEE 802.11");
29 return 0;
30}
31EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
32
33int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
34 u32 *mode, char *extra)
35{
36 struct wireless_dev *wdev = dev->ieee80211_ptr;
37 struct cfg80211_registered_device *rdev;
38 struct vif_params vifparams;
39 enum nl80211_iftype type;
40
41 rdev = wiphy_to_rdev(wdev->wiphy);
42
43 switch (*mode) {
44 case IW_MODE_INFRA:
45 type = NL80211_IFTYPE_STATION;
46 break;
47 case IW_MODE_ADHOC:
48 type = NL80211_IFTYPE_ADHOC;
49 break;
50 case IW_MODE_REPEAT:
51 type = NL80211_IFTYPE_WDS;
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 return cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
66}
67EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
68
69int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
70 u32 *mode, char *extra)
71{
72 struct wireless_dev *wdev = dev->ieee80211_ptr;
73
74 if (!wdev)
75 return -EOPNOTSUPP;
76
77 switch (wdev->iftype) {
78 case NL80211_IFTYPE_AP:
79 *mode = IW_MODE_MASTER;
80 break;
81 case NL80211_IFTYPE_STATION:
82 *mode = IW_MODE_INFRA;
83 break;
84 case NL80211_IFTYPE_ADHOC:
85 *mode = IW_MODE_ADHOC;
86 break;
87 case NL80211_IFTYPE_MONITOR:
88 *mode = IW_MODE_MONITOR;
89 break;
90 case NL80211_IFTYPE_WDS:
91 *mode = IW_MODE_REPEAT;
92 break;
93 case NL80211_IFTYPE_AP_VLAN:
94 *mode = IW_MODE_SECOND; /* FIXME */
95 break;
96 default:
97 *mode = IW_MODE_AUTO;
98 break;
99 }
100 return 0;
101}
102EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
103
104
105int cfg80211_wext_giwrange(struct net_device *dev,
106 struct iw_request_info *info,
107 struct iw_point *data, char *extra)
108{
109 struct wireless_dev *wdev = dev->ieee80211_ptr;
110 struct iw_range *range = (struct iw_range *) extra;
111 enum nl80211_band band;
112 int i, c = 0;
113
114 if (!wdev)
115 return -EOPNOTSUPP;
116
117 data->length = sizeof(struct iw_range);
118 memset(range, 0, sizeof(struct iw_range));
119
120 range->we_version_compiled = WIRELESS_EXT;
121 range->we_version_source = 21;
122 range->retry_capa = IW_RETRY_LIMIT;
123 range->retry_flags = IW_RETRY_LIMIT;
124 range->min_retry = 0;
125 range->max_retry = 255;
126 range->min_rts = 0;
127 range->max_rts = 2347;
128 range->min_frag = 256;
129 range->max_frag = 2346;
130
131 range->max_encoding_tokens = 4;
132
133 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
134
135 switch (wdev->wiphy->signal_type) {
136 case CFG80211_SIGNAL_TYPE_NONE:
137 break;
138 case CFG80211_SIGNAL_TYPE_MBM:
139 range->max_qual.level = (u8)-110;
140 range->max_qual.qual = 70;
141 range->avg_qual.qual = 35;
142 range->max_qual.updated |= IW_QUAL_DBM;
143 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
144 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
145 break;
146 case CFG80211_SIGNAL_TYPE_UNSPEC:
147 range->max_qual.level = 100;
148 range->max_qual.qual = 100;
149 range->avg_qual.qual = 50;
150 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
151 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
152 break;
153 }
154
155 range->avg_qual.level = range->max_qual.level / 2;
156 range->avg_qual.noise = range->max_qual.noise / 2;
157 range->avg_qual.updated = range->max_qual.updated;
158
159 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
160 switch (wdev->wiphy->cipher_suites[i]) {
161 case WLAN_CIPHER_SUITE_TKIP:
162 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
163 IW_ENC_CAPA_WPA);
164 break;
165
166 case WLAN_CIPHER_SUITE_CCMP:
167 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
168 IW_ENC_CAPA_WPA2);
169 break;
170
171 case WLAN_CIPHER_SUITE_WEP40:
172 range->encoding_size[range->num_encoding_sizes++] =
173 WLAN_KEY_LEN_WEP40;
174 break;
175
176 case WLAN_CIPHER_SUITE_WEP104:
177 range->encoding_size[range->num_encoding_sizes++] =
178 WLAN_KEY_LEN_WEP104;
179 break;
180 }
181 }
182
183 for (band = 0; band < NUM_NL80211_BANDS; band ++) {
184 struct ieee80211_supported_band *sband;
185
186 sband = wdev->wiphy->bands[band];
187
188 if (!sband)
189 continue;
190
191 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
192 struct ieee80211_channel *chan = &sband->channels[i];
193
194 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
195 range->freq[c].i =
196 ieee80211_frequency_to_channel(
197 chan->center_freq);
198 range->freq[c].m = chan->center_freq;
199 range->freq[c].e = 6;
200 c++;
201 }
202 }
203 }
204 range->num_channels = c;
205 range->num_frequency = c;
206
207 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
208 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
209 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
210
211 if (wdev->wiphy->max_scan_ssids > 0)
212 range->scan_capa |= IW_SCAN_CAPA_ESSID;
213
214 return 0;
215}
216EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
217
218
219/**
220 * cfg80211_wext_freq - get wext frequency for non-"auto"
221 * @dev: the net device
222 * @freq: the wext freq encoding
223 *
224 * Returns a frequency, or a negative error code, or 0 for auto.
225 */
226int cfg80211_wext_freq(struct iw_freq *freq)
227{
228 /*
229 * Parse frequency - return 0 for auto and
230 * -EINVAL for impossible things.
231 */
232 if (freq->e == 0) {
233 enum nl80211_band band = NL80211_BAND_2GHZ;
234 if (freq->m < 0)
235 return 0;
236 if (freq->m > 14)
237 band = NL80211_BAND_5GHZ;
238 return ieee80211_channel_to_frequency(freq->m, band);
239 } else {
240 int i, div = 1000000;
241 for (i = 0; i < freq->e; i++)
242 div /= 10;
243 if (div <= 0)
244 return -EINVAL;
245 return freq->m / div;
246 }
247}
248
249int cfg80211_wext_siwrts(struct net_device *dev,
250 struct iw_request_info *info,
251 struct iw_param *rts, char *extra)
252{
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 if (rts->disabled || !rts->fixed)
259 wdev->wiphy->rts_threshold = (u32) -1;
260 else if (rts->value < 0)
261 return -EINVAL;
262 else
263 wdev->wiphy->rts_threshold = rts->value;
264
265 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
266 if (err)
267 wdev->wiphy->rts_threshold = orts;
268
269 return err;
270}
271EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
272
273int cfg80211_wext_giwrts(struct net_device *dev,
274 struct iw_request_info *info,
275 struct iw_param *rts, char *extra)
276{
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}
285EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
286
287int cfg80211_wext_siwfrag(struct net_device *dev,
288 struct iw_request_info *info,
289 struct iw_param *frag, char *extra)
290{
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 if (frag->disabled || !frag->fixed)
297 wdev->wiphy->frag_threshold = (u32) -1;
298 else if (frag->value < 256)
299 return -EINVAL;
300 else {
301 /* Fragment length must be even, so strip LSB. */
302 wdev->wiphy->frag_threshold = frag->value & ~0x1;
303 }
304
305 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
306 if (err)
307 wdev->wiphy->frag_threshold = ofrag;
308
309 return err;
310}
311EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
312
313int cfg80211_wext_giwfrag(struct net_device *dev,
314 struct iw_request_info *info,
315 struct iw_param *frag, char *extra)
316{
317 struct wireless_dev *wdev = dev->ieee80211_ptr;
318
319 frag->value = wdev->wiphy->frag_threshold;
320 frag->disabled = frag->value == (u32) -1;
321 frag->fixed = 1;
322
323 return 0;
324}
325EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
326
327static int cfg80211_wext_siwretry(struct net_device *dev,
328 struct iw_request_info *info,
329 struct iw_param *retry, char *extra)
330{
331 struct wireless_dev *wdev = dev->ieee80211_ptr;
332 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
333 u32 changed = 0;
334 u8 olong = wdev->wiphy->retry_long;
335 u8 oshort = wdev->wiphy->retry_short;
336 int err;
337
338 if (retry->disabled || retry->value < 1 || retry->value > 255 ||
339 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
340 return -EINVAL;
341
342 if (retry->flags & IW_RETRY_LONG) {
343 wdev->wiphy->retry_long = retry->value;
344 changed |= WIPHY_PARAM_RETRY_LONG;
345 } else if (retry->flags & IW_RETRY_SHORT) {
346 wdev->wiphy->retry_short = retry->value;
347 changed |= WIPHY_PARAM_RETRY_SHORT;
348 } else {
349 wdev->wiphy->retry_short = retry->value;
350 wdev->wiphy->retry_long = retry->value;
351 changed |= WIPHY_PARAM_RETRY_LONG;
352 changed |= WIPHY_PARAM_RETRY_SHORT;
353 }
354
355 if (!changed)
356 return 0;
357
358 err = rdev_set_wiphy_params(rdev, changed);
359 if (err) {
360 wdev->wiphy->retry_short = oshort;
361 wdev->wiphy->retry_long = olong;
362 }
363
364 return err;
365}
366
367int cfg80211_wext_giwretry(struct net_device *dev,
368 struct iw_request_info *info,
369 struct iw_param *retry, char *extra)
370{
371 struct wireless_dev *wdev = dev->ieee80211_ptr;
372
373 retry->disabled = 0;
374
375 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
376 /*
377 * First return short value, iwconfig will ask long value
378 * later if needed
379 */
380 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
381 retry->value = wdev->wiphy->retry_short;
382 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
383 retry->flags |= IW_RETRY_LONG;
384
385 return 0;
386 }
387
388 if (retry->flags & IW_RETRY_LONG) {
389 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
390 retry->value = wdev->wiphy->retry_long;
391 }
392
393 return 0;
394}
395EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
396
397static 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 (pairwise && !addr)
407 return -EINVAL;
408
409 /*
410 * In many cases we won't actually need this, but it's better
411 * to do it first in case the allocation fails. Don't use wext.
412 */
413 if (!wdev->wext.keys) {
414 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
415 GFP_KERNEL);
416 if (!wdev->wext.keys)
417 return -ENOMEM;
418 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
419 wdev->wext.keys->params[i].key =
420 wdev->wext.keys->data[i];
421 }
422
423 if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
424 wdev->iftype != NL80211_IFTYPE_STATION)
425 return -EOPNOTSUPP;
426
427 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
428 if (!wdev->current_bss)
429 return -ENOLINK;
430
431 if (!rdev->ops->set_default_mgmt_key)
432 return -EOPNOTSUPP;
433
434 if (idx < 4 || idx > 5)
435 return -EINVAL;
436 } else if (idx < 0 || idx > 3)
437 return -EINVAL;
438
439 if (remove) {
440 err = 0;
441 if (wdev->current_bss) {
442 /*
443 * If removing the current TX key, we will need to
444 * join a new IBSS without the privacy bit clear.
445 */
446 if (idx == wdev->wext.default_key &&
447 wdev->iftype == NL80211_IFTYPE_ADHOC) {
448 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
449 rejoin = true;
450 }
451
452 if (!pairwise && addr &&
453 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
454 err = -ENOENT;
455 else
456 err = rdev_del_key(rdev, dev, idx, pairwise,
457 addr);
458 }
459 wdev->wext.connect.privacy = false;
460 /*
461 * Applications using wireless extensions expect to be
462 * able to delete keys that don't exist, so allow that.
