1 // SPDX-License-Identifier: GPL-2.0-only
2 /******************************************************************************
3
4 Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
5
6 Portions of this file are based on the WEP enablement code provided by the
7 Host AP project hostap-drivers v0.1.3
8 Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 <j@w1.fi>
10 Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
11
12
13 Contact Information:
14 Intel Linux Wireless <ilw@linux.intel.com>
15 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
16
17 ******************************************************************************/
18
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 #include <linux/wireless.h>
25 #include "libipw.h"
26
27 static const char *libipw_modes[] = {
28 "?", "a", "b", "ab", "g", "ag", "bg", "abg"
29 };
30
elapsed_jiffies_msecs(unsigned long start)31 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
32 {
33 unsigned long end = jiffies;
34
35 if (end >= start)
36 return jiffies_to_msecs(end - start);
37
38 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
39 }
40
41 #define MAX_CUSTOM_LEN 64
libipw_translate_scan(struct libipw_device * ieee,char * start,char * stop,struct libipw_network * network,struct iw_request_info * info)42 static char *libipw_translate_scan(struct libipw_device *ieee,
43 char *start, char *stop,
44 struct libipw_network *network,
45 struct iw_request_info *info)
46 {
47 char custom[MAX_CUSTOM_LEN];
48 char *p;
49 struct iw_event iwe;
50 int i, j;
51 char *current_val; /* For rates */
52 u8 rate;
53
54 /* First entry *MUST* be the AP MAC address */
55 iwe.cmd = SIOCGIWAP;
56 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
57 memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
58 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
59
60 /* Remaining entries will be displayed in the order we provide them */
61
62 /* Add the ESSID */
63 iwe.cmd = SIOCGIWESSID;
64 iwe.u.data.flags = 1;
65 iwe.u.data.length = min(network->ssid_len, (u8) 32);
66 start = iwe_stream_add_point(info, start, stop,
67 &iwe, network->ssid);
68
69 /* Add the protocol name */
70 iwe.cmd = SIOCGIWNAME;
71 snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
72 libipw_modes[network->mode]);
73 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
74
75 /* Add mode */
76 iwe.cmd = SIOCGIWMODE;
77 if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
78 if (network->capability & WLAN_CAPABILITY_ESS)
79 iwe.u.mode = IW_MODE_MASTER;
80 else
81 iwe.u.mode = IW_MODE_ADHOC;
82
83 start = iwe_stream_add_event(info, start, stop,
84 &iwe, IW_EV_UINT_LEN);
85 }
86
87 /* Add channel and frequency */
88 /* Note : userspace automatically computes channel using iwrange */
89 iwe.cmd = SIOCGIWFREQ;
90 iwe.u.freq.m = libipw_channel_to_freq(ieee, network->channel);
91 iwe.u.freq.e = 6;
92 iwe.u.freq.i = 0;
93 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
94
95 /* Add encryption capability */
96 iwe.cmd = SIOCGIWENCODE;
97 if (network->capability & WLAN_CAPABILITY_PRIVACY)
98 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
99 else
100 iwe.u.data.flags = IW_ENCODE_DISABLED;
101 iwe.u.data.length = 0;
102 start = iwe_stream_add_point(info, start, stop,
103 &iwe, network->ssid);
104
105 /* Add basic and extended rates */
106 /* Rate : stuffing multiple values in a single event require a bit
107 * more of magic - Jean II */
108 current_val = start + iwe_stream_lcp_len(info);
109 iwe.cmd = SIOCGIWRATE;
