1c891f3b9SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2367a1092SKalle Valo /******************************************************************************
3367a1092SKalle Valo
4367a1092SKalle Valo Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
5367a1092SKalle Valo
6367a1092SKalle Valo Portions of this file are based on the WEP enablement code provided by the
7367a1092SKalle Valo Host AP project hostap-drivers v0.1.3
8367a1092SKalle Valo Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9367a1092SKalle Valo <j@w1.fi>
10367a1092SKalle Valo Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
11367a1092SKalle Valo
12367a1092SKalle Valo
13367a1092SKalle Valo Contact Information:
14367a1092SKalle Valo Intel Linux Wireless <ilw@linux.intel.com>
15367a1092SKalle Valo Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
16367a1092SKalle Valo
17367a1092SKalle Valo ******************************************************************************/
18367a1092SKalle Valo
19367a1092SKalle Valo #include <linux/hardirq.h>
20367a1092SKalle Valo #include <linux/kmod.h>
21367a1092SKalle Valo #include <linux/slab.h>
22367a1092SKalle Valo #include <linux/module.h>
23367a1092SKalle Valo #include <linux/jiffies.h>
24367a1092SKalle Valo
25367a1092SKalle Valo #include <net/lib80211.h>
26367a1092SKalle Valo #include <linux/wireless.h>
27367a1092SKalle Valo
28367a1092SKalle Valo #include "libipw.h"
29367a1092SKalle Valo
30367a1092SKalle Valo static const char *libipw_modes[] = {
31367a1092SKalle Valo "?", "a", "b", "ab", "g", "ag", "bg", "abg"
32367a1092SKalle Valo };
33367a1092SKalle Valo
elapsed_jiffies_msecs(unsigned long start)34367a1092SKalle Valo static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
35367a1092SKalle Valo {
36367a1092SKalle Valo unsigned long end = jiffies;
37367a1092SKalle Valo
38367a1092SKalle Valo if (end >= start)
39367a1092SKalle Valo return jiffies_to_msecs(end - start);
40367a1092SKalle Valo
41367a1092SKalle Valo return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
42367a1092SKalle Valo }
43367a1092SKalle Valo
44367a1092SKalle Valo #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)45367a1092SKalle Valo static char *libipw_translate_scan(struct libipw_device *ieee,
46367a1092SKalle Valo char *start, char *stop,
47367a1092SKalle Valo struct libipw_network *network,
48367a1092SKalle Valo struct iw_request_info *info)
49367a1092SKalle Valo {
50367a1092SKalle Valo char custom[MAX_CUSTOM_LEN];
51367a1092SKalle Valo char *p;
52367a1092SKalle Valo struct iw_event iwe;
53367a1092SKalle Valo int i, j;
54367a1092SKalle Valo char *current_val; /* For rates */
55367a1092SKalle Valo u8 rate;
56367a1092SKalle Valo
57367a1092SKalle Valo /* First entry *MUST* be the AP MAC address */
58367a1092SKalle Valo iwe.cmd = SIOCGIWAP;
59367a1092SKalle Valo iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
60367a1092SKalle Valo memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
61367a1092SKalle Valo start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
62367a1092SKalle Valo
63367a1092SKalle Valo /* Remaining entries will be displayed in the order we provide them */
64367a1092SKalle Valo
65367a1092SKalle Valo /* Add the ESSID */
66367a1092SKalle Valo iwe.cmd = SIOCGIWESSID;
67367a1092SKalle Valo iwe.u.data.flags = 1;
68367a1092SKalle Valo iwe.u.data.length = min(network->ssid_len, (u8) 32);
69367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop,
70367a1092SKalle Valo &iwe, network->ssid);
71367a1092SKalle Valo
72367a1092SKalle Valo /* Add the protocol name */
73367a1092SKalle Valo iwe.cmd = SIOCGIWNAME;
74367a1092SKalle Valo snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
75367a1092SKalle Valo libipw_modes[network->mode]);
76367a1092SKalle Valo start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
77367a1092SKalle Valo
78367a1092SKalle Valo /* Add mode */
79367a1092SKalle Valo iwe.cmd = SIOCGIWMODE;
80367a1092SKalle Valo if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
81367a1092SKalle Valo if (network->capability & WLAN_CAPABILITY_ESS)
82367a1092SKalle Valo iwe.u.mode = IW_MODE_MASTER;
83367a1092SKalle Valo else
84367a1092SKalle Valo iwe.u.mode = IW_MODE_ADHOC;
85367a1092SKalle Valo
86367a1092SKalle Valo start = iwe_stream_add_event(info, start, stop,
87367a1092SKalle Valo &iwe, IW_EV_UINT_LEN);
88367a1092SKalle Valo }
89367a1092SKalle Valo
90367a1092SKalle Valo /* Add channel and frequency */
