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b453872c JG |
1 | /****************************************************************************** |
2 | ||
ebeaddcc | 3 | Copyright(c) 2004-2005 Intel Corporation. All rights reserved. |
b453872c JG |
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 | |
85d32e7b JM |
8 | <j@w1.fi> |
9 | Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi> | |
b453872c JG |
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> | |
42e349fd | 35 | #include <linux/jiffies.h> |
b453872c | 36 | |
9387b7ca | 37 | #include <net/lib80211.h> |
bbeec90b JG |
38 | #include <linux/wireless.h> |
39 | ||
b0a4e7d8 | 40 | #include "libipw.h" |
f3734ee6 | 41 | |
b0a4e7d8 | 42 | static const char *libipw_modes[] = { |
b453872c JG |
43 | "?", "a", "b", "ab", "g", "ag", "bg", "abg" |
44 | }; | |
45 | ||
c3d72b96 DW |
46 | static 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 | ||
b453872c | 56 | #define MAX_CUSTOM_LEN 64 |
b0a4e7d8 | 57 | static char *libipw_translate_scan(struct libipw_device *ieee, |
ccc58057 | 58 | char *start, char *stop, |
b0a4e7d8 | 59 | struct libipw_network *network, |
ccc58057 | 60 | struct iw_request_info *info) |
b453872c JG |
61 | { |
62 | char custom[MAX_CUSTOM_LEN]; | |
63 | char *p; | |
64 | struct iw_event iwe; | |
65 | int i, j; | |
09593047 ZY |
66 | char *current_val; /* For rates */ |
67 | u8 rate; | |
b453872c JG |
68 | |
69 | /* First entry *MUST* be the AP MAC address */ | |
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); | |
ccc58057 | 73 | start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN); |
b453872c JG |
74 | |
75 | /* Remaining entries will be displayed in the order we provide them */ | |
76 | ||
77 | /* Add the ESSID */ | |
78 | iwe.cmd = SIOCGIWESSID; | |
79 | iwe.u.data.flags = 1; | |
c5d3dce8 JL |
80 | iwe.u.data.length = min(network->ssid_len, (u8) 32); |
81 | start = iwe_stream_add_point(info, start, stop, | |
82 | &iwe, network->ssid); | |
b453872c JG |
83 | |
84 | /* Add the protocol name */ | |
85 | iwe.cmd = SIOCGIWNAME; | |
0edd5b44 | 86 | snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s", |
b0a4e7d8 | 87 | libipw_modes[network->mode]); |
ccc58057 | 88 | start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN); |
b453872c | 89 | |
0edd5b44 JG |
90 | /* Add mode */ |
91 | iwe.cmd = SIOCGIWMODE; | |
92 | if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { | |
1b5cca3a | 93 | if (network->capability & WLAN_CAPABILITY_ESS) |
b453872c JG |
94 | iwe.u.mode = IW_MODE_MASTER; |
95 | else | |
96 | iwe.u.mode = IW_MODE_ADHOC; | |
97 | ||
ccc58057 DM |
98 | start = iwe_stream_add_event(info, start, stop, |
99 | &iwe, IW_EV_UINT_LEN); | |
b453872c JG |
100 | } |
101 | ||
93afe3da | 102 | /* Add channel and frequency */ |
90869b24 | 103 | /* Note : userspace automatically computes channel using iwrange */ |
b453872c | 104 | iwe.cmd = SIOCGIWFREQ; |
b0a4e7d8 | 105 | iwe.u.freq.m = libipw_channel_to_freq(ieee, network->channel); |
93afe3da | 106 | iwe.u.freq.e = 6; |
90869b24 | 107 | iwe.u.freq.i = 0; |
ccc58057 | 108 | start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN); |
93afe3da | 109 | |
b453872c JG |
110 | /* Add encryption capability */ |
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; | |
