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cfg80211: emulate connect with auth/assoc
[linux-2.6-block.git] / net / wireless / wext-compat.c
CommitLineData
fee52678
JB		 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 *
08645126 8 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
fee52678
JB		 9 */
10
11#include <linux/wireless.h>
12#include <linux/nl80211.h>
691597cb 13#include <linux/if_arp.h>
08645126 14#include <linux/etherdevice.h>
fee52678 15#include <net/iw_handler.h>
fee52678
JB		 16#include <net/cfg80211.h>
17#include "core.h"
18
19int cfg80211_wext_giwname(struct net_device *dev,
20 struct iw_request_info *info,
21 char *name, char *extra)
22{
23 struct wireless_dev *wdev = dev->ieee80211_ptr;
24 struct ieee80211_supported_band *sband;
25 bool is_ht = false, is_a = false, is_b = false, is_g = false;
26
27 if (!wdev)
28 return -EOPNOTSUPP;
29
30 sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
31 if (sband) {
32 is_a = true;
33 is_ht |= sband->ht_cap.ht_supported;
34 }
35
36 sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
37 if (sband) {
38 int i;
39 /* Check for mandatory rates */
40 for (i = 0; i < sband->n_bitrates; i++) {
41 if (sband->bitrates[i].bitrate == 10)
42 is_b = true;
43 if (sband->bitrates[i].bitrate == 60)
44 is_g = true;
45 }
46 is_ht |= sband->ht_cap.ht_supported;
47 }
48
49 strcpy(name, "IEEE 802.11");
50 if (is_a)
51 strcat(name, "a");
52 if (is_b)
53 strcat(name, "b");
54 if (is_g)
55 strcat(name, "g");
56 if (is_ht)
57 strcat(name, "n");
58
59 return 0;
60}
ba44cb72 61EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
e60c7744
JB		 62
63int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
64 u32 *mode, char *extra)
65{
66 struct wireless_dev *wdev = dev->ieee80211_ptr;
67 struct cfg80211_registered_device *rdev;
68 struct vif_params vifparams;
69 enum nl80211_iftype type;
ac7f9cfa 70 int ret;
e60c7744
JB		 71
72 if (!wdev)
73 return -EOPNOTSUPP;
74
75 rdev = wiphy_to_dev(wdev->wiphy);
76
77 if (!rdev->ops->change_virtual_intf)
78 return -EOPNOTSUPP;
79
80 /* don't support changing VLANs, you just re-create them */
81 if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
82 return -EOPNOTSUPP;
83
84 switch (*mode) {
85 case IW_MODE_INFRA:
86 type = NL80211_IFTYPE_STATION;
87 break;
88 case IW_MODE_ADHOC:
89 type = NL80211_IFTYPE_ADHOC;
90 break;
91 case IW_MODE_REPEAT:
92 type = NL80211_IFTYPE_WDS;
93 break;
94 case IW_MODE_MONITOR:
95 type = NL80211_IFTYPE_MONITOR;
96 break;
97 default:
98 return -EINVAL;
99 }
100
ac7f9cfa
JB		 101 if (type == wdev->iftype)
102 return 0;
103
e60c7744
JB		 104 memset(&vifparams, 0, sizeof(vifparams));
105
e36d56b6 106 ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev, type,
ac7f9cfa
JB		 107 NULL, &vifparams);
108 WARN_ON(!ret && wdev->iftype != type);
109
110 return ret;
e60c7744 111}
ba44cb72 112EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
e60c7744
JB		 113
114int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
115 u32 *mode, char *extra)
116{
117 struct wireless_dev *wdev = dev->ieee80211_ptr;
118
119 if (!wdev)
120 return -EOPNOTSUPP;
121
122 switch (wdev->iftype) {
123 case NL80211_IFTYPE_AP:
124 *mode = IW_MODE_MASTER;
125 break;
126 case NL80211_IFTYPE_STATION:
127 *mode = IW_MODE_INFRA;
128 break;
129 case NL80211_IFTYPE_ADHOC:
130 *mode = IW_MODE_ADHOC;
131 break;
132 case NL80211_IFTYPE_MONITOR:
133 *mode = IW_MODE_MONITOR;
134 break;
135 case NL80211_IFTYPE_WDS:
136 *mode = IW_MODE_REPEAT;
137 break;
138 case NL80211_IFTYPE_AP_VLAN:
139 *mode = IW_MODE_SECOND; /* FIXME */
140 break;
141 default:
142 *mode = IW_MODE_AUTO;
143 break;
144 }
145 return 0;
146}
ba44cb72 147EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
4aa188e1
