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b453872c JG |
1 | /****************************************************************************** |
2 | ||
3 | Copyright(c) 2004 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 | ******************************************************************************/ | |
bbeec90b | 32 | |
b453872c JG |
33 | #include <linux/kmod.h> |
34 | #include <linux/module.h> | |
35 | ||
36 | #include <net/ieee80211.h> | |
bbeec90b JG |
37 | #include <linux/wireless.h> |
38 | ||
b453872c JG |
39 | static const char *ieee80211_modes[] = { |
40 | "?", "a", "b", "ab", "g", "ag", "bg", "abg" | |
41 | }; | |
42 | ||
43 | #define MAX_CUSTOM_LEN 64 | |
44 | static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, | |
45 | char *start, char *stop, | |
46 | struct ieee80211_network *network) | |
47 | { | |
48 | char custom[MAX_CUSTOM_LEN]; | |
49 | char *p; | |
50 | struct iw_event iwe; | |
51 | int i, j; | |
52 | u8 max_rate, 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(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 | if (network->flags & NETWORK_EMPTY_ESSID) { | |
66 | iwe.u.data.length = sizeof("<hidden>"); | |
67 | start = iwe_stream_add_point(start, stop, &iwe, "<hidden>"); | |
68 | } else { | |
69 | iwe.u.data.length = min(network->ssid_len, (u8)32); | |
70 | start = iwe_stream_add_point(start, stop, &iwe, network->ssid); | |
71 | } | |
72 | ||
73 | /* Add the protocol name */ | |
74 | iwe.cmd = SIOCGIWNAME; | |
75 | snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s", ieee80211_modes[network->mode]); | |
76 | start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN); | |
77 | ||
78 | /* Add mode */ | |
79 | iwe.cmd = SIOCGIWMODE; | |
80 | if (network->capability & | |
1b5cca3a JG |
81 | (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { |
82 | if (network->capability & WLAN_CAPABILITY_ESS) | |
b453872c JG |
83 | iwe.u.mode = IW_MODE_MASTER; |
84 | else | |
85 | iwe.u.mode = IW_MODE_ADHOC; | |
86 | ||
87 | start = iwe_stream_add_event(start, stop, &iwe, | |
88 | 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, | |
137 | IW_EV_PARAM_LEN); | |
138 | ||
139 | iwe.cmd = IWEVCUSTOM; | |
140 | iwe.u.data.length = p - custom; | |
141 | if (iwe.u.data.length) | |
142 | start = iwe_stream_add_point(start, stop, &iwe, custom); | |
143 | ||
144 | /* Add quality statistics */ | |
145 | /* TODO: Fix these values... */ | |
146 | iwe.cmd = IWEVQUAL; | |
147 | iwe.u.qual.qual = network->stats.signal; | |
148 | iwe.u.qual.level = network->stats.rssi; | |
149 | iwe.u.qual.noise = network->stats.noise; | |
150 | iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK; | |
151 | if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) | |
152 | iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID; | |
153 | if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) | |
154 | iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID; | |
155 | if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) | |
156 | iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID; | |
157 | ||
158 | start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); | |
159 | ||
160 | iwe.cmd = IWEVCUSTOM; | |
161 | p = custom; | |
162 | ||
163 | iwe.u.data.length = p - custom; | |
164 | if (iwe.u.data.length) | |
165 | start = iwe_stream_add_point(start, stop, &iwe, custom); | |
166 | ||
167 | if (ieee->wpa_enabled && network->wpa_ie_len){ | |
168 | char buf[MAX_WPA_IE_LEN * 2 + 30]; | |
