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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6/mini2440.git] / net / mac80211 / wext.c
blob959aa8379ccf957a7196283df3c3d98f6aa79bbf
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->vif.type == NL80211_IFTYPE_STATION) {
133 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
134 if (ret)
135 return ret;
136 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
137 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
138 ieee80211_sta_req_auth(sdata);
139 return 0;
140 }
141
142 return -EOPNOTSUPP;
143 }
144
145 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
146 struct iw_request_info *info,
147 struct iw_freq *freq, char *extra)
148 {
149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
150
151 if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
152 sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_CHANNEL_SEL;
153 else if (sdata->vif.type == NL80211_IFTYPE_STATION)
154 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
155
156 /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
157 if (freq->e == 0) {
158 if (freq->m < 0) {
159 if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
160 sdata->u.ibss.flags |=
161 IEEE80211_IBSS_AUTO_CHANNEL_SEL;
162 else if (sdata->vif.type == NL80211_IFTYPE_STATION)
163 sdata->u.mgd.flags |=
164 IEEE80211_STA_AUTO_CHANNEL_SEL;
165 return 0;
166 } else
167 return ieee80211_set_freq(sdata,
168 ieee80211_channel_to_frequency(freq->m));
169 } else {
170 int i, div = 1000000;
171 for (i = 0; i < freq->e; i++)
172 div /= 10;
173 if (div > 0)
174 return ieee80211_set_freq(sdata, freq->m / div);
175 else
176 return -EINVAL;
177 }
178 }
179
180
181 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
182 struct iw_request_info *info,
183 struct iw_freq *freq, char *extra)
184 {
185 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
186
187 freq->m = local->hw.conf.channel->center_freq;
188 freq->e = 6;
189
190 return 0;
191 }
192
193
194 static int ieee80211_ioctl_siwessid(struct net_device *dev,
195 struct iw_request_info *info,
196 struct iw_point *data, char *ssid)
197 {
198 struct ieee80211_sub_if_data *sdata;
199 size_t len = data->length;
200 int ret;
201
202 /* iwconfig uses nul termination in SSID.. */
203 if (len > 0 && ssid[len - 1] == '\0')
204 len--;
205
206 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
207 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
208 if (data->flags)
209 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
210 else
211 sdata->u.mgd.flags |= IEEE80211_STA_AUTO_SSID_SEL;
212
213 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
214 if (ret)
215 return ret;
216
217 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
218 ieee80211_sta_req_auth(sdata);
219 return 0;
220 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
221 return ieee80211_ibss_set_ssid(sdata, ssid, len);
222
223 return -EOPNOTSUPP;
224 }
225
226
227 static int ieee80211_ioctl_giwessid(struct net_device *dev,
228 struct iw_request_info *info,
229 struct iw_point *data, char *ssid)
230 {
231 size_t len;
232
233 struct ieee80211_sub_if_data *sdata;
234 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
235 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
236 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
237 if (res == 0) {
238 data->length = len;
239 data->flags = 1;
240 } else
241 data->flags = 0;
242 return res;
243 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
244 int res = ieee80211_ibss_get_ssid(sdata, ssid, &len);
245 if (res == 0) {
246 data->length = len;
247 data->flags = 1;
248 } else
249 data->flags = 0;
250 return res;
251 }
252
253 return -EOPNOTSUPP;
254 }
255
256
257 static int ieee80211_ioctl_siwap(struct net_device *dev,
258 struct iw_request_info *info,
259 struct sockaddr *ap_addr, char *extra)
260 {
261 struct ieee80211_sub_if_data *sdata;
262
263 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
264 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
265 int ret;
266
267 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
268 sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
269 IEEE80211_STA_AUTO_CHANNEL_SEL;
270 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
271 sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
272 else
273 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
274 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
275 if (ret)
276 return ret;
277 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
278 ieee80211_sta_req_auth(sdata);
279 return 0;
280 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
281 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
282 sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
283 IEEE80211_IBSS_AUTO_CHANNEL_SEL;
284 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
285 sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL;
286 else
287 sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_BSSID_SEL;
288
289 return ieee80211_ibss_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
290 } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
291 /*
292 * If it is necessary to update the WDS peer address
293 * while the interface is running, then we need to do
294 * more work here, namely if it is running we need to
295 * add a new and remove the old STA entry, this is
296 * normally handled by _open() and _stop().