110 /* Those two flags are ignored... */
111 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
112
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 /* Bit rate given in 500 kb/s units (+ 0x80) */
121 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
122 /* Add new value to event */
123 current_val = iwe_stream_add_value(info, start, current_val,
124 stop, &iwe, IW_EV_PARAM_LEN);
125 }
126 for (; j < network->rates_ex_len; j++) {
127 rate = network->rates_ex[j] & 0x7F;
128 /* Bit rate given in 500 kb/s units (+ 0x80) */
129 iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
130 /* Add new value to event */
131 current_val = iwe_stream_add_value(info, start, current_val,
132 stop, &iwe, IW_EV_PARAM_LEN);
133 }
134 /* Check if we added any rate */
135 if ((current_val - start) > iwe_stream_lcp_len(info))
136 start = current_val;
137
138 /* Add quality statistics */
139 iwe.cmd = IWEVQUAL;
140 iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
141 IW_QUAL_NOISE_UPDATED;
142
143 if (!(network->stats.mask & LIBIPW_STATMASK_RSSI)) {
144 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
145 IW_QUAL_LEVEL_INVALID;
146 iwe.u.qual.qual = 0;
147 } else {
148 if (ieee->perfect_rssi == ieee->worst_rssi)
149 iwe.u.qual.qual = 100;
150 else
151 iwe.u.qual.qual =
152 (100 *
153 (ieee->perfect_rssi - ieee->worst_rssi) *
154 (ieee->perfect_rssi - ieee->worst_rssi) -
155 (ieee->perfect_rssi - network->stats.rssi) *
156 (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
157 62 * (ieee->perfect_rssi -
158 network->stats.rssi))) /
159 ((ieee->perfect_rssi -
160 ieee->worst_rssi) * (ieee->perfect_rssi -
161 ieee->worst_rssi));
162 if (iwe.u.qual.qual > 100)
163 iwe.u.qual.qual = 100;
164 else if (iwe.u.qual.qual < 1)
165 iwe.u.qual.qual = 0;
166 }
167
168 if (!(network->stats.mask & LIBIPW_STATMASK_NOISE)) {
169 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
170 iwe.u.qual.noise = 0;
171 } else {
172 iwe.u.qual.noise = network->stats.noise;
173 }
174
175 if (!(network->stats.mask & LIBIPW_STATMASK_SIGNAL)) {
176 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
177 iwe.u.qual.level = 0;
178 } else {
179 iwe.u.qual.level = network->stats.signal;
180 }
181
182 start = iwe_stream_add_event(info, 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(info, start, stop, &iwe, custom);
190
191 memset(&iwe, 0, sizeof(iwe));
192 if (network->wpa_ie_len) {
193 char buf[MAX_WPA_IE_LEN];
194 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
195 iwe.cmd = IWEVGENIE;
196 iwe.u.data.length = network->wpa_ie_len;
197 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
198 }
199
200 memset(&iwe, 0, sizeof(iwe));
201 if (network->rsn_ie_len) {
202 char buf[MAX_WPA_IE_LEN];
203 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
204 iwe.cmd = IWEVGENIE;
205 iwe.u.data.length = network->rsn_ie_len;
206 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
207 }
208
209 /* Add EXTRA: Age to display seconds since last beacon/probe response
210 * for given network. */
211 iwe.cmd = IWEVCUSTOM;
212 p = custom;
213 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
214 " Last beacon: %ums ago",
215 elapsed_jiffies_msecs(network->last_scanned));
216 iwe.u.data.length = p - custom;
217 if (iwe.u.data.length)
218 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
219
220 /* Add spectrum management information */
221 iwe.cmd = -1;
222 p = custom;
223 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
224