JB		 148
149
150int cfg80211_wext_giwrange(struct net_device *dev,
151 struct iw_request_info *info,
152 struct iw_point *data, char *extra)
153{
154 struct wireless_dev *wdev = dev->ieee80211_ptr;
155 struct iw_range *range = (struct iw_range *) extra;
156 enum ieee80211_band band;
157 int c = 0;
158
159 if (!wdev)
160 return -EOPNOTSUPP;
161
162 data->length = sizeof(struct iw_range);
163 memset(range, 0, sizeof(struct iw_range));
164
165 range->we_version_compiled = WIRELESS_EXT;
166 range->we_version_source = 21;
167 range->retry_capa = IW_RETRY_LIMIT;
168 range->retry_flags = IW_RETRY_LIMIT;
169 range->min_retry = 0;
170 range->max_retry = 255;
171 range->min_rts = 0;
172 range->max_rts = 2347;
173 range->min_frag = 256;
174 range->max_frag = 2346;
175
4aa188e1
JB		 176 range->max_encoding_tokens = 4;
177
178 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
179
180 switch (wdev->wiphy->signal_type) {
181 case CFG80211_SIGNAL_TYPE_NONE:
182 break;
183 case CFG80211_SIGNAL_TYPE_MBM:
184 range->max_qual.level = -110;
185 range->max_qual.qual = 70;
186 range->avg_qual.qual = 35;
187 range->max_qual.updated |= IW_QUAL_DBM;
188 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
189 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
190 break;
191 case CFG80211_SIGNAL_TYPE_UNSPEC:
192 range->max_qual.level = 100;
193 range->max_qual.qual = 100;
194 range->avg_qual.qual = 50;
195 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
196 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
197 break;
198 }
199
200 range->avg_qual.level = range->max_qual.level / 2;
201 range->avg_qual.noise = range->max_qual.noise / 2;
202 range->avg_qual.updated = range->max_qual.updated;
203
3daf0975
DK		 204 for (c = 0; c < wdev->wiphy->n_cipher_suites; c++) {
205 switch (wdev->wiphy->cipher_suites[c]) {
206 case WLAN_CIPHER_SUITE_TKIP:
27bea66c
DK		 207 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
208 IW_ENC_CAPA_WPA);
3daf0975
DK		 209 break;
210
211 case WLAN_CIPHER_SUITE_CCMP:
27bea66c
DK		 212 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
213 IW_ENC_CAPA_WPA2);
3daf0975 214 break;
2ab658f9
DK		 215
216 case WLAN_CIPHER_SUITE_WEP40:
217 range->encoding_size[range->num_encoding_sizes++] =
218 WLAN_KEY_LEN_WEP40;
219 break;
220
221 case WLAN_CIPHER_SUITE_WEP104:
222 range->encoding_size[range->num_encoding_sizes++] =
223 WLAN_KEY_LEN_WEP104;
224 break;
3daf0975
DK		 225 }
226 }
4aa188e1 227
4aa188e1
JB		 228 for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
229 int i;
230 struct ieee80211_supported_band *sband;
231
232 sband = wdev->wiphy->bands[band];
233
234 if (!sband)
235 continue;
236
237 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
238 struct ieee80211_channel *chan = &sband->channels[i];
239
240 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
241 range->freq[c].i =
242 ieee80211_frequency_to_channel(
243 chan->center_freq);
244 range->freq[c].m = chan->center_freq;
245 range->freq[c].e = 6;
246 c++;
247 }
248 }
249 }
250 range->num_channels = c;
251 range->num_frequency = c;
252
253 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
254 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
255 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
256
51cd4aab
DK		 257 if (wdev->wiphy->max_scan_ssids > 0)
258 range->scan_capa |= IW_SCAN_CAPA_ESSID;
4aa188e1
JB		 259
260 return 0;
261}
ba44cb72 262EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
691597cb
JB		 263
264int cfg80211_wext_siwmlme(struct net_device *dev,
265 struct iw_request_info *info,
266 struct iw_point *data, char *extra)
267{
268 struct wireless_dev *wdev = dev->ieee80211_ptr;
269 struct iw_mlme *mlme = (struct iw_mlme *)extra;