463 */
464 if (err == -ENOENT)
465 err = 0;
466 if (!err) {
467 if (!addr && idx < 4) {
468 memset(wdev->wext.keys->data[idx], 0,
469 sizeof(wdev->wext.keys->data[idx]));
470 wdev->wext.keys->params[idx].key_len = 0;
471 wdev->wext.keys->params[idx].cipher = 0;
472 }
473 if (idx == wdev->wext.default_key)
474 wdev->wext.default_key = -1;
475 else if (idx == wdev->wext.default_mgmt_key)
476 wdev->wext.default_mgmt_key = -1;
477 }
478
479 if (!err && rejoin)
480 err = cfg80211_ibss_wext_join(rdev, wdev);
481
482 return err;
483 }
484
485 if (addr)
486 tx_key = false;
487
488 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
489 return -EINVAL;
490
491 err = 0;
492 if (wdev->current_bss)
493 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
494 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
495 params->cipher != WLAN_CIPHER_SUITE_WEP104)
496 return -EINVAL;
497 if (err)
498 return err;
499
500 /*
501 * We only need to store WEP keys, since they're the only keys that
502 * can be be set before a connection is established and persist after
503 * disconnecting.
504 */
505 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
506 params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
507 wdev->wext.keys->params[idx] = *params;
508 memcpy(wdev->wext.keys->data[idx],
509 params->key, params->key_len);
510 wdev->wext.keys->params[idx].key =
511 wdev->wext.keys->data[idx];
512 }
513
514 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
515 params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
516 (tx_key || (!addr && wdev->wext.default_key == -1))) {
517 if (wdev->current_bss) {
518 /*
519 * If we are getting a new TX key from not having
520 * had one before we need to join a new IBSS with
521 * the privacy bit set.
522 */
523 if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
524 wdev->wext.default_key == -1) {
525 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
526 rejoin = true;
527 }
528 err = rdev_set_default_key(rdev, dev, idx, true, true);
529 }
530 if (!err) {
531 wdev->wext.default_key = idx;
532 if (rejoin)
533 err = cfg80211_ibss_wext_join(rdev, wdev);
534 }
535 return err;
536 }
537
538 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
539 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
540 if (wdev->current_bss)
541 err = rdev_set_default_mgmt_key(rdev, dev, idx);
542 if (!err)
543 wdev->wext.default_mgmt_key = idx;
544 return err;
545 }
546
547 return 0;
548}
549
550static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
551 struct net_device *dev, bool pairwise,
552 const u8 *addr, bool remove, bool tx_key,
553 int idx, struct key_params *params)
554{
555 int err;
556
557 wdev_lock(dev->ieee80211_ptr);
558 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
559 remove, tx_key, idx, params);
560 wdev_unlock(dev->ieee80211_ptr);
561
562 return err;
563}
564
565static int cfg80211_wext_siwencode(struct net_device *dev,
566 struct iw_request_info *info,
567 struct iw_point *erq, char *keybuf)
568{
569 struct wireless_dev *wdev = dev->ieee80211_ptr;
570 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
571 int idx, err;
572 bool remove = false;
573 struct key_params params;
574
575 if (wdev->iftype != NL80211_IFTYPE_STATION &&
576 wdev->iftype != NL80211_IFTYPE_ADHOC)
577 return -EOPNOTSUPP;
578
579 /* no use -- only MFP (set_default_mgmt_key) is optional */
580 if (!rdev->ops->del_key ||
581 !rdev->ops->add_key ||
582 !rdev->ops->set_default_key)
583 return -EOPNOTSUPP;
584
585 idx = erq->flags & IW_ENCODE_INDEX;
586 if (idx == 0) {
587 idx = wdev->wext.default_key;
588 if (idx < 0)
589 idx = 0;
590 } else if (idx < 1 || idx > 4)
591 return -EINVAL;
592 else
593 idx--;
594
595 if (erq->flags & IW_ENCODE_DISABLED)
596 remove = true;
597 else if (erq->length == 0) {
598 /* No key data - just set the default TX key index */
599 err = 0;
600 wdev_lock(wdev);
601 if (wdev->current_bss)
602 err = rdev_set_default_key(rdev, dev, idx, true,
603 true);
604 if (!err)
605 wdev->wext.default_key = idx;
606 wdev_unlock(wdev);
607 return err;
608 }
609
610 memset(¶ms, 0, sizeof(params));
611 params.key = keybuf;
612 params.key_len = erq->length;
613 if (erq->length == 5)
614 params.cipher = WLAN_CIPHER_SUITE_WEP40;
615 else if (erq->length == 13)
616 params.cipher = WLAN_CIPHER_SUITE_WEP104;
617 else if (!remove)
618 return -EINVAL;
619
620 return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
621 wdev->wext.default_key == -1,
622 idx, ¶ms);
623}
624
625static int cfg80211_wext_siwencodeext(struct net_device *dev,
626 struct iw_request_info *info,
627 struct iw_point *erq, char *extra)
628{
629 struct wireless_dev *wdev = dev->ieee80211_ptr;
630 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
631 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
632 const u8 *addr;
633 int idx;
634 bool remove = false;
635 struct key_params params;
636 u32 cipher;
637
638 if (wdev->iftype != NL80211_IFTYPE_STATION &&
639 wdev->iftype != NL80211_IFTYPE_ADHOC)
640 return -EOPNOTSUPP;
641
642 /* no use -- only MFP (set_default_mgmt_key) is optional */
643 if (!rdev->ops->del_key ||
644 !rdev->ops->add_key ||
645 !rdev->ops->set_default_key)
646 return -EOPNOTSUPP;
647
648 switch (ext->alg) {
649 case IW_ENCODE_ALG_NONE:
650 remove = true;
651 cipher = 0;
652 break;
653 case IW_ENCODE_ALG_WEP:
654 if (ext->key_len == 5)
655 cipher = WLAN_CIPHER_SUITE_WEP40;
656 else if (ext->key_len == 13)
657 cipher = WLAN_CIPHER_SUITE_WEP104;
658 else
659 return -EINVAL;
660 break;
661 case IW_ENCODE_ALG_TKIP:
662 cipher = WLAN_CIPHER_SUITE_TKIP;
663 break;
664 case IW_ENCODE_ALG_CCMP:
665 cipher = WLAN_CIPHER_SUITE_CCMP;
666 break;
667 case IW_ENCODE_ALG_AES_CMAC:
668 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
669 break;
670 default:
671 return -EOPNOTSUPP;
672 }
673
674 if (erq->flags & IW_ENCODE_DISABLED)
675 remove = true;
676
677 idx = erq->flags & IW_ENCODE_INDEX;
678 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
679 if (idx < 4 || idx > 5) {
680 idx = wdev->wext.default_mgmt_key;
681 if (idx < 0)
682 return -EINVAL;
683 } else
684 idx--;
685 } else {
686 if (idx < 1 || idx > 4) {
687 idx = wdev->wext.default_key;
688 if (idx < 0)
689 return -EINVAL;
690 } else
691 idx--;
692 }
693
694 addr = ext->addr.sa_data;
695 if (is_broadcast_ether_addr(addr))
696 addr = NULL;
697
698 memset(¶ms, 0, sizeof(params));
699 params.key = ext->key;
700 params.key_len = ext->key_len;
701 params.cipher = cipher;
702
703 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
704 params.seq = ext->rx_seq;
705 params.seq_len = 6;
706 }
707
708 return cfg80211_set_encryption(
709 rdev, dev,
710 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
711 addr, remove,
712 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
713 idx, ¶ms);
714}
715
716static int cfg80211_wext_giwencode(struct net_device *dev,
717 struct iw_request_info *info,
718 struct iw_point *erq, char *keybuf)
719{
720 struct wireless_dev *wdev = dev->ieee80211_ptr;
721 int idx;
722
723 if (wdev->iftype != NL80211_IFTYPE_STATION &&
724 wdev->iftype != NL80211_IFTYPE_ADHOC)
725 return -EOPNOTSUPP;
726
727 idx = erq->flags & IW_ENCODE_INDEX;
728 if (idx == 0) {
729 idx = wdev->wext.default_key;
730 if (idx < 0)
731 idx = 0;
732 } else if (idx < 1 || idx > 4)
733 return -EINVAL;
734 else
735 idx--;
736
737 erq->flags = idx + 1;
738
739 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
740 erq->flags |= IW_ENCODE_DISABLED;
741 erq->length = 0;
742 return 0;
743 }
744
745 erq->length = min_t(size_t, erq->length,
746 wdev->wext.keys->params[idx].key_len);
747 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
748 erq->flags |= IW_ENCODE_ENABLED;
749
750 return 0;
751}
752
753static int cfg80211_wext_siwfreq(struct net_device *dev,
754 struct iw_request_info *info,
755 struct iw_freq *wextfreq, char *extra)
756{
757 struct wireless_dev *wdev = dev->ieee80211_ptr;
758 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
759 struct cfg80211_chan_def chandef = {
760 .width = NL80211_CHAN_WIDTH_20_NOHT,
761 };
762 int freq;
763
764 switch (wdev->iftype) {
765 case NL80211_IFTYPE_STATION:
766 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
767 case NL80211_IFTYPE_ADHOC:
768 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
769 case NL80211_IFTYPE_MONITOR:
770 freq = cfg80211_wext_freq(wextfreq);
771 if (freq < 0)
772 return freq;
773 if (freq == 0)
774 return -EINVAL;
775 chandef.center_freq1 = freq;
776 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
777 if (!chandef.chan)
778 return -EINVAL;
779 return cfg80211_set_monitor_channel(rdev, &chandef);
780 case NL80211_IFTYPE_MESH_POINT:
781 freq = cfg80211_wext_freq(wextfreq);
782 if (freq < 0)
783 return freq;
784 if (freq == 0)
785 return -EINVAL;
786 chandef.center_freq1 = freq;
787 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
788 if (!chandef.chan)
789 return -EINVAL;
790 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
791 default:
792 return -EOPNOTSUPP;
793 }
794}
795
796static int cfg80211_wext_giwfreq(struct net_device *dev,
797 struct iw_request_info *info,
798 struct iw_freq *freq, char *extra)
799{
800 struct wireless_dev *wdev = dev->ieee80211_ptr;
801 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
802 struct cfg80211_chan_def chandef;
803 int ret;
804
805 switch (wdev->iftype) {
806 case NL80211_IFTYPE_STATION:
807 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
808 case NL80211_IFTYPE_ADHOC:
809 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
810 case NL80211_IFTYPE_MONITOR:
811 if (!rdev->ops->get_channel)
812 return -EINVAL;
813
814 ret = rdev_get_channel(rdev, wdev, &chandef);
815 if (ret)
816 return ret;
817 freq->m = chandef.chan->center_freq;
818 freq->e = 6;
819 return 0;
820 default:
821 return -EINVAL;
822 }
823}
824
825static int cfg80211_wext_siwtxpower(struct net_device *dev,
826 struct iw_request_info *info,
827 union iwreq_data *data, char *extra)
828{
829 struct wireless_dev *wdev = dev->ieee80211_ptr;
830 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
831 enum nl80211_tx_power_setting type;
832 int dbm = 0;
833
834 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
835 return -EINVAL;
836 if (data->txpower.flags & IW_TXPOW_RANGE)
837 return -EINVAL;
838
839 if (!rdev->ops->set_tx_power)
840 return -EOPNOTSUPP;
841
842 /* only change when not disabling */
843 if (!data->txpower.disabled) {
844 rfkill_set_sw_state(rdev->rfkill, false);
845
846 if (data->txpower.fixed) {
847 /*
848 * wext doesn't support negative values, see
849 * below where it's for automatic
850 */
851 if (data->txpower.value < 0)
852 return -EINVAL;
853 dbm = data->txpower.value;
854 type = NL80211_TX_POWER_FIXED;
855 /* TODO: do regulatory check! */
856 } else {
857 /*
858 * Automatic power level setting, max being the value
859 * passed in from userland.
