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33#include <linux/kmod.h>
34#include <linux/module.h>
35#include <linux/jiffies.h>
36
37#include <net/lib80211.h>
38#include <linux/wireless.h>
39
40#include "libipw.h"
41
42static const char *libipw_modes[] = {
43 "?", "a", "b", "ab", "g", "ag", "bg", "abg"
44};
45
46static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
47{
48 unsigned long end = jiffies;
49
50 if (end >= start)
51 return jiffies_to_msecs(end - start);
52
53 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
54}
55
56#define MAX_CUSTOM_LEN 64
57static char *libipw_translate_scan(struct libipw_device *ieee,
58 char *start, char *stop,
59 struct libipw_network *network,
60 struct iw_request_info *info)
61{
62 char custom[MAX_CUSTOM_LEN];
63 char *p;
64 struct iw_event iwe;
65 int i, j;
66 char *current_val;
67 u8 rate;
68
69
70 iwe.cmd = SIOCGIWAP;
71 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
72 memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
73 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
74
75
76
77
78 iwe.cmd = SIOCGIWESSID;
79 iwe.u.data.flags = 1;
80 iwe.u.data.length = min(network->ssid_len, (u8) 32);
81 start = iwe_stream_add_point(info, start, stop,
82 &iwe, network->ssid);
83
84
85 iwe.cmd = SIOCGIWNAME;
86 snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
87 libipw_modes[network->mode]);
88 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
89
90
91 iwe.cmd = SIOCGIWMODE;
92 if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
93 if (network->capability & WLAN_CAPABILITY_ESS)
94 iwe.u.mode = IW_MODE_MASTER;
95 else
96 iwe.u.mode = IW_MODE_ADHOC;
97
98 start = iwe_stream_add_event(info, start, stop,
99 &iwe, IW_EV_UINT_LEN);
100 }
101
102
103
104 iwe.cmd = SIOCGIWFREQ;
105 iwe.u.freq.m = libipw_channel_to_freq(ieee, network->channel);
106 iwe.u.freq.e = 6;
107 iwe.u.freq.i = 0;
108 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
109
110
111 iwe.cmd = SIOCGIWENCODE;
112 if (network->capability & WLAN_CAPABILITY_PRIVACY)
113 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
114 else
115 iwe.u.data.flags = IW_ENCODE_DISABLED;
116 iwe.u.data.length = 0;
117 start = iwe_stream_add_point(info, start, stop,
118 &iwe, network->ssid);
119
120
121
122
123 current_val = start + iwe_stream_lcp_len(info);
124 iwe.cmd = SIOCGIWRATE;
125
126 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
127
128 for (i = 0, j = 0; i < network->rates_len;) {
129 if (j < network->rates_ex_len &&
130 ((network->rates_ex[j] & 0x7F) <
131 (network->rates[i] & 0x7F)))
132 rate = network->rates_ex[j++] & 0x7F;
133 else
134 rate = network->rates[i++] & 0x7F;
135
136 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
137
138 current_val = iwe_stream_add_value(info, start, current_val,
139 stop, &iwe, IW_EV_PARAM_LEN);
140 }
141 for (; j < network->rates_ex_len; j++) {
142 rate = network->rates_ex[j] & 0x7F;
143
144 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
145
146 current_val = iwe_stream_add_value(info, start, current_val,
147 stop, &iwe, IW_EV_PARAM_LEN);
148 }
149
150 if ((current_val - start) > iwe_stream_lcp_len(info))
151 start = current_val;
152
153
154 iwe.cmd = IWEVQUAL;