297 */
298 if (netif_running(dev))
299 return -EBUSY;
300
301 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
302 ETH_ALEN);
303
304 return 0;
305 }
306
307 return -EOPNOTSUPP;
308 }
309
310
311 static int ieee80211_ioctl_giwap(struct net_device *dev,
312 struct iw_request_info *info,
313 struct sockaddr *ap_addr, char *extra)
314 {
315 struct ieee80211_sub_if_data *sdata;
316
317 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
318 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
319 if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
320 ap_addr->sa_family = ARPHRD_ETHER;
321 memcpy(&ap_addr->sa_data, sdata->u.mgd.bssid, ETH_ALEN);
322 } else
323 memset(&ap_addr->sa_data, 0, ETH_ALEN);
324 return 0;
325 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
326 if (sdata->u.ibss.state == IEEE80211_IBSS_MLME_JOINED) {
327 ap_addr->sa_family = ARPHRD_ETHER;
328 memcpy(&ap_addr->sa_data, sdata->u.ibss.bssid, ETH_ALEN);
329 } else
330 memset(&ap_addr->sa_data, 0, ETH_ALEN);
331 return 0;
332 } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
333 ap_addr->sa_family = ARPHRD_ETHER;
334 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
335 return 0;
336 }
337
338 return -EOPNOTSUPP;
339 }
340
341
342 static int ieee80211_ioctl_siwrate(struct net_device *dev,
343 struct iw_request_info *info,
344 struct iw_param *rate, char *extra)
345 {
346 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
347 int i, err = -EINVAL;
348 u32 target_rate = rate->value / 100000;
349 struct ieee80211_sub_if_data *sdata;
350 struct ieee80211_supported_band *sband;
351
352 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
353
354 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
355
356 /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
357 * target_rate = X, rate->fixed = 1 means only rate X
358 * target_rate = X, rate->fixed = 0 means all rates <= X */
359 sdata->max_ratectrl_rateidx = -1;
360 sdata->force_unicast_rateidx = -1;
361 if (rate->value < 0)
362 return 0;
363
364 for (i=0; i< sband->n_bitrates; i++) {
365 struct ieee80211_rate *brate = &sband->bitrates[i];
366 int this_rate = brate->bitrate;
367
368 if (target_rate == this_rate) {
369 sdata->max_ratectrl_rateidx = i;
370 if (rate->fixed)
371 sdata->force_unicast_rateidx = i;
372 err = 0;
373 break;
374 }
375 }
376 return err;
377 }
378
379 static int ieee80211_ioctl_giwrate(struct net_device *dev,
380 struct iw_request_info *info,
381 struct iw_param *rate, char *extra)
382 {
383 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
384 struct sta_info *sta;
385 struct ieee80211_sub_if_data *sdata;
386 struct ieee80211_supported_band *sband;
387
388 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
389
390 if (sdata->vif.type != NL80211_IFTYPE_STATION)
391 return -EOPNOTSUPP;
392
393 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
394
395 rcu_read_lock();
396
397 sta = sta_info_get(local, sdata->u.mgd.bssid);
398
399 if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
400 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
401 else
402 rate->value = 0;
403
404 rcu_read_unlock();
405
406 if (!sta)
407 return -ENODEV;
408
409 rate->value *= 100000;
410
411 return 0;
412 }
413
414 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
415 struct iw_request_info *info,
416 union iwreq_data *data, char *extra)
417 {
418 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
419 struct ieee80211_channel* chan = local->hw.conf.channel;
420 bool reconf = false;
421 u32 reconf_flags = 0;
422 int new_power_level;
423
424 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
425 return -EINVAL;
426 if (data->txpower.flags & IW_TXPOW_RANGE)
427 return -EINVAL;
428 if (!chan)
429 return -EINVAL;
430
431 /* only change when not disabling */
432 if (!data->txpower.disabled) {
433 if (data->txpower.fixed) {
434 if (data->txpower.value < 0)
435 return -EINVAL;
436 new_power_level = data->txpower.value;
437 /*
438 * Debatable, but we cannot do a fixed power
439 * level above the regulatory constraint.
