Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-drm-fsl-dcu.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 == NL80211_IFTYPE_STATION ||
126             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
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_cap.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_cap.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         struct ieee80211_local *local = sdata->local;
275         int type;
276
277         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
278                 return -EOPNOTSUPP;
279
280         switch (*mode) {
281         case IW_MODE_INFRA:
282                 type = NL80211_IFTYPE_STATION;
283                 break;
284         case IW_MODE_ADHOC:
285                 /* Setting ad-hoc mode on non ibss channel is not
286                  * supported.
287                  */
288                 if (local->oper_channel &&
289                     (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS))
290                         return -EOPNOTSUPP;
291
292                 type = NL80211_IFTYPE_ADHOC;
293                 break;
294         case IW_MODE_REPEAT:
295                 type = NL80211_IFTYPE_WDS;
296                 break;
297         case IW_MODE_MONITOR:
298                 type = NL80211_IFTYPE_MONITOR;
299                 break;
300         default:
301                 return -EINVAL;
302         }
303
304         return ieee80211_if_change_type(sdata, type);
305 }
306
307
308 static int ieee80211_ioctl_giwmode(struct net_device *dev,
309                                    struct iw_request_info *info,
310                                    __u32 *mode, char *extra)
311 {
312         struct ieee80211_sub_if_data *sdata;
313
314         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
315         switch (sdata->vif.type) {
316         case NL80211_IFTYPE_AP:
317                 *mode = IW_MODE_MASTER;
318                 break;
319         case NL80211_IFTYPE_STATION:
320                 *mode = IW_MODE_INFRA;
321                 break;
322         case NL80211_IFTYPE_ADHOC:
323                 *mode = IW_MODE_ADHOC;
324                 break;
325         case NL80211_IFTYPE_MONITOR:
326                 *mode = IW_MODE_MONITOR;
327                 break;
328         case NL80211_IFTYPE_WDS:
329                 *mode = IW_MODE_REPEAT;
330                 break;
331         case NL80211_IFTYPE_AP_VLAN:
332                 *mode = IW_MODE_SECOND;         /* FIXME */
333                 break;
334         default:
335                 *mode = IW_MODE_AUTO;
336                 break;
337         }
338         return 0;
339 }
340
341 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
342                                    struct iw_request_info *info,
343                                    struct iw_freq *freq, char *extra)
344 {
345         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
346
347         if (sdata->vif.type == NL80211_IFTYPE_STATION)
348                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
349
350         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
351         if (freq->e == 0) {
352                 if (freq->m < 0) {
353                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
354                                 sdata->u.sta.flags |=
355                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
356                         return 0;
357                 } else
358                         return ieee80211_set_freq(sdata,
359                                 ieee80211_channel_to_frequency(freq->m));
360         } else {
361                 int i, div = 1000000;
362                 for (i = 0; i < freq->e; i++)
363                         div /= 10;
364                 if (div > 0)
365                         return ieee80211_set_freq(sdata, freq->m / div);
366                 else
367                         return -EINVAL;
368         }
369 }
370
371
372 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
373                                    struct iw_request_info *info,
374                                    struct iw_freq *freq, char *extra)
375 {
376         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
377
378         freq->m = local->hw.conf.channel->center_freq;
379         freq->e = 6;
380
381         return 0;
382 }
383
384
385 static int ieee80211_ioctl_siwessid(struct net_device *dev,
386                                     struct iw_request_info *info,
387                                     struct iw_point *data, char *ssid)
388 {
389         struct ieee80211_sub_if_data *sdata;
390         size_t len = data->length;
391
392         /* iwconfig uses nul termination in SSID.. */
393         if (len > 0 && ssid[len - 1] == '\0')
394                 len--;
395
396         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
397         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
398             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
399                 int ret;
400                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
401                         if (len > IEEE80211_MAX_SSID_LEN)
402                                 return -EINVAL;
403                         memcpy(sdata->u.sta.ssid, ssid, len);
404                         sdata->u.sta.ssid_len = len;
405                         return 0;
406                 }
407                 if (data->flags)
408                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
409                 else
410                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
411                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
412                 if (ret)
413                         return ret;
414                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
415                 return 0;
416         }
417
418         return -EOPNOTSUPP;
419 }
420
421
422 static int ieee80211_ioctl_giwessid(struct net_device *dev,
423                                     struct iw_request_info *info,
424                                     struct iw_point *data, char *ssid)
425 {
426         size_t len;
427
428         struct ieee80211_sub_if_data *sdata;
429         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
430         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
431             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
432                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
433                 if (res == 0) {
434                         data->length = len;
435                         data->flags = 1;
436                 } else
437                         data->flags = 0;
438                 return res;
439         }
440
441         return -EOPNOTSUPP;
442 }
443
444
445 static int ieee80211_ioctl_siwap(struct net_device *dev,
446                                  struct iw_request_info *info,
447                                  struct sockaddr *ap_addr, char *extra)
448 {
449         struct ieee80211_sub_if_data *sdata;
450
451         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
452         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
453             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
454                 int ret;
455                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
456                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
457                                ETH_ALEN);
458                         return 0;
459                 }
460                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
461                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
462                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
463                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
464                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
465                 else
466                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
467                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
468                 if (ret)
469                         return ret;
470                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
471                 return 0;
472         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
473                 /*
474                  * If it is necessary to update the WDS peer address
475                  * while the interface is running, then we need to do
476                  * more work here, namely if it is running we need to
477                  * add a new and remove the old STA entry, this is
478                  * normally handled by _open() and _stop().