225 if (libipw_get_channel_flags(ieee, network->channel) &
226 LIBIPW_CH_INVALID) {
227 iwe.cmd = IWEVCUSTOM;
228 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
229 }
230
231 if (libipw_get_channel_flags(ieee, network->channel) &
232 LIBIPW_CH_RADAR_DETECT) {
233 iwe.cmd = IWEVCUSTOM;
234 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
235 }
236
237 if (iwe.cmd == IWEVCUSTOM) {
238 iwe.u.data.length = p - custom;
239 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
240 }
241
242 return start;
243 }
244
245 #define SCAN_ITEM_SIZE 128
246
libipw_wx_get_scan(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)247 int libipw_wx_get_scan(struct libipw_device *ieee,
248 struct iw_request_info *info,
249 union iwreq_data *wrqu, char *extra)
250 {
251 struct libipw_network *network;
252 unsigned long flags;
253 int err = 0;
254
255 char *ev = extra;
256 char *stop = ev + wrqu->data.length;
257 int i = 0;
258
259 LIBIPW_DEBUG_WX("Getting scan\n");
260
261 spin_lock_irqsave(&ieee->lock, flags);
262
263 list_for_each_entry(network, &ieee->network_list, list) {
264 i++;
265 if (stop - ev < SCAN_ITEM_SIZE) {
266 err = -E2BIG;
267 break;
268 }
269
270 if (ieee->scan_age == 0 ||
271 time_after(network->last_scanned + ieee->scan_age, jiffies))
272 ev = libipw_translate_scan(ieee, ev, stop, network,
273 info);
274 else {
275 LIBIPW_DEBUG_SCAN("Not showing network '%*pE (%pM)' due to age (%ums).\n",
276 network->ssid_len, network->ssid,
277 network->bssid,
278 elapsed_jiffies_msecs(
279 network->last_scanned));
280 }
281 }
282
283 spin_unlock_irqrestore(&ieee->lock, flags);
284
285 wrqu->data.length = ev - extra;
286 wrqu->data.flags = 0;
287
288 LIBIPW_DEBUG_WX("exit: %d networks returned.\n", i);
289
290 return err;
291 }
292
libipw_wx_set_encode(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * keybuf)293 int libipw_wx_set_encode(struct libipw_device *ieee,
294 struct iw_request_info *info,
295 union iwreq_data *wrqu, char *keybuf)
296 {
297 struct iw_point *erq = &(wrqu->encoding);
298 struct net_device *dev = ieee->dev;
299 struct libipw_security sec = {
300 .flags = 0
301 };
302 int i, key, key_provided, len;
303 struct libipw_crypt_data **crypt;
304 int host_crypto = ieee->host_encrypt || ieee->host_decrypt;
305
306 LIBIPW_DEBUG_WX("SET_ENCODE\n");
307
308 key = erq->flags & IW_ENCODE_INDEX;
309 if (key) {
310 if (key > WEP_KEYS)
311 return -EINVAL;
312 key--;
313 key_provided = 1;
314 } else {
315 key_provided = 0;
316 key = ieee->crypt_info.tx_keyidx;
317 }
318
319 LIBIPW_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
320 "provided" : "default");
321
322 crypt = &ieee->crypt_info.crypt[key];
323
324 if (erq->flags & IW_ENCODE_DISABLED) {
325 if (key_provided && *crypt) {
326 LIBIPW_DEBUG_WX("Disabling encryption on key %d.\n",
327 key);
328 libipw_crypt_delayed_deinit(&ieee->crypt_info, crypt);
329 } else
330 LIBIPW_DEBUG_WX("Disabling encryption.\n");
331
332 /* Check all the keys to see if any are still configured,
333 * and if no key index was provided, de-init them all */
334 for (i = 0; i < WEP_KEYS; i++) {
335 if (ieee->crypt_info.crypt[i] != NULL) {
336 if (key_provided)
337 break;
338 libipw_crypt_delayed_deinit(&ieee->crypt_info,
339 &ieee->crypt_info.crypt[i]);
340 }
341 }
342
343 if (i == WEP_KEYS) {
344 sec.enabled = 0;
345 sec.encrypt = 0;
346 sec.level = SEC_LEVEL_0;
347 sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
348 }
349
350 goto done;
351 }
352
353 sec.enabled = 1;
354 sec.encrypt = 1;
