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sh: migor: Fix up CEU use flags.
[linux-2.6/mini2440.git] / net / mac80211 / wext.c
blobdeb4ecec122a5f97be85cdf41629b4bc5f7a10f3
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 u32 reconf_flags = 0;
421 int new_power_level;
422
423 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
424 return -EINVAL;
425 if (data->txpower.flags & IW_TXPOW_RANGE)
426 return -EINVAL;
427 if (!chan)
428 return -EINVAL;
429
430 if (data->txpower.fixed)
431 new_power_level = min(data->txpower.value, chan->max_power);
432 else /* Automatic power level setting */
433 new_power_level = chan->max_power;
434
435 local->user_power_level = new_power_level;
436 if (local->hw.conf.power_level != new_power_level)
437 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
438
439 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
440 local->hw.conf.radio_enabled = !(data->txpower.disabled);
441 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
442 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
443 }
444
445 if (reconf_flags)
446 ieee80211_hw_config(local, reconf_flags);
447
448 return 0;
449 }
450
451 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
452 struct iw_request_info *info,
453 union iwreq_data *data, char *extra)
454 {
455 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
456
457 data->txpower.fixed = 1;
458 data->txpower.disabled = !(local->hw.conf.radio_enabled);
459 data->txpower.value = local->hw.conf.power_level;
460 data->txpower.flags = IW_TXPOW_DBM;
461
462 return 0;
463 }
464
465 static int ieee80211_ioctl_siwrts(struct net_device *dev,
466 struct iw_request_info *info,
467 struct iw_param *rts, char *extra)
468 {
469 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
470
471 if (rts->disabled)
472 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
473 else if (!rts->fixed)
474 /* if the rts value is not fixed, then take default */
475 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
476 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
477 return -EINVAL;
478 else
479 local->rts_threshold = rts->value;
480
481 /* If the wlan card performs RTS/CTS in hardware/firmware,
482 * configure it here */
483
484 if (local->ops->set_rts_threshold)
485 local->ops->set_rts_threshold(local_to_hw(local),
486 local->rts_threshold);
487
488 return 0;
489 }
490
491 static int ieee80211_ioctl_giwrts(struct net_device *dev,
492 struct iw_request_info *info,
493 struct iw_param *rts, char *extra)
494 {
495 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
496
497 rts->value = local->rts_threshold;
498 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
499 rts->fixed = 1;
500
501 return 0;
502 }
503
504
505 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
506 struct iw_request_info *info,
507 struct iw_param *frag, char *extra)
508 {
509 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
510
511 if (frag->disabled)
512 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
513 else if (!frag->fixed)
514 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
515 else if (frag->value < 256 ||
516 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
517 return -EINVAL;
518 else {
519 /* Fragment length must be even, so strip LSB. */
520 local->fragmentation_threshold = frag->value & ~0x1;
521 }
522
523 return 0;
524 }
525
526 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
527 struct iw_request_info *info,
528 struct iw_param *frag, char *extra)
529 {
530 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
531
532 frag->value = local->fragmentation_threshold;
533 frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
534 frag->fixed = 1;
535
536 return 0;
537 }
538
539
540 static int ieee80211_ioctl_siwretry(struct net_device *dev,
541 struct iw_request_info *info,
542 struct iw_param *retry, char *extra)
543 {
544 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
545
546 if (retry->disabled ||
547 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
548 return -EINVAL;
549
