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replace net_device arguments with ieee80211_{local,sub_if_data} as appropriate
[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 (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
41 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
42 sdata->dev->name, idx);
43 return -EINVAL;
44 }
45
46 if (remove) {
47 rcu_read_lock();
48
49 err = 0;
50
51 if (is_broadcast_ether_addr(sta_addr)) {
52 key = sdata->keys[idx];
53 } else {
54 sta = sta_info_get(local, sta_addr);
55 if (!sta) {
56 err = -ENOENT;
57 goto out_unlock;
58 }
59 key = sta->key;
60 }
61
62 ieee80211_key_free(key);
63 } else {
64 key = ieee80211_key_alloc(alg, idx, key_len, _key);
65 if (!key)
66 return -ENOMEM;
67
68 sta = NULL;
69 err = 0;
70
71 rcu_read_lock();
72
73 if (!is_broadcast_ether_addr(sta_addr)) {
74 set_tx_key = 0;
75 /*
76 * According to the standard, the key index of a
77 * pairwise key must be zero. However, some AP are
78 * broken when it comes to WEP key indices, so we
79 * work around this.
80 */
81 if (idx != 0 && alg != ALG_WEP) {
82 ieee80211_key_free(key);
83 err = -EINVAL;
84 goto out_unlock;
85 }
86
87 sta = sta_info_get(local, sta_addr);
88 if (!sta) {
89 ieee80211_key_free(key);
90 err = -ENOENT;
91 goto out_unlock;
92 }
93 }
94
95 if (alg == ALG_WEP &&
96 key_len != LEN_WEP40 && key_len != LEN_WEP104) {
97 ieee80211_key_free(key);
98 err = -EINVAL;
99 goto out_unlock;
100 }
101
102 ieee80211_key_link(key, sdata, sta);
103
104 if (set_tx_key || (!sta && !sdata->default_key && key))
105 ieee80211_set_default_key(sdata, idx);
106 }
107
108 out_unlock:
109 rcu_read_unlock();
110
111 return err;
112 }
113
114 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
115 struct iw_request_info *info,
116 struct iw_point *data, char *extra)
117 {
118 struct ieee80211_sub_if_data *sdata;
119
120 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
121
122 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
123 return -EOPNOTSUPP;
124
125 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
126 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
127 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
128 if (ret)
129 return ret;
130 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
131 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
132 return 0;
133 }
134
135 return -EOPNOTSUPP;
136 }
137
138 static int ieee80211_ioctl_giwname(struct net_device *dev,
139 struct iw_request_info *info,
140 char *name, char *extra)
141 {
142 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
143 struct ieee80211_supported_band *sband;
144 u8 is_ht = 0, is_a = 0, is_b = 0, is_g = 0;
145
146
147 sband = local->hw.wiphy->bands[IEEE80211_BAND_5GHZ];
148 if (sband) {
149 is_a = 1;
150 is_ht |= sband->ht_info.ht_supported;
151 }
152
153 sband = local->hw.wiphy->bands[IEEE80211_BAND_2GHZ];
154 if (sband) {
155 int i;
156 /* Check for mandatory rates */
157 for (i = 0; i < sband->n_bitrates; i++) {
158 if (sband->bitrates[i].bitrate == 10)
159 is_b = 1;
160 if (sband->bitrates[i].bitrate == 60)
161 is_g = 1;
162 }
163 is_ht |= sband->ht_info.ht_supported;
164 }
165
166 strcpy(name, "IEEE 802.11");
167 if (is_a)
168 strcat(name, "a");
169 if (is_b)
170 strcat(name, "b");
171 if (is_g)
172 strcat(name, "g");
173 if (is_ht)
174 strcat(name, "n");
175
176 return 0;
177 }
178
179
180 static int ieee80211_ioctl_giwrange(struct net_device *dev,
181 struct iw_request_info *info,
182 struct iw_point *data, char *extra)
183 {
184 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
185 struct iw_range *range = (struct iw_range *) extra;
186 enum ieee80211_band band;
187 int c = 0;
188
189 data->length = sizeof(struct iw_range);
190 memset(range, 0, sizeof(struct iw_range));
191
192 range->we_version_compiled = WIRELESS_EXT;
193 range->we_version_source = 21;
194 range->retry_capa = IW_RETRY_LIMIT;
195 range->retry_flags = IW_RETRY_LIMIT;
196 range->min_retry = 0;
197 range->max_retry = 255;
198 range->min_rts = 0;
199 range->max_rts = 2347;
200 range->min_frag = 256;
201 range->max_frag = 2346;
202
203 range->encoding_size[0] = 5;
204 range->encoding_size[1] = 13;
205 range->num_encoding_sizes = 2;
206 range->max_encoding_tokens = NUM_DEFAULT_KEYS;
207
208 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC ||
209 local->hw.flags & IEEE80211_HW_SIGNAL_DB)
