This source file includes following definitions.
- elapsed_jiffies_msecs
- libipw_translate_scan
- libipw_wx_get_scan
- libipw_wx_set_encode
- libipw_wx_get_encode
- libipw_wx_set_encodeext
- libipw_wx_get_encodeext
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19 #include <linux/hardirq.h>
20 #include <linux/kmod.h>
21 #include <linux/slab.h>
22 #include <linux/module.h>
23 #include <linux/jiffies.h>
24
25 #include <net/lib80211.h>
26 #include <linux/wireless.h>
27
28 #include "libipw.h"
29
30 static const char *libipw_modes[] = {
31 "?", "a", "b", "ab", "g", "ag", "bg", "abg"
32 };
33
34 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
35 {
36 unsigned long end = jiffies;
37
38 if (end >= start)
39 return jiffies_to_msecs(end - start);
40
41 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
42 }
43
44 #define MAX_CUSTOM_LEN 64
45 static char *libipw_translate_scan(struct libipw_device *ieee,
46 char *start, char *stop,
47 struct libipw_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 iwe.u.data.length = min(network->ssid_len, (u8) 32);
69 start = iwe_stream_add_point(info, start, stop,
70 &iwe, network->ssid);
71
72
73 iwe.cmd = SIOCGIWNAME;
74 snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
75 libipw_modes[network->mode]);
76 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
77
78
79 iwe.cmd = SIOCGIWMODE;
80 if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
81 if (network->capability & WLAN_CAPABILITY_ESS)
82 iwe.u.mode = IW_MODE_MASTER;
83 else
84 iwe.u.mode = IW_MODE_ADHOC;
85
86 start = iwe_stream_add_event(info, start, stop,
87 &iwe, IW_EV_UINT_LEN);
88 }
89
90
91
92 iwe.cmd = SIOCGIWFREQ;
93 iwe.u.freq.m = libipw_channel_to_freq(ieee, network->channel);
94 iwe.u.freq.e = 6;
95 iwe.u.freq.i = 0;
96 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
97
98
99 iwe.cmd = SIOCGIWENCODE;
100 if (network->capability & WLAN_CAPABILITY_PRIVACY)
101 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
102 else
103 iwe.u.data.flags = IW_ENCODE_DISABLED;
104 iwe.u.data.length = 0;
105 start = iwe_stream_add_point(info, start, stop,
106 &iwe, network->ssid);
107
108
109
110
111 current_val = start + iwe_stream_lcp_len(info);
112 iwe.cmd = SIOCGIWRATE;
113
114 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
115
116 for (i = 0, j = 0; i < network->rates_len;) {
117 if (j < network->rates_ex_len &&
118 ((network->rates_ex[j] & 0x7F) <
119 (network->rates[i] & 0x7F)))
120 rate = network->rates_ex[j++] & 0x7F;
121 else
122 rate = network->rates[i++] & 0x7F;
123
124 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
125
126 current_val = iwe_stream_add_value(info, start, current_val,
127 stop, &iwe, IW_EV_PARAM_LEN);
128 }
129 for (; j < network->rates_ex_len; j++) {
130 rate = network->rates_ex[j] & 0x7F;
131
132 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
133
134 current_val = iwe_stream_add_value(info, start, current_val,
135 stop, &iwe, IW_EV_PARAM_LEN);
136 }
137
138 if ((current_val - start) > iwe_stream_lcp_len(info))
139 start = current_val;
140
141
142 iwe.cmd = IWEVQUAL;
143 iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
144 IW_QUAL_NOISE_UPDATED;
145
146 if (!(network->stats.mask & LIBIPW_STATMASK_RSSI)) {
147 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
148 IW_QUAL_LEVEL_INVALID;
149 iwe.u.qual.qual = 0;
150 } else {
151 if (ieee->perfect_rssi == ieee->worst_rssi)
152 iwe.u.qual.qual = 100;
153 else
154 iwe.u.qual.qual =
155 (100 *
156 (ieee->perfect_rssi - ieee->worst_rssi) *
157 (ieee->perfect_rssi - ieee->worst_rssi) -
158 (ieee->perfect_rssi - network->stats.rssi) *
159 (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
160 62 * (ieee->perfect_rssi -
161 network->stats.rssi))) /
162 ((ieee->perfect_rssi -