ccc58057 DM |
117 | start = iwe_stream_add_point(info, start, stop, |
118 | &iwe, network->ssid); | |
b453872c JG |
119 | |
120 | /* Add basic and extended rates */ | |
09593047 ZY |
121 | /* Rate : stuffing multiple values in a single event require a bit |
122 | * more of magic - Jean II */ | |
ccc58057 | 123 | current_val = start + iwe_stream_lcp_len(info); |
09593047 ZY |
124 | iwe.cmd = SIOCGIWRATE; |
125 | /* Those two flags are ignored... */ | |
126 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
127 | ||
0edd5b44 | 128 | for (i = 0, j = 0; i < network->rates_len;) { |
b453872c JG |
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; | |
09593047 ZY |
135 | /* Bit rate given in 500 kb/s units (+ 0x80) */ |
136 | iwe.u.bitrate.value = ((rate & 0x7f) * 500000); | |
137 | /* Add new value to event */ | |
ccc58057 DM |
138 | current_val = iwe_stream_add_value(info, start, current_val, |
139 | stop, &iwe, IW_EV_PARAM_LEN); | |
b453872c JG |
140 | } |
141 | for (; j < network->rates_ex_len; j++) { | |
142 | rate = network->rates_ex[j] & 0x7F; | |
09593047 ZY |
143 | /* Bit rate given in 500 kb/s units (+ 0x80) */ |
144 | iwe.u.bitrate.value = ((rate & 0x7f) * 500000); | |
145 | /* Add new value to event */ | |
ccc58057 DM |
146 | current_val = iwe_stream_add_value(info, start, current_val, |
147 | stop, &iwe, IW_EV_PARAM_LEN); | |
b453872c | 148 | } |
09593047 | 149 | /* Check if we added any rate */ |
ccc58057 | 150 | if ((current_val - start) > iwe_stream_lcp_len(info)) |
09593047 | 151 | start = current_val; |
b453872c JG |
152 | |
153 | /* Add quality statistics */ | |
b453872c | 154 | iwe.cmd = IWEVQUAL; |
b1b508e1 JK |
155 | iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED | |
156 | IW_QUAL_NOISE_UPDATED; | |
157 | ||
b0a4e7d8 | 158 | if (!(network->stats.mask & LIBIPW_STATMASK_RSSI)) { |
b1b508e1 JK |
159 | iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID | |
160 | IW_QUAL_LEVEL_INVALID; | |
161 | iwe.u.qual.qual = 0; | |
b1b508e1 | 162 | } else { |
757d18fa JB |
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) + | |
81f87520 JK |
172 | 62 * (ieee->perfect_rssi - |
173 | network->stats.rssi))) / | |
174 | ((ieee->perfect_rssi - | |
175 | ieee->worst_rssi) * (ieee->perfect_rssi - | |
176 | ieee->worst_rssi)); | |
b1b508e1 JK |
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 | ||
b0a4e7d8 | 183 | if (!(network->stats.mask & LIBIPW_STATMASK_NOISE)) { |
b453872c | 184 | iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID; |
b1b508e1 JK |
185 | iwe.u.qual.noise = 0; |
186 | } else { | |
187 | iwe.u.qual.noise = network->stats.noise; | |
188 | } | |
b453872c | 189 | |
b0a4e7d8 | 190 | if (!(network->stats.mask & LIBIPW_STATMASK_SIGNAL)) { |
7bd64366 ZY |
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 | ||
ccc58057 | 197 | start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN); |
b453872c JG |
198 | |
199 | iwe.cmd = IWEVCUSTOM; | |
200 | p = custom; | |
201 | ||
202 | iwe.u.data.length = p - custom; | |
203 | if (iwe.u.data.length) | |
ccc58057 | 204 | start = iwe_stream_add_point(info, start, stop, &iwe, custom); |
b453872c | 205 | |
47168082 | 206 | memset(&iwe, 0, sizeof(iwe)); |
20d64713 | 207 | if (network->wpa_ie_len) { |
47168082 ZY |