550 if (retry->flags & IW_RETRY_MAX) {
551 local->hw.conf.long_frame_max_tx_count = retry->value;
552 } else if (retry->flags & IW_RETRY_MIN) {
553 local->hw.conf.short_frame_max_tx_count = retry->value;
554 } else {
555 local->hw.conf.long_frame_max_tx_count = retry->value;
556 local->hw.conf.short_frame_max_tx_count = retry->value;
557 }
558
559 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
560
561 return 0;
562 }
563
564
565 static int ieee80211_ioctl_giwretry(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 retry->disabled = 0;
572 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
573 /* first return min value, iwconfig will ask max value
574 * later if needed */
575 retry->flags |= IW_RETRY_LIMIT;
576 retry->value = local->hw.conf.short_frame_max_tx_count;
577 if (local->hw.conf.long_frame_max_tx_count !=
578 local->hw.conf.short_frame_max_tx_count)
579 retry->flags |= IW_RETRY_MIN;
580 return 0;
581 }
582 if (retry->flags & IW_RETRY_MAX) {
583 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
584 retry->value = local->hw.conf.long_frame_max_tx_count;
585 }
586
587 return 0;
588 }
589
590 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
591 struct iw_request_info *info,
592 struct iw_point *data, char *extra)
593 {
594 struct ieee80211_sub_if_data *sdata;
595 struct iw_mlme *mlme = (struct iw_mlme *) extra;
596
597 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
598 if (!(sdata->vif.type == NL80211_IFTYPE_STATION))
599 return -EINVAL;
600
601 switch (mlme->cmd) {
602 case IW_MLME_DEAUTH:
603 /* TODO: mlme->addr.sa_data */
604 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
605 case IW_MLME_DISASSOC:
606 /* TODO: mlme->addr.sa_data */
607 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
608 default:
609 return -EOPNOTSUPP;
610 }
611 }
612
613
614 static int ieee80211_ioctl_siwencode(struct net_device *dev,
615 struct iw_request_info *info,
616 struct iw_point *erq, char *keybuf)
617 {
618 struct ieee80211_sub_if_data *sdata;
619 int idx, i, alg = ALG_WEP;
620 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
621 int remove = 0, ret;
622
623 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
624
625 idx = erq->flags & IW_ENCODE_INDEX;
626 if (idx == 0) {
627 if (sdata->default_key)
628 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
629 if (sdata->default_key == sdata->keys[i]) {
630 idx = i;
631 break;
632 }
633 }
634 } else if (idx < 1 || idx > 4)
635 return -EINVAL;
636 else
637 idx--;
638
639 if (erq->flags & IW_ENCODE_DISABLED)
640 remove = 1;
641 else if (erq->length == 0) {
642 /* No key data - just set the default TX key index */
643 ieee80211_set_default_key(sdata, idx);
644 return 0;
645 }
646
647 ret = ieee80211_set_encryption(
648 sdata, bcaddr,
649 idx, alg, remove,
650 !sdata->default_key,
651 keybuf, erq->length);
652
653 if (!ret) {
654 if (remove)
655 sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
656 else
657 sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED;
658 }
659
660 return ret;
661 }
662
663
664 static int ieee80211_ioctl_giwencode(struct net_device *dev,
665 struct iw_request_info *info,
666 struct iw_point *erq, char *key)
667 {
668 struct ieee80211_sub_if_data *sdata;
669 int idx, i;
670
671 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
672
673 idx = erq->flags & IW_ENCODE_INDEX;
674 if (idx < 1 || idx > 4) {
675 idx = -1;
676 if (!sdata->default_key)
677 idx = 0;
678 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
679 if (sdata->default_key == sdata->keys[i]) {
680 idx = i;
681 break;
682 }
683 }
684 if (idx < 0)
685 return -EINVAL;
686 } else
687 idx--;
688
689 erq->flags = idx + 1;
690
691 if (!sdata->keys[idx]) {
692 erq->length = 0;
693 erq->flags |= IW_ENCODE_DISABLED;
694 return 0;
695 }
696
697 memcpy(key, sdata->keys[idx]->conf.key,
698 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
699 erq->length = sdata->keys[idx]->conf.keylen;
700 erq->flags |= IW_ENCODE_ENABLED;
701
702 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
