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Linux v2.6.16-rc1
[linux-2.6/next.git] / net / ieee80211 / ieee80211_wx.c
blob23e1630f50b7cf872e01286c01a108cbc66c478f
1 /******************************************************************************
2
3 Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
4
5 Portions of this file are based on the WEP enablement code provided by the
6 Host AP project hostap-drivers v0.1.3
7 Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
8 <jkmaline@cc.hut.fi>
9 Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
10
11 This program is free software; you can redistribute it and/or modify it
12 under the terms of version 2 of the GNU General Public License as
13 published by the Free Software Foundation.
14
15 This program is distributed in the hope that it will be useful, but WITHOUT
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 more details.
19
20 You should have received a copy of the GNU General Public License along with
21 this program; if not, write to the Free Software Foundation, Inc., 59
22 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23
24 The full GNU General Public License is included in this distribution in the
25 file called LICENSE.
26
27 Contact Information:
28 James P. Ketrenos <ipw2100-admin@linux.intel.com>
29 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30
31 ******************************************************************************/
32
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
40 static const char *ieee80211_modes[] = {
41 "?", "a", "b", "ab", "g", "ag", "bg", "abg"
42 };
43
44 #define MAX_CUSTOM_LEN 64
45 static char *ipw2100_translate_scan(struct ieee80211_device *ieee,
46 char *start, char *stop,
47 struct ieee80211_network *network)
48 {
49 char custom[MAX_CUSTOM_LEN];
50 char *p;
51 struct iw_event iwe;
52 int i, j;
53 u8 max_rate, rate;
54
55 /* First entry *MUST* be the AP MAC address */
56 iwe.cmd = SIOCGIWAP;
57 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
58 memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
59 start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);
60
61 /* Remaining entries will be displayed in the order we provide them */
62
63 /* Add the ESSID */
64 iwe.cmd = SIOCGIWESSID;
65 iwe.u.data.flags = 1;
66 if (network->flags & NETWORK_EMPTY_ESSID) {
67 iwe.u.data.length = sizeof("<hidden>");
68 start = iwe_stream_add_point(start, stop, &iwe, "<hidden>");
69 } else {
70 iwe.u.data.length = min(network->ssid_len, (u8) 32);
71 start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
72 }
73
74 /* Add the protocol name */
75 iwe.cmd = SIOCGIWNAME;
76 snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
77 ieee80211_modes[network->mode]);
78 start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN);
79
80 /* Add mode */
81 iwe.cmd = SIOCGIWMODE;
82 if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
83 if (network->capability & WLAN_CAPABILITY_ESS)
84 iwe.u.mode = IW_MODE_MASTER;
85 else
86 iwe.u.mode = IW_MODE_ADHOC;
87
88 start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN);
89 }
90
91 /* Add frequency/channel */
92 iwe.cmd = SIOCGIWFREQ;
93 /* iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode);
94 iwe.u.freq.e = 3; */
95 iwe.u.freq.m = network->channel;
96 iwe.u.freq.e = 0;
97 iwe.u.freq.i = 0;
98 start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);
99
100 /* Add encryption capability */
101 iwe.cmd = SIOCGIWENCODE;
102 if (network->capability & WLAN_CAPABILITY_PRIVACY)
103 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
104 else
105 iwe.u.data.flags = IW_ENCODE_DISABLED;
106 iwe.u.data.length = 0;