169 | ||
170 | u8 *p = buf; | |
171 | p += sprintf(p, "wpa_ie="); | |
172 | for (i = 0; i < network->wpa_ie_len; i++) { | |
173 | p += sprintf(p, "%02x", network->wpa_ie[i]); | |
174 | } | |
175 | ||
176 | memset(&iwe, 0, sizeof(iwe)); | |
177 | iwe.cmd = IWEVCUSTOM; | |
178 | iwe.u.data.length = strlen(buf); | |
179 | start = iwe_stream_add_point(start, stop, &iwe, buf); | |
180 | } | |
181 | ||
182 | if (ieee->wpa_enabled && network->rsn_ie_len){ | |
183 | char buf[MAX_WPA_IE_LEN * 2 + 30]; | |
184 | ||
185 | u8 *p = buf; | |
186 | p += sprintf(p, "rsn_ie="); | |
187 | for (i = 0; i < network->rsn_ie_len; i++) { | |
188 | p += sprintf(p, "%02x", network->rsn_ie[i]); | |
189 | } | |
190 | ||
191 | memset(&iwe, 0, sizeof(iwe)); | |
192 | iwe.cmd = IWEVCUSTOM; | |
193 | iwe.u.data.length = strlen(buf); | |
194 | start = iwe_stream_add_point(start, stop, &iwe, buf); | |
195 | } | |
196 | ||
197 | /* Add EXTRA: Age to display seconds since last beacon/probe response | |
198 | * for given network. */ | |
199 | iwe.cmd = IWEVCUSTOM; | |
200 | p = custom; | |
201 | p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), | |
202 | " Last beacon: %lums ago", (jiffies - network->last_scanned) / (HZ / 100)); | |
203 | iwe.u.data.length = p - custom; | |
204 | if (iwe.u.data.length) | |
205 | start = iwe_stream_add_point(start, stop, &iwe, custom); | |
206 | ||
207 | ||
208 | return start; | |
209 | } | |
210 | ||
211 | int ieee80211_wx_get_scan(struct ieee80211_device *ieee, | |
212 | struct iw_request_info *info, | |
213 | union iwreq_data *wrqu, char *extra) | |
214 | { | |
215 | struct ieee80211_network *network; | |
216 | unsigned long flags; | |
217 | ||
218 | char *ev = extra; | |
219 | char *stop = ev + IW_SCAN_MAX_DATA; | |
220 | int i = 0; | |
221 | ||
222 | IEEE80211_DEBUG_WX("Getting scan\n"); | |
223 | ||
224 | spin_lock_irqsave(&ieee->lock, flags); | |
225 | ||
226 | list_for_each_entry(network, &ieee->network_list, list) { | |
227 | i++; | |
228 | if (ieee->scan_age == 0 || | |
229 | time_after(network->last_scanned + ieee->scan_age, jiffies)) | |
230 | ev = ipw2100_translate_scan(ieee, ev, stop, network); | |
231 | else | |
232 | IEEE80211_DEBUG_SCAN( | |
233 | "Not showing network '%s (" | |
234 | MAC_FMT ")' due to age (%lums).\n", | |
235 | escape_essid(network->ssid, | |
236 | network->ssid_len), | |
237 | MAC_ARG(network->bssid), | |
238 | (jiffies - network->last_scanned) / (HZ / 100)); | |
239 | } | |
240 | ||
241 | spin_unlock_irqrestore(&ieee->lock, flags); | |
242 | ||
243 | wrqu->data.length = ev - extra; | |
244 | wrqu->data.flags = 0; | |
245 | ||
246 | IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | int ieee80211_wx_set_encode(struct ieee80211_device *ieee, | |
252 | struct iw_request_info *info, | |
253 | union iwreq_data *wrqu, char *keybuf) | |
254 | { | |
255 | struct iw_point *erq = &(wrqu->encoding); | |
256 | struct net_device *dev = ieee->dev; | |
257 | struct ieee80211_security sec = { | |
258 | .flags = 0 | |
259 | }; | |
260 | int i, key, key_provided, len; | |
261 | struct ieee80211_crypt_data **crypt; | |
262 | ||
263 | IEEE80211_DEBUG_WX("SET_ENCODE\n"); | |
264 | ||
265 | key = erq->flags & IW_ENCODE_INDEX; | |
266 | if (key) { | |
267 | if (key > WEP_KEYS) | |
268 | return -EINVAL; | |
269 | key--; | |
270 | key_provided = 1; | |
271 | } else { | |
272 | key_provided = 0; | |
273 | key = ieee->tx_keyidx; | |
274 | } | |
275 | ||