270 struct cfg80211_registered_device *rdev;
271 union {
272 struct cfg80211_disassoc_request disassoc;
273 struct cfg80211_deauth_request deauth;
274 } cmd;
275
276 if (!wdev)
277 return -EOPNOTSUPP;
278
279 rdev = wiphy_to_dev(wdev->wiphy);
280
281 if (wdev->iftype != NL80211_IFTYPE_STATION)
282 return -EINVAL;
283
284 if (mlme->addr.sa_family != ARPHRD_ETHER)
285 return -EINVAL;
286
287 memset(&cmd, 0, sizeof(cmd));
288
289 switch (mlme->cmd) {
290 case IW_MLME_DEAUTH:
291 if (!rdev->ops->deauth)
292 return -EOPNOTSUPP;
293 cmd.deauth.peer_addr = mlme->addr.sa_data;
294 cmd.deauth.reason_code = mlme->reason_code;
295 return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth);
296 case IW_MLME_DISASSOC:
297 if (!rdev->ops->disassoc)
298 return -EOPNOTSUPP;
299 cmd.disassoc.peer_addr = mlme->addr.sa_data;
300 cmd.disassoc.reason_code = mlme->reason_code;
301 return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc);
302 default:
303 return -EOPNOTSUPP;
304 }
305}
ba44cb72 306EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
04a773ad
JB		 307
308
309/**
310 * cfg80211_wext_freq - get wext frequency for non-"auto"
311 * @wiphy: the wiphy
312 * @freq: the wext freq encoding
313 *
314 * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
315 */
316struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
317 struct iw_freq *freq)
318{
0b258582
JB		 319 struct ieee80211_channel *chan;
320 int f;
321
322 /*
323 * Parse frequency - return NULL for auto and
324 * -EINVAL for impossible things.
325 */
04a773ad
JB		 326 if (freq->e == 0) {
327 if (freq->m < 0)
328 return NULL;
0b258582 329 f = ieee80211_channel_to_frequency(freq->m);
04a773ad
JB		 330 } else {
331 int i, div = 1000000;
332 for (i = 0; i < freq->e; i++)
333 div /= 10;
0b258582 334 if (div <= 0)
04a773ad 335 return ERR_PTR(-EINVAL);
0b258582 336 f = freq->m / div;
04a773ad
JB		 337 }
338
0b258582
JB		 339 /*
340 * Look up channel struct and return -EINVAL when
341 * it cannot be found.
342 */
343 chan = ieee80211_get_channel(wiphy, f);
344 if (!chan)
345 return ERR_PTR(-EINVAL);
346 return chan;
04a773ad 347}
ba44cb72 348EXPORT_SYMBOL_GPL(cfg80211_wext_freq);
b9a5f8ca
JM		 349
350int cfg80211_wext_siwrts(struct net_device *dev,
351 struct iw_request_info *info,
352 struct iw_param *rts, char *extra)
353{
354 struct wireless_dev *wdev = dev->ieee80211_ptr;
355 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
356 u32 orts = wdev->wiphy->rts_threshold;
357 int err;
358
359 if (rts->disabled || !rts->fixed)
360 wdev->wiphy->rts_threshold = (u32) -1;
361 else if (rts->value < 0)
362 return -EINVAL;
363 else
364 wdev->wiphy->rts_threshold = rts->value;
365
366 err = rdev->ops->set_wiphy_params(wdev->wiphy,
367 WIPHY_PARAM_RTS_THRESHOLD);
368 if (err)
369 wdev->wiphy->rts_threshold = orts;
370
371 return err;
372}
ba44cb72 373EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
b9a5f8ca
JM		 374
375int cfg80211_wext_giwrts(struct net_device *dev,
376 struct iw_request_info *info,
377 struct iw_param *rts, char *extra)
378{
379 struct wireless_dev *wdev = dev->ieee80211_ptr;
380
381 rts->value = wdev->wiphy->rts_threshold;
382 rts->disabled = rts->value == (u32) -1;
383 rts->fixed = 1;
384
385 return 0;
386}
ba44cb72 387EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
b9a5f8ca
JM		 388
389int cfg80211_wext_siwfrag(struct net_device *dev,
390 struct iw_request_info *info,
391 struct iw_param *frag, char *extra)
392{
393 struct wireless_dev *wdev = dev->ieee80211_ptr;
394 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
395 u32 ofrag = wdev->wiphy->frag_threshold;
396 int err;
397
398 if (frag->disabled || !frag->fixed)
399 wdev->wiphy->frag_threshold = (u32) -1;
400 else if (frag->value < 256)
401 return -EINVAL;
