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mac80211: Remove local->scan_flags
[deliverable/linux.git] / net / mac80211 / ieee80211_ioctl.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 "ieee80211_rate.h"
25 #include "wpa.h"
26 #include "aes_ccm.h"
27
28
29 static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
30 int idx, int alg, int remove,
31 int set_tx_key, const u8 *_key,
32 size_t key_len)
33 {
34 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
35 int ret = 0;
36 struct sta_info *sta;
37 struct ieee80211_key *key;
38 struct ieee80211_sub_if_data *sdata;
39
40 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
41
42 if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
43 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
44 dev->name, idx);
45 return -EINVAL;
46 }
47
48 if (is_broadcast_ether_addr(sta_addr)) {
49 sta = NULL;
50 key = sdata->keys[idx];
51 } else {
52 set_tx_key = 0;
53 /*
54 * According to the standard, the key index of a pairwise
55 * key must be zero. However, some AP are broken when it
56 * comes to WEP key indices, so we work around this.
57 */
58 if (idx != 0 && alg != ALG_WEP) {
59 printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
60 "individual key\n", dev->name);
61 return -EINVAL;
62 }
63
64 sta = sta_info_get(local, sta_addr);
65 if (!sta) {
66 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
67 DECLARE_MAC_BUF(mac);
68 printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
69 "%s\n",
70 dev->name, print_mac(mac, sta_addr));
71 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
72
73 return -ENOENT;
74 }
75
76 key = sta->key;
77 }
78
79 if (remove) {
80 ieee80211_key_free(key);
81 key = NULL;
82 } else {
83 /*
84 * Automatically frees any old key if present.
85 */
86 key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
87 if (!key) {
88 ret = -ENOMEM;
89 goto err_out;
90 }
91 }
92
93 if (set_tx_key || (!sta && !sdata->default_key && key))
94 ieee80211_set_default_key(sdata, idx);
95
96 ret = 0;
97 err_out:
98 if (sta)
99 sta_info_put(sta);
100 return ret;
101 }
102
103 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
104 struct iw_request_info *info,
105 struct iw_point *data, char *extra)
106 {
107 struct ieee80211_sub_if_data *sdata;
108
109 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
110
111 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
112 return -EOPNOTSUPP;
113
114 if (sdata->type == IEEE80211_IF_TYPE_STA ||
115 sdata->type == IEEE80211_IF_TYPE_IBSS) {
116 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
117 if (ret)
118 return ret;
119 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
120 ieee80211_sta_req_auth(dev, &sdata->u.sta);
121 return 0;
122 }
123
124 return -EOPNOTSUPP;
125 }
126
127 static int ieee80211_ioctl_giwname(struct net_device *dev,
128 struct iw_request_info *info,
129 char *name, char *extra)
130 {
131 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
132
133 switch (local->hw.conf.phymode) {
134 case MODE_IEEE80211A:
135 strcpy(name, "IEEE 802.11a");
136 break;
137 case MODE_IEEE80211B:
138 strcpy(name, "IEEE 802.11b");
139 break;
140 case MODE_IEEE80211G:
141 strcpy(name, "IEEE 802.11g");
142 break;
143 default:
144 strcpy(name, "IEEE 802.11");
145 break;
146 }
147
148 return 0;
149 }
150
151
152 static int ieee80211_ioctl_giwrange(struct net_device *dev,
153 struct iw_request_info *info,
154 struct iw_point *data, char *extra)
155 {
156 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
157 struct iw_range *range = (struct iw_range *) extra;
158 struct ieee80211_hw_mode *mode = NULL;
159 int c = 0;
160
161 data->length = sizeof(struct iw_range);
162 memset(range, 0, sizeof(struct iw_range));
163
164 range->we_version_compiled = WIRELESS_EXT;
165 range->we_version_source = 21;
166 range->retry_capa = IW_RETRY_LIMIT;
167 range->retry_flags = IW_RETRY_LIMIT;
168 range->min_retry = 0;
169 range->max_retry = 255;
170 range->min_rts = 0;