155 iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
156 IW_QUAL_NOISE_UPDATED;
157
158 if (!(network->stats.mask & LIBIPW_STATMASK_RSSI)) {
159 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
160 IW_QUAL_LEVEL_INVALID;
161 iwe.u.qual.qual = 0;
162 } else {
163 if (ieee->perfect_rssi == ieee->worst_rssi)
164 iwe.u.qual.qual = 100;
165 else
166 iwe.u.qual.qual =
167 (100 *
168 (ieee->perfect_rssi - ieee->worst_rssi) *
169 (ieee->perfect_rssi - ieee->worst_rssi) -
170 (ieee->perfect_rssi - network->stats.rssi) *
171 (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
172 62 * (ieee->perfect_rssi -
173 network->stats.rssi))) /
174 ((ieee->perfect_rssi -
175 ieee->worst_rssi) * (ieee->perfect_rssi -
176 ieee->worst_rssi));
177 if (iwe.u.qual.qual > 100)
178 iwe.u.qual.qual = 100;
179 else if (iwe.u.qual.qual < 1)
180 iwe.u.qual.qual = 0;
181 }
182
183 if (!(network->stats.mask & LIBIPW_STATMASK_NOISE)) {
184 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
185 iwe.u.qual.noise = 0;
186 } else {
187 iwe.u.qual.noise = network->stats.noise;
188 }
189
190 if (!(network->stats.mask & LIBIPW_STATMASK_SIGNAL)) {
191 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
192 iwe.u.qual.level = 0;
193 } else {
194 iwe.u.qual.level = network->stats.signal;
195 }
196
197 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
198
199 iwe.cmd = IWEVCUSTOM;
200 p = custom;
201
202 iwe.u.data.length = p - custom;
203 if (iwe.u.data.length)
204 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
205
206 memset(&iwe, 0, sizeof(iwe));
207 if (network->wpa_ie_len) {
208 char buf[MAX_WPA_IE_LEN];
209 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
210 iwe.cmd = IWEVGENIE;
211 iwe.u.data.length = network->wpa_ie_len;
212 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
213 }
214
215 memset(&iwe, 0, sizeof(iwe));
216 if (network->rsn_ie_len) {
217 char buf[MAX_WPA_IE_LEN];
218 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
219 iwe.cmd = IWEVGENIE;
220 iwe.u.data.length = network->rsn_ie_len;
221 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
222 }
223
224
225
226 iwe.cmd = IWEVCUSTOM;
227 p = custom;
228 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
229 " Last beacon: %ums ago",
230 elapsed_jiffies_msecs(network->last_scanned));
231 iwe.u.data.length = p - custom;
232 if (iwe.u.data.length)
233 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
234
235
236 iwe.cmd = -1;
237 p = custom;
238 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
239
240 if (libipw_get_channel_flags(ieee, network->channel) &
241 LIBIPW_CH_INVALID) {
242 iwe.cmd = IWEVCUSTOM;
243 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
244 }
245
246 if (libipw_get_channel_flags(ieee, network->channel) &
247 LIBIPW_CH_RADAR_DETECT) {
248 iwe.cmd = IWEVCUSTOM;
249 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
250 }
251
252 if (iwe.cmd == IWEVCUSTOM) {
253 iwe.u.data.length = p - custom;
254 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
255 }
256
257 return start;
258}
259
260#define SCAN_ITEM_SIZE 128
261
262int libipw_wx_get_scan(struct libipw_device *ieee,
263 struct iw_request_info *info,
264 union iwreq_data *wrqu, char *extra)
265{
266 struct libipw_network *network;
