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5c88b8246bbb0e0902052bb78baa80fed8cf9709
[deliverable/linux.git] / net / mac80211 / wext.c
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 ieee80211_sub_if_data *sdata, 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 = sdata->local;
36 struct sta_info *sta;
37 struct ieee80211_key *key;
38 int err;
39
40 if (alg == ALG_AES_CMAC) {
41 if (idx < NUM_DEFAULT_KEYS ||
42 idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
43 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d "
44 "(BIP)\n", sdata->dev->name, idx);
45 return -EINVAL;
46 }
47 } else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
48 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
49 sdata->dev->name, idx);
50 return -EINVAL;
51 }
52
53 if (remove) {
54 rcu_read_lock();
55
56 err = 0;
57
58 if (is_broadcast_ether_addr(sta_addr)) {
59 key = sdata->keys[idx];
60 } else {
61 sta = sta_info_get(local, sta_addr);
62 if (!sta) {
63 err = -ENOENT;
64 goto out_unlock;
65 }
66 key = sta->key;
67 }
68
69 ieee80211_key_free(key);
70 } else {
71 key = ieee80211_key_alloc(alg, idx, key_len, _key);
72 if (!key)
73 return -ENOMEM;
74
75 sta = NULL;
76 err = 0;
77
78 rcu_read_lock();
79
80 if (!is_broadcast_ether_addr(sta_addr)) {
81 set_tx_key = 0;
82 /*
83 * According to the standard, the key index of a
84 * pairwise key must be zero. However, some AP are
85 * broken when it comes to WEP key indices, so we
86 * work around this.
87 */
88 if (idx != 0 && alg != ALG_WEP) {
89 ieee80211_key_free(key);
90 err = -EINVAL;
91 goto out_unlock;
92 }
93
94 sta = sta_info_get(local, sta_addr);
95 if (!sta) {
96 ieee80211_key_free(key);
97 err = -ENOENT;
98 goto out_unlock;
99 }
100 }
101
102 if (alg == ALG_WEP &&
103 key_len != LEN_WEP40 && key_len != LEN_WEP104) {
104 ieee80211_key_free(key);
105 err = -EINVAL;
106 goto out_unlock;
107 }
108
109 ieee80211_key_link(key, sdata, sta);
110
111 if (set_tx_key || (!sta && !sdata->default_key && key))
112 ieee80211_set_default_key(sdata, idx);
113 if (alg == ALG_AES_CMAC &&
114 (set_tx_key || (!sta && !sdata->default_mgmt_key && key)))
115 ieee80211_set_default_mgmt_key(sdata, idx);
116 }
117
118 out_unlock:
119 rcu_read_unlock();
120
121 return err;
122 }
123
124 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
125 struct iw_request_info *info,
126 struct iw_point *data, char *extra)
127 {
128 struct ieee80211_sub_if_data *sdata;
129
130 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
131
132 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
133 return -EOPNOTSUPP;
134
135 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
136 sdata->vif.type == NL80211_IFTYPE_ADHOC) {
137 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
138 if (ret)
139 return ret;
140 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
141 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
142 return 0;
143 }
144
145 return -EOPNOTSUPP;
146 }
147
148 static int ieee80211_ioctl_giwrange(struct net_device *dev,
149 struct iw_request_info *info,
150 struct iw_point *data, char *extra)
151 {
152 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
153 struct iw_range *range = (struct iw_range *) extra;
154 enum ieee80211_band band;
155 int c = 0;
156
157 data->length = sizeof(struct iw_range);
158 memset(range, 0, sizeof(struct iw_range));
159
160 range->we_version_compiled = WIRELESS_EXT;
161 range->we_version_source = 21;
162 range->retry_capa = IW_RETRY_LIMIT;
163 range->retry_flags = IW_RETRY_LIMIT;
164 range->min_retry = 0;
165 range->max_retry = 255;
166 range->min_rts = 0;
167 range->max_rts = 2347;
168 range->min_frag = 256;
169 range->max_frag = 2346;
170
171 range->encoding_size[0] = 5;
172 range->encoding_size[1] = 13;
173 range->num_encoding_sizes = 2;
174 range->max_encoding_tokens = NUM_DEFAULT_KEYS;
175
176 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC ||
177 local->hw.flags & IEEE80211_HW_SIGNAL_DB)
178 range->max_qual.level = local->hw.max_signal;
179 else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
180 range->max_qual.level = -110;
181 else
182 range->max_qual.level = 0;
183
184 if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
185 range->max_qual.noise = -110;
186 else
187 range->max_qual.noise = 0;
188
189 range->max_qual.qual = 100;
190 range->max_qual.updated = local->wstats_flags;
191
192 range->avg_qual.qual = 50;
193 /* not always true but better than nothing */
194 range->avg_qual.level = range->max_qual.level / 2;
195 range->avg_qual.noise = range->max_qual.noise / 2;
196 range->avg_qual.updated = local->wstats_flags;
197
198 range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
199 IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
200
201
202 for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
203 int i;
204 struct ieee80211_supported_band *sband;
205
206 sband = local->hw.wiphy->bands[band];
207
208 if (!sband)
209 continue;