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; | |
ccc58057 | 212 | start = iwe_stream_add_point(info, start, stop, &iwe, buf); |
b453872c JG |
213 | } |
214 | ||
47168082 | 215 | memset(&iwe, 0, sizeof(iwe)); |
20d64713 | 216 | if (network->rsn_ie_len) { |
47168082 ZY |
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; | |
ccc58057 | 221 | start = iwe_stream_add_point(info, start, stop, &iwe, buf); |
b453872c JG |
222 | } |
223 | ||
224 | /* Add EXTRA: Age to display seconds since last beacon/probe response | |
225 | * for given network. */ | |
226 | iwe.cmd = IWEVCUSTOM; | |
227 | p = custom; | |
228 | p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), | |
c3d72b96 DW |
229 | " Last beacon: %ums ago", |
230 | elapsed_jiffies_msecs(network->last_scanned)); | |
b453872c JG |
231 | iwe.u.data.length = p - custom; |
232 | if (iwe.u.data.length) | |
ccc58057 | 233 | start = iwe_stream_add_point(info, start, stop, &iwe, custom); |
b453872c | 234 | |
7bd64366 ZY |
235 | /* Add spectrum management information */ |
236 | iwe.cmd = -1; | |
237 | p = custom; | |
238 | p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: "); | |
239 | ||
b0a4e7d8 JL |
240 | if (libipw_get_channel_flags(ieee, network->channel) & |
241 | LIBIPW_CH_INVALID) { | |
7bd64366 ZY |
242 | iwe.cmd = IWEVCUSTOM; |
243 | p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID "); | |
244 | } | |
245 | ||
b0a4e7d8 JL |
246 | if (libipw_get_channel_flags(ieee, network->channel) & |
247 | LIBIPW_CH_RADAR_DETECT) { | |
7bd64366 ZY |
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; | |
ccc58057 | 254 | start = iwe_stream_add_point(info, start, stop, &iwe, custom); |
7bd64366 ZY |
255 | } |
256 | ||
b453872c JG |
257 | return start; |
258 | } | |
259 | ||
55cd94aa ZY |
260 | #define SCAN_ITEM_SIZE 128 |
261 | ||
b0a4e7d8 | 262 | int libipw_wx_get_scan(struct libipw_device *ieee, |
b453872c JG |
263 | struct iw_request_info *info, |
264 | union iwreq_data *wrqu, char *extra) | |
265 | { | |
b0a4e7d8 | 266 | struct libipw_network *network; |
b453872c | 267 | unsigned long flags; |
55cd94aa | 268 | int err = 0; |
b453872c JG |
269 | |
270 | char *ev = extra; | |
55cd94aa | 271 | char *stop = ev + wrqu->data.length; |
b453872c | 272 | int i = 0; |
9387b7ca | 273 | DECLARE_SSID_BUF(ssid); |
b453872c | 274 | |
b0a4e7d8 | 275 | LIBIPW_DEBUG_WX("Getting scan\n"); |
b453872c JG |
276 | |
277 | spin_lock_irqsave(&ieee->lock, flags); | |
278 | ||
279 | list_for_each_entry(network, &ieee->network_list, list) { | |
280 | i++; | |
55cd94aa ZY |
281 | if (stop - ev < SCAN_ITEM_SIZE) { |
282 | err = -E2BIG; | |
283 | break; | |
284 | } | |
285 | ||
b453872c JG |
286 | if (ieee->scan_age == 0 || |
287 | time_after(network->last_scanned + ieee->scan_age, jiffies)) | |
b0a4e7d8 | 288 | ev = libipw_translate_scan(ieee, ev, stop, network, |
ccc58057 | 289 | info); |
c3d72b96 | 290 | else { |
b0a4e7d8 | 291 | LIBIPW_DEBUG_SCAN("Not showing network '%s (" |
c3d72b96 | 292 | "%pM)' due to age (%ums).\n", |
9387b7ca | 293 | print_ssid(ssid, network->ssid, |
7e272fcf | 294 | network->ssid_len), |
e174961c | 295 | network->bssid, |
c3d72b96 DW |
296 | elapsed_jiffies_msecs( |
297 | network->last_scanned)); | |
298 | } | |
b453872c JG |
299 | } |
300 | ||