91367a1092SKalle Valo /* Note : userspace automatically computes channel using iwrange */
92367a1092SKalle Valo iwe.cmd = SIOCGIWFREQ;
93367a1092SKalle Valo iwe.u.freq.m = libipw_channel_to_freq(ieee, network->channel);
94367a1092SKalle Valo iwe.u.freq.e = 6;
95367a1092SKalle Valo iwe.u.freq.i = 0;
96367a1092SKalle Valo start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
97367a1092SKalle Valo
98367a1092SKalle Valo /* Add encryption capability */
99367a1092SKalle Valo iwe.cmd = SIOCGIWENCODE;
100367a1092SKalle Valo if (network->capability & WLAN_CAPABILITY_PRIVACY)
101367a1092SKalle Valo iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
102367a1092SKalle Valo else
103367a1092SKalle Valo iwe.u.data.flags = IW_ENCODE_DISABLED;
104367a1092SKalle Valo iwe.u.data.length = 0;
105367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop,
106367a1092SKalle Valo &iwe, network->ssid);
107367a1092SKalle Valo
108367a1092SKalle Valo /* Add basic and extended rates */
109367a1092SKalle Valo /* Rate : stuffing multiple values in a single event require a bit
110367a1092SKalle Valo * more of magic - Jean II */
111367a1092SKalle Valo current_val = start + iwe_stream_lcp_len(info);
112367a1092SKalle Valo iwe.cmd = SIOCGIWRATE;
113367a1092SKalle Valo /* Those two flags are ignored... */
114367a1092SKalle Valo iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
115367a1092SKalle Valo
116367a1092SKalle Valo for (i = 0, j = 0; i < network->rates_len;) {
117367a1092SKalle Valo if (j < network->rates_ex_len &&
118367a1092SKalle Valo ((network->rates_ex[j] & 0x7F) <
119367a1092SKalle Valo (network->rates[i] & 0x7F)))
120367a1092SKalle Valo rate = network->rates_ex[j++] & 0x7F;
121367a1092SKalle Valo else
122367a1092SKalle Valo rate = network->rates[i++] & 0x7F;
123367a1092SKalle Valo /* Bit rate given in 500 kb/s units (+ 0x80) */
124367a1092SKalle Valo iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
125367a1092SKalle Valo /* Add new value to event */
126367a1092SKalle Valo current_val = iwe_stream_add_value(info, start, current_val,
127367a1092SKalle Valo stop, &iwe, IW_EV_PARAM_LEN);
128367a1092SKalle Valo }
129367a1092SKalle Valo for (; j < network->rates_ex_len; j++) {
130367a1092SKalle Valo rate = network->rates_ex[j] & 0x7F;
131367a1092SKalle Valo /* Bit rate given in 500 kb/s units (+ 0x80) */
132367a1092SKalle Valo iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
133367a1092SKalle Valo /* Add new value to event */
134367a1092SKalle Valo current_val = iwe_stream_add_value(info, start, current_val,
135367a1092SKalle Valo stop, &iwe, IW_EV_PARAM_LEN);
136367a1092SKalle Valo }
137367a1092SKalle Valo /* Check if we added any rate */
138367a1092SKalle Valo if ((current_val - start) > iwe_stream_lcp_len(info))
139367a1092SKalle Valo start = current_val;
140367a1092SKalle Valo
141367a1092SKalle Valo /* Add quality statistics */
142367a1092SKalle Valo iwe.cmd = IWEVQUAL;
143367a1092SKalle Valo iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
144367a1092SKalle Valo IW_QUAL_NOISE_UPDATED;
145367a1092SKalle Valo
146367a1092SKalle Valo if (!(network->stats.mask & LIBIPW_STATMASK_RSSI)) {
147367a1092SKalle Valo iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
148367a1092SKalle Valo IW_QUAL_LEVEL_INVALID;
149367a1092SKalle Valo iwe.u.qual.qual = 0;
150367a1092SKalle Valo } else {
151367a1092SKalle Valo if (ieee->perfect_rssi == ieee->worst_rssi)
152367a1092SKalle Valo iwe.u.qual.qual = 100;
153367a1092SKalle Valo else
154367a1092SKalle Valo iwe.u.qual.qual =
155367a1092SKalle Valo (100 *
156367a1092SKalle Valo (ieee->perfect_rssi - ieee->worst_rssi) *
157367a1092SKalle Valo (ieee->perfect_rssi - ieee->worst_rssi) -
158367a1092SKalle Valo (ieee->perfect_rssi - network->stats.rssi) *
159367a1092SKalle Valo (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
160367a1092SKalle Valo 62 * (ieee->perfect_rssi -
161367a1092SKalle Valo network->stats.rssi))) /
162367a1092SKalle Valo ((ieee->perfect_rssi -
163367a1092SKalle Valo ieee->worst_rssi) * (ieee->perfect_rssi -
164367a1092SKalle Valo ieee->worst_rssi));
165367a1092SKalle Valo if (iwe.u.qual.qual > 100)
166367a1092SKalle Valo iwe.u.qual.qual = 100;
167367a1092SKalle Valo else if (iwe.u.qual.qual < 1)
168367a1092SKalle Valo iwe.u.qual.qual = 0;
169367a1092SKalle Valo }
170367a1092SKalle Valo
171367a1092SKalle Valo if (!(network->stats.mask & LIBIPW_STATMASK_NOISE)) {
172367a1092SKalle Valo iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