402 else {
403 /* Fragment length must be even, so strip LSB. */
404 wdev->wiphy->frag_threshold = frag->value & ~0x1;
405 }
406
407 err = rdev->ops->set_wiphy_params(wdev->wiphy,
408 WIPHY_PARAM_FRAG_THRESHOLD);
409 if (err)
410 wdev->wiphy->frag_threshold = ofrag;
411
412 return err;
413}
ba44cb72 414EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
b9a5f8ca
JM		 415
416int cfg80211_wext_giwfrag(struct net_device *dev,
417 struct iw_request_info *info,
418 struct iw_param *frag, char *extra)
419{
420 struct wireless_dev *wdev = dev->ieee80211_ptr;
421
422 frag->value = wdev->wiphy->frag_threshold;
423 frag->disabled = frag->value == (u32) -1;
424 frag->fixed = 1;
425
426 return 0;
427}
ba44cb72 428EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
b9a5f8ca
JM		 429
430int cfg80211_wext_siwretry(struct net_device *dev,
431 struct iw_request_info *info,
432 struct iw_param *retry, char *extra)
433{
434 struct wireless_dev *wdev = dev->ieee80211_ptr;
435 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
436 u32 changed = 0;
437 u8 olong = wdev->wiphy->retry_long;
438 u8 oshort = wdev->wiphy->retry_short;
439 int err;
440
441 if (retry->disabled ||
442 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
443 return -EINVAL;
444
445 if (retry->flags & IW_RETRY_LONG) {
446 wdev->wiphy->retry_long = retry->value;
447 changed |= WIPHY_PARAM_RETRY_LONG;
448 } else if (retry->flags & IW_RETRY_SHORT) {
449 wdev->wiphy->retry_short = retry->value;
450 changed |= WIPHY_PARAM_RETRY_SHORT;
451 } else {
452 wdev->wiphy->retry_short = retry->value;
453 wdev->wiphy->retry_long = retry->value;
454 changed |= WIPHY_PARAM_RETRY_LONG;
455 changed |= WIPHY_PARAM_RETRY_SHORT;
456 }
457
458 if (!changed)
459 return 0;
460
461 err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
462 if (err) {
463 wdev->wiphy->retry_short = oshort;
464 wdev->wiphy->retry_long = olong;
465 }
466
467 return err;
468}
ba44cb72 469EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
b9a5f8ca
JM		 470
471int cfg80211_wext_giwretry(struct net_device *dev,
472 struct iw_request_info *info,
473 struct iw_param *retry, char *extra)
474{
475 struct wireless_dev *wdev = dev->ieee80211_ptr;
476
477 retry->disabled = 0;
478
479 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
480 /*
481 * First return short value, iwconfig will ask long value
482 * later if needed
483 */
484 retry->flags |= IW_RETRY_LIMIT;
485 retry->value = wdev->wiphy->retry_short;
486 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
487 retry->flags |= IW_RETRY_LONG;
488
489 return 0;
490 }
491
492 if (retry->flags & IW_RETRY_LONG) {
493 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
494 retry->value = wdev->wiphy->retry_long;
495 }
496
497 return 0;
498}
ba44cb72 499EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
08645126
JB		 500
501static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
502 struct net_device *dev, const u8 *addr,
503 bool remove, bool tx_key, int idx,
504 struct key_params *params)
505{
506 struct wireless_dev *wdev = dev->ieee80211_ptr;
507 int err;
508
509 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
510 if (!rdev->ops->set_default_mgmt_key)
511 return -EOPNOTSUPP;
512
513 if (idx < 4 || idx > 5)
514 return -EINVAL;
515 } else if (idx < 0 || idx > 3)
516 return -EINVAL;
517
518 if (remove) {
519 err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
520 if (!err) {
521 if (idx == wdev->wext.default_key)
522 wdev->wext.default_key = -1;
523 else if (idx == wdev->wext.default_mgmt_key)
524 wdev->wext.default_mgmt_key = -1;
525 }
e3da574a
JB		 526 /*
527 * Applications using wireless extensions expect to be
528 * able to delete keys that don't exist, so allow that.