210
211 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
212 struct ieee80211_channel *chan = &sband->channels[i];
213
214 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
215 range->freq[c].i =
216 ieee80211_frequency_to_channel(
217 chan->center_freq);
218 range->freq[c].m = chan->center_freq;
219 range->freq[c].e = 6;
220 c++;
221 }
222 }
223 }
224 range->num_channels = c;
225 range->num_frequency = c;
226
227 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
228 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
229 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
230
231 range->scan_capa |= IW_SCAN_CAPA_ESSID;
232
233 return 0;
234 }
235
236
237 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
238 struct iw_request_info *info,
239 struct iw_freq *freq, char *extra)
240 {
241 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
242
243 if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
244 sdata->vif.type == NL80211_IFTYPE_STATION)
245 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
246
247 /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
248 if (freq->e == 0) {
249 if (freq->m < 0) {
250 if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
251 sdata->vif.type == NL80211_IFTYPE_STATION)
252 sdata->u.sta.flags |=
253 IEEE80211_STA_AUTO_CHANNEL_SEL;
254 return 0;
255 } else
256 return ieee80211_set_freq(sdata,
257 ieee80211_channel_to_frequency(freq->m));
258 } else {
259 int i, div = 1000000;
260 for (i = 0; i < freq->e; i++)
261 div /= 10;
262 if (div > 0)
263 return ieee80211_set_freq(sdata, freq->m / div);
264 else
265 return -EINVAL;
266 }
267 }
268
269
270 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
271 struct iw_request_info *info,
272 struct iw_freq *freq, char *extra)
273 {
274 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
275
276 freq->m = local->hw.conf.channel->center_freq;
277 freq->e = 6;
278
279 return 0;
280 }
281
282
283 static int ieee80211_ioctl_siwessid(struct net_device *dev,
284 struct iw_request_info *info,
285 struct iw_point *data, char *ssid)
286 {
287 struct ieee80211_sub_if_data *sdata;
288 size_t len = data->length;
289
290 /* iwconfig uses nul termination in SSID.. */
291 if (len > 0 && ssid[len - 1] == '\0')
292 len--;
293
294 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
295 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
296 sdata->vif.type == NL80211_IFTYPE_ADHOC) {
297 int ret;
298 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
299 if (len > IEEE80211_MAX_SSID_LEN)
300 return -EINVAL;
301 memcpy(sdata->u.sta.ssid, ssid, len);
302 sdata->u.sta.ssid_len = len;
303 return 0;
304 }
305 if (data->flags)
306 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
307 else
308 sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
309 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
310 if (ret)
311 return ret;
312 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
313 return 0;
314 }
315
316 return -EOPNOTSUPP;
317 }
318
319
320 static int ieee80211_ioctl_giwessid(struct net_device *dev,
321 struct iw_request_info *info,
322 struct iw_point *data, char *ssid)
323 {
324 size_t len;
325
326 struct ieee80211_sub_if_data *sdata;
327 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
328 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
329 sdata->vif.type == NL80211_IFTYPE_ADHOC) {
330 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
331 if (res == 0) {
332 data->length = len;
333 data->flags = 1;
334 } else
335 data->flags = 0;
336 return res;
337 }
338
339 return -EOPNOTSUPP;
340 }
341
342
343 static int ieee80211_ioctl_siwap(struct net_device *dev,
344 struct iw_request_info *info,
345 struct sockaddr *ap_addr, char *extra)
346 {
347 struct ieee80211_sub_if_data *sdata;
348
349 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
350 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
351 sdata->vif.type == NL80211_IFTYPE_ADHOC) {
352 int ret;
353 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
354 memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
355 ETH_ALEN);
356 return 0;
357 }
358 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
359 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
360 IEEE80211_STA_AUTO_CHANNEL_SEL;
361 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
362 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
363 else
364 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
365 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
366 if (ret)
367 return ret;
368 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
369 return 0;
370 } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
371 /*
372 * If it is necessary to update the WDS peer address
373 * while the interface is running, then we need to do
374 * more work here, namely if it is running we need to
375 * add a new and remove the old STA entry, this is
376 * normally handled by _open() and _stop().