301 | spin_unlock_irqrestore(&ieee->lock, flags); | |
302 | ||
0edd5b44 | 303 | wrqu->data.length = ev - extra; |
b453872c JG |
304 | wrqu->data.flags = 0; |
305 | ||
b0a4e7d8 | 306 | LIBIPW_DEBUG_WX("exit: %d networks returned.\n", i); |
b453872c | 307 | |
55cd94aa | 308 | return err; |
b453872c JG |
309 | } |
310 | ||
b0a4e7d8 | 311 | int libipw_wx_set_encode(struct libipw_device *ieee, |
b453872c JG |
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; | |
b0a4e7d8 | 317 | struct libipw_security sec = { |
b453872c JG |
318 | .flags = 0 |
319 | }; | |
320 | int i, key, key_provided, len; | |
274bfb8d | 321 | struct lib80211_crypt_data **crypt; |
a4bf26f3 | 322 | int host_crypto = ieee->host_encrypt || ieee->host_decrypt || ieee->host_build_iv; |
9387b7ca | 323 | DECLARE_SSID_BUF(ssid); |
b453872c | 324 | |
b0a4e7d8 | 325 | LIBIPW_DEBUG_WX("SET_ENCODE\n"); |
b453872c JG |
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; | |
274bfb8d | 335 | key = ieee->crypt_info.tx_keyidx; |
b453872c JG |
336 | } |
337 | ||
b0a4e7d8 | 338 | LIBIPW_DEBUG_WX("Key: %d [%s]\n", key, key_provided ? |
b453872c JG |
339 | "provided" : "default"); |
340 | ||
274bfb8d | 341 | crypt = &ieee->crypt_info.crypt[key]; |
b453872c JG |
342 | |
343 | if (erq->flags & IW_ENCODE_DISABLED) { | |
344 | if (key_provided && *crypt) { | |
b0a4e7d8 | 345 | LIBIPW_DEBUG_WX("Disabling encryption on key %d.\n", |
b453872c | 346 | key); |
274bfb8d | 347 | lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); |
b453872c | 348 | } else |
b0a4e7d8 | 349 | LIBIPW_DEBUG_WX("Disabling encryption.\n"); |
b453872c JG |
350 | |
351 | /* Check all the keys to see if any are still configured, | |
352 | * and if no key index was provided, de-init them all */ | |
353 | for (i = 0; i < WEP_KEYS; i++) { | |
274bfb8d | 354 | if (ieee->crypt_info.crypt[i] != NULL) { |
b453872c JG |
355 | if (key_provided) |
356 | break; | |
274bfb8d JL |
357 | lib80211_crypt_delayed_deinit(&ieee->crypt_info, |
358 | &ieee->crypt_info.crypt[i]); | |
b453872c JG |
359 | } |
360 | } | |
361 | ||
362 | if (i == WEP_KEYS) { | |
363 | sec.enabled = 0; | |
f1bf6638 | 364 | sec.encrypt = 0; |
b453872c | 365 | sec.level = SEC_LEVEL_0; |
259bf1fd | 366 | sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT; |
b453872c JG |
367 | } |
368 | ||
369 | goto done; | |
370 | } | |
371 | ||
b453872c | 372 | sec.enabled = 1; |
f1bf6638 | 373 | sec.encrypt = 1; |
259bf1fd | 374 | sec.flags |= SEC_ENABLED | SEC_ENCRYPT; |
b453872c JG |
375 | |
376 | if (*crypt != NULL && (*crypt)->ops != NULL && | |
377 | strcmp((*crypt)->ops->name, "WEP") != 0) { | |
378 | /* changing to use WEP; deinit previously used algorithm | |
379 | * on this key */ | |
274bfb8d | 380 | lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); |
b453872c JG |
381 | } |
382 | ||
f1bf6638 | 383 | if (*crypt == NULL && host_crypto) { |
274bfb8d | 384 | struct lib80211_crypt_data *new_crypt; |
b453872c JG |
385 | |
386 | /* take WEP into use */ | |
274bfb8d | 387 | new_crypt = kzalloc(sizeof(struct lib80211_crypt_data), |
b453872c JG |
388 | GFP_KERNEL); |
389 | if (new_crypt == NULL) | |
390 | return -ENOMEM; | |
274bfb8d | 391 | new_crypt->ops = lib80211_get_crypto_ops("WEP"); |
b453872c | 392 | if (!new_crypt->ops) { |