860 */
861 if (data->txpower.value < 0) {
862 type = NL80211_TX_POWER_AUTOMATIC;
863 } else {
864 dbm = data->txpower.value;
865 type = NL80211_TX_POWER_LIMITED;
866 }
867 }
868 } else {
869 rfkill_set_sw_state(rdev->rfkill, true);
870 schedule_work(&rdev->rfkill_sync);
871 return 0;
872 }
873
874 return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
875}
876
877static int cfg80211_wext_giwtxpower(struct net_device *dev,
878 struct iw_request_info *info,
879 union iwreq_data *data, char *extra)
880{
881 struct wireless_dev *wdev = dev->ieee80211_ptr;
882 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
883 int err, val;
884
885 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
886 return -EINVAL;
887 if (data->txpower.flags & IW_TXPOW_RANGE)
888 return -EINVAL;
889
890 if (!rdev->ops->get_tx_power)
891 return -EOPNOTSUPP;
892
893 err = rdev_get_tx_power(rdev, wdev, &val);
894 if (err)
895 return err;
896
897 /* well... oh well */
898 data->txpower.fixed = 1;
899 data->txpower.disabled = rfkill_blocked(rdev->rfkill);
900 data->txpower.value = val;
901 data->txpower.flags = IW_TXPOW_DBM;
902
903 return 0;
904}
905
906static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
907 s32 auth_alg)
908{
909 int nr_alg = 0;
910
911 if (!auth_alg)
912 return -EINVAL;
913
914 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
915 IW_AUTH_ALG_SHARED_KEY |
916 IW_AUTH_ALG_LEAP))
917 return -EINVAL;
918
919 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
920 nr_alg++;
921 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
922 }
923
924 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
925 nr_alg++;
926 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
927 }
928
929 if (auth_alg & IW_AUTH_ALG_LEAP) {
930 nr_alg++;
931 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
932 }
933
934 if (nr_alg > 1)
935 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
936
937 return 0;
938}
939
940static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
941{
942 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
943 IW_AUTH_WPA_VERSION_WPA2|
944 IW_AUTH_WPA_VERSION_DISABLED))
945 return -EINVAL;
946
947 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
948 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
949 IW_AUTH_WPA_VERSION_WPA2)))
950 return -EINVAL;
951
952 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
953 wdev->wext.connect.crypto.wpa_versions &=
954 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
955
956 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
957 wdev->wext.connect.crypto.wpa_versions |=
958 NL80211_WPA_VERSION_1;
959
960 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
961 wdev->wext.connect.crypto.wpa_versions |=
962 NL80211_WPA_VERSION_2;
963
964 return 0;
965}
966
967static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
968{
969 if (cipher & IW_AUTH_CIPHER_WEP40)
970 wdev->wext.connect.crypto.cipher_group =
971 WLAN_CIPHER_SUITE_WEP40;
972 else if (cipher & IW_AUTH_CIPHER_WEP104)
973 wdev->wext.connect.crypto.cipher_group =
974 WLAN_CIPHER_SUITE_WEP104;
975 else if (cipher & IW_AUTH_CIPHER_TKIP)
976 wdev->wext.connect.crypto.cipher_group =
977 WLAN_CIPHER_SUITE_TKIP;
978 else if (cipher & IW_AUTH_CIPHER_CCMP)
979 wdev->wext.connect.crypto.cipher_group =
980 WLAN_CIPHER_SUITE_CCMP;
981 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
982 wdev->wext.connect.crypto.cipher_group =
983 WLAN_CIPHER_SUITE_AES_CMAC;
984 else if (cipher & IW_AUTH_CIPHER_NONE)
985 wdev->wext.connect.crypto.cipher_group = 0;
986 else
987 return -EINVAL;
988
989 return 0;
990}
991
992static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
993{
994 int nr_ciphers = 0;
995 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
996
997 if (cipher & IW_AUTH_CIPHER_WEP40) {
998 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
999 nr_ciphers++;
1000 }
1001
1002 if (cipher & IW_AUTH_CIPHER_WEP104) {
1003 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1004 nr_ciphers++;
1005 }
1006
1007 if (cipher & IW_AUTH_CIPHER_TKIP) {
1008 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1009 nr_ciphers++;
1010 }
1011
1012 if (cipher & IW_AUTH_CIPHER_CCMP) {
1013 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1014 nr_ciphers++;
1015 }
1016
1017 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1018 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1019 nr_ciphers++;
1020 }
1021
1022 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1023
1024 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1025
1026 return 0;
1027}
1028
1029
1030static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1031{
1032 int nr_akm_suites = 0;
1033
1034 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1035 IW_AUTH_KEY_MGMT_PSK))
1036 return -EINVAL;
1037
1038 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1039 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1040 WLAN_AKM_SUITE_8021X;
1041 nr_akm_suites++;
1042 }
1043
1044 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1045 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1046 WLAN_AKM_SUITE_PSK;
1047 nr_akm_suites++;
1048 }
1049
1050 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1051
1052 return 0;
1053}
1054
1055static int cfg80211_wext_siwauth(struct net_device *dev,
1056 struct iw_request_info *info,
1057 struct iw_param *data, char *extra)
1058{
1059 struct wireless_dev *wdev = dev->ieee80211_ptr;
1060
1061 if (wdev->iftype != NL80211_IFTYPE_STATION)
1062 return -EOPNOTSUPP;
1063
1064 switch (data->flags & IW_AUTH_INDEX) {
1065 case IW_AUTH_PRIVACY_INVOKED:
1066 wdev->wext.connect.privacy = data->value;
1067 return 0;
1068 case IW_AUTH_WPA_VERSION:
1069 return cfg80211_set_wpa_version(wdev, data->value);
1070 case IW_AUTH_CIPHER_GROUP:
1071 return cfg80211_set_cipher_group(wdev, data->value);
1072 case IW_AUTH_KEY_MGMT:
1073 return cfg80211_set_key_mgt(wdev, data->value);
1074 case IW_AUTH_CIPHER_PAIRWISE:
1075 return cfg80211_set_cipher_pairwise(wdev, data->value);
1076 case IW_AUTH_80211_AUTH_ALG:
1077 return cfg80211_set_auth_alg(wdev, data->value);
1078 case IW_AUTH_WPA_ENABLED:
1079 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1080 case IW_AUTH_DROP_UNENCRYPTED:
1081 case IW_AUTH_MFP:
1082 return 0;
1083 default:
1084 return -EOPNOTSUPP;
1085 }
1086}
1087
1088static int cfg80211_wext_giwauth(struct net_device *dev,
1089 struct iw_request_info *info,
1090 struct iw_param *data, char *extra)
1091{
1092 /* XXX: what do we need? */
1093
1094 return -EOPNOTSUPP;
1095}
1096
1097static int cfg80211_wext_siwpower(struct net_device *dev,
1098 struct iw_request_info *info,
1099 struct iw_param *wrq, char *extra)
1100{
1101 struct wireless_dev *wdev = dev->ieee80211_ptr;
1102 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1103 bool ps = wdev->ps;
1104 int timeout = wdev->ps_timeout;
1105 int err;
1106
1107 if (wdev->iftype != NL80211_IFTYPE_STATION)
1108 return -EINVAL;
1109
1110 if (!rdev->ops->set_power_mgmt)
1111 return -EOPNOTSUPP;
1112
1113 if (wrq->disabled) {
1114 ps = false;
1115 } else {
1116 switch (wrq->flags & IW_POWER_MODE) {
1117 case IW_POWER_ON: /* If not specified */
1118 case IW_POWER_MODE: /* If set all mask */
1119 case IW_POWER_ALL_R: /* If explicitely state all */
1120 ps = true;
1121 break;
1122 default: /* Otherwise we ignore */
1123 return -EINVAL;
1124 }
1125
1126 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1127 return -EINVAL;
1128
1129 if (wrq->flags & IW_POWER_TIMEOUT)
1130 timeout = wrq->value / 1000;
1131 }
1132
1133 err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1134 if (err)
1135 return err;
1136
1137 wdev->ps = ps;
1138 wdev->ps_timeout = timeout;
1139
1140 return 0;
1141
1142}
1143
1144static int cfg80211_wext_giwpower(struct net_device *dev,
1145 struct iw_request_info *info,
1146 struct iw_param *wrq, char *extra)
1147{
1148 struct wireless_dev *wdev = dev->ieee80211_ptr;
1149
1150 wrq->disabled = !wdev->ps;
1151
1152 return 0;
1153}
1154
1155static int cfg80211_wds_wext_siwap(struct net_device *dev,
1156 struct iw_request_info *info,
1157 struct sockaddr *addr, char *extra)
1158{
1159 struct wireless_dev *wdev = dev->ieee80211_ptr;
1160 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1161 int err;
1162
1163 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1164 return -EINVAL;
1165
1166 if (addr->sa_family != ARPHRD_ETHER)
1167 return -EINVAL;
1168
1169 if (netif_running(dev))
1170 return -EBUSY;
1171
1172 if (!rdev->ops->set_wds_peer)
1173 return -EOPNOTSUPP;
1174
1175 err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1176 if (err)
1177 return err;
1178
1179 memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1180
1181 return 0;
1182}
1183
1184static int cfg80211_wds_wext_giwap(struct net_device *dev,
1185 struct iw_request_info *info,
1186 struct sockaddr *addr, char *extra)
1187{
1188 struct wireless_dev *wdev = dev->ieee80211_ptr;
1189
1190 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1191 return -EINVAL;
1192
1193 addr->sa_family = ARPHRD_ETHER;
1194 memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1195
1196 return 0;
1197}
1198
1199static int cfg80211_wext_siwrate(struct net_device *dev,
1200 struct iw_request_info *info,
1201 struct iw_param *rate, char *extra)
1202{
1203 struct wireless_dev *wdev = dev->ieee80211_ptr;
1204 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1205 struct cfg80211_bitrate_mask mask;
1206 u32 fixed, maxrate;
1207 struct ieee80211_supported_band *sband;
1208 int band, ridx;
1209 bool match = false;
1210
1211 if (!rdev->ops->set_bitrate_mask)
1212 return -EOPNOTSUPP;
1213
1214 memset(&mask, 0, sizeof(mask));
1215 fixed = 0;
1216 maxrate = (u32)-1;
1217
1218 if (rate->value < 0) {
1219 /* nothing */
1220 } else if (rate->fixed) {
1221 fixed = rate->value / 100000;
1222 } else {
1223 maxrate = rate->value / 100000;
1224 }
1225
1226 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1227 sband = wdev->wiphy->bands[band];
1228 if (sband == NULL)
1229 continue;
1230 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1231 struct ieee80211_rate *srate = &sband->bitrates[ridx];
1232 if (fixed == srate->bitrate) {
1233 mask.control[band].legacy = 1 << ridx;
1234 match = true;
1235 break;
1236 }
1237 if (srate->bitrate <= maxrate) {
1238 mask.control[band].legacy |= 1 << ridx;
1239 match = true;
1240 }
1241 }
1242 }
1243
1244 if (!match)
1245 return -EINVAL;
1246
