1
2
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4
5
6
7#define _IEEE80211_C
8
9#include <drv_types.h>
10#include <rtw_debug.h>
11#include <linux/of.h>
12#include <asm/unaligned.h>
13
14u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
15u16 RTW_WPA_VERSION = 1;
16u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
17u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
18u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
19u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
20u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
21u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
22u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
23u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
24u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
25
26u16 RSN_VERSION_BSD = 1;
27u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
28u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
29u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
30u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
31u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
32u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
33u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
34u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
35
36
37
38
39static u8 WIFI_CCKRATES[] = {
40 (IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
41 (IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
42 (IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
43 (IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)
44};
45
46static u8 WIFI_OFDMRATES[] = {
47 (IEEE80211_OFDM_RATE_6MB),
48 (IEEE80211_OFDM_RATE_9MB),
49 (IEEE80211_OFDM_RATE_12MB),
50 (IEEE80211_OFDM_RATE_18MB),
51 (IEEE80211_OFDM_RATE_24MB),
52 IEEE80211_OFDM_RATE_36MB,
53 IEEE80211_OFDM_RATE_48MB,
54 IEEE80211_OFDM_RATE_54MB
55};
56
57int rtw_get_bit_value_from_ieee_value(u8 val)
58{
59 unsigned char dot11_rate_table[] = {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108, 0};
60 int i = 0;
61
62 while (dot11_rate_table[i] != 0) {
63 if (dot11_rate_table[i] == val)
64 return BIT(i);
65 i++;
66 }
67 return 0;
68}
69
70bool rtw_is_cckrates_included(u8 *rate)
71{
72 while (*rate) {
73 u8 r = *rate & 0x7f;
74
75 if (r == 2 || r == 4 || r == 11 || r == 22)
76 return true;
77 rate++;
78 }
79
80 return false;
81}
82
83bool rtw_is_cckratesonly_included(u8 *rate)
84{
85 while (*rate) {
86 u8 r = *rate & 0x7f;
87
88 if (r != 2 && r != 4 && r != 11 && r != 22)
89 return false;
90 rate++;
91 }
92
93 return true;
94}
95
96int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
97{
98 if (channel > 14) {
99 return WIRELESS_INVALID;
100 } else {
101 if (rtw_is_cckratesonly_included(rate))
102 return WIRELESS_11B;
103 else if (rtw_is_cckrates_included(rate))
104 return WIRELESS_11BG;
105 else
106 return WIRELESS_11G;
107 }
108}
109
110u8 *rtw_set_fixed_ie(unsigned char *pbuf, unsigned int len, unsigned char *source,
111 unsigned int *frlen)
112{
113 memcpy((void *)pbuf, (void *)source, len);
114 *frlen = *frlen + len;
115 return pbuf + len;
116}
117
118
119u8 *rtw_set_ie(u8 *pbuf,
120 signed int index,
121 uint len,
122 u8 *source,
123 uint *frlen)
124{
125 *pbuf = (u8)index;
126
127 *(pbuf + 1) = (u8)len;
128
129 if (len > 0)
130 memcpy((void *)(pbuf + 2), (void *)source, len);
131
132 *frlen = *frlen + (len + 2);
133
134 return pbuf + len + 2;
135}
136
137
138
139
140u8 *rtw_get_ie(u8 *pbuf, signed int index, signed int *len, signed int limit)
141{