274bfb8d JL |
393 | request_module("lib80211_crypt_wep"); |
394 | new_crypt->ops = lib80211_get_crypto_ops("WEP"); | |
b453872c JG |
395 | } |
396 | ||
397 | if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) | |
6eb6edf0 | 398 | new_crypt->priv = new_crypt->ops->init(key); |
b453872c JG |
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: " | |
274bfb8d | 405 | "load module lib80211_crypt_wep\n", dev->name); |
b453872c JG |
406 | return -EOPNOTSUPP; |
407 | } | |
408 | *crypt = new_crypt; | |
409 | } | |
410 | ||
411 | /* If a new key was provided, set it up */ | |
412 | if (erq->length > 0) { | |
b0a4e7d8 | 413 | #ifdef CONFIG_LIBIPW_DEBUG |
2a941ecb HS |
414 | DECLARE_SSID_BUF(ssid); |
415 | #endif | |
416 | ||
b453872c JG |
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); | |
b0a4e7d8 | 422 | LIBIPW_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n", |
9387b7ca | 423 | key, print_ssid(ssid, sec.keys[key], len), |
b453872c JG |
424 | erq->length, len); |
425 | sec.key_sizes[key] = len; | |
f1bf6638 JK |
426 | if (*crypt) |
427 | (*crypt)->ops->set_key(sec.keys[key], len, NULL, | |
428 | (*crypt)->priv); | |
b453872c JG |
429 | sec.flags |= (1 << key); |
430 | /* This ensures a key will be activated if no key is | |
c03983ac | 431 | * explicitly set */ |
b453872c JG |
432 | if (key == sec.active_key) |
433 | sec.flags |= SEC_ACTIVE_KEY; | |
f1bf6638 | 434 | |
b453872c | 435 | } else { |
f1bf6638 JK |
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 | /* Set a default key of all 0 */ | |
b0a4e7d8 | 441 | LIBIPW_DEBUG_WX("Setting key %d to all " |
f1bf6638 JK |
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 | } | |
b453872c | 449 | } |
b453872c JG |
450 | /* No key data - just set the default TX key index */ |
451 | if (key_provided) { | |
b0a4e7d8 | 452 | LIBIPW_DEBUG_WX("Setting key %d to default Tx " |
f1bf6638 | 453 | "key.\n", key); |
274bfb8d | 454 | ieee->crypt_info.tx_keyidx = key; |
b453872c JG |
455 | sec.active_key = key; |
456 | sec.flags |= SEC_ACTIVE_KEY; | |
457 | } | |
458 | } | |
7dc888fe JK |
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; | |
b0a4e7d8 | 464 | LIBIPW_DEBUG_WX("Auth: %s\n", |
7dc888fe JK |
465 | sec.auth_mode == WLAN_AUTH_OPEN ? |
466 | "OPEN" : "SHARED KEY"); | |
467 | } | |
b453872c JG |
468 | |
469 | /* For now we just support WEP, so only set that security level... | |
470 | * TODO: When WPA is added this is one place that needs to change */ | |
471 | sec.flags |= SEC_LEVEL; | |
0edd5b44 | 472 | sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */ |
e0d369d1 | 473 | sec.encode_alg[key] = SEC_ALG_WEP; |
b453872c | 474 | |
259bf1fd | 475 | done: |
b453872c JG |
476 | if (ieee->set_security) |
477 | ieee->set_security(dev, &sec); | |
478 | ||
479 | /* Do not reset port if card is in Managed mode since resetting will | |
480 | * generate new IEEE 802.11 authentication which may end up in looping | |
481 | * with IEEE 802.1X. If your hardware requires a reset after WEP | |
482 | * configuration (for example... Prism2), implement the reset_port in | |
483 | * the callbacks structures used to initialize the 802.11 stack. */ | |
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 | ||
b0a4e7d8 | 493 | int libipw_wx_get_encode(struct libipw_device *ieee, |
