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mac80211: Checking IBSS support while changing channel in ad-hoc mode
[linux-2.6.git] / net / mac80211 / wext.c
bloba8bb8e31b1ec790c2e1e4e160ca81f8be1719d5c
1 /*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/netdevice.h>
13 #include <linux/types.h>
14 #include <linux/slab.h>
15 #include <linux/skbuff.h>
16 #include <linux/etherdevice.h>
17 #include <linux/if_arp.h>
18 #include <linux/wireless.h>
19 #include <net/iw_handler.h>
20 #include <asm/uaccess.h>
21
22 #include <net/mac80211.h>
23 #include "ieee80211_i.h"
24 #include "led.h"
25 #include "rate.h"
26 #include "wpa.h"
27 #include "aes_ccm.h"
28
29
30 static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
31 int idx, int alg, int remove,
32 int set_tx_key, const u8 *_key,
33 size_t key_len)
34 {
35 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
36 struct sta_info *sta;
37 struct ieee80211_key *key;
38 struct ieee80211_sub_if_data *sdata;
39 int err;
40
41 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
42
43 if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
44 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
45 dev->name, idx);
46 return -EINVAL;
47 }
48
49 if (remove) {
50 rcu_read_lock();
51
52 err = 0;
53
54 if (is_broadcast_ether_addr(sta_addr)) {
55 key = sdata->keys[idx];
56 } else {
57 sta = sta_info_get(local, sta_addr);
58 if (!sta) {
59 err = -ENOENT;
60 goto out_unlock;
61 }
62 key = sta->key;
63 }
64
65 ieee80211_key_free(key);
66 } else {
67 key = ieee80211_key_alloc(alg, idx, key_len, _key);
68 if (!key)
69 return -ENOMEM;
70
71 sta = NULL;
72 err = 0;
73
74 rcu_read_lock();
75
76 if (!is_broadcast_ether_addr(sta_addr)) {
77 set_tx_key = 0;
78 /*
79 * According to the standard, the key index of a
80 * pairwise key must be zero. However, some AP are
81 * broken when it comes to WEP key indices, so we
82 * work around this.
83 */
84 if (idx != 0 && alg != ALG_WEP) {
85 ieee80211_key_free(key);
86 err = -EINVAL;
87 goto out_unlock;
88 }
89
90 sta = sta_info_get(local, sta_addr);
91 if (!sta) {
92 ieee80211_key_free(key);
93 err = -ENOENT;
94 goto out_unlock;
95 }
96 }
97
98 ieee80211_key_link(key, sdata, sta);
99
100 if (set_tx_key || (!sta && !sdata->default_key && key))
101 ieee80211_set_default_key(sdata, idx);
102 }
103
104 out_unlock:
105 rcu_read_unlock();
106
107 return err;
108 }
109
110 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
111 struct iw_request_info *info,
112 struct iw_point *data, char *extra)
113 {
114 struct ieee80211_sub_if_data *sdata;
115
116 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
117
118 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
119 return -EOPNOTSUPP;
120
121 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
122 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
123 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
124 if (ret)
125 return ret;
126 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
127 ieee80211_sta_req_auth(dev, &sdata->u.sta);
128 return 0;
129 }
130
131 return -EOPNOTSUPP;
132 }
133
134 static int ieee80211_ioctl_giwname(struct net_device *dev,
135 struct iw_request_info *info,
136 char *name, char *extra)
137 {
138 strcpy(name, "IEEE 802.11");
139
140 return 0;
141 }
142
143
144 static int ieee80211_ioctl_giwrange(struct net_device *dev,
145 struct iw_request_info *info,
146 struct iw_point *data, char *extra)
147 {
148 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
149 struct iw_range *range = (struct iw_range *) extra;
150 enum ieee80211_band band;
151 int c = 0;
152
153 data->length = sizeof(struct iw_range);
154 memset(range, 0, sizeof(struct iw_range));
155
156 range->we_version_compiled = WIRELESS_EXT;
157 range->we_version_source = 21;
158 range->retry_capa = IW_RETRY_LIMIT;
159 range->retry_flags = IW_RETRY_LIMIT;
160 range->min_retry = 0;
161 range->max_retry = 255;
162 range->min_rts = 0;
163 range->max_rts = 2347;
164 range->min_frag = 256;
165 range->max_frag = 2346;
166
167 range->encoding_size[0] = 5;
168 range->encoding_size[1] = 13;
169 range->num_encoding_sizes = 2;
170 range->max_encoding_tokens = NUM_DEFAULT_KEYS;
171
172 range->max_qual.qual = local->hw.max_signal;