529 */
530 if (err == -ENOENT)
531 return 0;
532
08645126
JB		 533 return err;
534 } else {
535 if (addr)
536 tx_key = false;
537
538 if (cfg80211_validate_key_settings(params, idx, addr))
539 return -EINVAL;
540
541 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
542 if (err)
543 return err;
544
545 if (tx_key || (!addr && wdev->wext.default_key == -1)) {
546 err = rdev->ops->set_default_key(&rdev->wiphy,
547 dev, idx);
548 if (!err)
549 wdev->wext.default_key = idx;
550 return err;
551 }
552
553 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
554 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
555 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
556 dev, idx);
557 if (!err)
558 wdev->wext.default_mgmt_key = idx;
559 return err;
560 }
561
562 return 0;
563 }
564}
565
566int cfg80211_wext_siwencode(struct net_device *dev,
567 struct iw_request_info *info,
568 struct iw_point *erq, char *keybuf)
569{
570 struct wireless_dev *wdev = dev->ieee80211_ptr;
571 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
572 int idx, err;
573 bool remove = false;
574 struct key_params params;
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 idx = erq->flags & IW_ENCODE_INDEX;
583 if (idx == 0) {
584 idx = wdev->wext.default_key;
585 if (idx < 0)
586 idx = 0;
587 } else if (idx < 1 || idx > 4)
588 return -EINVAL;
589 else
590 idx--;
591
592 if (erq->flags & IW_ENCODE_DISABLED)
593 remove = true;
594 else if (erq->length == 0) {
595 /* No key data - just set the default TX key index */
596 err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
597 if (!err)
598 wdev->wext.default_key = idx;
599 return err;
600 }
601
602 memset(&params, 0, sizeof(params));
603 params.key = keybuf;
604 params.key_len = erq->length;
605 if (erq->length == 5)
606 params.cipher = WLAN_CIPHER_SUITE_WEP40;
607 else if (erq->length == 13)
608 params.cipher = WLAN_CIPHER_SUITE_WEP104;
609 else if (!remove)
610 return -EINVAL;
611
612 return cfg80211_set_encryption(rdev, dev, NULL, remove,
613 wdev->wext.default_key == -1,
614 idx, &params);
615}
616EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
617
618int cfg80211_wext_siwencodeext(struct net_device *dev,
619 struct iw_request_info *info,
620 struct iw_point *erq, char *extra)
621{
622 struct wireless_dev *wdev = dev->ieee80211_ptr;
623 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
624 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
625 const u8 *addr;
626 int idx;
627 bool remove = false;
628 struct key_params params;
629 u32 cipher;
630
631 /* no use -- only MFP (set_default_mgmt_key) is optional */
632 if (!rdev->ops->del_key ||
633 !rdev->ops->add_key ||
634 !rdev->ops->set_default_key)
635 return -EOPNOTSUPP;
636
637 switch (ext->alg) {
638 case IW_ENCODE_ALG_NONE:
639 remove = true;
640 cipher = 0;
641 break;
642 case IW_ENCODE_ALG_WEP:
643 if (ext->key_len == 5)
644 cipher = WLAN_CIPHER_SUITE_WEP40;
645 else if (ext->key_len == 13)
646 cipher = WLAN_CIPHER_SUITE_WEP104;
647 else
648 return -EINVAL;
649 break;
650 case IW_ENCODE_ALG_TKIP:
651 cipher = WLAN_CIPHER_SUITE_TKIP;
652 break;
653 case IW_ENCODE_ALG_CCMP:
654 cipher = WLAN_CIPHER_SUITE_CCMP;
655 break;
656 case IW_ENCODE_ALG_AES_CMAC:
657 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
658 break;
659 default:
660 return -EOPNOTSUPP;
661 }
662
663 if (erq->flags & IW_ENCODE_DISABLED)
664 remove = true;
665
666 idx = erq->flags & IW_ENCODE_INDEX;
667 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
668 if (idx < 4 || idx > 5) {
669 idx = wdev->wext.default_mgmt_key;
670 if (idx < 0)
671 return -EINVAL;
672 } else
673 idx--;
674 } else {
675 if (idx < 1 || idx > 4) {
676 idx = wdev->wext.default_key;
677 if (idx < 0)
678 return -EINVAL;
679 } else
680 idx--;
681 }
682
683 addr = ext->addr.sa_data;
684 if (is_broadcast_ether_addr(addr))
685 addr = NULL;
686
687 memset(&params, 0, sizeof(params));
688 params.key = ext->key;
689 params.key_len = ext->key_len;
690 params.cipher = cipher;
691
faa8fdc8
JM		 692 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
693 params.seq = ext->rx_seq;
