1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 *
19 ******************************************************************************/
20 #define _IEEE80211_C
21
22 #include <drv_types.h>
23 #include <osdep_intf.h>
24 #include <ieee80211.h>
25 #include <wifi.h>
26 #include <osdep_service.h>
27 #include <wlan_bssdef.h>
28
29 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
30 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
31 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
32 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
33 u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
34 u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
35 u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
36 u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
37 u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
38 u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
39
40 u16 RSN_VERSION_BSD = 1;
41 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
42 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
43 u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
44 u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
45 u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
46 u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
47 u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
48 u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
49 /* */
50 /* for adhoc-master to generate ie and provide supported-rate to fw */
51 /* */
52
53 static u8 WIFI_CCKRATES[] = {
54 (IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
55 (IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
56 (IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
57 (IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)
58 };
59
60 static u8 WIFI_OFDMRATES[] = {
61 (IEEE80211_OFDM_RATE_6MB),
62 (IEEE80211_OFDM_RATE_9MB),
63 (IEEE80211_OFDM_RATE_12MB),
64 (IEEE80211_OFDM_RATE_18MB),
65 (IEEE80211_OFDM_RATE_24MB),
66 IEEE80211_OFDM_RATE_36MB,
67 IEEE80211_OFDM_RATE_48MB,
68 IEEE80211_OFDM_RATE_54MB
69 };
70
71
rtw_get_bit_value_from_ieee_value(u8 val)72 int rtw_get_bit_value_from_ieee_value(u8 val)
73 {
74 unsigned char dot11_rate_table[] = {
75 2, 4, 11, 22, 12, 18, 24, 36, 48,
76 72, 96, 108, 0}; /* last element must be zero!! */
77
78 int i = 0;
79 while (dot11_rate_table[i] != 0) {
80 if (dot11_rate_table[i] == val)
81 return BIT(i);
82 i++;
83 }
84 return 0;
85 }
86
rtw_is_cckrates_included(u8 * rate)87 uint rtw_is_cckrates_included(u8 *rate)
88 {
89 u32 i = 0;
90
91 while (rate[i] != 0) {
92 if ((((rate[i]) & 0x7f) == 2) || (((rate[i]) & 0x7f) == 4) ||
93 (((rate[i]) & 0x7f) == 11) || (((rate[i]) & 0x7f) == 22))
94 return true;
95 i++;
96 }
97 return false;
98 }
99
rtw_is_cckratesonly_included(u8 * rate)100 uint rtw_is_cckratesonly_included(u8 *rate)
101 {
102 u32 i = 0;
103
104 while (rate[i] != 0) {
105 if ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
106 (((rate[i]) & 0x7f) != 11) && (((rate[i]) & 0x7f) != 22))
107 return false;
108 i++;
109 }
110
111 return true;
112 }
113
rtw_check_network_type(unsigned char * rate,int ratelen,int channel)114 int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
115 {
116 if (channel > 14) {
117 if ((rtw_is_cckrates_included(rate)) == true)
118 return WIRELESS_INVALID;
119 else
120 return WIRELESS_11A;
121 } else { /* could be pure B, pure G, or B/G */
122 if ((rtw_is_cckratesonly_included(rate)) == true)
123 return WIRELESS_11B;
124 else if ((rtw_is_cckrates_included(rate)) == true)
125 return WIRELESS_11BG;
126 else
127 return WIRELESS_11G;
128 }
129 }
130
rtw_set_fixed_ie(unsigned char * pbuf,unsigned int len,unsigned char * source,unsigned int * frlen)131 u8 *rtw_set_fixed_ie(unsigned char *pbuf, unsigned int len, unsigned char *source,
132 unsigned int *frlen)
133 {
134 memcpy((void *)pbuf, (void *)source, len);
135 *frlen = *frlen + len;
136 return pbuf + len;
137 }
138
139 /* rtw_set_ie will update frame length */
rtw_set_ie(u8 * pbuf,int index,uint len,u8 * source,uint * frlen)140 u8 *rtw_set_ie
141 (
142 u8 *pbuf,
143 int index,
144 uint len,
145 u8 *source,
146 uint *frlen /* frame length */
147 )
148 {
149 *pbuf = (u8)index;
150
151 *(pbuf + 1) = (u8)len;
152
153 if (len > 0)
154 memcpy((void *)(pbuf + 2), (void *)source, len);
155
156 *frlen = *frlen + (len + 2);
157
158 return pbuf + len + 2;
159 }
160
rtw_set_ie_ch_switch(u8 * buf,u32 * buf_len,u8 ch_switch_mode,u8 new_ch,u8 ch_switch_cnt)161 inline u8 *rtw_set_ie_ch_switch(u8 *buf, u32 *buf_len, u8 ch_switch_mode,
162 u8 new_ch, u8 ch_switch_cnt)
163 {
164 u8 ie_data[3];
165
166 ie_data[0] = ch_switch_mode;
167 ie_data[1] = new_ch;
168 ie_data[2] = ch_switch_cnt;
169 return rtw_set_ie(buf, WLAN_EID_CHANNEL_SWITCH, 3, ie_data, buf_len);
170 }
171
secondary_ch_offset_to_hal_ch_offset(u8 ch_offset)172 inline u8 secondary_ch_offset_to_hal_ch_offset(u8 ch_offset)
173 {
174 if (ch_offset == SCN)
175 return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
176 else if (ch_offset == SCA)
177 return HAL_PRIME_CHNL_OFFSET_UPPER;
178 else if (ch_offset == SCB)
179 return HAL_PRIME_CHNL_OFFSET_LOWER;
180