163 ieee->worst_rssi) * (ieee->perfect_rssi -
164 ieee->worst_rssi));
165 if (iwe.u.qual.qual > 100)
166 iwe.u.qual.qual = 100;
167 else if (iwe.u.qual.qual < 1)
168 iwe.u.qual.qual = 0;
169 }
170
171 if (!(network->stats.mask & LIBIPW_STATMASK_NOISE)) {
172 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
173 iwe.u.qual.noise = 0;
174 } else {
175 iwe.u.qual.noise = network->stats.noise;
176 }
177
178 if (!(network->stats.mask & LIBIPW_STATMASK_SIGNAL)) {
179 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
180 iwe.u.qual.level = 0;
181 } else {
182 iwe.u.qual.level = network->stats.signal;
183 }
184
185 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
186
187 iwe.cmd = IWEVCUSTOM;
188 p = custom;
189
190 iwe.u.data.length = p - custom;
191 if (iwe.u.data.length)
192 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
193
194 memset(&iwe, 0, sizeof(iwe));
195 if (network->wpa_ie_len) {
196 char buf[MAX_WPA_IE_LEN];
197 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
198 iwe.cmd = IWEVGENIE;
199 iwe.u.data.length = network->wpa_ie_len;
200 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
201 }
202
203 memset(&iwe, 0, sizeof(iwe));
204 if (network->rsn_ie_len) {
205 char buf[MAX_WPA_IE_LEN];
206 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
207 iwe.cmd = IWEVGENIE;
208 iwe.u.data.length = network->rsn_ie_len;
209 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
210 }
211
212
213
214 iwe.cmd = IWEVCUSTOM;
215 p = custom;
216 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
217 " Last beacon: %ums ago",
218 elapsed_jiffies_msecs(network->last_scanned));
219 iwe.u.data.length = p - custom;
220 if (iwe.u.data.length)
221 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
222
223
224 iwe.cmd = -1;
225 p = custom;
226 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
227
228 if (libipw_get_channel_flags(ieee, network->channel) &
229 LIBIPW_CH_INVALID) {
230 iwe.cmd = IWEVCUSTOM;
231 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
232 }
233
234 if (libipw_get_channel_flags(ieee, network->channel) &
235 LIBIPW_CH_RADAR_DETECT) {
236 iwe.cmd = IWEVCUSTOM;
237 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
238 }
239
240 if (iwe.cmd == IWEVCUSTOM) {
241 iwe.u.data.length = p - custom;
242 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
243 }
244
245 return start;
246 }
247
248 #define SCAN_ITEM_SIZE 128
249
250 int libipw_wx_get_scan(struct libipw_device *ieee,
251 struct iw_request_info *info,
252 union iwreq_data *wrqu, char *extra)
253 {
254 struct libipw_network *network;
255 unsigned long flags;
256 int err = 0;
257
258 char *ev = extra;
259 char *stop = ev + wrqu->data.length;
260 int i = 0;
261
262 LIBIPW_DEBUG_WX("Getting scan\n");
263
264 spin_lock_irqsave(&ieee->lock, flags);
265
266 list_for_each_entry(network, &ieee->network_list, list) {
267 i++;
268 if (stop - ev < SCAN_ITEM_SIZE) {
269 err = -E2BIG;
270 break;
271 }
272
273 if (ieee->scan_age == 0 ||
274 time_after(network->last_scanned + ieee->scan_age, jiffies))
275 ev = libipw_translate_scan(ieee, ev, stop, network,
276 info);
277 else {
278 LIBIPW_DEBUG_SCAN("Not showing network '%*pE (%pM)' due to age (%ums).\n",
279 network->ssid_len, network->ssid,
280 network->bssid,
281 elapsed_jiffies_msecs(
282 network->last_scanned));
283 }
284 }
285
286 spin_unlock_irqrestore(&ieee->lock, flags);
287
288 wrqu->data.length = ev - extra;
289 wrqu->data.flags = 0;
290
291 LIBIPW_DEBUG_WX("exit: %d networks returned.\n", i);
292
293 return err;
294 }
295
296 int libipw_wx_set_encode(struct libipw_device *ieee,
297 struct iw_request_info *info,
298 union iwreq_data *wrqu, char *keybuf)
299 {
300 struct iw_point *erq = &(wrqu->encoding);
301 struct net_device *dev = ieee->dev;
302 struct libipw_security sec = {
