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