1247 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1248}
1249
1250static int cfg80211_wext_giwrate(struct net_device *dev,
1251 struct iw_request_info *info,
1252 struct iw_param *rate, char *extra)
1253{
1254 struct wireless_dev *wdev = dev->ieee80211_ptr;
1255 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1256 /* we are under RTNL - globally locked - so can use a static struct */
1257 static struct station_info sinfo;
1258 u8 addr[ETH_ALEN];
1259 int err;
1260
1261 if (wdev->iftype != NL80211_IFTYPE_STATION)
1262 return -EOPNOTSUPP;
1263
1264 if (!rdev->ops->get_station)
1265 return -EOPNOTSUPP;
1266
1267 err = 0;
1268 wdev_lock(wdev);
1269 if (wdev->current_bss)
1270 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1271 else
1272 err = -EOPNOTSUPP;
1273 wdev_unlock(wdev);
1274 if (err)
1275 return err;
1276
1277 err = rdev_get_station(rdev, dev, addr, &sinfo);
1278 if (err)
1279 return err;
1280
1281 if (!(sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)))
1282 return -EOPNOTSUPP;
1283
1284 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1285
1286 return 0;
1287}
1288
1289/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1290static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1291{
1292 struct wireless_dev *wdev = dev->ieee80211_ptr;
1293 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1294 /* we are under RTNL - globally locked - so can use static structs */
1295 static struct iw_statistics wstats;
1296 static struct station_info sinfo;
1297 u8 bssid[ETH_ALEN];
1298
1299 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1300 return NULL;
1301
1302 if (!rdev->ops->get_station)
1303 return NULL;
1304
1305 /* Grab BSSID of current BSS, if any */
1306 wdev_lock(wdev);
1307 if (!wdev->current_bss) {
1308 wdev_unlock(wdev);
1309 return NULL;
1310 }
1311 memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1312 wdev_unlock(wdev);
1313
1314 memset(&sinfo, 0, sizeof(sinfo));
1315
1316 if (rdev_get_station(rdev, dev, bssid, &sinfo))
1317 return NULL;
1318
1319 memset(&wstats, 0, sizeof(wstats));
1320
1321 switch (rdev->wiphy.signal_type) {
1322 case CFG80211_SIGNAL_TYPE_MBM:
1323 if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1324 int sig = sinfo.signal;
1325 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1326 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1327 wstats.qual.updated |= IW_QUAL_DBM;
1328 wstats.qual.level = sig;
1329 if (sig < -110)
1330 sig = -110;
1331 else if (sig > -40)
1332 sig = -40;
1333 wstats.qual.qual = sig + 110;
1334 break;
1335 }
1336 case CFG80211_SIGNAL_TYPE_UNSPEC:
1337 if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1338 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1339 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1340 wstats.qual.level = sinfo.signal;
1341 wstats.qual.qual = sinfo.signal;
1342 break;
1343 }
1344 default:
1345 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1346 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1347 }
1348
1349 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1350 if (sinfo.filled & BIT(NL80211_STA_INFO_RX_DROP_MISC))
1351 wstats.discard.misc = sinfo.rx_dropped_misc;
1352 if (sinfo.filled & BIT(NL80211_STA_INFO_TX_FAILED))
1353 wstats.discard.retries = sinfo.tx_failed;
1354
1355 return &wstats;
1356}
1357
1358static int cfg80211_wext_siwap(struct net_device *dev,
1359 struct iw_request_info *info,
1360 struct sockaddr *ap_addr, char *extra)
1361{
1362 struct wireless_dev *wdev = dev->ieee80211_ptr;
1363
1364 switch (wdev->iftype) {
1365 case NL80211_IFTYPE_ADHOC:
1366 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1367 case NL80211_IFTYPE_STATION:
1368 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1369 case NL80211_IFTYPE_WDS:
1370 return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1371 default:
1372 return -EOPNOTSUPP;
1373 }
1374}
1375
1376static int cfg80211_wext_giwap(struct net_device *dev,
1377 struct iw_request_info *info,
1378 struct sockaddr *ap_addr, char *extra)
1379{
1380 struct wireless_dev *wdev = dev->ieee80211_ptr;
1381
1382 switch (wdev->iftype) {
1383 case NL80211_IFTYPE_ADHOC:
1384 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1385 case NL80211_IFTYPE_STATION:
1386 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1387 case NL80211_IFTYPE_WDS:
1388 return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1389 default:
1390 return -EOPNOTSUPP;
1391 }
1392}
1393
1394static int cfg80211_wext_siwessid(struct net_device *dev,
1395 struct iw_request_info *info,
1396 struct iw_point *data, char *ssid)
1397{
1398 struct wireless_dev *wdev = dev->ieee80211_ptr;
1399
1400 switch (wdev->iftype) {
1401 case NL80211_IFTYPE_ADHOC:
1402 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1403 case NL80211_IFTYPE_STATION:
1404 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1405 default:
1406 return -EOPNOTSUPP;
1407 }
1408}
1409
1410static int cfg80211_wext_giwessid(struct net_device *dev,
1411 struct iw_request_info *info,
1412 struct iw_point *data, char *ssid)
1413{
1414 struct wireless_dev *wdev = dev->ieee80211_ptr;
1415
1416 data->flags = 0;
1417 data->length = 0;
1418
1419 switch (wdev->iftype) {
1420 case NL80211_IFTYPE_ADHOC:
1421 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1422 case NL80211_IFTYPE_STATION:
1423 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1424 default:
1425 return -EOPNOTSUPP;
1426 }
1427}
1428
1429static int cfg80211_wext_siwpmksa(struct net_device *dev,
1430 struct iw_request_info *info,
1431 struct iw_point *data, char *extra)
1432{
1433 struct wireless_dev *wdev = dev->ieee80211_ptr;
1434 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1435 struct cfg80211_pmksa cfg_pmksa;
1436 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1437
1438 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1439
1440 if (wdev->iftype != NL80211_IFTYPE_STATION)
1441 return -EINVAL;
1442
1443 cfg_pmksa.bssid = pmksa->bssid.sa_data;
1444 cfg_pmksa.pmkid = pmksa->pmkid;
1445
1446 switch (pmksa->cmd) {
1447 case IW_PMKSA_ADD:
1448 if (!rdev->ops->set_pmksa)
1449 return -EOPNOTSUPP;
1450
1451 return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1452
1453 case IW_PMKSA_REMOVE:
1454 if (!rdev->ops->del_pmksa)
1455 return -EOPNOTSUPP;
1456
1457 return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1458
1459 case IW_PMKSA_FLUSH:
1460 if (!rdev->ops->flush_pmksa)
1461 return -EOPNOTSUPP;
1462
1463 return rdev_flush_pmksa(rdev, dev);
1464
1465 default:
1466 return -EOPNOTSUPP;
1467 }
1468}
1469
1470static const iw_handler cfg80211_handlers[] = {
1471 [IW_IOCTL_IDX(SIOCGIWNAME)] = (iw_handler) cfg80211_wext_giwname,
1472 [IW_IOCTL_IDX(SIOCSIWFREQ)] = (iw_handler) cfg80211_wext_siwfreq,
1473 [IW_IOCTL_IDX(SIOCGIWFREQ)] = (iw_handler) cfg80211_wext_giwfreq,
1474 [IW_IOCTL_IDX(SIOCSIWMODE)] = (iw_handler) cfg80211_wext_siwmode,
1475 [IW_IOCTL_IDX(SIOCGIWMODE)] = (iw_handler) cfg80211_wext_giwmode,
1476 [IW_IOCTL_IDX(SIOCGIWRANGE)] = (iw_handler) cfg80211_wext_giwrange,
1477 [IW_IOCTL_IDX(SIOCSIWAP)] = (iw_handler) cfg80211_wext_siwap,
1478 [IW_IOCTL_IDX(SIOCGIWAP)] = (iw_handler) cfg80211_wext_giwap,
1479 [IW_IOCTL_IDX(SIOCSIWMLME)] = (iw_handler) cfg80211_wext_siwmlme,
1480 [IW_IOCTL_IDX(SIOCSIWSCAN)] = (iw_handler) cfg80211_wext_siwscan,
1481 [IW_IOCTL_IDX(SIOCGIWSCAN)] = (iw_handler) cfg80211_wext_giwscan,
1482 [IW_IOCTL_IDX(SIOCSIWESSID)] = (iw_handler) cfg80211_wext_siwessid,
1483 [IW_IOCTL_IDX(SIOCGIWESSID)] = (iw_handler) cfg80211_wext_giwessid,
1484 [IW_IOCTL_IDX(SIOCSIWRATE)] = (iw_handler) cfg80211_wext_siwrate,
1485 [IW_IOCTL_IDX(SIOCGIWRATE)] = (iw_handler) cfg80211_wext_giwrate,
1486 [IW_IOCTL_IDX(SIOCSIWRTS)] = (iw_handler) cfg80211_wext_siwrts,
1487 [IW_IOCTL_IDX(SIOCGIWRTS)] = (iw_handler) cfg80211_wext_giwrts,
1488 [IW_IOCTL_IDX(SIOCSIWFRAG)] = (iw_handler) cfg80211_wext_siwfrag,
1489 [IW_IOCTL_IDX(SIOCGIWFRAG)] = (iw_handler) cfg80211_wext_giwfrag,
1490 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = (iw_handler) cfg80211_wext_siwtxpower,
1491 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = (iw_handler) cfg80211_wext_giwtxpower,
1492 [IW_IOCTL_IDX(SIOCSIWRETRY)] = (iw_handler) cfg80211_wext_siwretry,
1493 [IW_IOCTL_IDX(SIOCGIWRETRY)] = (iw_handler) cfg80211_wext_giwretry,
1494 [IW_IOCTL_IDX(SIOCSIWENCODE)] = (iw_handler) cfg80211_wext_siwencode,
1495 [IW_IOCTL_IDX(SIOCGIWENCODE)] = (iw_handler) cfg80211_wext_giwencode,
1496 [IW_IOCTL_IDX(SIOCSIWPOWER)] = (iw_handler) cfg80211_wext_siwpower,
1497 [IW_IOCTL_IDX(SIOCGIWPOWER)] = (iw_handler) cfg80211_wext_giwpower,
1498 [IW_IOCTL_IDX(SIOCSIWGENIE)] = (iw_handler) cfg80211_wext_siwgenie,
1499 [IW_IOCTL_IDX(SIOCSIWAUTH)] = (iw_handler) cfg80211_wext_siwauth,
1500 [IW_IOCTL_IDX(SIOCGIWAUTH)] = (iw_handler) cfg80211_wext_giwauth,
1501 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1502 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = (iw_handler) cfg80211_wext_siwpmksa,
1503};
1504
1505const struct iw_handler_def cfg80211_wext_handler = {
1506 .num_standard = ARRAY_SIZE(cfg80211_handlers),
1507 .standard = cfg80211_handlers,
1508 .get_wireless_stats = cfg80211_wireless_stats,
1509};
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) 2019-2022 Intel Corporation
11 */
12
13#include <linux/export.h>
14#include <linux/wireless.h>
15#include <linux/nl80211.h>
16#include <linux/if_arp.h>
17#include <linux/etherdevice.h>
18#include <linux/slab.h>
19#include <net/iw_handler.h>
20#include <net/cfg80211.h>
21#include <net/cfg80211-wext.h>
22#include "wext-compat.h"
23#include "core.h"
24#include "rdev-ops.h"
25
26int cfg80211_wext_giwname(struct net_device *dev,
27 struct iw_request_info *info,
28 union iwreq_data *wrqu, char *extra)
29{
30 strcpy(wrqu->name, "IEEE 802.11");
31 return 0;
32}
33EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
34
35int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
36 union iwreq_data *wrqu, char *extra)
37{
38 __u32 *mode = &wrqu->mode;
39 struct wireless_dev *wdev = dev->ieee80211_ptr;
40 struct cfg80211_registered_device *rdev;
41 struct vif_params vifparams;
42 enum nl80211_iftype type;
43 int ret;
44
45 rdev = wiphy_to_rdev(wdev->wiphy);
46
47 switch (*mode) {
48 case IW_MODE_INFRA:
49 type = NL80211_IFTYPE_STATION;
50 break;
51 case IW_MODE_ADHOC:
52 type = NL80211_IFTYPE_ADHOC;
53 break;
54 case IW_MODE_MONITOR:
55 type = NL80211_IFTYPE_MONITOR;
56 break;