210 range->max_qual.level = local->hw.max_signal;
211 else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
212 range->max_qual.level = -110;
213 else
214 range->max_qual.level = 0;
215
216 if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
217 range->max_qual.noise = -110;
218 else
219 range->max_qual.noise = 0;
220
221 range->max_qual.qual = 100;
222 range->max_qual.updated = local->wstats_flags;
223
224 range->avg_qual.qual = 50;
225 /* not always true but better than nothing */
226 range->avg_qual.level = range->max_qual.level / 2;
227 range->avg_qual.noise = range->max_qual.noise / 2;
228 range->avg_qual.updated = local->wstats_flags;
229
230 range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
231 IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
232
233
234 for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
235 int i;
236 struct ieee80211_supported_band *sband;
237
238 sband = local->hw.wiphy->bands[band];
239
240 if (!sband)
241 continue;
242
243 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
244 struct ieee80211_channel *chan = &sband->channels[i];
245
246 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
247 range->freq[c].i =
248 ieee80211_frequency_to_channel(
249 chan->center_freq);
250 range->freq[c].m = chan->center_freq;
251 range->freq[c].e = 6;
252 c++;
253 }
254 }
255 }
256 range->num_channels = c;
257 range->num_frequency = c;
258
259 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
260 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
261 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
262
263 range->scan_capa |= IW_SCAN_CAPA_ESSID;
264
265 return 0;
266 }
267
268
269 static int ieee80211_ioctl_siwmode(struct net_device *dev,
270 struct iw_request_info *info,
271 __u32 *mode, char *extra)
272 {
273 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
274 int type;
275
276 if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
277 return -EOPNOTSUPP;
278
279 switch (*mode) {
280 case IW_MODE_INFRA:
281 type = IEEE80211_IF_TYPE_STA;
282 break;
283 case IW_MODE_ADHOC:
284 type = IEEE80211_IF_TYPE_IBSS;
285 break;
286 case IW_MODE_REPEAT:
287 type = IEEE80211_IF_TYPE_WDS;
288 break;
289 case IW_MODE_MONITOR:
290 type = IEEE80211_IF_TYPE_MNTR;
291 break;
292 default:
293 return -EINVAL;
294 }
295
296 return ieee80211_if_change_type(sdata, type);
297 }
298
299
300 static int ieee80211_ioctl_giwmode(struct net_device *dev,
301 struct iw_request_info *info,
302 __u32 *mode, char *extra)
303 {
304 struct ieee80211_sub_if_data *sdata;
305
306 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
307 switch (sdata->vif.type) {
308 case IEEE80211_IF_TYPE_AP:
309 *mode = IW_MODE_MASTER;
310 break;
311 case IEEE80211_IF_TYPE_STA:
312 *mode = IW_MODE_INFRA;
313 break;
314 case IEEE80211_IF_TYPE_IBSS:
315 *mode = IW_MODE_ADHOC;
316 break;
317 case IEEE80211_IF_TYPE_MNTR:
318 *mode = IW_MODE_MONITOR;
319 break;
320 case IEEE80211_IF_TYPE_WDS:
321 *mode = IW_MODE_REPEAT;
322 break;
323 case IEEE80211_IF_TYPE_VLAN:
324 *mode = IW_MODE_SECOND; /* FIXME */
325 break;
326 default:
327 *mode = IW_MODE_AUTO;
328 break;
329 }
330 return 0;
331 }
332
333 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz)
334 {
335 int ret = -EINVAL;
336 struct ieee80211_channel *chan;
337 struct ieee80211_local *local = sdata->local;
338
339 chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
340
341 if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
342 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
343 chan->flags & IEEE80211_CHAN_NO_IBSS) {
344 printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
345 "%d MHz\n", sdata->dev->name, chan->center_freq);
346 return ret;
347 }
348 local->oper_channel = chan;
349
350 if (local->sta_sw_scanning || local->sta_hw_scanning)
351 ret = 0;
352 else
353 ret = ieee80211_hw_config(local);
354
355 rate_control_clear(local);
356 }
357
358 return ret;
359 }
360
361 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
362 struct iw_request_info *info,
363 struct iw_freq *freq, char *extra)
364 {
365 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
366
367 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
368 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
369
370 /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
371 if (freq->e == 0) {
