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Memory controller: OOM handling
[linux-2.6/openmoko-kernel/knife-kernel.git] / net / mac80211 / ieee80211_ioctl.c
blob5024d3733834cc9938a0a32a213c301cf48577c7
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_led.h"
25 #include "ieee80211_rate.h"
26 #include "wpa.h"
27 #include "aes_ccm.h"
28
29
30 static int ieee80211_set_encryption(struct net_device *dev, 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 = wdev_priv(dev->ieee80211_ptr);
36 int ret = 0;
37 struct sta_info *sta;
38 struct ieee80211_key *key;
39 struct ieee80211_sub_if_data *sdata;
40
41 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
42
43 if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
44 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
45 dev->name, idx);
46 return -EINVAL;
47 }
48
49 if (is_broadcast_ether_addr(sta_addr)) {
50 sta = NULL;
51 key = sdata->keys[idx];
52 } else {
53 set_tx_key = 0;
54 /*
55 * According to the standard, the key index of a pairwise
56 * key must be zero. However, some AP are broken when it
57 * comes to WEP key indices, so we work around this.
58 */
59 if (idx != 0 && alg != ALG_WEP) {
60 printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
61 "individual key\n", dev->name);
62 return -EINVAL;
63 }
64
65 sta = sta_info_get(local, sta_addr);
66 if (!sta) {
67 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
68 DECLARE_MAC_BUF(mac);
69 printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
70 "%s\n",
71 dev->name, print_mac(mac, sta_addr));
72 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
73
74 return -ENOENT;
75 }
76
77 key = sta->key;
78 }
79
80 if (remove) {
81 ieee80211_key_free(key);
82 key = NULL;
83 } else {
84 /*
85 * Automatically frees any old key if present.
86 */
87 key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
88 if (!key) {
89 ret = -ENOMEM;
90 goto err_out;
91 }
92 }
93
94 if (set_tx_key || (!sta && !sdata->default_key && key))
95 ieee80211_set_default_key(sdata, idx);
96
97 ret = 0;
98 err_out:
99 if (sta)
100 sta_info_put(sta);
101 return ret;
102 }
103
104 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
105 struct iw_request_info *info,
106 struct iw_point *data, char *extra)
107 {
108 struct ieee80211_sub_if_data *sdata;
109
110 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
111
112 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
113 return -EOPNOTSUPP;
114
115 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
116 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
117 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
118 if (ret)
119 return ret;
120 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
121 ieee80211_sta_req_auth(dev, &sdata->u.sta);
122 return 0;
123 }
124
125 return -EOPNOTSUPP;
126 }
127
128 static int ieee80211_ioctl_giwname(struct net_device *dev,
129 struct iw_request_info *info,
130 char *name, char *extra)
131 {
132 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
133
134 switch (local->hw.conf.phymode) {
135 case MODE_IEEE80211A:
136 strcpy(name, "IEEE 802.11a");
137 break;
138 case MODE_IEEE80211B:
139 strcpy(name, "IEEE 802.11b");
140 break;
141 case MODE_IEEE80211G:
142 strcpy(name, "IEEE 802.11g");
143 break;
144 default:
145 strcpy(name, "IEEE 802.11");
146 break;
147 }
148
149 return 0;
150 }
151
152
153 static int ieee80211_ioctl_giwrange(struct net_device *dev,
154 struct iw_request_info *info,
155 struct iw_point *data, char *extra)
156 {
157 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
158 struct iw_range *range = (struct iw_range *) extra;
159 struct ieee80211_hw_mode *mode = NULL;
160 int c = 0;
161
162 data->length = sizeof(struct iw_range);
163 memset(range, 0, sizeof(struct iw_range));
164
165 range->we_version_compiled = WIRELESS_EXT;
166 range->we_version_source = 21;
167 range->retry_capa = IW_RETRY_LIMIT;
168 range->retry_flags = IW_RETRY_LIMIT;
169 range->min_retry = 0;
170 range->max_retry = 255;
171 range->min_rts = 0;
172 range->max_rts = 2347;