173367a1092SKalle Valo iwe.u.qual.noise = 0;
174367a1092SKalle Valo } else {
175367a1092SKalle Valo iwe.u.qual.noise = network->stats.noise;
176367a1092SKalle Valo }
177367a1092SKalle Valo
178367a1092SKalle Valo if (!(network->stats.mask & LIBIPW_STATMASK_SIGNAL)) {
179367a1092SKalle Valo iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
180367a1092SKalle Valo iwe.u.qual.level = 0;
181367a1092SKalle Valo } else {
182367a1092SKalle Valo iwe.u.qual.level = network->stats.signal;
183367a1092SKalle Valo }
184367a1092SKalle Valo
185367a1092SKalle Valo start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
186367a1092SKalle Valo
187367a1092SKalle Valo iwe.cmd = IWEVCUSTOM;
188367a1092SKalle Valo p = custom;
189367a1092SKalle Valo
190367a1092SKalle Valo iwe.u.data.length = p - custom;
191367a1092SKalle Valo if (iwe.u.data.length)
192367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop, &iwe, custom);
193367a1092SKalle Valo
194367a1092SKalle Valo memset(&iwe, 0, sizeof(iwe));
195367a1092SKalle Valo if (network->wpa_ie_len) {
196367a1092SKalle Valo char buf[MAX_WPA_IE_LEN];
197367a1092SKalle Valo memcpy(buf, network->wpa_ie, network->wpa_ie_len);
198367a1092SKalle Valo iwe.cmd = IWEVGENIE;
199367a1092SKalle Valo iwe.u.data.length = network->wpa_ie_len;
200367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop, &iwe, buf);
201367a1092SKalle Valo }
202367a1092SKalle Valo
203367a1092SKalle Valo memset(&iwe, 0, sizeof(iwe));
204367a1092SKalle Valo if (network->rsn_ie_len) {
205367a1092SKalle Valo char buf[MAX_WPA_IE_LEN];
206367a1092SKalle Valo memcpy(buf, network->rsn_ie, network->rsn_ie_len);
207367a1092SKalle Valo iwe.cmd = IWEVGENIE;
208367a1092SKalle Valo iwe.u.data.length = network->rsn_ie_len;
209367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop, &iwe, buf);
210367a1092SKalle Valo }
211367a1092SKalle Valo
212367a1092SKalle Valo /* Add EXTRA: Age to display seconds since last beacon/probe response
213367a1092SKalle Valo * for given network. */
214367a1092SKalle Valo iwe.cmd = IWEVCUSTOM;
215367a1092SKalle Valo p = custom;
216f35ba45cSTakashi Iwai p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
217367a1092SKalle Valo " Last beacon: %ums ago",
218367a1092SKalle Valo elapsed_jiffies_msecs(network->last_scanned));
219367a1092SKalle Valo iwe.u.data.length = p - custom;
220367a1092SKalle Valo if (iwe.u.data.length)
221367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop, &iwe, custom);
222367a1092SKalle Valo
223367a1092SKalle Valo /* Add spectrum management information */
224367a1092SKalle Valo iwe.cmd = -1;
225367a1092SKalle Valo p = custom;
226f35ba45cSTakashi Iwai p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
227367a1092SKalle Valo
228367a1092SKalle Valo if (libipw_get_channel_flags(ieee, network->channel) &
229367a1092SKalle Valo LIBIPW_CH_INVALID) {
230367a1092SKalle Valo iwe.cmd = IWEVCUSTOM;
231f35ba45cSTakashi Iwai p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
232367a1092SKalle Valo }
233367a1092SKalle Valo
234367a1092SKalle Valo if (libipw_get_channel_flags(ieee, network->channel) &
235367a1092SKalle Valo LIBIPW_CH_RADAR_DETECT) {
236367a1092SKalle Valo iwe.cmd = IWEVCUSTOM;
237f35ba45cSTakashi Iwai p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
238367a1092SKalle Valo }
239367a1092SKalle Valo
240367a1092SKalle Valo if (iwe.cmd == IWEVCUSTOM) {
241367a1092SKalle Valo iwe.u.data.length = p - custom;
242367a1092SKalle Valo start = iwe_stream_add_point(info, start, stop, &iwe, custom);
243367a1092SKalle Valo }
244367a1092SKalle Valo
245367a1092SKalle Valo return start;
246367a1092SKalle Valo }
247367a1092SKalle Valo
248367a1092SKalle Valo #define SCAN_ITEM_SIZE 128
249367a1092SKalle Valo
libipw_wx_get_scan(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)250367a1092SKalle Valo int libipw_wx_get_scan(struct libipw_device *ieee,
251367a1092SKalle Valo struct iw_request_info *info,
252367a1092SKalle Valo union iwreq_data *wrqu, char *extra)
253367a1092SKalle Valo {
254367a1092SKalle Valo struct libipw_network *network;
255367a1092SKalle Valo unsigned long flags;
256367a1092SKalle Valo int err = 0;
257367a1092SKalle Valo
258367a1092SKalle Valo char *ev = extra;
259367a1092SKalle Valo char *stop = ev + wrqu->data.length;
260367a1092SKalle Valo int i = 0;
261367a1092SKalle Valo
262367a1092SKalle Valo LIBIPW_DEBUG_WX("Getting scan\n");
263367a1092SKalle Valo
264367a1092SKalle Valo spin_lock_irqsave(&ieee->lock, flags);