173 range->max_qual.level = local->hw.max_rssi;
174 range->max_qual.noise = local->hw.max_noise;
175 range->max_qual.updated = local->wstats_flags;
176
177 range->avg_qual.qual = local->hw.max_signal/2;
178 range->avg_qual.level = 0;
179 range->avg_qual.noise = 0;
180 range->avg_qual.updated = local->wstats_flags;
181
182 range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
183 IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
184
185
186 for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
187 int i;
188 struct ieee80211_supported_band *sband;
189
190 sband = local->hw.wiphy->bands[band];
191
192 if (!sband)
193 continue;
194
195 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
196 struct ieee80211_channel *chan = &sband->channels[i];
197
198 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
199 range->freq[c].i =
200 ieee80211_frequency_to_channel(
201 chan->center_freq);
202 range->freq[c].m = chan->center_freq;
203 range->freq[c].e = 6;
204 c++;
205 }
206 }
207 }
208 range->num_channels = c;
209 range->num_frequency = c;
210
211 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
212 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
213 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
214
215 range->scan_capa |= IW_SCAN_CAPA_ESSID;
216
217 return 0;
218 }
219
220
221 static int ieee80211_ioctl_siwmode(struct net_device *dev,
222 struct iw_request_info *info,
223 __u32 *mode, char *extra)
224 {
225 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
226 int type;
227
228 if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
229 return -EOPNOTSUPP;
230
231 switch (*mode) {
232 case IW_MODE_INFRA:
233 type = IEEE80211_IF_TYPE_STA;
234 break;
235 case IW_MODE_ADHOC:
236 type = IEEE80211_IF_TYPE_IBSS;
237 break;
238 case IW_MODE_REPEAT:
239 type = IEEE80211_IF_TYPE_WDS;
240 break;
241 case IW_MODE_MONITOR:
242 type = IEEE80211_IF_TYPE_MNTR;
243 break;
244 default:
245 return -EINVAL;
246 }
247
248 if (type == sdata->vif.type)
249 return 0;
250 if (netif_running(dev))
251 return -EBUSY;
252
253 ieee80211_if_reinit(dev);
254 ieee80211_if_set_type(dev, type);
255
256 return 0;
257 }
258
259
260 static int ieee80211_ioctl_giwmode(struct net_device *dev,
261 struct iw_request_info *info,
262 __u32 *mode, char *extra)
263 {
264 struct ieee80211_sub_if_data *sdata;
265
266 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
267 switch (sdata->vif.type) {
268 case IEEE80211_IF_TYPE_AP:
269 *mode = IW_MODE_MASTER;
270 break;
271 case IEEE80211_IF_TYPE_STA:
272 *mode = IW_MODE_INFRA;
273 break;
274 case IEEE80211_IF_TYPE_IBSS:
275 *mode = IW_MODE_ADHOC;
276 break;
277 case IEEE80211_IF_TYPE_MNTR:
278 *mode = IW_MODE_MONITOR;
279 break;
280 case IEEE80211_IF_TYPE_WDS:
281 *mode = IW_MODE_REPEAT;
282 break;
283 case IEEE80211_IF_TYPE_VLAN:
284 *mode = IW_MODE_SECOND; /* FIXME */
285 break;
286 default:
287 *mode = IW_MODE_AUTO;
288 break;
289 }
290 return 0;
291 }
292
293 int ieee80211_set_freq(struct net_device *dev, int freqMHz)
294 {
295 int ret = -EINVAL;
296 struct ieee80211_channel *chan;
297 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
298 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
299
300 chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
301
302 if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
303 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
304 chan->flags & IEEE80211_CHAN_NO_IBSS) {
305 printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
306 "%d MHz\n", dev->name, chan->center_freq);
307 return ret;
308 }
309 local->oper_channel = chan;
310
311 if (local->sta_sw_scanning || local->sta_hw_scanning)
312 ret = 0;
313 else
314 ret = ieee80211_hw_config(local);
315
316 rate_control_clear(local);
317 }
318
319 return ret;
320 }
321
322 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
323 struct iw_request_info *info,
324 struct iw_freq *freq, char *extra)
325 {
326 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
327
328 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
329 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
330
331 /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
332 if (freq->e == 0) {
333 if (freq->m < 0) {