372 if (freq->m < 0) {
373 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
374 sdata->u.sta.flags |=
375 IEEE80211_STA_AUTO_CHANNEL_SEL;
376 return 0;
377 } else
378 return ieee80211_set_freq(sdata,
379 ieee80211_channel_to_frequency(freq->m));
380 } else {
381 int i, div = 1000000;
382 for (i = 0; i < freq->e; i++)
383 div /= 10;
384 if (div > 0)
385 return ieee80211_set_freq(sdata, freq->m / div);
386 else
387 return -EINVAL;
388 }
389 }
390
391
392 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
393 struct iw_request_info *info,
394 struct iw_freq *freq, char *extra)
395 {
396 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
397
398 freq->m = local->hw.conf.channel->center_freq;
399 freq->e = 6;
400
401 return 0;
402 }
403
404
405 static int ieee80211_ioctl_siwessid(struct net_device *dev,
406 struct iw_request_info *info,
407 struct iw_point *data, char *ssid)
408 {
409 struct ieee80211_sub_if_data *sdata;
410 size_t len = data->length;
411
412 /* iwconfig uses nul termination in SSID.. */
413 if (len > 0 && ssid[len - 1] == '\0')
414 len--;
415
416 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
417 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
418 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
419 int ret;
420 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
421 if (len > IEEE80211_MAX_SSID_LEN)
422 return -EINVAL;
423 memcpy(sdata->u.sta.ssid, ssid, len);
424 sdata->u.sta.ssid_len = len;
425 return 0;
426 }
427 if (data->flags)
428 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
429 else
430 sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
431 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
432 if (ret)
433 return ret;
434 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
435 return 0;
436 }
437
438 if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
439 memcpy(sdata->u.ap.ssid, ssid, len);
440 memset(sdata->u.ap.ssid + len, 0,
441 IEEE80211_MAX_SSID_LEN - len);
442 sdata->u.ap.ssid_len = len;
443 return ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
444 }
445 return -EOPNOTSUPP;
446 }
447
448
449 static int ieee80211_ioctl_giwessid(struct net_device *dev,
450 struct iw_request_info *info,
451 struct iw_point *data, char *ssid)
452 {
453 size_t len;
454
455 struct ieee80211_sub_if_data *sdata;
456 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
457 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
458 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
459 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
460 if (res == 0) {
461 data->length = len;
462 data->flags = 1;
463 } else
464 data->flags = 0;
465 return res;
466 }
467
468 if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
469 len = sdata->u.ap.ssid_len;
470 if (len > IW_ESSID_MAX_SIZE)
471 len = IW_ESSID_MAX_SIZE;
472 memcpy(ssid, sdata->u.ap.ssid, len);
473 data->length = len;
474 data->flags = 1;
475 return 0;
476 }
477 return -EOPNOTSUPP;
478 }
479
480
481 static int ieee80211_ioctl_siwap(struct net_device *dev,
482 struct iw_request_info *info,
483 struct sockaddr *ap_addr, char *extra)
484 {
485 struct ieee80211_sub_if_data *sdata;
486
487 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
488 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
489 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
490 int ret;
491 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
492 memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
493 ETH_ALEN);
494 return 0;
495 }
496 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
497 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
498 IEEE80211_STA_AUTO_CHANNEL_SEL;
499 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
500 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
501 else
502 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
503 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
504 if (ret)
505 return ret;
506 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
507 return 0;
508 } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
509 /*
510 * If it is necessary to update the WDS peer address
511 * while the interface is running, then we need to do
512 * more work here, namely if it is running we need to
513 * add a new and remove the old STA entry, this is
514 * normally handled by _open() and _stop().