479                  */
480                 if (netif_running(dev))
481                         return -EBUSY;
482
483                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
484                        ETH_ALEN);
485
486                 return 0;
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 == NL80211_IFTYPE_STATION ||
501             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
502                 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
503                     sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
504                         ap_addr->sa_family = ARPHRD_ETHER;
505                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
506                         return 0;
507                 } else {
508                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
509                         return 0;
510                 }
511         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
512                 ap_addr->sa_family = ARPHRD_ETHER;
513                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
514                 return 0;
515         }
516
517         return -EOPNOTSUPP;
518 }
519
520
521 static int ieee80211_ioctl_siwscan(struct net_device *dev,
522                                    struct iw_request_info *info,
523                                    union iwreq_data *wrqu, char *extra)
524 {
525         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
526         struct iw_scan_req *req = NULL;
527         u8 *ssid = NULL;
528         size_t ssid_len = 0;
529
530         if (!netif_running(dev))
531                 return -ENETDOWN;
532
533         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
534             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
535             sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
536             sdata->vif.type != NL80211_IFTYPE_AP)
537                 return -EOPNOTSUPP;
538
539         /* if SSID was specified explicitly then use that */
540         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
541             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
542                 req = (struct iw_scan_req *)extra;
543                 ssid = req->essid;
544                 ssid_len = req->essid_len;
545         }
546
547         return ieee80211_request_scan(sdata, ssid, ssid_len);
548 }
549
550
551 static int ieee80211_ioctl_giwscan(struct net_device *dev,
552                                    struct iw_request_info *info,
553                                    struct iw_point *data, char *extra)
554 {
555         int res;
556         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
557         struct ieee80211_sub_if_data *sdata;
558
559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
560
561         if (local->sw_scanning || local->hw_scanning)
562                 return -EAGAIN;
563
564         res = ieee80211_scan_results(local, info, extra, data->length);
565         if (res >= 0) {
566                 data->length = res;
567                 return 0;
568         }
569         data->length = 0;
570         return res;
571 }
572
573
574 static int ieee80211_ioctl_siwrate(struct net_device *dev,
575                                   struct iw_request_info *info,
576                                   struct iw_param *rate, char *extra)
577 {
578         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
579         int i, err = -EINVAL;
580         u32 target_rate = rate->value / 100000;
581         struct ieee80211_sub_if_data *sdata;
582         struct ieee80211_supported_band *sband;
583
584         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
585
586         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
587
588         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
589          * target_rate = X, rate->fixed = 1 means only rate X
590          * target_rate = X, rate->fixed = 0 means all rates <= X */
591         sdata->max_ratectrl_rateidx = -1;
592         sdata->force_unicast_rateidx = -1;
593         if (rate->value < 0)
594                 return 0;
595
596         for (i=0; i< sband->n_bitrates; i++) {
597                 struct ieee80211_rate *brate = &sband->bitrates[i];
598                 int this_rate = brate->bitrate;
599
600                 if (target_rate == this_rate) {
601                         sdata->max_ratectrl_rateidx = i;
602                         if (rate->fixed)
603                                 sdata->force_unicast_rateidx = i;
604                         err = 0;
605                         break;
606                 }
607         }
608         return err;
609 }
610
611 static int ieee80211_ioctl_giwrate(struct net_device *dev,
612                                   struct iw_request_info *info,
613                                   struct iw_param *rate, char *extra)
614 {
615         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
616         struct sta_info *sta;
617         struct ieee80211_sub_if_data *sdata;
618         struct ieee80211_supported_band *sband;
619
620         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