265367a1092SKalle Valo
266367a1092SKalle Valo list_for_each_entry(network, &ieee->network_list, list) {
267367a1092SKalle Valo i++;
268367a1092SKalle Valo if (stop - ev < SCAN_ITEM_SIZE) {
269367a1092SKalle Valo err = -E2BIG;
270367a1092SKalle Valo break;
271367a1092SKalle Valo }
272367a1092SKalle Valo
273367a1092SKalle Valo if (ieee->scan_age == 0 ||
274367a1092SKalle Valo time_after(network->last_scanned + ieee->scan_age, jiffies))
275367a1092SKalle Valo ev = libipw_translate_scan(ieee, ev, stop, network,
276367a1092SKalle Valo info);
277367a1092SKalle Valo else {
278367a1092SKalle Valo LIBIPW_DEBUG_SCAN("Not showing network '%*pE (%pM)' due to age (%ums).\n",
279367a1092SKalle Valo network->ssid_len, network->ssid,
280367a1092SKalle Valo network->bssid,
281367a1092SKalle Valo elapsed_jiffies_msecs(
282367a1092SKalle Valo network->last_scanned));
283367a1092SKalle Valo }
284367a1092SKalle Valo }
285367a1092SKalle Valo
286367a1092SKalle Valo spin_unlock_irqrestore(&ieee->lock, flags);
287367a1092SKalle Valo
288367a1092SKalle Valo wrqu->data.length = ev - extra;
289367a1092SKalle Valo wrqu->data.flags = 0;
290367a1092SKalle Valo
291367a1092SKalle Valo LIBIPW_DEBUG_WX("exit: %d networks returned.\n", i);
292367a1092SKalle Valo
293367a1092SKalle Valo return err;
294367a1092SKalle Valo }
295367a1092SKalle Valo
libipw_wx_set_encode(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * keybuf)296367a1092SKalle Valo int libipw_wx_set_encode(struct libipw_device *ieee,
297367a1092SKalle Valo struct iw_request_info *info,
298367a1092SKalle Valo union iwreq_data *wrqu, char *keybuf)
299367a1092SKalle Valo {
300367a1092SKalle Valo struct iw_point *erq = &(wrqu->encoding);
301367a1092SKalle Valo struct net_device *dev = ieee->dev;
302367a1092SKalle Valo struct libipw_security sec = {
303367a1092SKalle Valo .flags = 0
304367a1092SKalle Valo };
305367a1092SKalle Valo int i, key, key_provided, len;
306367a1092SKalle Valo struct lib80211_crypt_data **crypt;
307367a1092SKalle Valo int host_crypto = ieee->host_encrypt || ieee->host_decrypt;
308367a1092SKalle Valo
309367a1092SKalle Valo LIBIPW_DEBUG_WX("SET_ENCODE\n");
310367a1092SKalle Valo
311367a1092SKalle Valo key = erq->flags & IW_ENCODE_INDEX;
312367a1092SKalle Valo if (key) {
313367a1092SKalle Valo if (key > WEP_KEYS)
314367a1092SKalle Valo return -EINVAL;
315367a1092SKalle Valo key--;
316367a1092SKalle Valo key_provided = 1;
317367a1092SKalle Valo } else {
318367a1092SKalle Valo key_provided = 0;
319367a1092SKalle Valo key = ieee->crypt_info.tx_keyidx;
320367a1092SKalle Valo }
321367a1092SKalle Valo
322367a1092SKalle Valo LIBIPW_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
323367a1092SKalle Valo "provided" : "default");
324367a1092SKalle Valo
325367a1092SKalle Valo crypt = &ieee->crypt_info.crypt[key];
326367a1092SKalle Valo
327367a1092SKalle Valo if (erq->flags & IW_ENCODE_DISABLED) {
328367a1092SKalle Valo if (key_provided && *crypt) {
329367a1092SKalle Valo LIBIPW_DEBUG_WX("Disabling encryption on key %d.\n",
330367a1092SKalle Valo key);
331367a1092SKalle Valo lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
332367a1092SKalle Valo } else
333367a1092SKalle Valo LIBIPW_DEBUG_WX("Disabling encryption.\n");
334367a1092SKalle Valo
335367a1092SKalle Valo /* Check all the keys to see if any are still configured,
336367a1092SKalle Valo * and if no key index was provided, de-init them all */
337367a1092SKalle Valo for (i = 0; i < WEP_KEYS; i++) {
338367a1092SKalle Valo if (ieee->crypt_info.crypt[i] != NULL) {
339367a1092SKalle Valo if (key_provided)
340367a1092SKalle Valo break;
341367a1092SKalle Valo lib80211_crypt_delayed_deinit(&ieee->crypt_info,
342367a1092SKalle Valo &ieee->crypt_info.crypt[i]);
343367a1092SKalle Valo }
344367a1092SKalle Valo }
345367a1092SKalle Valo
346367a1092SKalle Valo if (i == WEP_KEYS) {
347367a1092SKalle Valo sec.enabled = 0;
348367a1092SKalle Valo sec.encrypt = 0;
349367a1092SKalle Valo sec.level = SEC_LEVEL_0;
350367a1092SKalle Valo sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
351367a1092SKalle Valo }
352367a1092SKalle Valo
353367a1092SKalle Valo goto done;
354367a1092SKalle Valo }
355367a1092SKalle Valo
356367a1092SKalle Valo sec.enabled = 1;
357367a1092SKalle Valo sec.encrypt = 1;
358367a1092SKalle Valo sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
359367a1092SKalle Valo
360367a1092SKalle Valo if (*crypt != NULL && (*crypt)->ops != NULL &&