142 signed int tmp, i;
143 u8 *p;
144
145 if (limit < 1)
146 return NULL;
147
148 p = pbuf;
149 i = 0;
150 *len = 0;
151 while (1) {
152 if (*p == index) {
153 *len = *(p + 1);
154 return p;
155 } else {
156 tmp = *(p + 1);
157 p += (tmp + 2);
158 i += (tmp + 2);
159 }
160 if (i >= limit)
161 break;
162 }
163 return NULL;
164}
165
166
167
168
169
170
171
172
173
174
175
176
177
178u8 *rtw_get_ie_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len, u8 *ie, uint *ielen)
179{
180 uint cnt;
181 u8 *target_ie = NULL;
182
183 if (ielen)
184 *ielen = 0;
185
186 if (!in_ie || in_len <= 0)
187 return target_ie;
188
189 cnt = 0;
190
191 while (cnt < in_len) {
192 if (eid == in_ie[cnt]
193 && (!oui || !memcmp(&in_ie[cnt+2], oui, oui_len))) {
194 target_ie = &in_ie[cnt];
195
196 if (ie)
197 memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
198
199 if (ielen)
200 *ielen = in_ie[cnt+1]+2;
201
202 break;
203 } else {
204 cnt += in_ie[cnt+1]+2;
205 }
206 }
207
208 return target_ie;
209}
210
211
212
213
214
215
216
217
218
219
220
221
222int rtw_ies_remove_ie(u8 *ies, uint *ies_len, uint offset, u8 eid, u8 *oui, u8 oui_len)
223{
224 int ret = _FAIL;
225 u8 *target_ie;
226 u32 target_ielen;
227 u8 *start;
228 uint search_len;
229
230 if (!ies || !ies_len || *ies_len <= offset)
231 goto exit;
232
233 start = ies + offset;
234 search_len = *ies_len - offset;
235
236 while (1) {
237 target_ie = rtw_get_ie_ex(start, search_len, eid, oui, oui_len, NULL, &target_ielen);
238 if (target_ie && target_ielen) {
239 u8 *remain_ies = target_ie + target_ielen;
240 uint remain_len = search_len - (remain_ies - start);
241
242 memcpy(target_ie, remain_ies, remain_len);
243 *ies_len = *ies_len - target_ielen;
244 ret = _SUCCESS;
245
246 start = target_ie;
247 search_len = remain_len;
248 } else {
249 break;
250 }
251 }
252exit:
253 return ret;
254}
255
256void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
257{
258 memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
259
260 switch (mode) {
261 case WIRELESS_11B:
262 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
263 break;
264
265 case WIRELESS_11G:
266 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
267 break;
268
269 case WIRELESS_11BG:
270 case WIRELESS_11G_24N:
271 case WIRELESS_11_24N:
272 case WIRELESS_11BG_24N:
273 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
274 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
275 break;
276 }
277}
278
279uint rtw_get_rateset_len(u8 *rateset)
280{
281 uint i;
282
283 for (i = 0; i < 13; i++)
284 if (rateset[i] == 0)
285 break;
286 return i;
287}
288
289int rtw_generate_ie(struct registry_priv *pregistrypriv)
290{
291 u8 wireless_mode;
292 int sz = 0, rateLen;
293 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
294 u8 *ie = pdev_network->IEs;
295
296
297 sz += 8;
298 ie += sz;
299
300
301 *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);
302 sz += 2;
303 ie += 2;
304
305
306 *(u16 *)ie = 0;
307
308 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_IBSS);
309
310 if (pregistrypriv->preamble == PREAMBLE_SHORT)
311 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
312
313 if (pdev_network->Privacy)
314 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
315
316 sz += 2;
317 ie += 2;
318
319
320 ie = rtw_set_ie(ie, WLAN_EID_SSID, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
321
322
323 wireless_mode = pregistrypriv->wireless_mode;
324
325 rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
326