377 */
378 if (netif_running(dev))
379 return -EBUSY;
380
381 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
382 ETH_ALEN);
383
384 return 0;
385 }
386
387 return -EOPNOTSUPP;
388 }
389
390
391 static int ieee80211_ioctl_giwap(struct net_device *dev,
392 struct iw_request_info *info,
393 struct sockaddr *ap_addr, char *extra)
394 {
395 struct ieee80211_sub_if_data *sdata;
396
397 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
398 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
399 sdata->vif.type == NL80211_IFTYPE_ADHOC) {
400 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
401 sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
402 ap_addr->sa_family = ARPHRD_ETHER;
403 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
404 return 0;
405 } else {
406 memset(&ap_addr->sa_data, 0, ETH_ALEN);
407 return 0;
408 }
409 } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
410 ap_addr->sa_family = ARPHRD_ETHER;
411 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
412 return 0;
413 }
414
415 return -EOPNOTSUPP;
416 }
417
418
419 static int ieee80211_ioctl_siwscan(struct net_device *dev,
420 struct iw_request_info *info,
421 union iwreq_data *wrqu, char *extra)
422 {
423 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
424 struct iw_scan_req *req = NULL;
425 u8 *ssid = NULL;
426 size_t ssid_len = 0;
427
428 if (!netif_running(dev))
429 return -ENETDOWN;
430
431 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
432 sdata->vif.type != NL80211_IFTYPE_ADHOC &&
433 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
434 return -EOPNOTSUPP;
435
436 /* if SSID was specified explicitly then use that */
437 if (wrqu->data.length == sizeof(struct iw_scan_req) &&
438 wrqu->data.flags & IW_SCAN_THIS_ESSID) {
439 req = (struct iw_scan_req *)extra;
440 ssid = req->essid;
441 ssid_len = req->essid_len;
442 }
443
444 return ieee80211_request_scan(sdata, ssid, ssid_len);
445 }
446
447
448 static int ieee80211_ioctl_giwscan(struct net_device *dev,
449 struct iw_request_info *info,
450 struct iw_point *data, char *extra)
451 {
452 int res;
453 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
454 struct ieee80211_sub_if_data *sdata;
455
456 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
457
458 if (local->sw_scanning || local->hw_scanning)
459 return -EAGAIN;
460
461 res = ieee80211_scan_results(local, info, extra, data->length);
462 if (res >= 0) {
463 data->length = res;
464 return 0;
465 }
466 data->length = 0;
467 return res;
468 }
469
470
471 static int ieee80211_ioctl_siwrate(struct net_device *dev,
472 struct iw_request_info *info,
473 struct iw_param *rate, char *extra)
474 {
475 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
476 int i, err = -EINVAL;
477 u32 target_rate = rate->value / 100000;
478 struct ieee80211_sub_if_data *sdata;
479 struct ieee80211_supported_band *sband;
480
481 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
482
483 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
484
485 /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
486 * target_rate = X, rate->fixed = 1 means only rate X
487 * target_rate = X, rate->fixed = 0 means all rates <= X */
488 sdata->max_ratectrl_rateidx = -1;
489 sdata->force_unicast_rateidx = -1;
490 if (rate->value < 0)
491 return 0;
492
493 for (i=0; i< sband->n_bitrates; i++) {
494 struct ieee80211_rate *brate = &sband->bitrates[i];
495 int this_rate = brate->bitrate;
496
497 if (target_rate == this_rate) {
498 sdata->max_ratectrl_rateidx = i;
499 if (rate->fixed)
500 sdata->force_unicast_rateidx = i;
501 err = 0;
502 break;
503 }
504 }
505 return err;
506 }
507
508 static int ieee80211_ioctl_giwrate(struct net_device *dev,
509 struct iw_request_info *info,
510 struct iw_param *rate, char *extra)
511 {
512 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
513 struct sta_info *sta;
514 struct ieee80211_sub_if_data *sdata;
515 struct ieee80211_supported_band *sband;
516
517 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
518
519 if (sdata->vif.type != NL80211_IFTYPE_STATION)
520 return -EOPNOTSUPP;
521
522 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
523
524 rcu_read_lock();
