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33#include <linux/kmod.h>
34#include <linux/module.h>
35#include <linux/jiffies.h>
36
37#include <net/ieee80211.h>
38#include <linux/wireless.h>
39
40static const char *ieee80211_modes[] = {
41 "?", "a", "b", "ab", "g", "ag", "bg", "abg"
42};
43
44#define MAX_CUSTOM_LEN 64
45static char *ieee80211_translate_scan(struct ieee80211_device *ieee,
46 char *start, char *stop,
47 struct ieee80211_network *network,
48 struct iw_request_info *info)
49{
50 char custom[MAX_CUSTOM_LEN];
51 char *p;
52 struct iw_event iwe;
53 int i, j;
54 char *current_val;
55 u8 rate;
56
57
58 iwe.cmd = SIOCGIWAP;
59 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
60 memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
61 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
62
63
64
65
66 iwe.cmd = SIOCGIWESSID;
67 iwe.u.data.flags = 1;
68 if (network->flags & NETWORK_EMPTY_ESSID) {
69 iwe.u.data.length = sizeof("<hidden>");
70 start = iwe_stream_add_point(info, start, stop,
71 &iwe, "<hidden>");
72 } else {
73 iwe.u.data.length = min(network->ssid_len, (u8) 32);
74 start = iwe_stream_add_point(info, start, stop,
75 &iwe, network->ssid);
76 }
77
78
79 iwe.cmd = SIOCGIWNAME;
80 snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
81 ieee80211_modes[network->mode]);
82 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
83
84
85 iwe.cmd = SIOCGIWMODE;
86 if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
87 if (network->capability & WLAN_CAPABILITY_ESS)
88 iwe.u.mode = IW_MODE_MASTER;
89 else
90 iwe.u.mode = IW_MODE_ADHOC;
91
92 start = iwe_stream_add_event(info, start, stop,
93 &iwe, IW_EV_UINT_LEN);
94 }
95
96
97
98 iwe.cmd = SIOCGIWFREQ;
99 iwe.u.freq.m = ieee80211_channel_to_freq(ieee, network->channel);
100 iwe.u.freq.e = 6;
101 iwe.u.freq.i = 0;
102 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
103
104
105 iwe.cmd = SIOCGIWENCODE;
106 if (network->capability & WLAN_CAPABILITY_PRIVACY)
107 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
108 else
109 iwe.u.data.flags = IW_ENCODE_DISABLED;
110 iwe.u.data.length = 0;
111 start = iwe_stream_add_point(info, start, stop,
112 &iwe, network->ssid);
113
114
115
116
117 current_val = start + iwe_stream_lcp_len(info);
118 iwe.cmd = SIOCGIWRATE;
119
120 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
121
122 for (i = 0, j = 0; i < network->rates_len;) {
123 if (j < network->rates_ex_len &&
124 ((network->rates_ex[j] & 0x7F) <
125 (network->rates[i] & 0x7F)))
126 rate = network->rates_ex[j++] & 0x7F;
127 else
128 rate = network->rates[i++] & 0x7F;
129
130 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
131
132 current_val = iwe_stream_add_value(info, start, current_val,
133 stop, &iwe, IW_EV_PARAM_LEN);
134 }
135 for (; j < network->rates_ex_len; j++) {
136 rate = network->rates_ex[j] & 0x7F;
137
138 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
139
140 current_val = iwe_stream_add_value(info, start, current_val,
141 stop, &iwe, IW_EV_PARAM_LEN);
142 }
143
144 if ((current_val - start) > iwe_stream_lcp_len(info))
145 start = current_val;
146
147
148 iwe.cmd = IWEVQUAL;
149 iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
150 IW_QUAL_NOISE_UPDATED;
151
152 if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
153 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
154 IW_QUAL_LEVEL_INVALID;
155 iwe.u.qual.qual = 0;
156 } else {
157 if (ieee->perfect_rssi == ieee->worst_rssi)
158 iwe.u.qual.qual = 100;
159 else
160 iwe.u.qual.qual =
161 (100 *
162 (ieee->perfect_rssi - ieee->worst_rssi) *
163 (ieee->perfect_rssi - ieee->worst_rssi) -
164 (ieee->perfect_rssi - network->stats.rssi) *
165 (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
166 62 * (ieee->perfect_rssi -
167 network->stats.rssi))) /
168 ((ieee->perfect_rssi -