440 * Use "iwconfig wlan0 txpower 15dBm" instead.
441 */
442 if (new_power_level > chan->max_power)
443 return -EINVAL;
444 } else {
445 /*
446 * Automatic power level setting, max being the value
447 * passed in from userland.
448 */
449 if (data->txpower.value < 0)
450 new_power_level = -1;
451 else
452 new_power_level = data->txpower.value;
453 }
454
455 reconf = true;
456
457 /*
458 * ieee80211_hw_config() will limit to the channel's
459 * max power and possibly power constraint from AP.
460 */
461 local->user_power_level = new_power_level;
462 }
463
464 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
465 local->hw.conf.radio_enabled = !(data->txpower.disabled);
466 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
467 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
468 }
469
470 if (reconf || reconf_flags)
471 ieee80211_hw_config(local, reconf_flags);
472
473 return 0;
474 }
475
476 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
477 struct iw_request_info *info,
478 union iwreq_data *data, char *extra)
479 {
480 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
481
482 data->txpower.fixed = 1;
483 data->txpower.disabled = !(local->hw.conf.radio_enabled);
484 data->txpower.value = local->hw.conf.power_level;
485 data->txpower.flags = IW_TXPOW_DBM;
486
487 return 0;
488 }
489
490 static int ieee80211_ioctl_siwrts(struct net_device *dev,
491 struct iw_request_info *info,
492 struct iw_param *rts, char *extra)
493 {
494 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
495
496 if (rts->disabled)
497 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
498 else if (!rts->fixed)
499 /* if the rts value is not fixed, then take default */
500 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
501 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
502 return -EINVAL;
503 else
504 local->rts_threshold = rts->value;
505
506 /* If the wlan card performs RTS/CTS in hardware/firmware,
507 * configure it here */
508
509 if (local->ops->set_rts_threshold)
510 local->ops->set_rts_threshold(local_to_hw(local),
511 local->rts_threshold);
512
513 return 0;
514 }
515
516 static int ieee80211_ioctl_giwrts(struct net_device *dev,
517 struct iw_request_info *info,
518 struct iw_param *rts, char *extra)
519 {
520 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
521
522 rts->value = local->rts_threshold;
523 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
524 rts->fixed = 1;
525
526 return 0;
527 }
528
529
530 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
531 struct iw_request_info *info,
532 struct iw_param *frag, char *extra)
533 {
534 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
535
536 if (frag->disabled)
537 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
538 else if (!frag->fixed)
539 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
540 else if (frag->value < 256 ||
541 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
542 return -EINVAL;
543 else {
544 /* Fragment length must be even, so strip LSB. */
545 local->fragmentation_threshold = frag->value & ~0x1;
546 }
547
548 return 0;
549 }
550
551 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
552 struct iw_request_info *info,
553 struct iw_param *frag, char *extra)
554 {
555 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
556
557 frag->value = local->fragmentation_threshold;
558 frag->disabled = (frag->value >= IEEE80211_MAX_FRAG_THRESHOLD);
559 frag->fixed = 1;
560
561 return 0;
562 }
563
564
565 static int ieee80211_ioctl_siwretry(struct net_device *dev,
566 struct iw_request_info *info,
567 struct iw_param *retry, char *extra)
568 {
569 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
570
571 if (retry->disabled ||
572 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
573 return -EINVAL;
574
575 if (retry->flags & IW_RETRY_MAX) {
576 local->hw.conf.long_frame_max_tx_count = retry->value;
577 } else if (retry->flags & IW_RETRY_MIN) {
578 local->hw.conf.short_frame_max_tx_count = retry->value;