57 default:
58 return -EINVAL;
59 }
60
61 if (type == wdev->iftype)
62 return 0;
63
64 memset(&vifparams, 0, sizeof(vifparams));
65
66 wiphy_lock(wdev->wiphy);
67 ret = cfg80211_change_iface(rdev, dev, type, &vifparams);
68 wiphy_unlock(wdev->wiphy);
69
70 return ret;
71}
72EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
73
74int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
75 union iwreq_data *wrqu, char *extra)
76{
77 __u32 *mode = &wrqu->mode;
78 struct wireless_dev *wdev = dev->ieee80211_ptr;
79
80 if (!wdev)
81 return -EOPNOTSUPP;
82
83 switch (wdev->iftype) {
84 case NL80211_IFTYPE_AP:
85 *mode = IW_MODE_MASTER;
86 break;
87 case NL80211_IFTYPE_STATION:
88 *mode = IW_MODE_INFRA;
89 break;
90 case NL80211_IFTYPE_ADHOC:
91 *mode = IW_MODE_ADHOC;
92 break;
93 case NL80211_IFTYPE_MONITOR:
94 *mode = IW_MODE_MONITOR;
95 break;
96 case NL80211_IFTYPE_WDS:
97 *mode = IW_MODE_REPEAT;
98 break;
99 case NL80211_IFTYPE_AP_VLAN:
100 *mode = IW_MODE_SECOND; /* FIXME */
101 break;
102 default:
103 *mode = IW_MODE_AUTO;
104 break;
105 }
106 return 0;
107}
108EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
109
110
111int cfg80211_wext_giwrange(struct net_device *dev,
112 struct iw_request_info *info,
113 union iwreq_data *wrqu, char *extra)
114{
115 struct iw_point *data = &wrqu->data;
116 struct wireless_dev *wdev = dev->ieee80211_ptr;
117 struct iw_range *range = (struct iw_range *) extra;
118 enum nl80211_band band;
119 int i, c = 0;
120
121 if (!wdev)
122 return -EOPNOTSUPP;
123
124 data->length = sizeof(struct iw_range);
125 memset(range, 0, sizeof(struct iw_range));
126
127 range->we_version_compiled = WIRELESS_EXT;
128 range->we_version_source = 21;
129 range->retry_capa = IW_RETRY_LIMIT;
130 range->retry_flags = IW_RETRY_LIMIT;
131 range->min_retry = 0;
132 range->max_retry = 255;
133 range->min_rts = 0;
134 range->max_rts = 2347;
135 range->min_frag = 256;
136 range->max_frag = 2346;
137
138 range->max_encoding_tokens = 4;
139
140 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
141
142 switch (wdev->wiphy->signal_type) {
143 case CFG80211_SIGNAL_TYPE_NONE:
144 break;
145 case CFG80211_SIGNAL_TYPE_MBM:
146 range->max_qual.level = (u8)-110;
147 range->max_qual.qual = 70;
148 range->avg_qual.qual = 35;
149 range->max_qual.updated |= IW_QUAL_DBM;
150 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
151 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
152 break;
153 case CFG80211_SIGNAL_TYPE_UNSPEC:
154 range->max_qual.level = 100;
155 range->max_qual.qual = 100;
156 range->avg_qual.qual = 50;
157 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
158 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
159 break;
160 }
161
162 range->avg_qual.level = range->max_qual.level / 2;
163 range->avg_qual.noise = range->max_qual.noise / 2;
164 range->avg_qual.updated = range->max_qual.updated;
165
166 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
167 switch (wdev->wiphy->cipher_suites[i]) {
168 case WLAN_CIPHER_SUITE_TKIP:
169 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
170 IW_ENC_CAPA_WPA);
171 break;
172
173 case WLAN_CIPHER_SUITE_CCMP:
174 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
175 IW_ENC_CAPA_WPA2);
176 break;
177
178 case WLAN_CIPHER_SUITE_WEP40:
179 range->encoding_size[range->num_encoding_sizes++] =
180 WLAN_KEY_LEN_WEP40;
181 break;
182
183 case WLAN_CIPHER_SUITE_WEP104:
184 range->encoding_size[range->num_encoding_sizes++] =
185 WLAN_KEY_LEN_WEP104;
186 break;
187 }
188 }
189
190 for (band = 0; band < NUM_NL80211_BANDS; band ++) {
191 struct ieee80211_supported_band *sband;
192
193 sband = wdev->wiphy->bands[band];
194
195 if (!sband)
196 continue;
197
198 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
199 struct ieee80211_channel *chan = &sband->channels[i];
200
201 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
202 range->freq[c].i =
203 ieee80211_frequency_to_channel(
204 chan->center_freq);
205 range->freq[c].m = chan->center_freq;
206 range->freq[c].e = 6;
207 c++;
208 }
209 }
210 }
211 range->num_channels = c;
212 range->num_frequency = c;
213
214 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
215 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
216 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
217
218 if (wdev->wiphy->max_scan_ssids > 0)
219 range->scan_capa |= IW_SCAN_CAPA_ESSID;
220
221 return 0;
222}
223EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
224
225
226/**
227 * cfg80211_wext_freq - get wext frequency for non-"auto"
228 * @freq: the wext freq encoding
229 *
230 * Returns a frequency, or a negative error code, or 0 for auto.
231 */
232int cfg80211_wext_freq(struct iw_freq *freq)
233{
234 /*
235 * Parse frequency - return 0 for auto and
236 * -EINVAL for impossible things.
237 */
238 if (freq->e == 0) {
239 enum nl80211_band band = NL80211_BAND_2GHZ;
240 if (freq->m < 0)
241 return 0;
242 if (freq->m > 14)
243 band = NL80211_BAND_5GHZ;
244 return ieee80211_channel_to_frequency(freq->m, band);
245 } else {
246 int i, div = 1000000;
247 for (i = 0; i < freq->e; i++)
248 div /= 10;
249 if (div <= 0)
250 return -EINVAL;
251 return freq->m / div;
252 }
253}
254
255int cfg80211_wext_siwrts(struct net_device *dev,
256 struct iw_request_info *info,
257 union iwreq_data *wrqu, char *extra)
258{
259 struct iw_param *rts = &wrqu->rts;
260 struct wireless_dev *wdev = dev->ieee80211_ptr;
261 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
262 u32 orts = wdev->wiphy->rts_threshold;
263 int err;
264
265 wiphy_lock(&rdev->wiphy);
266 if (rts->disabled || !rts->fixed) {
267 wdev->wiphy->rts_threshold = (u32) -1;
268 } else if (rts->value < 0) {
269 err = -EINVAL;
270 goto out;
271 } else {
272 wdev->wiphy->rts_threshold = rts->value;
273 }
274
275 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
276
277 if (err)
278 wdev->wiphy->rts_threshold = orts;
279
280out:
281 wiphy_unlock(&rdev->wiphy);
282 return err;
283}
284EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
285
286int cfg80211_wext_giwrts(struct net_device *dev,
287 struct iw_request_info *info,
288 union iwreq_data *wrqu, char *extra)
289{
290 struct iw_param *rts = &wrqu->rts;
291 struct wireless_dev *wdev = dev->ieee80211_ptr;
292
293 rts->value = wdev->wiphy->rts_threshold;
294 rts->disabled = rts->value == (u32) -1;
295 rts->fixed = 1;
296
297 return 0;
298}
299EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
300
301int cfg80211_wext_siwfrag(struct net_device *dev,
302 struct iw_request_info *info,
303 union iwreq_data *wrqu, char *extra)
304{
305 struct iw_param *frag = &wrqu->frag;
306 struct wireless_dev *wdev = dev->ieee80211_ptr;
307 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
308 u32 ofrag = wdev->wiphy->frag_threshold;
309 int err;
310
311 wiphy_lock(&rdev->wiphy);
312 if (frag->disabled || !frag->fixed) {
313 wdev->wiphy->frag_threshold = (u32) -1;
314 } else if (frag->value < 256) {
315 err = -EINVAL;
316 goto out;
317 } else {
318 /* Fragment length must be even, so strip LSB. */
319 wdev->wiphy->frag_threshold = frag->value & ~0x1;
320 }
321
322 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
323 if (err)
324 wdev->wiphy->frag_threshold = ofrag;
325out:
326 wiphy_unlock(&rdev->wiphy);
327
328 return err;
329}
330EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
331
332int cfg80211_wext_giwfrag(struct net_device *dev,
333 struct iw_request_info *info,
334 union iwreq_data *wrqu, char *extra)
335{
336 struct iw_param *frag = &wrqu->frag;
337 struct wireless_dev *wdev = dev->ieee80211_ptr;
338
339 frag->value = wdev->wiphy->frag_threshold;
340 frag->disabled = frag->value == (u32) -1;
341 frag->fixed = 1;
342
343 return 0;
344}
345EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
346
347static int cfg80211_wext_siwretry(struct net_device *dev,
348 struct iw_request_info *info,
349 union iwreq_data *wrqu, char *extra)
350{
351 struct iw_param *retry = &wrqu->retry;
352 struct wireless_dev *wdev = dev->ieee80211_ptr;
353 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
354 u32 changed = 0;
355 u8 olong = wdev->wiphy->retry_long;
356 u8 oshort = wdev->wiphy->retry_short;
357 int err;
358
359 if (retry->disabled || retry->value < 1 || retry->value > 255 ||
360 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
361 return -EINVAL;
362
363 wiphy_lock(&rdev->wiphy);
364 if (retry->flags & IW_RETRY_LONG) {
365 wdev->wiphy->retry_long = retry->value;
366 changed |= WIPHY_PARAM_RETRY_LONG;
367 } else if (retry->flags & IW_RETRY_SHORT) {
368 wdev->wiphy->retry_short = retry->value;
369 changed |= WIPHY_PARAM_RETRY_SHORT;
370 } else {
371 wdev->wiphy->retry_short = retry->value;
372 wdev->wiphy->retry_long = retry->value;
373 changed |= WIPHY_PARAM_RETRY_LONG;
374 changed |= WIPHY_PARAM_RETRY_SHORT;
375 }
376
377 err = rdev_set_wiphy_params(rdev, changed);
378 if (err) {
379 wdev->wiphy->retry_short = oshort;
380 wdev->wiphy->retry_long = olong;
381 }
382 wiphy_unlock(&rdev->wiphy);
383
384 return err;
385}
386
387int cfg80211_wext_giwretry(struct net_device *dev,
388 struct iw_request_info *info,
389 union iwreq_data *wrqu, char *extra)
390{
391 struct iw_param *retry = &wrqu->retry;
392 struct wireless_dev *wdev = dev->ieee80211_ptr;
393
394 retry->disabled = 0;
395
396 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
397 /*
398 * First return short value, iwconfig will ask long value
399 * later if needed
400 */
401 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
402 retry->value = wdev->wiphy->retry_short;
403 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
404 retry->flags |= IW_RETRY_LONG;
405
406 return 0;
407 }
408
409 if (retry->flags & IW_RETRY_LONG) {
410 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
411 retry->value = wdev->wiphy->retry_long;
412 }
413
414 return 0;
415}
416EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
417
418static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
419 struct net_device *dev, bool pairwise,
420 const u8 *addr, bool remove, bool tx_key,
421 int idx, struct key_params *params)
422{
423 struct wireless_dev *wdev = dev->ieee80211_ptr;
424 int err, i;
425 bool rejoin = false;
426
427 if (wdev->valid_links)
428 return -EINVAL;
429
430 if (pairwise && !addr)
431 return -EINVAL;
432
433 /*
434 * In many cases we won't actually need this, but it's better
435 * to do it first in case the allocation fails. Don't use wext.