334 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
335 sdata->u.sta.flags |=
336 IEEE80211_STA_AUTO_CHANNEL_SEL;
337 return 0;
338 } else
339 return ieee80211_set_freq(dev,
340 ieee80211_channel_to_frequency(freq->m));
341 } else {
342 int i, div = 1000000;
343 for (i = 0; i < freq->e; i++)
344 div /= 10;
345 if (div > 0)
346 return ieee80211_set_freq(dev, freq->m / div);
347 else
348 return -EINVAL;
349 }
350 }
351
352
353 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
354 struct iw_request_info *info,
355 struct iw_freq *freq, char *extra)
356 {
357 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
358
359 freq->m = local->hw.conf.channel->center_freq;
360 freq->e = 6;
361
362 return 0;
363 }
364
365
366 static int ieee80211_ioctl_siwessid(struct net_device *dev,
367 struct iw_request_info *info,
368 struct iw_point *data, char *ssid)
369 {
370 struct ieee80211_sub_if_data *sdata;
371 size_t len = data->length;
372
373 /* iwconfig uses nul termination in SSID.. */
374 if (len > 0 && ssid[len - 1] == '\0')
375 len--;
376
377 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
378 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
379 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
380 int ret;
381 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
382 if (len > IEEE80211_MAX_SSID_LEN)
383 return -EINVAL;
384 memcpy(sdata->u.sta.ssid, ssid, len);
385 sdata->u.sta.ssid_len = len;
386 return 0;
387 }
388 if (data->flags)
389 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
390 else
391 sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
392 ret = ieee80211_sta_set_ssid(dev, ssid, len);
393 if (ret)
394 return ret;
395 ieee80211_sta_req_auth(dev, &sdata->u.sta);
396 return 0;
397 }
398
399 if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
400 memcpy(sdata->u.ap.ssid, ssid, len);
401 memset(sdata->u.ap.ssid + len, 0,
402 IEEE80211_MAX_SSID_LEN - len);
403 sdata->u.ap.ssid_len = len;
404 return ieee80211_if_config(dev);
405 }
406 return -EOPNOTSUPP;
407 }
408
409
410 static int ieee80211_ioctl_giwessid(struct net_device *dev,
411 struct iw_request_info *info,
412 struct iw_point *data, char *ssid)
413 {
414 size_t len;
415
416 struct ieee80211_sub_if_data *sdata;
417 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
418 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
419 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
420 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
421 if (res == 0) {
422 data->length = len;
423 data->flags = 1;
424 } else
425 data->flags = 0;
426 return res;
427 }
428
429 if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
430 len = sdata->u.ap.ssid_len;
431 if (len > IW_ESSID_MAX_SIZE)
432 len = IW_ESSID_MAX_SIZE;
433 memcpy(ssid, sdata->u.ap.ssid, len);
434 data->length = len;
435 data->flags = 1;
436 return 0;
437 }
438 return -EOPNOTSUPP;
439 }
440
441
442 static int ieee80211_ioctl_siwap(struct net_device *dev,
443 struct iw_request_info *info,
444 struct sockaddr *ap_addr, char *extra)
445 {
446 struct ieee80211_sub_if_data *sdata;
447
448 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
449 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
450 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
451 int ret;
452 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
453 memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
454 ETH_ALEN);
455 return 0;
456 }
457 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
458 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
459 IEEE80211_STA_AUTO_CHANNEL_SEL;
460 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
461 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
462 else
463 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
464 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
465 if (ret)
466 return ret;
467 ieee80211_sta_req_auth(dev, &sdata->u.sta);
468 return 0;
469 } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
470 /*
471 * If it is necessary to update the WDS peer address
472 * while the interface is running, then we need to do
473 * more work here, namely if it is running we need to
474 * add a new and remove the old STA entry, this is
475 * normally handled by _open() and _stop().