107 start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
108
109 /* Add basic and extended rates */
110 max_rate = 0;
111 p = custom;
112 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
113 for (i = 0, j = 0; i < network->rates_len;) {
114 if (j < network->rates_ex_len &&
115 ((network->rates_ex[j] & 0x7F) <
116 (network->rates[i] & 0x7F)))
117 rate = network->rates_ex[j++] & 0x7F;
118 else
119 rate = network->rates[i++] & 0x7F;
120 if (rate > max_rate)
121 max_rate = rate;
122 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
123 "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
124 }
125 for (; j < network->rates_ex_len; j++) {
126 rate = network->rates_ex[j] & 0x7F;
127 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
128 "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
129 if (rate > max_rate)
130 max_rate = rate;
131 }
132
133 iwe.cmd = SIOCGIWRATE;
134 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
135 iwe.u.bitrate.value = max_rate * 500000;
136 start = iwe_stream_add_event(start, stop, &iwe, IW_EV_PARAM_LEN);
137
138 iwe.cmd = IWEVCUSTOM;
139 iwe.u.data.length = p - custom;
140 if (iwe.u.data.length)
141 start = iwe_stream_add_point(start, stop, &iwe, custom);
142
143 /* Add quality statistics */
144 iwe.cmd = IWEVQUAL;
145 iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
146 IW_QUAL_NOISE_UPDATED;
147
148 if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
149 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
150 IW_QUAL_LEVEL_INVALID;
151 iwe.u.qual.qual = 0;
152 iwe.u.qual.level = 0;
153 } else {
154 iwe.u.qual.level = network->stats.rssi;
155 if (ieee->perfect_rssi == ieee->worst_rssi)
156 iwe.u.qual.qual = 100;
157 else
158 iwe.u.qual.qual =
159 (100 *
160 (ieee->perfect_rssi - ieee->worst_rssi) *
161 (ieee->perfect_rssi - ieee->worst_rssi) -
162 (ieee->perfect_rssi - network->stats.rssi) *
163 (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
164 62 * (ieee->perfect_rssi -
165 network->stats.rssi))) /
166 ((ieee->perfect_rssi -
167 ieee->worst_rssi) * (ieee->perfect_rssi -
168 ieee->worst_rssi));
169 if (iwe.u.qual.qual > 100)
170 iwe.u.qual.qual = 100;
171 else if (iwe.u.qual.qual < 1)
172 iwe.u.qual.qual = 0;
173 }
174
175 if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
176 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
177 iwe.u.qual.noise = 0;
178 } else {
179 iwe.u.qual.noise = network->stats.noise;
180 }
181
182 start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);
183
184 iwe.cmd = IWEVCUSTOM;
185 p = custom;
186
187 iwe.u.data.length = p - custom;
188 if (iwe.u.data.length)
189 start = iwe_stream_add_point(start, stop, &iwe, custom);
190
191 if (network->wpa_ie_len) {
192 char buf[MAX_WPA_IE_LEN * 2 + 30];
193
194 u8 *p = buf;
195 p += sprintf(p, "wpa_ie=");
196 for (i = 0; i < network->wpa_ie_len; i++) {
197 p += sprintf(p, "%02x", network->wpa_ie[i]);
198 }
199
200 memset(&iwe, 0, sizeof(iwe));
201 iwe.cmd = IWEVCUSTOM;
202 iwe.u.data.length = strlen(buf);
203 start = iwe_stream_add_point(start, stop, &iwe, buf);
204 }
205
206 if (network->rsn_ie_len) {
207 char buf[MAX_WPA_IE_LEN * 2 + 30];
208
209 u8 *p = buf;
210 p += sprintf(p, "rsn_ie=");
211 for (i = 0; i < network->rsn_ie_len; i++) {
212 p += sprintf(p, "%02x", network->rsn_ie[i]);
213 }
214
215 memset(&iwe, 0, sizeof(iwe));
216 iwe.cmd = IWEVCUSTOM;
217 iwe.u.data.length = strlen(buf);
218 start = iwe_stream_add_point(start, stop, &iwe, buf);
219 }
220
221 /* Add EXTRA: Age to display seconds since last beacon/probe response
222 * for given network. */
223 iwe.cmd = IWEVCUSTOM;
224 p = custom;