355 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
356
357 if (*crypt != NULL && (*crypt)->ops != NULL &&
358 strcmp((*crypt)->ops->name, "WEP") != 0) {
359 /* changing to use WEP; deinit previously used algorithm
360 * on this key */
361 libipw_crypt_delayed_deinit(&ieee->crypt_info, crypt);
362 }
363
364 if (*crypt == NULL && host_crypto) {
365 struct libipw_crypt_data *new_crypt;
366
367 /* take WEP into use */
368 new_crypt = kzalloc(sizeof(struct libipw_crypt_data),
369 GFP_KERNEL);
370 if (new_crypt == NULL)
371 return -ENOMEM;
372 new_crypt->ops = libipw_get_crypto_ops("WEP");
373 if (!new_crypt->ops) {
374 request_module("libipw_crypt_wep");
375 new_crypt->ops = libipw_get_crypto_ops("WEP");
376 }
377
378 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
379 new_crypt->priv = new_crypt->ops->init(key);
380
381 if (!new_crypt->ops || !new_crypt->priv) {
382 kfree(new_crypt);
383 new_crypt = NULL;
384
385 printk(KERN_WARNING "%s: could not initialize WEP: "
386 "load module libipw_crypt_wep\n", dev->name);
387 return -EOPNOTSUPP;
388 }
389 *crypt = new_crypt;
390 }
391
392 /* If a new key was provided, set it up */
393 if (erq->length > 0) {
394 len = erq->length <= 5 ? 5 : 13;
395 memcpy(sec.keys[key], keybuf, erq->length);
396 if (len > erq->length)
397 memset(sec.keys[key] + erq->length, 0,
398 len - erq->length);
399 LIBIPW_DEBUG_WX("Setting key %d to '%*pE' (%d:%d bytes)\n",
400 key, len, sec.keys[key],
401 erq->length, len);
402 sec.key_sizes[key] = len;
403 if (*crypt)
404 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
405 (*crypt)->priv);
406 sec.flags |= (1 << key);
407 /* This ensures a key will be activated if no key is
408 * explicitly set */
409 if (key == sec.active_key)
410 sec.flags |= SEC_ACTIVE_KEY;
411
412 } else {
413 if (host_crypto) {
414 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
415 NULL, (*crypt)->priv);
416 if (len == 0) {
417 /* Set a default key of all 0 */
418 LIBIPW_DEBUG_WX("Setting key %d to all "
419 "zero.\n", key);
420 memset(sec.keys[key], 0, 13);
421 (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
422 (*crypt)->priv);
423 sec.key_sizes[key] = 13;
424 sec.flags |= (1 << key);
425 }
426 }
427 /* No key data - just set the default TX key index */
428 if (key_provided) {
429 LIBIPW_DEBUG_WX("Setting key %d to default Tx "
430 "key.\n", key);
431 ieee->crypt_info.tx_keyidx = key;
432 sec.active_key = key;
433 sec.flags |= SEC_ACTIVE_KEY;
434 }
435 }
436 if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
437 ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
438 sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
439 WLAN_AUTH_SHARED_KEY;
440 sec.flags |= SEC_AUTH_MODE;
441 LIBIPW_DEBUG_WX("Auth: %s\n",
442 sec.auth_mode == WLAN_AUTH_OPEN ?
443 "OPEN" : "SHARED KEY");
444 }
445
446 /* For now we just support WEP, so only set that security level...
447 * TODO: When WPA is added this is one place that needs to change */
448 sec.flags |= SEC_LEVEL;
449 sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
450 sec.encode_alg[key] = SEC_ALG_WEP;
451
452 done:
453 if (ieee->set_security)
454 ieee->set_security(dev, &sec);
455
456 return 0;
457 }
458
libipw_wx_get_encode(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * keybuf)459 int libipw_wx_get_encode(struct libipw_device *ieee,
460 struct iw_request_info *info,
461 union iwreq_data *wrqu, char *keybuf)
462 {
463 struct iw_point *erq = &(wrqu->encoding);
464 int len, key;