476 */
477 if (netif_running(dev))
478 return -EBUSY;
479
480 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
481 ETH_ALEN);
482
483 return 0;
484 }
485
486 return -EOPNOTSUPP;
487 }
488
489
490 static int ieee80211_ioctl_giwap(struct net_device *dev,
491 struct iw_request_info *info,
492 struct sockaddr *ap_addr, char *extra)
493 {
494 struct ieee80211_sub_if_data *sdata;
495
496 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
497 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
498 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
499 if (sdata->u.sta.state == IEEE80211_ASSOCIATED) {
500 ap_addr->sa_family = ARPHRD_ETHER;
501 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
502 return 0;
503 } else {
504 memset(&ap_addr->sa_data, 0, ETH_ALEN);
505 return 0;
506 }
507 } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
508 ap_addr->sa_family = ARPHRD_ETHER;
509 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
510 return 0;
511 }
512
513 return -EOPNOTSUPP;
514 }
515
516
517 static int ieee80211_ioctl_siwscan(struct net_device *dev,
518 struct iw_request_info *info,
519 union iwreq_data *wrqu, char *extra)
520 {
521 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
522 struct iw_scan_req *req = NULL;
523 u8 *ssid = NULL;
524 size_t ssid_len = 0;
525
526 if (!netif_running(dev))
527 return -ENETDOWN;
528
529 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
530 sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
531 sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
532 sdata->vif.type != IEEE80211_IF_TYPE_AP)
533 return -EOPNOTSUPP;
534
535 /* if SSID was specified explicitly then use that */
536 if (wrqu->data.length == sizeof(struct iw_scan_req) &&
537 wrqu->data.flags & IW_SCAN_THIS_ESSID) {
538 req = (struct iw_scan_req *)extra;
539 ssid = req->essid;
540 ssid_len = req->essid_len;
541 }
542
543 return ieee80211_sta_req_scan(dev, ssid, ssid_len);
544 }
545
546
547 static int ieee80211_ioctl_giwscan(struct net_device *dev,
548 struct iw_request_info *info,
549 struct iw_point *data, char *extra)
550 {
551 int res;
552 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
553
554 if (local->sta_sw_scanning || local->sta_hw_scanning)
555 return -EAGAIN;
556
557 res = ieee80211_sta_scan_results(dev, extra, data->length);
558 if (res >= 0) {
559 data->length = res;
560 return 0;
561 }
562 data->length = 0;
563 return res;
564 }
565
566
567 static int ieee80211_ioctl_siwrate(struct net_device *dev,
568 struct iw_request_info *info,
569 struct iw_param *rate, char *extra)
570 {
571 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
572 int i, err = -EINVAL;
573 u32 target_rate = rate->value / 100000;
574 struct ieee80211_sub_if_data *sdata;
575 struct ieee80211_supported_band *sband;
576
577 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
578 if (!sdata->bss)
579 return -ENODEV;
580
581 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
582
583 /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
584 * target_rate = X, rate->fixed = 1 means only rate X
585 * target_rate = X, rate->fixed = 0 means all rates <= X */
586 sdata->bss->max_ratectrl_rateidx = -1;
587 sdata->bss->force_unicast_rateidx = -1;
588 if (rate->value < 0)
589 return 0;
590
591 for (i=0; i< sband->n_bitrates; i++) {
592 struct ieee80211_rate *brate = &sband->bitrates[i];
593 int this_rate = brate->bitrate;
594
595 if (target_rate == this_rate) {
596 sdata->bss->max_ratectrl_rateidx = i;
597 if (rate->fixed)
598 sdata->bss->force_unicast_rateidx = i;
599 err = 0;
600 break;
601 }
602 }
603 return err;
604 }
605
606 static int ieee80211_ioctl_giwrate(struct net_device *dev,
607 struct iw_request_info *info,
608 struct iw_param *rate, char *extra)
609 {
610 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
611 struct sta_info *sta;
612 struct ieee80211_sub_if_data *sdata;
613 struct ieee80211_supported_band *sband;
614
615 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
616
617 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