171 range->max_rts = 2347;
172 range->min_frag = 256;
173 range->max_frag = 2346;
174
175 range->encoding_size[0] = 5;
176 range->encoding_size[1] = 13;
177 range->num_encoding_sizes = 2;
178 range->max_encoding_tokens = NUM_DEFAULT_KEYS;
179
180 range->max_qual.qual = local->hw.max_signal;
181 range->max_qual.level = local->hw.max_rssi;
182 range->max_qual.noise = local->hw.max_noise;
183 range->max_qual.updated = local->wstats_flags;
184
185 range->avg_qual.qual = local->hw.max_signal/2;
186 range->avg_qual.level = 0;
187 range->avg_qual.noise = 0;
188 range->avg_qual.updated = local->wstats_flags;
189
190 range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
191 IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
192
193 list_for_each_entry(mode, &local->modes_list, list) {
194 int i = 0;
195
196 if (!(local->enabled_modes & (1 << mode->mode)) ||
197 (local->hw_modes & local->enabled_modes &
198 (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
199 continue;
200
201 while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
202 struct ieee80211_channel *chan = &mode->channels[i];
203
204 if (chan->flag & IEEE80211_CHAN_W_SCAN) {
205 range->freq[c].i = chan->chan;
206 range->freq[c].m = chan->freq * 100000;
207 range->freq[c].e = 1;
208 c++;
209 }
210 i++;
211 }
212 }
213 range->num_channels = c;
214 range->num_frequency = c;
215
216 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
217 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
218 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
219 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
220
221 return 0;
222 }
223
224
225 static int ieee80211_ioctl_siwmode(struct net_device *dev,
226 struct iw_request_info *info,
227 __u32 *mode, char *extra)
228 {
229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
230 int type;
231
232 if (sdata->type == IEEE80211_IF_TYPE_VLAN)
233 return -EOPNOTSUPP;
234
235 switch (*mode) {
236 case IW_MODE_INFRA:
237 type = IEEE80211_IF_TYPE_STA;
238 break;
239 case IW_MODE_ADHOC:
240 type = IEEE80211_IF_TYPE_IBSS;
241 break;
242 case IW_MODE_MONITOR:
243 type = IEEE80211_IF_TYPE_MNTR;
244 break;
245 default:
246 return -EINVAL;
247 }
248
249 if (type == sdata->type)
250 return 0;
251 if (netif_running(dev))
252 return -EBUSY;
253
254 ieee80211_if_reinit(dev);
255 ieee80211_if_set_type(dev, type);
256
257 return 0;
258 }
259
260
261 static int ieee80211_ioctl_giwmode(struct net_device *dev,
262 struct iw_request_info *info,
263 __u32 *mode, char *extra)
264 {
265 struct ieee80211_sub_if_data *sdata;
266
267 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
268 switch (sdata->type) {
269 case IEEE80211_IF_TYPE_AP:
270 *mode = IW_MODE_MASTER;
271 break;
272 case IEEE80211_IF_TYPE_STA:
273 *mode = IW_MODE_INFRA;
274 break;
275 case IEEE80211_IF_TYPE_IBSS:
276 *mode = IW_MODE_ADHOC;
277 break;
278 case IEEE80211_IF_TYPE_MNTR:
279 *mode = IW_MODE_MONITOR;
280 break;
281 case IEEE80211_IF_TYPE_WDS:
282 *mode = IW_MODE_REPEAT;
283 break;
284 case IEEE80211_IF_TYPE_VLAN:
285 *mode = IW_MODE_SECOND; /* FIXME */
286 break;
287 default:
288 *mode = IW_MODE_AUTO;
289 break;
290 }
291 return 0;
292 }
293
294 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
295 {
296 struct ieee80211_hw_mode *mode;
297 int c, set = 0;
298 int ret = -EINVAL;
299
300 list_for_each_entry(mode, &local->modes_list, list) {
301 if (!(local->enabled_modes & (1 << mode->mode)))
302 continue;
303 for (c = 0; c < mode->num_channels; c++) {
304 struct ieee80211_channel *chan = &mode->channels[c];
305 if (chan->flag & IEEE80211_CHAN_W_SCAN &&
306 ((chan->chan == channel) || (chan->freq == freq))) {
307 local->oper_channel = chan;
308 local->oper_hw_mode = mode;
309 set = 1;
310 break;
311 }
312 }
313 if (set)
314 break;
315 }
316
317 if (set) {
318 if (local->sta_scanning)
319 ret = 0;
320 else
321 ret = ieee80211_hw_config(local);
322
323 rate_control_clear(local);
324 }
325
326 return ret;
327 }
328