181 return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
182 }
183
hal_ch_offset_to_secondary_ch_offset(u8 ch_offset)184 inline u8 hal_ch_offset_to_secondary_ch_offset(u8 ch_offset)
185 {
186 if (ch_offset == HAL_PRIME_CHNL_OFFSET_DONT_CARE)
187 return SCN;
188 else if (ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
189 return SCB;
190 else if (ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
191 return SCA;
192
193 return SCN;
194 }
195
rtw_set_ie_secondary_ch_offset(u8 * buf,u32 * buf_len,u8 secondary_ch_offset)196 inline u8 *rtw_set_ie_secondary_ch_offset(u8 *buf, u32 *buf_len, u8 secondary_ch_offset)
197 {
198 return rtw_set_ie(buf, WLAN_EID_SECONDARY_CHANNEL_OFFSET, 1, &secondary_ch_offset, buf_len);
199 }
200
rtw_set_ie_mesh_ch_switch_parm(u8 * buf,u32 * buf_len,u8 ttl,u8 flags,u16 reason,u16 precedence)201 inline u8 *rtw_set_ie_mesh_ch_switch_parm(u8 *buf, u32 *buf_len, u8 ttl,
202 u8 flags, u16 reason, u16 precedence)
203 {
204 u8 ie_data[6];
205
206 ie_data[0] = ttl;
207 ie_data[1] = flags;
208 *(u16 *)(ie_data+2) = cpu_to_le16(reason);
209 *(u16 *)(ie_data+4) = cpu_to_le16(precedence);
210
211 return rtw_set_ie(buf, 0x118, 6, ie_data, buf_len);
212 }
213
214 /*----------------------------------------------------------------------------
215 index: the information element id index, limit is the limit for search
216 -----------------------------------------------------------------------------*/
rtw_get_ie(u8 * pbuf,int index,int * len,int limit)217 u8 *rtw_get_ie(u8 *pbuf, int index, int *len, int limit)
218 {
219 int tmp, i;
220 u8 *p;
221 if (limit < 1)
222 return NULL;
223
224 p = pbuf;
225 i = 0;
226 *len = 0;
227 while (1) {
228 if (*p == index) {
229 *len = *(p + 1);
230 return p;
231 } else {
232 tmp = *(p + 1);
233 p += (tmp + 2);
234 i += (tmp + 2);
235 }
236 if (i >= limit)
237 break;
238 }
239 return NULL;
240 }
241
242 /**
243 * rtw_get_ie_ex - Search specific IE from a series of IEs
244 * @in_ie: Address of IEs to search
245 * @in_len: Length limit from in_ie
246 * @eid: Element ID to match
247 * @oui: OUI to match
248 * @oui_len: OUI length
249 * @ie: If not NULL and the specific IE is found, the IE will be copied to the buf starting from the specific IE
250 * @ielen: If not NULL and the specific IE is found, will set to the length of the entire IE
251 *
252 * Returns: The address of the specific IE found, or NULL
253 */
rtw_get_ie_ex(u8 * in_ie,uint in_len,u8 eid,u8 * oui,u8 oui_len,u8 * ie,uint * ielen)254 u8 *rtw_get_ie_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len, u8 *ie, uint *ielen)
255 {
256 uint cnt;
257 u8 *target_ie = NULL;
258
259
260 if (ielen)
261 *ielen = 0;
262
263 if (!in_ie || in_len <= 0)
264 return target_ie;
265
266 cnt = 0;
267
268 while (cnt < in_len) {
269 if (eid == in_ie[cnt] && (!oui || !memcmp(&in_ie[cnt+2], oui, oui_len))) {
270 target_ie = &in_ie[cnt];
271
272 if (ie)
273 memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
274
275 if (ielen)
276 *ielen = in_ie[cnt+1]+2;
277
278 break;
279 } else {
280 cnt += in_ie[cnt+1]+2; /* goto next */
281 }
282 }
283 return target_ie;
284 }
285
286 /**
287 * rtw_ies_remove_ie - Find matching IEs and remove
288 * @ies: Address of IEs to search
289 * @ies_len: Pointer of length of ies, will update to new length
290 * @offset: The offset to start scarch
291 * @eid: Element ID to match
292 * @oui: OUI to match
293 * @oui_len: OUI length
294 *
295 * Returns: _SUCCESS: ies is updated, _FAIL: not updated
296 */
rtw_ies_remove_ie(u8 * ies,uint * ies_len,uint offset,u8 eid,u8 * oui,u8 oui_len)297 int rtw_ies_remove_ie(u8 *ies, uint *ies_len, uint offset, u8 eid, u8 *oui, u8 oui_len)
298 {
299 int ret = _FAIL;
300 u8 *target_ie;
301 u32 target_ielen;
302 u8 *start;
303 uint search_len;
304
305 if (!ies || !ies_len || *ies_len <= offset)
306 goto exit;
307
308 start = ies + offset;
309 search_len = *ies_len - offset;
310
311 while (1) {
312 target_ie = rtw_get_ie_ex(start, search_len, eid, oui, oui_len, NULL, &target_ielen);
313 if (target_ie && target_ielen) {
314 u8 buf[MAX_IE_SZ] = {0};
315 u8 *remain_ies = target_ie + target_ielen;
316 uint remain_len = search_len - (remain_ies - start);
317
318 memcpy(buf, remain_ies, remain_len);
319 memcpy(target_ie, buf, remain_len);
320 *ies_len = *ies_len - target_ielen;
321 ret = _SUCCESS;
322
323 start = target_ie;
324 search_len = remain_len;
325 } else {
326 break;
327 }
328 }
329 exit:
330 return ret;
331 }
332
rtw_set_supported_rate(u8 * SupportedRates,uint mode)333 void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
334 {
335
336 memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
337
338 switch (mode) {
339 case WIRELESS_11B:
340 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
341 break;
342 case WIRELESS_11G:
343 case WIRELESS_11A:
344 case WIRELESS_11_5N:
345 case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
346 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
347 break;
348 case WIRELESS_11BG:
349 case WIRELESS_11G_24N:
350 case WIRELESS_11_24N:
351 case WIRELESS_11BG_24N:
352 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