267 unsigned long flags;
268 int err = 0;
269
270 char *ev = extra;
271 char *stop = ev + wrqu->data.length;
272 int i = 0;
273 DECLARE_SSID_BUF(ssid);
274
275 LIBIPW_DEBUG_WX("Getting scan\n");
276
277 spin_lock_irqsave(&ieee->lock, flags);
278
279 list_for_each_entry(network, &ieee->network_list, list) {
280 i++;
281 if (stop - ev < SCAN_ITEM_SIZE) {
282 err = -E2BIG;
283 break;
284 }
285
286 if (ieee->scan_age == 0 ||
287 time_after(network->last_scanned + ieee->scan_age, jiffies))
288 ev = libipw_translate_scan(ieee, ev, stop, network,
289 info);
290 else {
291 LIBIPW_DEBUG_SCAN("Not showing network '%s ("
292 "%pM)' due to age (%ums).\n",
293 print_ssid(ssid, network->ssid,
294 network->ssid_len),
295 network->bssid,
296 elapsed_jiffies_msecs(
297 network->last_scanned));
298 }
299 }
300
301 spin_unlock_irqrestore(&ieee->lock, flags);
302
303 wrqu->data.length = ev - extra;
304 wrqu->data.flags = 0;
305
306 LIBIPW_DEBUG_WX("exit: %d networks returned.\n", i);
307
308 return err;
309}
310
311int libipw_wx_set_encode(struct libipw_device *ieee,
312 struct iw_request_info *info,
313 union iwreq_data *wrqu, char *keybuf)
314{
315 struct iw_point *erq = &(wrqu->encoding);
316 struct net_device *dev = ieee->dev;
317 struct libipw_security sec = {
318 .flags = 0
319 };
320 int i, key, key_provided, len;
321 struct lib80211_crypt_data **crypt;
322 int host_crypto = ieee->host_encrypt || ieee->host_decrypt || ieee->host_build_iv;
323 DECLARE_SSID_BUF(ssid);
324
325 LIBIPW_DEBUG_WX("SET_ENCODE\n");
326
327 key = erq->flags & IW_ENCODE_INDEX;
328 if (key) {
329 if (key > WEP_KEYS)
330 return -EINVAL;
331 key--;
332 key_provided = 1;
333 } else {
334 key_provided = 0;
335 key = ieee->crypt_info.tx_keyidx;
336 }
337
338 LIBIPW_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
339 "provided" : "default");
340
341 crypt = &ieee->crypt_info.crypt[key];
342
343 if (erq->flags & IW_ENCODE_DISABLED) {
344 if (key_provided && *crypt) {
345 LIBIPW_DEBUG_WX("Disabling encryption on key %d.\n",
346 key);
347 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
348 } else
349 LIBIPW_DEBUG_WX("Disabling encryption.\n");
350
351
352
353 for (i = 0; i < WEP_KEYS; i++) {
354 if (ieee->crypt_info.crypt[i] != NULL) {
355 if (key_provided)
356 break;
357 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
358 &ieee->crypt_info.crypt[i]);
359 }
360 }
361
362 if (i == WEP_KEYS) {
363 sec.enabled = 0;
364 sec.encrypt = 0;
365 sec.level = SEC_LEVEL_0;
366 sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
367 }
368
369 goto done;
370 }
371
372 sec.enabled = 1;
373 sec.encrypt = 1;
374 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
375
376 if (*crypt != NULL && (*crypt)->ops != NULL &&
377 strcmp((*crypt)->ops->name, "WEP") != 0) {
378
379
380 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
381 }
382
383 if (*crypt == NULL && host_crypto) {
384 struct lib80211_crypt_data *new_crypt;
385
386
387 new_crypt = kzalloc(sizeof(struct lib80211_crypt_data),
388 GFP_KERNEL);
389 if (new_crypt == NULL)
390 return -ENOMEM;
391 new_crypt->ops = lib80211_get_crypto_ops("WEP");
392 if (!new_crypt->ops) {
393 request_module("lib80211_crypt_wep");
