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 *SupportedRates, uint mode)
139 memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
142 memcpy(SupportedRates, WIFI_CCKRATES,
143 IEEE80211_CCK_RATE_LEN);
147 memcpy(SupportedRates, WIFI_OFDMRATES,
148 IEEE80211_NUM_OFDM_RATESLEN);
151 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
152 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES,
153 IEEE80211_NUM_OFDM_RATESLEN);
158 static uint r8712_get_rateset_len(u8 *rateset)
163 if ((rateset[i]) == 0)
172 int r8712_generate_ie(struct registry_priv *pregistrypriv)
175 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
176 u8 *ie = pdev_network->IEs;
178 /*timestamp will be inserted by hardware*/
181 /*beacon interval : 2bytes*/
182 *(u16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);
187 *(u16 *)ie |= cpu_to_le16(cap_IBSS);
188 if (pregistrypriv->preamble == PREAMBLE_SHORT)
189 *(u16 *)ie |= cpu_to_le16(cap_ShortPremble);
190 if (pdev_network->Privacy)
191 *(u16 *)ie |= cpu_to_le16(cap_Privacy);
195 ie = r8712_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength,
196 pdev_network->Ssid.Ssid, &sz);
198 set_supported_rate(pdev_network->SupportedRates,
199 pregistrypriv->wireless_mode);
200 rateLen = r8712_get_rateset_len(pdev_network->SupportedRates);
202 ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_, 8,
203 pdev_network->SupportedRates, &sz);
204 ie = r8712_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8),
205 (pdev_network->SupportedRates + 8), &sz);
207 ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_,
208 rateLen, pdev_network->SupportedRates, &sz);
210 ie = r8712_set_ie(ie, _DSSET_IE_, 1,
211 (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
212 /*IBSS Parameter Set*/
213 ie = r8712_set_ie(ie, _IBSS_PARA_IE_, 2,
214 (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
218 unsigned char *r8712_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
222 unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
226 pbuf = r8712_get_ie(pbuf, _WPA_IE_ID_, &len, limit);
228 /*check if oui matches...*/
229 if (memcmp((pbuf + 2), wpa_oui_type,
230 sizeof(wpa_oui_type)))
233 memcpy((u8 *)&val16, (pbuf + 6), sizeof(val16));
234 val16 = le16_to_cpu(val16);
237 *wpa_ie_len = *(pbuf + 1);
243 limit = limit - (pbuf - pie) - 2 - len;
252 unsigned char *r8712_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
254 return r8712_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
257 static int r8712_get_wpa_cipher_suite(u8 *s)
259 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
260 return WPA_CIPHER_NONE;
261 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
262 return WPA_CIPHER_WEP40;
263 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
264 return WPA_CIPHER_TKIP;
265 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
266 return WPA_CIPHER_CCMP;
267 if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
268 return WPA_CIPHER_WEP104;
272 static int r8712_get_wpa2_cipher_suite(u8 *s)
274 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
275 return WPA_CIPHER_NONE;
276 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
277 return WPA_CIPHER_WEP40;
278 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
279 return WPA_CIPHER_TKIP;
280 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
281 return WPA_CIPHER_CCMP;
282 if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
283 return WPA_CIPHER_WEP104;
287 int r8712_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher,
288 int *pairwise_cipher)
294 if (wpa_ie_len <= 0) {
295 /* No WPA IE - fail silently */
298 if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie + 1) != (u8)(wpa_ie_len - 2))
299 || (memcmp(wpa_ie + 2, (void *)WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
303 left = wpa_ie_len - 8;
305 if (left >= WPA_SELECTOR_LEN) {
306 *group_cipher = r8712_get_wpa_cipher_suite(pos);
307 pos += WPA_SELECTOR_LEN;
308 left -= WPA_SELECTOR_LEN;
313 count = le16_to_cpu(*(u16 *)pos);
316 if (count == 0 || left < count * WPA_SELECTOR_LEN)
318 for (i = 0; i < count; i++) {
319 *pairwise_cipher |= r8712_get_wpa_cipher_suite(pos);
320 pos += WPA_SELECTOR_LEN;
321 left -= WPA_SELECTOR_LEN;
323 } else if (left == 1)
328 int r8712_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher,
329 int *pairwise_cipher)
335 if (rsn_ie_len <= 0) {
336 /* No RSN IE - fail silently */
339 if ((*rsn_ie != _WPA2_IE_ID_) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2)))
343 left = rsn_ie_len - 4;
345 if (left >= RSN_SELECTOR_LEN) {
346 *group_cipher = r8712_get_wpa2_cipher_suite(pos);
347 pos += RSN_SELECTOR_LEN;
348 left -= RSN_SELECTOR_LEN;
353 count = le16_to_cpu(*(u16 *)pos);
356 if (count == 0 || left < count * RSN_SELECTOR_LEN)
358 for (i = 0; i < count; i++) {
359 *pairwise_cipher |= r8712_get_wpa2_cipher_suite(pos);
360 pos += RSN_SELECTOR_LEN;
361 left -= RSN_SELECTOR_LEN;
363 } else if (left == 1)
368 int r8712_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len,
369 u8 *wpa_ie, u16 *wpa_len)
372 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
375 /*Search required WPA or WPA2 IE and copy to sec_ie[ ]*/
376 cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
377 while (cnt < in_len) {
378 authmode = in_ie[cnt];
379 if ((authmode == _WPA_IE_ID_) &&
380 (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
381 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
382 *wpa_len = in_ie[cnt+1]+2;
383 cnt += in_ie[cnt + 1] + 2; /*get next */
385 if (authmode == _WPA2_IE_ID_) {
386 memcpy(rsn_ie, &in_ie[cnt],
388 *rsn_len = in_ie[cnt+1] + 2;
389 cnt += in_ie[cnt+1] + 2; /*get next*/
391 cnt += in_ie[cnt+1] + 2; /*get next*/
394 return *rsn_len + *wpa_len;
397 int r8712_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
401 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
405 while (cnt < in_len) {
407 if ((eid == _WPA_IE_ID_) &&
408 (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
409 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
410 *wps_ielen = in_ie[cnt+1]+2;
411 cnt += in_ie[cnt+1]+2;
415 cnt += in_ie[cnt+1]+2; /* goto next */