1 /******************************************************************************
4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5 * Linux device driver for RTL8192SU
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 * Modifications for inclusion into the Linux staging tree are
21 * Copyright(c) 2010 Larry Finger. All rights reserved.
23 * Contact information:
24 * WLAN FAE <wlanfae@realtek.com>.
25 * Larry Finger <Larry.Finger@lwfinger.net>
27 ******************************************************************************/
31 #include "drv_types.h"
32 #include "ieee80211.h"
34 #include "osdep_service.h"
35 #include "wlan_bssdef.h"
37 static const u8 WPA_OUI_TYPE[] = {0x00, 0x50, 0xf2, 1};
38 static const u8 WPA_CIPHER_SUITE_NONE[] = {0x00, 0x50, 0xf2, 0};
39 static const u8 WPA_CIPHER_SUITE_WEP40[] = {0x00, 0x50, 0xf2, 1};
40 static const u8 WPA_CIPHER_SUITE_TKIP[] = {0x00, 0x50, 0xf2, 2};
41 static const u8 WPA_CIPHER_SUITE_CCMP[] = {0x00, 0x50, 0xf2, 4};
42 static const u8 WPA_CIPHER_SUITE_WEP104[] = {0x00, 0x50, 0xf2, 5};
44 static const u8 RSN_CIPHER_SUITE_NONE[] = {0x00, 0x0f, 0xac, 0};
45 static const u8 RSN_CIPHER_SUITE_WEP40[] = {0x00, 0x0f, 0xac, 1};
46 static const u8 RSN_CIPHER_SUITE_TKIP[] = {0x00, 0x0f, 0xac, 2};
47 static const u8 RSN_CIPHER_SUITE_CCMP[] = {0x00, 0x0f, 0xac, 4};
48 static const u8 RSN_CIPHER_SUITE_WEP104[] = {0x00, 0x0f, 0xac, 5};
50 /*-----------------------------------------------------------
51 * for adhoc-master to generate ie and provide supported-rate to fw
52 *-----------------------------------------------------------
55 static u8 WIFI_CCKRATES[] = {
56 (IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
57 (IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
58 (IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
59 (IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)
62 static u8 WIFI_OFDMRATES[] = {
63 (IEEE80211_OFDM_RATE_6MB),
64 (IEEE80211_OFDM_RATE_9MB),
65 (IEEE80211_OFDM_RATE_12MB),
66 (IEEE80211_OFDM_RATE_18MB),
67 (IEEE80211_OFDM_RATE_24MB),
68 (IEEE80211_OFDM_RATE_36MB),
69 (IEEE80211_OFDM_RATE_48MB),
70 (IEEE80211_OFDM_RATE_54MB)
73 uint r8712_is_cckrates_included(u8 *rate)
77 while (rate[i] != 0) {
78 if ((((rate[i]) & 0x7f) == 2) || (((rate[i]) & 0x7f) == 4) ||
79 (((rate[i]) & 0x7f) == 11) || (((rate[i]) & 0x7f) == 22))
86 uint r8712_is_cckratesonly_included(u8 *rate)
90 while (rate[i] != 0) {
91 if ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
92 (((rate[i]) & 0x7f) != 11) && (((rate[i]) & 0x7f) != 22))
99 /* r8712_set_ie will update frame length */
100 u8 *r8712_set_ie(u8 *pbuf, sint index, uint len, u8 *source, uint *frlen)
103 *(pbuf + 1) = (u8)len;
105 memcpy((void *)(pbuf + 2), (void *)source, len);
106 *frlen = *frlen + (len + 2);
107 return pbuf + len + 2;
110 /*----------------------------------------------------------------------------
111 index: the information element id index, limit is the limit for search
112 -----------------------------------------------------------------------------*/
113 u8 *r8712_get_ie(u8 *pbuf, sint index, sint *len, sint limit)
137 static void set_supported_rate(u8 *rates, uint mode)
139 memset(rates, 0, NDIS_802_11_LENGTH_RATES_EX);
142 memcpy(rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
146 memcpy(rates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
149 memcpy(rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
150 memcpy(rates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES,
151 IEEE80211_NUM_OFDM_RATESLEN);
156 static uint r8712_get_rateset_len(u8 *rateset)
161 if ((rateset[i]) == 0)
170 int r8712_generate_ie(struct registry_priv *pregistrypriv)
173 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
174 u8 *ie = pdev_network->IEs;
176 /*timestamp will be inserted by hardware*/
179 /*beacon interval : 2bytes*/
180 *(u16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);
185 *(u16 *)ie |= cpu_to_le16(cap_IBSS);
186 if (pregistrypriv->preamble == PREAMBLE_SHORT)
187 *(u16 *)ie |= cpu_to_le16(cap_ShortPremble);
188 if (pdev_network->Privacy)
189 *(u16 *)ie |= cpu_to_le16(cap_Privacy);
193 ie = r8712_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength,
194 pdev_network->Ssid.Ssid, &sz);
196 set_supported_rate(pdev_network->rates, pregistrypriv->wireless_mode);
197 rateLen = r8712_get_rateset_len(pdev_network->rates);
199 ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_, 8,
200 pdev_network->rates, &sz);
201 ie = r8712_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8),
202 (pdev_network->rates + 8), &sz);