225 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
226 " Last beacon: %dms ago",
227 jiffies_to_msecs(jiffies - network->last_scanned));
228 iwe.u.data.length = p - custom;
229 if (iwe.u.data.length)
230 start = iwe_stream_add_point(start, stop, &iwe, custom);
231
232 return start;
233 }
234
235 int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
236 struct iw_request_info *info,
237 union iwreq_data *wrqu, char *extra)
238 {
239 struct ieee80211_network *network;
240 unsigned long flags;
241
242 char *ev = extra;
243 char *stop = ev + IW_SCAN_MAX_DATA;
244 int i = 0;
245
246 IEEE80211_DEBUG_WX("Getting scan\n");
247
248 spin_lock_irqsave(&ieee->lock, flags);
249
250 list_for_each_entry(network, &ieee->network_list, list) {
251 i++;
252 if (ieee->scan_age == 0 ||
253 time_after(network->last_scanned + ieee->scan_age, jiffies))
254 ev = ipw2100_translate_scan(ieee, ev, stop, network);
255 else
256 IEEE80211_DEBUG_SCAN("Not showing network '%s ("
257 MAC_FMT ")' due to age (%dms).\n",
258 escape_essid(network->ssid,
259 network->ssid_len),
260 MAC_ARG(network->bssid),
261 jiffies_to_msecs(jiffies -
262 network->
263 last_scanned));
264 }
265
266 spin_unlock_irqrestore(&ieee->lock, flags);
267
268 wrqu->data.length = ev - extra;
269 wrqu->data.flags = 0;
270
271 IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);
272
273 return 0;
274 }
275
276 int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
277 struct iw_request_info *info,
278 union iwreq_data *wrqu, char *keybuf)
279 {
280 struct iw_point *erq = &(wrqu->encoding);
281 struct net_device *dev = ieee->dev;
282 struct ieee80211_security sec = {
283 .flags = 0
284 };
285 int i, key, key_provided, len;
286 struct ieee80211_crypt_data **crypt;
287 int host_crypto = ieee->host_encrypt || ieee->host_decrypt || ieee->host_build_iv;
288
289 IEEE80211_DEBUG_WX("SET_ENCODE\n");
290
291 key = erq->flags & IW_ENCODE_INDEX;
292 if (key) {
293 if (key > WEP_KEYS)
294 return -EINVAL;
295 key--;
296 key_provided = 1;
297 } else {
298 key_provided = 0;
299 key = ieee->tx_keyidx;
300 }
301
302 IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
303 "provided" : "default");
304
305 crypt = &ieee->crypt[key];
306
307 if (erq->flags & IW_ENCODE_DISABLED) {
308 if (key_provided && *crypt) {
309 IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
310 key);
311 ieee80211_crypt_delayed_deinit(ieee, crypt);
312 } else
313 IEEE80211_DEBUG_WX("Disabling encryption.\n");
314
315 /* Check all the keys to see if any are still configured,
316 * and if no key index was provided, de-init them all */
317 for (i = 0; i < WEP_KEYS; i++) {
318 if (ieee->crypt[i] != NULL) {
319 if (key_provided)
320 break;
321 ieee80211_crypt_delayed_deinit(ieee,
322 &ieee->crypt[i]);
323 }
324 }
325
326 if (i == WEP_KEYS) {
327 sec.enabled = 0;
328 sec.encrypt = 0;
329 sec.level = SEC_LEVEL_0;
330 sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
331 }
332
333 goto done;
334 }
335
336 sec.enabled = 1;
337 sec.encrypt = 1;
338 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
339
340 if (*crypt != NULL && (*crypt)->ops != NULL &&
341 strcmp((*crypt)->ops->name, "WEP") != 0) {
342 /* changing to use WEP; deinit previously used algorithm
343 * on this key */
344 ieee80211_crypt_delayed_deinit(ieee, crypt);
345 }
346
347 if (*crypt == NULL && host_crypto) {
348 struct ieee80211_crypt_data *new_crypt;
349
350 /* take WEP into use */
351 new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data),
352 GFP_KERNEL);
353 if (new_crypt == NULL)
354 return -ENOMEM;
355 memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
356 new_crypt->ops = ieee80211_get_crypto_ops("WEP");