621
622         if (sdata->vif.type != NL80211_IFTYPE_STATION)
623                 return -EOPNOTSUPP;
624
625         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
626
627         rcu_read_lock();
628
629         sta = sta_info_get(local, sdata->u.sta.bssid);
630
631         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
632                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
633         else
634                 rate->value = 0;
635
636         rcu_read_unlock();
637
638         if (!sta)
639                 return -ENODEV;
640
641         rate->value *= 100000;
642
643         return 0;
644 }
645
646 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
647                                       struct iw_request_info *info,
648                                       union iwreq_data *data, char *extra)
649 {
650         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
651         struct ieee80211_channel* chan = local->hw.conf.channel;
652         u32 reconf_flags = 0;
653         int new_power_level;
654
655         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
656                 return -EINVAL;
657         if (data->txpower.flags & IW_TXPOW_RANGE)
658                 return -EINVAL;
659         if (!chan)
660                 return -EINVAL;
661
662         if (data->txpower.fixed)
663                 new_power_level = min(data->txpower.value, chan->max_power);
664         else /* Automatic power level setting */
665                 new_power_level = chan->max_power;
666
667         if (local->hw.conf.power_level != new_power_level) {
668                 local->hw.conf.power_level = new_power_level;
669                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
670         }
671
672         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
673                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
674                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
675                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
676         }
677
678         if (reconf_flags)
679                 ieee80211_hw_config(local, reconf_flags);
680
681         return 0;
682 }
683
684 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
685                                    struct iw_request_info *info,
686                                    union iwreq_data *data, char *extra)
687 {
688         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
689
690         data->txpower.fixed = 1;
691         data->txpower.disabled = !(local->hw.conf.radio_enabled);
692         data->txpower.value = local->hw.conf.power_level;
693         data->txpower.flags = IW_TXPOW_DBM;
694
695         return 0;
696 }
697
698 static int ieee80211_ioctl_siwrts(struct net_device *dev,
699                                   struct iw_request_info *info,
700                                   struct iw_param *rts, char *extra)
701 {
702         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
703
704         if (rts->disabled)
705                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
706         else if (!rts->fixed)
707                 /* if the rts value is not fixed, then take default */
708                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
709         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
710                 return -EINVAL;
711         else
712                 local->rts_threshold = rts->value;
713
714         /* If the wlan card performs RTS/CTS in hardware/firmware,
715          * configure it here */
716
717         if (local->ops->set_rts_threshold)
718                 local->ops->set_rts_threshold(local_to_hw(local),
719                                              local->rts_threshold);
720
721         return 0;
722 }
723
724 static int ieee80211_ioctl_giwrts(struct net_device *dev,
725                                   struct iw_request_info *info,
726                                   struct iw_param *rts, char *extra)
727 {
728         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
729
730         rts->value = local->rts_threshold;
731         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
732         rts->fixed = 1;
733
734         return 0;
735 }
736
737
738 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
739                                    struct iw_request_info *info,
740                                    struct iw_param *frag, char *extra)
741 {
742         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
743
744         if (frag->disabled)
745                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
746         else if (!frag->fixed)
747                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
748         else if (frag->value < 256 ||
749                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
750                 return -EINVAL;
751         else {
752                 /* Fragment length must be even, so strip LSB. */
753                 local->fragmentation_threshold = frag->value & ~0x1;
754         }
755
756         /* If the wlan card performs fragmentation in hardware/firmware,