327 rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
328
329 if (rateLen > 8) {
330 ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, 8, pdev_network->SupportedRates, &sz);
331
332 } else {
333 ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, rateLen, pdev_network->SupportedRates, &sz);
334 }
335
336
337 ie = rtw_set_ie(ie, WLAN_EID_DS_PARAMS, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
338
339
340
341 ie = rtw_set_ie(ie, WLAN_EID_IBSS_PARAMS, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
342
343 if (rateLen > 8) {
344 ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
345 }
346
347
348 if ((pregistrypriv->wireless_mode & WIRELESS_11_24N) &&
349 (pregistrypriv->ht_enable == true)) {
350
351 }
352
353
354
355
356
357 return sz;
358}
359
360unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
361{
362 int len;
363 u16 val16;
364 unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
365 u8 *pbuf = pie;
366 int limit_new = limit;
367 __le16 le_tmp;
368
369 while (1) {
370 pbuf = rtw_get_ie(pbuf, WLAN_EID_VENDOR_SPECIFIC, &len, limit_new);
371
372 if (pbuf) {
373
374 if (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type))) {
375 goto check_next_ie;
376 }
377
378
379 memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
380
381 val16 = le16_to_cpu(le_tmp);
382 if (val16 != 0x0001)
383 goto check_next_ie;
384
385 *wpa_ie_len = *(pbuf + 1);
386
387 return pbuf;
388
389 } else {
390 *wpa_ie_len = 0;
391 return NULL;
392 }
393
394check_next_ie:
395
396 limit_new = limit - (pbuf - pie) - 2 - len;
397
398 if (limit_new <= 0)
399 break;
400
401 pbuf += (2 + len);
402 }
403
404 *wpa_ie_len = 0;
405
406 return NULL;
407}
408
409unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
410{
411 return rtw_get_ie(pie, WLAN_EID_RSN, rsn_ie_len, limit);
412}
413
414int rtw_get_wpa_cipher_suite(u8 *s)
415{
416 if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
417 return WPA_CIPHER_NONE;
418 if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
419 return WPA_CIPHER_WEP40;
420 if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
421 return WPA_CIPHER_TKIP;
422 if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
423 return WPA_CIPHER_CCMP;
424 if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
425 return WPA_CIPHER_WEP104;
426
427 return 0;
428}
429
430int rtw_get_wpa2_cipher_suite(u8 *s)
431{
432 if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
433 return WPA_CIPHER_NONE;
434 if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
435 return WPA_CIPHER_WEP40;
436 if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
437 return WPA_CIPHER_TKIP;
438 if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
439 return WPA_CIPHER_CCMP;
440 if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
441 return WPA_CIPHER_WEP104;
442
443 return 0;
444}
445
446int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
447{
448 int i, ret = _SUCCESS;
449 int left, count;
450 u8 *pos;
451 u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
452
453 if (wpa_ie_len <= 0) {
454
455 return _FAIL;
456 }
457
458 if ((*wpa_ie != WLAN_EID_VENDOR_SPECIFIC) || (*(wpa_ie+1) != (u8)(wpa_ie_len - 2)) ||
459 (memcmp(wpa_ie+2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN))) {
460 return _FAIL;
461 }
462
463 pos = wpa_ie;
464
465 pos += 8;
466 left = wpa_ie_len - 8;
467
468
469 if (left >= WPA_SELECTOR_LEN) {
470 *group_cipher = rtw_get_wpa_cipher_suite(pos);
471
472 pos += WPA_SELECTOR_LEN;