703 switch (sdata->u.mgd.auth_alg) {
704 case WLAN_AUTH_OPEN:
705 case WLAN_AUTH_LEAP:
706 erq->flags |= IW_ENCODE_OPEN;
707 break;
708 case WLAN_AUTH_SHARED_KEY:
709 erq->flags |= IW_ENCODE_RESTRICTED;
710 break;
711 }
712 }
713
714 return 0;
715 }
716
717 static int ieee80211_ioctl_siwpower(struct net_device *dev,
718 struct iw_request_info *info,
719 struct iw_param *wrq,
720 char *extra)
721 {
722 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
723 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
724 struct ieee80211_conf *conf = &local->hw.conf;
725 int ret = 0, timeout = 0;
726 bool ps;
727
728 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
729 return -EOPNOTSUPP;
730
731 if (sdata->vif.type != NL80211_IFTYPE_STATION)
732 return -EINVAL;
733
734 if (wrq->disabled) {
735 ps = false;
736 timeout = 0;
737 goto set;
738 }
739
740 switch (wrq->flags & IW_POWER_MODE) {
741 case IW_POWER_ON: /* If not specified */
742 case IW_POWER_MODE: /* If set all mask */
743 case IW_POWER_ALL_R: /* If explicitely state all */
744 ps = true;
745 break;
746 default: /* Otherwise we ignore */
747 return -EINVAL;
748 }
749
750 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
751 return -EINVAL;
752
753 if (wrq->flags & IW_POWER_TIMEOUT)
754 timeout = wrq->value / 1000;
755
756 set:
757 if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
758 return ret;
759
760 local->powersave = ps;
761 conf->dynamic_ps_timeout = timeout;
762
763 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
764 ret = ieee80211_hw_config(local,
765 IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
766
767 if (!(sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
768 return ret;
769
770 if (conf->dynamic_ps_timeout > 0 &&
771 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
772 mod_timer(&local->dynamic_ps_timer, jiffies +
773 msecs_to_jiffies(conf->dynamic_ps_timeout));
774 } else {
775 if (local->powersave) {
776 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
777 ieee80211_send_nullfunc(local, sdata, 1);
778 conf->flags |= IEEE80211_CONF_PS;
779 ret = ieee80211_hw_config(local,
780 IEEE80211_CONF_CHANGE_PS);
781 } else {
782 conf->flags &= ~IEEE80211_CONF_PS;
783 ret = ieee80211_hw_config(local,
784 IEEE80211_CONF_CHANGE_PS);
785 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
786 ieee80211_send_nullfunc(local, sdata, 0);
787 del_timer_sync(&local->dynamic_ps_timer);
788 cancel_work_sync(&local->dynamic_ps_enable_work);
789 }
790 }
791
792 return ret;
793 }
794
795 static int ieee80211_ioctl_giwpower(struct net_device *dev,
796 struct iw_request_info *info,
797 union iwreq_data *wrqu,
798 char *extra)
799 {
800 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
801
802 wrqu->power.disabled = !local->powersave;
803
804 return 0;
805 }
806
807 static int ieee80211_ioctl_siwauth(struct net_device *dev,
808 struct iw_request_info *info,
809 struct iw_param *data, char *extra)
810 {
811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
812 int ret = 0;
813
814 switch (data->flags & IW_AUTH_INDEX) {
815 case IW_AUTH_WPA_VERSION:
816 case IW_AUTH_CIPHER_GROUP:
817 case IW_AUTH_WPA_ENABLED:
818 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
819 case IW_AUTH_KEY_MGMT:
820 case IW_AUTH_CIPHER_GROUP_MGMT:
821 break;
822 case IW_AUTH_CIPHER_PAIRWISE:
823 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
824 if (data->value & (IW_AUTH_CIPHER_WEP40 |
825 IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
826 sdata->u.mgd.flags |=
827 IEEE80211_STA_TKIP_WEP_USED;
828 else
829 sdata->u.mgd.flags &=
830 ~IEEE80211_STA_TKIP_WEP_USED;
831 }
832 break;
833 case IW_AUTH_DROP_UNENCRYPTED:
834 sdata->drop_unencrypted = !!data->value;
835 break;
836 case IW_AUTH_PRIVACY_INVOKED:
837 if (sdata->vif.type != NL80211_IFTYPE_STATION)
838 ret = -EINVAL;
839 else {
840 sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
841 /*
842 * Privacy invoked by wpa_supplicant, store the
843 * value and allow associating to a protected
844 * network without having a key up front.