525
526 sta = sta_info_get(local, sdata->u.sta.bssid);
527
528 if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
529 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
530 else
531 rate->value = 0;
532
533 rcu_read_unlock();
534
535 if (!sta)
536 return -ENODEV;
537
538 rate->value *= 100000;
539
540 return 0;
541 }
542
543 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
544 struct iw_request_info *info,
545 union iwreq_data *data, char *extra)
546 {
547 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
548 struct ieee80211_channel* chan = local->hw.conf.channel;
549 u32 reconf_flags = 0;
550 int new_power_level;
551
552 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
553 return -EINVAL;
554 if (data->txpower.flags & IW_TXPOW_RANGE)
555 return -EINVAL;
556 if (!chan)
557 return -EINVAL;
558
559 if (data->txpower.fixed)
560 new_power_level = min(data->txpower.value, chan->max_power);
561 else /* Automatic power level setting */
562 new_power_level = chan->max_power;
563
564 local->user_power_level = new_power_level;
565 if (local->hw.conf.power_level != new_power_level)
566 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
567
568 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
569 local->hw.conf.radio_enabled = !(data->txpower.disabled);
570 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
571 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
572 }
573
574 if (reconf_flags)
575 ieee80211_hw_config(local, reconf_flags);
576
577 return 0;
578 }
579
580 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
581 struct iw_request_info *info,
582 union iwreq_data *data, char *extra)
583 {
584 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
585
586 data->txpower.fixed = 1;
587 data->txpower.disabled = !(local->hw.conf.radio_enabled);
588 data->txpower.value = local->hw.conf.power_level;
589 data->txpower.flags = IW_TXPOW_DBM;
590
591 return 0;
592 }
593
594 static int ieee80211_ioctl_siwrts(struct net_device *dev,
595 struct iw_request_info *info,
596 struct iw_param *rts, char *extra)
597 {
598 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
599
600 if (rts->disabled)
601 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
602 else if (!rts->fixed)
603 /* if the rts value is not fixed, then take default */
604 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
605 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
606 return -EINVAL;
607 else
608 local->rts_threshold = rts->value;
609
610 /* If the wlan card performs RTS/CTS in hardware/firmware,
611 * configure it here */
612
613 if (local->ops->set_rts_threshold)
614 local->ops->set_rts_threshold(local_to_hw(local),
615 local->rts_threshold);
616
617 return 0;
618 }
619
620 static int ieee80211_ioctl_giwrts(struct net_device *dev,
621 struct iw_request_info *info,
622 struct iw_param *rts, char *extra)
623 {
624 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
625
626 rts->value = local->rts_threshold;
627 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
628 rts->fixed = 1;
629
630 return 0;
631 }
632
633
634 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
635 struct iw_request_info *info,
636 struct iw_param *frag, char *extra)
637 {
638 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
639
640 if (frag->disabled)
641 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
642 else if (!frag->fixed)
643 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
644 else if (frag->value < 256 ||
645 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
646 return -EINVAL;
647 else {
648 /* Fragment length must be even, so strip LSB. */
649 local->fragmentation_threshold = frag->value & ~0x1;
650 }
651
652 return 0;
653 }
654
655 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
656 struct iw_request_info *info,
657 struct iw_param *frag, char *extra)
658 {
659 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
660
661 frag->value = local->fragmentation_threshold;
662 frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
663 frag->fixed = 1;
664
665 return 0;
666 }
667
668
669 static int ieee80211_ioctl_siwretry(struct net_device *dev,
670 struct iw_request_info *info,