394 new_crypt->ops = lib80211_get_crypto_ops("WEP");
395 }
396
397 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
398 new_crypt->priv = new_crypt->ops->init(key);
399
400 if (!new_crypt->ops || !new_crypt->priv) {
401 kfree(new_crypt);
402 new_crypt = NULL;
403
404 printk(KERN_WARNING "%s: could not initialize WEP: "
405 "load module lib80211_crypt_wep\n", dev->name);
406 return -EOPNOTSUPP;
407 }
408 *crypt = new_crypt;
409 }
410
411
412 if (erq->length > 0) {
413#ifdef CONFIG_LIBIPW_DEBUG
414 DECLARE_SSID_BUF(ssid);
415#endif
416
417 len = erq->length <= 5 ? 5 : 13;
418 memcpy(sec.keys[key], keybuf, erq->length);
419 if (len > erq->length)
420 memset(sec.keys[key] + erq->length, 0,
421 len - erq->length);
422 LIBIPW_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
423 key, print_ssid(ssid, sec.keys[key], len),
424 erq->length, len);
425 sec.key_sizes[key] = len;
426 if (*crypt)
427 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
428 (*crypt)->priv);
429 sec.flags |= (1 << key);
430
431
432 if (key == sec.active_key)
433 sec.flags |= SEC_ACTIVE_KEY;
434
435 } else {
436 if (host_crypto) {
437 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
438 NULL, (*crypt)->priv);
439 if (len == 0) {
440
441 LIBIPW_DEBUG_WX("Setting key %d to all "
442 "zero.\n", key);
443 memset(sec.keys[key], 0, 13);
444 (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
445 (*crypt)->priv);
446 sec.key_sizes[key] = 13;
447 sec.flags |= (1 << key);
448 }
449 }
450
451 if (key_provided) {
452 LIBIPW_DEBUG_WX("Setting key %d to default Tx "
453 "key.\n", key);
454 ieee->crypt_info.tx_keyidx = key;
455 sec.active_key = key;
456 sec.flags |= SEC_ACTIVE_KEY;
457 }
458 }
459 if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
460 ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
461 sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
462 WLAN_AUTH_SHARED_KEY;
463 sec.flags |= SEC_AUTH_MODE;
464 LIBIPW_DEBUG_WX("Auth: %s\n",
465 sec.auth_mode == WLAN_AUTH_OPEN ?
466 "OPEN" : "SHARED KEY");
467 }
468
469
470
471 sec.flags |= SEC_LEVEL;
472 sec.level = SEC_LEVEL_1;
473 sec.encode_alg[key] = SEC_ALG_WEP;
474
475 done:
476 if (ieee->set_security)
477 ieee->set_security(dev, &sec);
478
479
480
481
482
483
484 if (ieee->reset_on_keychange &&
485 ieee->iw_mode != IW_MODE_INFRA &&
486 ieee->reset_port && ieee->reset_port(dev)) {
487 printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
488 return -EINVAL;
489 }
490 return 0;
491}
492
493int libipw_wx_get_encode(struct libipw_device *ieee,
494 struct iw_request_info *info,
495 union iwreq_data *wrqu, char *keybuf)
496{
497 struct iw_point *erq = &(wrqu->encoding);
498 int len, key;
499 struct lib80211_crypt_data *crypt;
500 struct libipw_security *sec = &ieee->sec;
501
502 LIBIPW_DEBUG_WX("GET_ENCODE\n");
503
504 key = erq->flags & IW_ENCODE_INDEX;
505 if (key) {
506 if (key > WEP_KEYS)
507 return -EINVAL;
508 key--;
509 } else
510 key = ieee->crypt_info.tx_keyidx;
511
512 crypt = ieee->crypt_info.crypt[key];
513 erq->flags = key + 1;
514
515 if (!sec->enabled) {
516 erq->length = 0;
517 erq->flags |= IW_ENCODE_DISABLED;
518 return 0;
519 }
520
521 len = sec->key_sizes[key];
522 memcpy(keybuf, sec->keys[key], len);
523
524 erq->length = len;