361367a1092SKalle Valo strcmp((*crypt)->ops->name, "WEP") != 0) {
362367a1092SKalle Valo /* changing to use WEP; deinit previously used algorithm
363367a1092SKalle Valo * on this key */
364367a1092SKalle Valo lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
365367a1092SKalle Valo }
366367a1092SKalle Valo
367367a1092SKalle Valo if (*crypt == NULL && host_crypto) {
368367a1092SKalle Valo struct lib80211_crypt_data *new_crypt;
369367a1092SKalle Valo
370367a1092SKalle Valo /* take WEP into use */
371367a1092SKalle Valo new_crypt = kzalloc(sizeof(struct lib80211_crypt_data),
372367a1092SKalle Valo GFP_KERNEL);
373367a1092SKalle Valo if (new_crypt == NULL)
374367a1092SKalle Valo return -ENOMEM;
375367a1092SKalle Valo new_crypt->ops = lib80211_get_crypto_ops("WEP");
376367a1092SKalle Valo if (!new_crypt->ops) {
377367a1092SKalle Valo request_module("lib80211_crypt_wep");
378367a1092SKalle Valo new_crypt->ops = lib80211_get_crypto_ops("WEP");
379367a1092SKalle Valo }
380367a1092SKalle Valo
381367a1092SKalle Valo if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
382367a1092SKalle Valo new_crypt->priv = new_crypt->ops->init(key);
383367a1092SKalle Valo
384367a1092SKalle Valo if (!new_crypt->ops || !new_crypt->priv) {
385367a1092SKalle Valo kfree(new_crypt);
386367a1092SKalle Valo new_crypt = NULL;
387367a1092SKalle Valo
388367a1092SKalle Valo printk(KERN_WARNING "%s: could not initialize WEP: "
389367a1092SKalle Valo "load module lib80211_crypt_wep\n", dev->name);
390367a1092SKalle Valo return -EOPNOTSUPP;
391367a1092SKalle Valo }
392367a1092SKalle Valo *crypt = new_crypt;
393367a1092SKalle Valo }
394367a1092SKalle Valo
395367a1092SKalle Valo /* If a new key was provided, set it up */
396367a1092SKalle Valo if (erq->length > 0) {
397367a1092SKalle Valo len = erq->length <= 5 ? 5 : 13;
398367a1092SKalle Valo memcpy(sec.keys[key], keybuf, erq->length);
399367a1092SKalle Valo if (len > erq->length)
400367a1092SKalle Valo memset(sec.keys[key] + erq->length, 0,
401367a1092SKalle Valo len - erq->length);
402367a1092SKalle Valo LIBIPW_DEBUG_WX("Setting key %d to '%*pE' (%d:%d bytes)\n",
403367a1092SKalle Valo key, len, sec.keys[key],
404367a1092SKalle Valo erq->length, len);
405367a1092SKalle Valo sec.key_sizes[key] = len;
406367a1092SKalle Valo if (*crypt)
407367a1092SKalle Valo (*crypt)->ops->set_key(sec.keys[key], len, NULL,
408367a1092SKalle Valo (*crypt)->priv);
409367a1092SKalle Valo sec.flags |= (1 << key);
410367a1092SKalle Valo /* This ensures a key will be activated if no key is
411367a1092SKalle Valo * explicitly set */
412367a1092SKalle Valo if (key == sec.active_key)
413367a1092SKalle Valo sec.flags |= SEC_ACTIVE_KEY;
414367a1092SKalle Valo
415367a1092SKalle Valo } else {
416367a1092SKalle Valo if (host_crypto) {
417367a1092SKalle Valo len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
418367a1092SKalle Valo NULL, (*crypt)->priv);
419367a1092SKalle Valo if (len == 0) {
420367a1092SKalle Valo /* Set a default key of all 0 */
421367a1092SKalle Valo LIBIPW_DEBUG_WX("Setting key %d to all "
422367a1092SKalle Valo "zero.\n", key);
423367a1092SKalle Valo memset(sec.keys[key], 0, 13);
424367a1092SKalle Valo (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
425367a1092SKalle Valo (*crypt)->priv);
426367a1092SKalle Valo sec.key_sizes[key] = 13;
427367a1092SKalle Valo sec.flags |= (1 << key);
428367a1092SKalle Valo }
429367a1092SKalle Valo }
430367a1092SKalle Valo /* No key data - just set the default TX key index */
431367a1092SKalle Valo if (key_provided) {
432367a1092SKalle Valo LIBIPW_DEBUG_WX("Setting key %d to default Tx "
433367a1092SKalle Valo "key.\n", key);
434367a1092SKalle Valo ieee->crypt_info.tx_keyidx = key;
435367a1092SKalle Valo sec.active_key = key;
436367a1092SKalle Valo sec.flags |= SEC_ACTIVE_KEY;
437367a1092SKalle Valo }
438367a1092SKalle Valo }
439367a1092SKalle Valo if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
440367a1092SKalle Valo ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
441367a1092SKalle Valo sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
442367a1092SKalle Valo WLAN_AUTH_SHARED_KEY;
443367a1092SKalle Valo sec.flags |= SEC_AUTH_MODE;
444367a1092SKalle Valo LIBIPW_DEBUG_WX("Auth: %s\n",
445367a1092SKalle Valo sec.auth_mode == WLAN_AUTH_OPEN ?
446367a1092SKalle Valo "OPEN" : "SHARED KEY");
447367a1092SKalle Valo }
448367a1092SKalle Valo
449367a1092SKalle Valo /* For now we just support WEP, so only set that security level...