757          * configure it here */
758
759         if (local->ops->set_frag_threshold)
760                 return local->ops->set_frag_threshold(
761                         local_to_hw(local),
762                         local->fragmentation_threshold);
763
764         return 0;
765 }
766
767 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
768                                    struct iw_request_info *info,
769                                    struct iw_param *frag, char *extra)
770 {
771         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
772
773         frag->value = local->fragmentation_threshold;
774         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
775         frag->fixed = 1;
776
777         return 0;
778 }
779
780
781 static int ieee80211_ioctl_siwretry(struct net_device *dev,
782                                     struct iw_request_info *info,
783                                     struct iw_param *retry, char *extra)
784 {
785         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
786
787         if (retry->disabled ||
788             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
789                 return -EINVAL;
790
791         if (retry->flags & IW_RETRY_MAX) {
792                 local->hw.conf.long_frame_max_tx_count = retry->value;
793         } else if (retry->flags & IW_RETRY_MIN) {
794                 local->hw.conf.short_frame_max_tx_count = retry->value;
795         } else {
796                 local->hw.conf.long_frame_max_tx_count = retry->value;
797                 local->hw.conf.short_frame_max_tx_count = retry->value;
798         }
799
800         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
801
802         return 0;
803 }
804
805
806 static int ieee80211_ioctl_giwretry(struct net_device *dev,
807                                     struct iw_request_info *info,
808                                     struct iw_param *retry, char *extra)
809 {
810         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
811
812         retry->disabled = 0;
813         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
814                 /* first return min value, iwconfig will ask max value
815                  * later if needed */
816                 retry->flags |= IW_RETRY_LIMIT;
817                 retry->value = local->hw.conf.short_frame_max_tx_count;
818                 if (local->hw.conf.long_frame_max_tx_count !=
819                     local->hw.conf.short_frame_max_tx_count)
820                         retry->flags |= IW_RETRY_MIN;
821                 return 0;
822         }
823         if (retry->flags & IW_RETRY_MAX) {
824                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
825                 retry->value = local->hw.conf.long_frame_max_tx_count;
826         }
827
828         return 0;
829 }
830
831 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
832                                    struct iw_request_info *info,
833                                    struct iw_point *data, char *extra)
834 {
835         struct ieee80211_sub_if_data *sdata;
836         struct iw_mlme *mlme = (struct iw_mlme *) extra;
837
838         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
839         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
840             sdata->vif.type != NL80211_IFTYPE_ADHOC)
841                 return -EINVAL;
842
843         switch (mlme->cmd) {
844         case IW_MLME_DEAUTH:
845                 /* TODO: mlme->addr.sa_data */
846                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
847         case IW_MLME_DISASSOC:
848                 /* TODO: mlme->addr.sa_data */
849                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
850         default:
851                 return -EOPNOTSUPP;
852         }
853 }
854
855
856 static int ieee80211_ioctl_siwencode(struct net_device *dev,
857                                      struct iw_request_info *info,
858                                      struct iw_point *erq, char *keybuf)
859 {
860         struct ieee80211_sub_if_data *sdata;
861         int idx, i, alg = ALG_WEP;
862         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
863         int remove = 0;
864
865         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
866
867         idx = erq->flags & IW_ENCODE_INDEX;
868         if (idx == 0) {
869                 if (sdata->default_key)
870                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
871                                 if (sdata->default_key == sdata->keys[i]) {
872                                         idx = i;
873                                         break;
874                                 }
875                         }
876         } else if (idx < 1 || idx > 4)
877                 return -EINVAL;
878         else
879                 idx--;
880
881         if (erq->flags & IW_ENCODE_DISABLED)
882                 remove = 1;
883         else if (erq->length == 0) {
884                 /* No key data - just set the default TX key index */
885                 ieee80211_set_default_key(sdata, idx);