525 erq->flags |= IW_ENCODE_ENABLED;
526
527 if (ieee->open_wep)
528 erq->flags |= IW_ENCODE_OPEN;
529 else
530 erq->flags |= IW_ENCODE_RESTRICTED;
531
532 return 0;
533}
534
535int libipw_wx_set_encodeext(struct libipw_device *ieee,
536 struct iw_request_info *info,
537 union iwreq_data *wrqu, char *extra)
538{
539 struct net_device *dev = ieee->dev;
540 struct iw_point *encoding = &wrqu->encoding;
541 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
542 int i, idx, ret = 0;
543 int group_key = 0;
544 const char *alg, *module;
545 struct lib80211_crypto_ops *ops;
546 struct lib80211_crypt_data **crypt;
547
548 struct libipw_security sec = {
549 .flags = 0,
550 };
551
552 idx = encoding->flags & IW_ENCODE_INDEX;
553 if (idx) {
554 if (idx < 1 || idx > WEP_KEYS)
555 return -EINVAL;
556 idx--;
557 } else
558 idx = ieee->crypt_info.tx_keyidx;
559
560 if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
561 crypt = &ieee->crypt_info.crypt[idx];
562 group_key = 1;
563 } else {
564
565 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
566 return -EINVAL;
567 if (ieee->iw_mode == IW_MODE_INFRA)
568 crypt = &ieee->crypt_info.crypt[idx];
569 else
570 return -EINVAL;
571 }
572
573 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
574 if ((encoding->flags & IW_ENCODE_DISABLED) ||
575 ext->alg == IW_ENCODE_ALG_NONE) {
576 if (*crypt)
577 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
578
579 for (i = 0; i < WEP_KEYS; i++)
580 if (ieee->crypt_info.crypt[i] != NULL)
581 break;
582
583 if (i == WEP_KEYS) {
584 sec.enabled = 0;
585 sec.encrypt = 0;
586 sec.level = SEC_LEVEL_0;
587 sec.flags |= SEC_LEVEL;
588 }
589 goto done;
590 }
591
592 sec.enabled = 1;
593 sec.encrypt = 1;
594
595 if (group_key ? !ieee->host_mc_decrypt :
596 !(ieee->host_encrypt || ieee->host_decrypt ||
597 ieee->host_encrypt_msdu))
598 goto skip_host_crypt;
599
600 switch (ext->alg) {
601 case IW_ENCODE_ALG_WEP:
602 alg = "WEP";
603 module = "lib80211_crypt_wep";
604 break;
605 case IW_ENCODE_ALG_TKIP:
606 alg = "TKIP";
607 module = "lib80211_crypt_tkip";
608 break;
609 case IW_ENCODE_ALG_CCMP:
610 alg = "CCMP";
611 module = "lib80211_crypt_ccmp";
612 break;
613 default:
614 LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
615 dev->name, ext->alg);
616 ret = -EINVAL;
617 goto done;
618 }
619
620 ops = lib80211_get_crypto_ops(alg);
621 if (ops == NULL) {
622 request_module(module);
623 ops = lib80211_get_crypto_ops(alg);
624 }
625 if (ops == NULL) {
626 LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
627 dev->name, ext->alg);
628 ret = -EINVAL;
629 goto done;
630 }
631
632 if (*crypt == NULL || (*crypt)->ops != ops) {
633 struct lib80211_crypt_data *new_crypt;
634
635 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
636
637 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
638 if (new_crypt == NULL) {
639 ret = -ENOMEM;
640 goto done;
641 }
642 new_crypt->ops = ops;
643 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
644 new_crypt->priv = new_crypt->ops->init(idx);
645 if (new_crypt->priv == NULL) {
646 kfree(new_crypt);
647 ret = -EINVAL;
648 goto done;
649 }
650 *crypt = new_crypt;
651 }
652
653 if (ext->key_len > 0 && (*crypt)->ops->set_key &&