450367a1092SKalle Valo * TODO: When WPA is added this is one place that needs to change */
451367a1092SKalle Valo sec.flags |= SEC_LEVEL;
452367a1092SKalle Valo sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
453367a1092SKalle Valo sec.encode_alg[key] = SEC_ALG_WEP;
454367a1092SKalle Valo
455367a1092SKalle Valo done:
456367a1092SKalle Valo if (ieee->set_security)
457367a1092SKalle Valo ieee->set_security(dev, &sec);
458367a1092SKalle Valo
459367a1092SKalle Valo return 0;
460367a1092SKalle Valo }
461367a1092SKalle Valo
libipw_wx_get_encode(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * keybuf)462367a1092SKalle Valo int libipw_wx_get_encode(struct libipw_device *ieee,
463367a1092SKalle Valo struct iw_request_info *info,
464367a1092SKalle Valo union iwreq_data *wrqu, char *keybuf)
465367a1092SKalle Valo {
466367a1092SKalle Valo struct iw_point *erq = &(wrqu->encoding);
467367a1092SKalle Valo int len, key;
468367a1092SKalle Valo struct libipw_security *sec = &ieee->sec;
469367a1092SKalle Valo
470367a1092SKalle Valo LIBIPW_DEBUG_WX("GET_ENCODE\n");
471367a1092SKalle Valo
472367a1092SKalle Valo key = erq->flags & IW_ENCODE_INDEX;
473367a1092SKalle Valo if (key) {
474367a1092SKalle Valo if (key > WEP_KEYS)
475367a1092SKalle Valo return -EINVAL;
476367a1092SKalle Valo key--;
477367a1092SKalle Valo } else
478367a1092SKalle Valo key = ieee->crypt_info.tx_keyidx;
479367a1092SKalle Valo
480367a1092SKalle Valo erq->flags = key + 1;
481367a1092SKalle Valo
482367a1092SKalle Valo if (!sec->enabled) {
483367a1092SKalle Valo erq->length = 0;
484367a1092SKalle Valo erq->flags |= IW_ENCODE_DISABLED;
485367a1092SKalle Valo return 0;
486367a1092SKalle Valo }
487367a1092SKalle Valo
488367a1092SKalle Valo len = sec->key_sizes[key];
489367a1092SKalle Valo memcpy(keybuf, sec->keys[key], len);
490367a1092SKalle Valo
491367a1092SKalle Valo erq->length = len;
492367a1092SKalle Valo erq->flags |= IW_ENCODE_ENABLED;
493367a1092SKalle Valo
494367a1092SKalle Valo if (ieee->open_wep)
495367a1092SKalle Valo erq->flags |= IW_ENCODE_OPEN;
496367a1092SKalle Valo else
497367a1092SKalle Valo erq->flags |= IW_ENCODE_RESTRICTED;
498367a1092SKalle Valo
499367a1092SKalle Valo return 0;
500367a1092SKalle Valo }
501367a1092SKalle Valo
libipw_wx_set_encodeext(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)502367a1092SKalle Valo int libipw_wx_set_encodeext(struct libipw_device *ieee,
503367a1092SKalle Valo struct iw_request_info *info,
504367a1092SKalle Valo union iwreq_data *wrqu, char *extra)
505367a1092SKalle Valo {
506367a1092SKalle Valo struct net_device *dev = ieee->dev;
507367a1092SKalle Valo struct iw_point *encoding = &wrqu->encoding;
508367a1092SKalle Valo struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
509367a1092SKalle Valo int i, idx, ret = 0;
510367a1092SKalle Valo int group_key = 0;
511367a1092SKalle Valo const char *alg, *module;
512367a1092SKalle Valo struct lib80211_crypto_ops *ops;
513367a1092SKalle Valo struct lib80211_crypt_data **crypt;
514367a1092SKalle Valo
515367a1092SKalle Valo struct libipw_security sec = {
516367a1092SKalle Valo .flags = 0,
517367a1092SKalle Valo };
518367a1092SKalle Valo
519367a1092SKalle Valo idx = encoding->flags & IW_ENCODE_INDEX;
520367a1092SKalle Valo if (idx) {
521367a1092SKalle Valo if (idx < 1 || idx > WEP_KEYS)
522367a1092SKalle Valo return -EINVAL;
523367a1092SKalle Valo idx--;
524367a1092SKalle Valo } else
525367a1092SKalle Valo idx = ieee->crypt_info.tx_keyidx;
526367a1092SKalle Valo
527367a1092SKalle Valo if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
528367a1092SKalle Valo crypt = &ieee->crypt_info.crypt[idx];
529367a1092SKalle Valo group_key = 1;
530367a1092SKalle Valo } else {
531367a1092SKalle Valo /* some Cisco APs use idx>0 for unicast in dynamic WEP */
532367a1092SKalle Valo if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
533367a1092SKalle Valo return -EINVAL;
534367a1092SKalle Valo if (ieee->iw_mode == IW_MODE_INFRA)
535367a1092SKalle Valo crypt = &ieee->crypt_info.crypt[idx];
536367a1092SKalle Valo else
537367a1092SKalle Valo return -EINVAL;
538367a1092SKalle Valo }
539367a1092SKalle Valo
540367a1092SKalle Valo sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
541367a1092SKalle Valo if ((encoding->flags & IW_ENCODE_DISABLED) ||
