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 <linux/ieee80211.h>
23
24 #include <drv_types.h>
25 #include <osdep_intf.h>
26 #include <ieee80211.h>
27 #include <wifi.h>
28 #include <osdep_service.h>
29 #include <wlan_bssdef.h>
30
31 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
32 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
33 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
34 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
35 u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
36 u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
37 u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
38 u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
39 u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
40 u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
41
42 u16 RSN_VERSION_BSD = 1;
43 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
44 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
45 u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
46 u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
47 u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
48 u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
49 u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
50 u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
51 /* */
52 /* for adhoc-master to generate ie and provide supported-rate to fw */
53 /* */
54
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)
60 };
61
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
71 };
72
73
rtw_get_bit_value_from_ieee_value(u8 val)74 int rtw_get_bit_value_from_ieee_value(u8 val)
75 {
76 unsigned char dot11_rate_table[] = {
77 2, 4, 11, 22, 12, 18, 24, 36, 48,
78 72, 96, 108, 0}; /* last element must be zero!! */
79
80 int i = 0;
81 while (dot11_rate_table[i] != 0) {
82 if (dot11_rate_table[i] == val)
83 return BIT(i);
84 i++;
85 }
86 return 0;
87 }
88
rtw_is_cckrates_included(u8 * rate)89 uint rtw_is_cckrates_included(u8 *rate)
90 {
91 u32 i = 0;
92
93 while (rate[i] != 0) {
94 if ((((rate[i]) & 0x7f) == 2) || (((rate[i]) & 0x7f) == 4) ||
95 (((rate[i]) & 0x7f) == 11) || (((rate[i]) & 0x7f) == 22))
96 return true;
97 i++;
98 }
99 return false;
100 }
101
rtw_is_cckratesonly_included(u8 * rate)102 uint rtw_is_cckratesonly_included(u8 *rate)
103 {
104 u32 i = 0;
105
106 while (rate[i] != 0) {
107 if ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
108 (((rate[i]) & 0x7f) != 11) && (((rate[i]) & 0x7f) != 22))
109 return false;
110 i++;
111 }
112
113 return true;
114 }
115
rtw_check_network_type(unsigned char * rate,int ratelen,int channel)116 int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
117 {
118 if (channel > 14) {
119 if ((rtw_is_cckrates_included(rate)) == true)
120 return WIRELESS_INVALID;
121 else
122 return WIRELESS_11A;
123 } else { /* could be pure B, pure G, or B/G */
124 if ((rtw_is_cckratesonly_included(rate)) == true)
125 return WIRELESS_11B;
126 else if ((rtw_is_cckrates_included(rate)) == true)
127 return WIRELESS_11BG;
128 else
129 return WIRELESS_11G;
130 }
131 }
132
rtw_set_fixed_ie(void * pbuf,unsigned int len,void * source,unsigned int * frlen)133 u8 *rtw_set_fixed_ie(void *pbuf, unsigned int len, void *source,
134 unsigned int *frlen)
135 {
136 memcpy(pbuf, source, len);
137 *frlen = *frlen + len;
138 return ((u8 *)pbuf) + len;
139 }
140
141 /* rtw_set_ie will update frame length */
rtw_set_ie(u8 * pbuf,int index,uint len,u8 * source,uint * frlen)142 u8 *rtw_set_ie
143 (
144 u8 *pbuf,
145 int index,
146 uint len,
147 u8 *source,
148 uint *frlen /* frame length */
149 )
150 {
151 *pbuf = (u8)index;
152
153 *(pbuf + 1) = (u8)len;
154
155 if (len > 0)
156 memcpy((void *)(pbuf + 2), (void *)source, len);
157
158 *frlen = *frlen + (len + 2);
159
160 return pbuf + len + 2;
161 }
162
rtw_set_ie_ch_switch(u8 * buf,u32 * buf_len,u8 ch_switch_mode,u8 new_ch,u8 ch_switch_cnt)163 inline u8 *rtw_set_ie_ch_switch(u8 *buf, u32 *buf_len, u8 ch_switch_mode,
164 u8 new_ch, u8 ch_switch_cnt)
165 {
166 u8 ie_data[3];
167
168 ie_data[0] = ch_switch_mode;
169 ie_data[1] = new_ch;
170 ie_data[2] = ch_switch_cnt;
171 return rtw_set_ie(buf, WLAN_EID_CHANNEL_SWITCH, 3, ie_data, buf_len);
172 }
173
secondary_ch_offset_to_hal_ch_offset(u8 ch_offset)174 inline u8 secondary_ch_offset_to_hal_ch_offset(u8 ch_offset)
175 {
176 if (ch_offset == SCN)
177 return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
178 else if (ch_offset == SCA)
179 return HAL_PRIME_CHNL_OFFSET_UPPER;
180 else if (ch_offset == SCB)
181 return HAL_PRIME_CHNL_OFFSET_LOWER;
182
183 return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
184 }
185
hal_ch_offset_to_secondary_ch_offset(u8 ch_offset)186 inline u8 hal_ch_offset_to_secondary_ch_offset(u8 ch_offset)
187 {
188 if (ch_offset == HAL_PRIME_CHNL_OFFSET_DONT_CARE)
189 return SCN;
190 else if (ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
191 return SCB;
192 else if (ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
193 return SCA;
194
195 return SCN;
196 }
197