694 params.seq_len = 6;
695 }
696
08645126
JB		 697 return cfg80211_set_encryption(
698 rdev, dev, addr, remove,
699 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
700 idx, &params);
701}
702EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
703
704struct giwencode_cookie {
705 size_t buflen;
706 char *keybuf;
707};
708
709static void giwencode_get_key_cb(void *cookie, struct key_params *params)
710{
711 struct giwencode_cookie *data = cookie;
712
713 if (!params->key) {
714 data->buflen = 0;
715 return;
716 }
717
718 data->buflen = min_t(size_t, data->buflen, params->key_len);
719 memcpy(data->keybuf, params->key, data->buflen);
720}
721
722int cfg80211_wext_giwencode(struct net_device *dev,
723 struct iw_request_info *info,
724 struct iw_point *erq, char *keybuf)
725{
726 struct wireless_dev *wdev = dev->ieee80211_ptr;
727 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
728 int idx, err;
729 struct giwencode_cookie data = {
730 .keybuf = keybuf,
731 .buflen = erq->length,
732 };
733
734 if (!rdev->ops->get_key)
735 return -EOPNOTSUPP;
736
737 idx = erq->flags & IW_ENCODE_INDEX;
738 if (idx == 0) {
739 idx = wdev->wext.default_key;
740 if (idx < 0)
741 idx = 0;
742 } else if (idx < 1 || idx > 4)
743 return -EINVAL;
744 else
745 idx--;
746
747 erq->flags = idx + 1;
748
749 err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
750 giwencode_get_key_cb);
751 if (!err) {
752 erq->length = data.buflen;
753 erq->flags |= IW_ENCODE_ENABLED;
754 return 0;
755 }
756
757 if (err == -ENOENT) {
758 erq->flags |= IW_ENCODE_DISABLED;
759 erq->length = 0;
760 return 0;
761 }
762
763 return err;
764}
765EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
7643a2c3
JB		 766
767int cfg80211_wext_siwtxpower(struct net_device *dev,
768 struct iw_request_info *info,
769 union iwreq_data *data, char *extra)
770{
771 struct wireless_dev *wdev = dev->ieee80211_ptr;
772 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
773 enum tx_power_setting type;
774 int dbm = 0;
775
776 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
777 return -EINVAL;
778 if (data->txpower.flags & IW_TXPOW_RANGE)
779 return -EINVAL;
780
781 if (!rdev->ops->set_tx_power)
782 return -EOPNOTSUPP;
783
784 /* only change when not disabling */
785 if (!data->txpower.disabled) {
1f87f7d3
JB		 786 rfkill_set_sw_state(rdev->rfkill, false);
787
7643a2c3
JB		 788 if (data->txpower.fixed) {
789 /*
790 * wext doesn't support negative values, see
791 * below where it's for automatic
792 */
793 if (data->txpower.value < 0)
794 return -EINVAL;
795 dbm = data->txpower.value;
796 type = TX_POWER_FIXED;
797 /* TODO: do regulatory check! */
798 } else {
799 /*
800 * Automatic power level setting, max being the value
801 * passed in from userland.
802 */
803 if (data->txpower.value < 0) {
804 type = TX_POWER_AUTOMATIC;
805 } else {
806 dbm = data->txpower.value;
807 type = TX_POWER_LIMITED;
808 }
809 }
810 } else {
1f87f7d3
JB		 811 rfkill_set_sw_state(rdev->rfkill, true);
812 schedule_work(&rdev->rfkill_sync);
813 return 0;
7643a2c3
JB		 814 }
815
816 return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
817}
818EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
819
820int cfg80211_wext_giwtxpower(struct net_device *dev,
821 struct iw_request_info *info,
822 union iwreq_data *data, char *extra)
823{
824 struct wireless_dev *wdev = dev->ieee80211_ptr;
825 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
826 int err, val;
827
828 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
829 return -EINVAL;
830 if (data->txpower.flags & IW_TXPOW_RANGE)
831 return -EINVAL;
832
833 if (!rdev->ops->get_tx_power)
834 return -EOPNOTSUPP;
835
836 err = rdev->ops->get_tx_power(wdev->wiphy, &val);
1f87f7d3 837 if (err)
7643a2c3
JB		 838 return err;
839
840 /* well... oh well */
841 data->txpower.fixed = 1;
1f87f7d3 842 data->txpower.disabled = rfkill_blocked(rdev->rfkill);
7643a2c3
JB		 843 data->txpower.value = val;
844 data->txpower.flags = IW_TXPOW_DBM;
845
846 return 0;
847}
848EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
Linux 6.x block layer and io_uring tree(s)