353 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
354 break;
355 }
356 }
357
rtw_get_rateset_len(u8 * rateset)358 uint rtw_get_rateset_len(u8 *rateset)
359 {
360 uint i = 0;
361 while (1) {
362 if ((rateset[i]) == 0)
363 break;
364 if (i > 12)
365 break;
366 i++;
367 }
368 return i;
369 }
370
rtw_generate_ie(struct registry_priv * pregistrypriv)371 int rtw_generate_ie(struct registry_priv *pregistrypriv)
372 {
373 u8 wireless_mode;
374 int sz = 0, rateLen;
375 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
376 u8 *ie = pdev_network->IEs;
377
378
379 /* timestamp will be inserted by hardware */
380 sz += 8;
381 ie += sz;
382
383 /* beacon interval : 2bytes */
384 *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
385 sz += 2;
386 ie += 2;
387
388 /* capability info */
389 *(u16 *)ie = 0;
390
391 *(__le16 *)ie |= cpu_to_le16(cap_IBSS);
392
393 if (pregistrypriv->preamble == PREAMBLE_SHORT)
394 *(__le16 *)ie |= cpu_to_le16(cap_ShortPremble);
395
396 if (pdev_network->Privacy)
397 *(__le16 *)ie |= cpu_to_le16(cap_Privacy);
398
399 sz += 2;
400 ie += 2;
401
402 /* SSID */
403 ie = rtw_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
404
405 /* supported rates */
406 if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
407 if (pdev_network->Configuration.DSConfig > 14)
408 wireless_mode = WIRELESS_11A_5N;
409 else
410 wireless_mode = WIRELESS_11BG_24N;
411 } else {
412 wireless_mode = pregistrypriv->wireless_mode;
413 }
414
415 rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
416
417 rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
418
419 if (rateLen > 8) {
420 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, 8, pdev_network->SupportedRates, &sz);
421 /* ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
422 } else {
423 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, rateLen, pdev_network->SupportedRates, &sz);
424 }
425
426 /* DS parameter set */
427 ie = rtw_set_ie(ie, _DSSET_IE_, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
428
429 /* IBSS Parameter Set */
430
431 ie = rtw_set_ie(ie, _IBSS_PARA_IE_, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
432
433 if (rateLen > 8)
434 ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
435
436 return sz;
437 }
438
rtw_get_wpa_ie(unsigned char * pie,int * wpa_ie_len,int limit)439 unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
440 {
441 int len;
442 u16 val16;
443 __le16 le_tmp;
444 unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
445 u8 *pbuf = pie;
446 int limit_new = limit;
447
448 while (1) {
449 pbuf = rtw_get_ie(pbuf, _WPA_IE_ID_, &len, limit_new);
450
451 if (pbuf) {
452 /* check if oui matches... */
453 if (!memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type)) == false)
454 goto check_next_ie;
455
456 /* check version... */
457 memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
458
459 val16 = le16_to_cpu(le_tmp);
460 if (val16 != 0x0001)
461 goto check_next_ie;
462 *wpa_ie_len = *(pbuf + 1);
463 return pbuf;
464 } else {
465 *wpa_ie_len = 0;
466 return NULL;
467 }
468
469 check_next_ie:
470 limit_new = limit - (pbuf - pie) - 2 - len;
471 if (limit_new <= 0)
472 break;
473 pbuf += (2 + len);
474 }
475 *wpa_ie_len = 0;
476 return NULL;
477 }
478
rtw_get_wpa2_ie(unsigned char * pie,int * rsn_ie_len,int limit)479 unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
480 {
481
482 return rtw_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
483 }
484
rtw_get_wpa_cipher_suite(u8 * s)485 int rtw_get_wpa_cipher_suite(u8 *s)
486 {
487 if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
488 return WPA_CIPHER_NONE;
489 if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
490 return WPA_CIPHER_WEP40;
491 if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
492 return WPA_CIPHER_TKIP;
493 if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
494 return WPA_CIPHER_CCMP;
495 if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
496 return WPA_CIPHER_WEP104;
497
498 return 0;
499 }
500
rtw_get_wpa2_cipher_suite(u8 * s)501 int rtw_get_wpa2_cipher_suite(u8 *s)
502 {
503 if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
504 return WPA_CIPHER_NONE;
505 if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
506 return WPA_CIPHER_WEP40;
507 if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
508 return WPA_CIPHER_TKIP;
509 if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
510 return WPA_CIPHER_CCMP;
511 if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
512 return WPA_CIPHER_WEP104;
513
514 return 0;
515 }
516
517
rtw_parse_wpa_ie(u8 * wpa_ie,int wpa_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)518 int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
519 {
520 int i, ret = _SUCCESS;
521 int left, count;
522 u8 *pos;
523 u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
524
525 if (wpa_ie_len <= 0) {
526 /* No WPA IE - fail silently */
527 return _FAIL;
528 }
529
530
531 if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie+1) != (u8)(wpa_ie_len - 2)) ||
532 (memcmp(wpa_ie+2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
533 return _FAIL;
534
535 pos = wpa_ie;
536