654 (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
655 (*crypt)->priv) < 0) {
656 LIBIPW_DEBUG_WX("%s: key setting failed\n", dev->name);
657 ret = -EINVAL;
658 goto done;
659 }
660
661 skip_host_crypt:
662 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
663 ieee->crypt_info.tx_keyidx = idx;
664 sec.active_key = idx;
665 sec.flags |= SEC_ACTIVE_KEY;
666 }
667
668 if (ext->alg != IW_ENCODE_ALG_NONE) {
669 memcpy(sec.keys[idx], ext->key, ext->key_len);
670 sec.key_sizes[idx] = ext->key_len;
671 sec.flags |= (1 << idx);
672 if (ext->alg == IW_ENCODE_ALG_WEP) {
673 sec.encode_alg[idx] = SEC_ALG_WEP;
674 sec.flags |= SEC_LEVEL;
675 sec.level = SEC_LEVEL_1;
676 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
677 sec.encode_alg[idx] = SEC_ALG_TKIP;
678 sec.flags |= SEC_LEVEL;
679 sec.level = SEC_LEVEL_2;
680 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
681 sec.encode_alg[idx] = SEC_ALG_CCMP;
682 sec.flags |= SEC_LEVEL;
683 sec.level = SEC_LEVEL_3;
684 }
685
686 if (group_key)
687 sec.flags &= ~SEC_LEVEL;
688 }
689 done:
690 if (ieee->set_security)
691 ieee->set_security(ieee->dev, &sec);
692
693
694
695
696
697
698
699
700 if (ieee->reset_on_keychange &&
701 ieee->iw_mode != IW_MODE_INFRA &&
702 ieee->reset_port && ieee->reset_port(dev)) {
703 LIBIPW_DEBUG_WX("%s: reset_port failed\n", dev->name);
704 return -EINVAL;
705 }
706
707 return ret;
708}
709
710int libipw_wx_get_encodeext(struct libipw_device *ieee,
711 struct iw_request_info *info,
712 union iwreq_data *wrqu, char *extra)
713{
714 struct iw_point *encoding = &wrqu->encoding;
715 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
716 struct libipw_security *sec = &ieee->sec;
717 int idx, max_key_len;
718
719 max_key_len = encoding->length - sizeof(*ext);
720 if (max_key_len < 0)
721 return -EINVAL;
722
723 idx = encoding->flags & IW_ENCODE_INDEX;
724 if (idx) {
725 if (idx < 1 || idx > WEP_KEYS)
726 return -EINVAL;
727 idx--;
728 } else
729 idx = ieee->crypt_info.tx_keyidx;
730
731 if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
732 ext->alg != IW_ENCODE_ALG_WEP)
733 if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
734 return -EINVAL;
735
736 encoding->flags = idx + 1;
737 memset(ext, 0, sizeof(*ext));
738
739 if (!sec->enabled) {
740 ext->alg = IW_ENCODE_ALG_NONE;
741 ext->key_len = 0;
742 encoding->flags |= IW_ENCODE_DISABLED;
743 } else {
744 if (sec->encode_alg[idx] == SEC_ALG_WEP)
745 ext->alg = IW_ENCODE_ALG_WEP;
746 else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
747 ext->alg = IW_ENCODE_ALG_TKIP;
748 else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
749 ext->alg = IW_ENCODE_ALG_CCMP;
750 else
751 return -EINVAL;
752
753 ext->key_len = sec->key_sizes[idx];
754 memcpy(ext->key, sec->keys[idx], ext->key_len);
755 encoding->flags |= IW_ENCODE_ENABLED;
756 if (ext->key_len &&
757 (ext->alg == IW_ENCODE_ALG_TKIP ||
758 ext->alg == IW_ENCODE_ALG_CCMP))
759 ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
760
761 }
762
763 return 0;
764}
765
766EXPORT_SYMBOL(libipw_wx_set_encodeext);
767EXPORT_SYMBOL(libipw_wx_get_encodeext);
768
769EXPORT_SYMBOL(libipw_wx_get_scan);
770EXPORT_SYMBOL(libipw_wx_set_encode);
771EXPORT_SYMBOL(libipw_wx_get_encode);
772