173 range->min_frag = 256;
174 range->max_frag = 2346;
175
176 range->encoding_size[0] = 5;
177 range->encoding_size[1] = 13;
178 range->num_encoding_sizes = 2;
179 range->max_encoding_tokens = NUM_DEFAULT_KEYS;
180
181 range->max_qual.qual = local->hw.max_signal;
182 range->max_qual.level = local->hw.max_rssi;
183 range->max_qual.noise = local->hw.max_noise;
184 range->max_qual.updated = local->wstats_flags;
185
186 range->avg_qual.qual = local->hw.max_signal/2;
187 range->avg_qual.level = 0;
188 range->avg_qual.noise = 0;
189 range->avg_qual.updated = local->wstats_flags;
190
191 range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
192 IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
193
194 list_for_each_entry(mode, &local->modes_list, list) {
195 int i = 0;
196
197 if (!(local->enabled_modes & (1 << mode->mode)) ||
198 (local->hw_modes & local->enabled_modes &
199 (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
200 continue;
201
202 while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
203 struct ieee80211_channel *chan = &mode->channels[i];
204
205 if (chan->flag & IEEE80211_CHAN_W_SCAN) {
206 range->freq[c].i = chan->chan;
207 range->freq[c].m = chan->freq * 100000;
208 range->freq[c].e = 1;
209 c++;
210 }
211 i++;
212 }
213 }
214 range->num_channels = c;
215 range->num_frequency = c;
216
217 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
218 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
219 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
220 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
221
222 range->scan_capa |= IW_SCAN_CAPA_ESSID;
223
224 return 0;
225 }
226
227
228 static int ieee80211_ioctl_siwmode(struct net_device *dev,
229 struct iw_request_info *info,
230 __u32 *mode, char *extra)
231 {
232 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
233 int type;
234
235 if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
236 return -EOPNOTSUPP;
237
238 switch (*mode) {
239 case IW_MODE_INFRA:
240 type = IEEE80211_IF_TYPE_STA;
241 break;
242 case IW_MODE_ADHOC:
243 type = IEEE80211_IF_TYPE_IBSS;
244 break;
245 case IW_MODE_MONITOR:
246 type = IEEE80211_IF_TYPE_MNTR;
247 break;
248 default:
249 return -EINVAL;
250 }
251
252 if (type == sdata->vif.type)
253 return 0;
254 if (netif_running(dev))
255 return -EBUSY;
256
257 ieee80211_if_reinit(dev);
258 ieee80211_if_set_type(dev, type);
259
260 return 0;
261 }
262
263
264 static int ieee80211_ioctl_giwmode(struct net_device *dev,
265 struct iw_request_info *info,
266 __u32 *mode, char *extra)
267 {
268 struct ieee80211_sub_if_data *sdata;
269
270 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
271 switch (sdata->vif.type) {
272 case IEEE80211_IF_TYPE_AP:
273 *mode = IW_MODE_MASTER;
274 break;
275 case IEEE80211_IF_TYPE_STA:
276 *mode = IW_MODE_INFRA;
277 break;
278 case IEEE80211_IF_TYPE_IBSS:
279 *mode = IW_MODE_ADHOC;
280 break;
281 case IEEE80211_IF_TYPE_MNTR:
282 *mode = IW_MODE_MONITOR;
283 break;
284 case IEEE80211_IF_TYPE_WDS:
285 *mode = IW_MODE_REPEAT;
286 break;
287 case IEEE80211_IF_TYPE_VLAN:
288 *mode = IW_MODE_SECOND; /* FIXME */
289 break;
290 default:
291 *mode = IW_MODE_AUTO;
292 break;
293 }
294 return 0;
295 }
296
297 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
298 {
299 struct ieee80211_hw_mode *mode;
300 int c, set = 0;
301 int ret = -EINVAL;
302
303 list_for_each_entry(mode, &local->modes_list, list) {
304 if (!(local->enabled_modes & (1 << mode->mode)))
305 continue;
306 for (c = 0; c < mode->num_channels; c++) {
307 struct ieee80211_channel *chan = &mode->channels[c];
308 if (chan->flag & IEEE80211_CHAN_W_SCAN &&
309 ((chan->chan == channel) || (chan->freq == freq))) {
310 local->oper_channel = chan;
311 local->oper_hw_mode = mode;
312 set = 1;
313 break;
314 }
315 }
316 if (set)
317 break;
318 }
319
320 if (set) {
321 if (local->sta_sw_scanning)
322 ret = 0;
323 else
324 ret = ieee80211_hw_config(local);
325
326 rate_control_clear(local);
327 }
328
329 return ret;
330 }
331
332 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