303 .flags = 0
304 };
305 int i, key, key_provided, len;
306 struct lib80211_crypt_data **crypt;
307 int host_crypto = ieee->host_encrypt || ieee->host_decrypt;
308
309 LIBIPW_DEBUG_WX("SET_ENCODE\n");
310
311 key = erq->flags & IW_ENCODE_INDEX;
312 if (key) {
313 if (key > WEP_KEYS)
314 return -EINVAL;
315 key--;
316 key_provided = 1;
317 } else {
318 key_provided = 0;
319 key = ieee->crypt_info.tx_keyidx;
320 }
321
322 LIBIPW_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
323 "provided" : "default");
324
325 crypt = &ieee->crypt_info.crypt[key];
326
327 if (erq->flags & IW_ENCODE_DISABLED) {
328 if (key_provided && *crypt) {
329 LIBIPW_DEBUG_WX("Disabling encryption on key %d.\n",
330 key);
331 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
332 } else
333 LIBIPW_DEBUG_WX("Disabling encryption.\n");
334
335
336
337 for (i = 0; i < WEP_KEYS; i++) {
338 if (ieee->crypt_info.crypt[i] != NULL) {
339 if (key_provided)
340 break;
341 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
342 &ieee->crypt_info.crypt[i]);
343 }
344 }
345
346 if (i == WEP_KEYS) {
347 sec.enabled = 0;
348 sec.encrypt = 0;
349 sec.level = SEC_LEVEL_0;
350 sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
351 }
352
353 goto done;
354 }
355
356 sec.enabled = 1;
357 sec.encrypt = 1;
358 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
359
360 if (*crypt != NULL && (*crypt)->ops != NULL &&
361 strcmp((*crypt)->ops->name, "WEP") != 0) {
362
363
364 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
365 }
366
367 if (*crypt == NULL && host_crypto) {
368 struct lib80211_crypt_data *new_crypt;
369
370
371 new_crypt = kzalloc(sizeof(struct lib80211_crypt_data),
372 GFP_KERNEL);
373 if (new_crypt == NULL)
374 return -ENOMEM;
375 new_crypt->ops = lib80211_get_crypto_ops("WEP");
376 if (!new_crypt->ops) {
377 request_module("lib80211_crypt_wep");
378 new_crypt->ops = lib80211_get_crypto_ops("WEP");
379 }
380
381 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
382 new_crypt->priv = new_crypt->ops->init(key);
383
384 if (!new_crypt->ops || !new_crypt->priv) {
385 kfree(new_crypt);
386 new_crypt = NULL;
387
388 printk(KERN_WARNING "%s: could not initialize WEP: "
389 "load module lib80211_crypt_wep\n", dev->name);
390 return -EOPNOTSUPP;
391 }
392 *crypt = new_crypt;
393 }
394
395
396 if (erq->length > 0) {
397 len = erq->length <= 5 ? 5 : 13;
398 memcpy(sec.keys[key], keybuf, erq->length);
399 if (len > erq->length)
400 memset(sec.keys[key] + erq->length, 0,
401 len - erq->length);
402 LIBIPW_DEBUG_WX("Setting key %d to '%*pE' (%d:%d bytes)\n",
403 key, len, sec.keys[key],
404 erq->length, len);
405 sec.key_sizes[key] = len;
406 if (*crypt)
407 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
408 (*crypt)->priv);
409 sec.flags |= (1 << key);
410
411
412 if (key == sec.active_key)
413 sec.flags |= SEC_ACTIVE_KEY;
414
415 } else {
416 if (host_crypto) {
417 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
418 NULL, (*crypt)->priv);
419 if (len == 0) {
420
421 LIBIPW_DEBUG_WX("Setting key %d to all "
422 "zero.\n", key);
423 memset(sec.keys[key], 0, 13);
424 (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
425 (*crypt)->priv);
426 sec.key_sizes[key] = 13;
427 sec.flags |= (1 << key);
428 }
429 }
430
431 if (key_provided) {
432 LIBIPW_DEBUG_WX("Setting key %d to default Tx "
433 "key.\n", key);
434 ieee->crypt_info.tx_keyidx = key;
435 sec.active_key = key;
436 sec.flags |= SEC_ACTIVE_KEY;
437 }
438 }
439 if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
440 ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
441 sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
442 WLAN_AUTH_SHARED_KEY;
443 sec.flags |= SEC_AUTH_MODE;
444 LIBIPW_DEBUG_WX("Auth: %s\n",
445 sec.auth_mode == WLAN_AUTH_OPEN ?