542367a1092SKalle Valo ext->alg == IW_ENCODE_ALG_NONE) {
543367a1092SKalle Valo if (*crypt)
544367a1092SKalle Valo lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
545367a1092SKalle Valo
546367a1092SKalle Valo for (i = 0; i < WEP_KEYS; i++)
547367a1092SKalle Valo if (ieee->crypt_info.crypt[i] != NULL)
548367a1092SKalle Valo break;
549367a1092SKalle Valo
550367a1092SKalle Valo if (i == WEP_KEYS) {
551367a1092SKalle Valo sec.enabled = 0;
552367a1092SKalle Valo sec.encrypt = 0;
553367a1092SKalle Valo sec.level = SEC_LEVEL_0;
554367a1092SKalle Valo sec.flags |= SEC_LEVEL;
555367a1092SKalle Valo }
556367a1092SKalle Valo goto done;
557367a1092SKalle Valo }
558367a1092SKalle Valo
559367a1092SKalle Valo sec.enabled = 1;
560367a1092SKalle Valo sec.encrypt = 1;
561367a1092SKalle Valo
562367a1092SKalle Valo if (group_key ? !ieee->host_mc_decrypt :
563367a1092SKalle Valo !(ieee->host_encrypt || ieee->host_decrypt ||
564367a1092SKalle Valo ieee->host_encrypt_msdu))
565367a1092SKalle Valo goto skip_host_crypt;
566367a1092SKalle Valo
567367a1092SKalle Valo switch (ext->alg) {
568367a1092SKalle Valo case IW_ENCODE_ALG_WEP:
569367a1092SKalle Valo alg = "WEP";
570367a1092SKalle Valo module = "lib80211_crypt_wep";
571367a1092SKalle Valo break;
572367a1092SKalle Valo case IW_ENCODE_ALG_TKIP:
573367a1092SKalle Valo alg = "TKIP";
574367a1092SKalle Valo module = "lib80211_crypt_tkip";
575367a1092SKalle Valo break;
576367a1092SKalle Valo case IW_ENCODE_ALG_CCMP:
577367a1092SKalle Valo alg = "CCMP";
578367a1092SKalle Valo module = "lib80211_crypt_ccmp";
579367a1092SKalle Valo break;
580367a1092SKalle Valo default:
581367a1092SKalle Valo LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
582367a1092SKalle Valo dev->name, ext->alg);
583367a1092SKalle Valo ret = -EINVAL;
584367a1092SKalle Valo goto done;
585367a1092SKalle Valo }
586367a1092SKalle Valo
587367a1092SKalle Valo ops = lib80211_get_crypto_ops(alg);
588367a1092SKalle Valo if (ops == NULL) {
589367a1092SKalle Valo request_module(module);
590367a1092SKalle Valo ops = lib80211_get_crypto_ops(alg);
591367a1092SKalle Valo }
592367a1092SKalle Valo if (ops == NULL) {
593367a1092SKalle Valo LIBIPW_DEBUG_WX("%s: unknown crypto alg %d\n",
594367a1092SKalle Valo dev->name, ext->alg);
595367a1092SKalle Valo ret = -EINVAL;
596367a1092SKalle Valo goto done;
597367a1092SKalle Valo }
598367a1092SKalle Valo
599367a1092SKalle Valo if (*crypt == NULL || (*crypt)->ops != ops) {
600367a1092SKalle Valo struct lib80211_crypt_data *new_crypt;
601367a1092SKalle Valo
602367a1092SKalle Valo lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
603367a1092SKalle Valo
604367a1092SKalle Valo new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
605367a1092SKalle Valo if (new_crypt == NULL) {
606367a1092SKalle Valo ret = -ENOMEM;
607367a1092SKalle Valo goto done;
608367a1092SKalle Valo }
609367a1092SKalle Valo new_crypt->ops = ops;
610367a1092SKalle Valo if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
611367a1092SKalle Valo new_crypt->priv = new_crypt->ops->init(idx);
612367a1092SKalle Valo if (new_crypt->priv == NULL) {
613367a1092SKalle Valo kfree(new_crypt);
614367a1092SKalle Valo ret = -EINVAL;
615367a1092SKalle Valo goto done;
616367a1092SKalle Valo }
617367a1092SKalle Valo *crypt = new_crypt;
618367a1092SKalle Valo }
619367a1092SKalle Valo
620367a1092SKalle Valo if (ext->key_len > 0 && (*crypt)->ops->set_key &&
621367a1092SKalle Valo (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
622367a1092SKalle Valo (*crypt)->priv) < 0) {
623367a1092SKalle Valo LIBIPW_DEBUG_WX("%s: key setting failed\n", dev->name);
624367a1092SKalle Valo ret = -EINVAL;
625367a1092SKalle Valo goto done;
626367a1092SKalle Valo }
627367a1092SKalle Valo
628367a1092SKalle Valo skip_host_crypt:
629367a1092SKalle Valo if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
630367a1092SKalle Valo ieee->crypt_info.tx_keyidx = idx;
631367a1092SKalle Valo sec.active_key = idx;
632367a1092SKalle Valo sec.flags |= SEC_ACTIVE_KEY;
633367a1092SKalle Valo }
634367a1092SKalle Valo
635367a1092SKalle Valo if (ext->alg != IW_ENCODE_ALG_NONE) {
636*260a9ad9SDan Carpenter int key_len = clamp_val(ext->key_len, 0, SCM_KEY_LEN);
637*260a9ad9SDan Carpenter
638*260a9ad9SDan Carpenter memcpy(sec.keys[idx], ext->key, key_len);
639*260a9ad9SDan Carpenter sec.key_sizes[idx] = key_len;