b453872c JG |
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; | |
274bfb8d | 499 | struct lib80211_crypt_data *crypt; |
b0a4e7d8 | 500 | struct libipw_security *sec = &ieee->sec; |
b453872c | 501 | |
b0a4e7d8 | 502 | LIBIPW_DEBUG_WX("GET_ENCODE\n"); |
b453872c JG |
503 | |
504 | key = erq->flags & IW_ENCODE_INDEX; | |
505 | if (key) { | |
506 | if (key > WEP_KEYS) | |
507 | return -EINVAL; | |
508 | key--; | |
509 | } else | |
274bfb8d | 510 | key = ieee->crypt_info.tx_keyidx; |
b453872c | 511 | |
274bfb8d | 512 | crypt = ieee->crypt_info.crypt[key]; |
b453872c JG |
513 | erq->flags = key + 1; |
514 | ||
f1bf6638 | 515 | if (!sec->enabled) { |
b453872c JG |
516 | erq->length = 0; |
517 | erq->flags |= IW_ENCODE_DISABLED; | |
518 | return 0; | |
519 | } | |
520 | ||
f1bf6638 JK |
521 | len = sec->key_sizes[key]; |
522 | memcpy(keybuf, sec->keys[key], len); | |
b453872c | 523 | |
6274115c | 524 | erq->length = len; |
b453872c JG |
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 | ||
b0a4e7d8 | 535 | int libipw_wx_set_encodeext(struct libipw_device *ieee, |
e0d369d1 JK |
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; | |
ccd0fda3 | 543 | int group_key = 0; |
e0d369d1 | 544 | const char *alg, *module; |
274bfb8d JL |
545 | struct lib80211_crypto_ops *ops; |
546 | struct lib80211_crypt_data **crypt; | |
e0d369d1 | 547 | |
b0a4e7d8 | 548 | struct libipw_security sec = { |
e0d369d1 JK |
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 | |
274bfb8d | 558 | idx = ieee->crypt_info.tx_keyidx; |
e0d369d1 | 559 | |
ccd0fda3 | 560 | if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) { |
274bfb8d | 561 | crypt = &ieee->crypt_info.crypt[idx]; |
ccd0fda3 JK |
562 | group_key = 1; |
563 | } else { | |
e189277a VB |
564 | /* some Cisco APs use idx>0 for unicast in dynamic WEP */ |
565 | if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP) | |
e0d369d1 JK |
566 | return -EINVAL; |
567 | if (ieee->iw_mode == IW_MODE_INFRA) | |
274bfb8d | 568 | crypt = &ieee->crypt_info.crypt[idx]; |
e0d369d1 JK |
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) | |
274bfb8d | 577 | lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); |
e0d369d1 JK |
578 | |
579 | for (i = 0; i < WEP_KEYS; i++) | |
274bfb8d | 580 | if (ieee->crypt_info.crypt[i] != NULL) |
e0d369d1 JK |
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 | ||
ccd0fda3 JK |
595 | if (group_key ? !ieee->host_mc_decrypt : |
596 | !(ieee->host_encrypt || ieee->host_decrypt || | |
597 | ieee->host_encrypt_msdu)) | |
e0d369d1 JK |
598 | goto skip_host_crypt; |
599 | ||
600 | switch (ext->alg) { | |
601 | case IW_ENCODE_ALG_WEP: | |
602 | alg = "WEP"; | |
274bfb8d | 603 | module = "lib80211_crypt_wep"; |
e0d369d1 JK |
604 | break; |
605 | case IW_ENCODE_ALG_TKIP: | |
606 | alg = "TKIP"; | |
274bfb8d | 607 | module = "lib80211_crypt_tkip"; |
e0d369d1 JK |
608 | break; |
609 | case IW_ENCODE_ALG_CCMP: | |
610 | alg = "CCMP"; | |
274bfb8d | 611 | module = "lib80211_crypt_ccmp"; |
e0d369d1 JK |
612 | break; |
613 | default: | |
b0a4e7d8 | 614 | LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n", |
e0d369d1 JK |
615 | dev->name, ext->alg); |
616 | ret = -EINVAL; | |
617 | goto done; | |
618 | } | |
619 | ||