579 } else {
580 local->hw.conf.long_frame_max_tx_count = retry->value;
581 local->hw.conf.short_frame_max_tx_count = retry->value;
582 }
583
584 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
585
586 return 0;
587 }
588
589
590 static int ieee80211_ioctl_giwretry(struct net_device *dev,
591 struct iw_request_info *info,
592 struct iw_param *retry, char *extra)
593 {
594 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
595
596 retry->disabled = 0;
597 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
598 /* first return min value, iwconfig will ask max value
599 * later if needed */
600 retry->flags |= IW_RETRY_LIMIT;
601 retry->value = local->hw.conf.short_frame_max_tx_count;
602 if (local->hw.conf.long_frame_max_tx_count !=
603 local->hw.conf.short_frame_max_tx_count)
604 retry->flags |= IW_RETRY_MIN;
605 return 0;
606 }
607 if (retry->flags & IW_RETRY_MAX) {
608 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
609 retry->value = local->hw.conf.long_frame_max_tx_count;
610 }
611
612 return 0;
613 }
614
615 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
616 struct iw_request_info *info,
617 struct iw_point *data, char *extra)
618 {
619 struct ieee80211_sub_if_data *sdata;
620 struct iw_mlme *mlme = (struct iw_mlme *) extra;
621
622 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
623 if (!(sdata->vif.type == NL80211_IFTYPE_STATION))
624 return -EINVAL;
625
626 switch (mlme->cmd) {
627 case IW_MLME_DEAUTH:
628 /* TODO: mlme->addr.sa_data */
629 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
630 case IW_MLME_DISASSOC:
631 /* TODO: mlme->addr.sa_data */
632 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
633 default:
634 return -EOPNOTSUPP;
635 }
636 }
637
638
639 static int ieee80211_ioctl_siwencode(struct net_device *dev,
640 struct iw_request_info *info,
641 struct iw_point *erq, char *keybuf)
642 {
643 struct ieee80211_sub_if_data *sdata;
644 int idx, i, alg = ALG_WEP;
645 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
646 int remove = 0, ret;
647
648 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
649
650 idx = erq->flags & IW_ENCODE_INDEX;
651 if (idx == 0) {
652 if (sdata->default_key)
653 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
654 if (sdata->default_key == sdata->keys[i]) {
655 idx = i;
656 break;
657 }
658 }
659 } else if (idx < 1 || idx > 4)
660 return -EINVAL;
661 else
662 idx--;
663
664 if (erq->flags & IW_ENCODE_DISABLED)
665 remove = 1;
666 else if (erq->length == 0) {
667 /* No key data - just set the default TX key index */
668 ieee80211_set_default_key(sdata, idx);
669 return 0;
670 }
671
672 ret = ieee80211_set_encryption(
673 sdata, bcaddr,
674 idx, alg, remove,
675 !sdata->default_key,
676 keybuf, erq->length);
677
678 if (!ret) {
679 if (remove)
680 sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
681 else
682 sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED;
683 }
684
685 return ret;
686 }
687
688
689 static int ieee80211_ioctl_giwencode(struct net_device *dev,
690 struct iw_request_info *info,
691 struct iw_point *erq, char *key)
692 {
693 struct ieee80211_sub_if_data *sdata;
694 int idx, i;
695
696 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
697
698 idx = erq->flags & IW_ENCODE_INDEX;
699 if (idx < 1 || idx > 4) {
700 idx = -1;
701 if (!sdata->default_key)
702 idx = 0;
703 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
704 if (sdata->default_key == sdata->keys[i]) {
705 idx = i;
706 break;
707 }
708 }
709 if (idx < 0)
710 return -EINVAL;
711 } else
712 idx--;
713
714 erq->flags = idx + 1;
715
716 if (!sdata->keys[idx]) {
717 erq->length = 0;
718 erq->flags |= IW_ENCODE_DISABLED;
719 return 0;
720 }
721
722 memcpy(key, sdata->keys[idx]->conf.key,
723 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
724 erq->length = sdata->keys[idx]->conf.keylen;
725 erq->flags |= IW_ENCODE_ENABLED;
726
727 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
728 switch (sdata->u.mgd.auth_alg) {