473 left -= WPA_SELECTOR_LEN;
474
475 } else if (left > 0)
476 return _FAIL;
477
478
479 if (left >= 2) {
480
481 count = get_unaligned_le16(pos);
482 pos += 2;
483 left -= 2;
484
485 if (count == 0 || left < count * WPA_SELECTOR_LEN)
486 return _FAIL;
487
488 for (i = 0; i < count; i++) {
489 *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
490
491 pos += WPA_SELECTOR_LEN;
492 left -= WPA_SELECTOR_LEN;
493 }
494
495 } else if (left == 1)
496 return _FAIL;
497
498 if (is_8021x) {
499 if (left >= 6) {
500 pos += 2;
501 if (!memcmp(pos, SUITE_1X, 4)) {
502 *is_8021x = 1;
503 }
504 }
505 }
506
507 return ret;
508}
509
510int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
511{
512 int i, ret = _SUCCESS;
513 int left, count;
514 u8 *pos;
515 u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
516
517 if (rsn_ie_len <= 0) {
518
519 return _FAIL;
520 }
521
522 if ((*rsn_ie != WLAN_EID_RSN) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2))) {
523 return _FAIL;
524 }
525
526 pos = rsn_ie;
527 pos += 4;
528 left = rsn_ie_len - 4;
529
530
531 if (left >= RSN_SELECTOR_LEN) {
532 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
533
534 pos += RSN_SELECTOR_LEN;
535 left -= RSN_SELECTOR_LEN;
536
537 } else if (left > 0)
538 return _FAIL;
539
540
541 if (left >= 2) {
542
543 count = get_unaligned_le16(pos);
544 pos += 2;
545 left -= 2;
546
547 if (count == 0 || left < count * RSN_SELECTOR_LEN)
548 return _FAIL;
549
550 for (i = 0; i < count; i++) {
551 *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
552
553 pos += RSN_SELECTOR_LEN;
554 left -= RSN_SELECTOR_LEN;
555 }
556
557 } else if (left == 1)
558 return _FAIL;
559
560 if (is_8021x) {
561 if (left >= 6) {
562 pos += 2;
563 if (!memcmp(pos, SUITE_1X, 4))
564 *is_8021x = 1;
565 }
566 }
567
568 return ret;
569}
570
571
572int rtw_get_wapi_ie(u8 *in_ie, uint in_len, u8 *wapi_ie, u16 *wapi_len)
573{
574 int len = 0;
575 u8 authmode;
576 uint cnt;
577 u8 wapi_oui1[4] = {0x0, 0x14, 0x72, 0x01};
578 u8 wapi_oui2[4] = {0x0, 0x14, 0x72, 0x02};
579
580 if (wapi_len)
581 *wapi_len = 0;
582
583 if (!in_ie || in_len <= 0)
584 return len;
585
586 cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
587
588 while (cnt < in_len) {
589 authmode = in_ie[cnt];
590
591
592 if (authmode == WLAN_EID_BSS_AC_ACCESS_DELAY && (!memcmp(&in_ie[cnt+6], wapi_oui1, 4) ||
593 !memcmp(&in_ie[cnt+6], wapi_oui2, 4))) {
594 if (wapi_ie)
595 memcpy(wapi_ie, &in_ie[cnt], in_ie[cnt+1]+2);
596
597 if (wapi_len)
598 *wapi_len = in_ie[cnt+1]+2;
599
600 cnt += in_ie[cnt+1]+2;
601 } else {
602 cnt += in_ie[cnt+1]+2;
603 }
604 }
605
606 if (wapi_len)
607 len = *wapi_len;
608
609 return len;
610}
611
612
613void rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
614{
615 u8 authmode;
616 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
617 uint cnt;
618
619
620
621 cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
622
623 while (cnt < in_len) {
624 authmode = in_ie[cnt];
625
626 if ((authmode == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt+2], &wpa_oui[0], 4))) {
627 if (wpa_ie)
628 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
629
630 *wpa_len = in_ie[cnt + 1] + 2;
631 cnt += in_ie[cnt + 1] + 2;
632 } else {
633 if (authmode == WLAN_EID_RSN) {
634 if (rsn_ie)
635 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
636
637 *rsn_len = in_ie[cnt+1]+2;
638 cnt += in_ie[cnt+1]+2;
639 } else {
640 cnt += in_ie[cnt+1]+2;
641 }
642 }
643 }
644}
645