436 */
437 if (!wdev->wext.keys) {
438 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
439 GFP_KERNEL);
440 if (!wdev->wext.keys)
441 return -ENOMEM;
442 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
443 wdev->wext.keys->params[i].key =
444 wdev->wext.keys->data[i];
445 }
446
447 if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
448 wdev->iftype != NL80211_IFTYPE_STATION)
449 return -EOPNOTSUPP;
450
451 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
452 if (!wdev->connected)
453 return -ENOLINK;
454
455 if (!rdev->ops->set_default_mgmt_key)
456 return -EOPNOTSUPP;
457
458 if (idx < 4 || idx > 5)
459 return -EINVAL;
460 } else if (idx < 0 || idx > 3)
461 return -EINVAL;
462
463 if (remove) {
464 err = 0;
465 if (wdev->connected ||
466 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
467 wdev->u.ibss.current_bss)) {
468 /*
469 * If removing the current TX key, we will need to
470 * join a new IBSS without the privacy bit clear.
471 */
472 if (idx == wdev->wext.default_key &&
473 wdev->iftype == NL80211_IFTYPE_ADHOC) {
474 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
475 rejoin = true;
476 }
477
478 if (!pairwise && addr &&
479 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
480 err = -ENOENT;
481 else
482 err = rdev_del_key(rdev, dev, -1, idx, pairwise,
483 addr);
484 }
485 wdev->wext.connect.privacy = false;
486 /*
487 * Applications using wireless extensions expect to be
488 * able to delete keys that don't exist, so allow that.
489 */
490 if (err == -ENOENT)
491 err = 0;
492 if (!err) {
493 if (!addr && idx < 4) {
494 memset(wdev->wext.keys->data[idx], 0,
495 sizeof(wdev->wext.keys->data[idx]));
496 wdev->wext.keys->params[idx].key_len = 0;
497 wdev->wext.keys->params[idx].cipher = 0;
498 }
499 if (idx == wdev->wext.default_key)
500 wdev->wext.default_key = -1;
501 else if (idx == wdev->wext.default_mgmt_key)
502 wdev->wext.default_mgmt_key = -1;
503 }
504
505 if (!err && rejoin)
506 err = cfg80211_ibss_wext_join(rdev, wdev);
507
508 return err;
509 }
510
511 if (addr)
512 tx_key = false;
513
514 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
515 return -EINVAL;
516
517 err = 0;
518 if (wdev->connected ||
519 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
520 wdev->u.ibss.current_bss))
521 err = rdev_add_key(rdev, dev, -1, idx, pairwise, addr, params);
522 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
523 params->cipher != WLAN_CIPHER_SUITE_WEP104)
524 return -EINVAL;
525 if (err)
526 return err;
527
528 /*
529 * We only need to store WEP keys, since they're the only keys that
530 * can be set before a connection is established and persist after
531 * disconnecting.
532 */
533 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
534 params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
535 wdev->wext.keys->params[idx] = *params;
536 memcpy(wdev->wext.keys->data[idx],
537 params->key, params->key_len);
538 wdev->wext.keys->params[idx].key =
539 wdev->wext.keys->data[idx];
540 }
541
542 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
543 params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
544 (tx_key || (!addr && wdev->wext.default_key == -1))) {
545 if (wdev->connected ||
546 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
547 wdev->u.ibss.current_bss)) {
548 /*
549 * If we are getting a new TX key from not having
550 * had one before we need to join a new IBSS with
551 * the privacy bit set.
552 */
553 if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
554 wdev->wext.default_key == -1) {
555 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
556 rejoin = true;
557 }
558 err = rdev_set_default_key(rdev, dev, -1, idx, true,
559 true);
560 }
561 if (!err) {
562 wdev->wext.default_key = idx;
563 if (rejoin)
564 err = cfg80211_ibss_wext_join(rdev, wdev);
565 }
566 return err;
567 }
568
569 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
570 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
571 if (wdev->connected ||
572 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
573 wdev->u.ibss.current_bss))
574 err = rdev_set_default_mgmt_key(rdev, dev, -1, idx);
575 if (!err)
576 wdev->wext.default_mgmt_key = idx;
577 return err;
578 }
579
580 return 0;
581}
582
583static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
584 struct net_device *dev, bool pairwise,
585 const u8 *addr, bool remove, bool tx_key,
586 int idx, struct key_params *params)
587{
588 int err;
589
590 wdev_lock(dev->ieee80211_ptr);
591 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
592 remove, tx_key, idx, params);
593 wdev_unlock(dev->ieee80211_ptr);
594
595 return err;
596}
597
598static int cfg80211_wext_siwencode(struct net_device *dev,
599 struct iw_request_info *info,
600 union iwreq_data *wrqu, char *keybuf)
601{
602 struct iw_point *erq = &wrqu->encoding;
603 struct wireless_dev *wdev = dev->ieee80211_ptr;
604 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
605 int idx, err;
606 bool remove = false;
607 struct key_params params;
608
609 if (wdev->iftype != NL80211_IFTYPE_STATION &&
610 wdev->iftype != NL80211_IFTYPE_ADHOC)
611 return -EOPNOTSUPP;
612
613 /* no use -- only MFP (set_default_mgmt_key) is optional */
614 if (!rdev->ops->del_key ||
615 !rdev->ops->add_key ||
616 !rdev->ops->set_default_key)
617 return -EOPNOTSUPP;
618
619 wiphy_lock(&rdev->wiphy);
620 if (wdev->valid_links) {
621 err = -EOPNOTSUPP;
622 goto out;
623 }
624
625 idx = erq->flags & IW_ENCODE_INDEX;
626 if (idx == 0) {
627 idx = wdev->wext.default_key;
628 if (idx < 0)
629 idx = 0;
630 } else if (idx < 1 || idx > 4) {
631 err = -EINVAL;
632 goto out;
633 } else {
634 idx--;
635 }
636
637 if (erq->flags & IW_ENCODE_DISABLED)
638 remove = true;
639 else if (erq->length == 0) {
640 /* No key data - just set the default TX key index */
641 err = 0;
642 wdev_lock(wdev);
643 if (wdev->connected ||
644 (wdev->iftype == NL80211_IFTYPE_ADHOC &&
645 wdev->u.ibss.current_bss))
646 err = rdev_set_default_key(rdev, dev, -1, idx, true,
647 true);
648 if (!err)
649 wdev->wext.default_key = idx;
650 wdev_unlock(wdev);
651 goto out;
652 }
653
654 memset(¶ms, 0, sizeof(params));
655 params.key = keybuf;
656 params.key_len = erq->length;
657 if (erq->length == 5) {
658 params.cipher = WLAN_CIPHER_SUITE_WEP40;
659 } else if (erq->length == 13) {
660 params.cipher = WLAN_CIPHER_SUITE_WEP104;
661 } else if (!remove) {
662 err = -EINVAL;
663 goto out;
664 }
665
666 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
667 wdev->wext.default_key == -1,
668 idx, ¶ms);
669out:
670 wiphy_unlock(&rdev->wiphy);
671
672 return err;
673}
674
675static int cfg80211_wext_siwencodeext(struct net_device *dev,
676 struct iw_request_info *info,
677 union iwreq_data *wrqu, char *extra)
678{
679 struct iw_point *erq = &wrqu->encoding;
680 struct wireless_dev *wdev = dev->ieee80211_ptr;
681 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
682 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
683 const u8 *addr;
684 int idx;
685 bool remove = false;
686 struct key_params params;
687 u32 cipher;
688 int ret;
689
690 if (wdev->iftype != NL80211_IFTYPE_STATION &&
691 wdev->iftype != NL80211_IFTYPE_ADHOC)
692 return -EOPNOTSUPP;
693
694 /* no use -- only MFP (set_default_mgmt_key) is optional */
695 if (!rdev->ops->del_key ||
696 !rdev->ops->add_key ||
697 !rdev->ops->set_default_key)
698 return -EOPNOTSUPP;
699
700 wdev_lock(wdev);
701 if (wdev->valid_links) {
702 wdev_unlock(wdev);
703 return -EOPNOTSUPP;
704 }
705 wdev_unlock(wdev);
706
707 switch (ext->alg) {
708 case IW_ENCODE_ALG_NONE:
709 remove = true;
710 cipher = 0;
711 break;
712 case IW_ENCODE_ALG_WEP:
713 if (ext->key_len == 5)
714 cipher = WLAN_CIPHER_SUITE_WEP40;
715 else if (ext->key_len == 13)
716 cipher = WLAN_CIPHER_SUITE_WEP104;
717 else
718 return -EINVAL;
719 break;
720 case IW_ENCODE_ALG_TKIP:
721 cipher = WLAN_CIPHER_SUITE_TKIP;
722 break;
723 case IW_ENCODE_ALG_CCMP:
724 cipher = WLAN_CIPHER_SUITE_CCMP;
725 break;
726 case IW_ENCODE_ALG_AES_CMAC:
727 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
728 break;
729 default:
730 return -EOPNOTSUPP;
731 }
732
733 if (erq->flags & IW_ENCODE_DISABLED)
734 remove = true;
735
736 idx = erq->flags & IW_ENCODE_INDEX;
737 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
738 if (idx < 4 || idx > 5) {
739 idx = wdev->wext.default_mgmt_key;
740 if (idx < 0)
741 return -EINVAL;
742 } else
743 idx--;
744 } else {
745 if (idx < 1 || idx > 4) {
746 idx = wdev->wext.default_key;
747 if (idx < 0)
748 return -EINVAL;
749 } else
750 idx--;
751 }
752
753 addr = ext->addr.sa_data;
754 if (is_broadcast_ether_addr(addr))
755 addr = NULL;
756
757 memset(¶ms, 0, sizeof(params));
758 params.key = ext->key;
759 params.key_len = ext->key_len;
760 params.cipher = cipher;
761
762 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
763 params.seq = ext->rx_seq;
764 params.seq_len = 6;
765 }
766
767 wiphy_lock(wdev->wiphy);
768 ret = cfg80211_set_encryption(
769 rdev, dev,
770 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
771 addr, remove,
772 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
773 idx, ¶ms);
774 wiphy_unlock(wdev->wiphy);
775
776 return ret;
777}
778
779static int cfg80211_wext_giwencode(struct net_device *dev,
780 struct iw_request_info *info,
781 union iwreq_data *wrqu, char *keybuf)
782{
783 struct iw_point *erq = &wrqu->encoding;
784 struct wireless_dev *wdev = dev->ieee80211_ptr;
785 int idx;
786
787 if (wdev->iftype != NL80211_IFTYPE_STATION &&
788 wdev->iftype != NL80211_IFTYPE_ADHOC)
789 return -EOPNOTSUPP;
790
791 idx = erq->flags & IW_ENCODE_INDEX;
792 if (idx == 0) {
793 idx = wdev->wext.default_key;
794 if (idx < 0)
795 idx = 0;
796 } else if (idx < 1 || idx > 4)
797 return -EINVAL;
798 else
799 idx--;
800
801 erq->flags = idx + 1;
802
803 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
804 erq->flags |= IW_ENCODE_DISABLED;
805 erq->length = 0;
806 return 0;
807 }
808
809 erq->length = min_t(size_t, erq->length,
810 wdev->wext.keys->params[idx].key_len);
811 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
812 erq->flags |= IW_ENCODE_ENABLED;
813
814 return 0;
815}
816
817static int cfg80211_wext_siwfreq(struct net_device *dev,
818 struct iw_request_info *info,
819 union iwreq_data *wrqu, char *extra)
820{
821 struct iw_freq *wextfreq = &wrqu->freq;
822 struct wireless_dev *wdev = dev->ieee80211_ptr;
823 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
824 struct cfg80211_chan_def chandef = {
825 .width = NL80211_CHAN_WIDTH_20_NOHT,
826 };
827 int freq, ret;
828
829 wiphy_lock(&rdev->wiphy);
830
831 switch (wdev->iftype) {
832 case NL80211_IFTYPE_STATION:
833 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
834 break;
835 case NL80211_IFTYPE_ADHOC:
836 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
837 break;
838 case NL80211_IFTYPE_MONITOR:
839 freq = cfg80211_wext_freq(wextfreq);
840 if (freq < 0) {
841 ret = freq;
842 break;
843 }
844 if (freq == 0) {
845 ret = -EINVAL;
846 break;
847 }
848 chandef.center_freq1 = freq;
849 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
850 if (!chandef.chan) {
851 ret = -EINVAL;
852 break;
853 }
854 ret = cfg80211_set_monitor_channel(rdev, &chandef);
855 break;
856 case NL80211_IFTYPE_MESH_POINT:
857 freq = cfg80211_wext_freq(wextfreq);
858 if (freq < 0) {
859 ret = freq;
860 break;
861 }
862 if (freq == 0) {
863 ret = -EINVAL;
864 break;
865 }
866 chandef.center_freq1 = freq;
867 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
868 if (!chandef.chan) {
869 ret = -EINVAL;
870 break;
871 }
872 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
873 break;
874 default:
875 ret = -EOPNOTSUPP;
876 break;
877 }
878
879 wiphy_unlock(&rdev->wiphy);
880
881 return ret;
882}
883
884static int cfg80211_wext_giwfreq(struct net_device *dev,
885 struct iw_request_info *info,
886 union iwreq_data *wrqu, char *extra)
887{
888 struct iw_freq *freq = &wrqu->freq;
889 struct wireless_dev *wdev = dev->ieee80211_ptr;
890 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
891 struct cfg80211_chan_def chandef = {};
892 int ret;
893
894 wiphy_lock(&rdev->wiphy);
895 switch (wdev->iftype) {
896 case NL80211_IFTYPE_STATION:
897 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
898 break;
899 case NL80211_IFTYPE_ADHOC:
900 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
901 break;
902 case NL80211_IFTYPE_MONITOR:
903 if (!rdev->ops->get_channel) {
904 ret = -EINVAL;
905 break;
906 }
907
908 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
909 if (ret)
910 break;
911 freq->m = chandef.chan->center_freq;
912 freq->e = 6;
913 ret = 0;
914 break;
915 default:
916 ret = -EINVAL;
917 break;
918 }
919
920 wiphy_unlock(&rdev->wiphy);
921
922 return ret;
923}
924
925static int cfg80211_wext_siwtxpower(struct net_device *dev,
926 struct iw_request_info *info,
927 union iwreq_data *data, char *extra)
928{
929 struct wireless_dev *wdev = dev->ieee80211_ptr;
930 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
931 enum nl80211_tx_power_setting type;
932 int dbm = 0;
933 int ret;
934
935 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
936 return -EINVAL;
937 if (data->txpower.flags & IW_TXPOW_RANGE)
938 return -EINVAL;
939
940 if (!rdev->ops->set_tx_power)
941 return -EOPNOTSUPP;
942
943 /* only change when not disabling */
944 if (!data->txpower.disabled) {
945 rfkill_set_sw_state(rdev->wiphy.rfkill, false);
946
947 if (data->txpower.fixed) {
948 /*
949 * wext doesn't support negative values, see
950 * below where it's for automatic
951 */
952 if (data->txpower.value < 0)
953 return -EINVAL;
954 dbm = data->txpower.value;
955 type = NL80211_TX_POWER_FIXED;
956 /* TODO: do regulatory check! */
957 } else {
958 /*
959 * Automatic power level setting, max being the value
960 * passed in from userland.