333 struct iw_request_info *info,
334 struct iw_freq *freq, char *extra)
335 {
336 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
337 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
338
339 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
340 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
341
342 /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
343 if (freq->e == 0) {
344 if (freq->m < 0) {
345 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
346 sdata->u.sta.flags |=
347 IEEE80211_STA_AUTO_CHANNEL_SEL;
348 return 0;
349 } else
350 return ieee80211_set_channel(local, freq->m, -1);
351 } else {
352 int i, div = 1000000;
353 for (i = 0; i < freq->e; i++)
354 div /= 10;
355 if (div > 0)
356 return ieee80211_set_channel(local, -1, freq->m / div);
357 else
358 return -EINVAL;
359 }
360 }
361
362
363 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
364 struct iw_request_info *info,
365 struct iw_freq *freq, char *extra)
366 {
367 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
368
369 /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
370 * driver for the current channel with firmware-based management */
371
372 freq->m = local->hw.conf.freq;
373 freq->e = 6;
374
375 return 0;
376 }
377
378
379 static int ieee80211_ioctl_siwessid(struct net_device *dev,
380 struct iw_request_info *info,
381 struct iw_point *data, char *ssid)
382 {
383 struct ieee80211_sub_if_data *sdata;
384 size_t len = data->length;
385
386 /* iwconfig uses nul termination in SSID.. */
387 if (len > 0 && ssid[len - 1] == '\0')
388 len--;
389
390 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
391 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
392 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
393 int ret;
394 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
395 if (len > IEEE80211_MAX_SSID_LEN)
396 return -EINVAL;
397 memcpy(sdata->u.sta.ssid, ssid, len);
398 sdata->u.sta.ssid_len = len;
399 return 0;
400 }
401 if (data->flags)
402 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
403 else
404 sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
405 ret = ieee80211_sta_set_ssid(dev, ssid, len);
406 if (ret)
407 return ret;
408 ieee80211_sta_req_auth(dev, &sdata->u.sta);
409 return 0;
410 }
411
412 if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
413 memcpy(sdata->u.ap.ssid, ssid, len);
414 memset(sdata->u.ap.ssid + len, 0,
415 IEEE80211_MAX_SSID_LEN - len);
416 sdata->u.ap.ssid_len = len;
417 return ieee80211_if_config(dev);
418 }
419 return -EOPNOTSUPP;
420 }
421
422
423 static int ieee80211_ioctl_giwessid(struct net_device *dev,
424 struct iw_request_info *info,
425 struct iw_point *data, char *ssid)
426 {
427 size_t len;
428
429 struct ieee80211_sub_if_data *sdata;
430 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
431 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
432 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
433 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
434 if (res == 0) {
435 data->length = len;
436 data->flags = 1;
437 } else
438 data->flags = 0;
439 return res;
440 }
441
442 if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
443 len = sdata->u.ap.ssid_len;
444 if (len > IW_ESSID_MAX_SIZE)
445 len = IW_ESSID_MAX_SIZE;
446 memcpy(ssid, sdata->u.ap.ssid, len);
447 data->length = len;
448 data->flags = 1;
449 return 0;
450 }
451 return -EOPNOTSUPP;
452 }
453
454
455 static int ieee80211_ioctl_siwap(struct net_device *dev,
456 struct iw_request_info *info,
457 struct sockaddr *ap_addr, char *extra)
458 {
459 struct ieee80211_sub_if_data *sdata;
460
461 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
462 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
463 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
464 int ret;
465 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
466 memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
467 ETH_ALEN);
468 return 0;
469 }
470 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