329 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
330 struct iw_request_info *info,
331 struct iw_freq *freq, char *extra)
332 {
333 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
334 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
335
336 if (sdata->type == IEEE80211_IF_TYPE_STA)
337 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
338
339 /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
340 if (freq->e == 0) {
341 if (freq->m < 0) {
342 if (sdata->type == IEEE80211_IF_TYPE_STA)
343 sdata->u.sta.flags |=
344 IEEE80211_STA_AUTO_CHANNEL_SEL;
345 return 0;
346 } else
347 return ieee80211_set_channel(local, freq->m, -1);
348 } else {
349 int i, div = 1000000;
350 for (i = 0; i < freq->e; i++)
351 div /= 10;
352 if (div > 0)
353 return ieee80211_set_channel(local, -1, freq->m / div);
354 else
355 return -EINVAL;
356 }
357 }
358
359
360 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
361 struct iw_request_info *info,
362 struct iw_freq *freq, char *extra)
363 {
364 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
365
366 /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
367 * driver for the current channel with firmware-based management */
368
369 freq->m = local->hw.conf.freq;
370 freq->e = 6;
371
372 return 0;
373 }
374
375
376 static int ieee80211_ioctl_siwessid(struct net_device *dev,
377 struct iw_request_info *info,
378 struct iw_point *data, char *ssid)
379 {
380 struct ieee80211_sub_if_data *sdata;
381 size_t len = data->length;
382
383 /* iwconfig uses nul termination in SSID.. */
384 if (len > 0 && ssid[len - 1] == '\0')
385 len--;
386
387 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
388 if (sdata->type == IEEE80211_IF_TYPE_STA ||
389 sdata->type == IEEE80211_IF_TYPE_IBSS) {
390 int ret;
391 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
392 if (len > IEEE80211_MAX_SSID_LEN)
393 return -EINVAL;
394 memcpy(sdata->u.sta.ssid, ssid, len);
395 sdata->u.sta.ssid_len = len;
396 return 0;
397 }
398 if (data->flags)
399 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
400 else
401 sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
402 ret = ieee80211_sta_set_ssid(dev, ssid, len);
403 if (ret)
404 return ret;
405 ieee80211_sta_req_auth(dev, &sdata->u.sta);
406 return 0;
407 }
408
409 if (sdata->type == IEEE80211_IF_TYPE_AP) {
410 memcpy(sdata->u.ap.ssid, ssid, len);
411 memset(sdata->u.ap.ssid + len, 0,
412 IEEE80211_MAX_SSID_LEN - len);
413 sdata->u.ap.ssid_len = len;
414 return ieee80211_if_config(dev);
415 }
416 return -EOPNOTSUPP;
417 }
418
419
420 static int ieee80211_ioctl_giwessid(struct net_device *dev,
421 struct iw_request_info *info,
422 struct iw_point *data, char *ssid)
423 {
424 size_t len;
425
426 struct ieee80211_sub_if_data *sdata;
427 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
428 if (sdata->type == IEEE80211_IF_TYPE_STA ||
429 sdata->type == IEEE80211_IF_TYPE_IBSS) {
430 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
431 if (res == 0) {
432 data->length = len;
433 data->flags = 1;
434 } else
435 data->flags = 0;
436 return res;
437 }
438
439 if (sdata->type == IEEE80211_IF_TYPE_AP) {
440 len = sdata->u.ap.ssid_len;
441 if (len > IW_ESSID_MAX_SIZE)
442 len = IW_ESSID_MAX_SIZE;
443 memcpy(ssid, sdata->u.ap.ssid, len);
444 data->length = len;
445 data->flags = 1;
446 return 0;
447 }
448 return -EOPNOTSUPP;
449 }
450
451
452 static int ieee80211_ioctl_siwap(struct net_device *dev,
453 struct iw_request_info *info,
454 struct sockaddr *ap_addr, char *extra)
455 {
456 struct ieee80211_sub_if_data *sdata;
457
458 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
459 if (sdata->type == IEEE80211_IF_TYPE_STA ||
460 sdata->type == IEEE80211_IF_TYPE_IBSS) {
461 int ret;
462 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
463 memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
464 ETH_ALEN);
465 return 0;
466 }
467 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
468 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