rtw_set_ie_secondary_ch_offset(u8 * buf,u32 * buf_len,u8 secondary_ch_offset)198 inline u8 *rtw_set_ie_secondary_ch_offset(u8 *buf, u32 *buf_len, u8 secondary_ch_offset)
199 {
200 return rtw_set_ie(buf, WLAN_EID_SECONDARY_CHANNEL_OFFSET, 1, &secondary_ch_offset, buf_len);
201 }
202
rtw_set_ie_mesh_ch_switch_parm(u8 * buf,u32 * buf_len,u8 ttl,u8 flags,u16 reason,u16 precedence)203 inline u8 *rtw_set_ie_mesh_ch_switch_parm(u8 *buf, u32 *buf_len, u8 ttl,
204 u8 flags, u16 reason, u16 precedence)
205 {
206 u8 ie_data[6];
207
208 ie_data[0] = ttl;
209 ie_data[1] = flags;
210 *(u16 *)(ie_data+2) = cpu_to_le16(reason);
211 *(u16 *)(ie_data+4) = cpu_to_le16(precedence);
212
213 return rtw_set_ie(buf, 0x118, 6, ie_data, buf_len);
214 }
215
216 /*----------------------------------------------------------------------------
217 index: the information element id index, limit is the limit for search
218 -----------------------------------------------------------------------------*/
rtw_get_ie(u8 * pbuf,int index,int * len,int limit)219 u8 *rtw_get_ie(u8 *pbuf, int index, int *len, int limit)
220 {
221 int tmp, i;
222 u8 *p;
223 if (limit < 1)
224 return NULL;
225
226 p = pbuf;
227 i = 0;
228 *len = 0;
229 while (1) {
230 if (*p == index) {
231 *len = *(p + 1);
232 return p;
233 } else {
234 tmp = *(p + 1);
235 p += (tmp + 2);
236 i += (tmp + 2);
237 }
238 if (i >= limit)
239 break;
240 }
241 return NULL;
242 }
243
244 /**
245 * rtw_get_ie_ex - Search specific IE from a series of IEs
246 * @in_ie: Address of IEs to search
247 * @in_len: Length limit from in_ie
248 * @eid: Element ID to match
249 * @oui: OUI to match
250 * @oui_len: OUI length
251 * @ie: If not NULL and the specific IE is found, the IE will be copied to the buf starting from the specific IE
252 * @ielen: If not NULL and the specific IE is found, will set to the length of the entire IE
253 *
254 * Returns: The address of the specific IE found, or NULL
255 */
rtw_get_ie_ex(u8 * in_ie,uint in_len,u8 eid,u8 * oui,u8 oui_len,u8 * ie,uint * ielen)256 u8 *rtw_get_ie_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len, u8 *ie, uint *ielen)
257 {
258 uint cnt;
259 u8 *target_ie = NULL;
260
261
262 if (ielen)
263 *ielen = 0;
264
265 if (!in_ie || in_len <= 0)
266 return target_ie;
267
268 cnt = 0;
269
270 while (cnt < in_len) {
271 if (eid == in_ie[cnt] && (!oui || !memcmp(&in_ie[cnt+2], oui, oui_len))) {
272 target_ie = &in_ie[cnt];
273
274 if (ie)
275 memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
276
277 if (ielen)
278 *ielen = in_ie[cnt+1]+2;
279
280 break;
281 } else {
282 cnt += in_ie[cnt+1]+2; /* goto next */
283 }
284 }
285 return target_ie;
286 }
287
288 /**
289 * rtw_ies_remove_ie - Find matching IEs and remove
290 * @ies: Address of IEs to search
291 * @ies_len: Pointer of length of ies, will update to new length
292 * @offset: The offset to start scarch
293 * @eid: Element ID to match
294 * @oui: OUI to match
295 * @oui_len: OUI length
296 *
297 * Returns: _SUCCESS: ies is updated, _FAIL: not updated
298 */
rtw_ies_remove_ie(u8 * ies,uint * ies_len,uint offset,u8 eid,u8 * oui,u8 oui_len)299 int rtw_ies_remove_ie(u8 *ies, uint *ies_len, uint offset, u8 eid, u8 *oui, u8 oui_len)
300 {
301 int ret = _FAIL;
302 u8 *target_ie;
303 u32 target_ielen;
304 u8 *start;
305 uint search_len;
306
307 if (!ies || !ies_len || *ies_len <= offset)
308 goto exit;
309
310 start = ies + offset;
311 search_len = *ies_len - offset;
312
313 while (1) {
314 target_ie = rtw_get_ie_ex(start, search_len, eid, oui, oui_len, NULL, &target_ielen);
315 if (target_ie && target_ielen) {
316 u8 buf[MAX_IE_SZ] = {0};
317 u8 *remain_ies = target_ie + target_ielen;
318 uint remain_len = search_len - (remain_ies - start);
319
320 memcpy(buf, remain_ies, remain_len);
321 memcpy(target_ie, buf, remain_len);
322 *ies_len = *ies_len - target_ielen;
323 ret = _SUCCESS;
324
325 start = target_ie;
326 search_len = remain_len;
327 } else {
328 break;
329 }
330 }
331 exit:
332 return ret;
333 }
334
rtw_set_supported_rate(u8 * SupportedRates,uint mode)335 void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
336 {
337
338 memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
339
340 switch (mode) {
341 case WIRELESS_11B:
342 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
343 break;
344 case WIRELESS_11G:
345 case WIRELESS_11A:
346 case WIRELESS_11_5N:
347 case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
348 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
349 break;
350 case WIRELESS_11BG:
351 case WIRELESS_11G_24N:
352 case WIRELESS_11_24N:
353 case WIRELESS_11BG_24N:
354 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
355 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
356 break;
357 }
358 }
359
rtw_get_rateset_len(u8 * rateset)360 uint rtw_get_rateset_len(u8 *rateset)
361 {
362 uint i = 0;
363 while (1) {
364 if ((rateset[i]) == 0)
365 break;
366 if (i > 12)
367 break;
368 i++;
369 }
370 return i;
371 }
372
rtw_generate_ie(struct registry_priv * pregistrypriv)373 int rtw_generate_ie(struct registry_priv *pregistrypriv)