471 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
472 IEEE80211_STA_AUTO_CHANNEL_SEL;
473 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
474 sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
475 else
476 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
477 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
478 if (ret)
479 return ret;
480 ieee80211_sta_req_auth(dev, &sdata->u.sta);
481 return 0;
482 } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
483 if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
484 ETH_ALEN) == 0)
485 return 0;
486 return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
487 }
488
489 return -EOPNOTSUPP;
490 }
491
492
493 static int ieee80211_ioctl_giwap(struct net_device *dev,
494 struct iw_request_info *info,
495 struct sockaddr *ap_addr, char *extra)
496 {
497 struct ieee80211_sub_if_data *sdata;
498
499 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
500 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
501 sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
502 ap_addr->sa_family = ARPHRD_ETHER;
503 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
504 return 0;
505 } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
506 ap_addr->sa_family = ARPHRD_ETHER;
507 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
508 return 0;
509 }
510
511 return -EOPNOTSUPP;
512 }
513
514
515 static int ieee80211_ioctl_siwscan(struct net_device *dev,
516 struct iw_request_info *info,
517 union iwreq_data *wrqu, char *extra)
518 {
519 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
520 struct iw_scan_req *req = NULL;
521 u8 *ssid = NULL;
522 size_t ssid_len = 0;
523
524 if (!netif_running(dev))
525 return -ENETDOWN;
526
527 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
528 sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
529 sdata->vif.type != IEEE80211_IF_TYPE_AP)
530 return -EOPNOTSUPP;
531
532 /* if SSID was specified explicitly then use that */
533 if (wrqu->data.length == sizeof(struct iw_scan_req) &&
534 wrqu->data.flags & IW_SCAN_THIS_ESSID) {
535 req = (struct iw_scan_req *)extra;
536 ssid = req->essid;
537 ssid_len = req->essid_len;
538 }
539
540 return ieee80211_sta_req_scan(dev, ssid, ssid_len);
541 }
542
543
544 static int ieee80211_ioctl_giwscan(struct net_device *dev,
545 struct iw_request_info *info,
546 struct iw_point *data, char *extra)
547 {
548 int res;
549 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
550
551 if (local->sta_sw_scanning || local->sta_hw_scanning)
552 return -EAGAIN;
553
554 res = ieee80211_sta_scan_results(dev, extra, data->length);
555 if (res >= 0) {
556 data->length = res;
557 return 0;
558 }
559 data->length = 0;
560 return res;
561 }
562
563
564 static int ieee80211_ioctl_siwrate(struct net_device *dev,
565 struct iw_request_info *info,
566 struct iw_param *rate, char *extra)
567 {
568 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
569 struct ieee80211_hw_mode *mode;
570 int i;
571 u32 target_rate = rate->value / 100000;
572 struct ieee80211_sub_if_data *sdata;
573
574 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
575 if (!sdata->bss)
576 return -ENODEV;
577 mode = local->oper_hw_mode;
578 /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
579 * target_rate = X, rate->fixed = 1 means only rate X
580 * target_rate = X, rate->fixed = 0 means all rates <= X */
581 sdata->bss->max_ratectrl_rateidx = -1;
582 sdata->bss->force_unicast_rateidx = -1;
583 if (rate->value < 0)
584 return 0;
585 for (i=0; i < mode->num_rates; i++) {
586 struct ieee80211_rate *rates = &mode->rates[i];
587 int this_rate = rates->rate;
588
589 if (target_rate == this_rate) {
590 sdata->bss->max_ratectrl_rateidx = i;
591 if (rate->fixed)
592 sdata->bss->force_unicast_rateidx = i;
593 return 0;
594 }
595 }
596 return -EINVAL;
597 }
598
599 static int ieee80211_ioctl_giwrate(struct net_device *dev,
600 struct iw_request_info *info,
601 struct iw_param *rate, char *extra)
602 {
603 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
604 struct sta_info *sta;