469 IEEE80211_STA_AUTO_CHANNEL_SEL;
470 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
471 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
472 else
473 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
474 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
475 if (ret)
476 return ret;
477 ieee80211_sta_req_auth(dev, &sdata->u.sta);
478 return 0;
479 } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
480 if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
481 ETH_ALEN) == 0)
482 return 0;
483 return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
484 }
485
486 return -EOPNOTSUPP;
487 }
488
489
490 static int ieee80211_ioctl_giwap(struct net_device *dev,
491 struct iw_request_info *info,
492 struct sockaddr *ap_addr, char *extra)
493 {
494 struct ieee80211_sub_if_data *sdata;
495
496 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
497 if (sdata->type == IEEE80211_IF_TYPE_STA ||
498 sdata->type == IEEE80211_IF_TYPE_IBSS) {
499 ap_addr->sa_family = ARPHRD_ETHER;
500 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
501 return 0;
502 } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
503 ap_addr->sa_family = ARPHRD_ETHER;
504 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
505 return 0;
506 }
507
508 return -EOPNOTSUPP;
509 }
510
511
512 static int ieee80211_ioctl_siwscan(struct net_device *dev,
513 struct iw_request_info *info,
514 union iwreq_data *wrqu, char *extra)
515 {
516 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
517 struct iw_scan_req *req = NULL;
518 u8 *ssid = NULL;
519 size_t ssid_len = 0;
520
521 if (!netif_running(dev))
522 return -ENETDOWN;
523
524 if (sdata->type != IEEE80211_IF_TYPE_STA &&
525 sdata->type != IEEE80211_IF_TYPE_IBSS &&
526 sdata->type != IEEE80211_IF_TYPE_AP) {
527 return -EOPNOTSUPP;
528 }
529
530 /* if SSID was specified explicitly then use that */
531 if (wrqu->data.length == sizeof(struct iw_scan_req) &&
532 wrqu->data.flags & IW_SCAN_THIS_ESSID) {
533 req = (struct iw_scan_req *)extra;
534 ssid = req->essid;
535 ssid_len = req->essid_len;
536 }
537
538 return ieee80211_sta_req_scan(dev, ssid, ssid_len);
539 }
540
541
542 static int ieee80211_ioctl_giwscan(struct net_device *dev,
543 struct iw_request_info *info,
544 struct iw_point *data, char *extra)
545 {
546 int res;
547 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
548 if (local->sta_scanning)
549 return -EAGAIN;
550 res = ieee80211_sta_scan_results(dev, extra, data->length);
551 if (res >= 0) {
552 data->length = res;
553 return 0;
554 }
555 data->length = 0;
556 return res;
557 }
558
559
560 static int ieee80211_ioctl_siwrate(struct net_device *dev,
561 struct iw_request_info *info,
562 struct iw_param *rate, char *extra)
563 {
564 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
565 struct ieee80211_hw_mode *mode;
566 int i;
567 u32 target_rate = rate->value / 100000;
568 struct ieee80211_sub_if_data *sdata;
569
570 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
571 if (!sdata->bss)
572 return -ENODEV;
573 mode = local->oper_hw_mode;
574 /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
575 * target_rate = X, rate->fixed = 1 means only rate X
576 * target_rate = X, rate->fixed = 0 means all rates <= X */
577 sdata->bss->max_ratectrl_rateidx = -1;
578 sdata->bss->force_unicast_rateidx = -1;
579 if (rate->value < 0)
580 return 0;
581 for (i=0; i < mode->num_rates; i++) {
582 struct ieee80211_rate *rates = &mode->rates[i];
583 int this_rate = rates->rate;
584
585 if (target_rate == this_rate) {
586 sdata->bss->max_ratectrl_rateidx = i;
587 if (rate->fixed)
588 sdata->bss->force_unicast_rateidx = i;
589 return 0;
590 }
591 }
592 return -EINVAL;
593 }
594
595 static int ieee80211_ioctl_giwrate(struct net_device *dev,
596 struct iw_request_info *info,
597 struct iw_param *rate, char *extra)
598 {
599 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
600 struct sta_info *sta;
601 struct ieee80211_sub_if_data *sdata;