671 struct iw_param *retry, char *extra)
672 {
673 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
674
675 if (retry->disabled ||
676 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
677 return -EINVAL;
678
679 if (retry->flags & IW_RETRY_MAX) {
680 local->hw.conf.long_frame_max_tx_count = retry->value;
681 } else if (retry->flags & IW_RETRY_MIN) {
682 local->hw.conf.short_frame_max_tx_count = retry->value;
683 } else {
684 local->hw.conf.long_frame_max_tx_count = retry->value;
685 local->hw.conf.short_frame_max_tx_count = retry->value;
686 }
687
688 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
689
690 return 0;
691 }
692
693
694 static int ieee80211_ioctl_giwretry(struct net_device *dev,
695 struct iw_request_info *info,
696 struct iw_param *retry, char *extra)
697 {
698 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
699
700 retry->disabled = 0;
701 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
702 /* first return min value, iwconfig will ask max value
703 * later if needed */
704 retry->flags |= IW_RETRY_LIMIT;
705 retry->value = local->hw.conf.short_frame_max_tx_count;
706 if (local->hw.conf.long_frame_max_tx_count !=
707 local->hw.conf.short_frame_max_tx_count)
708 retry->flags |= IW_RETRY_MIN;
709 return 0;
710 }
711 if (retry->flags & IW_RETRY_MAX) {
712 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
713 retry->value = local->hw.conf.long_frame_max_tx_count;
714 }
715
716 return 0;
717 }
718
719 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
720 struct iw_request_info *info,
721 struct iw_point *data, char *extra)
722 {
723 struct ieee80211_sub_if_data *sdata;
724 struct iw_mlme *mlme = (struct iw_mlme *) extra;
725
726 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
727 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
728 sdata->vif.type != NL80211_IFTYPE_ADHOC)
729 return -EINVAL;
730
731 switch (mlme->cmd) {
732 case IW_MLME_DEAUTH:
733 /* TODO: mlme->addr.sa_data */
734 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
735 case IW_MLME_DISASSOC:
736 /* TODO: mlme->addr.sa_data */
737 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
738 default:
739 return -EOPNOTSUPP;
740 }
741 }
742
743
744 static int ieee80211_ioctl_siwencode(struct net_device *dev,
745 struct iw_request_info *info,
746 struct iw_point *erq, char *keybuf)
747 {
748 struct ieee80211_sub_if_data *sdata;
749 int idx, i, alg = ALG_WEP;
750 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
751 int remove = 0;
752
753 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
754
755 idx = erq->flags & IW_ENCODE_INDEX;
756 if (idx == 0) {
757 if (sdata->default_key)
758 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
759 if (sdata->default_key == sdata->keys[i]) {
760 idx = i;
761 break;
762 }
763 }
764 } else if (idx < 1 || idx > 4)
765 return -EINVAL;
766 else
767 idx--;
768
769 if (erq->flags & IW_ENCODE_DISABLED)
770 remove = 1;
771 else if (erq->length == 0) {
772 /* No key data - just set the default TX key index */
773 ieee80211_set_default_key(sdata, idx);
774 return 0;
775 }
776
777 return ieee80211_set_encryption(
778 sdata, bcaddr,
779 idx, alg, remove,
780 !sdata->default_key,
781 keybuf, erq->length);
782 }
783
784
785 static int ieee80211_ioctl_giwencode(struct net_device *dev,
786 struct iw_request_info *info,
787 struct iw_point *erq, char *key)
788 {
789 struct ieee80211_sub_if_data *sdata;
790 int idx, i;
791
792 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
793
794 idx = erq->flags & IW_ENCODE_INDEX;
795 if (idx < 1 || idx > 4) {
796 idx = -1;
797 if (!sdata->default_key)
798 idx = 0;
799 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
800 if (sdata->default_key == sdata->keys[i]) {
801 idx = i;
802 break;
803 }
804 }
805 if (idx < 0)
806 return -EINVAL;
807 } else
808 idx--;
809
810 erq->flags = idx + 1;
811
812 if (!sdata->keys[idx]) {
813 erq->length = 0;
814 erq->flags |= IW_ENCODE_DISABLED;
815 return 0;
816 }
817
818 memcpy(key, sdata->keys[idx]->conf.key,
819 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
820 erq->length = sdata->keys[idx]->conf.keylen;
821 erq->flags |= IW_ENCODE_ENABLED;