605 struct ieee80211_sub_if_data *sdata;
606
607 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
608 if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
609 sta = sta_info_get(local, sdata->u.sta.bssid);
610 else
611 return -EOPNOTSUPP;
612 if (!sta)
613 return -ENODEV;
614 if (sta->txrate < local->oper_hw_mode->num_rates)
615 rate->value = local->oper_hw_mode->rates[sta->txrate].rate * 100000;
616 else
617 rate->value = 0;
618 sta_info_put(sta);
619 return 0;
620 }
621
622 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
623 struct iw_request_info *info,
624 union iwreq_data *data, char *extra)
625 {
626 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
627 bool need_reconfig = 0;
628 u8 new_power_level;
629
630 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
631 return -EINVAL;
632 if (data->txpower.flags & IW_TXPOW_RANGE)
633 return -EINVAL;
634
635 if (data->txpower.fixed) {
636 new_power_level = data->txpower.value;
637 } else {
638 /* Automatic power level. Get the px power from the current
639 * channel. */
640 struct ieee80211_channel* chan = local->oper_channel;
641 if (!chan)
642 return -EINVAL;
643
644 new_power_level = chan->power_level;
645 }
646
647 if (local->hw.conf.power_level != new_power_level) {
648 local->hw.conf.power_level = new_power_level;
649 need_reconfig = 1;
650 }
651
652 if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
653 local->hw.conf.radio_enabled = !(data->txpower.disabled);
654 need_reconfig = 1;
655 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
656 }
657
658 if (need_reconfig) {
659 ieee80211_hw_config(local);
660 /* The return value of hw_config is not of big interest here,
661 * as it doesn't say that it failed because of _this_ config
662 * change or something else. Ignore it. */
663 }
664
665 return 0;
666 }
667
668 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
669 struct iw_request_info *info,
670 union iwreq_data *data, char *extra)
671 {
672 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
673
674 data->txpower.fixed = 1;
675 data->txpower.disabled = !(local->hw.conf.radio_enabled);
676 data->txpower.value = local->hw.conf.power_level;
677 data->txpower.flags = IW_TXPOW_DBM;
678
679 return 0;
680 }
681
682 static int ieee80211_ioctl_siwrts(struct net_device *dev,
683 struct iw_request_info *info,
684 struct iw_param *rts, char *extra)
685 {
686 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
687
688 if (rts->disabled)
689 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
690 else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
691 return -EINVAL;
692 else
693 local->rts_threshold = rts->value;
694
695 /* If the wlan card performs RTS/CTS in hardware/firmware,
696 * configure it here */
697
698 if (local->ops->set_rts_threshold)
699 local->ops->set_rts_threshold(local_to_hw(local),
700 local->rts_threshold);
701
702 return 0;
703 }
704
705 static int ieee80211_ioctl_giwrts(struct net_device *dev,
706 struct iw_request_info *info,
707 struct iw_param *rts, char *extra)
708 {
709 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
710
711 rts->value = local->rts_threshold;
712 rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
713 rts->fixed = 1;
714
715 return 0;
716 }
717
718
719 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
720 struct iw_request_info *info,
721 struct iw_param *frag, char *extra)
722 {
723 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
724
725 if (frag->disabled)
726 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
727 else if (frag->value < 256 ||
728 frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
729 return -EINVAL;
730 else {
731 /* Fragment length must be even, so strip LSB. */
732 local->fragmentation_threshold = frag->value & ~0x1;
733 }
734
735 /* If the wlan card performs fragmentation in hardware/firmware,
736 * configure it here */
737
738 if (local->ops->set_frag_threshold)
739 local->ops->set_frag_threshold(
740 local_to_hw(local),
741 local->fragmentation_threshold);
742
743 return 0;
744 }
745