646u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
647{
648 u8 match = false;
649 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
650
651 if (!ie_ptr)
652 return match;
653
654 eid = ie_ptr[0];
655
656 if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
657 *wps_ielen = ie_ptr[1]+2;
658 match = true;
659 }
660 return match;
661}
662
663
664
665
666
667
668
669
670
671
672u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
673{
674 uint cnt;
675 u8 *wpsie_ptr = NULL;
676 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
677
678 if (wps_ielen)
679 *wps_ielen = 0;
680
681 if (!in_ie || in_len <= 0)
682 return wpsie_ptr;
683
684 cnt = 0;
685
686 while (cnt < in_len) {
687 eid = in_ie[cnt];
688
689 if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
690 wpsie_ptr = &in_ie[cnt];
691
692 if (wps_ie)
693 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
694
695 if (wps_ielen)
696 *wps_ielen = in_ie[cnt+1]+2;
697
698 cnt += in_ie[cnt+1]+2;
699
700 break;
701 } else {
702 cnt += in_ie[cnt+1]+2;
703 }
704 }
705
706 return wpsie_ptr;
707}
708
709
710
711
712
713
714
715
716
717
718
719u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
720{
721 u8 *attr_ptr = NULL;
722 u8 *target_attr_ptr = NULL;
723 u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
724
725 if (len_attr)
726 *len_attr = 0;
727
728 if ((wps_ie[0] != WLAN_EID_VENDOR_SPECIFIC) ||
729 (memcmp(wps_ie + 2, wps_oui, 4))) {
730 return attr_ptr;
731 }
732
733
734 attr_ptr = wps_ie + 6;
735
736 while (attr_ptr - wps_ie < wps_ielen) {
737
738 u16 attr_id = get_unaligned_be16(attr_ptr);
739 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
740 u16 attr_len = attr_data_len + 4;
741
742 if (attr_id == target_attr_id) {
743 target_attr_ptr = attr_ptr;
744
745 if (buf_attr)
746 memcpy(buf_attr, attr_ptr, attr_len);
747
748 if (len_attr)
749 *len_attr = attr_len;
750
751 break;
752 } else {
753 attr_ptr += attr_len;
754 }
755 }
756
757 return target_attr_ptr;
758}
759
760
761
762
763
764
765
766
767
768
769
770u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
771{
772 u8 *attr_ptr;
773 u32 attr_len;
774
775 if (len_content)
776 *len_content = 0;
777
778 attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
779
780 if (attr_ptr && attr_len) {
781 if (buf_content)
782 memcpy(buf_content, attr_ptr+4, attr_len-4);
783
784 if (len_content)
785 *len_content = attr_len-4;
786
787 return attr_ptr+4;
788 }
789
790 return NULL;
791}
792
793static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
794 struct rtw_ieee802_11_elems *elems,
795 int show_errors)
796{
797 unsigned int oui;
798
799
800
801
802 if (elen < 4)
803 return -1;
804
805 oui = get_unaligned_be24(pos);
806 switch (oui) {
807 case OUI_MICROSOFT:
808
809
810 switch (pos[3]) {
811 case 1:
812
813
814 elems->wpa_ie = pos;
815 elems->wpa_ie_len = elen;
816 break;
817 case WME_OUI_TYPE:
818 if (elen < 5)
819 return -1;
820
821 switch (pos[4]) {
822 case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
823 case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
824 elems->wme = pos;
825 elems->wme_len = elen;
826 break;
827 case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
828 elems->wme_tspec = pos;
829 elems->wme_tspec_len = elen;
830 break;
831 default:
832 return -1;
833 }
834 break;
835 case 4:
836
837 elems->wps_ie = pos;
838 elems->wps_ie_len = elen;
839 break;
840 default:
841 return -1;
842 }
843 break;
844
845 case OUI_BROADCOM:
846 switch (pos[3]) {
847 case VENDOR_HT_CAPAB_OUI_TYPE:
848 elems->vendor_ht_cap = pos;
849 elems->vendor_ht_cap_len = elen;
850 break;
851 default:
852 return -1;
853 }
854 break;
855
856 default:
857 return -1;
858 }
859
860 return 0;
861}
862
863
864
865
866
867
868
869
870
871enum ParseRes rtw_ieee802_11_parse_elems(u8 *start, uint len,
872 struct rtw_ieee802_11_elems *elems,
873 int show_errors)
874{
875 uint left = len;
876 u8 *pos = start;
877 int unknown = 0;
878
879 memset(elems, 0, sizeof(*elems));
880
881 while (left >= 2) {
882 u8 id, elen;
883
884 id = *pos++;
885 elen = *pos++;
886 left -= 2;
887
888 if (elen > left)
889 return ParseFailed;
890
891 switch (id) {
892 case WLAN_EID_SSID:
893 elems->ssid = pos;
894 elems->ssid_len = elen;
895 break;
896 case WLAN_EID_SUPP_RATES:
897 elems->supp_rates = pos;
898 elems->supp_rates_len = elen;
899 break;
900 case WLAN_EID_FH_PARAMS:
901 elems->fh_params = pos;
902 elems->fh_params_len = elen;
903 break;
904 case WLAN_EID_DS_PARAMS:
905 elems->ds_params = pos;
906 elems->ds_params_len = elen;
907 break;
908 case WLAN_EID_CF_PARAMS:
909 elems->cf_params = pos;
910 elems->cf_params_len = elen;
911 break;
912 case WLAN_EID_TIM:
913 elems->tim = pos;
914 elems->tim_len = elen;
915 break;
916 case WLAN_EID_IBSS_PARAMS:
917 elems->ibss_params = pos;
918 elems->ibss_params_len = elen;
919 break;
920 case WLAN_EID_CHALLENGE:
921 elems->challenge = pos;
922 elems->challenge_len = elen;
923 break;
924 case WLAN_EID_ERP_INFO:
925 elems->erp_info = pos;
926 elems->erp_info_len = elen;
927 break;
928 case WLAN_EID_EXT_SUPP_RATES:
929 elems->ext_supp_rates = pos;
930 elems->ext_supp_rates_len = elen;
931 break;
932 case WLAN_EID_VENDOR_SPECIFIC:
933 if (rtw_ieee802_11_parse_vendor_specific(pos, elen,
934 elems,
935 show_errors))
936 unknown++;
937 break;
938 case WLAN_EID_RSN:
939 elems->rsn_ie = pos;
940 elems->rsn_ie_len = elen;
941 break;
942 case WLAN_EID_PWR_CAPABILITY:
943 elems->power_cap = pos;
944 elems->power_cap_len = elen;
945 break;
946 case WLAN_EID_SUPPORTED_CHANNELS:
947 elems->supp_channels = pos;
948 elems->supp_channels_len = elen;
949 break;
950 case WLAN_EID_MOBILITY_DOMAIN:
951 elems->mdie = pos;
952 elems->mdie_len = elen;
953 break;
954 case WLAN_EID_FAST_BSS_TRANSITION:
955 elems->ftie = pos;
956 elems->ftie_len = elen;
957 break;
958 case WLAN_EID_TIMEOUT_INTERVAL:
959 elems->timeout_int = pos;
960 elems->timeout_int_len = elen;
961 break;
962 case WLAN_EID_HT_CAPABILITY:
963 elems->ht_capabilities = pos;
964 elems->ht_capabilities_len = elen;
965 break;
966 case WLAN_EID_HT_OPERATION:
967 elems->ht_operation = pos;
968 elems->ht_operation_len = elen;
969 break;
970 case WLAN_EID_VHT_CAPABILITY:
971 elems->vht_capabilities = pos;
972 elems->vht_capabilities_len = elen;
973 break;
974 case WLAN_EID_VHT_OPERATION:
975 elems->vht_operation = pos;
976 elems->vht_operation_len = elen;
977 break;
978 case WLAN_EID_OPMODE_NOTIF:
979 elems->vht_op_mode_notify = pos;
980 elems->vht_op_mode_notify_len = elen;
981 break;
982 default:
983 unknown++;
984 break;
985 }
986
987 left -= elen;
988 pos += elen;
989 }
990
991 if (left)
992 return ParseFailed;
993
994 return unknown ? ParseUnknown : ParseOK;
995}
996
997void rtw_macaddr_cfg(struct device *dev, u8 *mac_addr)
998{
999 u8 mac[ETH_ALEN];
1000 struct device_node *np = dev->of_node;
1001 const unsigned char *addr;
1002 int len;
1003
1004 if (!mac_addr)
1005 return;
1006
1007 if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
1008
1009 ether_addr_copy(mac_addr, mac);