515 */
516 if (netif_running(dev))
517 return -EBUSY;
518
519 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
520 ETH_ALEN);
521
522 return 0;
523 }
524
525 return -EOPNOTSUPP;
526 }
527
528
529 static int ieee80211_ioctl_giwap(struct net_device *dev,
530 struct iw_request_info *info,
531 struct sockaddr *ap_addr, char *extra)
532 {
533 struct ieee80211_sub_if_data *sdata;
534
535 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
536 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
537 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
538 if (sdata->u.sta.state == IEEE80211_ASSOCIATED ||
539 sdata->u.sta.state == IEEE80211_IBSS_JOINED) {
540 ap_addr->sa_family = ARPHRD_ETHER;
541 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
542 return 0;
543 } else {
544 memset(&ap_addr->sa_data, 0, ETH_ALEN);
545 return 0;
546 }
547 } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
548 ap_addr->sa_family = ARPHRD_ETHER;
549 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
550 return 0;
551 }
552
553 return -EOPNOTSUPP;
554 }
555
556
557 static int ieee80211_ioctl_siwscan(struct net_device *dev,
558 struct iw_request_info *info,
559 union iwreq_data *wrqu, char *extra)
560 {
561 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
562 struct iw_scan_req *req = NULL;
563 u8 *ssid = NULL;
564 size_t ssid_len = 0;
565
566 if (!netif_running(dev))
567 return -ENETDOWN;
568
569 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
570 sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
571 sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
572 sdata->vif.type != IEEE80211_IF_TYPE_AP)
573 return -EOPNOTSUPP;
574
575 /* if SSID was specified explicitly then use that */
576 if (wrqu->data.length == sizeof(struct iw_scan_req) &&
577 wrqu->data.flags & IW_SCAN_THIS_ESSID) {
578 req = (struct iw_scan_req *)extra;
579 ssid = req->essid;
580 ssid_len = req->essid_len;
581 }
582
583 return ieee80211_sta_req_scan(sdata, ssid, ssid_len);
584 }
585
586
587 static int ieee80211_ioctl_giwscan(struct net_device *dev,
588 struct iw_request_info *info,
589 struct iw_point *data, char *extra)
590 {
591 int res;
592 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
593 struct ieee80211_sub_if_data *sdata;
594
595 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
596
597 if (local->sta_sw_scanning || local->sta_hw_scanning)
598 return -EAGAIN;
599
600 res = ieee80211_sta_scan_results(local, info, extra, data->length);
601 if (res >= 0) {
602 data->length = res;
603 return 0;
604 }
605 data->length = 0;
606 return res;
607 }
608
609
610 static int ieee80211_ioctl_siwrate(struct net_device *dev,
611 struct iw_request_info *info,
612 struct iw_param *rate, char *extra)
613 {
614 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
615 int i, err = -EINVAL;
616 u32 target_rate = rate->value / 100000;
617 struct ieee80211_sub_if_data *sdata;
618 struct ieee80211_supported_band *sband;
619
620 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
621
622 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
623
624 /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
625 * target_rate = X, rate->fixed = 1 means only rate X
626 * target_rate = X, rate->fixed = 0 means all rates <= X */
627 sdata->max_ratectrl_rateidx = -1;
628 sdata->force_unicast_rateidx = -1;
629 if (rate->value < 0)
630 return 0;
631
632 for (i=0; i< sband->n_bitrates; i++) {
633 struct ieee80211_rate *brate = &sband->bitrates[i];
634 int this_rate = brate->bitrate;
635
636 if (target_rate == this_rate) {
637 sdata->max_ratectrl_rateidx = i;
638 if (rate->fixed)
639 sdata->force_unicast_rateidx = i;
640 err = 0;
641 break;
642 }
643 }
644 return err;
645 }
646
647 static int ieee80211_ioctl_giwrate(struct net_device *dev,
648 struct iw_request_info *info,
649 struct iw_param *rate, char *extra)
650 {
651 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
652 struct sta_info *sta;
653 struct ieee80211_sub_if_data *sdata;
654 struct ieee80211_supported_band *sband;
655
656 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
657
658 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
659 return -EOPNOTSUPP;
660
661 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
662
663 rcu_read_lock();
664
665 sta = sta_info_get(local, sdata->u.sta.bssid);
666
667 if (sta && sta->txrate_idx < sband->n_bitrates)
668 rate->value = sband->bitrates[sta->txrate_idx].bitrate;
669 else
670 rate->value = 0;
671
672 rcu_read_unlock();
673
674 if (!sta)
675 return -ENODEV;
676
677 rate->value *= 100000;
678
679 return 0;
680 }
681
682 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
683 struct iw_request_info *info,
684 union iwreq_data *data, char *extra)
685 {
686 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
687 bool need_reconfig = 0;
688 int new_power_level;
689
690 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
691 return -EINVAL;
692 if (data->txpower.flags & IW_TXPOW_RANGE)
693 return -EINVAL;
694
695 if (data->txpower.fixed) {
696 new_power_level = data->txpower.value;
697 } else {
698 /*
699 * Automatic power level. Use maximum power for the current
700 * channel. Should be part of rate control.