961 */
962 if (data->txpower.value < 0) {
963 type = NL80211_TX_POWER_AUTOMATIC;
964 } else {
965 dbm = data->txpower.value;
966 type = NL80211_TX_POWER_LIMITED;
967 }
968 }
969 } else {
970 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
971 schedule_work(&rdev->rfkill_block);
972 return 0;
973 }
974
975 wiphy_lock(&rdev->wiphy);
976 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
977 wiphy_unlock(&rdev->wiphy);
978
979 return ret;
980}
981
982static int cfg80211_wext_giwtxpower(struct net_device *dev,
983 struct iw_request_info *info,
984 union iwreq_data *data, char *extra)
985{
986 struct wireless_dev *wdev = dev->ieee80211_ptr;
987 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
988 int err, val;
989
990 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
991 return -EINVAL;
992 if (data->txpower.flags & IW_TXPOW_RANGE)
993 return -EINVAL;
994
995 if (!rdev->ops->get_tx_power)
996 return -EOPNOTSUPP;
997
998 wiphy_lock(&rdev->wiphy);
999 err = rdev_get_tx_power(rdev, wdev, &val);
1000 wiphy_unlock(&rdev->wiphy);
1001 if (err)
1002 return err;
1003
1004 /* well... oh well */
1005 data->txpower.fixed = 1;
1006 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
1007 data->txpower.value = val;
1008 data->txpower.flags = IW_TXPOW_DBM;
1009
1010 return 0;
1011}
1012
1013static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
1014 s32 auth_alg)
1015{
1016 int nr_alg = 0;
1017
1018 if (!auth_alg)
1019 return -EINVAL;
1020
1021 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
1022 IW_AUTH_ALG_SHARED_KEY |
1023 IW_AUTH_ALG_LEAP))
1024 return -EINVAL;
1025
1026 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
1027 nr_alg++;
1028 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1029 }
1030
1031 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
1032 nr_alg++;
1033 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1034 }
1035
1036 if (auth_alg & IW_AUTH_ALG_LEAP) {
1037 nr_alg++;
1038 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
1039 }
1040
1041 if (nr_alg > 1)
1042 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1043
1044 return 0;
1045}
1046
1047static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
1048{
1049 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
1050 IW_AUTH_WPA_VERSION_WPA2|
1051 IW_AUTH_WPA_VERSION_DISABLED))
1052 return -EINVAL;
1053
1054 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
1055 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
1056 IW_AUTH_WPA_VERSION_WPA2)))
1057 return -EINVAL;
1058
1059 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
1060 wdev->wext.connect.crypto.wpa_versions &=
1061 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
1062
1063 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
1064 wdev->wext.connect.crypto.wpa_versions |=
1065 NL80211_WPA_VERSION_1;
1066
1067 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
1068 wdev->wext.connect.crypto.wpa_versions |=
1069 NL80211_WPA_VERSION_2;
1070
1071 return 0;
1072}
1073
1074static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
1075{
1076 if (cipher & IW_AUTH_CIPHER_WEP40)
1077 wdev->wext.connect.crypto.cipher_group =
1078 WLAN_CIPHER_SUITE_WEP40;
1079 else if (cipher & IW_AUTH_CIPHER_WEP104)
1080 wdev->wext.connect.crypto.cipher_group =
1081 WLAN_CIPHER_SUITE_WEP104;
1082 else if (cipher & IW_AUTH_CIPHER_TKIP)
1083 wdev->wext.connect.crypto.cipher_group =
1084 WLAN_CIPHER_SUITE_TKIP;
1085 else if (cipher & IW_AUTH_CIPHER_CCMP)
1086 wdev->wext.connect.crypto.cipher_group =
1087 WLAN_CIPHER_SUITE_CCMP;
1088 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1089 wdev->wext.connect.crypto.cipher_group =
1090 WLAN_CIPHER_SUITE_AES_CMAC;
1091 else if (cipher & IW_AUTH_CIPHER_NONE)
1092 wdev->wext.connect.crypto.cipher_group = 0;
1093 else
1094 return -EINVAL;
1095
1096 return 0;
1097}
1098
1099static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1100{
1101 int nr_ciphers = 0;
1102 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1103
1104 if (cipher & IW_AUTH_CIPHER_WEP40) {
1105 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1106 nr_ciphers++;
1107 }
1108
1109 if (cipher & IW_AUTH_CIPHER_WEP104) {
1110 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1111 nr_ciphers++;
1112 }
1113
1114 if (cipher & IW_AUTH_CIPHER_TKIP) {
1115 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1116 nr_ciphers++;
1117 }
1118
1119 if (cipher & IW_AUTH_CIPHER_CCMP) {
1120 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1121 nr_ciphers++;
1122 }
1123
1124 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1125 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1126 nr_ciphers++;
1127 }
1128
1129 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1130
1131 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1132
1133 return 0;
1134}
1135
1136
1137static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1138{
1139 int nr_akm_suites = 0;
1140
1141 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1142 IW_AUTH_KEY_MGMT_PSK))
1143 return -EINVAL;
1144
1145 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1146 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1147 WLAN_AKM_SUITE_8021X;
1148 nr_akm_suites++;
1149 }
1150
1151 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1152 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1153 WLAN_AKM_SUITE_PSK;
1154 nr_akm_suites++;
1155 }
1156
1157 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1158
1159 return 0;
1160}
1161
1162static int cfg80211_wext_siwauth(struct net_device *dev,
1163 struct iw_request_info *info,
1164 union iwreq_data *wrqu, char *extra)
1165{
1166 struct iw_param *data = &wrqu->param;
1167 struct wireless_dev *wdev = dev->ieee80211_ptr;
1168
1169 if (wdev->iftype != NL80211_IFTYPE_STATION)
1170 return -EOPNOTSUPP;
1171
1172 switch (data->flags & IW_AUTH_INDEX) {
1173 case IW_AUTH_PRIVACY_INVOKED:
1174 wdev->wext.connect.privacy = data->value;
1175 return 0;
1176 case IW_AUTH_WPA_VERSION:
1177 return cfg80211_set_wpa_version(wdev, data->value);
1178 case IW_AUTH_CIPHER_GROUP:
1179 return cfg80211_set_cipher_group(wdev, data->value);
1180 case IW_AUTH_KEY_MGMT:
1181 return cfg80211_set_key_mgt(wdev, data->value);
1182 case IW_AUTH_CIPHER_PAIRWISE:
1183 return cfg80211_set_cipher_pairwise(wdev, data->value);
1184 case IW_AUTH_80211_AUTH_ALG:
1185 return cfg80211_set_auth_alg(wdev, data->value);
1186 case IW_AUTH_WPA_ENABLED:
1187 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1188 case IW_AUTH_DROP_UNENCRYPTED:
1189 case IW_AUTH_MFP:
1190 return 0;
1191 default:
1192 return -EOPNOTSUPP;
1193 }
1194}
1195
1196static int cfg80211_wext_giwauth(struct net_device *dev,
1197 struct iw_request_info *info,
1198 union iwreq_data *wrqu, char *extra)
1199{
1200 /* XXX: what do we need? */
1201
1202 return -EOPNOTSUPP;
1203}
1204
1205static int cfg80211_wext_siwpower(struct net_device *dev,
1206 struct iw_request_info *info,
1207 union iwreq_data *wrqu, char *extra)
1208{
1209 struct iw_param *wrq = &wrqu->power;
1210 struct wireless_dev *wdev = dev->ieee80211_ptr;
1211 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1212 bool ps;
1213 int timeout = wdev->ps_timeout;
1214 int err;
1215
1216 if (wdev->iftype != NL80211_IFTYPE_STATION)
1217 return -EINVAL;
1218
1219 if (!rdev->ops->set_power_mgmt)
1220 return -EOPNOTSUPP;
1221
1222 if (wrq->disabled) {
1223 ps = false;
1224 } else {
1225 switch (wrq->flags & IW_POWER_MODE) {
1226 case IW_POWER_ON: /* If not specified */
1227 case IW_POWER_MODE: /* If set all mask */
1228 case IW_POWER_ALL_R: /* If explicitely state all */
1229 ps = true;
1230 break;
1231 default: /* Otherwise we ignore */
1232 return -EINVAL;
1233 }
1234
1235 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1236 return -EINVAL;
1237
1238 if (wrq->flags & IW_POWER_TIMEOUT)
1239 timeout = wrq->value / 1000;
1240 }
1241
1242 wiphy_lock(&rdev->wiphy);
1243 err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1244 wiphy_unlock(&rdev->wiphy);
1245 if (err)
1246 return err;
1247
1248 wdev->ps = ps;
1249 wdev->ps_timeout = timeout;
1250
1251 return 0;
1252
1253}
1254
1255static int cfg80211_wext_giwpower(struct net_device *dev,
1256 struct iw_request_info *info,
1257 union iwreq_data *wrqu, char *extra)
1258{
1259 struct iw_param *wrq = &wrqu->power;
1260 struct wireless_dev *wdev = dev->ieee80211_ptr;
1261
1262 wrq->disabled = !wdev->ps;
1263
1264 return 0;
1265}
1266
1267static int cfg80211_wext_siwrate(struct net_device *dev,
1268 struct iw_request_info *info,
1269 union iwreq_data *wrqu, char *extra)
1270{
1271 struct iw_param *rate = &wrqu->bitrate;
1272 struct wireless_dev *wdev = dev->ieee80211_ptr;
1273 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1274 struct cfg80211_bitrate_mask mask;
1275 u32 fixed, maxrate;
1276 struct ieee80211_supported_band *sband;
1277 int band, ridx, ret;
1278 bool match = false;
1279
1280 if (!rdev->ops->set_bitrate_mask)
1281 return -EOPNOTSUPP;
1282
1283 memset(&mask, 0, sizeof(mask));
1284 fixed = 0;
1285 maxrate = (u32)-1;
1286
1287 if (rate->value < 0) {
1288 /* nothing */
1289 } else if (rate->fixed) {
1290 fixed = rate->value / 100000;
1291 } else {
1292 maxrate = rate->value / 100000;
1293 }
1294
1295 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1296 sband = wdev->wiphy->bands[band];
1297 if (sband == NULL)
1298 continue;
1299 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1300 struct ieee80211_rate *srate = &sband->bitrates[ridx];
1301 if (fixed == srate->bitrate) {
1302 mask.control[band].legacy = 1 << ridx;
1303 match = true;
1304 break;
1305 }
1306 if (srate->bitrate <= maxrate) {
1307 mask.control[band].legacy |= 1 << ridx;
1308 match = true;
1309 }
1310 }
1311 }
1312
1313 if (!match)
1314 return -EINVAL;
1315
1316 wiphy_lock(&rdev->wiphy);
1317 if (dev->ieee80211_ptr->valid_links)
1318 ret = -EOPNOTSUPP;
1319 else
1320 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask);
1321 wiphy_unlock(&rdev->wiphy);
1322
1323 return ret;
1324}
1325
1326static int cfg80211_wext_giwrate(struct net_device *dev,