822
823 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
824 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
825 switch (ifsta->auth_alg) {
826 case WLAN_AUTH_OPEN:
827 case WLAN_AUTH_LEAP:
828 erq->flags |= IW_ENCODE_OPEN;
829 break;
830 case WLAN_AUTH_SHARED_KEY:
831 erq->flags |= IW_ENCODE_RESTRICTED;
832 break;
833 }
834 }
835
836 return 0;
837 }
838
839 static int ieee80211_ioctl_siwpower(struct net_device *dev,
840 struct iw_request_info *info,
841 struct iw_param *wrq,
842 char *extra)
843 {
844 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
845 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
846 struct ieee80211_conf *conf = &local->hw.conf;
847 int ret = 0, timeout = 0;
848 bool ps;
849
850 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
851 return -EOPNOTSUPP;
852
853 if (sdata->vif.type != NL80211_IFTYPE_STATION)
854 return -EINVAL;
855
856 if (wrq->disabled) {
857 ps = false;
858 timeout = 0;
859 goto set;
860 }
861
862 switch (wrq->flags & IW_POWER_MODE) {
863 case IW_POWER_ON: /* If not specified */
864 case IW_POWER_MODE: /* If set all mask */
865 case IW_POWER_ALL_R: /* If explicitely state all */
866 ps = true;
867 break;
868 default: /* Otherwise we ignore */
869 return -EINVAL;
870 }
871
872 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
873 return -EINVAL;
874
875 if (wrq->flags & IW_POWER_TIMEOUT)
876 timeout = wrq->value / 1000;
877
878 set:
879 if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
880 return ret;
881
882 local->powersave = ps;
883 conf->dynamic_ps_timeout = timeout;
884
885 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
886 ret = ieee80211_hw_config(local,
887 IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
888
889 if (!(sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
890 return ret;
891
892 if (conf->dynamic_ps_timeout > 0 &&
893 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
894 mod_timer(&local->dynamic_ps_timer, jiffies +
895 msecs_to_jiffies(conf->dynamic_ps_timeout));
896 } else {
897 if (local->powersave) {
898 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
899 ieee80211_send_nullfunc(local, sdata, 1);
900 conf->flags |= IEEE80211_CONF_PS;
901 ret = ieee80211_hw_config(local,
902 IEEE80211_CONF_CHANGE_PS);
903 } else {
904 conf->flags &= ~IEEE80211_CONF_PS;
905 ret = ieee80211_hw_config(local,
906 IEEE80211_CONF_CHANGE_PS);
907 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
908 ieee80211_send_nullfunc(local, sdata, 0);
909 del_timer_sync(&local->dynamic_ps_timer);
910 cancel_work_sync(&local->dynamic_ps_enable_work);
911 }
912 }
913
914 return ret;
915 }
916
917 static int ieee80211_ioctl_giwpower(struct net_device *dev,
918 struct iw_request_info *info,
919 union iwreq_data *wrqu,
920 char *extra)
921 {
922 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
923
924 wrqu->power.disabled = !local->powersave;
925
926 return 0;
927 }
928
929 static int ieee80211_ioctl_siwauth(struct net_device *dev,
930 struct iw_request_info *info,
931 struct iw_param *data, char *extra)
932 {
933 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
934 int ret = 0;
935
936 switch (data->flags & IW_AUTH_INDEX) {
937 case IW_AUTH_WPA_VERSION:
938 case IW_AUTH_CIPHER_GROUP:
939 case IW_AUTH_WPA_ENABLED:
940 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
941 case IW_AUTH_KEY_MGMT:
942 case IW_AUTH_CIPHER_GROUP_MGMT:
943 break;
944 case IW_AUTH_CIPHER_PAIRWISE:
945 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
946 if (data->value & (IW_AUTH_CIPHER_WEP40 |
947 IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
948 sdata->u.sta.flags |=
949 IEEE80211_STA_TKIP_WEP_USED;
950 else
951 sdata->u.sta.flags &=
952 ~IEEE80211_STA_TKIP_WEP_USED;
953 }
954 break;
955 case IW_AUTH_DROP_UNENCRYPTED:
956 sdata->drop_unencrypted = !!data->value;
957 break;
958 case IW_AUTH_PRIVACY_INVOKED:
959 if (sdata->vif.type != NL80211_IFTYPE_STATION)
960 ret = -EINVAL;
961 else {
962 sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
963 /*
964 * Privacy invoked by wpa_supplicant, store the
965 * value and allow associating to a protected
966 * network without having a key up front.