701 */
702 struct ieee80211_channel* chan = local->hw.conf.channel;
703 if (!chan)
704 return -EINVAL;
705
706 new_power_level = chan->max_power;
707 }
708
709 if (local->hw.conf.power_level != new_power_level) {
710 local->hw.conf.power_level = new_power_level;
711 need_reconfig = 1;
712 }
713
714 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
715 local->hw.conf.radio_enabled = !(data->txpower.disabled);
716 need_reconfig = 1;
717 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
718 }
719
720 if (need_reconfig) {
721 ieee80211_hw_config(local);
722 /* The return value of hw_config is not of big interest here,
723 * as it doesn't say that it failed because of _this_ config
724 * change or something else. Ignore it. */
725 }
726
727 return 0;
728 }
729
730 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
731 struct iw_request_info *info,
732 union iwreq_data *data, char *extra)
733 {
734 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
735
736 data->txpower.fixed = 1;
737 data->txpower.disabled = !(local->hw.conf.radio_enabled);
738 data->txpower.value = local->hw.conf.power_level;
739 data->txpower.flags = IW_TXPOW_DBM;
740
741 return 0;
742 }
743
744 static int ieee80211_ioctl_siwrts(struct net_device *dev,
745 struct iw_request_info *info,
746 struct iw_param *rts, char *extra)
747 {
748 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
749
750 if (rts->disabled)
751 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
752 else if (!rts->fixed)
753 /* if the rts value is not fixed, then take default */
754 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
755 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
756 return -EINVAL;
757 else
758 local->rts_threshold = rts->value;
759
760 /* If the wlan card performs RTS/CTS in hardware/firmware,
761 * configure it here */
762
763 if (local->ops->set_rts_threshold)
764 local->ops->set_rts_threshold(local_to_hw(local),
765 local->rts_threshold);
766
767 return 0;
768 }
769
770 static int ieee80211_ioctl_giwrts(struct net_device *dev,
771 struct iw_request_info *info,
772 struct iw_param *rts, char *extra)
773 {
774 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
775
776 rts->value = local->rts_threshold;
777 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
778 rts->fixed = 1;
779
780 return 0;
781 }
782
783
784 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
785 struct iw_request_info *info,
786 struct iw_param *frag, char *extra)
787 {
788 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
789
790 if (frag->disabled)
791 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
792 else if (!frag->fixed)
793 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
794 else if (frag->value < 256 ||
795 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
796 return -EINVAL;
797 else {
798 /* Fragment length must be even, so strip LSB. */
799 local->fragmentation_threshold = frag->value & ~0x1;
800 }
801
802 /* If the wlan card performs fragmentation in hardware/firmware,
803 * configure it here */
804
805 if (local->ops->set_frag_threshold)
806 local->ops->set_frag_threshold(
807 local_to_hw(local),
808 local->fragmentation_threshold);
809
810 return 0;
811 }
812
813 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
814 struct iw_request_info *info,
815 struct iw_param *frag, char *extra)
816 {
817 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
818
819 frag->value = local->fragmentation_threshold;
820 frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
821 frag->fixed = 1;
822
823 return 0;
824 }
825
826
827 static int ieee80211_ioctl_siwretry(struct net_device *dev,
828 struct iw_request_info *info,
829 struct iw_param *retry, char *extra)
830 {
831 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
832
833 if (retry->disabled ||
834 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
835 return -EINVAL;
836
837 if (retry->flags & IW_RETRY_MAX)
838 local->long_retry_limit = retry->value;
839 else if (retry->flags & IW_RETRY_MIN)
840 local->short_retry_limit = retry->value;
841 else {
842 local->long_retry_limit = retry->value;
843 local->short_retry_limit = retry->value;
844 }
845
846 if (local->ops->set_retry_limit) {
847 return local->ops->set_retry_limit(