446 "OPEN" : "SHARED KEY");
447 }
448
449
450
451 sec.flags |= SEC_LEVEL;
452 sec.level = SEC_LEVEL_1;
453 sec.encode_alg[key] = SEC_ALG_WEP;
454
455 done:
456 if (ieee->set_security)
457 ieee->set_security(dev, &sec);
458
459 return 0;
460 }
461
462 int libipw_wx_get_encode(struct libipw_device *ieee,
463 struct iw_request_info *info,
464 union iwreq_data *wrqu, char *keybuf)
465 {
466 struct iw_point *erq = &(wrqu->encoding);
467 int len, key;
468 struct libipw_security *sec = &ieee->sec;
469
470 LIBIPW_DEBUG_WX("GET_ENCODE\n");
471
472 key = erq->flags & IW_ENCODE_INDEX;
473 if (key) {
474 if (key > WEP_KEYS)
475 return -EINVAL;
476 key--;
477 } else
478 key = ieee->crypt_info.tx_keyidx;
479
480 erq->flags = key + 1;
481
482 if (!sec->enabled) {
483 erq->length = 0;
484 erq->flags |= IW_ENCODE_DISABLED;
485 return 0;
486 }
487
488 len = sec->key_sizes[key];
489 memcpy(keybuf, sec->keys[key], len);
490
491 erq->length = len;
492 erq->flags |= IW_ENCODE_ENABLED;
493
494 if (ieee->open_wep)
495 erq->flags |= IW_ENCODE_OPEN;
496 else
497 erq->flags |= IW_ENCODE_RESTRICTED;
498
499 return 0;
500 }
501
502 int libipw_wx_set_encodeext(struct libipw_device *ieee,
503 struct iw_request_info *info,
504 union iwreq_data *wrqu, char *extra)
505 {
506 struct net_device *dev = ieee->dev;
507 struct iw_point *encoding = &wrqu->encoding;
508 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
509 int i, idx, ret = 0;
510 int group_key = 0;
511 const char *alg, *module;
512 struct lib80211_crypto_ops *ops;
513 struct lib80211_crypt_data **crypt;
514
515 struct libipw_security sec = {
516 .flags = 0,
517 };
518
519 idx = encoding->flags & IW_ENCODE_INDEX;
520 if (idx) {
521 if (idx < 1 || idx > WEP_KEYS)
522 return -EINVAL;
523 idx--;
524 } else
525 idx = ieee->crypt_info.tx_keyidx;
526
527 if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
528 crypt = &ieee->crypt_info.crypt[idx];
529 group_key = 1;
530 } else {
531
532 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
533 return -EINVAL;
534 if (ieee->iw_mode == IW_MODE_INFRA)
535 crypt = &ieee->crypt_info.crypt[idx];
536 else
537 return -EINVAL;
538 }
539
540 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
541 if ((encoding->flags & IW_ENCODE_DISABLED) ||
542 ext->alg == IW_ENCODE_ALG_NONE) {
543 if (*crypt)
544 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
545
546 for (i = 0; i < WEP_KEYS; i++)
547 if (ieee->crypt_info.crypt[i] != NULL)
548 break;
549
550 if (i == WEP_KEYS) {
551 sec.enabled = 0;
552 sec.encrypt = 0;
553 sec.level = SEC_LEVEL_0;
554 sec.flags |= SEC_LEVEL;
555 }
556 goto done;
557 }
558
559 sec.enabled = 1;
560 sec.encrypt = 1;
561
562 if (group_key ? !ieee->host_mc_decrypt :
563 !(ieee->host_encrypt || ieee->host_decrypt ||
564 ieee->host_encrypt_msdu))
565 goto skip_host_crypt;
566
567 switch (ext->alg) {
568 case IW_ENCODE_ALG_WEP:
569 alg = "WEP";
570 module = "lib80211_crypt_wep";
571 break;
572 case IW_ENCODE_ALG_TKIP:
573 alg = "TKIP";
574 module = "lib80211_crypt_tkip";
575 break;
576 case IW_ENCODE_ALG_CCMP:
577 alg = "CCMP";
578 module = "lib80211_crypt_ccmp";
579 break;
580 default:
581 LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
582 dev->name, ext->alg);
583 ret = -EINVAL;
584 goto done;
585 }
586
587 ops = lib80211_get_crypto_ops(alg);
588 if (ops == NULL) {
589 request_module(module);
590 ops = lib80211_get_crypto_ops(alg);
591 }
592 if (ops == NULL) {
593 LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
594 dev->name, ext->alg);
595 ret = -EINVAL;
596 goto done;
597 }
598