602
603 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
604 if (sdata->type == IEEE80211_IF_TYPE_STA)
605 sta = sta_info_get(local, sdata->u.sta.bssid);
606 else
607 return -EOPNOTSUPP;
608 if (!sta)
609 return -ENODEV;
610 if (sta->txrate < local->oper_hw_mode->num_rates)
611 rate->value = local->oper_hw_mode->rates[sta->txrate].rate * 100000;
612 else
613 rate->value = 0;
614 sta_info_put(sta);
615 return 0;
616 }
617
618 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
619 struct iw_request_info *info,
620 union iwreq_data *data, char *extra)
621 {
622 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
623 bool need_reconfig = 0;
624 u8 new_power_level;
625
626 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
627 return -EINVAL;
628 if (data->txpower.flags & IW_TXPOW_RANGE)
629 return -EINVAL;
630
631 if (data->txpower.fixed) {
632 new_power_level = data->txpower.value;
633 } else {
634 /* Automatic power level. Get the px power from the current
635 * channel. */
636 struct ieee80211_channel* chan = local->oper_channel;
637 if (!chan)
638 return -EINVAL;
639
640 new_power_level = chan->power_level;
641 }
642
643 if (local->hw.conf.power_level != new_power_level) {
644 local->hw.conf.power_level = new_power_level;
645 need_reconfig = 1;
646 }
647
648 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
649 local->hw.conf.radio_enabled = !(data->txpower.disabled);
650 need_reconfig = 1;
651 }
652
653 if (need_reconfig) {
654 ieee80211_hw_config(local);
655 /* The return value of hw_config is not of big interest here,
656 * as it doesn't say that it failed because of _this_ config
657 * change or something else. Ignore it. */
658 }
659
660 return 0;
661 }
662
663 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
664 struct iw_request_info *info,
665 union iwreq_data *data, char *extra)
666 {
667 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
668
669 data->txpower.fixed = 1;
670 data->txpower.disabled = !(local->hw.conf.radio_enabled);
671 data->txpower.value = local->hw.conf.power_level;
672 data->txpower.flags = IW_TXPOW_DBM;
673
674 return 0;
675 }
676
677 static int ieee80211_ioctl_siwrts(struct net_device *dev,
678 struct iw_request_info *info,
679 struct iw_param *rts, char *extra)
680 {
681 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
682
683 if (rts->disabled)
684 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
685 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
686 return -EINVAL;
687 else
688 local->rts_threshold = rts->value;
689
690 /* If the wlan card performs RTS/CTS in hardware/firmware,
691 * configure it here */
692
693 if (local->ops->set_rts_threshold)
694 local->ops->set_rts_threshold(local_to_hw(local),
695 local->rts_threshold);
696
697 return 0;
698 }
699
700 static int ieee80211_ioctl_giwrts(struct net_device *dev,
701 struct iw_request_info *info,
702 struct iw_param *rts, char *extra)
703 {
704 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
705
706 rts->value = local->rts_threshold;
707 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
708 rts->fixed = 1;
709
710 return 0;
711 }
712
713
714 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
715 struct iw_request_info *info,
716 struct iw_param *frag, char *extra)
717 {
718 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
719
720 if (frag->disabled)
721 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
722 else if (frag->value < 256 ||
723 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
724 return -EINVAL;
725 else {
726 /* Fragment length must be even, so strip LSB. */
727 local->fragmentation_threshold = frag->value & ~0x1;
728 }
729
730 /* If the wlan card performs fragmentation in hardware/firmware,
731 * configure it here */
732
733 if (local->ops->set_frag_threshold)
734 local->ops->set_frag_threshold(
735 local_to_hw(local),
736 local->fragmentation_threshold);
737
738 return 0;
739 }
740
741 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