465 struct libipw_security *sec = &ieee->sec;
466
467 LIBIPW_DEBUG_WX("GET_ENCODE\n");
468
469 key = erq->flags & IW_ENCODE_INDEX;
470 if (key) {
471 if (key > WEP_KEYS)
472 return -EINVAL;
473 key--;
474 } else
475 key = ieee->crypt_info.tx_keyidx;
476
477 erq->flags = key + 1;
478
479 if (!sec->enabled) {
480 erq->length = 0;
481 erq->flags |= IW_ENCODE_DISABLED;
482 return 0;
483 }
484
485 len = sec->key_sizes[key];
486 memcpy(keybuf, sec->keys[key], len);
487
488 erq->length = len;
489 erq->flags |= IW_ENCODE_ENABLED;
490
491 if (ieee->open_wep)
492 erq->flags |= IW_ENCODE_OPEN;
493 else
494 erq->flags |= IW_ENCODE_RESTRICTED;
495
496 return 0;
497 }
498
libipw_wx_set_encodeext(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)499 int libipw_wx_set_encodeext(struct libipw_device *ieee,
500 struct iw_request_info *info,
501 union iwreq_data *wrqu, char *extra)
502 {
503 struct net_device *dev = ieee->dev;
504 struct iw_point *encoding = &wrqu->encoding;
505 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
506 int i, idx, ret = 0;
507 int group_key = 0;
508 const char *alg, *module;
509 const struct libipw_crypto_ops *ops;
510 struct libipw_crypt_data **crypt;
511
512 struct libipw_security sec = {
513 .flags = 0,
514 };
515
516 idx = encoding->flags & IW_ENCODE_INDEX;
517 if (idx) {
518 if (idx < 1 || idx > WEP_KEYS)
519 return -EINVAL;
520 idx--;
521 } else
522 idx = ieee->crypt_info.tx_keyidx;
523
524 if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
525 crypt = &ieee->crypt_info.crypt[idx];
526 group_key = 1;
527 } else {
528 /* some Cisco APs use idx>0 for unicast in dynamic WEP */
529 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
530 return -EINVAL;
531 if (ieee->iw_mode == IW_MODE_INFRA)
532 crypt = &ieee->crypt_info.crypt[idx];
533 else
534 return -EINVAL;
535 }
536
537 sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
538 if ((encoding->flags & IW_ENCODE_DISABLED) ||
539 ext->alg == IW_ENCODE_ALG_NONE) {
540 if (*crypt)
541 libipw_crypt_delayed_deinit(&ieee->crypt_info, crypt);
542
543 for (i = 0; i < WEP_KEYS; i++)
544 if (ieee->crypt_info.crypt[i] != NULL)
545 break;
546
547 if (i == WEP_KEYS) {
548 sec.enabled = 0;
549 sec.encrypt = 0;
550 sec.level = SEC_LEVEL_0;
551 sec.flags |= SEC_LEVEL;
552 }
553 goto done;
554 }
555
556 sec.enabled = 1;
557 sec.encrypt = 1;
558
559 if (group_key ? !ieee->host_mc_decrypt :
560 !(ieee->host_encrypt || ieee->host_decrypt ||
561 ieee->host_encrypt_msdu))
562 goto skip_host_crypt;
563
564 switch (ext->alg) {
565 case IW_ENCODE_ALG_WEP:
566 alg = "WEP";
567 module = "libipw_crypt_wep";
568 break;
569 case IW_ENCODE_ALG_TKIP:
570 alg = "TKIP";
571 module = "libipw_crypt_tkip";
572 break;
573 case IW_ENCODE_ALG_CCMP:
574 alg = "CCMP";
575 module = "libipw_crypt_ccmp";
576 break;
577 default:
578 LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
579 dev->name, ext->alg);
580 ret = -EINVAL;
581 goto done;
582 }
583
584 ops = libipw_get_crypto_ops(alg);
585 if (ops == NULL) {
586 request_module(module);
587 ops = libipw_get_crypto_ops(alg);
588 }
589 if (ops == NULL) {
590 LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
591 dev->name, ext->alg);
592 ret = -EINVAL;
593 goto done;
594 }
595
596 if (*crypt == NULL || (*crypt)->ops != ops) {
597 struct libipw_crypt_data *new_crypt;
598
599 libipw_crypt_delayed_deinit(&ieee->crypt_info, crypt);
600
601 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
602 if (new_crypt == NULL) {
603 ret = -ENOMEM;
604 goto done;