537 pos += 8;
538 left = wpa_ie_len - 8;
539
540
541 /* group_cipher */
542 if (left >= WPA_SELECTOR_LEN) {
543 *group_cipher = rtw_get_wpa_cipher_suite(pos);
544 pos += WPA_SELECTOR_LEN;
545 left -= WPA_SELECTOR_LEN;
546 } else if (left > 0) {
547 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
548 return _FAIL;
549 }
550
551 /* pairwise_cipher */
552 if (left >= 2) {
553 count = get_unaligned_le16(pos);
554 pos += 2;
555 left -= 2;
556
557 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
558 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
559 "count %u left %u", __func__, count, left));
560 return _FAIL;
561 }
562
563 for (i = 0; i < count; i++) {
564 *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
565
566 pos += WPA_SELECTOR_LEN;
567 left -= WPA_SELECTOR_LEN;
568 }
569 } else if (left == 1) {
570 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
571 return _FAIL;
572 }
573
574 if (is_8021x) {
575 if (left >= 6) {
576 pos += 2;
577 if (!memcmp(pos, SUITE_1X, 4)) {
578 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s : there has 802.1x auth\n", __func__));
579 *is_8021x = 1;
580 }
581 }
582 }
583
584 return ret;
585 }
586
rtw_parse_wpa2_ie(u8 * rsn_ie,int rsn_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)587 int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
588 {
589 int i, ret = _SUCCESS;
590 int left, count;
591 u8 *pos;
592 u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
593
594 if (rsn_ie_len <= 0) {
595 /* No RSN IE - fail silently */
596 return _FAIL;
597 }
598
599
600 if ((*rsn_ie != _WPA2_IE_ID_) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2)))
601 return _FAIL;
602
603 pos = rsn_ie;
604 pos += 4;
605 left = rsn_ie_len - 4;
606
607 /* group_cipher */
608 if (left >= RSN_SELECTOR_LEN) {
609 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
610
611 pos += RSN_SELECTOR_LEN;
612 left -= RSN_SELECTOR_LEN;
613
614 } else if (left > 0) {
615 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
616 return _FAIL;
617 }
618
619 /* pairwise_cipher */
620 if (left >= 2) {
621 count = get_unaligned_le16(pos);
622 pos += 2;
623 left -= 2;
624
625 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
626 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
627 "count %u left %u", __func__, count, left));
628 return _FAIL;
629 }
630
631 for (i = 0; i < count; i++) {
632 *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
633
634 pos += RSN_SELECTOR_LEN;
635 left -= RSN_SELECTOR_LEN;
636 }
637
638 } else if (left == 1) {
639 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
640
641 return _FAIL;
642 }
643
644 if (is_8021x) {
645 if (left >= 6) {
646 pos += 2;
647 if (!memcmp(pos, SUITE_1X, 4)) {
648 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__));
649 *is_8021x = 1;
650 }
651 }
652 }
653 return ret;
654 }
655
rtw_get_sec_ie(u8 * in_ie,uint in_len,u8 * rsn_ie,u16 * rsn_len,u8 * wpa_ie,u16 * wpa_len)656 int rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
657 {
658 u8 authmode, sec_idx, i;
659 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
660 uint cnt;
661
662
663 /* Search required WPA or WPA2 IE and copy to sec_ie[] */
664
665 cnt = _TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_;
666
667 sec_idx = 0;
668
669 while (cnt < in_len) {
670 authmode = in_ie[cnt];
671
672 if ((authmode == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], &wpa_oui[0], 4))) {
673 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
674 ("\n rtw_get_wpa_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
675 sec_idx, in_ie[cnt+1]+2));
676
677 if (wpa_ie) {
678 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
679
680 for (i = 0; i < (in_ie[cnt+1]+2); i += 8) {
681 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
682 ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
683 wpa_ie[i], wpa_ie[i+1], wpa_ie[i+2], wpa_ie[i+3], wpa_ie[i+4],
684 wpa_ie[i+5], wpa_ie[i+6], wpa_ie[i+7]));
685 }
686 }
687
688 *wpa_len = in_ie[cnt+1]+2;
689 cnt += in_ie[cnt+1]+2; /* get next */
690 } else {
691 if (authmode == _WPA2_IE_ID_) {
692 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
693 ("\n get_rsn_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
694 sec_idx, in_ie[cnt+1]+2));
695
696 if (rsn_ie) {
697 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt+1]+2);
698
699 for (i = 0; i < (in_ie[cnt+1]+2); i += 8) {
700 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
701 ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
702 rsn_ie[i], rsn_ie[i+1], rsn_ie[i+2], rsn_ie[i+3], rsn_ie[i+4],
703 rsn_ie[i+5], rsn_ie[i+6], rsn_ie[i+7]));
704 }
705 }
706
707 *rsn_len = in_ie[cnt+1]+2;
708 cnt += in_ie[cnt+1]+2; /* get next */
709 } else {
710 cnt += in_ie[cnt+1]+2; /* get next */
711 }
712 }
713 }
714
715
716 return *rsn_len + *wpa_len;
717 }
718
rtw_is_wps_ie(u8 * ie_ptr,uint * wps_ielen)719 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
720 {
721 u8 match = false;
722 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
723
724 if (ie_ptr == NULL)
725 return match;
726
727 eid = ie_ptr[0];
728
729 if ((eid == _WPA_IE_ID_) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