729 case WLAN_AUTH_OPEN:
730 case WLAN_AUTH_LEAP:
731 erq->flags |= IW_ENCODE_OPEN;
732 break;
733 case WLAN_AUTH_SHARED_KEY:
734 erq->flags |= IW_ENCODE_RESTRICTED;
735 break;
736 }
737 }
738
739 return 0;
740 }
741
742 static int ieee80211_ioctl_siwpower(struct net_device *dev,
743 struct iw_request_info *info,
744 struct iw_param *wrq,
745 char *extra)
746 {
747 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
748 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
749 struct ieee80211_conf *conf = &local->hw.conf;
750 int ret = 0, timeout = 0;
751 bool ps;
752
753 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
754 return -EOPNOTSUPP;
755
756 if (sdata->vif.type != NL80211_IFTYPE_STATION)
757 return -EINVAL;
758
759 if (wrq->disabled) {
760 ps = false;
761 timeout = 0;
762 goto set;
763 }
764
765 switch (wrq->flags & IW_POWER_MODE) {
766 case IW_POWER_ON: /* If not specified */
767 case IW_POWER_MODE: /* If set all mask */
768 case IW_POWER_ALL_R: /* If explicitely state all */
769 ps = true;
770 break;
771 default: /* Otherwise we ignore */
772 return -EINVAL;
773 }
774
775 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
776 return -EINVAL;
777
778 if (wrq->flags & IW_POWER_TIMEOUT)
779 timeout = wrq->value / 1000;
780
781 set:
782 if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
783 return ret;
784
785 local->powersave = ps;
786 conf->dynamic_ps_timeout = timeout;
787
788 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
789 ret = ieee80211_hw_config(local,
790 IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
791
792 if (!(sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
793 return ret;
794
795 if (conf->dynamic_ps_timeout > 0 &&
796 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
797 mod_timer(&local->dynamic_ps_timer, jiffies +
798 msecs_to_jiffies(conf->dynamic_ps_timeout));
799 } else {
800 if (local->powersave) {
801 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
802 ieee80211_send_nullfunc(local, sdata, 1);
803 conf->flags |= IEEE80211_CONF_PS;
804 ret = ieee80211_hw_config(local,
805 IEEE80211_CONF_CHANGE_PS);
806 } else {
807 conf->flags &= ~IEEE80211_CONF_PS;
808 ret = ieee80211_hw_config(local,
809 IEEE80211_CONF_CHANGE_PS);
810 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
811 ieee80211_send_nullfunc(local, sdata, 0);
812 del_timer_sync(&local->dynamic_ps_timer);
813 cancel_work_sync(&local->dynamic_ps_enable_work);
814 }
815 }
816
817 return ret;
818 }
819
820 static int ieee80211_ioctl_giwpower(struct net_device *dev,
821 struct iw_request_info *info,
822 union iwreq_data *wrqu,
823 char *extra)
824 {
825 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
826
827 wrqu->power.disabled = !local->powersave;
828
829 return 0;
830 }
831
832 static int ieee80211_ioctl_siwauth(struct net_device *dev,
833 struct iw_request_info *info,
834 struct iw_param *data, char *extra)
835 {
836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
837 int ret = 0;
838
839 switch (data->flags & IW_AUTH_INDEX) {
840 case IW_AUTH_WPA_VERSION:
841 case IW_AUTH_CIPHER_GROUP:
842 case IW_AUTH_WPA_ENABLED:
843 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
844 case IW_AUTH_KEY_MGMT:
845 case IW_AUTH_CIPHER_GROUP_MGMT:
846 break;
847 case IW_AUTH_CIPHER_PAIRWISE:
848 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
849 if (data->value & (IW_AUTH_CIPHER_WEP40 |
850 IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
851 sdata->u.mgd.flags |=
852 IEEE80211_STA_TKIP_WEP_USED;
853 else
854 sdata->u.mgd.flags &=
855 ~IEEE80211_STA_TKIP_WEP_USED;
856 }
857 break;
858 case IW_AUTH_DROP_UNENCRYPTED:
859 sdata->drop_unencrypted = !!data->value;
860 break;
861 case IW_AUTH_PRIVACY_INVOKED:
862 if (sdata->vif.type != NL80211_IFTYPE_STATION)
863 ret = -EINVAL;
864 else {
865 sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
866 /*
867 * Privacy invoked by wpa_supplicant, store the
868 * value and allow associating to a protected
869 * network without having a key up front.