374 {
375 u8 wireless_mode;
376 int sz = 0, rateLen;
377 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
378 u8 *ie = pdev_network->IEs;
379
380
381 /* timestamp will be inserted by hardware */
382 sz += 8;
383 ie += sz;
384
385 /* beacon interval : 2bytes */
386 *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
387 sz += 2;
388 ie += 2;
389
390 /* capability info */
391 *(u16 *)ie = 0;
392
393 *(__le16 *)ie |= cpu_to_le16(cap_IBSS);
394
395 if (pregistrypriv->preamble == PREAMBLE_SHORT)
396 *(__le16 *)ie |= cpu_to_le16(cap_ShortPremble);
397
398 if (pdev_network->Privacy)
399 *(__le16 *)ie |= cpu_to_le16(cap_Privacy);
400
401 sz += 2;
402 ie += 2;
403
404 /* SSID */
405 ie = rtw_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
406
407 /* supported rates */
408 if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
409 if (pdev_network->Configuration.DSConfig > 14)
410 wireless_mode = WIRELESS_11A_5N;
411 else
412 wireless_mode = WIRELESS_11BG_24N;
413 } else {
414 wireless_mode = pregistrypriv->wireless_mode;
415 }
416
417 rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
418
419 rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
420
421 if (rateLen > 8) {
422 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, 8, pdev_network->SupportedRates, &sz);
423 /* ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
424 } else {
425 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, rateLen, pdev_network->SupportedRates, &sz);
426 }
427
428 /* DS parameter set */
429 ie = rtw_set_ie(ie, _DSSET_IE_, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
430
431 /* IBSS Parameter Set */
432
433 ie = rtw_set_ie(ie, _IBSS_PARA_IE_, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
434
435 if (rateLen > 8)
436 ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
437
438 return sz;
439 }
440
rtw_get_wpa_ie(unsigned char * pie,int * wpa_ie_len,int limit)441 unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
442 {
443 int len;
444 u16 val16;
445 __le16 le_tmp;
446 unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
447 u8 *pbuf = pie;
448 int limit_new = limit;
449
450 while (1) {
451 pbuf = rtw_get_ie(pbuf, _WPA_IE_ID_, &len, limit_new);
452
453 if (pbuf) {
454 /* check if oui matches... */
455 if (!memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type)) == false)
456 goto check_next_ie;
457
458 /* check version... */
459 memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
460
461 val16 = le16_to_cpu(le_tmp);
462 if (val16 != 0x0001)
463 goto check_next_ie;
464 *wpa_ie_len = *(pbuf + 1);
465 return pbuf;
466 } else {
467 *wpa_ie_len = 0;
468 return NULL;
469 }
470
471 check_next_ie:
472 limit_new = limit - (pbuf - pie) - 2 - len;
473 if (limit_new <= 0)
474 break;
475 pbuf += (2 + len);
476 }
477 *wpa_ie_len = 0;
478 return NULL;
479 }
480
rtw_get_wpa2_ie(unsigned char * pie,int * rsn_ie_len,int limit)481 unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
482 {
483
484 return rtw_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
485 }
486
rtw_get_wpa_cipher_suite(u8 * s)487 int rtw_get_wpa_cipher_suite(u8 *s)
488 {
489 if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
490 return WPA_CIPHER_NONE;
491 if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
492 return WPA_CIPHER_WEP40;
493 if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
494 return WPA_CIPHER_TKIP;
495 if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
496 return WPA_CIPHER_CCMP;
497 if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
498 return WPA_CIPHER_WEP104;
499
500 return 0;
501 }
502
rtw_get_wpa2_cipher_suite(u8 * s)503 int rtw_get_wpa2_cipher_suite(u8 *s)
504 {
505 if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
506 return WPA_CIPHER_NONE;
507 if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
508 return WPA_CIPHER_WEP40;
509 if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
510 return WPA_CIPHER_TKIP;
511 if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
512 return WPA_CIPHER_CCMP;
513 if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
514 return WPA_CIPHER_WEP104;
515
516 return 0;
517 }
518
519
rtw_parse_wpa_ie(u8 * wpa_ie,int wpa_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)520 int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
521 {
522 int i, ret = _SUCCESS;
523 int left, count;
524 u8 *pos;
525 u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
526
527 if (wpa_ie_len <= 0) {
528 /* No WPA IE - fail silently */
529 return _FAIL;
530 }
531
532
533 if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie+1) != (u8)(wpa_ie_len - 2)) ||
534 (memcmp(wpa_ie+2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
535 return _FAIL;
536
537 pos = wpa_ie;
538
539 pos += 8;
540 left = wpa_ie_len - 8;
541
542
543 /* group_cipher */
544 if (left >= WPA_SELECTOR_LEN) {
545 *group_cipher = rtw_get_wpa_cipher_suite(pos);
546 pos += WPA_SELECTOR_LEN;
547 left -= WPA_SELECTOR_LEN;
548 } else if (left > 0) {
549 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