730 *wps_ielen = ie_ptr[1]+2;
731 match = true;
732 }
733 return match;
734 }
735
736 /**
737 * rtw_get_wps_ie - Search WPS IE from a series of IEs
738 * @in_ie: Address of IEs to search
739 * @in_len: Length limit from in_ie
740 * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
741 * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
742 *
743 * Returns: The address of the WPS IE found, or NULL
744 */
rtw_get_wps_ie(u8 * in_ie,uint in_len,u8 * wps_ie,uint * wps_ielen)745 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
746 {
747 uint cnt;
748 u8 *wpsie_ptr = NULL;
749 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
750
751 if (wps_ielen)
752 *wps_ielen = 0;
753
754 if (!in_ie || in_len <= 0)
755 return wpsie_ptr;
756
757 cnt = 0;
758
759 while (cnt < in_len) {
760 eid = in_ie[cnt];
761
762 if ((eid == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
763 wpsie_ptr = &in_ie[cnt];
764
765 if (wps_ie)
766 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
767
768 if (wps_ielen)
769 *wps_ielen = in_ie[cnt+1]+2;
770
771 cnt += in_ie[cnt+1]+2;
772
773 break;
774 } else {
775 cnt += in_ie[cnt+1]+2; /* goto next */
776 }
777 }
778 return wpsie_ptr;
779 }
780
781 /**
782 * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
783 * @wps_ie: Address of WPS IE to search
784 * @wps_ielen: Length limit from wps_ie
785 * @target_attr_id: The attribute ID of WPS attribute to search
786 * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
787 * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
788 *
789 * Returns: the address of the specific WPS attribute found, or NULL
790 */
rtw_get_wps_attr(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_attr,u32 * len_attr)791 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
792 {
793 u8 *attr_ptr = NULL;
794 u8 *target_attr_ptr = NULL;
795 u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
796
797 if (len_attr)
798 *len_attr = 0;
799
800 if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
801 (memcmp(wps_ie + 2, wps_oui, 4)))
802 return attr_ptr;
803
804 /* 6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
805 attr_ptr = wps_ie + 6; /* goto first attr */
806
807 while (attr_ptr - wps_ie < wps_ielen) {
808 /* 4 = 2(Attribute ID) + 2(Length) */
809 u16 attr_id = get_unaligned_be16(attr_ptr);
810 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
811 u16 attr_len = attr_data_len + 4;
812
813 if (attr_id == target_attr_id) {
814 target_attr_ptr = attr_ptr;
815 if (buf_attr)
816 memcpy(buf_attr, attr_ptr, attr_len);
817 if (len_attr)
818 *len_attr = attr_len;
819 break;
820 } else {
821 attr_ptr += attr_len; /* goto next */
822 }
823 }
824 return target_attr_ptr;
825 }
826
827 /**
828 * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
829 * @wps_ie: Address of WPS IE to search
830 * @wps_ielen: Length limit from wps_ie
831 * @target_attr_id: The attribute ID of WPS attribute to search
832 * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
833 * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
834 *
835 * Returns: the address of the specific WPS attribute content found, or NULL
836 */
rtw_get_wps_attr_content(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_content,uint * len_content)837 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
838 {
839 u8 *attr_ptr;
840 u32 attr_len;
841
842 if (len_content)
843 *len_content = 0;
844
845 attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
846
847 if (attr_ptr && attr_len) {
848 if (buf_content)
849 memcpy(buf_content, attr_ptr+4, attr_len-4);
850
851 if (len_content)
852 *len_content = attr_len-4;
853
854 return attr_ptr+4;
855 }
856
857 return NULL;
858 }
859
rtw_ieee802_11_parse_vendor_specific(u8 * pos,uint elen,struct rtw_ieee802_11_elems * elems,int show_errors)860 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
861 struct rtw_ieee802_11_elems *elems,
862 int show_errors)
863 {
864 unsigned int oui;
865
866 /* first 3 bytes in vendor specific information element are the IEEE
867 * OUI of the vendor. The following byte is used a vendor specific
868 * sub-type. */
869 if (elen < 4) {
870 if (show_errors) {
871 DBG_88E("short vendor specific information element ignored (len=%lu)\n",
872 (unsigned long)elen);
873 }
874 return -1;
875 }
876
877 oui = RTW_GET_BE24(pos);
878 switch (oui) {
879 case OUI_MICROSOFT:
880 /* Microsoft/Wi-Fi information elements are further typed and
881 * subtyped */
882 switch (pos[3]) {
883 case 1:
884 /* Microsoft OUI (00:50:F2) with OUI Type 1:
885 * real WPA information element */
886 elems->wpa_ie = pos;
887 elems->wpa_ie_len = elen;
888 break;
889 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
890 if (elen < 5) {
891 DBG_88E("short WME information element ignored (len=%lu)\n",
892 (unsigned long)elen);
893 return -1;
894 }
895 switch (pos[4]) {
896 case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
897 case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
898 elems->wme = pos;
899 elems->wme_len = elen;
900 break;
901 case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
902 elems->wme_tspec = pos;