169 ieee->worst_rssi) * (ieee->perfect_rssi -
170 ieee->worst_rssi));
171 if (iwe.u.qual.qual > 100)
172 iwe.u.qual.qual = 100;
173 else if (iwe.u.qual.qual < 1)
174 iwe.u.qual.qual = 0;
175 }
176
177 if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
178 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
179 iwe.u.qual.noise = 0;
180 } else {
181 iwe.u.qual.noise = network->stats.noise;
182 }
183
184 if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) {
185 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
186 iwe.u.qual.level = 0;
187 } else {
188 iwe.u.qual.level = network->stats.signal;
189 }
190
191 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
192
193 iwe.cmd = IWEVCUSTOM;
194 p = custom;
195
196 iwe.u.data.length = p - custom;
197 if (iwe.u.data.length)
198 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
199
200 memset(&iwe, 0, sizeof(iwe));
201 if (network->wpa_ie_len) {
202 char buf[MAX_WPA_IE_LEN];
203 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
204 iwe.cmd = IWEVGENIE;
205 iwe.u.data.length = network->wpa_ie_len;
206 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
207 }
208
209 memset(&iwe, 0, sizeof(iwe));
210 if (network->rsn_ie_len) {
211 char buf[MAX_WPA_IE_LEN];
212 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
213 iwe.cmd = IWEVGENIE;
214 iwe.u.data.length = network->rsn_ie_len;
215 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
216 }
217
218
219
220 iwe.cmd = IWEVCUSTOM;
221 p = custom;
222 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
223 " Last beacon: %dms ago",
224 jiffies_to_msecs(jiffies - network->last_scanned));
225 iwe.u.data.length = p - custom;
226 if (iwe.u.data.length)
227 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
228
229
230 iwe.cmd = -1;
231 p = custom;
232 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
233
234 if (ieee80211_get_channel_flags(ieee, network->channel) &
235 IEEE80211_CH_INVALID) {
236 iwe.cmd = IWEVCUSTOM;
237 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
238 }
239
240 if (ieee80211_get_channel_flags(ieee, network->channel) &
241 IEEE80211_CH_RADAR_DETECT) {
242 iwe.cmd = IWEVCUSTOM;
243 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
244 }
245
246 if (iwe.cmd == IWEVCUSTOM) {
247 iwe.u.data.length = p - custom;
248 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
249 }
250
251 return start;
252}
253
254#define SCAN_ITEM_SIZE 128
255
256int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
257 struct iw_request_info *info,
258 union iwreq_data *wrqu, char *extra)
259{
260 struct ieee80211_network *network;
261 unsigned long flags;
262 int err = 0;
263
264 char *ev = extra;
265 char *stop = ev + wrqu->data.length;
266 int i = 0;
267 DECLARE_MAC_BUF(mac);
268
269 IEEE80211_DEBUG_WX("Getting scan\n");
270
271 spin_lock_irqsave(&ieee->lock, flags);
272
273 list_for_each_entry(network, &ieee->network_list, list) {
274 i++;
275 if (stop - ev < SCAN_ITEM_SIZE) {
276 err = -E2BIG;
277 break;
278 }
279
280 if (ieee->scan_age == 0 ||
281 time_after(network->last_scanned + ieee->scan_age, jiffies))
282 ev = ieee80211_translate_scan(ieee, ev, stop, network,
283 info);
284 else
285 IEEE80211_DEBUG_SCAN("Not showing network '%s ("
286 "%s)' due to age (%dms).\n",
287 escape_essid(network->ssid,
288 network->ssid_len),
289 print_mac(mac, network->bssid),
290 jiffies_to_msecs(jiffies -
291 network->
292 last_scanned));
293 }
294
295 spin_unlock_irqrestore(&ieee->lock, flags);
296
297 wrqu->data.length = ev - extra;
298 wrqu->data.flags = 0;
299
300 IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);
301
302 return err;
303}
304
305int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
306 struct iw_request_info *info,
307 union iwreq_data *wrqu, char *keybuf)
308{
309 struct iw_point *erq = &(wrqu->encoding);