1010 } else {
1011
1012 ether_addr_copy(mac, mac_addr);
1013 }
1014
1015 if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) {
1016 addr = of_get_property(np, "local-mac-address", &len);
1017
1018 if (addr && len == ETH_ALEN) {
1019 ether_addr_copy(mac_addr, addr);
1020 } else {
1021 eth_random_addr(mac_addr);
1022 }
1023 }
1024}
1025
1026static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1027{
1028 u32 wpa_ielen;
1029 unsigned char *pbuf;
1030 int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1031 int ret = _FAIL;
1032
1033 pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1034
1035 if (pbuf && (wpa_ielen > 0)) {
1036 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1037 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1038 pnetwork->BcnInfo.group_cipher = group_cipher;
1039 pnetwork->BcnInfo.is_8021x = is8021x;
1040 ret = _SUCCESS;
1041 }
1042 } else {
1043 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1044
1045 if (pbuf && (wpa_ielen > 0)) {
1046 if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1047 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1048 pnetwork->BcnInfo.group_cipher = group_cipher;
1049 pnetwork->BcnInfo.is_8021x = is8021x;
1050 ret = _SUCCESS;
1051 }
1052 }
1053 }
1054
1055 return ret;
1056}
1057
1058void rtw_get_bcn_info(struct wlan_network *pnetwork)
1059{
1060 unsigned short cap = 0;
1061 u8 bencrypt = 0;
1062
1063 u16 wpa_len = 0, rsn_len = 0;
1064 struct HT_info_element *pht_info = NULL;
1065 struct ieee80211_ht_cap *pht_cap = NULL;
1066 unsigned int len;
1067 unsigned char *p;
1068 __le16 le_cap;
1069
1070 memcpy((u8 *)&le_cap, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1071 cap = le16_to_cpu(le_cap);
1072 if (cap & WLAN_CAPABILITY_PRIVACY) {
1073 bencrypt = 1;
1074 pnetwork->network.Privacy = 1;
1075 } else {
1076 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1077 }
1078 rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
1079
1080 if (rsn_len > 0) {
1081 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1082 } else if (wpa_len > 0) {
1083 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1084 } else {
1085 if (bencrypt)
1086 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1087 }
1088 rtw_get_cipher_info(pnetwork);
1089
1090
1091
1092 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, WLAN_EID_HT_CAPABILITY, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1093 if (p && len > 0) {
1094 pht_cap = (struct ieee80211_ht_cap *)(p + 2);
1095 pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(pht_cap->cap_info);
1096 } else {
1097 pnetwork->BcnInfo.ht_cap_info = 0;
1098 }
1099
1100 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, WLAN_EID_HT_OPERATION, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1101 if (p && len > 0) {
1102 pht_info = (struct HT_info_element *)(p + 2);
1103 pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1104 } else {
1105 pnetwork->BcnInfo.ht_info_infos_0 = 0;
1106 }
1107}
1108
1109
1110u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI, unsigned char *MCS_rate)
1111{
1112 u16 max_rate = 0;
1113
1114 if (rf_type == RF_1T1R) {
1115 if (MCS_rate[0] & BIT(7))
1116 max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1117 else if (MCS_rate[0] & BIT(6))
1118 max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1119 else if (MCS_rate[0] & BIT(5))
1120 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1121 else if (MCS_rate[0] & BIT(4))