618 return -EOPNOTSUPP;
619
620 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
621
622 rcu_read_lock();
623
624 sta = sta_info_get(local, sdata->u.sta.bssid);
625
626 if (sta && sta->txrate_idx < sband->n_bitrates)
627 rate->value = sband->bitrates[sta->txrate_idx].bitrate;
628 else
629 rate->value = 0;
630
631 rcu_read_unlock();
632
633 if (!sta)
634 return -ENODEV;
635
636 rate->value *= 100000;
637
638 return 0;
639 }
640
641 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
642 struct iw_request_info *info,
643 union iwreq_data *data, char *extra)
644 {
645 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
646 bool need_reconfig = 0;
647 int new_power_level;
648
649 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
650 return -EINVAL;
651 if (data->txpower.flags & IW_TXPOW_RANGE)
652 return -EINVAL;
653
654 if (data->txpower.fixed) {
655 new_power_level = data->txpower.value;
656 } else {
657 /*
658 * Automatic power level. Use maximum power for the current
659 * channel. Should be part of rate control.
660 */
661 struct ieee80211_channel* chan = local->hw.conf.channel;
662 if (!chan)
663 return -EINVAL;
664
665 new_power_level = chan->max_power;
666 }
667
668 if (local->hw.conf.power_level != new_power_level) {
669 local->hw.conf.power_level = new_power_level;
670 need_reconfig = 1;
671 }
672
673 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
674 local->hw.conf.radio_enabled = !(data->txpower.disabled);
675 need_reconfig = 1;
676 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
677 }
678
679 if (need_reconfig) {
680 ieee80211_hw_config(local);
681 /* The return value of hw_config is not of big interest here,
682 * as it doesn't say that it failed because of _this_ config
683 * change or something else. Ignore it. */
684 }
685
686 return 0;
687 }
688
689 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
690 struct iw_request_info *info,
691 union iwreq_data *data, char *extra)
692 {
693 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
694
695 data->txpower.fixed = 1;
696 data->txpower.disabled = !(local->hw.conf.radio_enabled);
697 data->txpower.value = local->hw.conf.power_level;
698 data->txpower.flags = IW_TXPOW_DBM;
699
700 return 0;
701 }
702
703 static int ieee80211_ioctl_siwrts(struct net_device *dev,
704 struct iw_request_info *info,
705 struct iw_param *rts, char *extra)
706 {
707 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
708
709 if (rts->disabled)
710 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
711 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
712 return -EINVAL;
713 else
714 local->rts_threshold = rts->value;
715
716 /* If the wlan card performs RTS/CTS in hardware/firmware,
717 * configure it here */
718
719 if (local->ops->set_rts_threshold)
720 local->ops->set_rts_threshold(local_to_hw(local),
721 local->rts_threshold);
722
723 return 0;
724 }
725
726 static int ieee80211_ioctl_giwrts(struct net_device *dev,
727 struct iw_request_info *info,
728 struct iw_param *rts, char *extra)
729 {
730 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
731
732 rts->value = local->rts_threshold;
733 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
734 rts->fixed = 1;
735
736 return 0;
737 }
738
739
740 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
741 struct iw_request_info *info,
742 struct iw_param *frag, char *extra)
743 {
744 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
745
746 if (frag->disabled)
747 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
748 else if (frag->value < 256 ||
749 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
750 return -EINVAL;
751 else {
752 /* Fragment length must be even, so strip LSB. */
753 local->fragmentation_threshold = frag->value & ~0x1;
754 }
755
756 /* If the wlan card performs fragmentation in hardware/firmware,
757 * configure it here */
758
759 if (local->ops->set_frag_threshold)
760 local->ops->set_frag_threshold(
761 local_to_hw(local),
762 local->fragmentation_threshold);
763
764 return 0;
765 }