1327 struct iw_request_info *info,
1328 union iwreq_data *wrqu, char *extra)
1329{
1330 struct iw_param *rate = &wrqu->bitrate;
1331 struct wireless_dev *wdev = dev->ieee80211_ptr;
1332 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1333 struct station_info sinfo = {};
1334 u8 addr[ETH_ALEN];
1335 int err;
1336
1337 if (wdev->iftype != NL80211_IFTYPE_STATION)
1338 return -EOPNOTSUPP;
1339
1340 if (!rdev->ops->get_station)
1341 return -EOPNOTSUPP;
1342
1343 err = 0;
1344 wdev_lock(wdev);
1345 if (!wdev->valid_links && wdev->links[0].client.current_bss)
1346 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid,
1347 ETH_ALEN);
1348 else
1349 err = -EOPNOTSUPP;
1350 wdev_unlock(wdev);
1351 if (err)
1352 return err;
1353
1354 wiphy_lock(&rdev->wiphy);
1355 err = rdev_get_station(rdev, dev, addr, &sinfo);
1356 wiphy_unlock(&rdev->wiphy);
1357 if (err)
1358 return err;
1359
1360 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1361 err = -EOPNOTSUPP;
1362 goto free;
1363 }
1364
1365 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1366
1367free:
1368 cfg80211_sinfo_release_content(&sinfo);
1369 return err;
1370}
1371
1372/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1373static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1374{
1375 struct wireless_dev *wdev = dev->ieee80211_ptr;
1376 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1377 /* we are under RTNL - globally locked - so can use static structs */
1378 static struct iw_statistics wstats;
1379 static struct station_info sinfo = {};
1380 u8 bssid[ETH_ALEN];
1381 int ret;
1382
1383 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1384 return NULL;
1385
1386 if (!rdev->ops->get_station)
1387 return NULL;
1388
1389 /* Grab BSSID of current BSS, if any */
1390 wdev_lock(wdev);
1391 if (wdev->valid_links || !wdev->links[0].client.current_bss) {
1392 wdev_unlock(wdev);
1393 return NULL;
1394 }
1395 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN);
1396 wdev_unlock(wdev);
1397
1398 memset(&sinfo, 0, sizeof(sinfo));
1399
1400 wiphy_lock(&rdev->wiphy);
1401 ret = rdev_get_station(rdev, dev, bssid, &sinfo);
1402 wiphy_unlock(&rdev->wiphy);
1403
1404 if (ret)
1405 return NULL;
1406
1407 memset(&wstats, 0, sizeof(wstats));
1408
1409 switch (rdev->wiphy.signal_type) {
1410 case CFG80211_SIGNAL_TYPE_MBM:
1411 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1412 int sig = sinfo.signal;
1413 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1414 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1415 wstats.qual.updated |= IW_QUAL_DBM;
1416 wstats.qual.level = sig;
1417 if (sig < -110)
1418 sig = -110;
1419 else if (sig > -40)
1420 sig = -40;
1421 wstats.qual.qual = sig + 110;
1422 break;
1423 }
1424 fallthrough;
1425 case CFG80211_SIGNAL_TYPE_UNSPEC:
1426 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1427 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1428 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1429 wstats.qual.level = sinfo.signal;
1430 wstats.qual.qual = sinfo.signal;
1431 break;
1432 }
1433 fallthrough;
1434 default:
1435 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1436 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1437 }
1438
1439 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1440 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1441 wstats.discard.misc = sinfo.rx_dropped_misc;
1442 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1443 wstats.discard.retries = sinfo.tx_failed;
1444
1445 cfg80211_sinfo_release_content(&sinfo);
1446
1447 return &wstats;
1448}
1449
1450static int cfg80211_wext_siwap(struct net_device *dev,
1451 struct iw_request_info *info,
1452 union iwreq_data *wrqu, char *extra)
1453{
1454 struct sockaddr *ap_addr = &wrqu->ap_addr;
1455 struct wireless_dev *wdev = dev->ieee80211_ptr;
1456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1457 int ret;
1458
1459 wiphy_lock(&rdev->wiphy);
1460 switch (wdev->iftype) {
1461 case NL80211_IFTYPE_ADHOC:
1462 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1463 break;
1464 case NL80211_IFTYPE_STATION:
1465 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1466 break;
1467 default:
1468 ret = -EOPNOTSUPP;
1469 break;
1470 }
1471 wiphy_unlock(&rdev->wiphy);
1472
1473 return ret;
1474}
1475
1476static int cfg80211_wext_giwap(struct net_device *dev,
1477 struct iw_request_info *info,
1478 union iwreq_data *wrqu, char *extra)
1479{
1480 struct sockaddr *ap_addr = &wrqu->ap_addr;
1481 struct wireless_dev *wdev = dev->ieee80211_ptr;
1482 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1483 int ret;
1484
1485 wiphy_lock(&rdev->wiphy);
1486 switch (wdev->iftype) {
1487 case NL80211_IFTYPE_ADHOC:
1488 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1489 break;
1490 case NL80211_IFTYPE_STATION:
1491 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1492 break;
1493 default:
1494 ret = -EOPNOTSUPP;
1495 break;
1496 }
1497 wiphy_unlock(&rdev->wiphy);
1498
1499 return ret;
1500}
1501
1502static int cfg80211_wext_siwessid(struct net_device *dev,
1503 struct iw_request_info *info,
1504 union iwreq_data *wrqu, char *ssid)
1505{
1506 struct iw_point *data = &wrqu->data;
1507 struct wireless_dev *wdev = dev->ieee80211_ptr;
1508 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1509 int ret;
1510
1511 wiphy_lock(&rdev->wiphy);
1512 switch (wdev->iftype) {
1513 case NL80211_IFTYPE_ADHOC:
1514 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1515 break;
1516 case NL80211_IFTYPE_STATION:
1517 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1518 break;
1519 default:
1520 ret = -EOPNOTSUPP;
1521 break;
1522 }
1523 wiphy_unlock(&rdev->wiphy);
1524
1525 return ret;
1526}
1527
1528static int cfg80211_wext_giwessid(struct net_device *dev,
1529 struct iw_request_info *info,
1530 union iwreq_data *wrqu, char *ssid)
1531{
1532 struct iw_point *data = &wrqu->data;
1533 struct wireless_dev *wdev = dev->ieee80211_ptr;
1534 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1535 int ret;
1536
1537 data->flags = 0;
1538 data->length = 0;
1539
1540 wiphy_lock(&rdev->wiphy);
1541 switch (wdev->iftype) {
1542 case NL80211_IFTYPE_ADHOC:
1543 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1544 break;
1545 case NL80211_IFTYPE_STATION:
1546 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1547 break;
1548 default:
1549 ret = -EOPNOTSUPP;
1550 break;
1551 }
1552 wiphy_unlock(&rdev->wiphy);
1553
1554 return ret;
1555}
1556
1557static int cfg80211_wext_siwpmksa(struct net_device *dev,
1558 struct iw_request_info *info,
1559 union iwreq_data *wrqu, char *extra)
1560{
1561 struct wireless_dev *wdev = dev->ieee80211_ptr;
1562 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1563 struct cfg80211_pmksa cfg_pmksa;
1564 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1565 int ret;
1566
1567 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1568
1569 if (wdev->iftype != NL80211_IFTYPE_STATION)
1570 return -EINVAL;
1571
1572 cfg_pmksa.bssid = pmksa->bssid.sa_data;
1573 cfg_pmksa.pmkid = pmksa->pmkid;
1574
1575 wiphy_lock(&rdev->wiphy);
1576 switch (pmksa->cmd) {
1577 case IW_PMKSA_ADD:
1578 if (!rdev->ops->set_pmksa) {
1579 ret = -EOPNOTSUPP;
1580 break;
1581 }
1582
1583 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1584 break;
1585 case IW_PMKSA_REMOVE:
1586 if (!rdev->ops->del_pmksa) {
1587 ret = -EOPNOTSUPP;
1588 break;
1589 }
1590
1591 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1592 break;
1593 case IW_PMKSA_FLUSH:
1594 if (!rdev->ops->flush_pmksa) {
1595 ret = -EOPNOTSUPP;
1596 break;
1597 }
1598
1599 ret = rdev_flush_pmksa(rdev, dev);
1600 break;
1601 default:
1602 ret = -EOPNOTSUPP;
1603 break;
1604 }
1605 wiphy_unlock(&rdev->wiphy);
1606
1607 return ret;
1608}
1609
1610static const iw_handler cfg80211_handlers[] = {
1611 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
1612 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq),
1613 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq),
1614 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode),
1615 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode),
1616 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange),
1617 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap),
1618 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap),
1619 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme),
1620 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan),
1621 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan),
1622 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid),
1623 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid),
1624 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate),
1625 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate),
1626 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts),
1627 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts),
1628 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag),
1629 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag),
1630 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower),
1631 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower),
1632 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry),
1633 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
1634 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode),
1635 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode),
1636 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower),
1637 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower),
1638 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie),
1639 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth),
1640 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth),
1641 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext),
1642 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa),
1643};
1644
1645const struct iw_handler_def cfg80211_wext_handler = {
1646 .num_standard = ARRAY_SIZE(cfg80211_handlers),
1647 .standard = cfg80211_handlers,
1648 .get_wireless_stats = cfg80211_wireless_stats,
1649};