870 */
871 if (data->value)
872 sdata->u.mgd.flags |=
873 IEEE80211_STA_PRIVACY_INVOKED;
874 }
875 break;
876 case IW_AUTH_80211_AUTH_ALG:
877 if (sdata->vif.type == NL80211_IFTYPE_STATION)
878 sdata->u.mgd.auth_algs = data->value;
879 else
880 ret = -EOPNOTSUPP;
881 break;
882 case IW_AUTH_MFP:
883 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
884 ret = -EOPNOTSUPP;
885 break;
886 }
887 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
888 switch (data->value) {
889 case IW_AUTH_MFP_DISABLED:
890 sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
891 break;
892 case IW_AUTH_MFP_OPTIONAL:
893 sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
894 break;
895 case IW_AUTH_MFP_REQUIRED:
896 sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
897 break;
898 default:
899 ret = -EINVAL;
900 }
901 } else
902 ret = -EOPNOTSUPP;
903 break;
904 default:
905 ret = -EOPNOTSUPP;
906 break;
907 }
908 return ret;
909 }
910
911 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
912 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
913 {
914 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
915 struct iw_statistics *wstats = &local->wstats;
916 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
917 struct sta_info *sta = NULL;
918
919 rcu_read_lock();
920
921 if (sdata->vif.type == NL80211_IFTYPE_STATION)
922 sta = sta_info_get(local, sdata->u.mgd.bssid);
923
924 if (!sta) {
925 wstats->discard.fragment = 0;
926 wstats->discard.misc = 0;
927 wstats->qual.qual = 0;
928 wstats->qual.level = 0;
929 wstats->qual.noise = 0;
930 wstats->qual.updated = IW_QUAL_ALL_INVALID;
931 } else {
932 wstats->qual.updated = 0;
933 /*
934 * mirror what cfg80211 does for iwrange/scan results,
935 * otherwise userspace gets confused.
936 */
937 if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
938 IEEE80211_HW_SIGNAL_DBM)) {
939 wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
940 wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
941 } else {
942 wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
943 wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
944 }
945
946 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
947 wstats->qual.level = sta->last_signal;
948 wstats->qual.qual = sta->last_signal;
949 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
950 int sig = sta->last_signal;
951
952 wstats->qual.updated |= IW_QUAL_DBM;
953 wstats->qual.level = sig;
954 if (sig < -110)
955 sig = -110;
956 else if (sig > -40)
957 sig = -40;
958 wstats->qual.qual = sig + 110;
959 }
960
961 if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
962 /*
963 * This assumes that if driver reports noise, it also
964 * reports signal in dBm.
965 */
966 wstats->qual.noise = sta->last_noise;
967 wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
968 } else {
969 wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
970 }
971 }
972
973 rcu_read_unlock();
974
975 return wstats;
976 }
977
978 static int ieee80211_ioctl_giwauth(struct net_device *dev,
979 struct iw_request_info *info,
980 struct iw_param *data, char *extra)
981 {
982 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
983 int ret = 0;
984
985 switch (data->flags & IW_AUTH_INDEX) {
986 case IW_AUTH_80211_AUTH_ALG:
987 if (sdata->vif.type == NL80211_IFTYPE_STATION)
988 data->value = sdata->u.mgd.auth_algs;
989 else
990 ret = -EOPNOTSUPP;
991 break;
992 default:
993 ret = -EOPNOTSUPP;
994 break;
995 }
996 return ret;
997 }
998
999
1000 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1001 struct iw_request_info *info,
1002 struct iw_point *erq, char *extra)
1003 {
1004 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1005 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1006 int uninitialized_var(alg), idx, i, remove = 0;
1007
1008 switch (ext->alg) {
1009 case IW_ENCODE_ALG_NONE:
1010 remove = 1;
1011 break;
1012 case IW_ENCODE_ALG_WEP:
1013 alg = ALG_WEP;
1014 break;
1015 case IW_ENCODE_ALG_TKIP:
1016 alg = ALG_TKIP;
1017 break;
1018 case IW_ENCODE_ALG_CCMP:
1019 alg = ALG_CCMP;
1020 break;
1021 case IW_ENCODE_ALG_AES_CMAC:
1022 alg = ALG_AES_CMAC;
1023 break;
1024 default:
1025 return -EOPNOTSUPP;
1026 }
1027
1028 if (erq->flags & IW_ENCODE_DISABLED)
1029 remove = 1;
1030
1031 idx = erq->flags & IW_ENCODE_INDEX;
1032 if (alg == ALG_AES_CMAC) {
1033 if (idx < NUM_DEFAULT_KEYS + 1 ||