742 struct iw_request_info *info,
743 struct iw_param *frag, char *extra)
744 {
745 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
746
747 frag->value = local->fragmentation_threshold;
748 frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
749 frag->fixed = 1;
750
751 return 0;
752 }
753
754
755 static int ieee80211_ioctl_siwretry(struct net_device *dev,
756 struct iw_request_info *info,
757 struct iw_param *retry, char *extra)
758 {
759 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
760
761 if (retry->disabled ||
762 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
763 return -EINVAL;
764
765 if (retry->flags & IW_RETRY_MAX)
766 local->long_retry_limit = retry->value;
767 else if (retry->flags & IW_RETRY_MIN)
768 local->short_retry_limit = retry->value;
769 else {
770 local->long_retry_limit = retry->value;
771 local->short_retry_limit = retry->value;
772 }
773
774 if (local->ops->set_retry_limit) {
775 return local->ops->set_retry_limit(
776 local_to_hw(local),
777 local->short_retry_limit,
778 local->long_retry_limit);
779 }
780
781 return 0;
782 }
783
784
785 static int ieee80211_ioctl_giwretry(struct net_device *dev,
786 struct iw_request_info *info,
787 struct iw_param *retry, char *extra)
788 {
789 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
790
791 retry->disabled = 0;
792 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
793 /* first return min value, iwconfig will ask max value
794 * later if needed */
795 retry->flags |= IW_RETRY_LIMIT;
796 retry->value = local->short_retry_limit;
797 if (local->long_retry_limit != local->short_retry_limit)
798 retry->flags |= IW_RETRY_MIN;
799 return 0;
800 }
801 if (retry->flags & IW_RETRY_MAX) {
802 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
803 retry->value = local->long_retry_limit;
804 }
805
806 return 0;
807 }
808
809 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
810 struct iw_request_info *info,
811 struct iw_point *data, char *extra)
812 {
813 struct ieee80211_sub_if_data *sdata;
814 struct iw_mlme *mlme = (struct iw_mlme *) extra;
815
816 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
817 if (sdata->type != IEEE80211_IF_TYPE_STA &&
818 sdata->type != IEEE80211_IF_TYPE_IBSS)
819 return -EINVAL;
820
821 switch (mlme->cmd) {
822 case IW_MLME_DEAUTH:
823 /* TODO: mlme->addr.sa_data */
824 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
825 case IW_MLME_DISASSOC:
826 /* TODO: mlme->addr.sa_data */
827 return ieee80211_sta_disassociate(dev, mlme->reason_code);
828 default:
829 return -EOPNOTSUPP;
830 }
831 }
832
833
834 static int ieee80211_ioctl_siwencode(struct net_device *dev,
835 struct iw_request_info *info,
836 struct iw_point *erq, char *keybuf)
837 {
838 struct ieee80211_sub_if_data *sdata;
839 int idx, i, alg = ALG_WEP;
840 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
841 int remove = 0;
842
843 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
844
845 idx = erq->flags & IW_ENCODE_INDEX;
846 if (idx == 0) {
847 if (sdata->default_key)
848 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
849 if (sdata->default_key == sdata->keys[i]) {
850 idx = i;
851 break;
852 }
853 }
854 } else if (idx < 1 || idx > 4)
855 return -EINVAL;
856 else
857 idx--;
858
859 if (erq->flags & IW_ENCODE_DISABLED)
860 remove = 1;
861 else if (erq->length == 0) {
862 /* No key data - just set the default TX key index */
863 ieee80211_set_default_key(sdata, idx);
864 return 0;
865 }
866
867 return ieee80211_set_encryption(
868 dev, bcaddr,
869 idx, alg, remove,
870 !sdata->default_key,
871 keybuf, erq->length);
872 }
873
874
875 static int ieee80211_ioctl_giwencode(struct net_device *dev,
876 struct iw_request_info *info,
877 struct iw_point *erq, char *key)
878 {
879 struct ieee80211_sub_if_data *sdata;
880 int idx, i;
881
882 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
883
884 idx = erq->flags & IW_ENCODE_INDEX;
885 if (idx < 1 || idx > 4) {
886 idx = -1;