276 | IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ? | |
277 | "provided" : "default"); | |
278 | ||
279 | crypt = &ieee->crypt[key]; | |
280 | ||
281 | if (erq->flags & IW_ENCODE_DISABLED) { | |
282 | if (key_provided && *crypt) { | |
283 | IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n", | |
284 | key); | |
285 | ieee80211_crypt_delayed_deinit(ieee, crypt); | |
286 | } else | |
287 | IEEE80211_DEBUG_WX("Disabling encryption.\n"); | |
288 | ||
289 | /* Check all the keys to see if any are still configured, | |
290 | * and if no key index was provided, de-init them all */ | |
291 | for (i = 0; i < WEP_KEYS; i++) { | |
292 | if (ieee->crypt[i] != NULL) { | |
293 | if (key_provided) | |
294 | break; | |
295 | ieee80211_crypt_delayed_deinit( | |
296 | ieee, &ieee->crypt[i]); | |
297 | } | |
298 | } | |
299 | ||
300 | if (i == WEP_KEYS) { | |
301 | sec.enabled = 0; | |
302 | sec.level = SEC_LEVEL_0; | |
303 | sec.flags |= SEC_ENABLED | SEC_LEVEL; | |
304 | } | |
305 | ||
306 | goto done; | |
307 | } | |
308 | ||
309 | ||
310 | ||
311 | sec.enabled = 1; | |
312 | sec.flags |= SEC_ENABLED; | |
313 | ||
314 | if (*crypt != NULL && (*crypt)->ops != NULL && | |
315 | strcmp((*crypt)->ops->name, "WEP") != 0) { | |
316 | /* changing to use WEP; deinit previously used algorithm | |
317 | * on this key */ | |
318 | ieee80211_crypt_delayed_deinit(ieee, crypt); | |
319 | } | |
320 | ||
321 | if (*crypt == NULL) { | |
322 | struct ieee80211_crypt_data *new_crypt; | |
323 | ||
324 | /* take WEP into use */ | |
325 | new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data), | |
326 | GFP_KERNEL); | |
327 | if (new_crypt == NULL) | |
328 | return -ENOMEM; | |
329 | memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data)); | |
330 | new_crypt->ops = ieee80211_get_crypto_ops("WEP"); | |
331 | if (!new_crypt->ops) { | |
332 | request_module("ieee80211_crypt_wep"); | |
333 | new_crypt->ops = ieee80211_get_crypto_ops("WEP"); | |
334 | } | |
335 | ||
336 | if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) | |
337 | new_crypt->priv = new_crypt->ops->init(key); | |
338 | ||
339 | if (!new_crypt->ops || !new_crypt->priv) { | |
340 | kfree(new_crypt); | |
341 | new_crypt = NULL; | |
342 | ||
343 | printk(KERN_WARNING "%s: could not initialize WEP: " | |
344 | "load module ieee80211_crypt_wep\n", | |
345 | dev->name); | |
346 | return -EOPNOTSUPP; | |
347 | } | |
348 | *crypt = new_crypt; | |
349 | } | |
350 | ||
351 | /* If a new key was provided, set it up */ | |
352 | if (erq->length > 0) { | |
353 | len = erq->length <= 5 ? 5 : 13; | |
354 | memcpy(sec.keys[key], keybuf, erq->length); | |
355 | if (len > erq->length) | |
356 | memset(sec.keys[key] + erq->length, 0, | |
357 | len - erq->length); | |
358 | IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n", | |
359 | key, escape_essid(sec.keys[key], len), | |
360 | erq->length, len); | |
361 | sec.key_sizes[key] = len; | |
362 | (*crypt)->ops->set_key(sec.keys[key], len, NULL, | |
363 | (*crypt)->priv); | |
364 | sec.flags |= (1 << key); | |
365 | /* This ensures a key will be activated if no key is | |
366 | * explicitely set */ | |
367 | if (key == sec.active_key) | |
368 | sec.flags |= SEC_ACTIVE_KEY; | |
369 | } else { | |
370 | len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN, | |
371 | NULL, (*crypt)->priv); | |
372 | if (len == 0) { | |
373 | /* Set a default key of all 0 */ | |
374 | IEEE80211_DEBUG_WX("Setting key %d to all zero.\n", | |