967 */
968 if (data->value)
969 sdata->u.sta.flags |=
970 IEEE80211_STA_PRIVACY_INVOKED;
971 }
972 break;
973 case IW_AUTH_80211_AUTH_ALG:
974 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
975 sdata->vif.type == NL80211_IFTYPE_ADHOC)
976 sdata->u.sta.auth_algs = data->value;
977 else
978 ret = -EOPNOTSUPP;
979 break;
980 case IW_AUTH_MFP:
981 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
982 ret = -EOPNOTSUPP;
983 break;
984 }
985 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
986 sdata->vif.type == NL80211_IFTYPE_ADHOC)
987 sdata->u.sta.mfp = data->value;
988 else
989 ret = -EOPNOTSUPP;
990 break;
991 default:
992 ret = -EOPNOTSUPP;
993 break;
994 }
995 return ret;
996 }
997
998 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
999 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
1000 {
1001 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1002 struct iw_statistics *wstats = &local->wstats;
1003 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1004 struct sta_info *sta = NULL;
1005
1006 rcu_read_lock();
1007
1008 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1009 sdata->vif.type == NL80211_IFTYPE_ADHOC)
1010 sta = sta_info_get(local, sdata->u.sta.bssid);
1011 if (!sta) {
1012 wstats->discard.fragment = 0;
1013 wstats->discard.misc = 0;
1014 wstats->qual.qual = 0;
1015 wstats->qual.level = 0;
1016 wstats->qual.noise = 0;
1017 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1018 } else {
1019 wstats->qual.level = sta->last_signal;
1020 wstats->qual.qual = sta->last_qual;
1021 wstats->qual.noise = sta->last_noise;
1022 wstats->qual.updated = local->wstats_flags;
1023 }
1024
1025 rcu_read_unlock();
1026
1027 return wstats;
1028 }
1029
1030 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1031 struct iw_request_info *info,
1032 struct iw_param *data, char *extra)
1033 {
1034 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1035 int ret = 0;
1036
1037 switch (data->flags & IW_AUTH_INDEX) {
1038 case IW_AUTH_80211_AUTH_ALG:
1039 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1040 sdata->vif.type == NL80211_IFTYPE_ADHOC)
1041 data->value = sdata->u.sta.auth_algs;
1042 else
1043 ret = -EOPNOTSUPP;
1044 break;
1045 default:
1046 ret = -EOPNOTSUPP;
1047 break;
1048 }
1049 return ret;
1050 }
1051
1052
1053 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1054 struct iw_request_info *info,
1055 struct iw_point *erq, char *extra)
1056 {
1057 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1058 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1059 int uninitialized_var(alg), idx, i, remove = 0;
1060
1061 switch (ext->alg) {
1062 case IW_ENCODE_ALG_NONE:
1063 remove = 1;
1064 break;
1065 case IW_ENCODE_ALG_WEP:
1066 alg = ALG_WEP;
1067 break;
1068 case IW_ENCODE_ALG_TKIP:
1069 alg = ALG_TKIP;
1070 break;
1071 case IW_ENCODE_ALG_CCMP:
1072 alg = ALG_CCMP;
1073 break;
1074 case IW_ENCODE_ALG_AES_CMAC:
1075 alg = ALG_AES_CMAC;
1076 break;
1077 default:
1078 return -EOPNOTSUPP;
1079 }
1080
1081 if (erq->flags & IW_ENCODE_DISABLED)
1082 remove = 1;
1083
1084 idx = erq->flags & IW_ENCODE_INDEX;
1085 if (alg == ALG_AES_CMAC) {
1086 if (idx < NUM_DEFAULT_KEYS + 1 ||
1087 idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
1088 idx = -1;
1089 if (!sdata->default_mgmt_key)
1090 idx = 0;
1091 else for (i = NUM_DEFAULT_KEYS;
1092 i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
1093 i++) {
1094 if (sdata->default_mgmt_key == sdata->keys[i])
1095 {
1096 idx = i;
1097 break;
1098 }
1099 }
1100 if (idx < 0)
1101 return -EINVAL;
1102 } else
1103 idx--;
1104 } else {
1105 if (idx < 1 || idx > 4) {
1106 idx = -1;
1107 if (!sdata->default_key)
1108 idx = 0;
1109 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1110 if (sdata->default_key == sdata->keys[i]) {