1122 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1123 else if (MCS_rate[0] & BIT(3))
1124 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1125 else if (MCS_rate[0] & BIT(2))
1126 max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1127 else if (MCS_rate[0] & BIT(1))
1128 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1129 else if (MCS_rate[0] & BIT(0))
1130 max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1131 } else {
1132 if (MCS_rate[1]) {
1133 if (MCS_rate[1] & BIT(7))
1134 max_rate = (bw_40MHz) ? ((short_GI)?3000:2700):((short_GI)?1444:1300);
1135 else if (MCS_rate[1] & BIT(6))
1136 max_rate = (bw_40MHz) ? ((short_GI)?2700:2430):((short_GI)?1300:1170);
1137 else if (MCS_rate[1] & BIT(5))
1138 max_rate = (bw_40MHz) ? ((short_GI)?2400:2160):((short_GI)?1156:1040);
1139 else if (MCS_rate[1] & BIT(4))
1140 max_rate = (bw_40MHz) ? ((short_GI)?1800:1620):((short_GI)?867:780);
1141 else if (MCS_rate[1] & BIT(3))
1142 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1143 else if (MCS_rate[1] & BIT(2))
1144 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1145 else if (MCS_rate[1] & BIT(1))
1146 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1147 else if (MCS_rate[1] & BIT(0))
1148 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1149 } else {
1150 if (MCS_rate[0] & BIT(7))
1151 max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1152 else if (MCS_rate[0] & BIT(6))
1153 max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1154 else if (MCS_rate[0] & BIT(5))
1155 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1156 else if (MCS_rate[0] & BIT(4))
1157 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1158 else if (MCS_rate[0] & BIT(3))
1159 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1160 else if (MCS_rate[0] & BIT(2))
1161 max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1162 else if (MCS_rate[0] & BIT(1))
1163 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1164 else if (MCS_rate[0] & BIT(0))
1165 max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1166 }
1167 }
1168 return max_rate;
1169}
1170
1171int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
1172{
1173 const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);
1174 u16 fc;
1175 u8 c;
1176 u8 a = ACT_PUBLIC_MAX;
1177
1178 fc = le16_to_cpu(((struct ieee80211_hdr_3addr *)frame)->frame_control);
1179
1180 if ((fc & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE))
1181 != (IEEE80211_FTYPE_MGMT|IEEE80211_STYPE_ACTION)
1182 ) {
1183 return false;
1184 }
1185
1186 c = frame_body[0];
1187
1188 switch (c) {
1189 case RTW_WLAN_CATEGORY_P2P:
1190 break;
1191 default:
1192 a = frame_body[1];
1193 }
1194
1195 if (category)
1196 *category = c;
1197 if (action)
1198 *action = a;
1199
1200 return true;
1201}
1202
1203static const char *_action_public_str[] = {
1204 "ACT_PUB_BSSCOEXIST",
1205 "ACT_PUB_DSE_ENABLE",
1206 "ACT_PUB_DSE_DEENABLE",
1207 "ACT_PUB_DSE_REG_LOCATION",
1208 "ACT_PUB_EXT_CHL_SWITCH",
1209 "ACT_PUB_DSE_MSR_REQ",
1210 "ACT_PUB_DSE_MSR_RPRT",
1211 "ACT_PUB_MP",
1212 "ACT_PUB_DSE_PWR_CONSTRAINT",
1213 "ACT_PUB_VENDOR",
1214 "ACT_PUB_GAS_INITIAL_REQ",
1215 "ACT_PUB_GAS_INITIAL_RSP",
1216 "ACT_PUB_GAS_COMEBACK_REQ",
1217 "ACT_PUB_GAS_COMEBACK_RSP",
1218 "ACT_PUB_TDLS_DISCOVERY_RSP",
1219 "ACT_PUB_LOCATION_TRACK",
1220 "ACT_PUB_RSVD",
1221};
1222
1223const char *action_public_str(u8 action)
1224{
1225 action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
1226 return _action_public_str[action];
1227}
1228