204 ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_,
205 rateLen, pdev_network->rates, &sz);
207 ie = r8712_set_ie(ie, _DSSET_IE_, 1,
208 (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
209 /*IBSS Parameter Set*/
210 ie = r8712_set_ie(ie, _IBSS_PARA_IE_, 2,
211 (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
215 unsigned char *r8712_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
219 unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
223 pbuf = r8712_get_ie(pbuf, _WPA_IE_ID_, &len, limit);
225 /*check if oui matches...*/
226 if (memcmp((pbuf + 2), wpa_oui_type,
227 sizeof(wpa_oui_type)))
230 memcpy((u8 *)&val16, (pbuf + 6), sizeof(val16));
231 val16 = le16_to_cpu(val16);
234 *wpa_ie_len = *(pbuf + 1);
240 limit = limit - (pbuf - pie) - 2 - len;
249 unsigned char *r8712_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
251 return r8712_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
254 static int r8712_get_wpa_cipher_suite(u8 *s)
256 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
257 return WPA_CIPHER_NONE;
258 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
259 return WPA_CIPHER_WEP40;
260 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
261 return WPA_CIPHER_TKIP;
262 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
263 return WPA_CIPHER_CCMP;
264 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
265 return WPA_CIPHER_WEP104;
269 static int r8712_get_wpa2_cipher_suite(u8 *s)
271 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
272 return WPA_CIPHER_NONE;
273 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
274 return WPA_CIPHER_WEP40;
275 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
276 return WPA_CIPHER_TKIP;
277 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
278 return WPA_CIPHER_CCMP;
279 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
280 return WPA_CIPHER_WEP104;
284 int r8712_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher,
285 int *pairwise_cipher)
291 if (wpa_ie_len <= 0) {
292 /* No WPA IE - fail silently */
295 if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie + 1) != (u8)(wpa_ie_len - 2))
296 || (memcmp(wpa_ie + 2, (void *)WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
300 left = wpa_ie_len - 8;
302 if (left >= WPA_SELECTOR_LEN) {
303 *group_cipher = r8712_get_wpa_cipher_suite(pos);
304 pos += WPA_SELECTOR_LEN;
305 left -= WPA_SELECTOR_LEN;
310 count = le16_to_cpu(*(u16 *)pos);
313 if (count == 0 || left < count * WPA_SELECTOR_LEN)
315 for (i = 0; i < count; i++) {
316 *pairwise_cipher |= r8712_get_wpa_cipher_suite(pos);
317 pos += WPA_SELECTOR_LEN;
318 left -= WPA_SELECTOR_LEN;
320 } else if (left == 1)
325 int r8712_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher,
326 int *pairwise_cipher)
332 if (rsn_ie_len <= 0) {
333 /* No RSN IE - fail silently */
336 if ((*rsn_ie != _WPA2_IE_ID_) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2)))
340 left = rsn_ie_len - 4;
342 if (left >= RSN_SELECTOR_LEN) {
343 *group_cipher = r8712_get_wpa2_cipher_suite(pos);
344 pos += RSN_SELECTOR_LEN;
345 left -= RSN_SELECTOR_LEN;
350 count = le16_to_cpu(*(u16 *)pos);
353 if (count == 0 || left < count * RSN_SELECTOR_LEN)
355 for (i = 0; i < count; i++) {
356 *pairwise_cipher |= r8712_get_wpa2_cipher_suite(pos);
357 pos += RSN_SELECTOR_LEN;
358 left -= RSN_SELECTOR_LEN;
360 } else if (left == 1)
365 int r8712_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len,
366 u8 *wpa_ie, u16 *wpa_len)
369 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
372 /*Search required WPA or WPA2 IE and copy to sec_ie[ ]*/
373 cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
374 while (cnt < in_len) {
375 authmode = in_ie[cnt];
376 if ((authmode == _WPA_IE_ID_) &&
377 (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
378 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
379 *wpa_len = in_ie[cnt+1]+2;
380 cnt += in_ie[cnt + 1] + 2; /*get next */
382 if (authmode == _WPA2_IE_ID_) {
383 memcpy(rsn_ie, &in_ie[cnt],
385 *rsn_len = in_ie[cnt+1] + 2;
386 cnt += in_ie[cnt+1] + 2; /*get next*/
388 cnt += in_ie[cnt+1] + 2; /*get next*/
391 return *rsn_len + *wpa_len;
394 int r8712_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
398 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
402 while (cnt < in_len) {
404 if ((eid == _WPA_IE_ID_) &&
405 (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
406 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
407 *wps_ielen = in_ie[cnt+1]+2;
408 cnt += in_ie[cnt+1]+2;
412 cnt += in_ie[cnt+1]+2; /* goto next */