886                 return 0;
887         }
888
889         return ieee80211_set_encryption(
890                 sdata, bcaddr,
891                 idx, alg, remove,
892                 !sdata->default_key,
893                 keybuf, erq->length);
894 }
895
896
897 static int ieee80211_ioctl_giwencode(struct net_device *dev,
898                                      struct iw_request_info *info,
899                                      struct iw_point *erq, char *key)
900 {
901         struct ieee80211_sub_if_data *sdata;
902         int idx, i;
903
904         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
905
906         idx = erq->flags & IW_ENCODE_INDEX;
907         if (idx < 1 || idx > 4) {
908                 idx = -1;
909                 if (!sdata->default_key)
910                         idx = 0;
911                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
912                         if (sdata->default_key == sdata->keys[i]) {
913                                 idx = i;
914                                 break;
915                         }
916                 }
917                 if (idx < 0)
918                         return -EINVAL;
919         } else
920                 idx--;
921
922         erq->flags = idx + 1;
923
924         if (!sdata->keys[idx]) {
925                 erq->length = 0;
926                 erq->flags |= IW_ENCODE_DISABLED;
927                 return 0;
928         }
929
930         memcpy(key, sdata->keys[idx]->conf.key,
931                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
932         erq->length = sdata->keys[idx]->conf.keylen;
933         erq->flags |= IW_ENCODE_ENABLED;
934
935         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
936                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
937                 switch (ifsta->auth_alg) {
938                 case WLAN_AUTH_OPEN:
939                 case WLAN_AUTH_LEAP:
940                         erq->flags |= IW_ENCODE_OPEN;
941                         break;
942                 case WLAN_AUTH_SHARED_KEY:
943                         erq->flags |= IW_ENCODE_RESTRICTED;
944                         break;
945                 }
946         }
947
948         return 0;
949 }
950
951 static int ieee80211_ioctl_siwpower(struct net_device *dev,
952                                     struct iw_request_info *info,
953                                     struct iw_param *wrq,
954                                     char *extra)
955 {
956         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
957         struct ieee80211_conf *conf = &local->hw.conf;
958
959         if (wrq->disabled) {
960                 conf->flags &= ~IEEE80211_CONF_PS;
961                 return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
962         }
963
964         switch (wrq->flags & IW_POWER_MODE) {
965         case IW_POWER_ON:       /* If not specified */
966         case IW_POWER_MODE:     /* If set all mask */
967         case IW_POWER_ALL_R:    /* If explicitely state all */
968                 conf->flags |= IEEE80211_CONF_PS;
969                 break;
970         default:                /* Otherwise we don't support it */
971                 return -EINVAL;
972         }
973
974         return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
975 }
976
977 static int ieee80211_ioctl_giwpower(struct net_device *dev,
978                                     struct iw_request_info *info,
979                                     union iwreq_data *wrqu,
980                                     char *extra)
981 {
982         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
983         struct ieee80211_conf *conf = &local->hw.conf;
984
985         wrqu->power.disabled = !(conf->flags & IEEE80211_CONF_PS);
986
987         return 0;
988 }
989
990 static int ieee80211_ioctl_siwauth(struct net_device *dev,
991                                    struct iw_request_info *info,
992                                    struct iw_param *data, char *extra)
993 {
994         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
995         int ret = 0;
996
997         switch (data->flags & IW_AUTH_INDEX) {
998         case IW_AUTH_WPA_VERSION:
999         case IW_AUTH_CIPHER_PAIRWISE:
1000         case IW_AUTH_CIPHER_GROUP:
1001         case IW_AUTH_WPA_ENABLED:
1002         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1003         case IW_AUTH_KEY_MGMT:
1004                 break;
1005         case IW_AUTH_DROP_UNENCRYPTED:
1006                 sdata->drop_unencrypted = !!data->value;
1007                 break;
1008         case IW_AUTH_PRIVACY_INVOKED:
1009                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1010                         ret = -EINVAL;
1011                 else {
1012                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
1013                         /*
1014                          * Privacy invoked by wpa_supplicant, store the
1015                          * value and allow associating to a protected
1016                          * network without having a key up front.