848 local_to_hw(local),
849 local->short_retry_limit,
850 local->long_retry_limit);
851 }
852
853 return 0;
854 }
855
856
857 static int ieee80211_ioctl_giwretry(struct net_device *dev,
858 struct iw_request_info *info,
859 struct iw_param *retry, char *extra)
860 {
861 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
862
863 retry->disabled = 0;
864 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
865 /* first return min value, iwconfig will ask max value
866 * later if needed */
867 retry->flags |= IW_RETRY_LIMIT;
868 retry->value = local->short_retry_limit;
869 if (local->long_retry_limit != local->short_retry_limit)
870 retry->flags |= IW_RETRY_MIN;
871 return 0;
872 }
873 if (retry->flags & IW_RETRY_MAX) {
874 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
875 retry->value = local->long_retry_limit;
876 }
877
878 return 0;
879 }
880
881 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
882 struct iw_request_info *info,
883 struct iw_point *data, char *extra)
884 {
885 struct ieee80211_sub_if_data *sdata;
886 struct iw_mlme *mlme = (struct iw_mlme *) extra;
887
888 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
889 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
890 sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
891 return -EINVAL;
892
893 switch (mlme->cmd) {
894 case IW_MLME_DEAUTH:
895 /* TODO: mlme->addr.sa_data */
896 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
897 case IW_MLME_DISASSOC:
898 /* TODO: mlme->addr.sa_data */
899 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
900 default:
901 return -EOPNOTSUPP;
902 }
903 }
904
905
906 static int ieee80211_ioctl_siwencode(struct net_device *dev,
907 struct iw_request_info *info,
908 struct iw_point *erq, char *keybuf)
909 {
910 struct ieee80211_sub_if_data *sdata;
911 int idx, i, alg = ALG_WEP;
912 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
913 int remove = 0;
914
915 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
916
917 idx = erq->flags & IW_ENCODE_INDEX;
918 if (idx == 0) {
919 if (sdata->default_key)
920 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
921 if (sdata->default_key == sdata->keys[i]) {
922 idx = i;
923 break;
924 }
925 }
926 } else if (idx < 1 || idx > 4)
927 return -EINVAL;
928 else
929 idx--;
930
931 if (erq->flags & IW_ENCODE_DISABLED)
932 remove = 1;
933 else if (erq->length == 0) {
934 /* No key data - just set the default TX key index */
935 ieee80211_set_default_key(sdata, idx);
936 return 0;
937 }
938
939 return ieee80211_set_encryption(
940 sdata, bcaddr,
941 idx, alg, remove,
942 !sdata->default_key,
943 keybuf, erq->length);
944 }
945
946
947 static int ieee80211_ioctl_giwencode(struct net_device *dev,
948 struct iw_request_info *info,
949 struct iw_point *erq, char *key)
950 {
951 struct ieee80211_sub_if_data *sdata;
952 int idx, i;
953
954 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
955
956 idx = erq->flags & IW_ENCODE_INDEX;
957 if (idx < 1 || idx > 4) {
958 idx = -1;
959 if (!sdata->default_key)
960 idx = 0;
961 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
962 if (sdata->default_key == sdata->keys[i]) {
963 idx = i;
964 break;
965 }
966 }
967 if (idx < 0)
968 return -EINVAL;
969 } else
970 idx--;
971
972 erq->flags = idx + 1;
973
974 if (!sdata->keys[idx]) {
975 erq->length = 0;
976 erq->flags |= IW_ENCODE_DISABLED;
977 return 0;
978 }
979
980 memcpy(key, sdata->keys[idx]->conf.key,
981 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
982 erq->length = sdata->keys[idx]->conf.keylen;
983 erq->flags |= IW_ENCODE_ENABLED;
984
985 if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
986 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
987 switch (ifsta->auth_alg) {
988 case WLAN_AUTH_OPEN:
989 case WLAN_AUTH_LEAP:
990 erq->flags |= IW_ENCODE_OPEN;
991 break;
992 case WLAN_AUTH_SHARED_KEY:
993 erq->flags |= IW_ENCODE_RESTRICTED;
994 break;
995 }
996 }
997
998 return 0;
999 }
1000
1001 static int ieee80211_ioctl_siwpower(struct net_device *dev,
1002 struct iw_request_info *info,
1003 struct iw_param *wrq,
1004 char *extra)
1005 {
1006 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1007 struct ieee80211_conf *conf = &local->hw.conf;
1008
1009 if (wrq->disabled) {