1034 idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
1035 idx = -1;
1036 if (!sdata->default_mgmt_key)
1037 idx = 0;
1038 else for (i = NUM_DEFAULT_KEYS;
1039 i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
1040 i++) {
1041 if (sdata->default_mgmt_key == sdata->keys[i])
1042 {
1043 idx = i;
1044 break;
1045 }
1046 }
1047 if (idx < 0)
1048 return -EINVAL;
1049 } else
1050 idx--;
1051 } else {
1052 if (idx < 1 || idx > 4) {
1053 idx = -1;
1054 if (!sdata->default_key)
1055 idx = 0;
1056 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1057 if (sdata->default_key == sdata->keys[i]) {
1058 idx = i;
1059 break;
1060 }
1061 }
1062 if (idx < 0)
1063 return -EINVAL;
1064 } else
1065 idx--;
1066 }
1067
1068 return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1069 remove,
1070 ext->ext_flags &
1071 IW_ENCODE_EXT_SET_TX_KEY,
1072 ext->key, ext->key_len);
1073 }
1074
1075
1076 /* Structures to export the Wireless Handlers */
1077
1078 static const iw_handler ieee80211_handler[] =
1079 {
1080 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1081 (iw_handler) cfg80211_wext_giwname, /* SIOCGIWNAME */
1082 (iw_handler) NULL, /* SIOCSIWNWID */
1083 (iw_handler) NULL, /* SIOCGIWNWID */
1084 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1085 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1086 (iw_handler) cfg80211_wext_siwmode, /* SIOCSIWMODE */
1087 (iw_handler) cfg80211_wext_giwmode, /* SIOCGIWMODE */
1088 (iw_handler) NULL, /* SIOCSIWSENS */
1089 (iw_handler) NULL, /* SIOCGIWSENS */
1090 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1091 (iw_handler) cfg80211_wext_giwrange, /* SIOCGIWRANGE */
1092 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1093 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1094 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1095 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1096 (iw_handler) NULL, /* SIOCSIWSPY */
1097 (iw_handler) NULL, /* SIOCGIWSPY */
1098 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1099 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1100 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1101 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1102 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1103 (iw_handler) NULL, /* SIOCGIWAPLIST */
1104 (iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */
1105 (iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */
1106 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1107 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1108 (iw_handler) NULL, /* SIOCSIWNICKN */
1109 (iw_handler) NULL, /* SIOCGIWNICKN */
1110 (iw_handler) NULL, /* -- hole -- */
1111 (iw_handler) NULL, /* -- hole -- */
1112 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1113 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1114 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1115 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1116 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1117 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1118 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1119 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1120 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1121 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1122 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1123 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1124 (iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */
1125 (iw_handler) ieee80211_ioctl_giwpower, /* SIOCGIWPOWER */
1126 (iw_handler) NULL, /* -- hole -- */
1127 (iw_handler) NULL, /* -- hole -- */
1128 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1129 (iw_handler) NULL, /* SIOCGIWGENIE */
1130 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1131 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1132 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1133 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1134 (iw_handler) NULL, /* SIOCSIWPMKSA */
1135 (iw_handler) NULL, /* -- hole -- */
1136 };
1137
1138 const struct iw_handler_def ieee80211_iw_handler_def =
1139 {
1140 .num_standard = ARRAY_SIZE(ieee80211_handler),
1141 .standard = (iw_handler *) ieee80211_handler,
1142 .get_wireless_stats = ieee80211_get_wireless_stats,
1143 };
Support for the Chinese Samsung S3C2440 based development boards