1017                          */
1018                         if (data->value)
1019                                 sdata->u.sta.flags |=
1020                                         IEEE80211_STA_PRIVACY_INVOKED;
1021                 }
1022                 break;
1023         case IW_AUTH_80211_AUTH_ALG:
1024                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1025                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1026                         sdata->u.sta.auth_algs = data->value;
1027                 else
1028                         ret = -EOPNOTSUPP;
1029                 break;
1030         default:
1031                 ret = -EOPNOTSUPP;
1032                 break;
1033         }
1034         return ret;
1035 }
1036
1037 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1038 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
1039 {
1040         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1041         struct iw_statistics *wstats = &local->wstats;
1042         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1043         struct sta_info *sta = NULL;
1044
1045         rcu_read_lock();
1046
1047         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1048             sdata->vif.type == NL80211_IFTYPE_ADHOC)
1049                 sta = sta_info_get(local, sdata->u.sta.bssid);
1050         if (!sta) {
1051                 wstats->discard.fragment = 0;
1052                 wstats->discard.misc = 0;
1053                 wstats->qual.qual = 0;
1054                 wstats->qual.level = 0;
1055                 wstats->qual.noise = 0;
1056                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1057         } else {
1058                 wstats->qual.level = sta->last_signal;
1059                 wstats->qual.qual = sta->last_qual;
1060                 wstats->qual.noise = sta->last_noise;
1061                 wstats->qual.updated = local->wstats_flags;
1062         }
1063
1064         rcu_read_unlock();
1065
1066         return wstats;
1067 }
1068
1069 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1070                                    struct iw_request_info *info,
1071                                    struct iw_param *data, char *extra)
1072 {
1073         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1074         int ret = 0;
1075
1076         switch (data->flags & IW_AUTH_INDEX) {
1077         case IW_AUTH_80211_AUTH_ALG:
1078                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1079                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1080                         data->value = sdata->u.sta.auth_algs;
1081                 else
1082                         ret = -EOPNOTSUPP;
1083                 break;
1084         default:
1085                 ret = -EOPNOTSUPP;
1086                 break;
1087         }
1088         return ret;
1089 }
1090
1091
1092 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1093                                         struct iw_request_info *info,
1094                                         struct iw_point *erq, char *extra)
1095 {
1096         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1097         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1098         int uninitialized_var(alg), idx, i, remove = 0;
1099
1100         switch (ext->alg) {
1101         case IW_ENCODE_ALG_NONE:
1102                 remove = 1;
1103                 break;
1104         case IW_ENCODE_ALG_WEP:
1105                 alg = ALG_WEP;
1106                 break;
1107         case IW_ENCODE_ALG_TKIP:
1108                 alg = ALG_TKIP;
1109                 break;
1110         case IW_ENCODE_ALG_CCMP:
1111                 alg = ALG_CCMP;
1112                 break;
1113         default:
1114                 return -EOPNOTSUPP;
1115         }
1116
1117         if (erq->flags & IW_ENCODE_DISABLED)
1118                 remove = 1;
1119
1120         idx = erq->flags & IW_ENCODE_INDEX;
1121         if (idx < 1 || idx > 4) {
1122                 idx = -1;
1123                 if (!sdata->default_key)
1124                         idx = 0;
1125                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1126                         if (sdata->default_key == sdata->keys[i]) {
1127                                 idx = i;
1128                                 break;
1129                         }
1130                 }
1131                 if (idx < 0)
1132                         return -EINVAL;
1133         } else
1134                 idx--;
1135
1136         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1137                                         remove,
1138                                         ext->ext_flags &
1139                                         IW_ENCODE_EXT_SET_TX_KEY,
1140                                         ext->key, ext->key_len);
1141 }
1142
1143
1144 /* Structures to export the Wireless Handlers */
1145
1146 static const iw_handler ieee80211_handler[] =
1147 {
1148         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1149         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1150         (iw_handler) NULL,                              /* SIOCSIWNWID */
1151         (iw_handler) NULL,                              /* SIOCGIWNWID */
1152         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1153         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1154         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1155         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1156         (iw_handler) NULL,                              /* SIOCSIWSENS */
1157         (iw_handler) NULL,                              /* SIOCGIWSENS */
1158         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1159         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1160         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1161         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1162         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1163         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1164         (iw_handler) NULL,                              /* SIOCSIWSPY */
1165         (iw_handler) NULL,                              /* SIOCGIWSPY */
1166         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1167         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1168         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1169         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1170         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1171         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1172         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1173         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1174         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1175         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1176         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1177         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1178         (iw_handler) NULL,                              /* -- hole -- */
1179         (iw_handler) NULL,                              /* -- hole -- */
1180         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1181         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1182         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1183         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1184         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1185         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1186         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1187         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1188         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1189         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1190         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1191         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1192         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1193         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1194         (iw_handler) NULL,                              /* -- hole -- */
1195         (iw_handler) NULL,                              /* -- hole -- */
1196         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1197         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1198         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1199         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1200         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1201         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1202         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1203         (iw_handler) NULL,                              /* -- hole -- */
1204 };
1205
1206 const struct iw_handler_def ieee80211_iw_handler_def =
1207 {
1208         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1209         .standard       = (iw_handler *) ieee80211_handler,
1210         .get_wireless_stats = ieee80211_get_wireless_stats,
1211 };