845 */
846 if (data->value)
847 sdata->u.mgd.flags |=
848 IEEE80211_STA_PRIVACY_INVOKED;
849 }
850 break;
851 case IW_AUTH_80211_AUTH_ALG:
852 if (sdata->vif.type == NL80211_IFTYPE_STATION)
853 sdata->u.mgd.auth_algs = data->value;
854 else
855 ret = -EOPNOTSUPP;
856 break;
857 case IW_AUTH_MFP:
858 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
859 ret = -EOPNOTSUPP;
860 break;
861 }
862 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
863 switch (data->value) {
864 case IW_AUTH_MFP_DISABLED:
865 sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
866 break;
867 case IW_AUTH_MFP_OPTIONAL:
868 sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
869 break;
870 case IW_AUTH_MFP_REQUIRED:
871 sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
872 break;
873 default:
874 ret = -EINVAL;
875 }
876 } else
877 ret = -EOPNOTSUPP;
878 break;
879 default:
880 ret = -EOPNOTSUPP;
881 break;
882 }
883 return ret;
884 }
885
886 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
887 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
888 {
889 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
890 struct iw_statistics *wstats = &local->wstats;
891 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
892 struct sta_info *sta = NULL;
893
894 rcu_read_lock();
895
896 if (sdata->vif.type == NL80211_IFTYPE_STATION)
897 sta = sta_info_get(local, sdata->u.mgd.bssid);
898
899 if (!sta) {
900 wstats->discard.fragment = 0;
901 wstats->discard.misc = 0;
902 wstats->qual.qual = 0;
903 wstats->qual.level = 0;
904 wstats->qual.noise = 0;
905 wstats->qual.updated = IW_QUAL_ALL_INVALID;
906 } else {
907 wstats->qual.updated = 0;
908 /*
909 * mirror what cfg80211 does for iwrange/scan results,
910 * otherwise userspace gets confused.
911 */
912 if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
913 IEEE80211_HW_SIGNAL_DBM)) {
914 wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
915 wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
916 } else {
917 wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
918 wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
919 }
920
921 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
922 wstats->qual.level = sta->last_signal;
923 wstats->qual.qual = sta->last_signal;
924 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
925 int sig = sta->last_signal;
926
927 wstats->qual.updated |= IW_QUAL_DBM;
928 wstats->qual.level = sig;
929 if (sig < -110)
930 sig = -110;
931 else if (sig > -40)
932 sig = -40;
933 wstats->qual.qual = sig + 110;
934 }
935
936 if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
937 /*
938 * This assumes that if driver reports noise, it also
939 * reports signal in dBm.
940 */
941 wstats->qual.noise = sta->last_noise;
942 wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
943 } else {
944 wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
945 }
946 }
947
948 rcu_read_unlock();
949
950 return wstats;
951 }
952
953 static int ieee80211_ioctl_giwauth(struct net_device *dev,
954 struct iw_request_info *info,
955 struct iw_param *data, char *extra)
956 {
957 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
958 int ret = 0;
959
960 switch (data->flags & IW_AUTH_INDEX) {
961 case IW_AUTH_80211_AUTH_ALG:
962 if (sdata->vif.type == NL80211_IFTYPE_STATION)
963 data->value = sdata->u.mgd.auth_algs;
964 else
965 ret = -EOPNOTSUPP;
966 break;
967 default:
968 ret = -EOPNOTSUPP;
969 break;
970 }
971 return ret;
972 }
973
974
975 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
976 struct iw_request_info *info,
977 struct iw_point *erq, char *extra)
978 {
979 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
980 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
981 int uninitialized_var(alg), idx, i, remove = 0;
982
983 switch (ext->alg) {
984 case IW_ENCODE_ALG_NONE:
985 remove = 1;
986 break;
987 case IW_ENCODE_ALG_WEP:
988 alg = ALG_WEP;
989 break;
990 case IW_ENCODE_ALG_TKIP:
991 alg = ALG_TKIP;
992 break;
993 case IW_ENCODE_ALG_CCMP:
994 alg = ALG_CCMP;
995 break;
996 case IW_ENCODE_ALG_AES_CMAC:
997 alg = ALG_AES_CMAC;
998 break;
999 default:
1000 return -EOPNOTSUPP;
1001 }
1002
1003 if (erq->flags & IW_ENCODE_DISABLED)
1004 remove = 1;
1005
1006 idx = erq->flags & IW_ENCODE_INDEX;
1007 if (alg == ALG_AES_CMAC) {
1008 if (idx < NUM_DEFAULT_KEYS + 1 ||