375 | key); | |
376 | memset(sec.keys[key], 0, 13); | |
377 | (*crypt)->ops->set_key(sec.keys[key], 13, NULL, | |
378 | (*crypt)->priv); | |
379 | sec.key_sizes[key] = 13; | |
380 | sec.flags |= (1 << key); | |
381 | } | |
382 | ||
383 | /* No key data - just set the default TX key index */ | |
384 | if (key_provided) { | |
385 | IEEE80211_DEBUG_WX( | |
386 | "Setting key %d to default Tx key.\n", key); | |
387 | ieee->tx_keyidx = key; | |
388 | sec.active_key = key; | |
389 | sec.flags |= SEC_ACTIVE_KEY; | |
390 | } | |
391 | } | |
392 | ||
393 | done: | |
394 | ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED); | |
395 | sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY; | |
396 | sec.flags |= SEC_AUTH_MODE; | |
397 | IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ? | |
398 | "OPEN" : "SHARED KEY"); | |
399 | ||
400 | /* For now we just support WEP, so only set that security level... | |
401 | * TODO: When WPA is added this is one place that needs to change */ | |
402 | sec.flags |= SEC_LEVEL; | |
403 | sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */ | |
404 | ||
405 | if (ieee->set_security) | |
406 | ieee->set_security(dev, &sec); | |
407 | ||
408 | /* Do not reset port if card is in Managed mode since resetting will | |
409 | * generate new IEEE 802.11 authentication which may end up in looping | |
410 | * with IEEE 802.1X. If your hardware requires a reset after WEP | |
411 | * configuration (for example... Prism2), implement the reset_port in | |
412 | * the callbacks structures used to initialize the 802.11 stack. */ | |
413 | if (ieee->reset_on_keychange && | |
414 | ieee->iw_mode != IW_MODE_INFRA && | |
415 | ieee->reset_port && ieee->reset_port(dev)) { | |
416 | printk(KERN_DEBUG "%s: reset_port failed\n", dev->name); | |
417 | return -EINVAL; | |
418 | } | |
419 | return 0; | |
420 | } | |
421 | ||
422 | int ieee80211_wx_get_encode(struct ieee80211_device *ieee, | |
423 | struct iw_request_info *info, | |
424 | union iwreq_data *wrqu, char *keybuf) | |
425 | { | |
426 | struct iw_point *erq = &(wrqu->encoding); | |
427 | int len, key; | |
428 | struct ieee80211_crypt_data *crypt; | |
429 | ||
430 | IEEE80211_DEBUG_WX("GET_ENCODE\n"); | |
431 | ||
432 | key = erq->flags & IW_ENCODE_INDEX; | |
433 | if (key) { | |
434 | if (key > WEP_KEYS) | |
435 | return -EINVAL; | |
436 | key--; | |
437 | } else | |
438 | key = ieee->tx_keyidx; | |
439 | ||
440 | crypt = ieee->crypt[key]; | |
441 | erq->flags = key + 1; | |
442 | ||
443 | if (crypt == NULL || crypt->ops == NULL) { | |
444 | erq->length = 0; | |
445 | erq->flags |= IW_ENCODE_DISABLED; | |
446 | return 0; | |
447 | } | |
448 | ||
449 | if (strcmp(crypt->ops->name, "WEP") != 0) { | |
450 | /* only WEP is supported with wireless extensions, so just | |
451 | * report that encryption is used */ | |
452 | erq->length = 0; | |
453 | erq->flags |= IW_ENCODE_ENABLED; | |
454 | return 0; | |
455 | } | |
456 | ||
457 | len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv); | |
458 | erq->length = (len >= 0 ? len : 0); | |
459 | ||
460 | erq->flags |= IW_ENCODE_ENABLED; | |
461 | ||
462 | if (ieee->open_wep) | |
463 | erq->flags |= IW_ENCODE_OPEN; | |
464 | else | |
465 | erq->flags |= IW_ENCODE_RESTRICTED; | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | EXPORT_SYMBOL(ieee80211_wx_get_scan); | |
471 | EXPORT_SYMBOL(ieee80211_wx_set_encode); | |
472 | EXPORT_SYMBOL(ieee80211_wx_get_encode); |