766
767 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
768 struct iw_request_info *info,
769 struct iw_param *frag, char *extra)
770 {
771 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
772
773 frag->value = local->fragmentation_threshold;
774 frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
775 frag->fixed = 1;
776
777 return 0;
778 }
779
780
781 static int ieee80211_ioctl_siwretry(struct net_device *dev,
782 struct iw_request_info *info,
783 struct iw_param *retry, char *extra)
784 {
785 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
786
787 if (retry->disabled ||
788 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
789 return -EINVAL;
790
791 if (retry->flags & IW_RETRY_MAX)
792 local->long_retry_limit = retry->value;
793 else if (retry->flags & IW_RETRY_MIN)
794 local->short_retry_limit = retry->value;
795 else {
796 local->long_retry_limit = retry->value;
797 local->short_retry_limit = retry->value;
798 }
799
800 if (local->ops->set_retry_limit) {
801 return local->ops->set_retry_limit(
802 local_to_hw(local),
803 local->short_retry_limit,
804 local->long_retry_limit);
805 }
806
807 return 0;
808 }
809
810
811 static int ieee80211_ioctl_giwretry(struct net_device *dev,
812 struct iw_request_info *info,
813 struct iw_param *retry, char *extra)
814 {
815 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
816
817 retry->disabled = 0;
818 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
819 /* first return min value, iwconfig will ask max value
820 * later if needed */
821 retry->flags |= IW_RETRY_LIMIT;
822 retry->value = local->short_retry_limit;
823 if (local->long_retry_limit != local->short_retry_limit)
824 retry->flags |= IW_RETRY_MIN;
825 return 0;
826 }
827 if (retry->flags & IW_RETRY_MAX) {
828 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
829 retry->value = local->long_retry_limit;
830 }
831
832 return 0;
833 }
834
835 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
836 struct iw_request_info *info,
837 struct iw_point *data, char *extra)
838 {
839 struct ieee80211_sub_if_data *sdata;
840 struct iw_mlme *mlme = (struct iw_mlme *) extra;
841
842 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
843 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
844 sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
845 return -EINVAL;
846
847 switch (mlme->cmd) {
848 case IW_MLME_DEAUTH:
849 /* TODO: mlme->addr.sa_data */
850 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
851 case IW_MLME_DISASSOC:
852 /* TODO: mlme->addr.sa_data */
853 return ieee80211_sta_disassociate(dev, mlme->reason_code);
854 default:
855 return -EOPNOTSUPP;
856 }
857 }
858
859
860 static int ieee80211_ioctl_siwencode(struct net_device *dev,
861 struct iw_request_info *info,
862 struct iw_point *erq, char *keybuf)
863 {
864 struct ieee80211_sub_if_data *sdata;
865 int idx, i, alg = ALG_WEP;
866 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
867 int remove = 0;
868
869 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
870
871 idx = erq->flags & IW_ENCODE_INDEX;
872 if (idx == 0) {
873 if (sdata->default_key)
874 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
875 if (sdata->default_key == sdata->keys[i]) {
876 idx = i;
877 break;
878 }
879 }
880 } else if (idx < 1 || idx > 4)
881 return -EINVAL;
882 else
883 idx--;
884
885 if (erq->flags & IW_ENCODE_DISABLED)
886 remove = 1;
887 else if (erq->length == 0) {
888 /* No key data - just set the default TX key index */
889 ieee80211_set_default_key(sdata, idx);
890 return 0;
891 }
892
893 return ieee80211_set_encryption(
894 dev, bcaddr,
895 idx, alg, remove,
896 !sdata->default_key,
897 keybuf, erq->length);
898 }
899
900
901 static int ieee80211_ioctl_giwencode(struct net_device *dev,
902 struct iw_request_info *info,
903 struct iw_point *erq, char *key)
904 {
905 struct ieee80211_sub_if_data *sdata;
906 int idx, i;
907
908 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
909
910 idx = erq->flags & IW_ENCODE_INDEX;
911 if (idx < 1 || idx > 4) {