550 return _FAIL;
551 }
552
553 /* pairwise_cipher */
554 if (left >= 2) {
555 count = get_unaligned_le16(pos);
556 pos += 2;
557 left -= 2;
558
559 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
560 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
561 "count %u left %u", __func__, count, left));
562 return _FAIL;
563 }
564
565 for (i = 0; i < count; i++) {
566 *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
567
568 pos += WPA_SELECTOR_LEN;
569 left -= WPA_SELECTOR_LEN;
570 }
571 } else if (left == 1) {
572 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
573 return _FAIL;
574 }
575
576 if (is_8021x) {
577 if (left >= 6) {
578 pos += 2;
579 if (!memcmp(pos, SUITE_1X, 4)) {
580 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s : there has 802.1x auth\n", __func__));
581 *is_8021x = 1;
582 }
583 }
584 }
585
586 return ret;
587 }
588
rtw_parse_wpa2_ie(u8 * rsn_ie,int rsn_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)589 int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
590 {
591 int i, ret = _SUCCESS;
592 int left, count;
593 u8 *pos;
594 u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
595
596 if (rsn_ie_len <= 0) {
597 /* No RSN IE - fail silently */
598 return _FAIL;
599 }
600
601
602 if ((*rsn_ie != _WPA2_IE_ID_) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2)))
603 return _FAIL;
604
605 pos = rsn_ie;
606 pos += 4;
607 left = rsn_ie_len - 4;
608
609 /* group_cipher */
610 if (left >= RSN_SELECTOR_LEN) {
611 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
612
613 pos += RSN_SELECTOR_LEN;
614 left -= RSN_SELECTOR_LEN;
615
616 } else if (left > 0) {
617 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
618 return _FAIL;
619 }
620
621 /* pairwise_cipher */
622 if (left >= 2) {
623 count = get_unaligned_le16(pos);
624 pos += 2;
625 left -= 2;
626
627 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
628 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
629 "count %u left %u", __func__, count, left));
630 return _FAIL;
631 }
632
633 for (i = 0; i < count; i++) {
634 *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
635
636 pos += RSN_SELECTOR_LEN;
637 left -= RSN_SELECTOR_LEN;
638 }
639
640 } else if (left == 1) {
641 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
642
643 return _FAIL;
644 }
645
646 if (is_8021x) {
647 if (left >= 6) {
648 pos += 2;
649 if (!memcmp(pos, SUITE_1X, 4)) {
650 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__));
651 *is_8021x = 1;
652 }
653 }
654 }
655 return ret;
656 }
657
rtw_get_sec_ie(u8 * in_ie,uint in_len,u8 * rsn_ie,u16 * rsn_len,u8 * wpa_ie,u16 * wpa_len)658 int rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
659 {
660 u8 authmode, sec_idx, i;
661 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
662 uint cnt;
663
664
665 /* Search required WPA or WPA2 IE and copy to sec_ie[] */
666
667 cnt = _TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_;
668
669 sec_idx = 0;
670
671 while (cnt < in_len) {
672 authmode = in_ie[cnt];
673
674 if ((authmode == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], &wpa_oui[0], 4))) {
675 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
676 ("\n rtw_get_wpa_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
677 sec_idx, in_ie[cnt+1]+2));
678
679 if (wpa_ie) {
680 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
681
682 for (i = 0; i < (in_ie[cnt+1]+2); i += 8) {
683 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
684 ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
685 wpa_ie[i], wpa_ie[i+1], wpa_ie[i+2], wpa_ie[i+3], wpa_ie[i+4],
686 wpa_ie[i+5], wpa_ie[i+6], wpa_ie[i+7]));
687 }
688 }
689
690 *wpa_len = in_ie[cnt+1]+2;
691 cnt += in_ie[cnt+1]+2; /* get next */
692 } else {
693 if (authmode == _WPA2_IE_ID_) {
694 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
695 ("\n get_rsn_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
696 sec_idx, in_ie[cnt+1]+2));
697
698 if (rsn_ie) {
699 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt+1]+2);
700
701 for (i = 0; i < (in_ie[cnt+1]+2); i += 8) {
702 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
703 ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
704 rsn_ie[i], rsn_ie[i+1], rsn_ie[i+2], rsn_ie[i+3], rsn_ie[i+4],
705 rsn_ie[i+5], rsn_ie[i+6], rsn_ie[i+7]));
706 }
707 }
708
709 *rsn_len = in_ie[cnt+1]+2;
710 cnt += in_ie[cnt+1]+2; /* get next */
711 } else {
712 cnt += in_ie[cnt+1]+2; /* get next */
713 }
714 }
715 }
716
717
718 return *rsn_len + *wpa_len;
719 }
720
rtw_is_wps_ie(u8 * ie_ptr,uint * wps_ielen)721 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
722 {
723 u8 match = false;
724 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
725
726 if (ie_ptr == NULL)
727 return match;
728
729 eid = ie_ptr[0];
730
731 if ((eid == _WPA_IE_ID_) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
732 *wps_ielen = ie_ptr[1]+2;
733 match = true;
734 }
735 return match;
736 }
737
738 /**
739 * rtw_get_wps_ie - Search WPS IE from a series of IEs