746 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
747 struct iw_request_info *info,
748 struct iw_param *frag, char *extra)
749 {
750 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
751
752 frag->value = local->fragmentation_threshold;
753 frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
754 frag->fixed = 1;
755
756 return 0;
757 }
758
759
760 static int ieee80211_ioctl_siwretry(struct net_device *dev,
761 struct iw_request_info *info,
762 struct iw_param *retry, char *extra)
763 {
764 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
765
766 if (retry->disabled ||
767 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
768 return -EINVAL;
769
770 if (retry->flags & IW_RETRY_MAX)
771 local->long_retry_limit = retry->value;
772 else if (retry->flags & IW_RETRY_MIN)
773 local->short_retry_limit = retry->value;
774 else {
775 local->long_retry_limit = retry->value;
776 local->short_retry_limit = retry->value;
777 }
778
779 if (local->ops->set_retry_limit) {
780 return local->ops->set_retry_limit(
781 local_to_hw(local),
782 local->short_retry_limit,
783 local->long_retry_limit);
784 }
785
786 return 0;
787 }
788
789
790 static int ieee80211_ioctl_giwretry(struct net_device *dev,
791 struct iw_request_info *info,
792 struct iw_param *retry, char *extra)
793 {
794 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
795
796 retry->disabled = 0;
797 if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
798 /* first return min value, iwconfig will ask max value
799 * later if needed */
800 retry->flags |= IW_RETRY_LIMIT;
801 retry->value = local->short_retry_limit;
802 if (local->long_retry_limit != local->short_retry_limit)
803 retry->flags |= IW_RETRY_MIN;
804 return 0;
805 }
806 if (retry->flags & IW_RETRY_MAX) {
807 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
808 retry->value = local->long_retry_limit;
809 }
810
811 return 0;
812 }
813
814 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
815 struct iw_request_info *info,
816 struct iw_point *data, char *extra)
817 {
818 struct ieee80211_sub_if_data *sdata;
819 struct iw_mlme *mlme = (struct iw_mlme *) extra;
820
821 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
822 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
823 sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
824 return -EINVAL;
825
826 switch (mlme->cmd) {
827 case IW_MLME_DEAUTH:
828 /* TODO: mlme->addr.sa_data */
829 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
830 case IW_MLME_DISASSOC:
831 /* TODO: mlme->addr.sa_data */
832 return ieee80211_sta_disassociate(dev, mlme->reason_code);
833 default:
834 return -EOPNOTSUPP;
835 }
836 }
837
838
839 static int ieee80211_ioctl_siwencode(struct net_device *dev,
840 struct iw_request_info *info,
841 struct iw_point *erq, char *keybuf)
842 {
843 struct ieee80211_sub_if_data *sdata;
844 int idx, i, alg = ALG_WEP;
845 u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
846 int remove = 0;
847
848 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
849
850 idx = erq->flags & IW_ENCODE_INDEX;
851 if (idx == 0) {
852 if (sdata->default_key)
853 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
854 if (sdata->default_key == sdata->keys[i]) {
855 idx = i;
856 break;
857 }
858 }
859 } else if (idx < 1 || idx > 4)
860 return -EINVAL;
861 else
862 idx--;
863
864 if (erq->flags & IW_ENCODE_DISABLED)
865 remove = 1;
866 else if (erq->length == 0) {
867 /* No key data - just set the default TX key index */
868 ieee80211_set_default_key(sdata, idx);
869 return 0;
870 }
871
872 return ieee80211_set_encryption(
873 dev, bcaddr,
874 idx, alg, remove,
875 !sdata->default_key,
876 keybuf, erq->length);
877 }
878
879
880 static int ieee80211_ioctl_giwencode(struct net_device *dev,
881 struct iw_request_info *info,
882 struct iw_point *erq, char *key)
883 {
884 struct ieee80211_sub_if_data *sdata;
885 int idx, i;
886
887 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
888
889 idx = erq->flags & IW_ENCODE_INDEX;
890 if (idx < 1 || idx > 4) {
891 idx = -1;
892 if (!sdata->default_key)