912 idx = -1;
913 if (!sdata->default_key)
914 idx = 0;
915 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
916 if (sdata->default_key == sdata->keys[i]) {
917 idx = i;
918 break;
919 }
920 }
921 if (idx < 0)
922 return -EINVAL;
923 } else
924 idx--;
925
926 erq->flags = idx + 1;
927
928 if (!sdata->keys[idx]) {
929 erq->length = 0;
930 erq->flags |= IW_ENCODE_DISABLED;
931 return 0;
932 }
933
934 memcpy(key, sdata->keys[idx]->conf.key,
935 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
936 erq->length = sdata->keys[idx]->conf.keylen;
937 erq->flags |= IW_ENCODE_ENABLED;
938
939 return 0;
940 }
941
942 static int ieee80211_ioctl_siwauth(struct net_device *dev,
943 struct iw_request_info *info,
944 struct iw_param *data, char *extra)
945 {
946 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
947 int ret = 0;
948
949 switch (data->flags & IW_AUTH_INDEX) {
950 case IW_AUTH_WPA_VERSION:
951 case IW_AUTH_CIPHER_PAIRWISE:
952 case IW_AUTH_CIPHER_GROUP:
953 case IW_AUTH_WPA_ENABLED:
954 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
955 case IW_AUTH_KEY_MGMT:
956 break;
957 case IW_AUTH_DROP_UNENCRYPTED:
958 sdata->drop_unencrypted = !!data->value;
959 break;
960 case IW_AUTH_PRIVACY_INVOKED:
961 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
962 ret = -EINVAL;
963 else {
964 sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
965 /*
966 * Privacy invoked by wpa_supplicant, store the
967 * value and allow associating to a protected
968 * network without having a key up front.
969 */
970 if (data->value)
971 sdata->u.sta.flags |=
972 IEEE80211_STA_PRIVACY_INVOKED;
973 }
974 break;
975 case IW_AUTH_80211_AUTH_ALG:
976 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
977 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
978 sdata->u.sta.auth_algs = data->value;
979 else
980 ret = -EOPNOTSUPP;
981 break;
982 default:
983 ret = -EOPNOTSUPP;
984 break;
985 }
986 return ret;
987 }
988
989 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
990 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
991 {
992 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
993 struct iw_statistics *wstats = &local->wstats;
994 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
995 struct sta_info *sta = NULL;
996
997 rcu_read_lock();
998
999 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1000 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1001 sta = sta_info_get(local, sdata->u.sta.bssid);
1002 if (!sta) {
1003 wstats->discard.fragment = 0;
1004 wstats->discard.misc = 0;
1005 wstats->qual.qual = 0;
1006 wstats->qual.level = 0;
1007 wstats->qual.noise = 0;
1008 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1009 } else {
1010 wstats->qual.level = sta->last_rssi;
1011 wstats->qual.qual = sta->last_signal;
1012 wstats->qual.noise = sta->last_noise;
1013 wstats->qual.updated = local->wstats_flags;
1014 }
1015
1016 rcu_read_unlock();
1017
1018 return wstats;
1019 }
1020
1021 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1022 struct iw_request_info *info,
1023 struct iw_param *data, char *extra)
1024 {
1025 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026 int ret = 0;
1027
1028 switch (data->flags & IW_AUTH_INDEX) {
1029 case IW_AUTH_80211_AUTH_ALG:
1030 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1031 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1032 data->value = sdata->u.sta.auth_algs;
1033 else
1034 ret = -EOPNOTSUPP;
1035 break;
1036 default:
1037 ret = -EOPNOTSUPP;
1038 break;
1039 }
1040 return ret;
1041 }
1042
1043
1044 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1045 struct iw_request_info *info,
1046 struct iw_point *erq, char *extra)
1047 {
1048 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1050 int uninitialized_var(alg), idx, i, remove = 0;
1051
1052 switch (ext->alg) {
1053 case IW_ENCODE_ALG_NONE:
1054 remove = 1;
1055 break;
1056 case IW_ENCODE_ALG_WEP:
1057 alg = ALG_WEP;
1058 break;
1059 case IW_ENCODE_ALG_TKIP:
1060 alg = ALG_TKIP;
1061 break;
1062 case IW_ENCODE_ALG_CCMP:
1063 alg = ALG_CCMP;
1064 break;
1065 default:
1066 return -EOPNOTSUPP;
1067 }
1068
1069 if (erq->flags & IW_ENCODE_DISABLED)
1070 remove = 1;
1071
1072 idx = erq->flags & IW_ENCODE_INDEX;
1073 if (idx < 1 || idx > 4) {
1074 idx = -1;
1075 if (!sdata->default_key)
1076 idx = 0;
1077 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1078 if (sdata->default_key == sdata->keys[i]) {
1079 idx = i;
1080 break;
1081 }
1082 }
1083 if (idx < 0)
1084 return -EINVAL;
1085 } else
1086 idx--;
1087
1088 return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1089 remove,
1090 ext->ext_flags &
1091 IW_ENCODE_EXT_SET_TX_KEY,
1092 ext->key, ext->key_len);
1093 }
1094
1095
1096 /* Structures to export the Wireless Handlers */
1097
1098 static const iw_handler ieee80211_handler[] =
1099 {
1100 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1101 (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
1102 (iw_handler) NULL, /* SIOCSIWNWID */
1103 (iw_handler) NULL, /* SIOCGIWNWID */
1104 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1105 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1106 (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
1107 (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
1108 (iw_handler) NULL, /* SIOCSIWSENS */
1109 (iw_handler) NULL, /* SIOCGIWSENS */
1110 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1111 (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
1112 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1113 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1114 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1115 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1116 (iw_handler) NULL, /* SIOCSIWSPY */
1117 (iw_handler) NULL, /* SIOCGIWSPY */
1118 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1119 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1120 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1121 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1122 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1123 (iw_handler) NULL, /* SIOCGIWAPLIST */
1124 (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
1125 (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
1126 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1127 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1128 (iw_handler) NULL, /* SIOCSIWNICKN */
1129 (iw_handler) NULL, /* SIOCGIWNICKN */
1130 (iw_handler) NULL, /* -- hole -- */
1131 (iw_handler) NULL, /* -- hole -- */
1132 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1133 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1134 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1135 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1136 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1137 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1138 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1139 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1140 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1141 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1142 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1143 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1144 (iw_handler) NULL, /* SIOCSIWPOWER */
1145 (iw_handler) NULL, /* SIOCGIWPOWER */
1146 (iw_handler) NULL, /* -- hole -- */
1147 (iw_handler) NULL, /* -- hole -- */
1148 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1149 (iw_handler) NULL, /* SIOCGIWGENIE */
1150 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1151 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1152 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1153 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1154 (iw_handler) NULL, /* SIOCSIWPMKSA */
1155 (iw_handler) NULL, /* -- hole -- */
1156 };
1157
1158 const struct iw_handler_def ieee80211_iw_handler_def =
1159 {
1160 .num_standard = ARRAY_SIZE(ieee80211_handler),
1161 .standard = (iw_handler *) ieee80211_handler,
1162 .get_wireless_stats = ieee80211_get_wireless_stats,
1163 };
Linus' kernel tree