740 * @in_ie: Address of IEs to search
741 * @in_len: Length limit from in_ie
742 * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
743 * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
744 *
745 * Returns: The address of the WPS IE found, or NULL
746 */
rtw_get_wps_ie(u8 * in_ie,uint in_len,u8 * wps_ie,uint * wps_ielen)747 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
748 {
749 uint cnt;
750 u8 *wpsie_ptr = NULL;
751 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
752
753 if (wps_ielen)
754 *wps_ielen = 0;
755
756 if (!in_ie || in_len <= 0)
757 return wpsie_ptr;
758
759 cnt = 0;
760
761 while (cnt < in_len) {
762 eid = in_ie[cnt];
763
764 if ((eid == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
765 wpsie_ptr = &in_ie[cnt];
766
767 if (wps_ie)
768 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
769
770 if (wps_ielen)
771 *wps_ielen = in_ie[cnt+1]+2;
772
773 cnt += in_ie[cnt+1]+2;
774
775 break;
776 } else {
777 cnt += in_ie[cnt+1]+2; /* goto next */
778 }
779 }
780 return wpsie_ptr;
781 }
782
783 /**
784 * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
785 * @wps_ie: Address of WPS IE to search
786 * @wps_ielen: Length limit from wps_ie
787 * @target_attr_id: The attribute ID of WPS attribute to search
788 * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
789 * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
790 *
791 * Returns: the address of the specific WPS attribute found, or NULL
792 */
rtw_get_wps_attr(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_attr,u32 * len_attr)793 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
794 {
795 u8 *attr_ptr = NULL;
796 u8 *target_attr_ptr = NULL;
797 u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
798
799 if (len_attr)
800 *len_attr = 0;
801
802 if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
803 (memcmp(wps_ie + 2, wps_oui, 4)))
804 return attr_ptr;
805
806 /* 6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
807 attr_ptr = wps_ie + 6; /* goto first attr */
808
809 while (attr_ptr - wps_ie < wps_ielen) {
810 /* 4 = 2(Attribute ID) + 2(Length) */
811 u16 attr_id = get_unaligned_be16(attr_ptr);
812 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
813 u16 attr_len = attr_data_len + 4;
814
815 if (attr_id == target_attr_id) {
816 target_attr_ptr = attr_ptr;
817 if (buf_attr)
818 memcpy(buf_attr, attr_ptr, attr_len);
819 if (len_attr)
820 *len_attr = attr_len;
821 break;
822 } else {
823 attr_ptr += attr_len; /* goto next */
824 }
825 }
826 return target_attr_ptr;
827 }
828
829 /**
830 * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
831 * @wps_ie: Address of WPS IE to search
832 * @wps_ielen: Length limit from wps_ie
833 * @target_attr_id: The attribute ID of WPS attribute to search
834 * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
835 * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
836 *
837 * Returns: the address of the specific WPS attribute content found, or NULL
838 */
rtw_get_wps_attr_content(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_content,uint * len_content)839 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
840 {
841 u8 *attr_ptr;
842 u32 attr_len;
843
844 if (len_content)
845 *len_content = 0;
846
847 attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
848
849 if (attr_ptr && attr_len) {
850 if (buf_content)
851 memcpy(buf_content, attr_ptr+4, attr_len-4);
852
853 if (len_content)
854 *len_content = attr_len-4;
855
856 return attr_ptr+4;
857 }
858
859 return NULL;
860 }
861
rtw_ieee802_11_parse_vendor_specific(u8 * pos,uint elen,struct rtw_ieee802_11_elems * elems,int show_errors)862 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
863 struct rtw_ieee802_11_elems *elems,
864 int show_errors)
865 {
866 unsigned int oui;
867
868 /* first 3 bytes in vendor specific information element are the IEEE
869 * OUI of the vendor. The following byte is used a vendor specific
870 * sub-type. */
871 if (elen < 4) {
872 if (show_errors) {
873 DBG_88E("short vendor specific information element ignored (len=%lu)\n",
874 (unsigned long)elen);
875 }
876 return -1;
877 }
878
879 oui = RTW_GET_BE24(pos);
880 switch (oui) {
881 case OUI_MICROSOFT:
882 /* Microsoft/Wi-Fi information elements are further typed and
883 * subtyped */
884 switch (pos[3]) {
885 case 1:
886 /* Microsoft OUI (00:50:F2) with OUI Type 1:
887 * real WPA information element */
888 elems->wpa_ie = pos;
889 elems->wpa_ie_len = elen;
890 break;
891 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
892 if (elen < 5) {
893 DBG_88E("short WME information element ignored (len=%lu)\n",
894 (unsigned long)elen);
895 return -1;
896 }
897 switch (pos[4]) {
898 case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
899 case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
900 elems->wme = pos;
901 elems->wme_len = elen;
902 break;
903 case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
904 elems->wme_tspec = pos;
905 elems->wme_tspec_len = elen;
906 break;
907 default:
908 DBG_88E("unknown WME information element ignored (subtype=%d len=%lu)\n",
909 pos[4], (unsigned long)elen);
910 return -1;
911 }
912 break;
913 case 4:
914 /* Wi-Fi Protected Setup (WPS) IE */
915 elems->wps_ie = pos;
916 elems->wps_ie_len = elen;
917 break;
918 default:
919 DBG_88E("Unknown Microsoft information element ignored (type=%d len=%lu)\n",
920 pos[3], (unsigned long)elen);
921 return -1;
922 }
923 break;
924
925 case OUI_BROADCOM:
926 switch (pos[3]) {
927 case VENDOR_HT_CAPAB_OUI_TYPE:
928 elems->vendor_ht_cap = pos;
929 elems->vendor_ht_cap_len = elen;
930 break;
931 default:
932 DBG_88E("Unknown Broadcom information element ignored (type=%d len=%lu)\n",
933 pos[3], (unsigned long)elen);
934 return -1;
935 }
936 break;
937 default:
938 DBG_88E("unknown vendor specific information element ignored (vendor OUI %02x:%02x:%02x len=%lu)\n",
939 pos[0], pos[1], pos[2], (unsigned long)elen);
940 return -1;
941 }
942 return 0;
943 }
944
945 /**
946 * ieee802_11_parse_elems - Parse information elements in management frames
947 * @start: Pointer to the start of IEs
948 * @len: Length of IE buffer in octets
949 * @elems: Data structure for parsed elements
950 * @show_errors: Whether to show parsing errors in debug log
951 * Returns: Parsing result
952 */
rtw_ieee802_11_parse_elems(u8 * start,uint len,struct rtw_ieee802_11_elems * elems,int show_errors)953 enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
954 struct rtw_ieee802_11_elems *elems,
955 int show_errors)
956 {
957 uint left = len;
958 u8 *pos = start;
959 int unknown = 0;
960
961 memset(elems, 0, sizeof(*elems));
962
963 while (left >= 2) {
964 u8 id, elen;
965
966 id = *pos++;
967 elen = *pos++;
968 left -= 2;
969
970 if (elen > left) {
971 if (show_errors) {
972 DBG_88E("IEEE 802.11 element parse failed (id=%d elen=%d left=%lu)\n",
973 id, elen, (unsigned long)left);
974 }
975 return ParseFailed;
976 }
977
978 switch (id) {
979 case WLAN_EID_SSID:
980 elems->ssid = pos;
981 elems->ssid_len = elen;
982 break;
983 case WLAN_EID_SUPP_RATES:
984 elems->supp_rates = pos;
985 elems->supp_rates_len = elen;
986 break;
987 case WLAN_EID_FH_PARAMS:
988 elems->fh_params = pos;
989 elems->fh_params_len = elen;
990 break;
991 case WLAN_EID_DS_PARAMS:
992 elems->ds_params = pos;
993 elems->ds_params_len = elen;
994 break;
995 case WLAN_EID_CF_PARAMS:
996 elems->cf_params = pos;
997 elems->cf_params_len = elen;
998 break;
999 case WLAN_EID_TIM:
1000 elems->tim = pos;
1001 elems->tim_len = elen;
1002 break;
1003 case WLAN_EID_IBSS_PARAMS:
1004 elems->ibss_params = pos;
1005 elems->ibss_params_len = elen;
1006 break;
1007 case WLAN_EID_CHALLENGE:
1008 elems->challenge = pos;
1009 elems->challenge_len = elen;
1010 break;
1011 case WLAN_EID_ERP_INFO:
1012 elems->erp_info = pos;
1013 elems->erp_info_len = elen;
1014 break;
1015 case WLAN_EID_EXT_SUPP_RATES:
1016 elems->ext_supp_rates = pos;
1017 elems->ext_supp_rates_len = elen;
1018 break;
1019 case WLAN_EID_VENDOR_SPECIFIC:
1020 if (rtw_ieee802_11_parse_vendor_specific(pos, elen, elems, show_errors))
1021 unknown++;
1022 break;
1023 case WLAN_EID_RSN:
1024 elems->rsn_ie = pos;
1025 elems->rsn_ie_len = elen;
1026 break;
1027 case WLAN_EID_PWR_CAPABILITY:
1028 elems->power_cap = pos;
1029 elems->power_cap_len = elen;
1030 break;
1031 case WLAN_EID_SUPPORTED_CHANNELS:
1032 elems->supp_channels = pos;
1033 elems->supp_channels_len = elen;
1034 break;
1035 case WLAN_EID_MOBILITY_DOMAIN:
1036 elems->mdie = pos;
1037 elems->mdie_len = elen;
1038 break;
1039 case WLAN_EID_FAST_BSS_TRANSITION:
1040 elems->ftie = pos;
1041 elems->ftie_len = elen;
1042 break;
1043 case WLAN_EID_TIMEOUT_INTERVAL:
1044 elems->timeout_int = pos;
1045 elems->timeout_int_len = elen;
1046 break;
1047 case WLAN_EID_HT_CAPABILITY:
1048 elems->ht_capabilities = pos;
1049 elems->ht_capabilities_len = elen;
1050 break;
1051 case WLAN_EID_HT_OPERATION:
1052 elems->ht_operation = pos;
1053 elems->ht_operation_len = elen;
1054 break;
1055 default:
1056 unknown++;
1057 if (!show_errors)
1058 break;
1059 DBG_88E("IEEE 802.11 element parse ignored unknown element (id=%d elen=%d)\n",
1060 id, elen);
1061 break;
1062 }
1063 left -= elen;
1064 pos += elen;
1065 }
1066 if (left)
1067 return ParseFailed;
1068 return unknown ? ParseUnknown : ParseOK;
1069 }
1070
rtw_macaddr_cfg(u8 * mac_addr)1071 void rtw_macaddr_cfg(u8 *mac_addr)
1072 {
1073 u8 mac[ETH_ALEN];
1074
1075 if (mac_addr == NULL)
1076 return;
1077
1078 if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
1079 /* Users specify the mac address */
1080 memcpy(mac_addr, mac, ETH_ALEN);
1081 } else {
1082 /* Use the mac address stored in the Efuse */
1083 memcpy(mac, mac_addr, ETH_ALEN);
1084 }
1085
1086 if (((mac[0] == 0xff) && (mac[1] == 0xff) && (mac[2] == 0xff) &&
1087 (mac[3] == 0xff) && (mac[4] == 0xff) && (mac[5] == 0xff)) ||
1088 ((mac[0] == 0x0) && (mac[1] == 0x0) && (mac[2] == 0x0) &&
1089 (mac[3] == 0x0) && (mac[4] == 0x0) && (mac[5] == 0x0))) {
1090 mac[0] = 0x00;
1091 mac[1] = 0xe0;
1092 mac[2] = 0x4c;
1093 mac[3] = 0x87;
1094 mac[4] = 0x00;