887 if (!sdata->default_key)
888 idx = 0;
889 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
890 if (sdata->default_key == sdata->keys[i]) {
891 idx = i;
892 break;
893 }
894 }
895 if (idx < 0)
896 return -EINVAL;
897 } else
898 idx--;
899
900 erq->flags = idx + 1;
901
902 if (!sdata->keys[idx]) {
903 erq->length = 0;
904 erq->flags |= IW_ENCODE_DISABLED;
905 return 0;
906 }
907
908 memcpy(key, sdata->keys[idx]->conf.key,
909 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
910 erq->length = sdata->keys[idx]->conf.keylen;
911 erq->flags |= IW_ENCODE_ENABLED;
912
913 return 0;
914 }
915
916 static int ieee80211_ioctl_siwauth(struct net_device *dev,
917 struct iw_request_info *info,
918 struct iw_param *data, char *extra)
919 {
920 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
921 int ret = 0;
922
923 switch (data->flags & IW_AUTH_INDEX) {
924 case IW_AUTH_WPA_VERSION:
925 case IW_AUTH_CIPHER_PAIRWISE:
926 case IW_AUTH_CIPHER_GROUP:
927 case IW_AUTH_WPA_ENABLED:
928 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
929 case IW_AUTH_KEY_MGMT:
930 break;
931 case IW_AUTH_PRIVACY_INVOKED:
932 if (sdata->type != IEEE80211_IF_TYPE_STA)
933 ret = -EINVAL;
934 else {
935 sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
936 /*
937 * Privacy invoked by wpa_supplicant, store the
938 * value and allow associating to a protected
939 * network without having a key up front.
940 */
941 if (data->value)
942 sdata->u.sta.flags |=
943 IEEE80211_STA_PRIVACY_INVOKED;
944 }
945 break;
946 case IW_AUTH_80211_AUTH_ALG:
947 if (sdata->type == IEEE80211_IF_TYPE_STA ||
948 sdata->type == IEEE80211_IF_TYPE_IBSS)
949 sdata->u.sta.auth_algs = data->value;
950 else
951 ret = -EOPNOTSUPP;
952 break;
953 default:
954 ret = -EOPNOTSUPP;
955 break;
956 }
957 return ret;
958 }
959
960 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
961 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
962 {
963 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
964 struct iw_statistics *wstats = &local->wstats;
965 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
966 struct sta_info *sta = NULL;
967
968 if (sdata->type == IEEE80211_IF_TYPE_STA ||
969 sdata->type == IEEE80211_IF_TYPE_IBSS)
970 sta = sta_info_get(local, sdata->u.sta.bssid);
971 if (!sta) {
972 wstats->discard.fragment = 0;
973 wstats->discard.misc = 0;
974 wstats->qual.qual = 0;
975 wstats->qual.level = 0;
976 wstats->qual.noise = 0;
977 wstats->qual.updated = IW_QUAL_ALL_INVALID;
978 } else {
979 wstats->qual.level = sta->last_rssi;
980 wstats->qual.qual = sta->last_signal;
981 wstats->qual.noise = sta->last_noise;
982 wstats->qual.updated = local->wstats_flags;
983 sta_info_put(sta);
984 }
985 return wstats;
986 }
987
988 static int ieee80211_ioctl_giwauth(struct net_device *dev,
989 struct iw_request_info *info,
990 struct iw_param *data, char *extra)
991 {
992 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
993 int ret = 0;
994
995 switch (data->flags & IW_AUTH_INDEX) {
996 case IW_AUTH_80211_AUTH_ALG:
997 if (sdata->type == IEEE80211_IF_TYPE_STA ||
998 sdata->type == IEEE80211_IF_TYPE_IBSS)
999 data->value = sdata->u.sta.auth_algs;
1000 else
1001 ret = -EOPNOTSUPP;
1002 break;
1003 default:
1004 ret = -EOPNOTSUPP;
1005 break;
1006 }
1007 return ret;
1008 }
1009
1010
1011 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1012 struct iw_request_info *info,
1013 struct iw_point *erq, char *extra)
1014 {
1015 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1016 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1017 int uninitialized_var(alg), idx, i, remove = 0;
1018
1019 switch (ext->alg) {
1020 case IW_ENCODE_ALG_NONE:
1021 remove = 1;
1022 break;
1023 case IW_ENCODE_ALG_WEP:
1024 alg = ALG_WEP;
1025 break;
1026 case IW_ENCODE_ALG_TKIP:
1027 alg = ALG_TKIP;
1028 break;
1029 case IW_ENCODE_ALG_CCMP:
1030 alg = ALG_CCMP;
1031 break;
1032 default:
1033 return -EOPNOTSUPP;
1034 }
1035
1036 if (erq->flags & IW_ENCODE_DISABLED)