357 if (!new_crypt->ops) {
358 request_module("ieee80211_crypt_wep");
359 new_crypt->ops = ieee80211_get_crypto_ops("WEP");
360 }
361
362 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
363 new_crypt->priv = new_crypt->ops->init(key);
364
365 if (!new_crypt->ops || !new_crypt->priv) {
366 kfree(new_crypt);
367 new_crypt = NULL;
368
369 printk(KERN_WARNING "%s: could not initialize WEP: "
370 "load module ieee80211_crypt_wep\n", dev->name);
371 return -EOPNOTSUPP;
372 }
373 *crypt = new_crypt;
374 }
375
376 /* If a new key was provided, set it up */
377 if (erq->length > 0) {
378 len = erq->length <= 5 ? 5 : 13;
379 memcpy(sec.keys[key], keybuf, erq->length);
380 if (len > erq->length)
381 memset(sec.keys[key] + erq->length, 0,
382 len - erq->length);
383 IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
384 key, escape_essid(sec.keys[key], len),
385 erq->length, len);
386 sec.key_sizes[key] = len;
387 if (*crypt)
388 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
389 (*crypt)->priv);
390 sec.flags |= (1 << key);
391 /* This ensures a key will be activated if no key is
392 * explicitely set */
393 if (key == sec.active_key)
394 sec.flags |= SEC_ACTIVE_KEY;
395
396 } else {
397 if (host_crypto) {
398 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
399 NULL, (*crypt)->priv);
400 if (len == 0) {
401 /* Set a default key of all 0 */
402 IEEE80211_DEBUG_WX("Setting key %d to all "
403 "zero.\n", key);
404 memset(sec.keys[key], 0, 13);
405 (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
406 (*crypt)->priv);
407 sec.key_sizes[key] = 13;
408 sec.flags |= (1 << key);
409 }
410 }
411 /* No key data - just set the default TX key index */
412 if (key_provided) {
413 IEEE80211_DEBUG_WX("Setting key %d to default Tx "
414 "key.\n", key);
415 ieee->tx_keyidx = key;
416 sec.active_key = key;
417 sec.flags |= SEC_ACTIVE_KEY;
418 }
419 }
420 if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
421 ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
422 sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
423 WLAN_AUTH_SHARED_KEY;
424 sec.flags |= SEC_AUTH_MODE;
425 IEEE80211_DEBUG_WX("Auth: %s\n",
426 sec.auth_mode == WLAN_AUTH_OPEN ?
427 "OPEN" : "SHARED KEY");
428 }
429
430 /* For now we just support WEP, so only set that security level...
431 * TODO: When WPA is added this is one place that needs to change */
432 sec.flags |= SEC_LEVEL;
433 sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
434 sec.encode_alg[key] = SEC_ALG_WEP;
435
436 done:
437 if (ieee->set_security)
438 ieee->set_security(dev, &sec);
439
440 /* Do not reset port if card is in Managed mode since resetting will
441 * generate new IEEE 802.11 authentication which may end up in looping
442 * with IEEE 802.1X. If your hardware requires a reset after WEP
443 * configuration (for example... Prism2), implement the reset_port in
444 * the callbacks structures used to initialize the 802.11 stack. */
445 if (ieee->reset_on_keychange &&
446 ieee->iw_mode != IW_MODE_INFRA &&
447 ieee->reset_port && ieee->reset_port(dev)) {
448 printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
449 return -EINVAL;
450 }
451 return 0;
452 }
453
454 int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
455 struct iw_request_info *info,
456 union iwreq_data *wrqu, char *keybuf)
457 {
458 struct iw_point *erq = &(wrqu->encoding);
459 int len, key;
460 struct ieee80211_crypt_data *crypt;
461 struct ieee80211_security *sec = &ieee->sec;
462
463 IEEE80211_DEBUG_WX("GET_ENCODE\n");
464
465 key = erq->flags & IW_ENCODE_INDEX;
466 if (key) {
467 if (key > WEP_KEYS)
468 return -EINVAL;
469 key--;
470 } else