1010 conf->flags &= ~IEEE80211_CONF_PS;
1011 return ieee80211_hw_config(local);
1012 }
1013
1014 switch (wrq->flags & IW_POWER_MODE) {
1015 case IW_POWER_ON: /* If not specified */
1016 case IW_POWER_MODE: /* If set all mask */
1017 case IW_POWER_ALL_R: /* If explicitely state all */
1018 conf->flags |= IEEE80211_CONF_PS;
1019 break;
1020 default: /* Otherwise we don't support it */
1021 return -EINVAL;
1022 }
1023
1024 return ieee80211_hw_config(local);
1025 }
1026
1027 static int ieee80211_ioctl_giwpower(struct net_device *dev,
1028 struct iw_request_info *info,
1029 union iwreq_data *wrqu,
1030 char *extra)
1031 {
1032 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1033 struct ieee80211_conf *conf = &local->hw.conf;
1034
1035 wrqu->power.disabled = !(conf->flags & IEEE80211_CONF_PS);
1036
1037 return 0;
1038 }
1039
1040 static int ieee80211_ioctl_siwauth(struct net_device *dev,
1041 struct iw_request_info *info,
1042 struct iw_param *data, char *extra)
1043 {
1044 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1045 int ret = 0;
1046
1047 switch (data->flags & IW_AUTH_INDEX) {
1048 case IW_AUTH_WPA_VERSION:
1049 case IW_AUTH_CIPHER_PAIRWISE:
1050 case IW_AUTH_CIPHER_GROUP:
1051 case IW_AUTH_WPA_ENABLED:
1052 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1053 case IW_AUTH_KEY_MGMT:
1054 break;
1055 case IW_AUTH_DROP_UNENCRYPTED:
1056 sdata->drop_unencrypted = !!data->value;
1057 break;
1058 case IW_AUTH_PRIVACY_INVOKED:
1059 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
1060 ret = -EINVAL;
1061 else {
1062 sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
1063 /*
1064 * Privacy invoked by wpa_supplicant, store the
1065 * value and allow associating to a protected
1066 * network without having a key up front.
1067 */
1068 if (data->value)
1069 sdata->u.sta.flags |=
1070 IEEE80211_STA_PRIVACY_INVOKED;
1071 }
1072 break;
1073 case IW_AUTH_80211_AUTH_ALG:
1074 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1075 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1076 sdata->u.sta.auth_algs = data->value;
1077 else
1078 ret = -EOPNOTSUPP;
1079 break;
1080 default:
1081 ret = -EOPNOTSUPP;
1082 break;
1083 }
1084 return ret;
1085 }
1086
1087 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1088 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
1089 {
1090 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1091 struct iw_statistics *wstats = &local->wstats;
1092 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1093 struct sta_info *sta = NULL;
1094
1095 rcu_read_lock();
1096
1097 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1098 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1099 sta = sta_info_get(local, sdata->u.sta.bssid);
1100 if (!sta) {
1101 wstats->discard.fragment = 0;
1102 wstats->discard.misc = 0;
1103 wstats->qual.qual = 0;
1104 wstats->qual.level = 0;
1105 wstats->qual.noise = 0;
1106 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1107 } else {
1108 wstats->qual.level = sta->last_signal;
1109 wstats->qual.qual = sta->last_qual;
1110 wstats->qual.noise = sta->last_noise;
1111 wstats->qual.updated = local->wstats_flags;
1112 }
1113
1114 rcu_read_unlock();
1115
1116 return wstats;
1117 }
1118
1119 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1120 struct iw_request_info *info,
1121 struct iw_param *data, char *extra)
1122 {
1123 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1124 int ret = 0;
1125
1126 switch (data->flags & IW_AUTH_INDEX) {
1127 case IW_AUTH_80211_AUTH_ALG:
1128 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1129 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1130 data->value = sdata->u.sta.auth_algs;
1131 else
1132 ret = -EOPNOTSUPP;
1133 break;
1134 default:
1135 ret = -EOPNOTSUPP;
1136 break;
1137 }
1138 return ret;
1139 }
1140
1141
1142 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1143 struct iw_request_info *info,
1144 struct iw_point *erq, char *extra)
1145 {
1146 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1147 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1148 int uninitialized_var(alg), idx, i, remove = 0;
1149
1150 switch (ext->alg) {
1151 case IW_ENCODE_ALG_NONE:
1152 remove = 1;
1153 break;
1154 case IW_ENCODE_ALG_WEP:
1155 alg = ALG_WEP;
1156 break;
1157 case IW_ENCODE_ALG_TKIP:
1158 alg = ALG_TKIP;
1159 break;
1160 case IW_ENCODE_ALG_CCMP:
1161 alg = ALG_CCMP;
1162 break;
1163 default:
1164 return -EOPNOTSUPP;
1165 }
1166
1167 if (erq->flags & IW_ENCODE_DISABLED)
1168 remove = 1;
1169
1170 idx = erq->flags & IW_ENCODE_INDEX;
1171 if (idx < 1 || idx > 4) {
1172 idx = -1;
1173 if (!sdata->default_key)
1174 idx = 0;
1175 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1176 if (sdata->default_key == sdata->keys[i]) {
1177 idx = i;
1178 break;
1179 }
1180 }
1181 if (idx < 0)
1182 return -EINVAL;
1183 } else
1184 idx--;
1185
1186 return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1187 remove,
1188 ext->ext_flags &
1189 IW_ENCODE_EXT_SET_TX_KEY,
1190 ext->key, ext->key_len);
1191 }
1192
1193
1194 /* Structures to export the Wireless Handlers */
1195
1196 static const iw_handler ieee80211_handler[] =
1197 {
1198 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1199 (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
1200 (iw_handler) NULL, /* SIOCSIWNWID */
1201 (iw_handler) NULL, /* SIOCGIWNWID */
1202 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1203 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1204 (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
1205 (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
1206 (iw_handler) NULL, /* SIOCSIWSENS */
1207 (iw_handler) NULL, /* SIOCGIWSENS */
1208 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1209 (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
1210 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1211 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1212 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1213 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1214 (iw_handler) NULL, /* SIOCSIWSPY */
1215 (iw_handler) NULL, /* SIOCGIWSPY */
1216 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1217 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1218 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1219 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1220 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1221 (iw_handler) NULL, /* SIOCGIWAPLIST */
1222 (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
1223 (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
1224 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1225 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1226 (iw_handler) NULL, /* SIOCSIWNICKN */
1227 (iw_handler) NULL, /* SIOCGIWNICKN */
1228 (iw_handler) NULL, /* -- hole -- */
1229 (iw_handler) NULL, /* -- hole -- */
1230 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1231 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1232 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1233 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1234 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1235 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1236 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1237 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1238 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1239 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1240 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1241 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1242 (iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */
1243 (iw_handler) ieee80211_ioctl_giwpower, /* SIOCGIWPOWER */
1244 (iw_handler) NULL, /* -- hole -- */
1245 (iw_handler) NULL, /* -- hole -- */
1246 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1247 (iw_handler) NULL, /* SIOCGIWGENIE */
1248 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1249 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1250 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1251 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1252 (iw_handler) NULL, /* SIOCSIWPMKSA */
1253 (iw_handler) NULL, /* -- hole -- */
1254 };
1255
1256 const struct iw_handler_def ieee80211_iw_handler_def =
1257 {
1258 .num_standard = ARRAY_SIZE(ieee80211_handler),
1259 .standard = (iw_handler *) ieee80211_handler,
1260 .get_wireless_stats = ieee80211_get_wireless_stats,
1261 };
Linux kernel - Deliverables
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