1037 remove = 1;
1038
1039 idx = erq->flags & IW_ENCODE_INDEX;
1040 if (idx < 1 || idx > 4) {
1041 idx = -1;
1042 if (!sdata->default_key)
1043 idx = 0;
1044 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1045 if (sdata->default_key == sdata->keys[i]) {
1046 idx = i;
1047 break;
1048 }
1049 }
1050 if (idx < 0)
1051 return -EINVAL;
1052 } else
1053 idx--;
1054
1055 return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1056 remove,
1057 ext->ext_flags &
1058 IW_ENCODE_EXT_SET_TX_KEY,
1059 ext->key, ext->key_len);
1060 }
1061
1062
1063 /* Structures to export the Wireless Handlers */
1064
1065 static const iw_handler ieee80211_handler[] =
1066 {
1067 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1068 (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
1069 (iw_handler) NULL, /* SIOCSIWNWID */
1070 (iw_handler) NULL, /* SIOCGIWNWID */
1071 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1072 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1073 (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
1074 (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
1075 (iw_handler) NULL, /* SIOCSIWSENS */
1076 (iw_handler) NULL, /* SIOCGIWSENS */
1077 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1078 (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
1079 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1080 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1081 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1082 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1083 (iw_handler) NULL, /* SIOCSIWSPY */
1084 (iw_handler) NULL, /* SIOCGIWSPY */
1085 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1086 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1087 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1088 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1089 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1090 (iw_handler) NULL, /* SIOCGIWAPLIST */
1091 (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
1092 (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
1093 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1094 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1095 (iw_handler) NULL, /* SIOCSIWNICKN */
1096 (iw_handler) NULL, /* SIOCGIWNICKN */
1097 (iw_handler) NULL, /* -- hole -- */
1098 (iw_handler) NULL, /* -- hole -- */
1099 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1100 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1101 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1102 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1103 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1104 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1105 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1106 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1107 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1108 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1109 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1110 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1111 (iw_handler) NULL, /* SIOCSIWPOWER */
1112 (iw_handler) NULL, /* SIOCGIWPOWER */
1113 (iw_handler) NULL, /* -- hole -- */
1114 (iw_handler) NULL, /* -- hole -- */
1115 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1116 (iw_handler) NULL, /* SIOCGIWGENIE */
1117 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1118 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1119 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1120 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1121 (iw_handler) NULL, /* SIOCSIWPMKSA */
1122 (iw_handler) NULL, /* -- hole -- */
1123 };
1124
1125 const struct iw_handler_def ieee80211_iw_handler_def =
1126 {
1127 .num_standard = ARRAY_SIZE(ieee80211_handler),
1128 .standard = (iw_handler *) ieee80211_handler,
1129 .get_wireless_stats = ieee80211_get_wireless_stats,
1130 };
Linux kernel - Deliverables
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