274bfb8d | 620 | ops = lib80211_get_crypto_ops(alg); |
e0d369d1 JK |
621 | if (ops == NULL) { |
622 | request_module(module); | |
274bfb8d | 623 | ops = lib80211_get_crypto_ops(alg); |
e0d369d1 JK |
624 | } |
625 | if (ops == NULL) { | |
b0a4e7d8 | 626 | LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n", |
e0d369d1 JK |
627 | dev->name, ext->alg); |
628 | ret = -EINVAL; | |
629 | goto done; | |
630 | } | |
631 | ||
632 | if (*crypt == NULL || (*crypt)->ops != ops) { | |
274bfb8d | 633 | struct lib80211_crypt_data *new_crypt; |
e0d369d1 | 634 | |
274bfb8d | 635 | lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); |
e0d369d1 | 636 | |
0da974f4 | 637 | new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL); |
e0d369d1 JK |
638 | if (new_crypt == NULL) { |
639 | ret = -ENOMEM; | |
640 | goto done; | |
641 | } | |
e0d369d1 JK |
642 | new_crypt->ops = ops; |
643 | if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) | |
6eb6edf0 | 644 | new_crypt->priv = new_crypt->ops->init(idx); |
e0d369d1 JK |
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) { | |
b0a4e7d8 | 656 | LIBIPW_DEBUG_WX("%s: key setting failed\n", dev->name); |
e0d369d1 JK |
657 | ret = -EINVAL; |
658 | goto done; | |
659 | } | |
660 | ||
661 | skip_host_crypt: | |
662 | if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) { | |
274bfb8d | 663 | ieee->crypt_info.tx_keyidx = idx; |
e0d369d1 JK |
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 | } | |
ccd0fda3 JK |
685 | /* Don't set sec level for group keys. */ |
686 | if (group_key) | |
687 | sec.flags &= ~SEC_LEVEL; | |
e0d369d1 JK |
688 | } |
689 | done: | |
690 | if (ieee->set_security) | |
691 | ieee->set_security(ieee->dev, &sec); | |
692 | ||
693 | /* | |
694 | * Do not reset port if card is in Managed mode since resetting will | |
695 | * generate new IEEE 802.11 authentication which may end up in looping | |
696 | * with IEEE 802.1X. If your hardware requires a reset after WEP | |
697 | * configuration (for example... Prism2), implement the reset_port in | |
698 | * the callbacks structures used to initialize the 802.11 stack. | |
699 | */ | |
700 | if (ieee->reset_on_keychange && | |
701 | ieee->iw_mode != IW_MODE_INFRA && | |
702 | ieee->reset_port && ieee->reset_port(dev)) { | |
b0a4e7d8 | 703 | LIBIPW_DEBUG_WX("%s: reset_port failed\n", dev->name); |
e0d369d1 JK |
704 | return -EINVAL; |
705 | } | |
706 | ||
707 | return ret; | |
708 | } | |
709 | ||
b0a4e7d8 | 710 | int libipw_wx_get_encodeext(struct libipw_device *ieee, |
e0d369d1 JK |
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; | |
b0a4e7d8 | 716 | struct libipw_security *sec = &ieee->sec; |
e0d369d1 JK |
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 | |
274bfb8d | 729 | idx = ieee->crypt_info.tx_keyidx; |
e0d369d1 | 730 | |
f59d9782 | 731 | if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) && |
e189277a | 732 | ext->alg != IW_ENCODE_ALG_WEP) |
e0d369d1 JK |
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 | ||
b0a4e7d8 JL |
766 | EXPORT_SYMBOL(libipw_wx_set_encodeext); |
767 | EXPORT_SYMBOL(libipw_wx_get_encodeext); | |
e0d369d1 | 768 | |
b0a4e7d8 JL |
769 | EXPORT_SYMBOL(libipw_wx_get_scan); |
770 | EXPORT_SYMBOL(libipw_wx_set_encode); | |
771 | EXPORT_SYMBOL(libipw_wx_get_encode); |