1111 idx = i;
1112 break;
1113 }
1114 }
1115 if (idx < 0)
1116 return -EINVAL;
1117 } else
1118 idx--;
1119 }
1120
1121 return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1122 remove,
1123 ext->ext_flags &
1124 IW_ENCODE_EXT_SET_TX_KEY,
1125 ext->key, ext->key_len);
1126 }
1127
1128
1129 /* Structures to export the Wireless Handlers */
1130
1131 static const iw_handler ieee80211_handler[] =
1132 {
1133 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1134 (iw_handler) cfg80211_wext_giwname, /* SIOCGIWNAME */
1135 (iw_handler) NULL, /* SIOCSIWNWID */
1136 (iw_handler) NULL, /* SIOCGIWNWID */
1137 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1138 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1139 (iw_handler) cfg80211_wext_siwmode, /* SIOCSIWMODE */
1140 (iw_handler) cfg80211_wext_giwmode, /* SIOCGIWMODE */
1141 (iw_handler) NULL, /* SIOCSIWSENS */
1142 (iw_handler) NULL, /* SIOCGIWSENS */
1143 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1144 (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
1145 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1146 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1147 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1148 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1149 (iw_handler) NULL, /* SIOCSIWSPY */
1150 (iw_handler) NULL, /* SIOCGIWSPY */
1151 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1152 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1153 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1154 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1155 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1156 (iw_handler) NULL, /* SIOCGIWAPLIST */
1157 (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
1158 (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
1159 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1160 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1161 (iw_handler) NULL, /* SIOCSIWNICKN */
1162 (iw_handler) NULL, /* SIOCGIWNICKN */
1163 (iw_handler) NULL, /* -- hole -- */
1164 (iw_handler) NULL, /* -- hole -- */
1165 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1166 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1167 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1168 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1169 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1170 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1171 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1172 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1173 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1174 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1175 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1176 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1177 (iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */
1178 (iw_handler) ieee80211_ioctl_giwpower, /* SIOCGIWPOWER */
1179 (iw_handler) NULL, /* -- hole -- */
1180 (iw_handler) NULL, /* -- hole -- */
1181 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1182 (iw_handler) NULL, /* SIOCGIWGENIE */
1183 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1184 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1185 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1186 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1187 (iw_handler) NULL, /* SIOCSIWPMKSA */
1188 (iw_handler) NULL, /* -- hole -- */
1189 };
1190
1191 const struct iw_handler_def ieee80211_iw_handler_def =
1192 {
1193 .num_standard = ARRAY_SIZE(ieee80211_handler),
1194 .standard = (iw_handler *) ieee80211_handler,
1195 .get_wireless_stats = ieee80211_get_wireless_stats,
1196 };
Linux kernel - Deliverables
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