1095 mac[5] = 0x00;
1096 /* use default mac address */
1097 memcpy(mac_addr, mac, ETH_ALEN);
1098 DBG_88E("MAC Address from efuse error, assign default one !!!\n");
1099 }
1100
1101 DBG_88E("rtw_macaddr_cfg MAC Address = %pM\n", (mac_addr));
1102 }
1103
dump_ies(u8 * buf,u32 buf_len)1104 void dump_ies(u8 *buf, u32 buf_len)
1105 {
1106 u8 *pos = buf;
1107 u8 id, len;
1108
1109 while (pos-buf <= buf_len) {
1110 id = *pos;
1111 len = *(pos+1);
1112
1113 DBG_88E("%s ID:%u, LEN:%u\n", __func__, id, len);
1114 dump_wps_ie(pos, len);
1115
1116 pos += (2 + len);
1117 }
1118 }
1119
dump_wps_ie(u8 * ie,u32 ie_len)1120 void dump_wps_ie(u8 *ie, u32 ie_len)
1121 {
1122 u8 *pos = ie;
1123 u16 id;
1124 u16 len;
1125 u8 *wps_ie;
1126 uint wps_ielen;
1127
1128 wps_ie = rtw_get_wps_ie(ie, ie_len, NULL, &wps_ielen);
1129 if (wps_ie != ie || wps_ielen == 0)
1130 return;
1131
1132 pos += 6;
1133 while (pos-ie < ie_len) {
1134 id = get_unaligned_be16(pos);
1135 len = get_unaligned_be16(pos + 2);
1136 DBG_88E("%s ID:0x%04x, LEN:%u\n", __func__, id, len);
1137 pos += (4+len);
1138 }
1139 }
1140
1141 /* Baron adds to avoid FreeBSD warning */
ieee80211_is_empty_essid(const char * essid,int essid_len)1142 int ieee80211_is_empty_essid(const char *essid, int essid_len)
1143 {
1144 /* Single white space is for Linksys APs */
1145 if (essid_len == 1 && essid[0] == ' ')
1146 return 1;
1147
1148 /* Otherwise, if the entire essid is 0, we assume it is hidden */
1149 while (essid_len) {
1150 essid_len--;
1151 if (essid[essid_len] != '\0')
1152 return 0;
1153 }
1154
1155 return 1;
1156 }
1157
ieee80211_get_hdrlen(u16 fc)1158 int ieee80211_get_hdrlen(u16 fc)
1159 {
1160 int hdrlen = 24;
1161
1162 switch (WLAN_FC_GET_TYPE(fc)) {
1163 case RTW_IEEE80211_FTYPE_DATA:
1164 if (fc & RTW_IEEE80211_STYPE_QOS_DATA)
1165 hdrlen += 2;
1166 if ((fc & RTW_IEEE80211_FCTL_FROMDS) && (fc & RTW_IEEE80211_FCTL_TODS))
1167 hdrlen += 6; /* Addr4 */
1168 break;
1169 case RTW_IEEE80211_FTYPE_CTL:
1170 switch (WLAN_FC_GET_STYPE(fc)) {
1171 case RTW_IEEE80211_STYPE_CTS:
1172 case RTW_IEEE80211_STYPE_ACK:
1173 hdrlen = 10;
1174 break;
1175 default:
1176 hdrlen = 16;
1177 break;
1178 }
1179 break;
1180 }
1181
1182 return hdrlen;
1183 }
1184
rtw_get_cipher_info(struct wlan_network * pnetwork)1185 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1186 {
1187 u32 wpa_ielen;
1188 unsigned char *pbuf;
1189 int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1190 int ret = _FAIL;
1191 pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1192
1193 if (pbuf && (wpa_ielen > 0)) {
1194 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
1195 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1196 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1197 pnetwork->BcnInfo.group_cipher = group_cipher;
1198 pnetwork->BcnInfo.is_8021x = is8021x;
1199 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
1200 __func__, pnetwork->BcnInfo.pairwise_cipher, pnetwork->BcnInfo.is_8021x));
1201 ret = _SUCCESS;
1202 }
1203 } else {
1204 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1205
1206 if (pbuf && (wpa_ielen > 0)) {
1207 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
1208 if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1209 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE OK!!!\n"));
1210 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1211 pnetwork->BcnInfo.group_cipher = group_cipher;
1212 pnetwork->BcnInfo.is_8021x = is8021x;
1213 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d,"
1214 "pnetwork->group_cipher is %d, is_8021x is %d", __func__, pnetwork->BcnInfo.pairwise_cipher,
1215 pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
1216 ret = _SUCCESS;
1217 }
1218 }
1219 }
1220
1221 return ret;
1222 }
1223
rtw_get_bcn_info(struct wlan_network * pnetwork)1224 void rtw_get_bcn_info(struct wlan_network *pnetwork)
1225 {
1226 unsigned short cap = 0;
1227 u8 bencrypt = 0;
1228 __le16 le_tmp;
1229 u16 wpa_len = 0, rsn_len = 0;
1230 struct HT_info_element *pht_info = NULL;
1231 struct rtw_ieee80211_ht_cap *pht_cap = NULL;
1232 unsigned int len;
1233 unsigned char *p;
1234
1235 memcpy(&le_tmp, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1236 cap = le16_to_cpu(le_tmp);
1237 if (cap & WLAN_CAPABILITY_PRIVACY) {
1238 bencrypt = 1;
1239 pnetwork->network.Privacy = 1;
1240 } else {
1241 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1242 }
1243 rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_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 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1247 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1248
1249 if (rsn_len > 0) {
1250 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1251 } else if (wpa_len > 0) {
1252 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1253 } else {
1254 if (bencrypt)
1255 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1256 }
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 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1260 pnetwork->BcnInfo.encryp_protocol));