599 if (*crypt == NULL || (*crypt)->ops != ops) {
600 struct lib80211_crypt_data *new_crypt;
601
602 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
603
604 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
605 if (new_crypt == NULL) {
606 ret = -ENOMEM;
607 goto done;
608 }
609 new_crypt->ops = ops;
610 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
611 new_crypt->priv = new_crypt->ops->init(idx);
612 if (new_crypt->priv == NULL) {
613 kfree(new_crypt);
614 ret = -EINVAL;
615 goto done;
616 }
617 *crypt = new_crypt;
618 }
619
620 if (ext->key_len > 0 && (*crypt)->ops->set_key &&
621 (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
622 (*crypt)->priv) < 0) {
623 LIBIPW_DEBUG_WX("%s: key setting failed\n", dev->name);
624 ret = -EINVAL;
625 goto done;
626 }
627
628 skip_host_crypt:
629 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
630 ieee->crypt_info.tx_keyidx = idx;
631 sec.active_key = idx;
632 sec.flags |= SEC_ACTIVE_KEY;
633 }
634
635 if (ext->alg != IW_ENCODE_ALG_NONE) {
636 memcpy(sec.keys[idx], ext->key, ext->key_len);
637 sec.key_sizes[idx] = ext->key_len;
638 sec.flags |= (1 << idx);
639 if (ext->alg == IW_ENCODE_ALG_WEP) {
640 sec.encode_alg[idx] = SEC_ALG_WEP;
641 sec.flags |= SEC_LEVEL;
642 sec.level = SEC_LEVEL_1;
643 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
644 sec.encode_alg[idx] = SEC_ALG_TKIP;
645 sec.flags |= SEC_LEVEL;
646 sec.level = SEC_LEVEL_2;
647 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
648 sec.encode_alg[idx] = SEC_ALG_CCMP;
649 sec.flags |= SEC_LEVEL;
650 sec.level = SEC_LEVEL_3;
651 }
652
653 if (group_key)
654 sec.flags &= ~SEC_LEVEL;
655 }
656 done:
657 if (ieee->set_security)
658 ieee->set_security(dev, &sec);
659
660 return ret;
661 }
662
663 int libipw_wx_get_encodeext(struct libipw_device *ieee,
664 struct iw_request_info *info,
665 union iwreq_data *wrqu, char *extra)
666 {
667 struct iw_point *encoding = &wrqu->encoding;
668 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
669 struct libipw_security *sec = &ieee->sec;
670 int idx, max_key_len;
671
672 max_key_len = encoding->length - sizeof(*ext);
673 if (max_key_len < 0)
674 return -EINVAL;
675
676 idx = encoding->flags & IW_ENCODE_INDEX;
677 if (idx) {
678 if (idx < 1 || idx > WEP_KEYS)
679 return -EINVAL;
680 idx--;
681 } else
682 idx = ieee->crypt_info.tx_keyidx;
683
684 if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
685 ext->alg != IW_ENCODE_ALG_WEP)
686 if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
687 return -EINVAL;
688
689 encoding->flags = idx + 1;
690 memset(ext, 0, sizeof(*ext));
691
692 if (!sec->enabled) {
693 ext->alg = IW_ENCODE_ALG_NONE;
694 ext->key_len = 0;
695 encoding->flags |= IW_ENCODE_DISABLED;
696 } else {
697 if (sec->encode_alg[idx] == SEC_ALG_WEP)
698 ext->alg = IW_ENCODE_ALG_WEP;
699 else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
700 ext->alg = IW_ENCODE_ALG_TKIP;
701 else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
702 ext->alg = IW_ENCODE_ALG_CCMP;
703 else
704 return -EINVAL;
705
706 ext->key_len = sec->key_sizes[idx];
707 memcpy(ext->key, sec->keys[idx], ext->key_len);
708 encoding->flags |= IW_ENCODE_ENABLED;
709 if (ext->key_len &&
710 (ext->alg == IW_ENCODE_ALG_TKIP ||
711 ext->alg == IW_ENCODE_ALG_CCMP))
712 ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
713
714 }
715
716 return 0;
717 }
718
719 EXPORT_SYMBOL(libipw_wx_set_encodeext);
720 EXPORT_SYMBOL(libipw_wx_get_encodeext);
721
722 EXPORT_SYMBOL(libipw_wx_get_scan);
723 EXPORT_SYMBOL(libipw_wx_set_encode);
724 EXPORT_SYMBOL(libipw_wx_get_encode);