903 elems->wme_tspec_len = elen;
904 break;
905 default:
906 DBG_88E("unknown WME information element ignored (subtype=%d len=%lu)\n",
907 pos[4], (unsigned long)elen);
908 return -1;
909 }
910 break;
911 case 4:
912 /* Wi-Fi Protected Setup (WPS) IE */
913 elems->wps_ie = pos;
914 elems->wps_ie_len = elen;
915 break;
916 default:
917 DBG_88E("Unknown Microsoft information element ignored (type=%d len=%lu)\n",
918 pos[3], (unsigned long)elen);
919 return -1;
920 }
921 break;
922
923 case OUI_BROADCOM:
924 switch (pos[3]) {
925 case VENDOR_HT_CAPAB_OUI_TYPE:
926 elems->vendor_ht_cap = pos;
927 elems->vendor_ht_cap_len = elen;
928 break;
929 default:
930 DBG_88E("Unknown Broadcom information element ignored (type=%d len=%lu)\n",
931 pos[3], (unsigned long)elen);
932 return -1;
933 }
934 break;
935 default:
936 DBG_88E("unknown vendor specific information element ignored (vendor OUI %02x:%02x:%02x len=%lu)\n",
937 pos[0], pos[1], pos[2], (unsigned long)elen);
938 return -1;
939 }
940 return 0;
941 }
942
943 /**
944 * ieee802_11_parse_elems - Parse information elements in management frames
945 * @start: Pointer to the start of IEs
946 * @len: Length of IE buffer in octets
947 * @elems: Data structure for parsed elements
948 * @show_errors: Whether to show parsing errors in debug log
949 * Returns: Parsing result
950 */
rtw_ieee802_11_parse_elems(u8 * start,uint len,struct rtw_ieee802_11_elems * elems,int show_errors)951 enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
952 struct rtw_ieee802_11_elems *elems,
953 int show_errors)
954 {
955 uint left = len;
956 u8 *pos = start;
957 int unknown = 0;
958
959 memset(elems, 0, sizeof(*elems));
960
961 while (left >= 2) {
962 u8 id, elen;
963
964 id = *pos++;
965 elen = *pos++;
966 left -= 2;
967
968 if (elen > left) {
969 if (show_errors) {
970 DBG_88E("IEEE 802.11 element parse failed (id=%d elen=%d left=%lu)\n",
971 id, elen, (unsigned long)left);
972 }
973 return ParseFailed;
974 }
975
976 switch (id) {
977 case WLAN_EID_SSID:
978 elems->ssid = pos;
979 elems->ssid_len = elen;
980 break;
981 case WLAN_EID_SUPP_RATES:
982 elems->supp_rates = pos;
983 elems->supp_rates_len = elen;
984 break;
985 case WLAN_EID_FH_PARAMS:
986 elems->fh_params = pos;
987 elems->fh_params_len = elen;
988 break;
989 case WLAN_EID_DS_PARAMS:
990 elems->ds_params = pos;
991 elems->ds_params_len = elen;
992 break;
993 case WLAN_EID_CF_PARAMS:
994 elems->cf_params = pos;
995 elems->cf_params_len = elen;
996 break;
997 case WLAN_EID_TIM:
998 elems->tim = pos;
999 elems->tim_len = elen;
1000 break;
1001 case WLAN_EID_IBSS_PARAMS:
1002 elems->ibss_params = pos;
1003 elems->ibss_params_len = elen;
1004 break;
1005 case WLAN_EID_CHALLENGE:
1006 elems->challenge = pos;
1007 elems->challenge_len = elen;
1008 break;
1009 case WLAN_EID_ERP_INFO:
1010 elems->erp_info = pos;
1011 elems->erp_info_len = elen;
1012 break;
1013 case WLAN_EID_EXT_SUPP_RATES:
1014 elems->ext_supp_rates = pos;
1015 elems->ext_supp_rates_len = elen;
1016 break;
1017 case WLAN_EID_VENDOR_SPECIFIC:
1018 if (rtw_ieee802_11_parse_vendor_specific(pos, elen, elems, show_errors))
1019 unknown++;
1020 break;
1021 case WLAN_EID_RSN:
1022 elems->rsn_ie = pos;
1023 elems->rsn_ie_len = elen;
1024 break;
1025 case WLAN_EID_PWR_CAPABILITY:
1026 elems->power_cap = pos;
1027 elems->power_cap_len = elen;
1028 break;
1029 case WLAN_EID_SUPPORTED_CHANNELS:
1030 elems->supp_channels = pos;
1031 elems->supp_channels_len = elen;
1032 break;
1033 case WLAN_EID_MOBILITY_DOMAIN:
1034 elems->mdie = pos;
1035 elems->mdie_len = elen;
1036 break;
1037 case WLAN_EID_FAST_BSS_TRANSITION:
1038 elems->ftie = pos;
1039 elems->ftie_len = elen;
1040 break;
1041 case WLAN_EID_TIMEOUT_INTERVAL:
1042 elems->timeout_int = pos;
1043 elems->timeout_int_len = elen;
1044 break;
1045 case WLAN_EID_HT_CAP:
1046 elems->ht_capabilities = pos;
1047 elems->ht_capabilities_len = elen;
1048 break;
1049 case WLAN_EID_HT_OPERATION:
1050 elems->ht_operation = pos;
1051 elems->ht_operation_len = elen;
1052 break;
1053 default:
1054 unknown++;
1055 if (!show_errors)
1056 break;
1057 DBG_88E("IEEE 802.11 element parse ignored unknown element (id=%d elen=%d)\n",
1058 id, elen);
1059 break;
1060 }
1061 left -= elen;
1062 pos += elen;
1063 }
1064 if (left)
1065 return ParseFailed;
1066 return unknown ? ParseUnknown : ParseOK;
1067 }
1068
rtw_macaddr_cfg(u8 * mac_addr)1069 void rtw_macaddr_cfg(u8 *mac_addr)
1070 {
1071 u8 mac[ETH_ALEN];
1072
1073 if (mac_addr == NULL)
1074 return;
1075
1076 if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
1077 /* Users specify the mac address */
1078 memcpy(mac_addr, mac, ETH_ALEN);
1079 } else {
1080 /* Use the mac address stored in the Efuse */
1081 memcpy(mac, mac_addr, ETH_ALEN);
1082 }
1083
1084 if (((mac[0] == 0xff) && (mac[1] == 0xff) && (mac[2] == 0xff) &&
1085 (mac[3] == 0xff) && (mac[4] == 0xff) && (mac[5] == 0xff)) ||
1086 ((mac[0] == 0x0) && (mac[1] == 0x0) && (mac[2] == 0x0) &&
1087 (mac[3] == 0x0) && (mac[4] == 0x0) && (mac[5] == 0x0))) {
1088 mac[0] = 0x00;
1089 mac[1] = 0xe0;
1090 mac[2] = 0x4c;
1091 mac[3] = 0x87;
1092 mac[4] = 0x00;
1093 mac[5] = 0x00;