471 key = ieee->tx_keyidx;
472
473 crypt = ieee->crypt[key];
474 erq->flags = key + 1;
475
476 if (!sec->enabled) {
477 erq->length = 0;
478 erq->flags |= IW_ENCODE_DISABLED;
479 return 0;
480 }
481
482 len = sec->key_sizes[key];
483 memcpy(keybuf, sec->keys[key], len);
484
485 erq->length = (len >= 0 ? len : 0);
486 erq->flags |= IW_ENCODE_ENABLED;
487
488 if (ieee->open_wep)
489 erq->flags |= IW_ENCODE_OPEN;
490 else
491 erq->flags |= IW_ENCODE_RESTRICTED;
492
493 return 0;
494 }
495
496 int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
497 struct iw_request_info *info,
498 union iwreq_data *wrqu, char *extra)
499 {
500 struct net_device *dev = ieee->dev;
501 struct iw_point *encoding = &wrqu->encoding;
502 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
503 int i, idx, ret = 0;
504 int group_key = 0;
505 const char *alg, *module;
506 struct ieee80211_crypto_ops *ops;
507 struct ieee80211_crypt_data **crypt;
508
509 struct ieee80211_security sec = {
510 .flags = 0,
511 };
512
513 idx = encoding->flags & IW_ENCODE_INDEX;
514 if (idx) {
515 if (idx < 1 || idx > WEP_KEYS)
516 return -EINVAL;
517 idx--;
518 } else
519 idx = ieee->tx_keyidx;
520
521 if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
522 crypt = &ieee->crypt[idx];
523 group_key = 1;
524 } else {
525 /* some Cisco APs use idx>0 for unicast in dynamic WEP */
526 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
527 return -EINVAL;
528 if (ieee->iw_mode == IW_MODE_INFRA)
529 crypt = &ieee->crypt[idx];
530 else
531 return -EINVAL;
532 }
533
534 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
535 if ((encoding->flags & IW_ENCODE_DISABLED) ||
536 ext->alg == IW_ENCODE_ALG_NONE) {
537 if (*crypt)
538 ieee80211_crypt_delayed_deinit(ieee, crypt);
539
540 for (i = 0; i < WEP_KEYS; i++)
541 if (ieee->crypt[i] != NULL)
542 break;
543
544 if (i == WEP_KEYS) {
545 sec.enabled = 0;
546 sec.encrypt = 0;
547 sec.level = SEC_LEVEL_0;
548 sec.flags |= SEC_LEVEL;
549 }
550 goto done;
551 }
552
553 sec.enabled = 1;
554 sec.encrypt = 1;
555
556 if (group_key ? !ieee->host_mc_decrypt :
557 !(ieee->host_encrypt || ieee->host_decrypt ||
558 ieee->host_encrypt_msdu))
559 goto skip_host_crypt;
560
561 switch (ext->alg) {
562 case IW_ENCODE_ALG_WEP:
563 alg = "WEP";
564 module = "ieee80211_crypt_wep";
565 break;
566 case IW_ENCODE_ALG_TKIP:
567 alg = "TKIP";
568 module = "ieee80211_crypt_tkip";
569 break;
570 case IW_ENCODE_ALG_CCMP:
571 alg = "CCMP";
572 module = "ieee80211_crypt_ccmp";
573 break;
574 default:
575 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
576 dev->name, ext->alg);
577 ret = -EINVAL;
578 goto done;
579 }
580
581 ops = ieee80211_get_crypto_ops(alg);
582 if (ops == NULL) {
583 request_module(module);
584 ops = ieee80211_get_crypto_ops(alg);
585 }
586 if (ops == NULL) {
587 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
588 dev->name, ext->alg);
589 ret = -EINVAL;
590 goto done;
591 }
592
593 if (*crypt == NULL || (*crypt)->ops != ops) {
594 struct ieee80211_crypt_data *new_crypt;
595
596 ieee80211_crypt_delayed_deinit(ieee, crypt);
597
598 new_crypt = (struct ieee80211_crypt_data *)
599 kmalloc(sizeof(*new_crypt), GFP_KERNEL);
600 if (new_crypt == NULL) {
601 ret = -ENOMEM;
602 goto done;
603 }
604 memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
605 new_crypt->ops = ops;
606 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
607 new_crypt->priv = new_crypt->ops->init(idx);
608 if (new_crypt->priv == NULL) {
609 kfree(new_crypt);
610 ret = -EINVAL;
611 goto done;
612 }
613 *crypt = new_crypt;
614 }
615
616 if (ext->key_len > 0 && (*crypt)->ops->set_key &&
617 (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