310 struct net_device *dev = ieee->dev;
311 struct ieee80211_security sec = {
312 .flags = 0
313 };
314 int i, key, key_provided, len;
315 struct ieee80211_crypt_data **crypt;
316 int host_crypto = ieee->host_encrypt || ieee->host_decrypt || ieee->host_build_iv;
317
318 IEEE80211_DEBUG_WX("SET_ENCODE\n");
319
320 key = erq->flags & IW_ENCODE_INDEX;
321 if (key) {
322 if (key > WEP_KEYS)
323 return -EINVAL;
324 key--;
325 key_provided = 1;
326 } else {
327 key_provided = 0;
328 key = ieee->tx_keyidx;
329 }
330
331 IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
332 "provided" : "default");
333
334 crypt = &ieee->crypt[key];
335
336 if (erq->flags & IW_ENCODE_DISABLED) {
337 if (key_provided && *crypt) {
338 IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
339 key);
340 ieee80211_crypt_delayed_deinit(ieee, crypt);
341 } else
342 IEEE80211_DEBUG_WX("Disabling encryption.\n");
343
344
345
346 for (i = 0; i < WEP_KEYS; i++) {
347 if (ieee->crypt[i] != NULL) {
348 if (key_provided)
349 break;
350 ieee80211_crypt_delayed_deinit(ieee,
351 &ieee->crypt[i]);
352 }
353 }
354
355 if (i == WEP_KEYS) {
356 sec.enabled = 0;
357 sec.encrypt = 0;
358 sec.level = SEC_LEVEL_0;
359 sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
360 }
361
362 goto done;
363 }
364
365 sec.enabled = 1;
366 sec.encrypt = 1;
367 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
368
369 if (*crypt != NULL && (*crypt)->ops != NULL &&
370 strcmp((*crypt)->ops->name, "WEP") != 0) {
371
372
373 ieee80211_crypt_delayed_deinit(ieee, crypt);
374 }
375
376 if (*crypt == NULL && host_crypto) {
377 struct ieee80211_crypt_data *new_crypt;
378
379
380 new_crypt = kzalloc(sizeof(struct ieee80211_crypt_data),
381 GFP_KERNEL);
382 if (new_crypt == NULL)
383 return -ENOMEM;
384 new_crypt->ops = ieee80211_get_crypto_ops("WEP");
385 if (!new_crypt->ops) {
386 request_module("ieee80211_crypt_wep");
387 new_crypt->ops = ieee80211_get_crypto_ops("WEP");
388 }
389
390 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
391 new_crypt->priv = new_crypt->ops->init(key);
392
393 if (!new_crypt->ops || !new_crypt->priv) {
394 kfree(new_crypt);
395 new_crypt = NULL;
396
397 printk(KERN_WARNING "%s: could not initialize WEP: "
398 "load module ieee80211_crypt_wep\n", dev->name);
399 return -EOPNOTSUPP;
400 }
401 *crypt = new_crypt;
402 }
403
404
405 if (erq->length > 0) {
406 len = erq->length <= 5 ? 5 : 13;
407 memcpy(sec.keys[key], keybuf, erq->length);
408 if (len > erq->length)
409 memset(sec.keys[key] + erq->length, 0,
410 len - erq->length);
411 IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
412 key, escape_essid(sec.keys[key], len),
413 erq->length, len);
414 sec.key_sizes[key] = len;
415 if (*crypt)
416 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
417 (*crypt)->priv);
418 sec.flags |= (1 << key);
419
420
421 if (key == sec.active_key)
422 sec.flags |= SEC_ACTIVE_KEY;
423
424 } else {
425 if (host_crypto) {
426 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
427 NULL, (*crypt)->priv);
428 if (len == 0) {
429
430 IEEE80211_DEBUG_WX("Setting key %d to all "
431 "zero.\n", key);
432 memset(sec.keys[key], 0, 13);
433 (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
434 (*crypt)->priv);
435 sec.key_sizes[key] = 13;
436 sec.flags |= (1 << key);
437 }
438 }
439
440 if (key_provided) {
441 IEEE80211_DEBUG_WX("Setting key %d to default Tx "
442 "key.\n", key);
443 ieee->tx_keyidx = key;
444 sec.active_key = key;
445 sec.flags |= SEC_ACTIVE_KEY;
446 }
447 }
448 if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
449 ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
450 sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
451 WLAN_AUTH_SHARED_KEY;
452 sec.flags |= SEC_AUTH_MODE;
453 IEEE80211_DEBUG_WX("Auth: %s\n",
454 sec.auth_mode == WLAN_AUTH_OPEN ?