1261 rtw_get_cipher_info(pnetwork);
1262
1263 /* get bwmode and ch_offset */
1264 /* parsing HT_CAP_IE */
1265 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_CAPABILITY_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1266 if (p && len > 0) {
1267 pht_cap = (struct rtw_ieee80211_ht_cap *)(p + 2);
1268 pnetwork->BcnInfo.ht_cap_info = pht_cap->cap_info;
1269 } else {
1270 pnetwork->BcnInfo.ht_cap_info = 0;
1271 }
1272 /* parsing HT_INFO_IE */
1273 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_ADD_INFO_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1274 if (p && len > 0) {
1275 pht_info = (struct HT_info_element *)(p + 2);
1276 pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1277 } else {
1278 pnetwork->BcnInfo.ht_info_infos_0 = 0;
1279 }
1280 }
1281
1282 /* 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)1283 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40, unsigned char *MCS_rate)
1284 {
1285 u16 max_rate = 0;
1286
1287 if (rf_type == RF_1T1R) {
1288 if (MCS_rate[0] & BIT(7))
1289 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1290 else if (MCS_rate[0] & BIT(6))
1291 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1292 else if (MCS_rate[0] & BIT(5))
1293 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1294 else if (MCS_rate[0] & BIT(4))
1295 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1296 else if (MCS_rate[0] & BIT(3))
1297 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1298 else if (MCS_rate[0] & BIT(2))
1299 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1300 else if (MCS_rate[0] & BIT(1))
1301 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1302 else if (MCS_rate[0] & BIT(0))
1303 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1304 } else {
1305 if (MCS_rate[1]) {
1306 if (MCS_rate[1] & BIT(7))
1307 max_rate = (bw_40MHz) ? ((short_GI_40) ? 3000 : 2700) : ((short_GI_20) ? 1444 : 1300);
1308 else if (MCS_rate[1] & BIT(6))
1309 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2700 : 2430) : ((short_GI_20) ? 1300 : 1170);
1310 else if (MCS_rate[1] & BIT(5))
1311 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2400 : 2160) : ((short_GI_20) ? 1156 : 1040);
1312 else if (MCS_rate[1] & BIT(4))
1313 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1800 : 1620) : ((short_GI_20) ? 867 : 780);
1314 else if (MCS_rate[1] & BIT(3))
1315 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1316 else if (MCS_rate[1] & BIT(2))
1317 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1318 else if (MCS_rate[1] & BIT(1))
1319 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1320 else if (MCS_rate[1] & BIT(0))
1321 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1322 } else {
1323 if (MCS_rate[0] & BIT(7))
1324 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1325 else if (MCS_rate[0] & BIT(6))
1326 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1327 else if (MCS_rate[0] & BIT(5))
1328 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1329 else if (MCS_rate[0] & BIT(4))
1330 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1331 else if (MCS_rate[0] & BIT(3))
1332 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1333 else if (MCS_rate[0] & BIT(2))
1334 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1335 else if (MCS_rate[0] & BIT(1))
1336 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1337 else if (MCS_rate[0] & BIT(0))
1338 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1339 }
1340 }
1341 return max_rate;
1342 }
1343
rtw_action_frame_parse(const u8 * frame,u32 frame_len,u8 * category,u8 * action)1344 int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
1345 {
1346 const u8 *frame_body = frame + sizeof(struct rtw_ieee80211_hdr_3addr);
1347 u16 fc;
1348 u8 c, a = 0;
1349
1350 fc = le16_to_cpu(((struct rtw_ieee80211_hdr_3addr *)frame)->frame_ctl);
1351
1352 if ((fc & (RTW_IEEE80211_FCTL_FTYPE|RTW_IEEE80211_FCTL_STYPE)) !=
1353 (RTW_IEEE80211_FTYPE_MGMT|RTW_IEEE80211_STYPE_ACTION))
1354 return false;
1355
1356 c = frame_body[0];
1357
1358 switch (c) {
1359 case RTW_WLAN_CATEGORY_P2P: /* vendor-specific */
1360 break;
1361 default:
1362 a = frame_body[1];
1363 }
1364
1365 if (category)
1366 *category = c;
1367 if (action)
1368 *action = a;
1369
1370 return true;
1371 }
1372
1373 static const char *_action_public_str[] = {
1374 "ACT_PUB_BSSCOEXIST",
1375 "ACT_PUB_DSE_ENABLE",
1376 "ACT_PUB_DSE_DEENABLE",
1377 "ACT_PUB_DSE_REG_LOCATION",
1378 "ACT_PUB_EXT_CHL_SWITCH",
1379 "ACT_PUB_DSE_MSR_REQ",
1380 "ACT_PUB_DSE_MSR_RPRT",
1381 "ACT_PUB_MP",
1382 "ACT_PUB_DSE_PWR_CONSTRAINT",
1383 "ACT_PUB_VENDOR",
1384 "ACT_PUB_GAS_INITIAL_REQ",
1385 "ACT_PUB_GAS_INITIAL_RSP",
1386 "ACT_PUB_GAS_COMEBACK_REQ",
1387 "ACT_PUB_GAS_COMEBACK_RSP",
1388 "ACT_PUB_TDLS_DISCOVERY_RSP",
1389 "ACT_PUB_LOCATION_TRACK",
1390 "ACT_PUB_RSVD",
1391 };
1392
action_public_str(u8 action)1393 const char *action_public_str(u8 action)
1394 {
1395 action = min_t(u8, action, ACT_PUBLIC_MAX);
1396 return _action_public_str[action];
1397 }
1398