1094 /* use default mac address */
1095 memcpy(mac_addr, mac, ETH_ALEN);
1096 DBG_88E("MAC Address from efuse error, assign default one !!!\n");
1097 }
1098
1099 DBG_88E("rtw_macaddr_cfg MAC Address = %pM\n", (mac_addr));
1100 }
1101
dump_ies(u8 * buf,u32 buf_len)1102 void dump_ies(u8 *buf, u32 buf_len)
1103 {
1104 u8 *pos = (u8 *)buf;
1105 u8 id, len;
1106
1107 while (pos-buf <= buf_len) {
1108 id = *pos;
1109 len = *(pos+1);
1110
1111 DBG_88E("%s ID:%u, LEN:%u\n", __func__, id, len);
1112 dump_wps_ie(pos, len);
1113
1114 pos += (2 + len);
1115 }
1116 }
1117
dump_wps_ie(u8 * ie,u32 ie_len)1118 void dump_wps_ie(u8 *ie, u32 ie_len)
1119 {
1120 u8 *pos = (u8 *)ie;
1121 u16 id;
1122 u16 len;
1123 u8 *wps_ie;
1124 uint wps_ielen;
1125
1126 wps_ie = rtw_get_wps_ie(ie, ie_len, NULL, &wps_ielen);
1127 if (wps_ie != ie || wps_ielen == 0)
1128 return;
1129
1130 pos += 6;
1131 while (pos-ie < ie_len) {
1132 id = get_unaligned_be16(pos);
1133 len = get_unaligned_be16(pos + 2);
1134 DBG_88E("%s ID:0x%04x, LEN:%u\n", __func__, id, len);
1135 pos += (4+len);
1136 }
1137 }
1138
1139 /* Baron adds to avoid FreeBSD warning */
ieee80211_is_empty_essid(const char * essid,int essid_len)1140 int ieee80211_is_empty_essid(const char *essid, int essid_len)
1141 {
1142 /* Single white space is for Linksys APs */
1143 if (essid_len == 1 && essid[0] == ' ')
1144 return 1;
1145
1146 /* Otherwise, if the entire essid is 0, we assume it is hidden */
1147 while (essid_len) {
1148 essid_len--;
1149 if (essid[essid_len] != '\0')
1150 return 0;
1151 }
1152
1153 return 1;
1154 }
1155
ieee80211_get_hdrlen(u16 fc)1156 int ieee80211_get_hdrlen(u16 fc)
1157 {
1158 int hdrlen = 24;
1159
1160 switch (WLAN_FC_GET_TYPE(fc)) {
1161 case RTW_IEEE80211_FTYPE_DATA:
1162 if (fc & RTW_IEEE80211_STYPE_QOS_DATA)
1163 hdrlen += 2;
1164 if ((fc & RTW_IEEE80211_FCTL_FROMDS) && (fc & RTW_IEEE80211_FCTL_TODS))
1165 hdrlen += 6; /* Addr4 */
1166 break;
1167 case RTW_IEEE80211_FTYPE_CTL:
1168 switch (WLAN_FC_GET_STYPE(fc)) {
1169 case RTW_IEEE80211_STYPE_CTS:
1170 case RTW_IEEE80211_STYPE_ACK:
1171 hdrlen = 10;
1172 break;
1173 default:
1174 hdrlen = 16;
1175 break;
1176 }
1177 break;
1178 }
1179
1180 return hdrlen;
1181 }
1182
rtw_get_cipher_info(struct wlan_network * pnetwork)1183 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1184 {
1185 u32 wpa_ielen;
1186 unsigned char *pbuf;
1187 int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1188 int ret = _FAIL;
1189 pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1190
1191 if (pbuf && (wpa_ielen > 0)) {
1192 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
1193 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1194 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1195 pnetwork->BcnInfo.group_cipher = group_cipher;
1196 pnetwork->BcnInfo.is_8021x = is8021x;
1197 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
1198 __func__, pnetwork->BcnInfo.pairwise_cipher, pnetwork->BcnInfo.is_8021x));
1199 ret = _SUCCESS;
1200 }
1201 } else {
1202 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1203
1204 if (pbuf && (wpa_ielen > 0)) {
1205 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
1206 if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1207 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE OK!!!\n"));
1208 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1209 pnetwork->BcnInfo.group_cipher = group_cipher;
1210 pnetwork->BcnInfo.is_8021x = is8021x;
1211 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d,"
1212 "pnetwork->group_cipher is %d, is_8021x is %d", __func__, pnetwork->BcnInfo.pairwise_cipher,
1213 pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
1214 ret = _SUCCESS;
1215 }
1216 }
1217 }
1218
1219 return ret;
1220 }
1221
rtw_get_bcn_info(struct wlan_network * pnetwork)1222 void rtw_get_bcn_info(struct wlan_network *pnetwork)
1223 {
1224 unsigned short cap = 0;
1225 u8 bencrypt = 0;
1226 __le16 le_tmp;
1227 u16 wpa_len = 0, rsn_len = 0;
1228 struct HT_info_element *pht_info = NULL;
1229 struct rtw_ieee80211_ht_cap *pht_cap = NULL;
1230 unsigned int len;
1231 unsigned char *p;
1232
1233 memcpy(&le_tmp, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1234 cap = le16_to_cpu(le_tmp);
1235 if (cap & WLAN_CAPABILITY_PRIVACY) {
1236 bencrypt = 1;
1237 pnetwork->network.Privacy = 1;
1238 } else {
1239 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1240 }
1241 rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
1242 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1243 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1244 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1245 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1246
1247 if (rsn_len > 0) {
1248 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1249 } else if (wpa_len > 0) {
1250 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1251 } else {
1252 if (bencrypt)
1253 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1254 }
1255 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1256 pnetwork->BcnInfo.encryp_protocol));
1257 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1258 pnetwork->BcnInfo.encryp_protocol));