455 "OPEN" : "SHARED KEY");
456 }
457
458
459
460 sec.flags |= SEC_LEVEL;
461 sec.level = SEC_LEVEL_1;
462 sec.encode_alg[key] = SEC_ALG_WEP;
463
464 done:
465 if (ieee->set_security)
466 ieee->set_security(dev, &sec);
467
468
469
470
471
472
473 if (ieee->reset_on_keychange &&
474 ieee->iw_mode != IW_MODE_INFRA &&
475 ieee->reset_port && ieee->reset_port(dev)) {
476 printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
477 return -EINVAL;
478 }
479 return 0;
480}
481
482int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
483 struct iw_request_info *info,
484 union iwreq_data *wrqu, char *keybuf)
485{
486 struct iw_point *erq = &(wrqu->encoding);
487 int len, key;
488 struct ieee80211_crypt_data *crypt;
489 struct ieee80211_security *sec = &ieee->sec;
490
491 IEEE80211_DEBUG_WX("GET_ENCODE\n");
492
493 key = erq->flags & IW_ENCODE_INDEX;
494 if (key) {
495 if (key > WEP_KEYS)
496 return -EINVAL;
497 key--;
498 } else
499 key = ieee->tx_keyidx;
500
501 crypt = ieee->crypt[key];
502 erq->flags = key + 1;
503
504 if (!sec->enabled) {
505 erq->length = 0;
506 erq->flags |= IW_ENCODE_DISABLED;
507 return 0;
508 }
509
510 len = sec->key_sizes[key];
511 memcpy(keybuf, sec->keys[key], len);
512
513 erq->length = len;
514 erq->flags |= IW_ENCODE_ENABLED;
515
516 if (ieee->open_wep)
517 erq->flags |= IW_ENCODE_OPEN;
518 else
519 erq->flags |= IW_ENCODE_RESTRICTED;
520
521 return 0;
522}
523
524int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
525 struct iw_request_info *info,
526 union iwreq_data *wrqu, char *extra)
527{
528 struct net_device *dev = ieee->dev;
529 struct iw_point *encoding = &wrqu->encoding;
530 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
531 int i, idx, ret = 0;
532 int group_key = 0;
533 const char *alg, *module;
534 struct ieee80211_crypto_ops *ops;
535 struct ieee80211_crypt_data **crypt;
536
537 struct ieee80211_security sec = {
538 .flags = 0,
539 };
540
541 idx = encoding->flags & IW_ENCODE_INDEX;
542 if (idx) {
543 if (idx < 1 || idx > WEP_KEYS)
544 return -EINVAL;
545 idx--;
546 } else
547 idx = ieee->tx_keyidx;
548
549 if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
550 crypt = &ieee->crypt[idx];
551 group_key = 1;
552 } else {
553
554 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
555 return -EINVAL;
556 if (ieee->iw_mode == IW_MODE_INFRA)
557 crypt = &ieee->crypt[idx];
558 else
559 return -EINVAL;
560 }
561
562 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
563 if ((encoding->flags & IW_ENCODE_DISABLED) ||
564 ext->alg == IW_ENCODE_ALG_NONE) {
565 if (*crypt)
566 ieee80211_crypt_delayed_deinit(ieee, crypt);
567
568 for (i = 0; i < WEP_KEYS; i++)
569 if (ieee->crypt[i] != NULL)
570 break;
571
572 if (i == WEP_KEYS) {
573 sec.enabled = 0;
574 sec.encrypt = 0;
575 sec.level = SEC_LEVEL_0;
576 sec.flags |= SEC_LEVEL;
577 }
578 goto done;
579 }
580
581 sec.enabled = 1;
582 sec.encrypt = 1;
583
584 if (group_key ? !ieee->host_mc_decrypt :
585 !(ieee->host_encrypt || ieee->host_decrypt ||
586 ieee->host_encrypt_msdu))
587 goto skip_host_crypt;
588
589 switch (ext->alg) {
590 case IW_ENCODE_ALG_WEP:
591 alg = "WEP";
592 module = "ieee80211_crypt_wep";
593 break;
594 case IW_ENCODE_ALG_TKIP:
595 alg = "TKIP";
596 module = "ieee80211_crypt_tkip";
597 break;
598 case IW_ENCODE_ALG_CCMP:
599 alg = "CCMP";
600 module = "ieee80211_crypt_ccmp";
601 break;
602 default:
603 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
604 dev->name, ext->alg);
605 ret = -EINVAL;
606 goto done;
607 }
608
609 ops = ieee80211_get_crypto_ops(alg);
610 if (ops == NULL) {
611 request_module(module);
612 ops = ieee80211_get_crypto_ops(alg);
613 }
614 if (ops == NULL) {
615 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
616 dev->name, ext->alg);
617 ret = -EINVAL;
618 goto done;
619 }
620