640367a1092SKalle Valo sec.flags |= (1 << idx);
641367a1092SKalle Valo if (ext->alg == IW_ENCODE_ALG_WEP) {
642367a1092SKalle Valo sec.encode_alg[idx] = SEC_ALG_WEP;
643367a1092SKalle Valo sec.flags |= SEC_LEVEL;
644367a1092SKalle Valo sec.level = SEC_LEVEL_1;
645367a1092SKalle Valo } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
646367a1092SKalle Valo sec.encode_alg[idx] = SEC_ALG_TKIP;
647367a1092SKalle Valo sec.flags |= SEC_LEVEL;
648367a1092SKalle Valo sec.level = SEC_LEVEL_2;
649367a1092SKalle Valo } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
650367a1092SKalle Valo sec.encode_alg[idx] = SEC_ALG_CCMP;
651367a1092SKalle Valo sec.flags |= SEC_LEVEL;
652367a1092SKalle Valo sec.level = SEC_LEVEL_3;
653367a1092SKalle Valo }
654367a1092SKalle Valo /* Don't set sec level for group keys. */
655367a1092SKalle Valo if (group_key)
656367a1092SKalle Valo sec.flags &= ~SEC_LEVEL;
657367a1092SKalle Valo }
658367a1092SKalle Valo done:
659367a1092SKalle Valo if (ieee->set_security)
660367a1092SKalle Valo ieee->set_security(dev, &sec);
661367a1092SKalle Valo
662367a1092SKalle Valo return ret;
663367a1092SKalle Valo }
664367a1092SKalle Valo
libipw_wx_get_encodeext(struct libipw_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)665367a1092SKalle Valo int libipw_wx_get_encodeext(struct libipw_device *ieee,
666367a1092SKalle Valo struct iw_request_info *info,
667367a1092SKalle Valo union iwreq_data *wrqu, char *extra)
668367a1092SKalle Valo {
669367a1092SKalle Valo struct iw_point *encoding = &wrqu->encoding;
670367a1092SKalle Valo struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
671367a1092SKalle Valo struct libipw_security *sec = &ieee->sec;
672367a1092SKalle Valo int idx, max_key_len;
673367a1092SKalle Valo
674367a1092SKalle Valo max_key_len = encoding->length - sizeof(*ext);
675367a1092SKalle Valo if (max_key_len < 0)
676367a1092SKalle Valo return -EINVAL;
677367a1092SKalle Valo
678367a1092SKalle Valo idx = encoding->flags & IW_ENCODE_INDEX;
679367a1092SKalle Valo if (idx) {
680367a1092SKalle Valo if (idx < 1 || idx > WEP_KEYS)
681367a1092SKalle Valo return -EINVAL;
682367a1092SKalle Valo idx--;
683367a1092SKalle Valo } else
684367a1092SKalle Valo idx = ieee->crypt_info.tx_keyidx;
685367a1092SKalle Valo
686367a1092SKalle Valo if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
687367a1092SKalle Valo ext->alg != IW_ENCODE_ALG_WEP)
688367a1092SKalle Valo if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
689367a1092SKalle Valo return -EINVAL;
690367a1092SKalle Valo
691367a1092SKalle Valo encoding->flags = idx + 1;
692367a1092SKalle Valo memset(ext, 0, sizeof(*ext));
693367a1092SKalle Valo
694367a1092SKalle Valo if (!sec->enabled) {
695367a1092SKalle Valo ext->alg = IW_ENCODE_ALG_NONE;
696367a1092SKalle Valo ext->key_len = 0;
697367a1092SKalle Valo encoding->flags |= IW_ENCODE_DISABLED;
698367a1092SKalle Valo } else {
699367a1092SKalle Valo if (sec->encode_alg[idx] == SEC_ALG_WEP)
700367a1092SKalle Valo ext->alg = IW_ENCODE_ALG_WEP;
701367a1092SKalle Valo else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
702367a1092SKalle Valo ext->alg = IW_ENCODE_ALG_TKIP;
703367a1092SKalle Valo else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
704367a1092SKalle Valo ext->alg = IW_ENCODE_ALG_CCMP;
705367a1092SKalle Valo else
706367a1092SKalle Valo return -EINVAL;
707367a1092SKalle Valo
708367a1092SKalle Valo ext->key_len = sec->key_sizes[idx];
709367a1092SKalle Valo memcpy(ext->key, sec->keys[idx], ext->key_len);
710367a1092SKalle Valo encoding->flags |= IW_ENCODE_ENABLED;
711367a1092SKalle Valo if (ext->key_len &&
712367a1092SKalle Valo (ext->alg == IW_ENCODE_ALG_TKIP ||
713367a1092SKalle Valo ext->alg == IW_ENCODE_ALG_CCMP))
714367a1092SKalle Valo ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
715367a1092SKalle Valo
716367a1092SKalle Valo }
717367a1092SKalle Valo
718367a1092SKalle Valo return 0;
719367a1092SKalle Valo }
720367a1092SKalle Valo
721367a1092SKalle Valo EXPORT_SYMBOL(libipw_wx_set_encodeext);
722367a1092SKalle Valo EXPORT_SYMBOL(libipw_wx_get_encodeext);
723367a1092SKalle Valo
724367a1092SKalle Valo EXPORT_SYMBOL(libipw_wx_get_scan);
725367a1092SKalle Valo EXPORT_SYMBOL(libipw_wx_set_encode);
726367a1092SKalle Valo EXPORT_SYMBOL(libipw_wx_get_encode);
727