618 (*crypt)->priv) < 0) {
619 IEEE80211_DEBUG_WX("%s: key setting failed\n", dev->name);
620 ret = -EINVAL;
621 goto done;
622 }
623
624 skip_host_crypt:
625 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
626 ieee->tx_keyidx = idx;
627 sec.active_key = idx;
628 sec.flags |= SEC_ACTIVE_KEY;
629 }
630
631 if (ext->alg != IW_ENCODE_ALG_NONE) {
632 memcpy(sec.keys[idx], ext->key, ext->key_len);
633 sec.key_sizes[idx] = ext->key_len;
634 sec.flags |= (1 << idx);
635 if (ext->alg == IW_ENCODE_ALG_WEP) {
636 sec.encode_alg[idx] = SEC_ALG_WEP;
637 sec.flags |= SEC_LEVEL;
638 sec.level = SEC_LEVEL_1;
639 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
640 sec.encode_alg[idx] = SEC_ALG_TKIP;
641 sec.flags |= SEC_LEVEL;
642 sec.level = SEC_LEVEL_2;
643 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
644 sec.encode_alg[idx] = SEC_ALG_CCMP;
645 sec.flags |= SEC_LEVEL;
646 sec.level = SEC_LEVEL_3;
647 }
648 /* Don't set sec level for group keys. */
649 if (group_key)
650 sec.flags &= ~SEC_LEVEL;
651 }
652 done:
653 if (ieee->set_security)
654 ieee->set_security(ieee->dev, &sec);
655
656 /*
657 * Do not reset port if card is in Managed mode since resetting will
658 * generate new IEEE 802.11 authentication which may end up in looping
659 * with IEEE 802.1X. If your hardware requires a reset after WEP
660 * configuration (for example... Prism2), implement the reset_port in
661 * the callbacks structures used to initialize the 802.11 stack.
662 */
663 if (ieee->reset_on_keychange &&
664 ieee->iw_mode != IW_MODE_INFRA &&
665 ieee->reset_port && ieee->reset_port(dev)) {
666 IEEE80211_DEBUG_WX("%s: reset_port failed\n", dev->name);
667 return -EINVAL;
668 }
669
670 return ret;
671 }
672
673 int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
674 struct iw_request_info *info,
675 union iwreq_data *wrqu, char *extra)
676 {
677 struct iw_point *encoding = &wrqu->encoding;
678 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
679 struct ieee80211_security *sec = &ieee->sec;
680 int idx, max_key_len;
681
682 max_key_len = encoding->length - sizeof(*ext);
683 if (max_key_len < 0)
684 return -EINVAL;
685
686 idx = encoding->flags & IW_ENCODE_INDEX;
687 if (idx) {
688 if (idx < 1 || idx > WEP_KEYS)
689 return -EINVAL;
690 idx--;
691 } else
692 idx = ieee->tx_keyidx;
693
694 if (!ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY &&
695 ext->alg != IW_ENCODE_ALG_WEP)
696 if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
697 return -EINVAL;
698
699 encoding->flags = idx + 1;
700 memset(ext, 0, sizeof(*ext));
701
702 if (!sec->enabled) {
703 ext->alg = IW_ENCODE_ALG_NONE;
704 ext->key_len = 0;
705 encoding->flags |= IW_ENCODE_DISABLED;
706 } else {
707 if (sec->encode_alg[idx] == SEC_ALG_WEP)
708 ext->alg = IW_ENCODE_ALG_WEP;
709 else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
710 ext->alg = IW_ENCODE_ALG_TKIP;
711 else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
712 ext->alg = IW_ENCODE_ALG_CCMP;
713 else
714 return -EINVAL;
715
716 ext->key_len = sec->key_sizes[idx];
717 memcpy(ext->key, sec->keys[idx], ext->key_len);
718 encoding->flags |= IW_ENCODE_ENABLED;
719 if (ext->key_len &&
720 (ext->alg == IW_ENCODE_ALG_TKIP ||
721 ext->alg == IW_ENCODE_ALG_CCMP))
722 ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
723
724 }
725
726 return 0;
727 }
728
729 EXPORT_SYMBOL(ieee80211_wx_set_encodeext);
730 EXPORT_SYMBOL(ieee80211_wx_get_encodeext);
731
732 EXPORT_SYMBOL(ieee80211_wx_get_scan);
733 EXPORT_SYMBOL(ieee80211_wx_set_encode);
734 EXPORT_SYMBOL(ieee80211_wx_get_encode);
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