893 idx = 0;
894 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
895 if (sdata->default_key == sdata->keys[i]) {
896 idx = i;
897 break;
898 }
899 }
900 if (idx < 0)
901 return -EINVAL;
902 } else
903 idx--;
904
905 erq->flags = idx + 1;
906
907 if (!sdata->keys[idx]) {
908 erq->length = 0;
909 erq->flags |= IW_ENCODE_DISABLED;
910 return 0;
911 }
912
913 memcpy(key, sdata->keys[idx]->conf.key,
914 min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
915 erq->length = sdata->keys[idx]->conf.keylen;
916 erq->flags |= IW_ENCODE_ENABLED;
917
918 return 0;
919 }
920
921 static int ieee80211_ioctl_siwauth(struct net_device *dev,
922 struct iw_request_info *info,
923 struct iw_param *data, char *extra)
924 {
925 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
926 int ret = 0;
927
928 switch (data->flags & IW_AUTH_INDEX) {
929 case IW_AUTH_WPA_VERSION:
930 case IW_AUTH_CIPHER_PAIRWISE:
931 case IW_AUTH_CIPHER_GROUP:
932 case IW_AUTH_WPA_ENABLED:
933 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
934 case IW_AUTH_KEY_MGMT:
935 break;
936 case IW_AUTH_DROP_UNENCRYPTED:
937 sdata->drop_unencrypted = !!data->value;
938 break;
939 case IW_AUTH_PRIVACY_INVOKED:
940 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
941 ret = -EINVAL;
942 else {
943 sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
944 /*
945 * Privacy invoked by wpa_supplicant, store the
946 * value and allow associating to a protected
947 * network without having a key up front.
948 */
949 if (data->value)
950 sdata->u.sta.flags |=
951 IEEE80211_STA_PRIVACY_INVOKED;
952 }
953 break;
954 case IW_AUTH_80211_AUTH_ALG:
955 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
956 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
957 sdata->u.sta.auth_algs = data->value;
958 else
959 ret = -EOPNOTSUPP;
960 break;
961 default:
962 ret = -EOPNOTSUPP;
963 break;
964 }
965 return ret;
966 }
967
968 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
969 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
970 {
971 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
972 struct iw_statistics *wstats = &local->wstats;
973 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
974 struct sta_info *sta = NULL;
975
976 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
977 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
978 sta = sta_info_get(local, sdata->u.sta.bssid);
979 if (!sta) {
980 wstats->discard.fragment = 0;
981 wstats->discard.misc = 0;
982 wstats->qual.qual = 0;
983 wstats->qual.level = 0;
984 wstats->qual.noise = 0;
985 wstats->qual.updated = IW_QUAL_ALL_INVALID;
986 } else {
987 wstats->qual.level = sta->last_rssi;
988 wstats->qual.qual = sta->last_signal;
989 wstats->qual.noise = sta->last_noise;
990 wstats->qual.updated = local->wstats_flags;
991 sta_info_put(sta);
992 }
993 return wstats;
994 }
995
996 static int ieee80211_ioctl_giwauth(struct net_device *dev,
997 struct iw_request_info *info,
998 struct iw_param *data, char *extra)
999 {
1000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1001 int ret = 0;
1002
1003 switch (data->flags & IW_AUTH_INDEX) {
1004 case IW_AUTH_80211_AUTH_ALG:
1005 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
1006 sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
1007 data->value = sdata->u.sta.auth_algs;
1008 else
1009 ret = -EOPNOTSUPP;
1010 break;
1011 default:
1012 ret = -EOPNOTSUPP;
1013 break;
1014 }
1015 return ret;
1016 }
1017
1018
1019 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1020 struct iw_request_info *info,
1021 struct iw_point *erq, char *extra)
1022 {
1023 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1024 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1025 int uninitialized_var(alg), idx, i, remove = 0;
1026
1027 switch (ext->alg) {
1028 case IW_ENCODE_ALG_NONE:
1029 remove = 1;
1030 break;
1031 case IW_ENCODE_ALG_WEP:
1032 alg = ALG_WEP;
1033 break;
1034 case IW_ENCODE_ALG_TKIP:
1035 alg = ALG_TKIP;
1036 break;
1037 case IW_ENCODE_ALG_CCMP:
1038 alg = ALG_CCMP;