621 if (*crypt == NULL || (*crypt)->ops != ops) {
622 struct ieee80211_crypt_data *new_crypt;
623
624 ieee80211_crypt_delayed_deinit(ieee, crypt);
625
626 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
627 if (new_crypt == NULL) {
628 ret = -ENOMEM;
629 goto done;
630 }
631 new_crypt->ops = ops;
632 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
633 new_crypt->priv = new_crypt->ops->init(idx);
634 if (new_crypt->priv == NULL) {
635 kfree(new_crypt);
636 ret = -EINVAL;
637 goto done;
638 }
639 *crypt = new_crypt;
640 }
641
642 if (ext->key_len > 0 && (*crypt)->ops->set_key &&
643 (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
644 (*crypt)->priv) < 0) {
645 IEEE80211_DEBUG_WX("%s: key setting failed\n", dev->name);
646 ret = -EINVAL;
647 goto done;
648 }
649
650 skip_host_crypt:
651 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
652 ieee->tx_keyidx = idx;
653 sec.active_key = idx;
654 sec.flags |= SEC_ACTIVE_KEY;
655 }
656
657 if (ext->alg != IW_ENCODE_ALG_NONE) {
658 memcpy(sec.keys[idx], ext->key, ext->key_len);
659 sec.key_sizes[idx] = ext->key_len;
660 sec.flags |= (1 << idx);
661 if (ext->alg == IW_ENCODE_ALG_WEP) {
662 sec.encode_alg[idx] = SEC_ALG_WEP;
663 sec.flags |= SEC_LEVEL;
664 sec.level = SEC_LEVEL_1;
665 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
666 sec.encode_alg[idx] = SEC_ALG_TKIP;
667 sec.flags |= SEC_LEVEL;
668 sec.level = SEC_LEVEL_2;
669 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
670 sec.encode_alg[idx] = SEC_ALG_CCMP;
671 sec.flags |= SEC_LEVEL;
672 sec.level = SEC_LEVEL_3;
673 }
674
675 if (group_key)
676 sec.flags &= ~SEC_LEVEL;
677 }
678 done:
679 if (ieee->set_security)
680 ieee->set_security(ieee->dev, &sec);
681
682
683
684
685
686
687
688
689 if (ieee->reset_on_keychange &&
690 ieee->iw_mode != IW_MODE_INFRA &&
691 ieee->reset_port && ieee->reset_port(dev)) {
692 IEEE80211_DEBUG_WX("%s: reset_port failed\n", dev->name);
693 return -EINVAL;
694 }
695
696 return ret;
697}
698
699int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
700 struct iw_request_info *info,
701 union iwreq_data *wrqu, char *extra)
702{
703 struct iw_point *encoding = &wrqu->encoding;
704 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
705 struct ieee80211_security *sec = &ieee->sec;
706 int idx, max_key_len;
707
708 max_key_len = encoding->length - sizeof(*ext);
709 if (max_key_len < 0)
710 return -EINVAL;
711
712 idx = encoding->flags & IW_ENCODE_INDEX;
713 if (idx) {
714 if (idx < 1 || idx > WEP_KEYS)
715 return -EINVAL;
716 idx--;
717 } else
718 idx = ieee->tx_keyidx;
719
720 if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
721 ext->alg != IW_ENCODE_ALG_WEP)
722 if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
723 return -EINVAL;
724
725 encoding->flags = idx + 1;
726 memset(ext, 0, sizeof(*ext));
727
728 if (!sec->enabled) {
729 ext->alg = IW_ENCODE_ALG_NONE;
730 ext->key_len = 0;
731 encoding->flags |= IW_ENCODE_DISABLED;
732 } else {
733 if (sec->encode_alg[idx] == SEC_ALG_WEP)
734 ext->alg = IW_ENCODE_ALG_WEP;
735 else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
736 ext->alg = IW_ENCODE_ALG_TKIP;
737 else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
738 ext->alg = IW_ENCODE_ALG_CCMP;
739 else
740 return -EINVAL;
741
742 ext->key_len = sec->key_sizes[idx];
743 memcpy(ext->key, sec->keys[idx], ext->key_len);
744 encoding->flags |= IW_ENCODE_ENABLED;
745 if (ext->key_len &&
746 (ext->alg == IW_ENCODE_ALG_TKIP ||
747 ext->alg == IW_ENCODE_ALG_CCMP))
748 ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
749
750 }
751
752 return 0;
753}
754
755EXPORT_SYMBOL(ieee80211_wx_set_encodeext);
756EXPORT_SYMBOL(ieee80211_wx_get_encodeext);
757
758EXPORT_SYMBOL(ieee80211_wx_get_scan);
759EXPORT_SYMBOL(ieee80211_wx_set_encode);
760EXPORT_SYMBOL(ieee80211_wx_get_encode);