605 }
606 new_crypt->ops = ops;
607 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
608 new_crypt->priv = new_crypt->ops->init(idx);
609 if (new_crypt->priv == NULL) {
610 kfree(new_crypt);
611 ret = -EINVAL;
612 goto done;
613 }
614 *crypt = new_crypt;
615 }
616
617 if (ext->key_len > 0 && (*crypt)->ops->set_key &&
618 (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
619 (*crypt)->priv) < 0) {
620 LIBIPW_DEBUG_WX("%s: key setting failed\n", dev->name);
621 ret = -EINVAL;
622 goto done;
623 }
624
625 skip_host_crypt:
626 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
627 ieee->crypt_info.tx_keyidx = idx;
628 sec.active_key = idx;
629 sec.flags |= SEC_ACTIVE_KEY;
630 }
631
632 if (ext->alg != IW_ENCODE_ALG_NONE) {
633 int key_len = clamp_val(ext->key_len, 0, SCM_KEY_LEN);
634
635 memcpy(sec.keys[idx], ext->key, key_len);
636 sec.key_sizes[idx] = key_len;
637 sec.flags |= (1 << idx);
638 if (ext->alg == IW_ENCODE_ALG_WEP) {
639 sec.encode_alg[idx] = SEC_ALG_WEP;
640 sec.flags |= SEC_LEVEL;
641 sec.level = SEC_LEVEL_1;
642 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
643 sec.encode_alg[idx] = SEC_ALG_TKIP;
644 sec.flags |= SEC_LEVEL;
645 sec.level = SEC_LEVEL_2;
646 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
647 sec.encode_alg[idx] = SEC_ALG_CCMP;
648 sec.flags |= SEC_LEVEL;
649 sec.level = SEC_LEVEL_3;
650 }
651 /* Don't set sec level for group keys. */
652 if (group_key)
653 sec.flags &= ~SEC_LEVEL;
654 }
655 done:
656 if (ieee->set_security)
657 ieee->set_security(dev, &sec);
658
659 return ret;
660 }
661
libipw_wx_get_encodeext(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)662 int libipw_wx_get_encodeext(struct libipw_device *ieee,
663 struct iw_request_info *info,
664 union iwreq_data *wrqu, char *extra)
665 {
666 struct iw_point *encoding = &wrqu->encoding;
667 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
668 struct libipw_security *sec = &ieee->sec;
669 int idx, max_key_len;
670
671 max_key_len = encoding->length - sizeof(*ext);
672 if (max_key_len < 0)
673 return -EINVAL;
674
675 idx = encoding->flags & IW_ENCODE_INDEX;
676 if (idx) {
677 if (idx < 1 || idx > WEP_KEYS)
678 return -EINVAL;
679 idx--;
680 } else
681 idx = ieee->crypt_info.tx_keyidx;
682
683 if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
684 ext->alg != IW_ENCODE_ALG_WEP)
685 if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
686 return -EINVAL;
687
688 encoding->flags = idx + 1;
689 memset(ext, 0, sizeof(*ext));
690
691 if (!sec->enabled) {
692 ext->alg = IW_ENCODE_ALG_NONE;
693 ext->key_len = 0;
694 encoding->flags |= IW_ENCODE_DISABLED;
695 } else {
696 if (sec->encode_alg[idx] == SEC_ALG_WEP)
697 ext->alg = IW_ENCODE_ALG_WEP;
698 else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
699 ext->alg = IW_ENCODE_ALG_TKIP;
700 else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
701 ext->alg = IW_ENCODE_ALG_CCMP;
702 else
703 return -EINVAL;
704
705 ext->key_len = sec->key_sizes[idx];
706 memcpy(ext->key, sec->keys[idx], ext->key_len);
707 encoding->flags |= IW_ENCODE_ENABLED;
708 if (ext->key_len &&
709 (ext->alg == IW_ENCODE_ALG_TKIP ||
710 ext->alg == IW_ENCODE_ALG_CCMP))
711 ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
712
713 }
714
715 return 0;
716 }
717
718 EXPORT_SYMBOL(libipw_wx_set_encodeext);
719 EXPORT_SYMBOL(libipw_wx_get_encodeext);
720
721 EXPORT_SYMBOL(libipw_wx_get_scan);
722 EXPORT_SYMBOL(libipw_wx_set_encode);
723 EXPORT_SYMBOL(libipw_wx_get_encode);
724