1039 break;
1040 default:
1041 return -EOPNOTSUPP;
1042 }
1043
1044 if (erq->flags & IW_ENCODE_DISABLED)
1045 remove = 1;
1046
1047 idx = erq->flags & IW_ENCODE_INDEX;
1048 if (idx < 1 || idx > 4) {
1049 idx = -1;
1050 if (!sdata->default_key)
1051 idx = 0;
1052 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1053 if (sdata->default_key == sdata->keys[i]) {
1054 idx = i;
1055 break;
1056 }
1057 }
1058 if (idx < 0)
1059 return -EINVAL;
1060 } else
1061 idx--;
1062
1063 return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1064 remove,
1065 ext->ext_flags &
1066 IW_ENCODE_EXT_SET_TX_KEY,
1067 ext->key, ext->key_len);
1068 }
1069
1070
1071 /* Structures to export the Wireless Handlers */
1072
1073 static const iw_handler ieee80211_handler[] =
1074 {
1075 (iw_handler) NULL, /* SIOCSIWCOMMIT */
1076 (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
1077 (iw_handler) NULL, /* SIOCSIWNWID */
1078 (iw_handler) NULL, /* SIOCGIWNWID */
1079 (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
1080 (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
1081 (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
1082 (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
1083 (iw_handler) NULL, /* SIOCSIWSENS */
1084 (iw_handler) NULL, /* SIOCGIWSENS */
1085 (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
1086 (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
1087 (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
1088 (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
1089 (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
1090 (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
1091 (iw_handler) NULL, /* SIOCSIWSPY */
1092 (iw_handler) NULL, /* SIOCGIWSPY */
1093 (iw_handler) NULL, /* SIOCSIWTHRSPY */
1094 (iw_handler) NULL, /* SIOCGIWTHRSPY */
1095 (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
1096 (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
1097 (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
1098 (iw_handler) NULL, /* SIOCGIWAPLIST */
1099 (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
1100 (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
1101 (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
1102 (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
1103 (iw_handler) NULL, /* SIOCSIWNICKN */
1104 (iw_handler) NULL, /* SIOCGIWNICKN */
1105 (iw_handler) NULL, /* -- hole -- */
1106 (iw_handler) NULL, /* -- hole -- */
1107 (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
1108 (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
1109 (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
1110 (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
1111 (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
1112 (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
1113 (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
1114 (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
1115 (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
1116 (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
1117 (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
1118 (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
1119 (iw_handler) NULL, /* SIOCSIWPOWER */
1120 (iw_handler) NULL, /* SIOCGIWPOWER */
1121 (iw_handler) NULL, /* -- hole -- */
1122 (iw_handler) NULL, /* -- hole -- */
1123 (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
1124 (iw_handler) NULL, /* SIOCGIWGENIE */
1125 (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
1126 (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
1127 (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
1128 (iw_handler) NULL, /* SIOCGIWENCODEEXT */
1129 (iw_handler) NULL, /* SIOCSIWPMKSA */
1130 (iw_handler) NULL, /* -- hole -- */
1131 };
1132
1133 const struct iw_handler_def ieee80211_iw_handler_def =
1134 {
1135 .num_standard = ARRAY_SIZE(ieee80211_handler),
1136 .standard = (iw_handler *) ieee80211_handler,
1137 .get_wireless_stats = ieee80211_get_wireless_stats,
1138 };
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