1009 idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
1010 idx = -1;
1011 if (!sdata->default_mgmt_key)
1012 idx = 0;
1013 else for (i = NUM_DEFAULT_KEYS;
1014 i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
1015 i++) {
1016 if (sdata->default_mgmt_key == sdata->keys[i])
1017 {
1018 idx = i;
1019 break;
1020 }
1021 }
1022 if (idx < 0)
1023 return -EINVAL;
1024 } else
1025 idx--;
1026 } else {
1027 if (idx < 1 || idx > 4) {
1028 idx = -1;
1029 if (!sdata->default_key)
1030 idx = 0;
1031 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1032 if (sdata->default_key == sdata->keys[i]) {
1033 idx = i;
1034 break;
1035 }
1036 }
1037 if (idx < 0)
1038 return -EINVAL;
1039 } else
1040 idx--;
1041 }
1042
1043 return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1044 remove,
1045 ext->ext_flags &
1046 IW_ENCODE_EXT_SET_TX_KEY,
1047 ext->key, ext->key_len);
1048 }
1049
1050
1051 /* Structures to export the Wireless Handlers */
1052
1053 static const iw_handler ieee80211_handler[] =
1054 {
1055 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1056 (iw_handler) cfg80211_wext_giwname, /* SIOCGIWNAME */
1057 (iw_handler) NULL, /* SIOCSIWNWID */
1058 (iw_handler) NULL, /* SIOCGIWNWID */
1059 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1060 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1061 (iw_handler) cfg80211_wext_siwmode, /* SIOCSIWMODE */
1062 (iw_handler) cfg80211_wext_giwmode, /* SIOCGIWMODE */
1063 (iw_handler) NULL, /* SIOCSIWSENS */
1064 (iw_handler) NULL, /* SIOCGIWSENS */
1065 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1066 (iw_handler) cfg80211_wext_giwrange, /* SIOCGIWRANGE */
1067 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1068 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1069 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1070 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1071 (iw_handler) NULL, /* SIOCSIWSPY */
1072 (iw_handler) NULL, /* SIOCGIWSPY */
1073 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1074 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1075 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1076 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1077 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1078 (iw_handler) NULL, /* SIOCGIWAPLIST */
1079 (iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */
1080 (iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */
1081 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1082 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1083 (iw_handler) NULL, /* SIOCSIWNICKN */
1084 (iw_handler) NULL, /* SIOCGIWNICKN */
1085 (iw_handler) NULL, /* -- hole -- */
1086 (iw_handler) NULL, /* -- hole -- */
1087 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1088 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1089 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1090 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1091 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1092 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1093 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1094 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1095 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1096 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1097 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1098 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1099 (iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */
1100 (iw_handler) ieee80211_ioctl_giwpower, /* SIOCGIWPOWER */
1101 (iw_handler) NULL, /* -- hole -- */
1102 (iw_handler) NULL, /* -- hole -- */
1103 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1104 (iw_handler) NULL, /* SIOCGIWGENIE */
1105 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1106 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1107 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1108 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1109 (iw_handler) NULL, /* SIOCSIWPMKSA */
1110 (iw_handler) NULL, /* -- hole -- */
1111 };
1112
1113 const struct iw_handler_def ieee80211_iw_handler_def =
1114 {
1115 .num_standard = ARRAY_SIZE(ieee80211_handler),
1116 .standard = (iw_handler *) ieee80211_handler,
1117 .get_wireless_stats = ieee80211_get_wireless_stats,
1118 };
Support for the Chinese Samsung S3C2440 based development boards