1259 rtw_get_cipher_info(pnetwork);
1260
1261 /* get bwmode and ch_offset */
1262 /* parsing HT_CAP_IE */
1263 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_CAPABILITY_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1264 if (p && len > 0) {
1265 pht_cap = (struct rtw_ieee80211_ht_cap *)(p + 2);
1266 pnetwork->BcnInfo.ht_cap_info = pht_cap->cap_info;
1267 } else {
1268 pnetwork->BcnInfo.ht_cap_info = 0;
1269 }
1270 /* parsing HT_INFO_IE */
1271 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_ADD_INFO_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1272 if (p && len > 0) {
1273 pht_info = (struct HT_info_element *)(p + 2);
1274 pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1275 } else {
1276 pnetwork->BcnInfo.ht_info_infos_0 = 0;
1277 }
1278 }
1279
1280 /* show MCS rate, unit: 100Kbps */
rtw_mcs_rate(u8 rf_type,u8 bw_40MHz,u8 short_GI_20,u8 short_GI_40,unsigned char * MCS_rate)1281 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40, unsigned char *MCS_rate)
1282 {
1283 u16 max_rate = 0;
1284
1285 if (rf_type == RF_1T1R) {
1286 if (MCS_rate[0] & BIT(7))
1287 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1288 else if (MCS_rate[0] & BIT(6))
1289 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1290 else if (MCS_rate[0] & BIT(5))
1291 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1292 else if (MCS_rate[0] & BIT(4))
1293 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1294 else if (MCS_rate[0] & BIT(3))
1295 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1296 else if (MCS_rate[0] & BIT(2))
1297 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1298 else if (MCS_rate[0] & BIT(1))
1299 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1300 else if (MCS_rate[0] & BIT(0))
1301 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1302 } else {
1303 if (MCS_rate[1]) {
1304 if (MCS_rate[1] & BIT(7))
1305 max_rate = (bw_40MHz) ? ((short_GI_40) ? 3000 : 2700) : ((short_GI_20) ? 1444 : 1300);
1306 else if (MCS_rate[1] & BIT(6))
1307 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2700 : 2430) : ((short_GI_20) ? 1300 : 1170);
1308 else if (MCS_rate[1] & BIT(5))
1309 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2400 : 2160) : ((short_GI_20) ? 1156 : 1040);
1310 else if (MCS_rate[1] & BIT(4))
1311 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1800 : 1620) : ((short_GI_20) ? 867 : 780);
1312 else if (MCS_rate[1] & BIT(3))
1313 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1314 else if (MCS_rate[1] & BIT(2))
1315 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1316 else if (MCS_rate[1] & BIT(1))
1317 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1318 else if (MCS_rate[1] & BIT(0))
1319 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1320 } else {
1321 if (MCS_rate[0] & BIT(7))
1322 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1323 else if (MCS_rate[0] & BIT(6))
1324 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1325 else if (MCS_rate[0] & BIT(5))
1326 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1327 else if (MCS_rate[0] & BIT(4))
1328 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1329 else if (MCS_rate[0] & BIT(3))
1330 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1331 else if (MCS_rate[0] & BIT(2))
1332 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1333 else if (MCS_rate[0] & BIT(1))
1334 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1335 else if (MCS_rate[0] & BIT(0))
1336 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1337 }
1338 }
1339 return max_rate;
1340 }
1341
rtw_action_frame_parse(const u8 * frame,u32 frame_len,u8 * category,u8 * action)1342 int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
1343 {
1344 const u8 *frame_body = frame + sizeof(struct rtw_ieee80211_hdr_3addr);
1345 u16 fc;
1346 u8 c, a = 0;
1347
1348 fc = le16_to_cpu(((struct rtw_ieee80211_hdr_3addr *)frame)->frame_ctl);
1349
1350 if ((fc & (RTW_IEEE80211_FCTL_FTYPE|RTW_IEEE80211_FCTL_STYPE)) !=
1351 (RTW_IEEE80211_FTYPE_MGMT|RTW_IEEE80211_STYPE_ACTION))
1352 return false;
1353
1354 c = frame_body[0];
1355
1356 switch (c) {
1357 case RTW_WLAN_CATEGORY_P2P: /* vendor-specific */
1358 break;
1359 default:
1360 a = frame_body[1];
1361 }
1362
1363 if (category)
1364 *category = c;
1365 if (action)
1366 *action = a;
1367
1368 return true;
1369 }
1370
1371 static const char *_action_public_str[] = {
1372 "ACT_PUB_BSSCOEXIST",
1373 "ACT_PUB_DSE_ENABLE",
1374 "ACT_PUB_DSE_DEENABLE",
1375 "ACT_PUB_DSE_REG_LOCATION",
1376 "ACT_PUB_EXT_CHL_SWITCH",
1377 "ACT_PUB_DSE_MSR_REQ",
1378 "ACT_PUB_DSE_MSR_RPRT",
1379 "ACT_PUB_MP",
1380 "ACT_PUB_DSE_PWR_CONSTRAINT",
1381 "ACT_PUB_VENDOR",
1382 "ACT_PUB_GAS_INITIAL_REQ",
1383 "ACT_PUB_GAS_INITIAL_RSP",
1384 "ACT_PUB_GAS_COMEBACK_REQ",
1385 "ACT_PUB_GAS_COMEBACK_RSP",
1386 "ACT_PUB_TDLS_DISCOVERY_RSP",
1387 "ACT_PUB_LOCATION_TRACK",
1388 "ACT_PUB_RSVD",
1389 };
1390
action_public_str(u8 action)1391 const char *action_public_str(u8 action)
1392 {
1393 action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
1394 return _action_public_str[action];
1395 }
1396